The CHARLES CLARK Protractor of 1904

SalemRule · Feb 12, 2020

I recently had the opportunity to admire an example (perhaps the sole example) of a curious Machinist Protractor.

US759239A - Instrument for measuring angles.
- Google Patents

SalemRule · Feb 12, 2020

It's cool how his signature on the Patent Papers matches that on the Tool.

I do not belong to Ancestry.com, so my ability to discover his birth or death is limited. I found nothing on the web. I also could not find any other patents of his.

That fact he was a citizen of the UK at the time would indicate, to me, that Charles may have moved around a bit during his life. Which complicates research.

But he did live in Beverly, Mass at the Patent Date. And may have worked at The United Shoe Company: a major employer in Beverly at the time.

United Shoe Machinery Corporation - Wikipedia

SalemRule · Feb 12, 2020

"The Shoe" circa 1911

Hello, Charles ?

Is that you ?

rivett608 · Feb 12, 2020

That is super cool, would have loved to own it! I have a prototype of a patented square that has nearly a dozen features that to my knowledge was never manufactured.

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The CHARLES CLARK Protractor of 1904

SalemRule

Cast Iron

SalemRule

Cast Iron

SalemRule

Cast Iron

rivett608

Diamond

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