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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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