Vintage work crew photos

[Frank S]

Oh of course! It's a rail shop.
Not gears, they are faceplates, a locomotive wheel visible toward viewer; possibly turning mounted wheels.
To busy critiquing bad lighting, forgot good parts of photograph.
Still cone-drive, running a jack shaft, to get realistic RPM. The final drive is teeth on face plate. Begs the question, how big a vertical shaper cut those teeth? This could be still half a generation before large mills.

Yes and the large diameter of the faceplates were to accommodate the drive wheels of the big steam locomotives

[Jon]

Strength testing at Alcoa Aluminum Research Laboratory. 1955-1965.

Fullsize image: https://diqn32j8nouaz.cloudfront.net...b_fullsize.jpg

[mr mikey]

It passes the test when the guy on top hits his head on the ceiling and the part isn't bent. ouch. The good old days. Mr Mikey.

[Toolmaker51]

Tensile or compressive? Crankshaft to the right not much of a clue. But that's a heck of a Tinius-Olsen.

[Jon]

Short Sunderland aircraft construction workers. Rochester, Kent, England.

Fullsize image: https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg

[Toolmaker51]

Not just aircraft, that's fuselage of a bomber sized flying boat, maybe even amphibious. That would take a more serious building than 'normal' aircraft!
Yup, recognized it, as former nut on aviation. https://en.wikipedia.org/wiki/Short_Sunderland

Far more beneficial post than a Short Sunderland workers wisecrack, as I often descend in to.

[marksbug]

former?:

[Toolmaker51]

Former as in less intense than ages 6 thru 30 something.
Sleeping under flight deck catapults of Enterprise cured me. After a small fire (not 1969) we moved aft awhile, under the arresting gear. No improvement.

[mwmkravchenko]

That's still a large airplane. Larger than a Hercules.

[Jon]

Cpl. Albert Singer (Left); T/Sgt. Weldon L. Rugg, and Cpl Walter Robert (Right) fix the hatch on a Northrop P-61 "Black Widow" night fighter of the 9th Air Force, France, 27 Sep 1944

Fullsize image: https://diqn32j8nouaz.cloudfront.net...k_fullsize.jpg