Patent Model - Improvement in Key-Hole Covers

Maker and role
George Amborn, Patentee
Production date
Aug 28 1877
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Object detail

Wood, brass, steel
7/16 x 3 1/2 x 2 3/16" (1.1 x 8.9 x 5.6cm)
The object of Amborn's invention " is to provide convenient means for closing a key-hole so as to prevent a lock from being opened. This object I effect chiefly by the employment of a key-hole-closing slide, in combination with a tumbler, an operating-key, and a catch for locking said key..." (Patent Number 194,635)
Object number
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