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 40
the wheel will be simply a common spur-wheel, the elements of the tooth-surfaces being parallel to the axis. From the mode of generation, it is clear that the action will be confined to the plane passingthrough the axis of the screw and the common perpendicular of the two axes, represented by A Bin… … 2138.
Mechanical engineering -- Dictionaries
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