# US 4,399,721 A · Wrench

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- Number: US 4,399,721 A
- Document ID: US4399721A
- Status: Granted
- Kind: A
- Application number: 06/296,836
- Filed: 1981-08-27
- Granted: 1983-08-23
- Earliest claimed: 1981-08-27
- Inventors: Byrl A. Jedlicka
- Web page: https://patentgrep.com/patent/US4399721A

## CPC

- F16G 11/12: Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire (straining wire in general B21F9/00)
- F16G: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR

## Abstract

A wrench for tightening and loosening turnbuckles and the like includes a body with a worm screw rotatably mounted therein. At least one retainer roller is secured to the body and functions to hold or retain a turnbuckle in engagement with the worm screw. An adapter is connected to the worm screw for coupling rotative energy to the worm screw.

## Claims

### Claim 1

A wrench for tightening and loosening installed turnbuckles in which the turnbuckle is of the type comprising an externally smoothly contoured sleeve that at one end of same threadedly receives a first threaded member having a right hand thread and that at the other end of same threadedly receives a second threaded member having a left hand thread, with the sleeve being of a predetermined size,
said wrench comprising:
a body,
a worm screw journalled in said body for rotational movement about the axis of same and having external worm threading thereon,
said body being formed to define an opening in which a circumferential portion of said worm screw threading at one side of said body is exposed,
and roller means journalled on said housing adjacent said opening and rotatable about an axis disposed at said side of said body and spaced from and extending across said body opening and extending substantially at right angles to the plane that includes said worm screw axis,
said roller means roller surfacing forming a rolling abutment for the turnbuckle sleeve to be seated against in applying the wrench exposed screw worm threading against the turnbuckle sleeve, with said roller means surfacing being separated from said exposed screw worm threading a distance that is less than the turnbuckle sleeve size,
whereby said wrench screw worm threading on said wrench being positioned to seat the turnbuckle sleeve simultaneously against same and said roller means, inpinges against the sleeve for effecting coupled relation of said threading to the sleeve on rotation of said screw worm, for adjusting the turnbuckle sleeve relative to the turnbuckle threaded members.

### Claim 2 (depends on 1)

The wrench set forth in claim 1 wherein:
said roller means comprises a pair of rollers in spaced apart relation that are coaxial with said roller means axis.

### Claim 3 (depends on 1)

The wrench set forth in claim 1 wherein:
said worm screw at one end of same includes an adapter for coupling said worm screw to a source of rotative power for rotating same about said worm screw axis.

### Claim 4 (depends on 2)

The wrench set forth in claim 2 wherein:
said rollers of said pair of rollers are disposed to either side of said plane that includes said worm screw axis.

### Claim 5 (depends on 2)

The wrench set forth in claim 2 wherein:
said roller means axis is fixed in its spacing from said screw worm threading.