Job Description: 1) Controls rotary or spray sulfur furnaces and alkali absorption towers to make cooking acid for use in digesting woodpulp: Moves controls and observes gauges to regulate combustion chamber, speed of furnace rotation, and volume of liquid sulfur in furnace to maintain specified temperature and acidity required to produce sulfur dioxide gas. 2)
Job Description: 1) Fills storage battery cells with sulfuric acid solutions of specified concentration preparatory to forming and charging: Arranges batteries in groups on tables or trucks according to specified acid concentration. 2) Holds spouts of hoses on gravity flow or siphon-type fillers over battery vents. 3) Adjusts valves manually or pushes pedal to control
Job Description: 1) Controls equipment, such as washers, rectifiers, acid pots, and mixing tanks arranged in series to recover tar acids from coal-tar oils: Starts pumps to circulate oil through equipment, and opens valves at various stages to treat oil with chemicals, carbon dioxide, and steam, according to specified instrument readings. 2) Performs routine tests
Job Description: 1) Starts conveyors and pushes incoming storage batteries onto conveyor leading to machine which inverts batteries over receiving tank to drain used forming acid or manually unloads batteries from forming trucks, inverts batteries, and places batteries on rack to drain. 2) Places drained batteries on conveyor leading to refilling station or on truck.
Job Description: 1) Adjusts specific gravity of electrolyte in battery cells or in plate-forming tanks to concentration specified: Ascertains temperature and specific gravity of solutions, using thermometer and hydrometer. 2) Turns valves or lever to drain acid or water into cells or tanks to adjust specific gravity of solutions. 3) Connects batteries to charging line
Job Description: 1) Tends generating equipment that processes calcium-carbide crystals and water into acetylene gas: Turns valves, level gauge, and thermostat to raise and heat water to prescribed level and temperature in generator. 2) Dumps specified quantity of calcium-carbide crystals into hopper, bolts in cover, and starts generator. 3) Opens hopper gate and starts vibrator
ACETYLENE-PLANT OPERATOR Read More »
Job Description: 1) Tends mixing machine, autoclave, and drier to mix, pack, solidify, and dry asbestos, dirt, charcoal, lime, water, and other ingredients to form absorbent packing for compressed acetylene gas: Meters out water and powdered ingredients, and dumps them into mixer. 2) Starts agitator to mix ingredients for specified period of time. 3) Opens
ACETYLENE-CYLINDER-PACKING MIXER Read More »
Job Description: 1) Tends equipment to recover acetone, used in acetate rayon manufacture, from vapor produced by dry spinning of rayon filaments: Turns valves to admit vaporized acetone from spinning units to recovery system and to maintain cooling coils in condenser at specified temperature for efficient acetone recovery. 2) May pump recovered acetone to storage
ACETONE-RECOVERY WORKER Read More »
Job Description: 1) Brushes or drops acetone cement on backs of buttons to attach metal shanks of buttons and presses shank into softened plastic. 2) . 3) .
ACETONE-BUTTON PASTER Read More »
Job Description: 1) Sets up and operates machine to coat cloth, fiber, or paper with granules of abrasive material: Positions machine guides and stops on machine bed according to size of base material, using rule or template. 2) Turns screws to adjust valve openings to regulate thickness of abrasive coating sprinkled on base material. 3)
ABRASIVE-COATING-MACHINE OPERATOR Read More »