The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 131
126 THE MACHINIST AND TOOL MAKERS INSTRUCTOR. … THE MACHINIST AND TOOL MAKERS INSTRUCTOR. 12? the internal wheel the teeth are thicker at the root than inthe rack, this being due to the curve of the wheel. An internal wheel can be drawn in the same manner asany other gear, the difference being that the teeth as drawnbecomes the space and the…
Machinery
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