1. Controls equipment to increase strength of nitric acid, used in making TNT and nitroglycerin: Regulates flow of sulfuric acid and weak nitric acid into mixing tank and controls flow of steam, water, air, and mixed acids through dehydrating tower, absorption tower, bleaching tower, still, and condenser to produce concentrated …
1. Directs or participates in planning, designing, or reviewing plans for erection of structures requiring stress analysis: Designs structure to meet estimated load requirements, computing size, shape, strength, and type of structural members, or performs structural analysis of plans and structures prepared by private engineers. 2. May inspect existing projects …
1. Tends machines that rewind and cut rolls of material, such as cotton, nylon, and plastic into narrow rolls for use in shoe ornamentation: Mounts roll of material on spindle and tightens clamps. 2. Slides empty core on winding axle and threads end of material between pressure rollers and onto …
1. Tends machine that glues fabric strip over back edge of unbound paper products, such as legal tablets, notebooks, and ledger paper: Turns handwheel to adjust machine-head pressure plate to thickness of item being processed. 2. Places roll of gummed tape on reel and threads end through feed guide and …
1. Lubricates stripping shovel used to remove overburden at strip mine or open pit: Observes panel to determine efficiency of automatic lubrication system. 2. Heats dope in dope box and sprays lubricant onto gears and other moving parts. 3. Oils and greases shovel while in operation, using hand grease gun …
1. Operates stripping shovel to remove overburden at strip mine or open pit preparatory to extracting operations: Moves levers and depresses pedals to scoop up blast-loosened dirt and rock from top of coal, ore, or rock seam and to deposit overburden in void left by preceding strip. 2. Piles heavy …
1. Tends electrolytic stripping tank to remove excess silver solder from brazed areas of shotgun barrels: Loads barrels in rack and immerses rack in hot cleaning solution and rinsing baths, to remove grease and dirt. 2. Lowers rack into electrolytic tank filled with sodium cyanide solution, using chain hoist. 3. …
1. Verifies speed of spindles and travelers on yarn twisting and spinning frames, using stroboscope, and makes minor adjustments: Turns knob to adjust stroboscope setting to spindle speed specifications. 2. Directs stroboscope light beam onto revolving bobbin. 3. Observes bobbin and traveler to detect illusion of movement indicating variance between …
1. Tends machines equipped with guillotine knives or bandsaw, stick pusher, and deheader, that automatically strip, dehead, and cut macaroni long goods to specified length: Starts elevator to position rack of dried macaroni beside machine. 2. Pulls machine arm that lifts drying stick of macaroni from rack onto chain conveyor …
1. Tends equipment that strips photoresist film and etches layers of copper laminate from exposed surface of printed circuit board panels leaving unexposed areas to form conductive circuitry pattern: Reads process specifications and adjusts equipment controls to regulate conveyor speed, spray intensity, and solution strengths and temperatures. 2. Positions copper …
1. Strips photographic negative from film base and mounts negative on glass plate or platemaking flat to be used in preparing photoengraving plates, using art layout, blueprint, and handtools: Examines negative to detect defective areas, using lighted viewing table. 2. Spots or blocks out defective areas, using opaque and brush. …
1. Applies bias tape over seams of rubberized fabric to protect and reinforce sections of inflatable buildings: Lifts and attaches sections of buildings to circular frame, working as member of crew. 2. Turns handcrank to roll first section of building to top of frame. 3. Cleans seams with solvent, and …
1. Plans composition of film flat according to customer’s requirements, applying knowledge of film assembly; pieces together and positions negative or positive film on layout sheets; and makes composite film, using precision measuring instruments, artist’s work aids and photographic equipment, to assemble multi- or single-color film flat used in production …
1. Positions negative or positive film on layout sheets to assemble single or multiple color film flats used in production of lithographic printing plates, according to customer specifications, using precision measuring instruments and artist’s work aids: Touches up negatives to conceal pinholes and other imperfections, using artist’s brush and opaque …
1. Paints decorative stripes on manufactured articles, using spray gun and templates: Fills reservoir of spray gun with paint or enamel. 2. Positions straightedge, template, or other guide on article to be striped, and pulls trigger of gun to apply paint or enamel as gun is moved along surface. 3. …
1. Sets up and operates striping machine to ink multicolored identification stripes on insulated wire according to specifications: Installs striping wheels in inking head and fills ink reservoirs. 2. Adjusts footage counter and ink timer. 3. Clamps wire spool on payoff spindle and threads wire around capstan, through inking head, …
1. Tends machine that straightens coiled strip metal, cuts it into strips of specified length, and punches holes in strips: Hangs coiled metal on spindle between guides of machine. 2. Inserts end of metal between feed rolls of machine. 3. Starts machine that feeds strip through straightening rolls under punching …
1. Tends machine that cuts rolls of textile material into narrow rolls of specified width: Lifts roll of material onto machine bar and hammers wedge into core of roll to secure roll to bar. 2. Turns handwheel to move rotary blade into cutting position, following markings on calibrated scale to …
1. Operates machine to cut, align, and sew stripes parallel in tubular cloth: Turns screw to secure circular cutting blade in cutting position and adjusts guides according to specified cloth width. 2. Positions cloth at feed-end of machine and threads cloth through machine units onto swing-folding attachment, or joins supply …
1. Operates cylinder press to print color stripes on paper stock used for making paper bags or wrapping paper: Mounts roll of stock paper on unwind shaft, using hoist. 2. Threads paper through rollers of press and onto windup shaft. 3. Fills ink well with specified color of ink. 4. …
1. Paints stripes, letters, or decorative edges on bicycle frames, motorcycle fenders and tanks, utensils, or other stamped products, using handbrushes and enamel or lacquer. 2. Marks area to be stamped, lettered, or decorated, using rule or template. 3. Mixes paint and matches colors according to specifications, or uses prepared …
1. Feeds motorcycle and bicycle fenders in machine that paints decorative trim on fenders: Inserts and guides fenders between paint wheels of machine that paints decorative stripes on fenders. 2. Removes fenders from discharge end of machine and positions them on rack to dry. 3. Examines stripes for consistency and …
1. Tends machine to grind and polish slate products, such as flooring, mantels, and coping, to specified thickness and cut grooves in bottom surface of slate to increase adhesion to mortar bed: Selects spacers according to distance between grooves and positions saw blades and spacers on machine arbor, using wrench. …
1. Tends machine that presses and removes wrinkles from leather strips used for shoe findings: Sorts strips according to width and color. 2. Presses button that starts machine and inserts strip between pressing rollers. 3. Guides strips from rollers to distribute strips evenly in container under rollers.
