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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '174') AND (category.subclass = '189') ORDER BY date ASC, patent, type

Total of 80 patents found where: Class is '174'; Subclass is '189';

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T / S Patent Date Description Patentee Category Assigned To
 1864
U Specimen known 45,221 November 29, 1864 Improvement in Insulators for Telegraph Wires
Hook cemented in glass with metal covering (see reissue 2,717 on 8-6-1867)		 BROOKS, David
 Hook  
 1892
U 466,391 January 5, 1892 Insulator
Cylinder of wood used for trolley wire hanger		 ANDREWS, William S.
 Wood The Edison General Electric Co.
 1894
U Specimen known 522,175 June 26, 1894 Insulator
Self-tying with metal cap screws down on two metal ears to hold wire		 ANDERSEN, Johan M.
 Self-tying Miscellaneous 1/2 to Albert Anderson
 1899
U Specimen known 628,667 July 11, 1899 Insulated Rail Support
Third rail type (see stoneware specimen in 1989 CJ)		 KING, Charles K.
MEAD, George A.
 Third Rail  
 1901
U 678,195 July 9, 1901 Third Rail Insulator
Third rail insulator with iron mounting bracket and cap to support the rail		 POTTER, William B.
 Third Rail General Electric Co.
 1910
U 946,623 January 18, 1910 Insulator for Electric lines
Metal cap cemented on crown to hold wire in crown or side groove		 VARNEY, Theodore
 Cap Westinghouse Electric & Mfg. Co.
U 974,672 November 1, 1910 Insulator
Suspension insulator		 JOHNSTON, Robert M.
 Suspension The Ohio Brass Co.
 1916
U 1,170,287 February 1, 1916 Method of Making Insulators
Suspension cementing method (high temp and humidity)		 LAPP, John S.
 Suspension Locke Insulator Mfg. Co.
 1917
U 1,242,907 October 16, 1917 Insulator
Suspension cap and pin to improve strength of connection		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1918
U 1,281,268 October 15, 1918 Insulator
Suspension cap and pin to improve strength of connection		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U Specimen known 1,284,975 November 19, 1918 Sanded Insulator and Method of Making Same
Multipart and suspension sanded joints (see 1,536,749)		 AUSTIN, Arthur O.
 Multipart The Ohio Brass Co.
U Specimen known 1,284,976 November 19, 1918 Insulator
Multipart and suspension cemented metal part designs		 AUSTIN, Arthur O.
 Multipart The Ohio Brass Co.
 1919
U 1,291,217 January 14, 1919 Adjustable Suspension Insulator
Suspension disk with adjustable length pin to equalize the potential across each disk to reduce arc-over		 SONNEBORN, Sol S.
 Suspension  
U 1,291,713 January 21, 1919 Separable Part Insulator
Multipart (& suspension) with cemented, threaded metal shells screwed together		 AUSTIN, Arthur O.
 Multipart The Ohio Brass Co.
 1920
U Specimen known 1,329,770 February 3, 1920 Insulator
Suspension type for J-D		 JOHNSTON, Robert M.
 Suspension Jeffery-Dewitt Co.
U Specimen known 1,360,352 November 30, 1920 Insulator
Suspension sanded under cap and pin to improve cement adhesion		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1923
U 1,468,042 September 18, 1923 Column Strain Insulator
Electrose strain insulator		 STEINBERGER, Louis
 Strain  
U 1,477,800 December 18, 1923 Connecting Joint
Cementing procedure using elastic and sanded cement joint		 AUSTIN, Arthur O.
 Cement The Ohio Brass Co.
 1924
U 1,481,080 January 15, 1924 Insulator
Antenna or guy strain insulator consisting of a bar of porcelain with longitudinal ribs and metal caps on the ends		 AUSTIN, Arthur O.
 Antenna The Ohio Brass Co.
U 1,489,689 April 8, 1924 Insulator
Suspension with ribbed pin and cap for better adhesion of cement		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,489,690 April 8, 1924 Insulator and Method of Assembling the Same
Suspension with sanded joints & soft coating for better adhesion of cement		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,489,809 April 8, 1924 Insulator
Suspension with ribbed sheet metal in pin and cap for better adhesion of cement		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,490,080 April 15, 1924 Insulator
Suspension with ribbed pin and cap & notched cap for better adhesion of cement		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1925
U 1,521,743 January 6, 1925 Insulator
Suspension arcing horn system and insulator (see 1,552,664 and 1,783,271)		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,552,663 September 8, 1925 Insulator Cap
Metal cap for suspension insulator disks		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,556,029 October 6, 1925 Method of Connecting Insulator Units
Suspension, card used to keep cement off top surface around cap		 REAGAN, Frank H.
 Suspension Locke Insulator Corp.
 1926
U 1,590,381 June 29, 1926 Insulator Cap
Iron insulator cap cemented to top of insulator to support electrical equipment		 KERR, Benjamin W.
 Cap Railway and Industrial Engineering Co.
 1927
U 1,617,154 February 8, 1927 Insulator
Suspension with metal eye-bolt pin and cap with special securing clips		 GOUVERNEUR, Minor F. H.
 Suspension Locke Insulator Corp.
U 1,654,047 December 27, 1927 Strain Insulator
Strain insulator with steel covering whereby the porcelain insulator is in compression		 LAPP, John S.
 Strain Lapp Insulator Co.
 1928
U 1,684,066 September 11, 1928 Insulator
Suspension with metal and porcelain shaped to conform with electric field		 MINOR, Douglas F.
 Suspension Westinghouse Electric & Mfg. Co.
U 1,684,441 September 18, 1928 High Tension Insulator
Suspension with special ribbed cap and pin		 GOUVERNEUR, Minor F. H.
 Suspension Locke Insulator Corp.
 1929
U Specimen known 1,716,963 June 11, 1929 Insulator
Suspension coupling device (see 1,329,770)		 JOHNSTON, Robert M.
 Suspension Jeffery-Dewitt Co.
U 1,719,945 July 9, 1929 Insulator
Suspension with cutout metal cap and split spring metal eye-pin		 SCHOENTHALER, George Henry
 Suspension Locke Insulator Corp.
U 1,737,749 December 3, 1929 Insulator
Suspension with reinforcing band around cap and ribbed pin		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,739,637 December 17, 1929 Insulator
Multipart porcelain pedestal insulator with threaded holes in the metal cap to bolt another insulator on top		 HAWLEY, Kent A.
 Pedestal Locke Insulator Corp.
 1930
U 1,758,462 May 13, 1930 Insulator
Multipart cementing technique using Portland cement with a resilient alumina cement followed by a high humidity curing process		 OSBORNE, David Henry
 Multipart Electric Service Supplies Co.
U 1,778,152 October 14, 1930 Multiple Skirt Suspension Insulator
Odd two-disk suspension made in one piece with metal caps on each end		 HAWLEY, Kent A.
 Suspension Locke Insulator Corp.
U 1,778,176 October 14, 1930 Insulator
Suspension design using soft metal liner to prevent strain between cap and insulator		 VAN ATTA, Cloyd A.
 Suspension Locke Insulator Corp.
 1931
U 1,790,273 January 27, 1931 Insulator
Wireholder with internal threaded metal core to receive a threaded shank that can be fixed to a wall		 LEE, Leffman H.
 Wireholder  
U 1,819,748 August 18, 1931 Insulator
Suspension of the cap and pin design specially designed to make a strong joint for the cap and pin		 HAWLEY, Kent A.
OSBORNE, David H.
 Suspension Locke Insulator Corp.
U 1,822,485 September 8, 1931 Insulator
Method of attached metal cap and pin to suspension insulators		 HAWLEY, Kent A.
 Suspension Locke Insulator Corp.
 1932
U 1,841,949 January 19, 1932 Insulator With Caps
Steel cap cemented to top of insulator with bolts for stacking insulators		 HAWLEY, Kent A.
 Miscellaneous Locke Insulator Corp.
U 1,848,622 March 8, 1932 Insulator
Suspension rod with metallic shields to keep upper and lower parts dry to prevent electrical leakage		 GOUVERNEUR, Minor F. H.
 Suspension Locke Insulator Corp.
U 1,851,671 March 29, 1932 High Tension Insulator
Suspension insulator with metal attachments fixed with zinc, lead/antimony alloys		 JOHNSTON, Robert M.
MCLACHLAN, Alexander
 Suspension  
U 1,868,479 July 26, 1932 Compensating Strut Type Insulator
Suspension insulator cap and pin with special rings to aid strength of cement joint		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1933
U 1,937,620 December 5, 1933 Insulator
Suspension cap and pin designed to improve and strengthen the cement joint		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1934
U 1,944,134 January 16, 1934 Insulator Assembling Machine
Machine to press on and turn cap to secure the cement and cement in the metal pin		 ROBERTSON, John Cullen
 Manufacturing Locke Insulator Corp.
U 1,950,646 March 13, 1934 Insulator
Iron cap cemented on the top of an insulator for switch connection		 AUSTIN, Arthur O.
 Cap The Ohio Brass Co.
U 1,958,880 May 15, 1934 Suspension Insulator
Suspension insulator cap and pin design to reduce stress (see 1,822,485)		 ARNOLD, Edwin E.
 Suspension Westinghouse Electric & Mfg. Co.
U 1,960,147 May 22, 1934 Insulator and Method of Treating It
Suspension, glass under cap is etched & treated with graphite		 FULCHER, Gordon S.
 Suspension Corning Glass Works
U 1,961,402 June 5, 1934 Insulator
Catenary trolley wire support composed of multiple insulator sections with cemented caps and internal threaded parts allowing them to be screwed together		 TAYLOR, John J.
 Catenary The Ohio Brass Co.
U 1,972,614 September 4, 1934 Insulator
Cementing and design technique to improve cement joint in cap and pin suspension and equipment support insulators		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,975,297 October 2, 1934 Insulator
Suspension disk strengthen by acid etching glass under cap		 SHAVER, William W.
 Suspension Corning Glass Works
U 1,979,092 October 30, 1934 Insulator
Suspension cap and pin designed with slipping cement joints to improve strength		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,981,717 November 20, 1934 Insulator
Suspension cap and pin designed to improve strength of cement joint		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1935
U Specimen known 1,988,369 January 15, 1935 Radio Interferenceproof Insulator
Metal cap cemented into recessed formed in top of pin type insulator		 BROWN, Harold H.
 Metal Locke Insulator Corp.
U 1,994,265 March 12, 1935 Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,994,266 March 12, 1935 Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,994,292 March 12, 1935 Insulator
Special design of pin for suspension insulator		 TAYLOR, John J.
 Suspension The Ohio Brass Co.
U 1,997,439 April 9, 1935 Insulator
Special design of cemented pin and cap on pin-type insulator used to support electrical equipment		 TAYLOR, John J.
 Miscellaneous The Ohio Brass Co.
U 2,008,341 July 16, 1935 High Tension Insulator
Suspension disk with additional cement in pinhole with asphalt coating		 STROUP, Charles L.
 Suspension Jeffery-Dewitt Insulator Co.
U 2,008,342 July 16, 1935 Insulator
Suspension disk with metal spider cap over crown cemented in porcelain		 STROUP, Charles L.
 Suspension Jeffery-Dewitt Insulator Co.
U 2,008,414 July 16, 1935 Insulator
Suspension cementing procedure		 FISCHER, Eugene H.
 Suspension  
 1936
U 2,043,523 June 9, 1936 Insulator
Suspension disk using metal malleable liner to aid cement expansion under the metal cap		 VAN ATTA, Cloyd B.
 Suspension Locke Insulator Corp.
 1937
U 2,072,201 March 2, 1937 Insulator and Method of Making It
Suspension, glass, coat crown with graphite prevents cement adhesion		 DIBBLE, Clarence H.
 Suspension Corning Glass Works
U Specimen known 2,089,791 August 10, 1937 Method of Making Electrical Insulators
CD 240.2, method of making insulator described in 2,191,152		 HAMMEL, Victor F.
 Insulator  
 1938
U 2,135,326 November 1, 1938 Method of Assembling Electric Insulators
Method of cementing metal cap on a suspension insulator to prevent excess cement at the joint and thus preventing electrical discharge from the excess cement		 CALLAND, Otho G.
 Suspension The Ohio Brass Co.
 1939
U 2,144,537 January 17, 1939 Insulator Construction
Metal end cap for post insulator		 JENNER, Ralph L.
 Post Type Lapp Insulator Co., Inc.
U 2,146,344 February 7, 1939 Electric Insulator
Suspension cementing technique to reduce damage from expansion		 MEISSE, Louis A.
 Suspension The Ohio Brass Co.
U 2,173,292 September 19, 1939 Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
 1940
U Specimen known 2,191,152 February 20, 1940 Electrical Insulator
CD 240.2 with metal saddle embedded in crown for RFI (see 2,089,791)		 HAMMEL, Victor F.
 Insulator  
 1942
U Specimen known 2,287,976 June 30, 1942 Insulator
Glaze - compression glaze & sand joint		 CROSKEY, Carl D.
ROWLAND, Davidge H.
 Glaze Locke Insulator Corp.
 1945
U 2,383,090 August 21, 1945 Electric Insulator
Suspension insulator with improved cementing methods		 TOROK, Julius J.
 Suspension Corning Glass Works
 1962
U Specimen known 3,024,303 March 6, 1962 Glazed Insulator Which Comprises a Ceramic Body and a Primary Coat Under the Glaze Which has a Lower Coefficient of Thermal Expansion than the Ceramic Body
Suspension insulator with compression glaze coating under outer glaze surface		 SMOTHERS, William J.
SELSING, Jorgen
 Suspension The Ohio Brass Co.
 1969
U 3,444,314 May 13, 1969 Suspension Insulator Having a Cap With Internal Load Transmitting Surfaces
Suspension metal cap designed with steps to aid in holding cement on insulator		 VAN TUYL, Thomas Oliver
 Suspension  
 1975
U 3,923,570 December 2, 1975 Manufacture of Insulators
Method of cementing suspension insulators using thick cement and high intensity vibrations		 WILLEM, Michel
 Suspension Societe Europeene d'Isolateurs en Verre (SEDIVER)
 1987
U 4,658,092 April 14, 1987 Explosion Preventing Suspension Insulator
Suspension insulator using cement to prevent damage to insulator from expansion		 NAKAMURA, Itsushi
MORI, Shigeo
 Suspension NGK Insulators, Ltd.
 1988
U 4,782,198 November 1, 1988 Suspension Insulators
Suspension (porcelain) with glazed head for cementing metal cap		 MORIYA, Tsutomu
SHINOKUBO, Hiroyuki
 Suspension NGK Insulators, Ltd.
U 4,782,199 November 1, 1988 Insulators Having Improved Steep Wave Front Characteristics
Suspension, head treated with special glaze to strengthen cap/cement		 SEIKE, Shoji
TOTOKI, Takao
MIMA, Toshiyuki
 Suspension NGK Insulators, Ltd.
 1989
U 4,814,551 March 21, 1989 Anticorrosive Insulator
Suspension (anticorrosive), cementing metal cap for DC service (Japan)		 WATANABE, Akihiro
MORI, Shigeo
 Suspension NGK Insulators, Ltd.

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