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 69
ny methods of producing precision index plates have beenused and. of these, it is only possible to show here two whichare selected in order to indicate the leading methods of at-tack, of which other plans are, to a large extent, variations. THE STEP-BY-STEP METHOD OF ORIGINATING INDEX PLATES Fig.… … Fig. 41.—First method of originating index plates. The wheel a to be divided, which must be of iron, has belowit and in light rubbing contact with it, an electro magnet bfitted with a switch c by which it may be energized and de-energized. Swinging about the center of the wheel is an armd carrying…
Machine-shop practice
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
