The Want List

CD 139 COMBINATION SAFETY  
CD 174 BROOKFIELD  
CD 176 WHITALL TATUM Mushroom
CD 207 B Renault's Patent
CD 243 HEMINGRAY Hemi-88
CD 244 NO EMBOSSING Pomona
CD 250 N.E.G.M.CO. Sim CD 251, no inner skirt
CD 268 THE CROWN  
All photos are from the www.insulators.info and www.nia.org web sites.

References

Crown Jewels of the Wire back issues 9/2000, 3/2002, 12/2002
Audbrey & Penelope Branham's A Collection of Insulator Patents Issued by the United States Patent Office 1851-1885 Parts 1 & 2
Gerald Brown's The Story of Fred M. Locke and His Insulators 1st Supplement
Gerald Brown's The Story of Fred M. Locke and His Insulators 2nd Supplement
Gerald Brown's The Story of Fred M. Locke and His Insulators Revised 2nd Supplement
David Butler's Identification for Glass Insulators, Single Petticoat Threaded Side Tie Styles and Price Sheet
Gary Cranfill & Greg Kareofelas's Collectors Guide for Glass Insulators Price Sheet
Gary Cranfill, Greg Kareofelas, and John Fountain's Dictionary of Glass - Ceramic Insulators Reprint Price Sheet
James Garrity's Cross Arms back issues 02-12/1972, 02-03/1973, 06/1974, 01-07/1975
Elton Gish's Supplement to the Universal Style Chart for Jack Tod's 3rd Edition Porcelain Insulator Guide Book
Steve Goodell's Canadian Insulator Collector all issues Feb 1991 to Dec 1992
Ed Lane's Insulators That Are Worth Collecting
Mark Lauckners's Canadian Insulator Collector all issues May 1994 to Dec 1992
Mark Lauckner's Canadian Railway Communications Insulators 1880-1920
Mark Lauckner's The Hobby of Insulator Collecting
David Lyons's Early Telegraphs
Marcy's The Antique Insulator Finder's Collector's Price Guide
J Mowatt's The Insulator Collector's Guide (Canadian Collectors Series)
Ron & Patti Norton's The Rainbow Riders Trading Post 11/1991 to 12/1997

Baby Signals

ShapePrimary EmbossingEmbossing IndexDescriptionEmbossing
160BROOKFIELD[030]{No NY}(F-Skirt) BROOKFIELD
160CALIFORNIA[010]{Green colors}(F-Skirt) CALIFORNIA
160CALIFORNIA[010]{Aqua-Blue colors}(F-Skirt) CALIFORNIA
160H.G.CO.[005]{Unknown style??}(F-Skirt) H G CO/PATENT MAY 2 1893 {Note no periods} (R-Skirt) PETTICOAT
160H.G.CO.[010]{Old Script}{RDP}(F-Skirt) H.G.CO. (R-Skirt) PETTICOAT
160H.G.CO.[040]{Unknown style??}(F-Skirt) H.G.CO./PATENT MAY 2 1893 (R-Skirt) PETTICOAT
160H.G.CO.[090]{Suspect Stamp}(F-Skirt) H.G.CO./PATENT MAY 2 1893 (R-Skirt) PETTICOET {Note spelling}
160H.G.CO.[095]{Suspect Stamp}(F-Skirt) H.G.CO./PATENT MAY 2 1893 [9 is an upside down G] (R-Skirt) PETTICOAT
160H.G.CO.[120]{Old Script}{"A"}(F-Skirt) H.G.CO./A (R-Skirt) PETTICOAT
160H.G.CO.[150]{Suspect Stamp}(F-Skirt) H.G.CO/PATENT.MAY.2.1893. {Note extra periods} (R-Skirt) PETTICOAT
160HEMINGRAY[005]{Dash 14, # on dome}(Dome) [Number] (F-Skirt) HEMINGRAY-14/[Number] (R-Skirt) MADE IN U.S.A.
160HEMINGRAY[010]{No 14}{RDP}(F-Skirt) HEMINGRAY (R-Skirt) N 14
160HEMINGRAY[085]{Large Lettering}(F-Skirt) HEMINGRAY-14/[Number] (R-Skirt) MADE IN U.S.A.
160HEMINGRAY[090]{Large Lettering?}(F-Skirt) HEMINGRAY-14/[Numbers and dots] (R-Skirt) MADE IN U.S.A.
160HEMINGRAY[120]{Dash 14 with 1893, patent front}(F-Skirt) HEMINGRAY-14/[H.G.CO. blotted out]/PATENT MAY 2 1893 (R-Skirt) MADE IN U.S.A./PETTICOAT
160HEMINGRAY[170]{HEWINGRAY N 14, no blot}(F-Skirt) HEWINGRAY {Note spelling} (R-Skirt) N 14
160LYNCHBURG[010]{RDP}(F-Skirt) /LYNCHBURG (R-Skirt) NO.32/MADE IN [Number] U.S.A.
160MAYDWELL[030]{SB}(F-Skirt) MAYDWELL-14 (R-Skirt) U.S.A.
160MAYDWELL[045]{USA/blotout}(F-Skirt) MAYDWELL-14 (R-Skirt) U.S.A./[Blotted out embossing]
160MAYDWELL[050]{McLauglin blotout}(F-Skirt) MAYDWELL-14/[MLAUGHLIN blotted out] (R-Skirt) U.S.A.
160MCLAUGHLIN[020]{RDP}(F-Skirt) MLAUGHLIN (R-Skirt) N 14
160NO NAME[010]{dot//dot}(F-Skirt) [Glass dot] (R-Skirt) [Glass dot] {K.C.G.W. product}
160NO NAME[020]{dot//number}(F-Skirt) [Glass dot] (R-Skirt) [Number] {Tall narrow dome} {K.C.G.W. product}
160NO NAME[030]{number//blotout}(F-Skirt) [Number] (R-Skirt) [Blotted out embossing] {K.C.G.W. product}
160NO NAME[040]{number/number}(F-Skirt) [Number] (R-Skirt) [Number] {K.C.G.W. product}
160WHITALL TATUM[030]{WT no CO}(F-Skirt) WHITALL TATUM N 14/[Number] (R-Skirt) MADE IN U.S.A.
U-231ANY  ANY
U-233ANY  ANY
U-237ANY  ANY
U-238ANY  ANY
U-240AANY  ANY
U-241ANY  ANY
U-241CANY  ANY
U-239HVIC  HVIC
U-239BN-N N-N (Lima)ANY
U-241BN-N N-N (Pittsburg)Brown

The list here shows all mold and shop numbers I have, as well as years of manufacture. Any that I don't have, I want!

CDs

100.2 100.6 102.4 106.5 109.5 109.7 109.9 110.6 111 113.2
114.2 115.1 116.5 123.2 124.1 124.2 124.5 127.4 130.1 130.2
131.8 132.4 134.6 136.4 136.5 138.2 138.9 139 139.8 140.5
141.5 141.6 141.7 141.8 141.9 143.6 145.5 145.6 146.4 146.5
148 152.2 154.7 155.6 156.2 158.1 158.2 158.9 160.4 164.4
168.5 168.6 174 174.5 175.5 176 176.9 178.5 180.5 181.5
184 185.2 186.1 186.2 192.1 194.5/195.5 196.2 196.5 203.2 205.5
206.5 207 207.5 226.3 228.5 229.6 232.1 232.2 234.5 238.1
238.2 238.6 239.2 240.2 243 244 244.5 245.2 247.3 250
265.1 268 268.5 271 286.9 292.5 293.1 299.1 299.2 299.7
301.2 301.5 303.5 309 309.5 313 313.1 316 317 317.5
317.7 317.8 317.9 318 326 328 328.2 330 338 342
1025 1030 1034 1037 1038 1040 1042 1045 1046 1050
1057 1073 1074 1080 1103 1106 1129 1130 1131 1145
1180 1182 1190

Primary Embossings

AYALAB.C.DRIPB.F.G.CO.
BARCLAYBEAL'SBUZBY
CANADACHAMBERSCHESTER
CIN COMCLIMAXCOMBINATION SAFETY
CRISACRISOL TEXCOCOCROWN
CTCDERFDIAMOND P
E.S.G.CO.E.S.S.CO.EMMINGER'S
FLUID INSULATORG.N.R.G.P.R.
GREAT NORTHWESTERNGREELEYH.G.W.
HARLOEJEFFREY MFG.CO.JOHNSON & WATSON
JUMBOKKNAPP
LAWRENCE GRAYM.& E.CO.MIN COM
MINE INSULATORN DE MNO NAME - MEXICO
PAISLEYPAT APP FORPAT'D
PONYRUIZSANTA ANA
SEILERSSTANDARDTWIGGS
V.B.W.U. 

Insulators with the following Patent Dates

Date On InsulatorPatent DateInventorTitleDescription
2/20/18702/22/1870  Embossing Error -- should be 02-22-70. CD 126 BROOKFIELD & CD 102 PAT - OTHER
3/20/18702/20/1877  Embossing Error -- should be 03-20-77. CD 126 BROOKFIELD
3/25/18703/25/1870  Unattributed. CD 102 PAT - OTHER
4/4/18704/4/1871  Embossing Error -- should be 04-04-71. CD 127 BROOKFIELD
7/26/18707/26/1870Oakman, SamuelInsulatorInsulator with Slotted Pinhole. CDs 728.8, 796
4/4/18714/4/1871Brookfield, W.Mode of Making Telegraph InsulatorsMode of making telegraph insulators. CD 127 BROOKFIELD
2/20/18722/20/1872Emminger, David R.P.Improvement in Telegraph InsulatorsPrevent accumulation of dust and dirt on surface, reduce the points of contact with the conducting wire. CD 141.9
10/12/187210/15/1872  Embossing Error -- should be 10-15-1872 (4 segments). CD 158 PAT - OTHER
10/15/187210/15/1872Oakman, SamuelImprovement in Formers for Segmentally Screw-Threaded InsulatorsSegmented thread insulator (4 segments). CDs 145.6, 158.2
2/6/18772/6/1877Seiler, PaulTelegraph InsulatorWire groove composed of projections. CD 130.2
3/22/18773/20/1877  Embossing Error -- should be 03-20-77. CD 126 BROOKFIELD
8/14/18778/14/1877Chambers, JosephLightning-Rods and InsulatorsInsulator for lightning rod. CD 124.5, 317, 317.5 CHAMBERS
1/25/18791/25/1870  Embossing Error -- should be 01-25-70. CD 126 BROOKFIELD
2/22/18792/22/1870  Embossing Error -- should be 02-22-70. CD 126 BROOKFIELD
2/12/18812/12/1884  Embossing Error -- should be 02-12-84. CD 145 BROOKFIELD
7/1/18827/1/1882  a "Patent Applied for" date embossed on some CD 116 Hemingray made pieces -- to our knowledge no actual patent was granted. CD 116 A.U., DEC 19 1871, PAT - OTHER
8/14/18838/14/1883Johnson, MathewApparatus for Making Glass InsulatorsHand press for making insulators. CD 120, 133.1 BROOKE's
1/29/18841/29/1884  Unattributed. CD 145 AM INS. CO.
2/15/18842/12/1884  Embossing Error -- should be Feb 12, 1884. CD 160.7 AM INS CO
8/11/18858/11/1885Pennycuick, James GMethod of Forming Screw Threads on GlassMethod of forming threads in glass. CD 134 DIAMOND-P
5/7/18895/7/1889Heaviside, A.W.Electric Wire InsulatorCD 1182 PAT - OTHER
5/6/18905/6/1890Buzby, J. F.InsulatorNo Tie Design. CD 141.8 BUZBY
12/23/189012/23/1890Foree BainElectric InsulatorRidges around outside of skirt to increase leak distance. CD 144 PAT - OTHER
4/30/18914/30/1901Locke, Fred M. Locke CD 342. --> EMBOSSING ERROR? Should be April 30, 1901
6/17/18936/17/1890  Embossing Error -- should be 06-17-90. CD 257 HEMINGRAY
8/8/18938/8/1893Gray, L.B.InsulatorStandard CD 268.5
8/29/18938/29/1893Blackburn, GeorgeInsulatorA block of insulating material with a bail shaped clamping lever adpated to receive a line wire. CD 141.6 PAT - OTHER
9/25/18949/25/1894Osyor, DavidConductor Support and InsulatorJeffrey Mine Insulator. CD 185 JEFFREY MFG CO
4/7/18964/7/1896Rappleye, Hannibal WInsulatorMethod of attaching line wire. CD 134.6 BROOKFIELD
5/22/18965/22/1894  Embossing Error -- should be 05-22-94. LOCKE CDs 286, 300, 318, 319
5/24/189611/24/1896  Embossing Error -- should be 11-24-96. CD 300 LOCKE
11/2/189611/24/1896  Embossing Error -- should be 11/24?6/96. CD 342 LOCKE
11/24/189611/24/1896  CD 342 LOCKE High Tension Insulator
12/15/189612/15/1896  Outside shell more puncturable than inner. CD 342 LOCKE
09/28/189709/28/1897  Oblong skirt w/side troughs. CD 342 LOCKE
06/07/189806/07/1898  Sleeve to protect pin. CD 342 LOCKE
12/15/189812/15/1896  Embossing Error -- should be 12-15-96. CD 297 LOCKE
3/21/18993/21/1899Harloe and BloesInsulator3 finger type wire attachment. CD 109.5, 206.5 HARLOE
5/2/18995/2/1899  CD 121 HEMINGRAY
10/10/189910/10/1899Beal, CarrollInsulated Support for Electric WiresInsulator for mounting under cross arm. CD 309 BEAL'S
3/12/19013/12/1901Harloe, MortonInsulator for Electric WiresTwo piece insulator. CD 109.5, 206.5 HARLOE
04/30/190104/30/1901  Design. CD 342 LOCKE
4/29/19024/29/1902Locke, Fred M.Sleeve for Protecting Insulator PinsLocke CD 342 -- sleeve to protect pin. CD 342 LOCKE
6/10/19026/10/1902Converse, Vernon G.InsulatorHigh voltage insulator in seperately manufactured parts CD 317.8 PAT - OTHER
12/9/190212/9/1902Harloe, MortonInsulatorSaddle groove formed by 3 alternating projections. CD 109.5, 206.5 HARLOE
4/26/19044/26/1904Cutter, ScottInsulatorTree insulator. CD 1038 CUTTER
8/29/19058/29/1905Twiggs, WilliamInsulatorNo Tie Design. CD 141.7 TWIGGS
3/31/19143/31/1914Locke, Fred M.InsulatorGlass composition. LOCKE CDs 178.5, 241, 247.3
2/2/19152/2/1915Locke, Fred M.Manufacture of High-Potential Porcelain and Glass InsulatorsLOCKE CDs 178.5, 241, 247.3
10/12/191510/12/1915Locke, Fred M.Manufacture of Insulators for High-Potential Electric ConductorsLOCKE CDs 241, 247.3
5/27/19195/27/1919Roberts, OmerInsulatorBase slides on peg, cap screws on. PYREX CDs 348, 311
4/9/19294/9/1929Wilson, Leon T.Low Loss InsulatorLow Loss Design. CD 176 WHITALL TATUM

NOTE: Items in gray are rather expensive, and are less likely to be able to be obtained.
Last Updated: 04/01/2015