Roller bearing bushed sheave

Made:
1787 Date of patent in unknown place
Roller bearing bushed sheave

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Roller bearing bushed sheave
Science Museum Group
© The Board of Trustees of the Science Museum

Roller bearing bushed sheave, 7" diameter; for pulley block (Garnett and Co's patent 1787)

Details

Category:
Mechanical Power Transmission
Object Number:
1864-15
Materials:
brass and lignum vitae
Measurements:
7.4803 x 1.1417 in.; 190 x 29 mm
type:
roller bearing
credit:
Board of Admiralty