Five machine screws: three raised head, a countersunk and a cheese-head, for double grindstone model

Made:
1853
SMG00066272

SMG00066272
Science Museum Group
© The Board of Trustees of the Science Musuem

Five machine screws from model of double grindstones, scale 1:4, by William Muir & Co., Manchester, 1853

Muir patented his double grindstone in 1853. The Dictionary of National Biography records: 'A model of his grindstone, patented in 1853 (No. 621), may be seen at South Kensington Museum. This consists of two stones running in contact, one being caused to traverse longitudinally, with a very slow motion. In this manner each stone corrects the defects of the other, and both are maintained accurately cylindrical in form.'

Details

Category:
Hand and Machine Tools
Object Number:
1858-12/2
Materials:
steel (metal) and wrought iron
credit:
William Muir & Co.