Expanding mandrel and a machine for the use of said mandrel

Details Expanding mandrel and a machine for the use of said mandrel Expanding mandrel and a machine for the use of said mandrel

1978-04-19

1980-01-22

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Resilient tire-casing spreaders

Spreader and tire casing relatively movable or rotatably...

242 72R, 269 481, 279 2R, B60C 2514

Patent

active

041846648

ABSTRACT:
The mandrel has a cylindrical body provided at the periphery with a plurality of jaws which are capable of radial displacement under the action of control means. Each jaw is supported by two radial columns which are capable of translational motion and each placed at one end of the jaw. Both support columns are driven by means of two first crank-arms rigidly fixed to two toothed wheels which are disposed in meshing engagement with each other, one toothed wheel being coupled with a second crank-arm. An actuating rod is mounted in the axis of the mandrel body and capable of translational motion along the axis, the rod being intended to actuate all the second crank-arms which correspond to the plurality of jaws.

REFERENCES:
patent: 2541659 (1951-02-01), McGovern
patent: 2986443 (1961-05-01), Leutert
patent: 3386726 (1968-06-01), Lorenz
patent: 3583674 (1971-06-01), Hall

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