Hemingray 40
Basic
Region: North AmericaInsulator
Type: Telegraph/TelephoneMaterial: Glass
Style code: CD-152
Maximum Power: 5,000 volts
Manufacturer: Hemingray Glass Company
Production Start: 1910
Production End: 1921
Rarity: Extremely Common
Specific Object
Date Made: 1910-1921Specific Object Condition: Excellent
A Hemingray 40 is a pin type insulator that was used on the telegraph system. It was mass produced from 1910 to 1921, and replaced in favor of the Hemingray 42.