Section 12.—CARRIAGES AND CARS.
(See also [p. 32].)
[1987]. Swivelling gear for car wheels.
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Section 13.—CRUSHING, GRINDING & DISINTEGRATING.
(See also [p. 36].)
[1988]. Eccentric disc grinding mill. The discs have grooved faces, annular, radial or spiral.
[1989]. Grinding face tool, with segments of stone or emery.
[1990]. Huntingdon’s stamp mill.
Surface grinding, filing and polishing; are performed by means of emery, files, glass and emery paper and cloth, revolving stones and emery wheels, brushes, endless bands fed with emery and other powders, &c.
[1990A]. Ball mill for grinding various substances.