(See also [p. 32].)

[1987]. Swivelling gear for car wheels.

[Larger plate.]

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.