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Interactive Downloadable Catalogs (PDF) as of August 1, 2021

Insulator Information

Link to Extensive Hemingray Insulator Information

Brookfield Glass Company, 2nd to Hemingray in Total Glass Insulator Production

Top 20 Hemingray Insulators Content Attribution: https://en.m.wikipedia.org/wiki/Hemingray_Glass_Company, Christian Willis, copyright holder, used with permission

CD	Style	Introduced	Discontinued	Usage	Nickname
106	9	1890s	1940s	Telephone, rural	Pony
107	9	1950s	1960s	Telephone, rural	Pony
113	12	1890s	1940s	Telephone	Double Groove Pony
121	16	1890s	1920s	Long distance	Toll
122	16	1919	1960s	Telephone, long distance	Toll
124	4	1880s	1910s	Telephone
125	15	1870s	1933	Telegraph
128	CSA	1930s	1950s	Telephone, long distance
129	TS	1940s	1960s	Transposition
133	Standard	1870s	1910s	Telegraph	Signal
134	18	1880s	1930s	Telegraph, secondary power distribution
145	21	1880s	1930s	Telegraph	Beehive
147		1907	1920s	Telegraph	Spiral Groove
152	40	1910	1921	Telegraph	Hoopskirt
154	42	1921	1960s	Telegraph
155	45	1938	1960s	Telephone, long distance
160	14	1880s	1956	Telephone, rural	Baby Signal
162	19	1880s	1940s	Secondary power distribution, telephone	Signal
163	19	1940s	1960s	Secondary power distribution
164	20	1880s	1940	Secondary power distribution