This is a premier example of a 19th-century Blackman’s Patent brass finger lamp (chamber lamp). Patented by Ebenezer Blackman of Norwalk, Connecticut, this design was a significant advancement in mid-Victorian lighting safety. This specific specimen is distinguished by its crisp markings and the presence of its original components, making it a "shelf-ready" addition for a serious lighting or Civil War-era collector.

Historical Significance

• The Blackman Patent: The base is clearly stamped with "Blackmans Patent" along with the critical date of May 19, 1863. This Civil War-era patent (U.S. No. 38,548) represents a crossover collectible of interest to both historical technology enthusiasts and antique lighting specialists.

• 100% Complete: This lamp retains its brass snuffer cap and safety chain. These components were designed to extinguish the flame without the risk of spraying hot oil—a feature that is missing from approximately 70% of surviving examples.

Construction & Details

• Manufacturer/Inventor: Ebenezer Blackman / Blackman's Patent.

• Burner: Period-correct brass burner with a functional thumb-wheel wick adjuster.

• Handle: Elegant stamped finger loop with Victorian scroll motifs, securely attached to the font.

• Base Markings: Fully legible stamped patent dates including Aug 31, 1858, Aug 6, 1861, and May 19, 1863.

Reference

Book Title: Oil Lamps: The Kerosene Era in North America

Author: Catherine M. Thuro

Page Number: 68–69

Note: Reference details the specific construction and patent history of Blackman’s metal safety lamps during the 1860s.

Item dimensions: 3.5 tall × 3.5 wide × 3.25 deep  

Weight of item: 2.4 oz 

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