Synopses & Reviews
Synopsis
Excerpt from Cams: Elementary and Advanced
The first five sections of this book were published about three years ago under the title of Elementary Cams. The chief features of this earlier book were that it pointed out a classification, an arrange ment, and a general method of solution of the well-known cams in such manner as has been generally developed in other specialized branches in technical engineering work; and also it gave a series of cam factors for base curves in common use, which enabled designers to compute proper cam sizes for specific running conditions, offering numerous examples in the use of these factors in the several kinds of cam problems. The factors, with the exception of the one for the 30 pressure angle for the Crank Curve were new, so far as the author is aware. The Elementary Cams will continue to be sold as a separate volume.
A further development of the subject is given in the present work which is under the title of Cams. The chief original features of this advanced work include the development or use, or both, of the logarithmic, cube, circular, tangential and involute base curves, the establishing of cam factors for such of these curves as have general factors, and the demonstration that the logarithmic base curve gives the smallest possible cam for given data.
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