Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 294
I = (60 to 72) in. l^ (3 to 6) in. 6 (min.) = degrees. This machine can be used for all kinds of light press workwhere but a small movement of the ram is needed. Where thismovement is desired as great as possible, increase V and decreaseI, also reduce the length of the toggle members. The ram may… … X Fig. 128.Small Hand-power Punch Fig. 128 shows a small bench tool, used for punching sheetiron and other thin metals. Because of its simplicity only twoparts of the assignment will be given. All other necessaryassumptions may be made by the designer and a complete setof calculations and drawings…
Machine design
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