Drawing of escapements for clocks

Made:
1851
maker:
Roberts, Richard

Shows 'Detached crank-escapement', 'Detached pin wheel escapement', and one other. Bears name 'Richd. Roberts, Patentee, Globe Works, Manchester'. Relates to patent 12,207 of July 1848?

Details

Measurements:
500.00mm (height)
745.00mm (width)
Extent:
1 sheet
Identifier:
MSL/0171
Access:
Open Access
rights:
Copies may be supplied in accordance with current copyright legislation and Science Museum Group terms and conditions