An apparatus for correcting an aberration in a bullet casing's neck, the apparatus incorporating a support frame; a collet chuck and collet sleeve combination whose collet chuck presents a circumferential array of jaws having longitudinal ends, wherein the collet chuck further has a throat extending longitudinally from the jaws' longitudinal ends; a bullet ogive centering annular land fixedly attached to or formed wholly with the collet chuck, the bullet ogive centering annular land being positioned at an oppositely longitudinal end of the throat; rotatable mounting conical bearings and bushings which attach the collet chuck and collet sleeve combination to the support frame; and a turn wheel connected operatively to the collet chuck and collet sleeve combination.

A method of manufacturing a torsion bar is provided. The method includes cutting a stock torsion bar material to a desired torsion bar length to form the torsion bar. The method also includes forming a first end portion by removing material from the torsion bar to form a first annular groove extending circumferentially about the torsion bar. The method further includes forming a second end portion by removing material from the torsion bar to form a second annular groove extending circumferentially about the torsion bar.

A method of manufacturing a torsion bar is provided. The method includes cutting a stock torsion bar material to a desired torsion bar length to form the torsion bar. The method also includes forming a first end portion by removing material from the torsion bar to form a first annular groove extending circumferentially about the torsion bar. The method further includes forming a second end portion by removing material from the torsion bar to form a second annular groove extending circumferentially about the torsion bar.

Portable lathes, portable lathe assembly kits, and associated methods. A portable lathe comprises two frame members, a plurality of guide bars, a tool assembly supported by the guide bars, and a feed assembly for translating the tool assembly along the guide bars. The feed assembly includes a first fixed linear feed element, a second fixed linear feed element, a driving rotary feed element, and a driven rotary feed element, and is configured such that rotating the driving rotary feed element translates the tool assembly along the guide bars. A portable lathe assembly kit comprises components of the portable lathe configured to be assembled together to install the portable lathe on a cylindrical workpiece. In some examples, a method of utilizing the portable lathe assembly kit comprises operatively receiving the cylindrical workpiece within the frame members by securing the cylindrical workpiece to a first lathe clamshell subassembly and operatively coupling a second lathe clamshell subassembly to the first lathe clamshell subassembly.

Portable lathes, portable lathe assembly kits, and associated methods. A portable lathe comprises two frame members, a plurality of guide bars, a tool assembly supported by the guide bars, and a feed assembly for translating the tool assembly along the guide bars. The feed assembly includes a first fixed linear feed element, a second fixed linear feed element, a driving rotary feed element, and a driven rotary feed element, and is configured such that rotating the driving rotary feed element translates the tool assembly along the guide bars. A portable lathe assembly kit comprises components of the portable lathe configured to be assembled together to install the portable lathe on a cylindrical workpiece. In some examples, a method of utilizing the portable lathe assembly kit comprises operatively receiving the cylindrical workpiece within the frame members by securing the cylindrical workpiece to a first lathe clamshell subassembly and operatively coupling a second lathe clamshell subassembly to the first lathe clamshell subassembly.

The present invention refers to a machine for cutting the external coating and methods for removing the Coated Pipe Preservation System for Onshore and Subsea Pipelines, called, for short, PPS System or PPS, represented in FIGS. 1 (1.1), (1.2), (1.3), and (1.4). This Machine, called the PPS Stationary Cutting Machine, represented in FIGS. 7 and 8, in addition to performing the cut at the correct angle (), represented in FIG. 2 (2.4), makes the FBE Exposure Band (FBE Tail), represented in FIG. 2 (2.3), in order to ensure that the Collar (Cutback), represented in FIG. 2 (2.2), meets the specifications regarding dimensions (C) and (T), represented in FIGS. 2 (2.6) and (2.7), and the finishing at the interface with the Pipe External Coating, being applicable to straight pipes that rotate during the cutting of the external coating. The PPS Automated Drawing Device, represented in FIGS. 9 and 10, used together with the PPS Stationary Cutting Machine, is intended to draw and/or reposition the PPS System in an automated manner through the Cover (1.3, 8.3, and 9.5), increasing productivity and operational safety.

Together with the PPS Automated Drawing Device, the assembly is installed in the PPS Cutting and Drawing Stations, represented in FIGS. 11 to 14, to be implanted in Onshore Bases (Spoolbases) (11), Type J (J Lay) (12) Launch Vessels, and Type S (S Lay) Launch Vessels (13), for the Construction and Installation of Subsea Pipelines (Subsea or Submerged Pipelines), and at the Pipe Sites (14), for Onshore Pipelines (Buried Pipelines).

The present invention refers to a machine for cutting the external coating and methods for removing the Coated Pipe Preservation System for Onshore and Subsea Pipelines, called, for short, PPS System or PPS, represented in FIGS. 1 (1.1), (1.2), (1.3), and (1.4). This Machine, called the PPS Stationary Cutting Machine, represented in FIGS. 7 and 8, in addition to performing the cut at the correct angle (), represented in FIG. 2 (2.4), makes the FBE Exposure Band (FBE Tail), represented in FIG. 2 (2.3), in order to ensure that the Collar (Cutback), represented in FIG. 2 (2.2), meets the specifications regarding dimensions (C) and (T), represented in FIGS. 2 (2.6) and (2.7), and the finishing at the interface with the Pipe External Coating, being applicable to straight pipes that rotate during the cutting of the external coating. The PPS Automated Drawing Device, represented in FIGS. 9 and 10, used together with the PPS Stationary Cutting Machine, is intended to draw and/or reposition the PPS System in an automated manner through the Cover (1.3, 8.3, and 9.5), increasing productivity and operational safety.

Together with the PPS Automated Drawing Device, the assembly is installed in the PPS Cutting and Drawing Stations, represented in FIGS. 11 to 14, to be implanted in Onshore Bases (Spoolbases) (11), Type J (J Lay) (12) Launch Vessels, and Type S (S Lay) Launch Vessels (13), for the Construction and Installation of Subsea Pipelines (Subsea or Submerged Pipelines), and at the Pipe Sites (14), for Onshore Pipelines (Buried Pipelines).

A curtain assembly comprises a rotatable drive element wherein at least one helical guide structure is formed on, or into, the outer surface of the drive element. A drive attachment element having a structure that communicates with the helical guide structure to move the drive attachment element axially along the drive element when the drive element is rotated. Specific embodiments incorporate either a manual or motor-driven rotation assembly for rotating the drive element. Further specific embodiments involve a helical guide structure that comprises a helical groove and a structure that comprises a tooth that engages with the helical groove.

A curtain assembly comprises a rotatable drive element wherein at least one helical guide structure is formed on, or into, the outer surface of the drive element. A drive attachment element having a structure that communicates with the helical guide structure to move the drive attachment element axially along the drive element when the drive element is rotated. Specific embodiments incorporate either a manual or motor-driven rotation assembly for rotating the drive element. Further specific embodiments involve a helical guide structure that comprises a helical groove and a structure that comprises a tooth that engages with the helical groove.

Pipe machining apparatuses and methods of operating are provided. In one aspect, a pipe machining apparatus includes an advancement mechanism coupled to a frame and adapted to move relative to the frame between a first position, in which the advancement mechanism is in a travel path of an advancement member and is adapted to be engaged by the advancement member to advance a tool, and a second position, in which the advancement mechanism is positioned out of the travel path of the advancement member and is not adapted to be engaged by the advancement member. In another aspect, a pipe machining apparatus includes multiple motors and pinion gears engaged with a gear rack of a tool carrier. In a further aspect, a pipe machining apparatus includes a race wiper. In yet another aspect, a pipe machining apparatus includes a race lubrication member.