Metal deforming – With means to drive tool – With means to permit tool positioning
Patent
1985-08-26
1987-04-21
Larson, Lowell A.
Metal deforming
With means to drive tool
With means to permit tool positioning
72705, B21D 112
Patent
active
046586270
ABSTRACT:
An independently locatable pull tower used in association with existing vehicle body and frame straightening apparatus where the pull towers are arranged at one end of the platform which receives the damaged vehicle. Straightening is accomplished without the necessity of removing and reversing the damaged vehicle from the apparatus. The additional pull tower is readily positioned for usage, as through wedging action by mechanism on the framework and portions of the platform which receive the damaged vehicle.
Body and frame straightening is accomplished through a pull chain which connects the damaged vehicle and is downwardly displaced by horizontal movement of a powered cylinder. The aforesaid downward displacement is achieved by a receiving member through which the pull chain extends and includes a constricted portion for successive pull chain engagement.
The arrangement also permits vertical adjustment, i.e. the selective positioning of a pull chain receiving collar on the pull tower in accordance with damaged vehicle straightening demands.
REFERENCES:
patent: 3029859 (1962-04-01), Grant
patent: 3566666 (1971-03-01), Berendt et al.
patent: 3691817 (1972-09-01), Friend et al.
patent: 3835693 (1974-09-01), Majersky
patent: 3888100 (1975-06-01), Chisum
patent: 3999419 (1976-12-01), Larson et al.
patent: 4151737 (1979-05-01), Specktor
patent: 4530232 (1985-07-01), Smith
patent: 4546638 (1985-10-01), Field
patent: 4592225 (1986-06-01), Eck
Larson Lowell A.
Miller Jr. Maurice L.
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