Tire-shrink′er.
A device for shortening tires when they have become loose from the shrinkage of the wheel.
By depressing the treadle
a, the cams
b b′ are drawn away from the blocks
c c′; the heated part of the tire is then inserted, and the treadle released, when the springs
d d′ act to throw out the cams clamping the tire between them and the blocks.
By depressing a lever, inserted in the socket
e, the two ends of the table are caused to approach each other, thus condensing the heated portion of the tire.
 |
|
Tire-Shrinker. |
 |
|
Weitman's tire-shrinker. |
Fig. 6482 has a lever, hook, and chain so arranged that tires for wheels, or other metallic bands, may be contracted in diameter while heated, without cutting and rewelding them.
In
Fig. 6483, the tire is clamped to the moving end blocks of the frame by corrugated cams, with its convex side resting upon the curved central plate.
The end blocks are then approached, to reduce the tire in length.
