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Maker
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Single helical spiral bevel wheel and pinion

Single helical spiral bevel wheel and pinion

circa 1922
Citroen double herringbone spur wheel

Citroen double herringbone spur wheel

1922
Small pair of laminated staggered tooth gears

Small pair of laminated staggered tooth gears

1912-1926
D.B.S. 5" single reducing helical gear with cover

D.B.S. 5" single reducing helical gear with cover

1926
Photograph: Clepsydra with gears, by Ctesibius, c. 250 B.C reproduced from 'Hydraulics and Mechanics' by Thos. Ewbank.

Photograph: Clepsydra with gears

Parts from Spelsbury Water Mill : Axle end with bevel wheel, iron shaft with bevel pinion; pulley (incomplete); 3 beams with journal bearing

Components from Spelsbury Water Mill

1790-1820
Three gear wheels cut from laminated phenolic resinoid bonded sheet (fabric base) ( different types)

Three gear wheels of textile bonded laminated phenolic resin

1934
Gear wheel and shaft, 2 pinion shafts and 2 couplings - (turbine reduction gearing ex H.M.S. "Badger")

Gear wheel and shaft

1911