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Shaw, Thomas

Name Street Town State From To
Shaw, Thomas   Philadelphia Pennsylvania    


Patent Date Remarks
34,032 December 24, 1861 Improvement in Revolving Fire-Arms
Patent drawing
Specification
98,198 December 21, 1869 Improvement in Cartridge-Feeders for Gun-Hammers
Patent drawing
Specification
147,871 February 24, 1874 Improvement in Cartridges for Ordnance
Patent drawing
Specification
147,872 February 24, 1874 Improvement in Cartridges for Gunpowder-Hammers
Specification
223,767 January 20, 1880 Gunpowder Punching-Machine
Patent drawing
Specification
Specification, 2nd page
255,542 March 28, 1882 Cartridge
Patent drawing
Specification
Noumerous patents but only very few were for guns. I hezitated to show those concerning Gunpowder Hammers.

Contract for
   


Product
This patent covered the addition of a half cock notch to self-cocking revolvers. In operation, it was similar to the "hesitation" mechanisms patented by Ells, Cooper and others. The trigger was pulled a short distance, raising the hammer from the nipple and holding it in the raised position until the trigger was pulled further. The patent model was an Allen Wheelock bar hammer revolver with the half cock feature added. No production use of this patent was made.