Portable guardrail straightener for field use

Details Portable guardrail straightener for field use Portable guardrail straightener for field use

1977-01-19

1977-11-01

Lanham, C.W.

Metal deforming

By tool-couple embodying nonplanar tool-face

With complementary tool-faces

72475, B21D 1302, B21D 3714

Patent

active

040559815

ABSTRACT:
A portable guardrail straightener for field use whereby damaged guardrails along highways may be straightened without the necessity of removing and retrieving the guardrails to a shop site for repair, the portable guardrail straightener for field use comprising a mechanism to be mounted on a vehicle whereby the mechanism is transported from one field location to another, the mechanism further comprising a guardrail straightening jig comprising two matching dies the configuration of which conforms to the cross section of an undamaged guardrail, one die being mounted to a reciprocable carriage driven by a two-way cylinder between open and closed positions and the other die being mounted to a fixed frame such that once the dies are located horizontally juxtaposed a damaged section of guardrail and closed, the damaged guardrail will be cold deformed into substantially its initial longitudinal and cross-sectional configuration.

REFERENCES:
patent: 566827 (1896-09-01), Wardwell
patent: 2788831 (1957-04-01), Weiner
patent: 2822854 (1958-02-01), Berg
patent: 3779295 (1973-12-01), Balsbaugh

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