Harvey's patent 1886 spring lock washer viz: 1 example and bolt 3/4" diameter

Harvey's patent 1886 spring lock washer viz: 1 example and bolt

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Harvey's patent 1886 spring lock washer viz: 1 example and bolt
Science Museum Group
© The Board of Trustees of the Science Museum

Harvey's patent 1886 spring lock washer viz: 1 example and bolt 3/4" diameter

Details

Category:
Motive Power
Object Number:
1888-334
credit:
Ladd, J.H. and Co.