Amca International Corporation

Earl H Sigman

Timothy E Abblett

A tong 200 for use in lifting articles such as aluminum or steel ingots and the like comprising an elongated leg member 210, a pivot member 212 fixedly attached to and depending from leg 210, said pivot member having an upper portion and a lower portion 220, an upper link 214 pivotally attached to and projecting outwardly of said upper portion of said pivot member, a lower link 218 pivotally attached to and projecting outwardly of said lower portion of said pivot member, a tong bit 224 having an upper portion 225 disposed outwardly of said pivot member and a lower portion 261, said upper portion of said tong bit being pivotally attached to upper link 214, said lower portion of said tong bit being pivotally attached to lower link 218, said lower portion of said tong bit extending under said pivot member and having an innermost end 246 projecting inwardly of said pivot member, and means 230 for resiliently restraining said tong bit against pivot member 212. A grab assembly 16 and a crane 10 for employing said tong are also disclosed.

Positive grip lifting mechanism

An improvement in and pertaining to cranes for stripping and/or handling cast metal ingots. The improvement is disclosed in the illustrative environment of a crane capable of performing both functions and operations with big-end-down ingots and molds. The improvement is embodied in a horizontally disposed component of a vertical, crane-suspended, ingot working mechanism. Said component serves as a shock absorber and dampener during a stripping operation, and serves as a resilient energy reservoir in aid of an ingot handling operation. Said component takes a horizontal drum-shaped form with centrally apertured, resilient, spring tempered steel discs disposed like the heads of a drum normal to said mechanism wherein, however, the inner peripheries of said apertures engage parts of the mechanism between which there is relative vertical motion in one direction incident to stripping the ingot from the mold, and in the opposite direction when gripping the ingot to handle it. The inner peripheries of the apertures in each disc always engage externally and separately, with freedom for the discs to flex, relatively movable coaxial vertical tubular elements of the mechanism which sustain and/or transmit the essential forces and motions to effect the respective ingot stripping and handling operations.

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Alliance, OH, United States of America

Earl H Sigman