Device having power means for re-arching or de- arching a...

B - Operations – Transporting – 21 – D

Patent

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B21D 31/00 (2006.01) B21D 7/06 (2006.01) B21D 53/88 (2006.01)

Patent

CA 1194683

ABSTRACT OF THE DISCLOSURE A frame having a U-shaped member which is placed over and around a leaf spring be be re-arched while still on a vehicle; a platform pivotally mounted on the U-shaped member, a hydraulic jack supported on the platform so that the ram or piston rod on the jack may be hydraulically forced against a bending member which comprises a pair of spaced spring contact members located on opposite sides of the U-shaped member and on the opposite side of the spring therefrom. The device may be assembled over a spring and hydraulic pressure applied to drive the contact members to create a bending moment about a round surface on the inside face of the top of the U-shaped member. The pres- sure may be reversed to de-arch the spring.

441538

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