United States Department of Labor
Administrative Law Judges Law Library
Note: The DOT was created by the Employment and Training Administration, and was last updated in 1991. It has been replaced by the O*NET.
DICTIONARY OF OCCUPATIONAL TITLES (4th Ed., Rev. 1991) -- GLOSSARY
The Glossary contains technical or special uses of words, which are not ordinarily found in a standard desk dictionary. These words are italicized when they appear in an occupational definition.
- ABSORPTION TOWER
- Tank used to form acidic bisulfate-active agent in digesting wood, from
ingredients such as sulfur dioxide, lime, manganese, and ammonia.
- AGATE BEARING
- A bearing made of agate used in small scales or precision balances where
resistance to corrosion is essential.
- The gap between the rotor and stator of an electric machine.
- AIR LANCE
- A long metal rod that carries compressed air to its tip. It is used for
- A process for bathing metal in hot alodine solution to give it protective
coating and surface for painting.
- BACK-ROLL LATHE
- A veneer lathe equipped with knives mounted on impression roller that rotates
counter to rotation of log. The knives score log lengthwise causing veneer to be
peeled from log in narrow stave and hoop widths.
- BACK SHEET
- A veneer sheet, usually of slightly inferior quality than FACE SHEET, used
for the bottom surface sheet of plywood panels.
- To adjust pressure, velocity, or volume control settings in a heating,
cooling, or ventilating system to attain performance indicated in system design
- BALL WARP
- An untwisted rope of yarn wound on core, usually for dyeing or mercerizing.
- Two plies of rubberized fabric pressed together with ends joined to form
endless strip used in building pneumatic tires.
- A fluffy layer which is composed of interlaced and matted strands of fibrous
material used for filling or insulating articles such as mattresses or
- See IN-BEAT.
- BEATING MACHINE
- A machine equipped with leather strips which, when revolving, beat loose
hair, dust, and foreign matter from fur pelts.
- BELL REAMER
- An expanding bit used to enlarge bottom of holes drilled to accommodate
concrete pier footings. The conical shape of resulting hole anchors footing and
serves as base for pier construction.
- BENCH GRINDER
- A small grinding machine for shaping and sharpening cutting edges of tools.
It consists of a motor, mounted on bench or floor stand, with grinding wheel at
one or both ends of shaft.
- BILGE OF STAVE
- The difference in width between ends and middle of a barrel stave.
- Heavy-walled rubber cylinder used in a curing press to expand uncured tires
into the recesses of the tire mold.
- BLINDSTITCH SEWING MACHINE
- A machine equipped with a curved needle to sew stitches that do not penetrate
the outer surface of fabric. Used for operations, such as hemming, lapel padding,
and lining felling.
- One of a number of leather strips joined together for use as trimming for
- BLOCKING MACHINE
- An electric stove equipped with a grill on which blocks, pitch, and lenses
are heated. On depressing a lever, hot pitch is forced onto block surface.
- A sheet of varnished canvas, or a lightweight wooden board, upon which rubber
slabs or parts are placed for transportation or storage.
- BOARDING I
- The process of softening leather and developing the grain by rubbing the
- BOARDING II
- The operation of shaping and drying hosiery on heated, metal, leg-shaped
forms known as hosiery boarding forms or boards.
- A supporting structure used to hold semiconductor wafers during and between
- Pieces of uncured gum rubber or rubber-coated fabric placed between cloth
pages or canvas sheets to prevent cohesion.
- BOX BLANK
- The sides, ends, and bottom of a wire-bound box in process of manufacture.
- BULKING CELL
- A rectangular enclosure with an open top and hinged door used to compress
tobacco into a bulk.
- BURLING IRON
- A handtool similar to an ice pick with a slit in the pick end used to push
yarn through fabric.
- BURN PATTERN
- The path that a fire takes from point of origin to the outermost limit of the
- BUS BAR
- Metal conductor forming a common junction between two or more electrical
- Heat resistant metal device with 200-400 holes through which molten glass is
extruded to manufacture fiberglass sliver.
- A steel cylinder used on knitting machine to keep links of pattern chain from
engaging and turning gears that activate shafts of machine.
- Synthetic thread piled into ring shape.
- CALIPER CHISEL
- A chisel attached to one leg of caliper used to turn wood to specified
diameter on wood lathe.
- On-screen text of a television show's or a movie's dialogue shown
simultaneously with the sound of the dialogue. This is usually done to provide
information for the hearing-impaired, or to provide a translation from a foreign
language. Captions are sometimes called subtitles, especially when providing a
translation from a foreign language.
- CARD CLOTHING FILLET
- A long, narrow strip of foundation material studded with many fine, closely
spaced, wire teeth.
- The brushing of furs with solution of hydrogen peroxide and nitric acid. This
treatment opens sheaths surrounding each fur fiber and permits matting (felting)
of fibers in subsequent operations.
- CASING FLUID
- A flavoring solution applied to tobacco to give it distinctive taste. Usually
made according to carefully guarded plant formulas from ingredients, such as
tonka beans, rum, licorice, and sugar.
- Tanks used to convert spent liquor and lime hydrate into hydroxide.
- A cylinder, open at both ends, which is inserted in top of hogshead container
to extend height of hogshead container for packing purposes.
- CHARGING MANIFOLD
- A hollow pipe fixture containing holes which receive and hold capillary tubes
of thermostat bellows while they are being filled with gas.
- To stabilize or eliminate protein compounds in beer to prolong shelf life.
- A noose of wire rope hitched about a log by means of which logs are skidded
- CLAMP MACHINE
- A stationary hand-powered or air-driven vise used to force together and hold
joints of wooden assemblies in position while being reinforced by nails, screws,
staples, and glue. Also known as case clamp, chair clamp, or bed clamp, depending
on design or purpose.
- A machine having submerged, rotating arms with plow blades which scrape
settled silt from bottom of settling basin spirally toward center of machine
where silt is collected in trough and sluiced through pipes back to river. The
clarifier does not clarify in the usual sense; silt is settled by gravity.
- CLEARER ROLLER
- A small cloth- or felt-covered roller driven by frictional contact with
rollers to keep rollers clean and collect roving waste when end breaks.
- CLINCHING TOOL
- A device used to secure upholstery padding material to furniture frames. Wire
staples held in tension in shaft of tool are released when trigger is pressed and
secure padding material to frames.
- COILER HEAD
- An attachment on textile machines that coils sliver after it has been
- COIL FORM
- Paper or plastic tube onto which wire coils are wound. Forms vary in length
according to number of coils wound on each form. Multiple wound coil forms are
cut on bandsaw into individual coils for assembly into electronic equipment.
- COLOR BOX
- Metal trough under each PRINTING ROLLER that contains a reservoir of printing
paste. A rubber or nylon bristle-covered roller dips color paste from the COLOR
BOX and forces the paste into the engravings of the PRINTING ROLLER.
- Precut undipped pasteboard resembling a hair comb, used for book matches.
- A set of small triangular pyramids of clay mixtures and fluxes so graded that
they represent series of fusion points. The degree of heat is measured in kiln
by observing which of various cones have bent over.
- CONTACT PROCESS
- Catalytic method of producing sulfuric acid by treatment of sulfur dioxide
with catalytic agents and reaction of resulting product with water in absorbing
- CORE CUTTER
- A modified pneumatic pavement breaker (jack-hammer) adapted to break into
wall of cement building.
- CORE STOCK
- Cheap veneer sheets placed between glued CROSSBANDS to form the interior of
plywood panel between the FACE SHEETS and BACK SHEETS.
- A machining process in which an enlarged, flat-bottomed cylindrical hole is
made at opening of existing hole usually so that bolt head or nut can be seated
flush with or below surface.
- COVERSTITCH SEWING MACHINE
- A machine that sews parallel rows of stitches with a covering thread spread
between the rows on one or both surfaces. Used for coverstitching on knit
- The outer grooves cut in buhr stones.
- CRIMPING ATTACHMENT
- Two feed rolls and a stuffer box into which yarn is overfed, then folded or
bent at a sharp angle and then heat-set during compression by attached heating
- Cheap veneer sheets glued between CORE STOCK and surface veneer to form
plywood, with the grain of the CROSSBANDS running across the grain of the CORE
STOCK and surface veneer to bind and hold the veneer sheets from expansion and
- CRYSTAL ORIENTATION
- The structural arrangement of atoms or molecules inside a semiconductor
crystal or wafer.
- Similar to SPREADER PAN in which it sets. Spreads molten lead around spreader
pan through holes in side. Receives lead as it comes from spout.
- CURING OVEN
- A loop or roller-type drier through which resin treated fabrics are run in
open width at high temperature to convert soluble resin into insoluble compound.
- Outlines of shapes of glass to be followed for cutting and leading
- Removing the tip on a bird's upper beak to prevent infliction of injuries to
- A rectangular, steel tank in which tar and ammonia are separated by settling
according to their differences in specific gravity.
- A machine used in treating ground scrap rubber with chemicals and steam to
restore it as nearly possible to its original physical and chemical state for use
as RECLAIM rubber.
- A flat circular plate that rotates and presents parts to machine at
prescribed intervals. The worker places parts on designated spots on dial.
- An individual integrated circuit also known as a chip. The term is usually
used after the wafer has been scribed and sorted, although it is not limited to
- A device with serrated edge which separates strands of yarn and keeps them
- DOBBY LOOM
- A loom usually used for weaving goods of a nonfloral pattern in which the
interlacings are complicated.
- DRAWING-IN DRAFT
- In weaving, a plan prepared on design paper showing how warp threads are to
be drawn through the heddle to produce desired pattern. A DRAWING-IN DRAFT is
prepared for all fancy patterns.
- DRAWING-IN FRAME
- A rack on which harnesses are hung while warp ends are being drawn through
- DRIFT PIN
- A tapered steel pin for aligning rivet holes before inserting the rivet.
- A tank located below level of gas mains, and connected to main by pipes, for
the purpose of collecting condensed water, gas, and tars which must be drained
from the main continually to prevent congestion and eventual rupture of the pipe.
Capacities of the tanks vary from a few gallons to as much as 500 gallons.
- DROP WIRE
- In textile machines, thin metal strip with an eye through which single
strands of yarn are passed. If the yarn breaks, the wire drops to cut the
electric circuit, thus stopping the machine.
- DRYING CANS
- A machine used in textile mills to dry fabric. Several large heated drums,
wide enough to accommodate one or two widths of cloth, are arranged in tiers.
Cloth threaded through drums contact a large area of each and are rapidly dried.
- DUMPING PIVOT
- A simple steel basket open at top and one side to accommodate ice freezing
containers. The lower corner opposite open side is hinged to facilitate tipping
and removal of ice block.
- DWELL METER
- An electrical meter used to measure dwell or time interval between closing
cycle of distributor points of automobile ignition system. Incorrect spacing of
points results in improper dwell.
- EDGE ROLL
- Rope-like roll of jute core covered with burlap used to build up edges of
upholstered furniture before adding padding.
- ELECTRICAL-DISCHARGE MACHINING
- Removal of metal through action of high-energy electric sparks on surface of
- END EFFECTOR
- Device attached to wrist of industrial robot arm that enables robot to
- ESCAPE WHEEL
- Wheel of escapement in clock or watch that supplies power from mainspring.
It is allowed to 'escape' from pallet at rate governed by balance wheel and
thereby controls motion of train.
- FACE SHEET
- A veneer sheet, of high quality and free from imperfections, used for the top
surface sheet of plywood panels.
- A machining operation that is a form of turning in which the tool is fed at
right angles to axis of workpiece rotation to produce flat surface.
- FAILURE MODE AND EFFECT ANALYSIS
- Detailed listing of potential failures of critical parts and effects on total
- A narrow metal bar set with one or more rows of sharp, pointed pins that comb
through sliver to blend and align fibers.
- FALLER WIRE
- A device on a mule-spinning frame to keep yarn under tension during winding
and to guide it onto bobbins.
- FALSE SELVAGE
- An extra layer of selvage woven on each edge of some looped pile fabrics.
This selvage is formed by floats inserted to hold loop pile during weaving. Both
FALSE SELVAGE and floats are removed after cloth is doffed from loom.
- FALSE-TWIST SPINDLE
- A hollow spindle with small wheel mounted in its aperture used in manufacture
of stretch yarn. Yarn processed through this spindle is commonly referred to as
- FEED CUPS
- A feeding mechanism on a sewing machine on which the needle operates
horizontally. Two wheels or discs rotate in a horizontal plane to pull the
material between them.
- FEEDER TUBE
- A clay tube clamped in orifice of forehearth to capture and hold gob of
molten glass for delivery to bottlemaking machines.
- FELLED SEAM
- A stress-resistant seam formed by joining overlapped, interfolded
garment-part edges with two or three parallel rows of stitching.
- FELLING STITCH
- A sewing stitch that does not completely penetrate the material in which it
is made. Such stitching is used to fasten lining into garments so that the
stitches do not show on the outside.
- Two banks of evenly spaced rollers in FOUR-ROLL CALENDER used for
accumulating fabric to maintain continuous operations while making roll changes
and for taking up slack in fabric prior to calendering.
- FILLING PILE FABRIC
- Fabric in which an extra set of filling yarns forms pile. Examples are
corduroy and velveteen.
- FILM FLAT
- Group of film negatives or positives mounted on transparent plastic film,
colored paper or vinyl which comprise page elements (text and illustrations) of
magazine, book, or other printed material, used in preparation of lithographic
- A siliceous material that absorbs impurities and clarifies oil pressed from
- FINGER BUFF
- Strips of buffing cloth used in manufacture of buffing wheels. These strips
are attached to core of buffing wheel with LACING and form fingerlike
- FIRST-ARTICLE-CONFIGURATION INSPECTION
- Detailed physical inspection by customer and company of first part or
assembly of given series for conformance with authorization change and
- Dried strips of a marsh weed, such as cattail.
- The ridge or line of excess material left on metal or plastic objects along
the parting or closing line of mold. Also known as fin.
- A flat edge ground along a semiconductor crystal to denote crystal
orientation and resistivity and which serves as a reference line during
- FLATLOCK SEWING MACHINE
- A feed-off-the-arm coverstitch machine that sews a flat, nonraveling seam by
joining abutted edges with a top-and-bottom covering stitch.
- FLOWER NAIL
- A long nail with large head that is used as base to create intricate designs
- FOLDING BONE
- A thin strip of fish bone used to fold and press leather edges under.
- FOLLOW BOARD
- See MOLDING BOARD.
- FORM BOARD
- A specified number of form strips fastened together side by side with long
- FORMING CHUCK
- A metal block shaped to contour and attached to machine spindle which serves
dual purpose of holding and rotating cylindrical workpieces and as forming die
to shape workpiece to contour.
- FORM TOOL
- A cutting tool ground to specific contour in order to machine the inverse
contour in workpiece.
- FOTO MAT
- Linotype metal matrices with small film of letter in center.
- FOUR-ROLL CALENDER
- A machine which coats both sides of fabric stock with rubber simultaneously
and rolls sheets to specifications. Also known as Z-calender.
- FRAZING MACHINE
- A machine which guides briar block against cutters to duplicate preselected
pipe shape. A clamp-fitted shaft and a cam follows a master model to shape shank
and lower half of bowl.
- The quality of pulp stock that determines rate at which it parts with water
when being formed into sheet on wire screen or perforated plate. The same quality
is known as freeness, slowness, or wetness according to type of instrument used
to estimate it.
- FRENCH BINDING
- A narrow strip of fabric that is stitched to edge of shoe uppers and folded
over to form smooth finished edge.
- FROTHING MACHINE
- A mixing machine with electrically operated agitating paddles used for mixing
air with latex to obtain desired density.
- FULLING MILL
- A machine that shrinks and felts fibers of woolen cloth through application
of moisture, heat, friction, and pressure. May be used to crush and dust
carbonized vegetable matter from dry woolen cloth.
- FUNNEL APPROACH
- A counseling technique, using open-ended questions in the early stages of
counseling, to collect information, orient the individual, married couple, or
family, and to establish communication. As problems become identified, questions
are less open-ended and more specific to address or clarify aspects of one or
- FUR MACHINE
- A disk-feed sewing machine used for seaming heavy materials to make items,
such as fur and fake fur garments, plush toys, and leather slippers. Layers of
material are guided vertically between the two disks (cups or wheels) and sewn
with a horizontal needle.
- GAMB STICK
- A metal or wooden rod with pointed or hooked ends which are inserted through
the tendons on the hind legs of animal carcass to hold the legs apart while
animal is dressed. The stick has a rind in the center for attaching to a trolley
or an overhead rail.
- GANG KNIFE
- A set of knives, arranged to be raised and lowered by hand, used to slice
fish into several pieces of predetermined length.
- GARNETT MACHINE
- A machine similar to a carding machine, used to open hard-twisted yarn
wastes, rags, and clippings. Cylinders are covered with coarse wire teeth.
- GAS CHECK
- A metal cup, coated with oil or wax, that expands to form a gastight, moving
seal under piston of device used to measure pressure produced within gun barrel
by exploding cartridge.
- GEAR CAGES
- A cluster of gears, bearings, and locking devices usually attached to a
- GEAR GENERATING
- A gear-machining operation in which the cutter teeth have (or simulate) the
shape of mating gear teeth rather than of the space between the teeth, and the
cutting is done as the cutter and gear blank rotate together.
- Pigmented, high purity polyester coating, catalyzed with liquid oxidizers
used to form layer on boat mold prior to application of fiberglass resin layers.
- GIRDLING STICK
- A tool with one end threaded to hold drop, wooden middle section for
handhold, and metal rod on the other end which is held between body and arm to
support and control diamond during girdling.
- An elastic insert in side, front, or panels of a shoe used to decorate or
reinforce, or to allow stretching that will provide additional comfort and
freedom of movement to wearer.
- GROUND RACKING BOARD
- Wooden boards of various lengths and widths that are placed flat on an oil
well floor to form a base for tubing and pipe sections to stand on when sections
are standing up-right in the derrick. Boards are used for the base to prevent
sections from sinking into the ground and getting plugged with soil or mud or to
prevent damage to the threaded ends of pipe and casings.
- Part of bicycle frame that holds fork assembly.
- HARNESS FRAME
- Two wooden laths upon which are suspended series of cords or wires called
- Part of bicycle frame that holds crank and sprocket assembly.
- A fabricated chamber to which series of tubes are joined to permit free
circulation of fluid within water tube boiler.
- HELICAL SPRINGS
- Spiral springs used to hold rows of coil springs together in bedsprings.
- HIGH LEAD
- A cable-log yarding system consisting of a steel or wooden spar near the
yarding machine and a circuit of cable running from the top of the spar to a
block at the rear of the cutting area, which enables logs to be lifted over
obstructions in rough, mountainous terrain where logging tractors cannot be used
- A gear-machining operation in which teeth are generated by rotating HOB and
gear blank against each other with action similar to that of worm gear. See GEAR
- HOG MILL
- A power-driven machine for cutting scrap wood into fine particles suitable
for blowing as fuel into fireboxes or boilers with compressed-air jet.
- HOMOGENIZED LEAF
- A tobacco wrapper material made from powdered tobacco and other substances
that cause ingredients to stick together.
- HOOKER MACHINE
- A machine that folds cloth by means of blade that guides fabric back and
forth across surface of table.
- A device mounted on a unit similar to a sewing machine called an
- A tank with horizontal-in-tank agitator, motor, pumps, and piping system,
mounted on truck bed, used to cover areas, such as highway median strips,
hillsides, and fields with a mixture of grass seed, fertilizer, and mulch.
- IMPULSE PIN
- The pin mounted on the balance wheel of a clock or watch that receives
impulse from pallet fork.
- Characteristic of timepiece movement resulting from jewel pin being in line
of center on ESCAPE WHEEL, pallet, and balance wheel when hairspring is
unstressed. In this condition the strokes of the escape wheel teeth against
pallet stones will occur at equal intervals. A timepiece is out of beat when
strokes or ticks occur at unequal intervals.
- Moving workpiece or toolholding device, such as a turret, to a series of
regularly spaced positions to repeat an operation or to perform a series of
operations at predetermined intervals.
- The point at which editing/copying of a portion of audio, music, video, or
graphics onto a videotape begins.
- INVOLUTE CHECKER
- A device for inspecting involute curves on teeth of gears, splines, etc.
- JACQUARD LOOM
- Loom equipped with device for weaving figured fabrics. The Jacquard
attachment consists of mechanism controlled by perforated cards which cause warp
threads to be lifted in proper succession for producing figure.
- Small pointed metal instrument, resembling sharpened pencil, used in
assembling ribs of expansion metal watch bands.
- JUMPBASTING SEWING MACHINE
- A basting machine that allows free movement of fabric over the work bed to
produce a stitch of variable length and direction. There is no feed mechanism or
presser foot. A plunger-like device (needle stripper) encloses the needle and
holds the fabric down only long enough for the needle to penetrate and withdraw.
Used for basting with a long, loose stitch over large areas to hold plies of
fabric together, as in preliminary positioning of coat layers.
- JUMP IRON
- A heavy iron, supported by movable arm, designed to eject steam through holes
in bottom. A pedal is depressed to lower iron and to apply pressure to article
being pressed. The iron is pushed back and forth manually.
- A control for water turbines which varies pitch of blades in accordance with
load, resulting in high efficiency over large-load range.
- A circular metal strip with serrated edges used in manufacture of buffing
wheels to secure buffing material to center of wheel. The serrated edges are bent
outward to form groove in which material is inserted.
- LAP I
- A tool, usually of softer material than workpiece and of complementary shape,
which is charged with LAPPING COMPOUND. See LAPPING.
- LAP II
- A roll of loosely matted cotton fiber.
- LAP III
- A horizontal wheel or disk made of cast iron, used to fine-grind flat
surfaces on diamonds or other stones.
- Smoothing, finishing, or achieving an extremely close tolerance (e.g.,
0.000002 inch in gauge block manufacture) on metal surface by means of a LAP I
that is charged with LAPPING COMPOUND and rubbed against workpiece in rotary and
reciprocating motion, either by hand or machine. Matching workpieces may be
lapped against each other to assure a close fit. Sometimes used loosely to denote
fine grinding or honing.
- LAPPING COMPOUND
- A fine abrasive material, usually mixed with oil, water, or some other
vehicle in the form of paste, which becomes embedded or charged in the LAP. See
- A term used in textile industry denoting material (lap, thread, fibers, etc.)
which becomes entangled in or wound about machinery.
- The operation of tacking a shoe upper and insole to a last or of turning down
and sticking together the upper and sole of rubber footwear by hand or machine.
- LASTING TOOL
- A combination handtool usually composed of hammerhead, pincers, and tack
puller used in construction of shoes. Also known as lasting pincers or
- An automatic mechanism that receives, stacks, and jogs sheets of paper into
piles. It may be attached to machines, such as cutters, printing presses, or
ruling machines. Generally equipped with counting and tabbing devices.
- LAYOUT MACHINE
- Modified vernier height gauge, having a scriber on the end of an extending
arm, which when positioned next to workpiece, scribes exact locations of
reference points and lines.
- LEACH TANK
- A tank containing hot water into which uncured balloons are dipped to remove
bitter taste of coagulant.
- LEAD WIRES
- Soft metal wires used to take impressions between two adjoining parts to
determine clearances measured by micrometers.
- LEASE STRING
- Strings inserted between the threads of a warp to hold the threads in the
same relative position for drawing-in or tying to old warp.
- LETOFF RACK
- A rack that operates with braking action permitting machine to pull material
from a roll.
- LIGHT TABLE
- A table or bench having translucent top over a light source. It is used in
examining objects where it is desired that no shadow will be cast.
- Flat glass cut to specified size from continuous sheet of glass.
- LOADING BOX
- A receptacle, usually part of or rigidly attached to a lever, into which
molten metal or equivalent may be poured to aid in balancing scale under a zero
- LOOM BEAM
- A large wood or metal cylinder on which are wound the warp threads for a
- LOOPING LINE
- A line of stitches knitted into both sides of the open toe of seamless hose
as a guide along which the looper must set the stitches to produce a straight
- LOOPING MACHINE
- A machine that knits two parts of knitted garment or stocking together.
- LUMBER SCALE
- A ruler equipped with a calibrated scale used to measure the width of
rough-sawed lumber of known thickness and length and to convert the measurement
into board feet.
- A liquid which hardens when dry to give rigidity to back of shoe.
- A bakery product wrapped around a filling to form lumpias (ethnic dish from
- MASK MIRROR
- A glass plate, with silvered images of facial features imprinted, used to
block out portions of a photograph in preparing a montage.
- MASTER STRAIGHTEDGE
- A straight slender bar made of rigid material, which is placed across wide
points of contact to hold the level on a structure to be leveled.
- MATHEMATICAL MODEL
- The general characterization of a process, object, or concept, in terms of
mathematics, which enables the relatively simple manipulation of variables to be
accomplished in order to determine how the process, object, or concept would
behave in different situations.
- MEASURING WIRES
- Accurately made short wires of standard diameters, for use in precision
measuring of gear or thread dimensions.
- MECHANICAL PRINT
- An engineering drawing that is the actual pictorial presentation of a
product, part, or machine, showing dimensions, type of material, wiring, and
- An instrument used to measure insulation resistance or electrical resistance
of electrical equipment, such as power line poles.
- A small, soft-steel cylinder upon surface of which a design in relief is made
by rolling in contact with die.
- MINERAL WOOL BLANKET
- A continuous ribbon of mineral wool fibers, 2 to 4 inches thick and up to 10
feet wide, that is cut into insulation batts and felts.
- MOLDING BOARD
- A board on which the patterns and drag are placed when making the drag part
of a mold. Also known as FOLLOW BOARD.
- MOLD-PRINTING BOARD
- The board on which molds are fixed in rows and which, when placed upside down
over a tray of leveled starch leaves indentations into which fluid candy is
- A hollow stainless-steel tube, into which enriched uranium fuel elements are
- MORTAR GUIDE
- A metal band that fits the edge of a stone and has a projecting side the
thickness of a joint.
- A form cadmium metal takes when the molten metal drops into cold water. This
bubblelike form of solidified metal enhances dissolution.
- Nickel positive electroplate made by electrodeposition on master
electroplate. Required in making stamper, which presses positive of recording
into phonograph records.
- The process of heating tobacco to ferment and sweat out bitter gums, ammonia
compounds, and impurities which impair flavor and color of tobacco leaves.
- The process of contracting size of knit articles, especially a stocking, by
taking two stitches in one.
- NECK RING
- A cast iron ring which is used in conjunction with mold to form neck of
- NECKTIE-CENTRALIZING SEWING MACHINE
- A machine that sews the lengthwise seam on a necktie. Two types of machines
are in use: One is equipped with a hook in front of the needle and another under
the bed of the machine to assist in forming an unusually stretchable
single-thread stitch. The other is equipped with a feed track resembling a
tractor tread in appearance, that pulls fabric edges up and down over a
stationary, 55-inch, horizontal needle to simulate handstitching.
- NEEDLE JACKS
- Small metal pieces, fitted into grooves in needlebed of knitting machine,
that transmit reciprocating motion to needles.
- OPTICAL SCANNER
- A device that automatically samples or verifies a number of measuring points
and indicates those that have drifted from their desired values.
- ORDERING MACHINE
- A machine in which tobacco is brought to desired moisture content by
application of water or steam spray in cylindrical device or compartment through
which conveyor belt passes.
- OUTFLOW QUENCH STICK
- A device on spinning machine that quenches (cools) formed synthetic filaments
upon ejection from spinnerette.
- The point at which editing/copying of a portion of audio, music, video, or
graphics onto a videotape stops.
- OVERCOIL HAIRSPRING; OVERCOILING
- Hairspring of a watch with its outer coil raised above plane of spring and
then bent so as to terminate in a curve that is concentric with remaining coils.
Purpose is to provide for concentric winding and unwinding of spring thereby
eliminating side thrust against bearings. Overcoiling is the act of bending outer
- OVERLOCK SEWING MACHINE
- A machine that sews an overedge stitch, looping over fabric edges to prevent
edge fraying or to seam two or more plies.
- An assembly containing a spinnerette, filter screen, gaskets, and sand
through which polymer is passed to filter out impurities and form filaments by
forcing polymer through spinnerette.
- PACKAGE DYEING MACHINE
- A dyeing machine resembling large pressure cooker. The yarn to be dyed is
wound on perforated beams or tubes so that dye solution can be circulated through
- PANTOGRAPH MECHANISM
- An attachment used with conventional metal cutting machines, which allows for
two (or three) dimensional duplication of a template. The exact or scalar
movements of the tracer spindle over the template is transmitted to the cutter
spindle which cuts the template pattern from a blank.
- PAPER TAPE
- A strip of paper capable of storing or recording information. Storage may be
in the form of punched holes, partially punched holes, carbonization or chemical
change of impregnated material, or by imprinting. Some PAPER TAPES, such as
punched PAPER TAPES, are capable of being read by the input device of a computer
or a transmitting device by sensing the pattern of holes which represent coded
- PENCIL EDGE
- The round or convex surface edge of glass or mirror after edges have been
ground. To apply such edge by grinding.
- A short-handled device with a pointed metal end used to move and align logs
and lumber inside a sawmill or in confined areas.
- One thread of filling either before weaving or in cloth. Number of picks per
inch of warp is measure of fineness of fabric.
- PICOT BAR
- A bar on knitting machine that holds slender metal rods (picot points) used
to knit a row of large, wide stitches (picot stripe) after welt is knitted.
- PIECE UP
- The joining or union of two or more ends of sliver, slubbing, roving, or yarn
by twisting or intermingling fiber ends with fingers.
- PILE WIRES
- Strips of metal that are inserted into shed of looms to form pile fabrics,
such as carpeting.
- PILLAR PLATE
- Base plate which determines size and shape of clock or watch movement. It is
recessed and drilled to form foundation for assembly of various parts and pivots
which comprise movement.
- PINCH CLEAT
- A metal cleat that fits around ends of steel bailing straps. When pinched by
strapping tool cleat secures ends and keeps strap taut on bale.
- PIN JACK
- A cast iron pedestal, usually fastened to shoemaker's bench, on which shoe
last is placed during processing operations.
- PITCHED WORT
- Wort (unfermented beer) with added yeast to promote fermentation.
- PITCH FINGER
- A metal rod mounted over journal of mill that is used to pitch design on mill
in register with other portions of design during engraving process.
- That element of conventional scale lever designed to transmit external forces
through its knife edge.
- PLANER GAUGE
- A work aid consisting of two right-triangle ground metal blocks fastened
together to enable user to adjust their outer parallel surfaces to any dimension
within a given range by sliding one block on the other.
- PLANETARY ACTION
- A double mechanical motion in which a tool is rotated on a center, while that
center is revolved in another circle at the same time.
- PLATE PRESS
- A filter press that removes water from gluten.
- Rubber block marked to indicate hat size.
- Process of removing acid and impurities from nitrocotton prior to processing
- POISE; POISING
- Equal distribution of mass of timepiece balance wheel around axis of rotation
that neutralizes effect of gravity. POISING is accomplished by removing or adding
weight to balance wheel to create equal distribution of mass around axis.
- Equipment that measures and records physiologic patterns of sleep.
- POWER PRESS
- A machine, used in conjunction with dies, for forming, molding, cutting, and
shaping of materials under great pressure.
- PREFORM RUBBER
- Uncured rubber that is precut to provide specific amount of rubber necessary
to fill each mold cavity.
- The time (usually in seconds) it takes a videotape to get up to speed, i.e.,
the lapse time between pressing the play button and when the picture appears on
the monitor for the viewing audience to see.
- A flexible woven cord with an explosive core which detonates at an extremely
fast velocity of over 20,000 feet per second.
- PRINTING ROLLER
- See PRINTING SHELL.
- PRINTING SHELL
- A large, engraved copper roller used to print designs in color on cloth when
mounted in printing machine.
- PROGRAMMABLE CONTROLLER
- A device which, after being programmed by means of its keyboard and display
screen, starts, stops, and coordinates one or more pieces of automated machinery.
- PROGRESSIVE DIE
- An integrated stamping die made up of several die units or stations through
which workpiece is indexed one station at a time for a series of operations.
Usually, a continuous strip of sheet metal is fed into press and completely
formed workpiece is ejected from other end with each action of press.
- PROJECTION (SHADOW) COMPARATOR MACHINE
- Floor-mounted machine that employs intense light to project shadow of
machined workpiece onto master drawing which is laid on a lighted table screen.
The shadow is aligned with the master drawing to determine conformance of
workpiece to specifications.
- Scissors-like tool with three tines, one on one handle and two on other, used
for gripping and twisting.
- A device for passing measured amount of gas or compressed air under constant
pressure through gas meters to test accuracy of meters.
- PULL-TEST MACHINE
- A testing device in which pounds of pull, necessary to pull bullet out of
cartridge case, are measured.
- PULSATION RECORDER
- An instrument equipped with a revolving drum and a pressure-sensitive pen
which marks the duration and intensity of vacuum-cycle wave forms when its probe
is inserted into a vacuum line. It is used to test the operation of automatic
- See IN-BEAT.
- The standard unit of measure for lace. It is the amount of lace woven by
1,920 single motions of loom.
- RADIAL DRILL PRESS
- A machine tool used primarily for metal drilling, which consists of central
column and horizontal radial arm to which a vertical drilling spindle is
- An arrangement of machines used to perform a number of yarn- or
cloth-processing operations continuously by feeding material to each unit in
succession automatically and without interruption.
- The process of removing ore dust that has accumulated on wires in the stack
treater to recover the ore.
- Rubber material recovered from scrap rubber goods by chemical treatment.
- REED HOOK
- A flat metal tool, similar to crochet hook, used for drawing individual
strands of yarn through reed of loom.
- Nylon monofilament or copper wire used to reinforce and shape sweatbands and
brims on hats and caps.
- REEF NET
- A bag-like net anchored to boats or the shore to simulate a V-shaped reef in
- REFLECTANCE METER
- A small, bench-mounted device used to compare the whiteness of bleached paper
pulp to a standard white color.
- Process of verifying alcoholic content of recently distilled liquor to
determine quantity of diluent necessary to be added to liquor to obtain specified
- REGISTER WHEEL
- A large indexed wheel on pantograph or engraving machine. A gross setting on
larger register wheel results in precise placement of design on smaller printing
- A machining process in which a FORM TOOL is used to cut teeth for cutting
tools to specified contour.
- Pieces of crystal ingot not meeting specifications used as material to grow
- A photo plate on which an enlarged copy of a semiconductor circuit layer
pattern is reproduced and used in the production of photo masks.
- ROBOT CONTROLLER
- A computerized device that provides the signals that direct the motions of
the robot, so that it is both positioned and oriented correctly in space over
- ROD TRANSFER DEVICE
- A metal box-shaped device approximately eight inches tall, three inches wide,
and three inches deep that is open on one side with a rectangular slot on the
end. There is a swivel eye on the other end of the device where a rod hoist cable
is attached. The rectangular opening at the lower end of the device is fitted on
the square neck of the rod to support rod sections as they are being transferred
to and from holding slots and lifting clamp.
- ROLLING TABLE
- A heated press, the upper platen of which lowers and pivots on a shaft, to
compress and roll resin impregnated fabrics onto mandrel.
- ROLL PICKER
- A pneumatic tool which removes lint and trash from spinning and roving frames
by winding it on rapidly rotating spindle.
- ROPE FORM
- The form in which cloth is gathered or bunched into longitudinal folds by
being drawn through a ring or series of rings. Some processing is more easily
accomplished with cloth in this form.
- ROTARY LATHE
- A machine for cutting thin sheets of veneer from logs. The log is supported
and rotated on horizontal axis as heavy steel knife is fed against its surface
to slice thin sheet of wood from circumference.
- ROUNDING JACK
- A handtool for trimming hat brims. One end of tool is fitted with sharp blade
and the other end is shaped to rest on crown of hat. The tool is drawn around hat
brim, using crown as guide, to cut off excess material.
- SCRATCHING TOOL
- A four-pronged, long-handled tool similar to a pitch fork and used to pull
up loops and uncut ends of rug pile.
- SCREEN TINTS
- Film used to produce shade of color or black.
- A finished edge on flat glass or mirrors on which the sharp corners are
removed by an abrasive belt to form a semirounded edge.
- A notched metal strip, tooled to 0.0005 inch thickness, used to remove small
particles of threads from brass bobbins.
- SET POINT
- A point in space, expressed in three dimensional coordinates, at which tip
of cutting tool of automatic machine is set before the start of machining
- SHADOW LINES
- Lines on power ripsaw machine table cast by wire hung between light source
and table. Used as guides by saw operators in aligning boards before sawing.
- SHERIFF'S SALE
- A public sale of properties lawfully seized by the county as directed by a
civil court order; money received reverts to county treasury.
- SHOOT WIRE
- Wires running short way of cloth or screen as woven.
- SHORT-CYCLE SEWING MACHINE
- A semiautomatic machine that sews a limited number of stitches to tack layers
of fabric, attach buttons, or make buttonholes.
- SHOT PAN
- A pan, resembling frying pan, with equidistantly spaced holes in bottom
through which molten lead is dropped to form shot pellets. Pans are numbered
according to size of holes.
- SHUTTLE BINDER
- A wood or iron lever located at front or back of, and projecting slightly
into, the shuttle box. Its purpose is to check force of shuttle as it enters the
- SIEVE CLOTH
- The fabric belts on printing machine which absorb color solutions from color
trays and convey it to rollers that print designs on wallpaper.
- SIGHTING RIB
- Raised metal rib along entire outside length of shotgun barrel which is
matted (knurled) to provide a glare-proof sighting surface.
- An elevator platform that submerges felt hat cones in tub of hot water to
strengthen cohesion of fur fibers.
- SKIRTLIKE UPPER
- The sewn-together vamp, quarters, and counter of nonrubber upper of an
article of footwear before rubber, composition, or cork sole is put on. The
bottom edges of upper are cemented all around, like the hem of a skirt, for
bonding with sole.
- The first fly frame for drawing and twisting slivers to form roving.
- SPACE GAUGE
- A rectangular metal piece with parallel rows of fine grooves extending across
its face, used as a guide for spacing needles in the needle bar of a knitting
- SPINNING BOX
- A device used in rayon manufacturing for piling thread into ring-shaped
CAKES. The thread is drawn into spinning box through glass funnel and wound by
- SPOIL PILES
- Earth and rock removed from coal, ore, or rock deposit in strip mine, open
pit, or quarry.
- A powder form of cadmium with a high zinc content.
- A machining process in which the area around a hole is milled to smooth, flat
surface by application of a rotating tool with cutting edges on its end or face.
- SPREADER PAN
- A pan, resembling a frying pan, with holes around the side which sets on legs
in the SHOT PAN and spreads lead evenly around shot pan.
- SPRUNG OIL
- Oil that has been allowed to separate from water and rise to the surface by
means of gravity.
- SPUR CHUCK
- A stubby, pronged fork attached to driving spindle of lathe to assist in
mounting and centering workpieces.
- Bombarding metal surface with positive ions to form fine-grained coating on
- A strip of uncured rubber, approximately tread-width, which is applied to
BAND stock to reduce friction and promote adhesion between plies of completed
- STABILITY GAUGE
- An instrument equipped with needle gauge used to indicate variation in or
inadequacy of vacuum in automatic milking systems.
- STANDARD SIZE SYSTEM
- A system decreed by Edward II in 1324 that established a variation of
one-sixth of an inch in length between half sizes and one-third of an inch in
length between whole sizes of shoes.
- STEAM LANCE
- A long pipe attached to a steam source, through which steam under pressure
is blown into boiler tubes to remove soot and sludge.
- An enclosed microphone, used to record speech on tape, which renders the
spoken word inaudible to other persons in the room.
- STIPPLING TOOL
- A small block of metal, the under surface of which is covered with small
projections. It is used to make multiple indentations in wood by striking top of
tool with hammer or mallet.
- A shackle which transmits to a connection load from only one lever.
- A process whereby barbed needles are used to bond or entangle web fibers to
produce a nonwoven fabric.
- STITCHING WHEEL
- A wheel mounted in the bed of an ULTRASONIC SEAMING MACHINE. STITCHING WHEEL
has raised pattern that simulates sewing machine stitches. Wheels are changed to
produce various decorative effects.
- STRAPPING TOOL
- A hand-operated device that pulls taut strip-steel straps wrapped around a
bale and secures ends by pinching a cleat placed around overlapping ends of
- A precision instrument used to make a pencil mark around a tooth indicating
its greatest circumference in any one position relative to the vertical.
- SWING-FOLDING ATTACHMENT
- A device, usually attached to the rear of a processing machine, to fold cloth
coming from the machine. It consists of a pair of thin parallel rollers mounted
between two arms that swing like a pendulum, laying cloth in loose folds.
- SWING WEIGHT
- The swing weight of a golf club is a measure of the leverage of the club,
from beyond a fixed point, applied against the end of the handle. It is the
weight felt by the golfer when he swings the club.
- TAKEUP ROLL
- A roller, operating continuously or intermittently, that winds long lengths
of material after it has passed through a machine.
- TARGET BLOCK
- A tungsten block, having the same thickness as a workpiece to be welded by
electron-beam system, used to substitute for workpiece during system setup.
- TEACH PENDANT
- A hand held control box connected to the robot by an electrical cable used
to actuate, for programming and re-programming purposes, the motions of the robot
performing its prescribed task.
- TELESCOPING GAUGE
- A precision measuring instrument the end of which can be positioned inside
hole or opening and expanded to touch walls; interior dimension can then either
be read on calibrations of gauge or measured with micrometer.
- An electrical device that transmits and prints transportation-routing
information on passenger tickets.
- TEMPERATURE POTENTIOMETER
- A device to take temperature readings at any given point via transmission
through thermocouples to reading device. It is equipped with a dial to select the
thermocouple (point) from which to take a reading.
- TENSION GUIDE
- A device used as a guide to provide specified tension during winding, coning,
sizing, and warping. This device contains fingers, disks, or washers that apply
- TENTER FRAME
- A machine that dries and stretches cloth to its original width and
straightens its weave after a finishing process.
- A machine (similar to a rotary-type lawn mower with wire claws, rather than
blades, on the rotating bar) used to claw and lift thatch from lawn.
- THRUST END ASSEMBLY
- The forward end of a turbine at which steam enters.
- TIDAL PEN
- Large rectangular ponds constructed on an island located in a natural shrimp
growing area with screened gates at the ends to allow pens to be flushed by tidal
flow. Gates can be raised for impoundment of shrimp larvae and shrimp spawners.
- TIMER DRUM
- A metal drum containing a series of paralleled slots extending around its
circumference to hold timing buttons that trip solenoid switches, as drum
revolves, to control operation of bottlemaking machine.
- TOE BOARD
- The portion of a board on which toe of stocking is shaped.
- TRACER POINT
- A metal rod placed in the chuck of the master spindle of a wood-carving
machine, used to follow around the contour of a carving pattern.
- TRANSFER BAR
- A rectangular metal bar used to transfer knitted garment parts from one
full-fashioned knitting machine onto the needle bar of another.
- TRANSFER POINT
- The needlelike projections on a TRANSFER BAR or transfer ring over which
stitches of knitted material are hung when the material is transferred from one
machine to another.
- Glass enclosed container housing a thermometer and a hydrometer through which
distilled liquor flows, allowing the temperature and specific gravity proof of
liquor to be measured.
- TRIP BUTTONS
- Small bolts locked in slots on TIMER DRUMS to trip solenoid switches that
start and stop functions of bottlemaking machines.
- TRUING I
- The shaping of grinding wheel for purpose of producing consistent flatness
or contour on the ground workpiece. Usually accomplished by application of
diamond, abrasive, or hard-metal tool.
- TRUING II
- Technique used for correcting errors in timepiece balance wheels and
hairsprings. Balance wheel truing is accomplished by bending the wheel rim until
it lies in a single plane and is concentric with and perpendicular to the staff
axis. Hairspring errors are either in the round (coils are not perfectly
concentric with collet) or in the flat (coils are not in same plane as collet).
Hairsprings are trued by bending coil to correct faulty colleting.
- The portion of a paper bag without a bottom.
- TUNNEL HEADING
- That part of a tunnel where digging operations are performed.
- TURNER TUBES
- A device used in turning gloves, with corresponding rods that push the finger
tips of the glove into the tube, partially turning it. Turning is completed
manually by worker or automatically on machine.
- TYPING ELEMENT
- Ball-shaped component of electric typewriters that contains raised
characters, such as alpha and numeric characters and special symbols.
- ULTRASONIC HORN
- A resonant bar or metal section which transfers energy from converter to
- ULTRASONIC SEAMING MACHINE
- A machine that uses high-frequency sound waves to fuse layers of
thermoplastic material simulating a stitchline. The machine resembles a sewing
machine in appearance and operation but uses no thread and has a HORN and
STITCHING WHEEL for impressing a stitch pattern. The stitching wheel can be
changed to produce various decorative effects.
- VENEER BLOCK
- A log cut to length for peeling or slicing into veneer.
- Process of determining that length of timepiece hairspring will cause balance
wheel to vibrate a fixed number of times per hour. Factors considered are length,
width, thickness, and strength of hairspring.
- WARP WIRE
- Wires running the long way of the cloth or screen as woven.
- WEBBING STRETCHER
- A handtool used to stretch webbing across furniture seat frames.
- WELD CONTROLLER
- A programmable device which controls the amperage, pressure, and dwell (time)
of welding guns attached to automatic machinery.
- WELT BAR
- A bar of a knitting machine containing a row of small steel hooks (welt
points) that hold the first loops or stitch of fabric until the welt is knitted.
- WELT ROD
- A small metal rod used to facilitate turning of welt on full-fashioned
stockings and to wind hose on takeup roller.
- WHIRLING MACHINE
- Machine that distributes photosensitive solution over surface of photographic
printing plates by means of a rotating or whirling action.
- WHITING COMPOUND
- A mixture of powdered chalk and liquid glue used to form wood sealer or
priming base for further application of paint.
- Strands of asbestos twisted together and used for making asbestos rope,
packing for steam valves, and as a seal for oven or furnace doors.
- WINDUP RACK
- A rack that has a continuous drive action which winds long lengths of
material into a roll after material has passed through a machine.
- YARN CARRIER
- In flat knitting, the sliding frame above the needlebeds that hold the cams
and yarn guides and carries them to and fro.
- ZIGZAG SEWING MACHINE
- A machine that sews with an oscillating needle. The pattern of the stitches can be varied by changing cams. Used where a decorative, stretchable stitch is needed.
1Editor's note: In this Web version of the DOT, definitions are not italicized in the occupational definition.