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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 = '200') ORDER BY date ASC, patent, type

Total of 55 patents found where: Class is '174'; Subclass is '200';

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T / S Patent Date Description Patentee Category Assigned To
 1869
U Specimen known 96,198 October 26, 1869 Improvement in Insulator for Telegraph Wires
Rubber sleeve over pin for threadless insulator		 BUSH, Charles A.
 Rubber 2/3 to Henry Ostrum, Clifford Bush
 1871
U 115,521 May 30, 1871 Improvement in Insulators for Telegraph Wires
Threadless insulator with metal thimble cemented in pinhole		 READ, Horatio
 Thimble 1/2 to B. B. Hagerty
 1880
U 228,077 May 25, 1880 Telegraphic and Telephonic Insulator
Wooden insulator with paper thimble and covering		 JOBBINS, William F.
 Wood  
 1882
U 268,075 November 28, 1882 Noise Deadening Insulator
Rubber plug or thimble inserted in pinhole		 BROWN, Gouverneur M.
 Rubber  
 1892
U 472,529 April 12, 1892 Insulator Support
Pin (metal) with wooden cob for glass insulators		 DOREN, Dennis
 Pin  
U Specimen known 476,813 June 14, 1892 Porcelain Insulator
U-141, pin type insulator with cemented metal thimble. Patent was owned by Pass & Seymour.		 PASS, James
SEYMOUR, Albert P.
 Insulator  
 1896
U 554,664 February 18, 1896 Means for Supporting and Insulating Electric Conductors
Pin coated with water repelling material		 ECKERT, Thomas T.
 Pin  
U Specimen known 573,092 December 15, 1896 Insulator
Insulator of two materials combined		 LOCKE, Fred M.
 Insulator  
 1898
U 600,607 March 15, 1898 Insulator Support for Electrical Conductors
Bracket with supporting strap for crossarm		 BENEDICT, Fred
 Bracket  
 1900
U 648,057 April 24, 1900 Third Rail Insulator
Third rail insulator designed to allow insulator to rise and fall with movement of the rail.		 RICE, JR, Edwin W.
 Third Rail General Electric Co.
 1905
U 783,230 February 21, 1905 Insulator Support
Steel pin supporting Electrose cover composed of threads and gutter at the bottom for transmitting water away from pin		 STEINBERGER, Louis
 Pin  
U 786,690 April 4, 1905 Multiple Hood Insulator
Electrose multipart pin type (Brown p. 70)		 STEINBERGER, Louis
 Electrose  
U 789,573 May 9, 1905 Insulator
Self-tying with metal screw plug in top of crown		 STEINBERGER, Louis
 Self-tying Miscellaneous  
 1906
U 821,746 May 29, 1906 Insulator
Pin - method of cementing into insulator sleeve and attaching to insulator		 RICHARD, Augusto
 Pin Societa Ceramica Richard-Ginori
 1907
U Specimen known 852,730 May 7, 1907 Insulator
U-957, broad skirt extending to crossarm with small threaded porcelain thimble		 LOCKE, Fred M.
 Insulator  
 1908
U 875,902 January 7, 1908 Means for Insulating the Supports of Electric Conduits
Use of multiple caps made of paper, felt, etc. over the threads of a pin in order to make the insulator fit tight on the pin and provide additional insulation		 EGNER, Carl Emil
 Pin  
U 876,828 January 14, 1908 Insulator
Composition design of reinforced concrete		 MCNUTT, Ross C.
 Composition  
U 877,242 January 21, 1908 Insulator Pin
Pin with metal shank and bolt		 SNAPP, Delos V.
FRAHER, Charles W.
 Pin  
 1910
U 974,672 November 1, 1910 Insulator
Suspension insulator		 JOHNSTON, Robert M.
 Suspension The Ohio Brass Co.
 1914
U Specimen known 1,094,852 April 28, 1914 Insulator Pin
Pin, metal flanged to fit crossarm and interior bolt for attachment to thimble		 HECHT, Julius L.
GAPEN, Jotham C.
 Pin 1/2 to Electric Service Supplies Co.
 1916
U 1,199,735 September 26, 1916 Insulator Pin
Pin, metal to prevent turning of threaded head (improvement of 1,094,852)		 PORTER, John W.
 Pin Electric Service Supplies Co.
U 1,202,418 October 24, 1916 Insulator Support
Pin, metal with bolting bracket and threaded for cementing type thimble		 PEIRCE, JR., Charles L.
 Pin 1/2 to Hubbard & Co.
U 1,205,971 November 28, 1916 Electric Insulator
Threads (metallic) or sleeve attached electrolytically		 BUSCHETTI, Claudis
 Thread  
U 1,207,321 December 5, 1916 Insulator Support
Pin, metal to fit loose in sheet metal thimble		 PEIRCE, JR., Charles L.
 Pin 1/2 to Hubbard & Co.
 1917
U 1,219,862 March 20, 1917 Separable Insulator Thimble Structure
Thimble designed to be removable with external & internal threads		 PEIRCE, JR., Charles L.
 Thimble Hubbard & Co.
U 1,250,387 December 18, 1917 Electric Insulator
Suspension made of several parts bolted together		 THOMAS, Percy H.
 Suspension  
 1918
U 1,258,816 March 12, 1918 Insulator Pin
Steel pin with conical support base that fits in grooved steel base that fits over the top of the crossarm		 ROSENFELD, Mortimer C.
 Pin  
U 1,268,315 June 4, 1918 Insulator Thimble
Thimble (threaded) for cementing in pin hole		 BECKER, Raymond A.
MADDEX, Thomas E.
 Thimble  
 1920
U 1,328,687 January 20, 1920 Insulator Support
Thimble of metal for multipart insulator		 PLIMPTON, Bentley A.
 Thimble  
 1923
U 1,468,043 September 18, 1923 Insulator Supporting Pin
Electrose pin		 STEINBERGER, Louis
 Pin  
U 1,468,044 September 18, 1923 Line Insulator
Metal thimble in Electrose pintype insulator and internal cavity to cool insulator		 STEINBERGER, Louis
 Electrose  
 1924
U 1,484,569 February 19, 1924 Ceramic Body
Method of making a suspension disk by inserting a fired porcelain part inside the bottom of an unfired disk, then firing the disk, which shrinks around the insert securing a cemented pin inside		 SCHEID, Johannes Friedrich
 Suspension H. Schomburg & Shone
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.
 1927
U 1,645,447 October 11, 1927 Suspension Insulator
Suspension, method of cementing metal bolt using flexible thimble		 PECK, John M.
 Suspension The Porcelain Insulator Corp.
U 1,653,117 December 20, 1927 Suspension Insulator
Suspension, method of cementing metal bolt using flexible thimble		 PECK, John M.
 Suspension The Porcelain Insulator Corp.
 1928
U 1,664,172 March 27, 1928 Insulator
Knob with metal hook to hold wire		 HOLLER, John R.
 Knob  
U 1,687,556 October 16, 1928 Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins
CD 122.4; Metal thread thimble for wooden pins carrier circuits connected electrically to other pins or brackets on the same crossarm to reduce leakage losses		 GORDON, Chester S.
LOWE, James T.
 Pin American Telephone & Telegraph Co.
 1929
U 1,737,999 December 3, 1929 Insulator
Thimble that screws into the pinhole and screws onto a special steel pin		 GODDARD, Walter T.
 Thimble Locke Insulator Corp.
 1931
U 1,824,766 September 29, 1931 Insulator
Thread insert of dry process porcelain, split & secured by glazewelding		 BARROW, George M.
 Thread Westinghouse Electric & Mfg. Co.
 1932
U 1,864,300 June 21, 1932 Anchor Device
Metal attachment device for wireholders		 FORREST, Elbert E.
 Wireholder Line Material Co
 1933
U 1,927,106 September 19, 1933 Insulator
Carrier circuit insulator with metal skirt coated with insulating material		 WILSON, Leon T.
 Carrier American Telephone & Telegraph Co.
U 1,939,760 December 19, 1933 Means for Suspending Porcelain Insulators
Means of connection suspension disks with internal threaded rings to receive external threaded connector from underneath disk		 BUXTON, Paul W.
 Suspension Wheeler Reflector 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.
 1937
U Specimen known 2,084,866 June 22, 1937 High Voltage Insulator
U-796 styles and CD 221 Hi-Top design		 PLIMPTON, Bentley A.
 Insulator Locke Insulator Corp.
U Specimen known 2,088,433 July 27, 1937 Fog and Dust Insulator
U-816 series		 PLIMPTON, Bentley A.
 Insulator Locke Insulator Corp.
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  
U 2,096,613 October 19, 1937 Multithread Pin Insulator Assembly
Pin with threaded malleable thimble that screws onto the steel pin allowing each adjustment of insulator with conductor		 HILL, Gregory C.
 Pin Locke Insulator Corp.
 1938
U 2,106,667 January 25, 1938 Mounting of Electric Insulators
Use of an elastic ring around pin to absorb tension and strain to prevent breaking insulator		 THIRY, Leon
 Pin  
 1939
U 2,155,189 April 18, 1939 Electrical Wire Bracket
Wireholder with lag screw		 HEINRICH, Walter A.
 Wireholder James R. Kearney Corp.
 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  
U 2,215,152 September 17, 1940 Insulator
Rubber insert		 HOSFIELD, Glenn E.
 Rubber  
 1943
U 2,323,967 July 13, 1943 Thimble Equipped Insulator
Malleable metal thimble cemented in the pinhole with a flange to cover the cement		 BARNITZ, Richard W.
 Thimble Porcelain Products, Inc.
 1948
U 2,443,435 June 15, 1948 Insulator
Suspension, pin design to prevent expansion stress from corrosion		 TAYLOR, John J.
 Suspension The Ohio Brass Co.
 1960
U 2,947,802 August 2, 1960 Insulator with Cap in Socket
Pin covered with plastic cap to more securely hold the insulator on the pin		 WORTMANN, Adolf
 Pin  

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