Methods of machine shop work : for apprentices and students in technical and trade schools (1914)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York : McGraw-Hill · leaf 115
any de-parture from parallelism of the two arbors. In Fig. 78 the squareness of the piston with the crank-pin holeis similarly tested after the parts have been assembled. Thecrank-pin bearing is clamped upon the pin a and the slide atthe right is adjusted until the swiveled lever h makes… … Figs. 79 and 80, from the Cincinnati Milling Machine Co.,show an application of the multiplying-leverprinciple to the determination of the accuracyof the spacing of the teeth of the worm wheelof a milling machine dividing head. Themultiplying lever is forked at its lower end,as shown more clearly…
Machine-shop practice
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