Hemingray Glass Company

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The Hemingray 42, a telegraph insulator produced by the Hemingray Glass Company, is widely found in North America

The Hemingray Glass Company was an American glass manufacturing company. Robert Hemingray and Ralph Gray founded the company in Cincinnati in 1848.[1] In its early years the company went through numerous and frequent name changes, including Gray & Hemingray; Gray, Hemingray & Bros.; Gray, Hemingray & Brother; Hemingray Bros. & Company and R. Hemingray & Company before incorporating into the Hemingray Glass Company, Inc in 1870.[1] The Hemingray company had factories in Cincinnati and Covington, Kentucky with main production in Muncie, Indiana. Though Hemingray was best known for its telegraph insulators, the company produced many other glass items including bottles, fruit jars, pressed glass dishes, tumblers, battery jars, fishbowls, lantern globes, and oil lamps.[1] In 1933, Owens-Illinois Glass Company purchased the company but retained the production facility in Muncie under the Hemingray name.

The main plant in Muncie closed in 1966 and insulator production ceased.[2] The complex is now the used by Gerdau Ameristeel, a steel production company headquartered in Brazil.


Hemingray was best known for producing telegraph insulators. To give an overview of the large variety of styles produced, the following table contains the twenty most common.[3] There are two numbers given in this table: the Consolidated Design (CD) number and the style number. The CD number is from a classification system developed by collectors that refers to the shape of the insulator and is completely independent from the Hemingray Glass Company.[4] However the style number (or name) was assigned by Hemingray to each insulator. Due to slight modifications in design over years of production single styles can span multiple CD numbers.

CD Style Introduced Discontinued Usage Nickname Photo
154 42 1921 1960s Telegraph CD 154 Hemingray No. 42.jpg
121 16 1890s 1920s Long Distance Toll CD 121 Hemingray No. 16.jpg
152 40 1910 1921 Telegraph Hoopskirt CD 152 Hemingray No. 40.jpg
145 21 1880s 1930s Telegraph Beehive CD 145 Hemingray "beehive".jpg
107 9 1950s 1960s Telephone, Rural Pony CD 107 Hemingray No. 9.jpg
155 45 1938 1960s Telephone, Long Distance --- CD 155 Hemingray No. 45.jpg
106 9 1890s 1940s Telephone, Rural Pony CD 106 Hemingray No. 9.jpg
163 19 1940s 1960s Secondary Power Distribution --- CD 163 Hemingray No. 19.jpg
160 14 1880s 1956 Telephone, Rural Baby Signal CD 160 Hemingray No. 14.jpg
162 19 1880s 1940s Secondary Power Distribution, Telephone Signal CD 162 Hemingray No. 19.jpg
133 Standard 1870s 1910s Telegraph Signal CD 133 Hemingray Standard.jpg
122 16 1919 1960s Telephone, Long Distance Toll CD 122 Hemingray No. 16.jpg
125 15 1870s 1933 Telegraph --- CD 125 Hemingray No. 15.jpg
147 --- 1907 1920s Telegraph Spiral Groove CD 147 Hemingray "spiral groove".jpg
129 TS 1940s 1960s Transposition --- CD 129 Hemingray TS.jpg
113 12 1890s 1940s Telephone Double Groove Pony CD 113 Hemingray No. 12.jpg
128 CSA 1930s 1950s Telephone, Long Distance --- CD 128 Hemingray CS.jpg
134 18 1880s 1930s Telegraph, Secondary Power Distribution --- CD 134 Hemingray No. 18.jpg
164 20 1880s 1940 Secondary Power Distribution --- CD 164 Hemingray No. 20.jpg
124 4 1880s 1910s Telephone --- CD 124 Hemingray No. 13.jpg

See also[edit]

Brookfield Glass Company

Insulator (electrical)


  1. ^ a b c Whitten, David (2015). "Hemingray Glass Company". glassbottlemarks.com. Retrieved May 25, 2015.
  2. ^ Meier, Bill (August 27, 1995). "Hemingray Glass Insulators - 100 Years Of History". insulators.info. Retrieved January 28, 2019.
  3. ^ Willis, Christian. "Hemingray.info - The Hemingray Database: Top 20 Identified Insulators". hemingray.info. Retrieved January 28, 2019.
  4. ^ Meier, Bill (December 14, 2004). "CD Numbers Explained". insulators.info. Retrieved January 28, 2019.

External links[edit]