Early Valve Adjusting tools

[Frank Murch]

I am working on understanding Valve adjusting tools

I think the following is true

There is a patent dated on 6-30-25. It was filed in Jan 7, 1924 by Earl P. Putrow. It is a remarkably short patent and describes a tool to adjust the valves on a running ngine. The patent is assigned to ValTul Corporation - Milwaukee, WI . I know nothing about this company. I also know nothing about Earl (other than he was in Milwaukee) The patent picture is here

Patent Drawing

Patentdrawing-valve-adjusting-tool.png (114.77 KiB) Viewed 736 times

In 1927 Catalog D (page 28) a valve adjusting tool (No 21) is presented.



The picture is used again as a V-12 is 1928 Catalog E (page 24) - 1933 Catalog J page 40

1927 Catalog Drawing

1927valve-adjusting-tool.jpg (31.62 KiB) Viewed 736 times

Here are 2 actual tools

Another Early Tool

early-valve-adj-tool-2.jpg (112.01 KiB) Viewed 736 times

Early Valve Adjusting Tool

early-valve-adj-tool-1.jpg (93.92 KiB) Viewed 736 times

The handles do not match the drawing or each other. The knob is obviously first generation. Any idea what the handle shape means?? I see no date stamps, any way to date these??

I also have sockets, but not a full set of 3.