Description: Patent for improvements in a combined sash balances and fasteners, using two sashes, a rotatable shaft, a ratchet and a friction-wheel; all these parts work together “to simplify the means whereby one sash is made to balance the other and by which either sash may be adjusted without disturbing the other.” (Lines 16-19) Illustration is included.
Date: April 7, 1891
Creator: Ingalls, Alfred
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department