Benjamin, Charles H[enry], 1856- [from old catalog] · New York, H. Holt and company · leaf 329
Thickness of plate to be sheared (:^ to 1) in. Depth of throat (6 to 18) in. Strokes of the ram per minute (15 to 20) The frame sections may be calculated, if desired, to a regularoutline as shown in the dotted lines, after which modifications inthis outline may be made by approximation. A better… … =^(_ Fig. 150. Horizontal Power Punch (Niles Tool Works Co. 1900 Catalog) 157. Assignment.—■ Kind of material to be punched • Size of largest hole punched in. Thickness of the plate in. Distance of center of hole from edge of plate in. Number of holes punched per minute Horizontal punching machines…
Machine design
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