1929 one-armed blacksmith prosthetic arm - photo

[hemmjo]

I agree is it welding or brazing. I am trying to figure what is causing what appears to be a secondary "flame". The flame at the torch tip look like it is a bit disconnected as it is off to one side.

Perhaps something to do with taking the photograph? Seems it would be very difficult to get the exposure as good as it is in that photo with that bright flame, yet still the rest of the shot is well exposed.

[12L14]

Have you ever heard about Celso Mascarenhas?

Check out his videos:

https://m.youtube.com/channel/UC87Ga2R7IghA26_0mPjicHw

He is wearing his prostetics(during work) purely for "cosmetic" reasons(that is only for videos).

[Toolmaker51]

Sure does.........
History of The Prosthetic Leg Through The Ages - Amputee ...
https://www.amputee-coalition.org › history-prosthetic-l...
Apr 19, 2019 — James Edward Hanger (1843 – 1919) was an American engineer who was the first amputee of The Civil War. He spent his convalescence designing a prosthetic leg, and would go on to patent his “Hanger Limb” and found the company that became Hanger Inc.

[clavius]

I think it's pretty clear that he is brazing or gas welding as he is feeding a filler rod of some sort with his other hand into the work. I suppose for cutting he could work the torch with both hands, using his left hand to steady the torch and work the oxygen lever.

[NortonDommi]

Congratulations on his persistence, but how he twists his right mustache...?

He uses his left hand but does it looking in a mirror.

[NortonDommi]

hemmjo "I am trying to figure what is causing what appears to be a secondary "flame". The flame at the torch tip look like it is a bit disconnected as it is off to one side."
The tip has a piece attached to the side that preheats/postheats the work depending which way you orient it.