Portable hot pipe bending apparatus

Details Portable hot pipe bending apparatus Portable hot pipe bending apparatus

1973-12-27

1976-03-16

Lanham, C. W.

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72455, 72380, 72457, B21D 1102

Patent

active

039437477

ABSTRACT:
The invention contemplates portable apparatus for use in hot-bending of tubular pipe, comprising a rigid triangular frame of connected legs wherein a forming-die platform is located near one corner of the frame, along with a back-up shoe support at the corner, so that pipe-support and bending may commence from said one corner, progressing in the direction of one of the adjacent sides of the frame. The bending forces are provided by a winch mounted on the same platform and utilizing block and tackle that has anchoring reference to one or both of the remaining corners of the frame. In a preferred embodiment, the frame legs which define the platform corner are truncated into halves, whereby the platform and its adjacent leg halves comprise one of two removably securable subassemblies.

REFERENCES:
patent: 2273655 (1942-02-01), Olsen
patent: 2347593 (1944-04-01), Cummings
patent: 2547870 (1951-04-01), Kelso
patent: 2771116 (1956-11-01), Ballard
patent: 2832394 (1958-04-01), Blagden
patent: 2867261 (1959-01-01), Traupmann
patent: 3246503 (1966-04-01), Williams et al.
patent: 3456468 (1969-07-01), Crippen

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