# US 5,619,893 A · Tube squaring machine

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- Number: US 5,619,893 A
- Document ID: US5619893A
- Status: Granted
- Kind: A
- Application number: 08/513,217
- Filed: 1995-08-10
- Granted: 1997-04-15
- Earliest claimed: 1995-08-10
- Assignees: The E. H. Wachs Company
- Inventors: Kenneth R. Pierce
- Web page: https://patentgrep.com/patent/US5619893A

## CPC

- B23B 5/163: {with an external clamping device}
- Y10T 82/205: having swinging feed nut and tool bar
- Y10T 82/22: Portable lathe for pipe turning
- Y10T 82/2512: having facing tool fed transverse to work
- Y10T 408/5628: Tool having screw-thread engaging frame to cause infeed
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A squaring machine has an elongate generally cylindrical housing with an axially mounted motor at one end of the housing which rotates a shaft extending through the axis of the housing. The shaft is longitudinally moveable within the housing, and a non-rotatable inner sleeve is fitted around the shaft and is fixed for longitudinal movement with the shaft. The housing has a feed ring which is axially slidable but non-rotatably fixed around the tubular section, and a pin extends through a slot in the housing and the pin is connected to both the feed ring and the inner sleeve such that the feed ring, the inner sleeve, and the shaft move longitudinally in unison with respect to the housing. Rotation of a feed nut, which threadably engages the feed ring, causes axial movement of the feed ring along the tubular portion of the housing, and simultaneous axial movement of the shaft.

## Claims

### Claim 1

A tube squaring machine comprising in combination,
a housing having a first end, a second end, and a tubular section between said first and second ends,
a rotatable shaft within said housing, said shaft axially moveable relative to said housing,
a sleeve non rotatably fitted around said shaft,
means for retaining said sleeve for axial movement with said shaft,
a feed ring non rotatably fitted around said housing, said feed ring axially slideable along said housing,
said feed ring having a cylindrical surface with threads thereon,
a feed nut having a cylindrical surface with threads thereon from mating against said threads of said feed ring,
means for locking said feed nut against axial movement along said housing,
said housing having a longitudinal slot therein,
linkage means extending through said slot in said housing for axially moving said sleeve in unison with axial movement of said feed ring,
means for retaining a work piece at said first end of said housing,
means for attaching a first end of said shaft to an axially aligned rotating member, and
means for attaching a tool to a second end of said shaft.

### Claim 2 (depends on 1)

A machine in accordance with claim 1 further comprising,
connecting means for connecting said shaft to a shaft of a motor.

### Claim 3 (depends on 1)

A machine in accordance with claim 1 further comprising indexing means on said housing and said feed nut for indexing rotational movement of said feed nut with axial movement of said shaft.

### Claim 4 (depends on 1)

A tube squaring machine in accordance with claim 1 wherein said means for retaining is positioned to retain a workpiece coaxially with an axis of said shaft.

### Claim 5 (depends on 4)

A machine in accordance with claim 4 further comprising indexing means on said housing and said feed nut for indexing rotational movement of said feed nut with axial movement of said shaft.

### Claim 6 (depends on 5)

A machine in accordance with claim 5 and further comprising means for attaching a second end of said shaft to a rotating member.

### Claim 7

A tube squaring machine comprising in combination,
a housing having a first end, a second end, and a tubular section between said first and second ends,
a rotatable shaft within said housing, said shaft axially moveable relative to said housing,
a sleeve non rotatably fitted around said shaft,
means for retaining said sleeve for axial movement with said shaft,
a feed ring non rotatably fitted around said housing, said feed ring axially slideable along said housing,
said feed ring having a cylindrical surface with threads thereon,
a feed nut having a cylindrical surface with threads thereon from mating against said threads of said feed ring,
means for locking said feed nut against axial movement along said housing,
said housing having an aperture therein,
linkage means extending through said aperture in said housing for axially moving said sleeve in unison with axial movement of said feed ring,
means for retaining a work piece at said first end of said housing,
means for attaching a first end of said shaft to an axially aligned rotating member, and
means for attaching a tool to a second end of said shaft.