March 10th, 2018: Ruby Loftus

[xoxoxoBruce]

Still don’t think she’s “screwing”, just boring, maybe in advance of “screwing” a buttress (breech-lock) thread, but the trapezoidal is metric.
Ah…

The British Army had first examined the weapon when they received a number of Polish-built examples in 1937 for testing, known as the "QF 40 mm Mark I" (QF standing for "quick firing"), or "Mark I/2" after a minor change to the flash hider. A licence was acquired and the gun was converted from metric to imperial measurements. They also made numerous changes to the design to make it more suitable for mass production, as the original Bofors design was intended to be hand-assembled, and many parts were labeled "file to fit on assembly", requiring many man-hours of work to complete.

I highly doubt Ruby had carbide inserts.

[Carruthers]

Seeking some respite from the endless hedonism that is my lot in life, I turned to the book review section of this morning's Sunday Times.

Behemoth: A History of the Factory and the Making of the Modern World by Joshua B Freeman was featured and illustrated by this image.


On her metal: a machinist at an aircraft factory, 1942

Very much in FWIW territory I know, but I've included it as, unlike the painting, it probably isn't open to interpretation.

Over to you, Dwellars.

Link

[xoxoxoBruce]

That was taken by Alfred Palmer in October of '42 at Douglas in Long Beach.
He took several pictures almost the same but slightly different elevations.
Fascinating specialized boring machine.
I HATE PINTEREST.