Hemingray Insulator Profile: CD 134  
This style is similar to the CD 162, except for the straight outer skirt and no inner skirt. Be sure not to confuse this style with the slightly thinner CD 133. Earliest versions are embossed with the December Patent embossing. Curiously, Hemingray never embossed this style with H.G.Co., rather simply adding the May 2, 1893 patent date with the advent of drip points. Later versions are embossed with Hemingray, and these continued to be produced well into the 1930's. 

Dimensions: 3 7/8" H x 2 7/8" W
Primary
Embossings:
• HEMINGRAY
• NO EMBOSSING
• PATENT - DEC. 19, 1871
• STANDARD
• T-H.E.CO.
Years Produced:
c.1880s-c.1930s
Style Numbers:18, Standard
Rarity Scale (1-10): Common (3)
Usage: Secondary Power Distribution
Trade Name: Deep Groove
Mold Variations Collapse
CD 162 Crown Variant
This is the [070] CD 162 crown mold variation, in which the crown is wider and shaped more like a CD 162. Compare this to the standard shape at the top of the page.
Dec. Pat. / T-H.E.CO. Style
This is the December Patent style mold. The particular one pictured has "T-H.E.CO." embossed on the dome. It has a slightly larger wire groove.
Known Embossings (24) Collapse
 
HEMINGRAY [005] (F-Skirt) HEMIGRAY/PATENT MAY 2 1893/[Blotted out embossing] {Note spelling} (R-Skirt) STANDARD SDP < WANTED! 
HEMINGRAY [010] (F-Skirt) HEMINGRAY (R-Skirt) Nº18 SB < WANTED! 
HEMINGRAY [020] (F-Skirt) HEMINGRAY (R-Skirt) Nº18 SDP
HEMINGRAY [030] (F-Skirt) HEMINGRAY (R-Skirt) PATENT/MAY 2 1893 SDP Photo
HEMINGRAY [040] (F-Skirt) HEMINGRAY-18 (R-Skirt) MADE IN U.S.A. RDP Photo
HEMINGRAY [045] (F-Skirt) HEMINGRAY-18 (R-Skirt) MADE IN U.S.A. SDP Photo
HEMINGRAY [050] (F-Skirt) HEMINGRAY-18/[Numbers and dots] (R-Skirt) MADE IN U.S.A./[Number] RDP Photo
HEMINGRAY [060] (F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) Nº18 SDP Photo
HEMINGRAY [070] (F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) Nº18 {Crown variant; top looks like a CD 162} SDP Photo
HEMINGRAY [080] (F-Skirt) HEMINGRAY/PATENT MAY 2 1893 (R-Skirt) STANDARD SDP Photo
HEMINGRAY [090] (F-Skirt) HEMINGRAY/PATENT MAY 2 1893/[Blotted out embossing] (R-Skirt) STANDARD SDP < WANTED! 
HEMINGRAY [100] (F-Skirt) HEMINGRY {Note spelling} (R-Skirt) PATENT/MAY 2 1893 SDP Photo
NO EMBOSSING [010] [No embossing] {Hemingray product} RDP < WANTED! 
NO EMBOSSING [020] [No embossing] {Hemingray product} SDP < WANTED! 
PATENT - DEC. 19, 1871 [004] (Dome) A (F-Skirt) PATENT/DEC 19 1871 (R-Skirt) PATENT/MAY 2 1893 {Note 'A' in 'MAY' is missing bar} SDP Photo
PATENT - DEC. 19, 1871 [010] (Dome) A (F-Skirt) PATENT/DEC. 19. 1871 SB Photo
PATENT - DEC. 19, 1871 [020] (Dome) A (F-Skirt) PATENT/DEC. 19. 1871 (R-Skirt) PATENT/MAY 2 1893 SDP < WANTED! 
PATENT - DEC. 19, 1871 [030] (F-Skirt) PATENT/DEC. 19. 1871 SB Photo
PATENT - DEC. 19, 1871 [040] (F-Skirt) PATENT/DEC. 19. 1871 (R-Skirt) PATENT MAY 2 1893 SDP Photo
PATENT - DEC. 19, 1871 [050] (F-Skirt) PATENT/DEC. 19. 1871 (R-Skirt) PATENT/MAY 2 1893 SDP Photo
PATENT - DEC. 19, 1871 [055] (F-Skirt) PATENT/DEC. 19. 1871 (R-Skirt) PATENT/MAY 2 1893 {Note 'A' in 'MAY' is missing bar} SDP Photo
PATENT - DEC. 19, 1871 [060] (F-Skirt) PATENT/DEC. 19. 1871 (R-Skirt) B SB Photo
STANDARD [010] (F-Skirt) STANDARD {5/8" unthreaded pinhole} {Hemingray product} SDP < WANTED! 
T-H.E.CO. [010] (Dome) T-H.E.CO. (F-Skirt) PATENT/DEC.19.1871 SB Photo

The following embossings were removed from the price guide because they could not be verified to exist:

Unverified Embossings
Year Removed





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