- Industri: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who laps metal objects, such as gauges and machine parts, to specifications within tolerances as fine as 0.00001 inch, applying knowledge of abrasives and lapping procedures. Responsibilities include:
* Measures workpiece with instrument, such as optical comparator, compares workpiece dimensions with specifications to ascertain amount of stock to be removed, and estimates number of lapping strokes required.
* Mounts workpiece in fixture, or in power-driven mechanism, using wrenches and keys, and positions work aids, such as parallel bars and rods to guide motion of lap i or workpiece.
* Files grooves in surface of lap to hold lapping compound. Applies compound to workpiece and rubs lap across workpiece with rotary or reciprocating motion, feeling friction and applying required pressure based on previous experience, to attain specified tolerance.
* Measures workpiece to verify conformance to specifications, using special gauges.
* Straightens or polishes rods by inserting and pressing them between two rollers with lapping compound.
Industry:Professional careers
A professional who operates jeweler's lathe to cut inside or outside curvature in contact lens blanks. Responsibilities include:
* Reads prescription to determine lens thickness and dioptric power and converts specified dioptric power to radius dimensions, using conversion table.
* Inserts plastic blank in holding chuck of lathe.
* Adjusts cutting tool mechanism for specified radius of inside or outside curvature and depth of cut.
* Starts lathe and turns crank to advance cutting tool.
* Observes gauge and readjusts lathe to prevent excessive cutting.
* Pulls control arm to move cutting tool across face of lens.
* Removes lens from chuck and examines lens for smoothness of cut.
* Measures lens to verify compliance with specifications, using thickness gauge and calipers.
* Tapes finished lens to work order and places lens in routing box.
Industry:Professional careers
A professional who reconditions, tests, and calibrates positive displacement gas meters, using handtools and test equipment. Responsibilities include:
* Dismantles gas meter case, diaphragm assembly, and connecting rods, using soldering iron and handtools.
* Positions and solders diaphragm and diaphragm rings in dismantled meter case.
* Inserts and solders flow-control valves in place, using soldering iron and guide wires.
* Moves shaft connected to valve to test freedom of movement.
* Adjusts shaft, using pliers, or resolders shaft to correct defective operation.
* Solders index assembly in position and connects assembly to activating mechanism.
* Moves activating arms to extreme extension to test freedom of movement.
* Adjusts valve mechanism to calibrate meter registration in accordance with public utilities commission specifications.
* Repositions and resolders connecting rods to provide sufficient clearance.
* Resolders case seams to seal meter.
* Attaches airhose at meter inlet to pressurize meter and test ability to register passage of low air volume.
* Attaches pressurized meter to fixture which submerges meter under water to test for leaks.
* May inspect, repair, and maintain gas meters used to measure volume of natural gas flowing from producing wells to processing plant and be designated field operator.
Industry:Professional careers
A professional who performs any combination of following tasks to fabricate clock and watch dials. Responsibilities include:
* Cuts out dial blanks, using handtools.
* Solders holding feet to dial, using soldering iron.
* Brushes, buffs, and polishes dial, using variety of abrasive wheels.
* Plates dials with silver, gold, nickel, or other metals.
* Stakes numerals and numeral indicators, such as diamonds, to dial.
* Prints designs, numerals, and company's name on dials.
* Inspects completed dials for dirt and scratches, completeness of printed designs, and adherence to dimension specifications.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who sets up and operates pantograph engraving machine to engrave designs or lettering on engraving dies, nameplates, stamps or seals, following two or three-dimensional pattern or blueprint. Responsibilities include:
* Positions and secures pattern to workpiece on cutting table, using rule, square, calipers, and fixtures.
* Sets reduction scale and controls of pantograph to attain specified size of reproduction on workpiece and height, depth, and width of cut.
* Sharpens cutting tools on cutter grinder.
* Inserts cutting tool into spindle of machine and secures it with wrench.
* Starts machine and lowers stylus to beginning point on pattern.
* Guides stylus over pattern.
* Observes action of cutting tool and adjusts movement of stylus to ensure accurate reproduction and verifies conformance to specifications, using micrometers and calipers.
* May observe action of cutting tool through microscope.
Industry:Professional careers
A professional who examines typed characters and exterior features of typewriter, such as serial number and carriage model, for conformance to specifications. Responsibilities include:
* Verifies serial number, model carriage, front panel, and type style against specifications.
* Measures width of type guide, using go-not-go gauge.
* Compares arrangement of key tops with diagram stick to verify positions of characters.
* Types line-of-write on sample sheet and examines typing for defects, such as characters above or below line-of-write, heavy or light impressions, cutting into or embossing paper, and uneven spacing or tilted characters.
* Marks sample sheet with prescribed symbols to indicate defects.
* Places sheet, ticket, and machine on conveyor for realigning or stamps inspection number on tickets and papers of approved machine and posts serial number to production report.
* Determines alignment and looseness of specified parts, using screwdriver.
Industry:Professional careers
A professional who tends hydraulic press that compresses powder in cardboard cases for use as pyrotechnic (firework) flares and signals. Responsibilities include:
* Places cases in mold of press and locks mold.
* Weighs and pours specified amounts of powder into cases.
* Pulls lever or pushes button to raise press bed and force ram into mold to compress powder in case.
* Releases pressure and removes mold.
* Breaks open molds with mallet and removes containers.
* May add specified quantities of explosive powder to form igniting charge.
* May be designated according to type of pyrotechnic loaded as incendiary grenade press tender; smoke signal press tender; star signal press tender.
Industry:Professional careers
A professional who examines clock and watch dials for surface and mechanical defects, using loupe, gauges, and pick. Responsibilities include:
* Examines dials for surface defects, such as scratches, finger marks, double lines in printing of numerals, and defective lacquer coating, using loupe.
* Turns movement, dial side down, to determine if watch hands slip.
* Inspects hands to determine if they are aligned with numerals, are specified distances apart, and that they do not touch dial or crystal, using gauges.
* Moves second hand to ascertain if hand slips on arbor, using pick.
* Inspects dials for centering of center and second holes, using gauges.
* May bake dials in oven for specified time to harden lacquer coating.
Industry:Professional careers
A professional who positions flat pieces, such as clutch levers and escape wheels, on circular metal blocks or into recesses in blocks preparatory to grinding operation. Responsibilities include:
* Heats block and applies shellac.
* Places pieces over surface of block, using tweezers.
* Reheats block, places sheet of paper on top of block, fits press block directly over circular block, and applies pressure in screw press to position pieces firmly in shellac.
* Removes pieces from press, and inspects parts for proper position prior to grinding process.
* Blocks parts, such as wheels and screws, using suction device.
* Heats, shellacs, and presses loaded blocks to secure parts.
* May spread layer of vaseline over block to hold parts.
Industry:Professional careers
