Handling: hand and hoist-line implements – Grapple – Pivoted jaws
Patent
1979-10-29
1981-11-03
Marbert, James B.
Handling: hand and hoist-line implements
Grapple
Pivoted jaws
294110R, B66C 128
Patent
active
042982251
ABSTRACT:
Rail handling apparatus for automatically seizing, gripping, raising, carrying, lowering and releasing a rail comprising angularly pivotable vertically elongated tong arms connected near their lower ends by a pivot pin and each having means forming a support aperture in its lower end, a toggle link or shackle linking each support structure with an overlying crane ring supported by a crane, and slim tapered tong jaws protruding downward from the lower ends of the tong arms beneath the pivot pin, having converging outer jaw surfaces and inner jaw tip surfaces diverging at an acute angle surmounted by upwardly facing rail-supporting surfaces positioned to embrace and support the ball of a rail flanked by the tong jaws in crane-suspended rail-carrying position. The tong jaws are preferably removable and interchangeably bolted to the lower ends of the tong arms. The narrow tapered jaws may be provided with rotatable rollers facing each other to provide the rail-supporting surfaces, permitting self-hooking and continuous threading of continuous welded rail as the crane advances along the roadbed.
REFERENCES:
patent: 1128297 (1915-02-01), Adler
patent: 1814107 (1931-07-01), Zavatkay
patent: 3208789 (1965-09-01), Barry
Marbert James B.
Safetran Systems Corporation
LandOfFree
Rail handling tongs does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rail handling tongs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rail handling tongs will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1061539