Tool Talk

Wrench Forum => Wrench Forum => Topic started by: Papaw on October 23, 2013, 08:08:10 AM

Title: J O Mfg Co Torque Wrench
Post by: Papaw on October 23, 2013, 08:08:10 AM

Looking for info on this 1/4" drive 100 inch/pound torque wrench brought to the office by a co-worker. It belonged to his grandfather, then his father, and is being used even now in automatic transmission work. It is probably WWII vintage and may have been an aircraft tool.
Marked-
J O MFG CO
SOUTHGATE CAL.

Other marks are
                 J O
TRADE-----       -------MARK
                LINE

And    JOMI
           100 

It is not a ratchet, and has a knurled band to set to lock or unlock the torque adjustment. Scale is 0 - 100 by 10s. Length is 8 inches.

Title: Re: J O Mfg Co Torque Wrench
Post by: Papaw on October 23, 2013, 08:33:39 AM

I found a patent on DATAMP for a drill with an adjustable head by the J O Mfg Co.
http://www.datamp.org/patents/displayPatent.php?id=14411 (http://www.datamp.org/patents/displayPatent.php?id=14411)

Title: Re: J O Mfg Co Torque Wrench
Post by: Papaw on October 23, 2013, 08:52:29 AM

I have found some old forum discussions saying these were mlitary tools, and I see J O -Line is still around-
http://www.microprecision.com/equipment/JO-LINE_TOOLS,_INC.-CALIBRATION.html (http://www.microprecision.com/equipment/JO-LINE_TOOLS,_INC.-CALIBRATION.html)

I don't think this one is it- http://www.datamp.org/patents/displayPatent.php?pn=2734411&id=42074 (http://www.datamp.org/patents/displayPatent.php?pn=2734411&id=42074)

And none of these are old enough-
http://www.patentmaps.com/assignee/Jo-Line_Tools_1.html (http://www.patentmaps.com/assignee/Jo-Line_Tools_1.html)

Title: Re: J O Mfg Co Torque Wrench
Post by: rusty on October 23, 2013, 07:48:45 PM

On the same inventor theory, I see these, the first few don't match much better tho...

01560929        19251110        Kitchen utensil.         Woods,R.G.
02731865        19560124        Wrench   Woods,R.G.
02734411        19560214        Wrench   Woods,R.G.
02743638        19560501        Torque-limiting wrench   Woods,R.G.
02789454        19570423        Torque.llmiting wrench   Woods,R.G.
02826107        ----    Ratcheting torque-limiting wrench        Woods,R.G.
02897704        19590804        Type wrench      Woods,R.G.
03016773        ----                   n/a   Woods,R.G.