Motor-driven portable tongs for clamping cramps or the like

Details Motor-driven portable tongs for clamping cramps or the like Motor-driven portable tongs for clamping cramps or the like

1988-08-18

1990-01-02

Crane, Daniel C.

Metal deforming

By tool-couple embodying nonplanar tool-face

Similar tool-faces

72407, 7245316, 2924356, B21F 4516, B23P 1100

Patent

active

048904740

ABSTRACT:
The seats, into which the "C" clips are inserted before being clamped, are located in parts of the free end-sections of the jaws situated above the support-plate extending beyond the other surface of the plate. Located under the latter is the thrust-plate for transferring the clips from the magazine to the seats. As a result of this arrangement, the thrust-plate may be located in the position of maximal advance towards the seats and its front edge acts as a stop to prevent withdrawal of the back of the clip when the latter is clamped between the parts of the free end-sections of the jaws. Movement of the jaws and displacement of the thrust-plate may be caused by alternate movement of rods from double-acting hydraulic-jack rods, or racks which engage pinions mounted rotatably but axially immovably upon the shaft and are released therefrom by means of a clutch controlled by an electromagnetic element.

REFERENCES:
patent: 2174152 (1939-09-01), Curtiss
patent: 2256382 (1941-09-01), Dole
patent: 3015824 (1962-01-01), Richardson
patent: 3066304 (1962-12-01), Wantland
patent: 3068485 (1962-12-01), Lingle
patent: 3287955 (1966-11-01), Winglow et al.
patent: 3628230 (1971-12-01), Grise
patent: 3830089 (1974-08-01), Boyd et al.

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