Patent Model - Improvement in Burglar-Alarms

Maker and role
William Parker, Patentee
William Parker, Assignee
Production date
Oct 10 1876
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Object detail

Media/Materials
Metal, wood, brass
Measurements
1 1/2 x 6 x 2 3/4" (3.8 x 15.2 x 7cm)
Description
Parker described his invention as it "relates to an improvement on that class of burglar-alarms which I have described in my Patent No. 167,559, dated September 7, 1875; the object of my present improvement being to simplify the construction of my alarms, to reduce their cost, and to facilitate the operation of applying them to doors or windows." (Patent number 183,203)
Object number
61.47.126a-c

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