Patent Model - Improvement in Machines for Making Toy Torpedoes

Maker and role
Thaddeus Spear (b.1828, d.1894), Patentee
Production date
Jul 27 1875
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Object detail

Wood, brass, iron
7 1/2 x 12 1/2 x 5" (19.1 x 31.8 x 12.7cm)
Spear's patent "has relation to a machine for the manufacture of what are called toy torpedoes." These "are made of a little sack of paper twisted together at the top end, and containing a little fulminating-powder placed under a few grains of coarse gravel. This is in order that when the toy is thrown upon the ground, the contact of the gravel with the fulminate will cause the explosion desired." (Patent Number 165,960)
Object number
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