Tool Talk

Wrench Forum => Wrench Forum => Topic started by: vadim_365 on October 01, 2020, 01:27:43 PM

Title: Edisona
Post by: vadim_365 on October 01, 2020, 01:27:43 PM

Good afternoon. I have such tools in my collection. I did not find any information about them. Help? I am looking for the number 1 of the same manufacturer.

Title: Re: Edisona
Post by: vadim_365 on October 01, 2020, 01:30:09 PM

more photos

Title: Re: Edisona
Post by: Lewill2 on October 01, 2020, 02:04:50 PM

These are similar to our Bullard Automatic Wrench Company wrenches patented October 27, 1903 under US patent 742,389. You can look at DATAMP.org and enter the patent number.

Title: Re: Edisona
Post by: vadim_365 on October 01, 2020, 02:19:46 PM

It is similar in shape to a bullard. But this is German, there is the Kissing und Möllmann brand. No more information. Probably produced between 1934-1945

Title: Re: Edisona
Post by: vadim_365 on October 01, 2020, 02:23:45 PM

In Germany, a similar key was produced under the name Platina.

Title: Re: Edisona
Post by: mvwcnews on October 10, 2020, 07:35:03 PM

The G.M. in D.R.G.M. is "GebrauchsMuster" --  not as rigorous as a patent & only applied to articles of utility.  I have come across a few GebrauchsMuster registrations corresponding to U.S. wrench patents.  As noted above, the design is pretty much a copy of the Bullard patent with some slight tweak of details.  Thanks for the name of the manufacturing company -- I might get lucky with a search using  Google books & turn up an advertisement (I had that kind of luck with a MAUSER quick-adjust ad from the early 1920s.)