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Author Topic: Age of these Vise-Grips?  (Read 2127 times)

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Offline bonneyman

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Age of these Vise-Grips?
« on: October 16, 2013, 03:58:36 PM »
Didn't have one of this style, so, for $3, I bought both pieces.
Then noticed the patent number forged into the jaw. Was issued in 1953, but I doubt these pliers are that old. But they can't be very new, as the newer ones I have don't have  the patent number on the jaws. Anyone care to guess the age of this plier?
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Offline HeelSpur

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Re: Age of these Vise-Grips?
« Reply #1 on: October 16, 2013, 05:21:10 PM »
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Offline mvwcnews

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Re: Age of these Vise-Grips?
« Reply #2 on: October 16, 2013, 06:38:33 PM »
After 1957, when Petersen Mfg. added the "lock release" to the Vise-Grip product line.  Once that was done, the classic Vise-Grip lines from Petersen Mfg. DeWitt, Nebr.  remained pretty static while the 2nd generation of the Petersen family ran the operation.
Regards, Stan Schulz, editor Missouri Valley Wrench Club Newsletter. 


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Offline rusty

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Re: Age of these Vise-Grips?
« Reply #3 on: October 16, 2013, 07:42:01 PM »
In theory, companies aren't supposed to print "patented" on something after the patent expires , which would be in 1970.
However, it did happen...often...
 
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Just a weathered light rust/WD40 mix patina.

Offline bonneyman

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Re: Age of these Vise-Grips?
« Reply #4 on: October 18, 2013, 12:16:21 PM »
Quote from: mvwcnews on October 16, 2013, 06:38:33 PM
After 1957, when Petersen Mfg. added the "lock release" to the Vise-Grip product line.  Once that was done, the classic Vise-Grip lines from Petersen Mfg. DeWitt, Nebr.  remained pretty static while the 2nd generation of the Petersen family ran the operation.
Regards, Stan Schulz, editor Missouri Valley Wrench Club Newsletter.

Great info. Thanks, Stan!
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