Descriptions of Occupations: Metal Working, Building and General Construction, Railroad Transportation, Shipbuilding

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U.S. Government Printing Office, 1918 - Building trades - 123 pages
 

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Page 23 - Description: The duties of the tool designer are to design special tools, jigs, and fixtures, such as screws, machine fixtures, turret lathe fixtures, milling machine tools, boring bars, and stamping, forming, and drawing dies. Qualifications: He must be a skilled draftsman (see Mechanical draftsman ) and should have had experience as a machinist working on the types of machines for which he is to design tools. He should have good health and exceptionally good eyesight. Schooling: High-school graduate,...
Page 22 - ... familiar with the use of reference books, such as handbooks and catalogues. He should know the shop terms, such as drill, ream, tap, bore, grind, taper, face, and finish. He should know foundry- and pattern-room notations and be familiar with all drawing conventions. He should be 18 years of age or over; should have good health and exceptionally good eyesight. He should have had experience as a tracer and detailer, and preferably one to two years
Page 23 - ... developments, and know something of the principles of the strength of materials. He should be familiar with the use of reference books, such as handbooks and catalogues. He should know the shop terms, such as drill, ream, tap, bore, grind, taper, face, and finish. He should know foundry- and pattern-room notations and be familiar with all drawing conventions. He should be 18 years of age or over; should have good health and exceptionally good eyesight. He should have had experience as a tracer...
Page 59 - ... tools and some experience with woodworking machinery. He should have had broad experience as foreman carpenter on large operations, factory, or building construction, or as house carpenter, contracting carpenter or builder. Schooling : Common school ; preferably high school. PARQUETRY FLOOR LAYER: Description : The duties of the parquetry floor layer are to lay all kinds of ornamental parquetry floor designs according to layouts furnished by the architect. Qualifications: Must be able to read...
Page 17 - Must also bo able to accurately lay out templates for shell plates, heads, crown sheets, angles, braces, tubes, manholes, dome and headers, and understand boiler assembly.
Page 39 - ... tools, consisting of st'eel rule, square, hammer, center punch, scratch awl, dividers, screw drivers, inside and outside calipers, combination set, protractor, surface gauge, trammel points, depth gauge, vernier caliper, bar caliper, drill gauge, thread gauge, thread micrometer. It is desirable that he know the mathematics of pulley ratios, feed-gear ratios, back-gear ratios, taper computations, speeds and feeds, and change gears for thread cutting. This would require a knowledge of the following...
Page 122 - He must be an experienced draftsman with a thorough knowledge of the various types of ships, including the principal dimensions, lines, beam members, and structural details...
Page 65 - He must be a thoroughly experienced mechanical draftsman, with special knowledge of general design and details of marine engines, either single, compound, or triple expansion, steam turbines, boilers, pumps, condensers and feed water heaters, piping, and auxiliary apparatus. He must be familiar with the layout of foundations and supports of power and operating equipment in ships of different types.
Page 40 - ... common machine-shop tools, such as wrenches, clamps, dogs, arbors, chisels, hack saws, files, scrapers, dies and die holders, reamers, hand drills, and breast drills. He should have a working knowledge of cast iron, wrought iron, malleable iron, machinery steel, cold-rolled steel, tool steel, high-speed steel, brass, copper, Babbitt metal, and solder. He should also know stock sizes of common machine-shop materials such as washers, bolts, nuts, machine screws, cap screws, set screws, etc. He...
Page 40 - Belts ; pulleys, lubricants, to include oils, greases, and cutting compounds ; counter shafts ; line shafts ; cone and geared head machines ; motor drives ; fits and finishes ; cutting speeds ; gear combinations ; general knowledge of thread systems; standard V and square threads; special threads; double and triple threads; standard tapers ; and polishing materials, use of handbooks, reference books, and catalogues. He should know the names, care, and use of common machineshop tools, such as wrenches,...

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