Portable tool for bending roof bolts for insertion in mine roof

Details Portable tool for bending roof bolts for insertion in mine roof Portable tool for bending roof bolts for insertion in mine roof

1988-06-14

1989-10-31

Jones, David

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72387, 7245315, 7245316, B21D 907

Patent

active

048768774

ABSTRACT:
A portable tool for bending elongated mine roof bolts in situ including a stationary support portion for holding a part of a roof bolt, a movable support portion for holding another part of the roof bolt, a power cylinder and piston for moving the movable support portion in an arc to effect bending one end of the bolt, to permit insertion thereof into a mine roof opening. The power cylinder and piston being activated to return the movable support portion to its initial position, thereby straightening the bolt to permit full insertion of the bolt into the mine roof opening.

REFERENCES:
patent: 3613430 (1969-07-01), Crees
patent: 3786668 (1974-01-01), Crees
patent: 4537052 (1985-08-01), Adleman

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