Antique 1870s Gilbert Patent Lever Door Knob Set

Antique door knob set with a white porcelain door knob and a nickel plated brass keyhole back plate. The backing of the plate is made of cast iron. Made by Gilbert Lock Company. The patent date is May 30, 1876, and it is inscribed on the back. Gilbert’s Patent eliminated the standard set screws, washers, and spindles normally required to attach hardware components. The specialized mortise is not included. Priced as two attached door knobs and back plates. Inventory no.: J155158 Availability: One available Location: Scranton warehouse Dimensions: Knob 2.125 in. diameter x 2 in. D, plate 6.5 in. H x 2.25 in. W x 0.5 in. D, drop 1.75 in. Width (in.): 2.25 Height (in.): 6.5 Depth (in.): 2 Weight: 2 lb. Composition: Brass, Ceramic, Steel Color: White