Improvement in Metallic Window-Blinds.
Description:
Patent for "a blind which acts both as a barrier to the progress of flames attacking windows and as a convenient shutter for the common purposes, and is adapted to be adjusted and securely locked in an open or closed position." (Lines 21-26) Includes instructions and illustrations.
Date:
August 10, 1875
Creator:
Mackrell, William S.
Partner:
UNT Libraries Government Documents Department