Lamp chimney patent model. The chimney is a metal cylinder that flares as it gets closer to the base. A metal skirting around the chimney’s base has a pierced decorative border and is mostly detached from the chimney. The adjoining tag states, “No. 146, 862 / W.S. Blaisdell / & C.K. Young / Lamp Chimney / Patented Jan. 27th / 1874.” in typed and handwritten text.