Hemingray Insulator Profile: CD 281  
This high voltage style is identical to the CD 183 in every respect except that this style has three petticoats instead of two, and therefore has a higher voltage rating. 

Dimensions: 3 3/4" H x 4 5/8" W
Primary
Embossing:
HEMINGRAY
Years Produced:
c.1893-1930s
Style Numbers:1 High Voltage, 2 High Voltage, 71, 71 High Voltage
Rarity Scale (1-10): Fairly Common (4)
Usage: High Voltage
Voltage Rating: 15,000 Volts
Known Embossings (11) Collapse
 
HEMINGRAY [010] (F-Skirt) HEMINGRAY - 71 (R-Skirt) MADE IN U.S.A. RDP Photo
HEMINGRAY [020] (F-Skirt) HEMINGRAY - 71 (R-Skirt) MADE IN U.S.A. SDP Photo
HEMINGRAY [030] (F-Skirt) HEMINGRAY - 71/[Numbers] (R-Skirt) MADE IN U.S.A. RDP Photo
HEMINGRAY [040] (F-Skirt) HEMINGRAY/Nº 1 HIGH VOLTAGE (R-Skirt) PATENT MAY 2 1893 SDP < WANTED! 
HEMINGRAY [050] (F-Skirt) HEMINGRAY/Nº 1 HIGH VOLTAGE (R-Skirt) PATENTED MAY 2 1893 SDP Photo
HEMINGRAY [060] (F-Skirt) HEMINGRAY/Nº 1 HIGH VOLTAGE/[Blot out under '1'] (R-Skirt) PATENT MAY 2 1893 SDP < WANTED! 
HEMINGRAY [070] (F-Skirt) HEMINGRAY/Nº 2 HIGH VOLTAGE (R-Skirt) PATENT MAY 2 1893 SDP Photo
HEMINGRAY [080] (F-Skirt) HEMINGRAY/Nº 71 HIGH VOLTAGE (R-Skirt) PATENT MAY 2 1893/MADE IN U.S.A. RDP < WANTED! 
HEMINGRAY [090] (F-Skirt) HEMINGRAY/Nº 71 HIGH VOLTAGE (R-Skirt) PATENTED MAY 2 1893/MADE IN U.S.A. SDP < WANTED! 
HEMINGRAY [100] (F-Skirt) HEMINGRAY/Nº 71 HIGH VOLTAGE/[Blot out under '71'] (R-Skirt) PATENT MAY 2 1893/MADE IN U.S.A. SDP Photo
HEMINGRAY [110] (F-Skirt) HEMINGRAY/Nº 71 HIGH VOLTAGE/[Blot out under '71'] (R-Skirt) PATENTED MAY 2 1893/MADE IN U.S.A. SDP Photo

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

Unverified Embossings
Year Removed
HEMINGRAY [120] (F-Skirt) HEMINGRAY / PATENT MAY 2 1893 (R-Skirt) HIGH VOLTAGE / TRIPLE PETTICOAT / Nº1 SDP 1999





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