Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 727
the lines in Fig. 3728. The advantages claimed are that these,with their opposite cutting faces cutting in line, are equivalent to the front cut both ways of a hand-saw, in distinction to the two back cuts of the V-saw. Hence increased speed is gained. All theteeth, moreover, being of even length,… … large curvilinear hollows, in the formation of which thefaces <>f the teeth also become hollowed so as to makethe projectii.g angles acute. The gullets, 3, 7, are firstfiled; and from the till crossing the tooth very obliquely,as at vv in the section, the point of the tooth extendsaround the…
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