Drive jaws for an underground pipe installer device

Details Drive jaws for an underground pipe installer device Drive jaws for an underground pipe installer device

E - Fixed Constructions

03

F

254/110, 61/5.1

E03F 3/06 (2006.01) E21B 19/00 (2006.01) E21B 19/24 (2006.01)

Patent

CA 1150521

W-2322 C IN THE PATENT OFFICE OF CANADA APPLICATION OF WILLIAM O. SCHOSEK RELATING TO LEVELING MEANS FOR AN UNDERGROUND PIPE INSTALLER DEVICE ABSTRACT OF THE DISCLOSURE A leveling structure incorporated in an underground pipe installer device comprised of a jack positioned relative to a first end portion of the pipe installer device to selectively raise or lower the first end a desired amount about a pivot, located adjacent to a second end of the device, A first, vertically movable portion of the jack is fixed relative to a main longitudinally extending main frame which carries drive jaws operated by a suitable fluid operated cylinder and piston assembly uti- lized to drive a rod through the ground to form a hole into which a pipe or the like is withdrawn into an installed position. A second portion of the jack is pivoted to a rear end portion of a base structure which is in turns pivotally attached at its forward end relative to a forward end portion of the main frame; and a vertically extending screw rod is threaded through a nut carried in the upper end of the first jack por- tion with a lower end portion, rotatably captivated to a top end of the second jack portion. This application is being filed under the International Convention and is based on United States Patent Application, Serial Number 68,153 filed in the United States on August 20, 1979.

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