I’m going through a bucket of vise grips I got and came across this pair of Clench pliers? I’ve tried to do some research on what this is or would be used for. I have came across a pair on eBay that looks like it that says they are adjustable wrench?
What is this tool?
- Thread starter Smokeem
- Start date
Old Man Roger
Well-known member
Saw s… ahh never mind.
seber
Well-known member
Adjustable striker wrench. Not only replaces a full set of strikers but eliminates the slip on softer nuts.
Old Man Roger
Well-known member
Can’t imagine its a striker wrench, I don’t think that thing would hold up well to a sledge hammer.
RTM
Well-known member
Lots of listings in google books, mostly snippet view.
This ain’t it, but a clue?
Gotta ignore Roanoke VA, and NSW, Aus listings.
This ain’t it, but a clue?
Gotta ignore Roanoke VA, and NSW, Aus listings.
World Dredging & Marine Construction
books.google.com
RTM
Well-known member
Back up wrench, per the patent
Not in DATAMP
US3964352A - Back-up wrench for threaded connectors - Google Patents
The back-up wrench comprises a stationary jaw having an angular gripping wall adapted to grip two adjacent sides of different size connectors, and a rotatable jaw having a concave wall adapted to grip limited portions of two symmetrically-opposite sides of the connectors. The rotatable jaw is...
patents.google.com
Not in DATAMP
four.cycle
Well-known member
^ spendy little critter there.
N-S-W / N-S-W Corp, Houston, TX / hydraulic torque wrench / patent 2972918 Feb 28 1961 O.C. Huff and Walter J. Belanger Jr. and Donald F. Burnett & 3706244 Dec 19 1972 Claude H. Wilmeth & 3964352 Jun 22 1976 Bobby Wayne Dukes / see also B.K. Sweeney Mfg. Co., Denver, CO; see also Enerpac Tool Group Corp., Menomonee Falls, WI /
Sweeney / B.K. Sweeney Mfg. Co., 6300 E. 44th Ave., Denver, CO / est. 1901 closed 1977 / aircraft assembly and repair tools / patent 2773574 Dec 11 1956 & 3076362 Feb 5 1963 Edward T. Able & 3964352 Jun 22 1976 Bobby Wayne Dukes /
Enerpac / Enerpac Tool Group Corp., N86 W12500 Westbrook Crossing, Menomonee Falls, WI 53501 / https://www.enerpac.com/ / est. 1910 (as Hydraulic Tool Co.) / patent 3964352 Jun 22 1976 Bobby Wayne Dukes / see also N-S-W Corp, Houston, TX; see also B.K. Sweeney Mfg. Co., Denver, CO /
N-S-W / N-S-W Corp, Houston, TX / hydraulic torque wrench / patent 2972918 Feb 28 1961 O.C. Huff and Walter J. Belanger Jr. and Donald F. Burnett & 3706244 Dec 19 1972 Claude H. Wilmeth & 3964352 Jun 22 1976 Bobby Wayne Dukes / see also B.K. Sweeney Mfg. Co., Denver, CO; see also Enerpac Tool Group Corp., Menomonee Falls, WI /
Sweeney / B.K. Sweeney Mfg. Co., 6300 E. 44th Ave., Denver, CO / est. 1901 closed 1977 / aircraft assembly and repair tools / patent 2773574 Dec 11 1956 & 3076362 Feb 5 1963 Edward T. Able & 3964352 Jun 22 1976 Bobby Wayne Dukes /
Enerpac / Enerpac Tool Group Corp., N86 W12500 Westbrook Crossing, Menomonee Falls, WI 53501 / https://www.enerpac.com/ / est. 1910 (as Hydraulic Tool Co.) / patent 3964352 Jun 22 1976 Bobby Wayne Dukes / see also N-S-W Corp, Houston, TX; see also B.K. Sweeney Mfg. Co., Denver, CO /
We have a machine at work that looks like the one in post 8 that is for hydraulic tensioning of large studs, typically 1-1/4 diameter. The machine stretches the stud hydraulicly, installs the nut at a low torque value, then releases the tension on the stud. This keeps you from having to use large torque values as the stretch achieves the same result. I don't remember who made the tensioning machine, but it was an oil services company in TX. Maybe this wrench is used to snug up the nuts in a similar hydraulic tensioning operation?
Old Man Roger
Well-known member
So adjustable wrench?Back up wrench, per the patent
US3964352A - Back-up wrench for threaded connectors - Google Patents
The back-up wrench comprises a stationary jaw having an angular gripping wall adapted to grip two adjacent sides of different size connectors, and a rotatable jaw having a concave wall adapted to grip limited portions of two symmetrically-opposite sides of the connectors. The rotatable jaw is...patents.google.com
Not in DATAMP
RTM
Well-known member
You assume I read the patent. I was multi tasking I'm sure.
Ok, here is the key bit.
Such an operation may often require two operators, but when another operator is unavailable, or when space precludes the use of two operators, special nut and bolt holding devices, known as "back-up" wrenches, are used. To prevent the bolt from rotating, the back-up wrench is placed on the first nut and allowed to bear against and be supported by the next adjacent nut.
So this prevents trying to use a Crescent type wrench, and hoping it stays in place while you turn the other nut on a piece of all thread, holding an oil field sized pipe flange together
Old Man Roger
Well-known member
WWheeler
Well-known member
We use lok-rite backup wrenches at work, but in places and torque levels I don't think that funky vise grip would last very long.
