Harden Hand Grenade Fire Extinguisher Value Guide

Patented by John J. Harden in 1871, these cobalt blue glass vessels represent a unique era of Victorian fire safety. They are highly collectible due to their striking quilted diamond pattern and their historical role as impact-shattered extinguishers used between 1884 and 1890.

What affects the value of Harden Hand Grenade Fire Extinguisher?

• The presence of the original chemical contents and intact seal can significantly impact the market price.
• Condition of the glass is paramount; chips or cracks in the quilted diamond pattern reduce the $270-$300 valuation.
• Rarity of the specific cobalt shade and the clarity of the embossed Harden patent information.
• Historical provenance or the inclusion of original wall-mounting brackets can increase collector interest.

How to Identify Harden Hand Grenade Fire Extinguisher?

• Look for the distinct cobalt blue glass color and the signature quilted diamond relief pattern on the exterior.
• Verify the presence of the original cork seal, though many surviving examples have been emptied of their toxic carbon tetrachloride.
• Check for authentic late 19th-century glass manufacturing marks consistent with United States production between 1884 and 1890.
• Ensure the glass body is intact without hairline fractures, as these were designed specifically to shatter upon impact.

History of Harden Hand Grenade Fire Extinguisher

Patented in 1871 by John J. Harden, these grenades were filled with carbon tetrachloride or salt water. They were intended to shatter upon impact, releasing the chemical to smother flames. While popular in the late 19th century, they were later replaced by more effective mechanical extinguishers as the chemicals inside were found to be toxic when heated.