Chapter CXVIII: Section 37: FASTENING WHEELS, &c., TO SHAFTS

(_See also p. 86._)

=2159. Crank arm= or lever arm, secured to shaft by a clip boss and bolt.

=2160. Ditto,= secured by a screwed shank passed through the shaft and drawn up by a nut.

=2161. Piston and rod fastening.=

=2162. Ditto, ditto.=

=2163. Thomas’ patent wedge bush= for securing plain bored pulleys, &c., to shafts.

=2164. Taper screwed bush= fastening for a wheel, with frictional grip. The bush is split on one side only.

=2165. Taper split bush fixing,= with frictional grip. The bush is split into three parts.

=2166. Set-screw fixing= for a lever or arm.

=2167. Split boss or collar,= with two forms of sunk screws for fixing and tightening.

=Split wheels and pulleys= are now commonly used as the best means of
fastening to shafts. See No. 1711.

=2168. Cone sleeve= (split) and nut fastening for a wheel or pulley.

=2169. Serrated wedges.=