American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 596
ter. Blocks, Differential — Hoisting apparatus consisting of differential gears for lifting heavy loads.Blocks, Tackle — Sheaves or pulleys mounted in a shell or case, used with hoisting ropes or chains to raise heavy weights. ____^ Blow Pipe — A pipe for blowing a jet of air rinto a flame for… … BOLTS Agricultural Bolt. Agricultural bolts, as indicated by the name, are B^^^^^^^^^^^ r^ used In farm machines and appliances.^^^^^^S|||_J The body of the bolt has a series of hel-^^^^^^^^^^^^^^^^|_J ical lands and grooves which are formedby a rolling process. A. L. A. M. Bolt — This bolt is…
Machine-shop practice
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