Small sectioned example of a "Heliocentric" reduction gear
1926
'Heliocentric' reduction gear for 1/4 H.P. motor
1926
"Heliocentric" triple reduction gear ratio 20
1926
Small chain reduction gear box
circa 1929
Gearbox, Self-Changing Gears Ltd
Gearbox type 151 AG
"Circarc" gearbox, 1959
1960
Merritt-Brown gearbox of type used in Churchill tank
1940-1945