Patent ID: 11952843
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 14:
15. A tool for holding a well column pipe at the upper end of a casing pipe, said tool comprising:
(a) a plate having an upper surface, a lateral end, an oppositely lateral end, a longitudinal end, and an oppositely longitudinal end;
(b) a seam dividing the plate into longitudinal and oppositely longitudinal segments;
(c) longitudinal and oppositely longitudinal concavities respectively formed within the longitudinal and oppositely longitudinal segments;
(d) a hinge connected operatively to the plate, the hinge being positioned at a lateral end of the seam;
(e) a releasable latch connected operatively to the plate, said latch being positioned at an oppositely lateral end of the seam;
(f) a clamping block and axle combination attached to the plate's longitudinal segment, wherein said combination's clamping block comprises a pair of arms extending oppositely from the axle, wherein each arm among the pair of arms has a distal end, wherein each arm's distal end presents a plurality of teeth, wherein, upon a further extension of one of the arms toward the longitudinal concavity, the plate's upper surface resists pivoting movements of said one of the arms, and wherein, upon an alternative further extension of the other arm toward the longitudinal concavity, the arm may pivot about the axle; and
(g) means for driving the well column pipe toward the clamping block, said means being connected operatively to the plate.