The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[2082]. Mill for chopping or grinding, in which the two rollers are driven at different peripheral speeds.

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Section 28.—CHUCKS, GRIPS AND HOLDERS.

(See also [p. 68].)

[2083]. Sockets for various tools, &c. Sections: these are made either with parallel or taper holes. With parallel holes a set screw or key is used to secure the tool in the socket. See [Sec. 37].

[2084]. Screw chuck for wood turning.

[2085]. Fork chuck for wood turning.

[2086]. Screwed cup chuck for wood turning.

[2087]. Cup chuck, with taper feathers, for wood.