Usx Corporation

William Boyd Sargent

George John Palyo, Iii

A method is provided for machining threads on cylindrical parts, particularly oil country tubular goods, by mounting four thread-cutting chasers in a die head of a thread cutting machine. The thread chasers are each of unique profile, which enables the cutting of threads to close tolerance and decreases metal burrs on the first and last threads cut on the part by reducing the total tool cutting forces imposed on the part and said threading machine.

Machining threaded tubular goods

A drift gauge sticker remover comprises a base, a frame mounted on the base and extending into the pass line of a powered drift gauge rod. The frame has a slot in which is mounted a pin supporting the top ends of a pivoted front plate and a back plate in a manner such that the plates can slidably move within the slot. The back plate is biased by a first spring means and a second spring means holds the front plate at an angle to the pass line in a rest position. An hydraulic cylinder/piston assembly moves the plates away from and toward a casing to be gauged. Each of the plates has an aperture in the pass line, that in the front plate is at an angle to the pass line such that, when the front plate is pivoted toward a vertical position, the edges of the aperture therein grip the drift gauge rod and apply a bending moment thereto to dislodge a stuck drift gauge.

Method of dislodging a stuck drift gage

A drift gauge rod pushing device comprises a base, a frame mounted on the base and extending into the pass line of a powered drift gauge rod. The frame has a slot in which is mounted a pin supporting the top ends of a pivoted front plate and a back plate in a manner such that the plates can slidably move within the slot. The back plate is biased by a first spring means and a second spring means holds the front plate at an angle to the pass line in a rest position. An hydraulic cylinder/piston assembly moves the plates away from and toward a casing to be gauged. Each of the plates has an aperture in the pass line, that in the front plate is at an angle to the pass line such that, when the front plate is pivoted toward a vertical position, the edges of the aperture therein grip the drift gauge rod and apply a bending moment thereto to dislodge a stuck drift gauge.

Drift gauge rod pushing device

The invention is a method and apparatus for continuously monitoring the application of a coupling to a pipe. The invention operates in several modes. In the position mode, the apparatus rotates the coupling to a desired final position. In the program mode, the apparatus determines the actual location of the hand-tight plane and continuously monitors the torque applied and the number of turns of rotation of the coupling from the hand-tight plane to the desired final position. In either of these modes, the torque applied is monitored and rotation of the coupling is discontinued if a preset maximum torque value is exceeded. If the coupling is rotated to the desired final position without reaching a minimum torque, the pipe and coupling are rejected. An image processing system is employed to locate several critical make-up parameters.

Growing community of inventors

Birmingham, AL, United States of America

William Boyd Sargent