Patent Model - Improvement in Metallic Seals

Maker and role
Alphonse Friedrick, Patentee
Production date
Apr 18 1876
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Object detail

18 x 16 3/4 x 1 1/2" (45.7 x 42.5 x 3.8cm)
Friedrick's patent "consists in certain improvement upon the metallic seal... The seal, as patented, shows a shackle-wire with a soft-metal button constructed with two heads or disks connected by a shank or stem, and so arranged that when the wire is wrapped or twisted around the stem and the edges of the disk compressed into a single thin milled flange, the latter prevents the opening of the two disks without detection." (Patent Number 176,290)
Object number
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