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

[2153]. Expanding collars or sleeves, screwed one upon another.

[2154]. Expanding collet, split in three or more parts.

[2155]. Expanding pipe grip or collar with bevel gear and right and left-hand screws to operate the three segments together.

[2156]. Expanding pipe stopper with rubber ring. See [Section 29].

Bellows and rubber bags are used as expanding devices for gases, &c.

Rubber balloons are expanded by air blown in under pressure.

[2157]. Expanding pulley or wheel.

Expanding plug. See [No. 2358].

[2158]. Expanding lever.

The mercury bulb tube is an expanding device actuated by temperature.