Power driven casing splitter apparatus
AssigneeNorthern Illinois Gas Company
InventorsRobert E. Barrett, Herman A. Voss
Life of this patent
Estimating the term…
Abstract
A carriage having rotary cutter wheels is mounting for reciprocation on a frame adapted to be rigidly secured to a pipe casing which is desired to be split along a line parallel to its axis. A hydraulic motor is mounted to the frame at one end of the carriage. A rotary crank driven by the motor is coupled to an arm which is also coupled to drive the carriage in a reciprocating motion. An adjustable hydraulic valve controls the speed of the motor, and thus the speed of the cutter. An adjustable stabilizer is mounted to the frame to stabilize the cutter by bracing against the carrier pipe within the casing.
Claims4
Apparatus for splitting the casing of a carrier pipe comprising:
- a frame;
- a plurality of adjustable chain clamps on said frame for securing said frame to said casing;
- a carriage having rotary cutting means;
- said carriage movably mounted to said frame for linear reciprocating motion axially of said pipe when said frame is assembled to said casing;
- a motor mounted to said frame and having a rotating drive shaft;
- drive means coupled to said drive shaft and including an arm connected to said carriage for converting the rotary motion of said motor to said linear reciprocating motion of said carriage;
- adjustable means for controlling the speed of said motor, whereby when said frame is secured to said casing by said chain clamps and said motor is energized, said carriage is reciprocated axially of said casing and said rotary cutting means splits said casing;
- and
- a stabilizer assembly mounted to said frame and adapted to engage said pipe at a location where the casing has been removed from said pipe, said stabilizer assembly comprising at least one pad for engaging said pipe, means for mounting said pad, and an adjustable screw means for moving said mounting means toward said pipe and forcing said pad into engagement with said pipe.
Dependencies are inferred from the claim text.