1. Inspects optical glass immersed in chemical bath, to detect striae: Selects premixed chemical solution or mixes liquid chemicals in tank according to refraction index and grade of glass. 2. Immerses glass in bath and focuses Burton lamp, collimating light, or striae scope on glass to detect internal stresses. 3. …
1. Tends machine that mixes ground phosphate with sulfuric acid to produce superphosphate: Pulls levers to open storage tank or hopper and admit materials into weighing hopper of machine. 2. Pulls lever to open bottom of weighing hopper and dump materials into mixer. 3. Tests sulfuric acid to determine if …
1. Tends equipment, such as elevators, drags, and scrolls, that conveys wet sugar to granulator scrolls and dry sugar to separator screens: Signals GRANULATOR OPERATOR with bell signal to stop granulator when content of wet-sugar bins is low or dry-sugar bins are congested. 2. Washes equipment with hose and directs …
1. Feeds dyed cotton or synthetic raw stock into hopper of extractor that removes liquid by forcing cotton through rollers. 2. Cleans machine, using steam and airhose.
1. Tends wet end of machine that cuts and paints wallboard, as directed by FOURDRINIER-MACHINE OPERATOR: Turns valve to regulate flow of paint onto wet board. 2. Turns handwheel to adjust cutters. 3. Guides end of wet-board mat from pressure rolls onto tipple rolls at start of each new run. …
1. Tends wet end of forming machine that forces viscose fluid between adjustable metal tips and into acid bath that coagulates fluid into continuous sheets of cellophane: Threads sheet through rollers and smooths moving sheet to remove slack and wrinkles. 2. Performs titration test to determine strength of acid bath …
1. Tends low pressure kettle and auxiliary equipment to coagulate latex particles in thiokol latex suspension: Opens valves and pumps specified amount of latex suspension and water into kettle. 2. Starts agitator and turns steam valve to heat solution to specified temperature. 3. Turns valve to admit acid into solution. …
1. Tends battery of machines that form continuous sheets of pulp from woodpulp slush: Starts machines and turns valves to regulate flow of slush pulp into machine vat. 2. Turns handwheels to adjust feed cylinders in vat, pressure of press rolls, and tension on pickup felt to produce pulp sheet …
1. Tends machine that presses decorative indentations on welt to separate or simulate stitches: Positions shoe against guide on machine bed. 2. Pulls lever to adjust blade for stitch length when separating stitches. 3. Depresses pedal to raise bed, pressing welt against machine head. 4. Holds welt under indenter blade …
1. Tends machine that trims excess welting material from inside edge of hat body or brim: Turns screws to adjust depth of cut of machine blade, using screwdriver. 2. Positions edge of hat body or brim against machine guide and pulls lever to lower presser foot onto material. 3. Depresses …
1. Tends machine that cuts welt strip at heel seat of lasted shoe and tacks welt ends to insole preparatory to bottoming operations: Turns wheel to adjust holding device to fit shoe. 2. Positions shoe on movable pin jack. 3. Pushes pin jack under machine head and depresses pedal to …
1. Tends welt-cutting machine that cuts long narrow leather blockers into smaller sections for use as welts: Places ends of heavy paper strip in machine to cover leather strip when placed in cutting position. 2. Positions end of leather strip under paper at point just before paper strip passes over …
1. Tends welding, brazing, or soldering equipment that joins metal components of products, such as auto, aircraft, and jewelry parts, brackets, panels, housings, and electric circuit boards: Lifts metal parts and loads in welding, brazing, or soldering machine. 2. Moves lever to lock parts in position. 3. Presses foot controls …
1. Controls variety of machines to mix, dip, grind, and bake flux onto electric welding rods: Operates bandsaw to cut welding rod stock to specified length. 2. Pours flux ingredients into mixing machine and starts machine. 3. Measures specific gravity of flux mixture, using hydrometer. 4. Pours flux into hydraulic …
1. Controls power hoisting equipment to pull casing, tubing, and pumping rods from oil and gas wells for repair and to lower repaired equipment, testing devices, and servicing tools into well: Attaches cable clamp to top of pump rod or casing and starts winch or hydraulic jack that raises rod …
1. Supervises and coordinates activities of WELL PULLER in cleaning and servicing producing oil and gas wells, and in pulling pumping rods, casing, and tubing from wells, for repair or replacement. 2. May oversee installation of tubing in new wells. 3. May swab wells to induce flow of oil. 4. …
1. Sets up and operates portable drilling rig to drill wells: Extends stabilizing jackscrews to support and level drill rig. 2. Moves levers to control power-driven winch that raises and extends telescoping derrick. 3. Bolts trusses to derrick and machine frame. 4. Assembles drilling tools, using handtools or power tools. …
1. Supervises and coordinates activities of workers engaged in analysis of oil well drilling mud and well cuttings during drilling operations to detect presence of oil or gas and identify productive strata: Coordinates work of WELL-LOGGING OPERATORS, MUD ANALYSIS engaged in continuous sampling and analysis of mud circulating through wells …
1. Analyzes mud and drill cuttings that are circulated through oil- or gas-well boreholes during drilling operations, using special testing equipment, to detect presence of oil or gas, and interprets findings to locate productive stratum: Attaches pump-stroke counter, mud-tank level indicator, and other measurement devices to drilling rig equipment, and …
1. Supervises and coordinates activities of workers engaged in erecting pumping systems, pumping subsurface water, and operating and maintaining pumps to provide underground and drinking water at construction sites. 2. Performs duties as described under SUPERVISOR Master Title.
1. Operates electroslag welding machine, which uses heat produced by resistance of molten flux to electrical current, to fuse metal components: Places metal components in fixture and tightens holding braces, using wrench. 2. Turns dials to start cooling water supply and to activate power sources and control cabinet. 3. Turns …
1. Operates friction-welding machine to join metal components, according to work orders, specification tables, and diagrams: Installs, aligns, and adjusts fixtures and stops, using handtools and precision measuring devices, such as micrometers, calipers, verniers, and gauges. 2. Positions parts to be welded into rotating and stationary cylinders of machine holding …
1. Sets up and operates oxy-fuel-gas-welding machine to weld metal parts, according to work order, blueprints, layout, and operating charts: Clamps workpieces into holding fixture on machine bed, movable carriage, or turntable. 2. Positions and clamps or bolts welding torch onto overhead carriage, radial arm, or into stationary fixture at …
1. Sets up and operates resistance welding machine to join metal parts, according to blueprints, work orders, or oral instructions: Turns machine dials to set air and hydraulic pressure, amperage, and joining time, according to specified type of metal, weld, and assembly. 2. May select, install, and adjust electrodes. 3. …
