Model of a friction clutch (scale 1:4).1884-1888. Model of a friction clutch (scale 1:4).1884-1888 1884-1888
Benn friction clutch no.2 b type G in part section in bearings on stand. Benn friction clutch no.2 1901-1912
Half section of a Weston type clutch for a 1" shaft, as improved by Prof Hele-Shaw in 1901. Half section of a Weston type clutch for a 1" shaft 1901-1907