Implements or apparatus for applying pushing or pulling force – Resilient tire-casing spreaders
Patent
1978-10-10
1980-02-12
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Resilient tire-casing spreaders
254104, 269234, 269321S, B25B 108
Patent
active
041880170
ABSTRACT:
A pair of L-shaped claws consisting of longitudinal and cross members are substantially congruent, rigidly connected and spaced a short distance from each other. Two aligned elongated openings are provided in the center of each cross member, for receiving a vertically-oriented tensioning wedge. A third claw, substantially congruent with the first two claws is guided with its cross members longitudinally in the space between the first pair, with little play in the transverse directions. This third claw also has an elongated opening in its cross member for receiving the tensioning wedge. The cross sides of the first mentioned elongated openings which contact the tensioning wedge on one side is opposite to the cross side of the last mentioned elongated opening, which contacts the tensioning wedge on its opposite side. A contact surface for the frame piece is provided on the side of the cross members of claw pair, directed toward the outer leg of the frame piece. The longitudinal members of the claws have oblique surfaces directed towards one another which correspond in obliquity to the angle of the outer flank of the frame piece longitudinal bead, so that when the frame piece outer legs rest against the contact surfaces of the cross members on the wedge is driven, the inwardly projecting oblique surfaces rest under pressure against the outer flank of the longitudinal bead.
REFERENCES:
patent: 1879099 (1932-09-01), Coffey
patent: 2217278 (1940-10-01), Kanter
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