Hemingray Insulator Profile: CD 190/191  
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Hemingray manufactured this popular two-piece transposition style insulator. Transposition styles were used for swapping the positions of two lines. This would reduce the interference that would otherwise be caused by two lines running parallel to each other for too long a distance. Hemingray also manufactured these for Am. Tel. & Tel. Co. 

Dimensions: 4 3/8" H x 3 5/8" W
Primary
Embossings: 		• AM. TEL. & TEL. CO.
• HEMINGRAY
• TWO PIECE TRANSPOSITION
Years Produced:
c.1910s-1930s
Style Number:50
Trade Name: Two Piece Transposition
Embossings Collapse
 
AM. TEL. & TEL. CO. Unlisted {191 Top} {Unverified} {190 Bottom} (F-Skirt) AM TEL & TEL CO {'A' is missing middle bar} {Note no periods} (R-Skirt) TWO PIECE / TRANSPOSITION SB Photo
AM. TEL. & TEL. CO. [010] {191 Top} (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) TWO PIECE / TRANSPOSITION {190 Bottom} (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) TWO PIECE / TRANSPOSITION SB Photo
AM. TEL. & TEL. CO. [015] {191 Top} (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) TWO PIECE / TRANSPOSITION {190 Bottom} (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) TWO PIECE / TRANSPOSITION / ['TON' blotted out] {Blot out on base only} SB < WANTED! 
AM. TEL. & TEL. CO. [020] {191 Top} (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) TWO PIECE / TRANSPOSITON {Note spelling} {190 Bottom} (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) TWO PIECE / TRANSPOSITON {Note spelling} SB < WANTED! 
HEMINGRAY Unlisted {191 Top} {Unverified} {190 Bottom} (F-Skirt) HEMINGRAY 50 {Note no dash} (R-Skirt) MADE IN U.S.A. SB Photo
HEMINGRAY [010] {191 Top} (F-Skirt) HEMINGAY - 50 {Note spelling} (R-Skirt) MADE IN U.S.A. {190 Bottom} (F-Skirt) HEMINGAY - 50 {Note spelling} (R-Skirt) MADE IN U.S.A. SB < WANTED! 
HEMINGRAY [020] {191 Top} (F-Skirt) HEMINGRAY (R-Skirt) Nº 50 {190 Bottom} (F-Skirt) HEMINGRAY (R-Skirt) Nº 50 SB Photo
HEMINGRAY [030] {191 Top} (F-Skirt) HEMINGRAY - 50 (R-Skirt) MADE IN U.S.A. {190 Bottom} (F-Skirt) HEMINGRAY - 50 (R-Skirt) MADE IN U.S.A. SB - 
HEMINGRAY [040] {191 Top} (F-Skirt) HEMINGRAY - 50/[Numbers and dots] (R-Skirt) MADE IN U.S.A./[Number] {190 Bottom} (F-Skirt) HEMINGRAY - 50/[Numbers and dots] (R-Skirt) MADE IN U.S.A./[Number] CB - 
HEMINGRAY [050] {191 Top} (F-Skirt) HEMINGRAY - 50/[Numbers and dots] (R-Skirt) MADE IN U.S.A./[Number] {190 Bottom} (F-Skirt) HEMINGRAY - 50/[Numbers and dots] (R-Skirt) MADE IN U.S.A./[Number] SB Photo
HEMINGRAY [060] {191 Top} (F-Skirt) HEMINGRAY - 50/[Numbers] (R-Skirt) MADE IN U.S.A. {190 Bottom} (F-Skirt) HEMINGRAY - 50/[Numbers] (R-Skirt) MADE IN U.S.A. SB Photo
HEMINGRAY [070] {191 Top} (F-Skirt) HEMINGRAY - 50 (R-Skirt) MADE IN U.S.A./['Nº 50' blotted out] {190 Bottom} (F-Skirt) HEMINGRAY - 50 (R-Skirt) MADE IN U.S.A./['Nº 50' blotted out] SB Photo
TWO PIECE TRANSPOSITION [010] {191 Top} (F-Skirt) TWO PIECE/TRANSPOSITION (R-Skirt) ['AM.TEL.&TEL.CO.' blotted out] {190 Bottom} (F-Skirt) TWO PIECE/TRANSPOSITION (R-Skirt) ['AM.TEL.&TEL.CO.' blotted out] SB < WANTED! 
TWO PIECE TRANSPOSITION [020] {191 Top} (F-Skirt) TWO PIECE/TRANSPOSITION {190 Bottom} (F-Skirt) TWO PIECE/TRANSPOSITION SB Photo
TWO PIECE TRANSPOSITION [030] {191 Top} (F-Skirt) TWO PIECE/TRANSPOSITON {Note spelling} {190 Bottom} (F-Skirt) TWO PIECE/TRANSPOSITON {Note spelling} SB < WANTED! 
TWO PIECE TRANSPOSITION [040] {191 Top} {Unverified} {190 Bottom} (F-Skirt) TWO PIECE/TRANSPOSITION (R-Skirt) [Blotted out embossing] SB < WANTED! 
Embossings Removed from Price Guides
Year Removed


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