France, 1950s
There is a cam of sorts inside the cylindrical housing behind the return spring.
Casin
France, 1940s
M. Brunelière, G.E.R.
France, 1940s
Édouard Moreau
France, 1940s
Bowden
France, 1920-30s
"Toggle" or "Linkage"-based designs
Campagnolo "Delta"
M. Brun, Super Égal
France, 1940s
MRC tt brake
US, 1990s
Monitor
UK, 1930s
Soncini
weird Italian town bike brake. the cable apparently runs down through the hindmost upside-down v-shaped brace, under a bar, and then up to an attachment point on the upside-down u-shaped brace. the v-shaped brace is moved down, the u-shaped brace up, and the part holding the brake pad pivots the pad towards the rim. talk about overly complex solutions...
Terrot
France, 1940s
Weinmann
Switzerland
Unknown - Phillips? Ashbys?
UK, 1930s
Unknown
UK, 1930s
BSA Paratrooper
UK, 1930s
Straddle Bar Cantilever type
Resilion Anchor
UK
Monitor Super Cam
UK
Unknown
UK, 1930s
Unknown type
B & T (Bantel) Manx
UK
Weinmann HP-Turbo
Switzerland, 1980s - apparently works via some sort of worm gear...