Need help finding a patent number for a Holly grip scale...

[ozymandias]

Hello all,

I am trying to find a patent number for a countertop arcade coin-op Grip Scale or Strength Tester made my the Holly Mfg. Co, Detroit, Michigan POSSIBLY around 1950. I need to see the patent drawings to recreate and recast a missing internal lever for several of these machines.

Looked all over the machine for a patent number and didn't see one, went to Google patent search and checked from 1925-1955 using keywords such as "grip, strength, hand, scale, tester, amusement and coin" in various combinations as well as the name "Universal Grip" which appears on the paper dial on the machine front. Although the theory of the Holly is similar to its Gottlieb counterpart, the internal parts are very different. Any help would be appreciated, thanks.

Mark

[drwstr123]

I didn't find a listing on the Arcade Museum site:
http://www.arcade-museum.com/
Mike