Excerpt from Machines and Tools Employed in the Working of Sheet Metals
For some years past the author has experienced a constantly recurring need of a practical treatise on this important class of machine tools, as well as of the processes used in the working of sheet metal, and has found that English writers on mechanical subjects appear to have generally neglected this branch Of engineering. It is true that in describing certain processes incidental references are made to some special form of press devised by them, yet there does not appear to be any treatise dealing with the subject in a systematic manner. American writers also have apparently neglected this subject, save as a subsidiary section Of a work dealing with other branches of mechanical engineering, and then only in books which are published at a price which is generally prohibitive to the ordinary mechanic or student, whose means are limited.
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