Chicago Sash Pulley Company Reproduction Patent Drawing Card

Chicago Sash Pulley Company Reproduction Patent Drawing Card

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Diagram from the Nov. 29, 1887 patent for an improved window sash pulley, issued to the Chicago Sash Pulley Company. Beautiful, vintage line drawing shows the workings of the mechanism for window sashes.

Chicago Sash Pulley Company was originally housed at 253 Lake St.