Patent Model - Improvement in Sash-Fasteners

Maker and role
Andrew Armstrong, Patentee
Production date
Jul 08 1879
See full details

Object detail

Wood, brass
12 x 8 1/2 x 3" (30.5 x 21.6 x 7.6cm)
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)
Object number
Currently on display?


My shortlist

Object type

Explore other objects by color

Public comments

Be the first to comment on this object record.

Google reCaptchaThis site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.