Gabriel Riddle
From Graces Guide
of 172 Blackfriars Road, London
Lock Makers
1822 The mechanical pencil was invented by Sampson Mordan and Gabriel Riddle - the earliest Mordan pencils are hallmarked SMGR. Note: There is an opinion that the propelling pencil was invented by John Isaac Hawkins with Sampson Mordan and that Gabriel Riddle was a manufacturer.
1841 Manufacturer of superior articles including pens, pencils, ink holders, and locks on the Bramah and Barron patent principle[1]
See Also
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Sources of Information
- ↑ Post Office London Directory, 1841