Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 226
s and other tools are so made as to tit on the bed /, which be iis adjustable by four equidistant -crew-. The pulley o is driven bj another hand on the pulley /«, andthe required pressure given by another loaded bos p. The several tools used are screwed on at m, and•in. adapti 1 for ready changing,… … without resort to machinery, it becomes necessary to provide means for suspending them so as to leavethe lower surface and two of the joints unobstructed. This is usually done by drilling a hole in theupper Burface, in which is placed an ironbolt Becured by a key. The bolt has anring, by which it…
Mechanical engineering
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