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Author Topic: It is old and adjustable  (Read 1413 times)

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Offline john k

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It is old and adjustable
« on: April 07, 2015, 09:26:14 PM »
A member displayed these two relics at the last MWTCA meeting.   One has been in her family since 1922, the other greatly resembles the patent office drawings submitted by Mr. Petersen, who started Vise-Grip.  It needed a wrench to tighten on the work piece, no pliers grip.  Also were displayed some 30 other Vise Grips.  I thought it was interesting. 
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Offline Papaw

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Re: It is old and adjustable
« Reply #1 on: April 07, 2015, 10:45:29 PM »
Nice displays.
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Offline mvwcnews

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Re: It is old and adjustable
« Reply #2 on: April 08, 2015, 12:41:51 AM »
1st  (  http://www.datamp.org/patents/advance.php?pn=1392443&id=20615&set=1 ) &
2nd  ( http://www.datamp.org/patents/advance.php?pn=1489458&id=21107&set=2 ) "vise-grip" patents
The DATAMP entry for the 2nd patent includes some examples of "manufacturer's evolution" of the product .

The 1942 patent ( http://www.datamp.org/patents/advance.php?pn=2280005&id=21108&set=3 ) is the basis for WWII & later vintage Vise-Grips through the last half of the 20th Century.
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