Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 960
The knives are represented in the drawings as being straight; but where the gutta percha to be cuthappens to be of a more than usually hard or intractable quality, it is advantageous to substitute knivesof a curved or reaping-hook form, on account of their more gradual mode of action. Fig. 2239 is…
Mechanical engineering · Mechanics · Engineering
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