Lightning Bolt(?) Symbol ID
 

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this is one have been wondering about for nigh onto a half century...

curious as to the maker behind the symbol on the stem binder bolt head in this image

it is also seen on the heads of seat binders

was current during the 1960's but have no information as to start/stop dates for it

since it appears on both stem binders and seat binders makes me think it a manufacturer of small bits of hardware much as with ALGI of France

https://thecabe.com/forum/attachment...2-jpg.1666774/

thank you for any information ;)


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The script looks to say Sprint in Schwinn style script from the 60's, so.....

Maybe one of the suppliers of their cranks, derailleurs, or?

Owsley Stanley limited edition.

Since Huret was a major supplier of Schwinn deraileurs at that time it seems reasonable to assume that the maker of other small parts was French. Could it be ALGI Industrie, 74950, SCIONZIER, AUVERGNE-RHONE-ALPES France?

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thank you for this suggestion

ALGI binder bolts exhibit concave rather than convex heads and are without marking

herewith a few examples -


https://cimg2.ibsrv.net/gimg/bikefor...d6ce072f15.jpg
https://cimg6.ibsrv.net/gimg/bikefor...0f84c06e05.jpg

https://thecabe.com/forum/attachment...-jpeg.1667574/

https://thecabe.com/forum/attachment...e-jpg.1666776/
https://velobase.com/CompImages/Stem...438E4B3BC.jpeg
[MILREMO marked Philippe]
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and when one gets back far enough into the interwar period their heads were flat -


https://cimg3.ibsrv.net/gimg/bikefor...ad6d302179.jpg

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