Patent Model - Improvement in Sash-Fasteners
Maker and role
Andrew Armstrong, Patentee
Production date
Jul 08 1879
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Object detail
Media/Materials
Wood, brass
Measurements
12 x 8 1/2 x 3" (30.5 x 21.6 x 7.6cm)
Description
Armstrong's patent furnishes "an improved sash-lock for windows which shall be simple in construction and convenient and reliable in use, being so constructed that it cannot be unfastened from outside the window, whether the sash be locked when closed or when partly raised, and which will prevent all rattling." (Patent Number 217,313)
Collection
Object number
2015.14.2930a,b
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