I found this yesterday while looking at some parts. At first I thought it was home made but it's factory produced. Made by the Loomis Beardsley Mfg. Co. Columbus, O.
The lever is a cam configuration and tool works well.
Kenny i have one very similar to this one that my father in law used on the farm for many years. Great tool and easy to use..
Charles, I had to try it out when I got home and I like it better than my other compressors.
Hey, I like that! Cool tool!
Here is the patent for your valve lifter . . .
Edson L. Beardsley
Columbus, Ohio
Valve Lifter
Patent number: 1327015
Filing date: Dec 23, 1918
Issue date: Jan 6, 1920
http://tinyurl.com/9cqf9p9
Regards
Art