Machine for straightening and stress-relieving steel rails

Details Machine for straightening and stress-relieving steel rails Machine for straightening and stress-relieving steel rails

1986-03-04

1988-02-23

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

B21D 2500

Patent

active

047262125

ABSTRACT:
A hydraulic stretching machine for straightening and stress-relieving rails, the machine being defined by stretching grips and fixing shackles being displaceable individually and independently, laterally and vertically, with respect to the longitudinal axis of the stretching machine, and grip-holding jaws which can be oriented about a longitudinal axis, the jaws including a fixed jaw and a mobile jaw articulated in and upon the fixed jaw.

REFERENCES:
patent: 2352442 (1944-06-01), Loewy et al.
patent: 2441707 (1948-05-01), Lermont
patent: 2446089 (1948-07-01), Hochreiter
patent: 2487973 (1945-11-01), Kent
patent: 2553092 (1951-05-01), Hubbert
patent: 2850071 (1958-09-01), Kraybill
patent: 2908316 (1959-10-01), Albers
patent: 3257832 (1966-06-01), Harvey
patent: 3757557 (1973-09-01), Kost
patent: 4048826 (1977-09-01), Lechner et al.
patent: 4141679 (1979-02-01), Asano et al.
patent: 4324125 (1982-04-01), Jarman et al.

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