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CD 152
Hemingray №40
  • Brookfield Style Mold
    This is the [085] "Brookfield style" mold variation, named so because its features resemble the molds produced by Brookfield. Note the squarer crown, smaller wire groove lips, and steeper sloped skirt.
  • [090] Extended Skirt Variant
    This unusual variant with an extended inner skirt and smooth base was assigned its own CD number in 2007 (CD 152.2). In 2019, it reverted back to being CD 152 Hemingray [090].
Insulator Facts

Dimensions:4" H × 3 1⁄2" W
Primary Embossing:The Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
HEMINGRAY
Years Produced: c.1910-1921
Style Identifier:Hemingray often used style numbers, letters, words, or a combination to differentiate their insulator styles (such as: T.S., E2, № 1 Provo Type, Muncie Type, etc.) These are often, but not always, embossed on the insulator.
40
Rarity Scale 0. No specimens known
1. Extremely Common (millions known)
2. Very Common
3. Common
4. Fairly Common
5. Uncommon
6. Very Uncommon
7. Rare (dozens known)
8. Very Rare (less than a dozen known)
9. Extremely Rare (2 or 3 known)
10. Unique (only one known)
Extremely Common (1/10)*
Usage: Telegraph
Trade Name: Double Petticoat, New W.U. Standard
Hobby Nickname: Hoopskirt
Voltage Rating: 5,000 Volts
Value Range: This is an estimated value range only, based on historical hobby collecting data. Insulator values vary widely depending on many factors, including embossing, color, condition, mold variations, manufacturing anomalies, and other attributes. Please visit the Hemingray Values page for more information.
$1-1500*
* Please Note: This insulator style is one of Hemingray's most common insulators. Please visit the Common Hemingrays page for more information.
Insulator Overview

The Hemingray №40 was a very common and popular style, and was mass produced in aqua and green colors. In c.1910, an experiment with AT&T to produce a new standard insulator resulted in this design being selected. It was produced in mass quantities until 1921, when the Hemingray №40 was replaced by the extremely popular Hemingray - 42 (CD 154).

Related Links:
Known Embossings (14)
Primary EmbossingThe Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
EINThe Embossing Index Number (EIN) is a unique number assigned by the collecting hobby to each distinct embossing for an insulator design. It is normally shown in brackets, e.g. [050].
EmbossingMost common terms:
(F-Skirt): Front Skirt
(R-Skirt): Rear Skirt
/: New line of embossing
{}: Special note (not embossed on the insulator)
[#]: Represents a number

Other terms:
{MLOB}: Mold Line Over Base
(F-Crown): Front Crown
(R-Crown): Rear Crown
(F-Umbrella): Front Umbrella
(R-Umbrella): Rear Umbrella
BaseThe base is the bottom of the insulator. Hemingray made 4 different types of bases:

1. SDP: Sharp Drip Points
2. RDP: Round Drip Points
3. CB: Corrugated Base
4. SB: Smooth Base
Year AddedThis is the year that this embossing was officially recognized and added to the McDougald (1991-2008) or Briel (2011-2023) insulator price guides. It is not necessarily the year this embossing was discovered.
Photo
Status = In my collection

If the value in this column says WANTED, then that specific insulator is on my wanted list! If you have that insulator and would like to sell it, click on the WANTED link to submit photos and contact me.
HEMINGRAY [010] (Dome) ['4', '5', '7' or '8'] (F-Skirt) HEMINGRAY (R-Skirt) № 40 SDP - Photo
HEMINGRAY [015] (Dome) {Small 5 rotated inside of a large 7} (F-Skirt) HEMINGRAY (R-Skirt) № 40 SDP - No Photo-
HEMINGRAY [020] (Dome) ['4', '5', '7' or '8'] (F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) № 40 SDP - No Photo-
HEMINGRAY [030] (F-Skirt) HEMINGRAY (R-Skirt) № 40 SB - No PhotoWANTED
($300 Reward)
HEMINGRAY [040] (F-Skirt) HEMINGRAY (R-Skirt) № 40 SDP - Photo
HEMINGRAY [050] (F-Skirt) HEMINGRAY (R-Skirt) № : 40 or № 40: {Comes with several punctuation variations, with dots or dashes on front or rear skirt} SDP - Photo
HEMINGRAY [060] (F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) № 40 SDP - Photo
HEMINGRAY [070] (F-Skirt) HEMINGRAY/№ 40 (R-Skirt) HEMINGRAY SDP - Photo
HEMINGRAY [075] (F-Skirt) HEMINGRAY/№ 40 (R-Skirt) PATENTED/MAY 2 1893 RDP - Photo
HEMINGRAY [080] (F-Skirt) HEMINGRAY/№ 40 (R-Skirt) PATENTED/MAY 2 1893 SDP - No Photo-
HEMINGRAY [082] (F-Skirt) HEMINGRAY/№ [Backwards '40'] 40 {A faint [Backwards 40] between '№' and '40'} (R-Skirt) PATENTED/MAY 2 1893 SDP 2019 No Photo-
HEMINGRAY [085] (F-Skirt) HEMINGRAY/№ 40 (R-Skirt) PATENTED/MAY 2 1893 {Brookfield style} SDP - Photo
HEMINGRAY [090] (F-Skirt) HEMINGRAY/№ 40 (R-Skirt) PATENTED/MAY 2 1893 {Inner skirt is extended about 3/8"} {Previously CD 152.2}
Note: This unusual variant with an extended inner skirt and smooth base was assigned its own CD number in 2007 (CD 152.2). In 2019, it reverted back to being CD 152 Hemingray [090].
SB - PhotoWANTED
($500 Reward)
HEMINGRAY [100] (F-Skirt) HEMINGRAY/·№·40· or № ·· 40 (R-Skirt) PATENTED/MAY 2 1893 {Comes with several punctuation variations, with dots or dashes on front or rear skirt} SDP - Photo
Removed Embossing

The following embossing(s) were removed from the price guide because they could not be verified to exist, were consolidated with other embossings, or were otherwise ambiguous/inaccurate. They are preserved here for historical purposes.


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Primary EmbossingThe Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
EINThe Embossing Index Number (EIN) is a unique number assigned by the collecting hobby to each distinct embossing for an insulator design. It is normally shown in brackets, e.g. [050].
EmbossingMost common terms:
(F-Skirt): Front Skirt
(R-Skirt): Rear Skirt
/: New line of embossing
{}: Special note (not embossed on the insulator)
[#]: Represents a number

Other terms:
{MLOB}: Mold Line Over Base
(F-Crown): Front Crown
(R-Crown): Rear Crown
(F-Umbrella): Front Umbrella
(R-Umbrella): Rear Umbrella
BaseThe base is the bottom of the insulator. Hemingray made 4 different types of bases:

1. SDP: Sharp Drip Points
2. RDP: Round Drip Points
3. CB: Corrugated Base
4. SB: Smooth Base
Year Removed
n/a
Known Colors (21)
ColorThe color of the insulator.
Aqua
Aqua w/ Amber Swirls
Blue
Blue Aqua
Dark Aqua
Dark Hemingray Blue
Dark Olive Green
Dark Yellow Green
Emerald Green
Green
Hemingray Blue
Jade Aqua Milk
Light Aqua
Light Blue Aqua
Light Green
Light Green Aqua
Light Sage Green
Milky Aqua
Olive Amber
Olive Green
Sage Green