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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 = '140R') ORDER BY date ASC, patent, type

Total of 48 patents found where: Class is '174'; Subclass is '140R';

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T / S Patent Date Description Patentee Category Assigned To
 1867
U Specimen known 63,206 March 26, 1867 Improvement in Insulators for Telegraph Wires
Hook encased in metal or wood allows arcing to ground		 BROOKS, David
 Hook  
 1880
U 224,580 February 17, 1880 Induced Current Guard for Electrical Conductors
Pre-transposition technique to eliminate induced current on telephone and telegraph wires		 CHINNOCK, Charles E.
 Transposition  
 1882
U 262,210 August 8, 1882 Combined Insulator, Lightning arrester, and Connector
Combined insulator, lightning arrestor and connector		 ECKERT, William
ECKERT, Edward
SEELY, John
 Lightning Arrestor  
 1883
U 280,324 June 26, 1883 Combined Insulator and Lightning arrester
Combined insulator and lightning arrestor		 NOBLE, John E.
 Lightning Arrestor 1/6 to Charles J. Leming
U 287,092 October 23, 1883 Mechanism for Preventing Induced Currents in Telephone Lines
Pre-transposition technique to eliminate induced current on telephone and telegraph wires		 BRENNAN, James W.
ROUSSEAU, Necter
 Transposition  
 1900
U 652,861 July 3, 1900 Overhead Wire Lightning Protector
Lightning rod with multiple points (see 637,282) (see reissue 11,759)		 POCHE, Joseph Arthur
 Lightning Rod Point  
 1910
U 947,516 January 25, 1910 Insulator
miscellaneous horizontal insulator with conductor supported on periphery of crown		 GODDARD, Walter T.
 Miscellaneous Locke Insulator Mfg. Co.
U Specimen known 954,329 April 5, 1910 Insulator Protecting Apparatus
Multipart protected by arcing ring		 NICHOLSON, Lloyd C.
 Multipart  
U Specimen known 966,583 August 9, 1910 Insulator Protecting Apparatus
Multipart protected by arcing ring		 NICHOLSON, Lloyd C.
 Multipart  
 1911
U 992,462 May 16, 1911 Insulator
Shield acting as a roof over the insulator		 WEICKER, William
 Shield Porzellanfabrik Kahla, Filiale Hermsdorf Klosterlausnitz
U 1,001,137 August 22, 1911 Insulator Protector
Arcing device attached to top and bottom of insulator		 GODDARD, Walter T.
 Arcing Locke Insulator Mfg. Co.
U 1,010,181 November 28, 1911 Electric Cable Protector
Protective shield mounted on top of the insulator to support the conductor.		 SANDFORD, JR., Joseph Addison
 Protective Shield The R. Thomas & Sons Co.
 1913
U 1,055,322 March 11, 1913 Insulator
Holes (2) through insulator to pin allows lightning to pass to pin & ground		 DE LONG, Harry A.
 Hole  
 1914
U 1,106,797 August 11, 1914 Electric Insulator
Suspension insulators		 FAY, John L.
WAY, Sylvester B.
 Suspension  
U 1,116,303 November 3, 1914 Arc Extinguisher
Use of explosive to break the arcing around a multipart insulator (see 1,127,043)		 LOCKE, Fred M.
 Transmission  
 1915
U 1,127,043 February 2, 1915 Electric Arc Extinguisher
Use of explosive to break the arcing around a multipart insulator (see 1,116,303)		 LOCKE, Fred M.
 Transmission  
U 1,166,393 December 28, 1915 Insulator
Electrose high tension pintype insulator		 STEINBERGER, Louis
 Electrose  
 1916
U 1,190,763 July 11, 1916 Insulator Clamp
Insulator clamp to secure the conductor in the top groove of a multipart insulator.		 HATCH, Edwin G.
 Clamp Clark Electric and Mfg. Co.
 1917
U 1,245,940 November 6, 1917 Insulator
Suspension string of various size disks to balance electrical capacitance		 MARVIN, Richard H.
 Suspension The R. Thomas & Sons Co.
U 1,251,013 December 25, 1917 Insulator Joint
Multipart without cement held by adjoining metal bands		 GODDARD, Walter T.
 Multipart  
 1918
U 1,273,015 July 16, 1918 Electric Insulator
Suspension made of several parts bolted together		 THOMAS, Percy H.
 Suspension  
U 1,283,651 November 5, 1918 Lightning Arrester
Lightning arrester with hole through top of insulator similar to U-70.		 BUCHANAN, Sutton R.
 Lightning Arrester/U-70  
 1922
U 1,426,981 August 22, 1922 Insulator
High tension strain made up of one or more ribbed insulators		 GODDARD, Walter T.
 Strain Locke Insulator Corp.
 1923
U 1,447,359 March 6, 1923 Ventilated Line Insulator
Electrose pintype insulator with holes in the center to ventilate and reduce heat		 STEINBERGER, Louis
 Electrose  
U 1,456,960 May 29, 1923 Joint for Articles of Ceramic and Similar Materials and Method of Producing Same
Multipart joined by sand, glaze-welding and/or differential shrinkage		 AUSTIN, Arthur O.
 Multipart The Ohio Brass Co.
 1926
U 1,611,871 December 28, 1926 High Tension Installation
Use of flux control insulators and arcing horns on transmission lines		 AUSTIN, Arthur O.
 Transmission The Ohio Brass Co.
 1927
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.
 1929
U 1,701,561 February 12, 1929 Insulator
CD 118; Carrier circuit insulator with metal cover screwed outside (internal threads)		 GORDON, Chester S.
 Carrier American Telephone & Telegraph Co.
U 1,702,236 February 12, 1929 High Tension Insulator Construction
Suspension disk with ""capacity gland"" to prevent electrical streamers and provide a balanced electrical field		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.
U 1,710,756 April 30, 1929 Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins
Reducing leakage on carrier circuits		 WILSON, Leon T.
 Carrier American Telephone & Telegraph Co.
U 1,730,171 October 1, 1929 Insulator
Design with metal pin and metal projections to prevent arc-over		 SMITH, Harold B.
 Suspension Westinghouse Electric & Mfg. Co.
U 1,730,180 October 1, 1929 Insulator
Suspension insulator made of cylindrical insulator and metal hoods on each end		 WAHLBERG, Nils A.
 Suspension Westinghouse Electric & Mfg. Co.
 1932
U 1,866,804 July 12, 1932 Means for Utilizing Wood Poles to Aid Insulators
On wood poles, connect the steel pins with a conductor and fuse to aid grounding an insulator struck by lightning and reduce the chance of burning the crossarm or pole		 HAWLEY, Kent A.
 Transmission Locke Insulator Corp.
U 1,889,244 November 29, 1932 Noninterferring Insulator
RFI treatment for new or existing insulators by attaching a metal crown		 HAWLEY, Kent A.
 RFI Locke Insulator Corp.
 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 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.
 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 2,162,288 June 13, 1939 Insulator
Suspension insulator with stepped rings to allow washing by rain and greater leakage length		 TAYLOR, John J.
 Suspension  
U Specimen known 2,165,773 July 11, 1939 Insulator for Communication Systems
CD 142, CD 142.4 - glass insert screwed in skirt with metallic iridizing		 WHEEER, Herbert H.
MCGINNIS, Orris
 Insulator Western Union Telegraph 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  
U Specimen known 2,195,986 April 2, 1940 Transmission Line Transposition
Transposition block (flat) for short wave radio antenna made of Faradite		 GODDARD, DeWitt Rugg
 Transposition Radio Corporation of America
 1942
U 2,275,208 March 3, 1942 Electrical Insulator
Method of applying RFI coating to suspension disk (see 1,661,823) (see 1,735,829) (see 2,154,387)		 TAYLOR, John J.
 RFI/suspension The Ohio Brass Co.
 1946
U 2,392,342 January 8, 1946 Combined Spark Gap and Insulator
CD 186, CD 186.1, CD 186.2; Transparent glass insulator with spark gap within the insulator for signal circuits		 STEINMAYER, Alwin G.
 Spark Gap Line Material Co.
 1957
U 2,776,332 January 1, 1957 Self-Cleaning Outdoor High Tension Insulators
Spiral or helical side petticoats that are washed by rain		 VON CRON, Hans
 Spiral Siemens-Schuckertwerke Aktiengesellschaft
 1959
U 2,879,323 March 24, 1959 Electrical Insulating Cement
Cement made from synthetic resin to bond metal to porcelain		 NICHOLS, Frank S.
SMITH, JR., Sidney R.
 Cement General Electric Co.
 1961
U 2,986,595 May 30, 1961 Post Type Insulator and Method of Making the Same
Method of sealing the internal part of the insulator to protect its electrical resistance		 FIERO, Carl D.
COREY, Charles E.
 Post Type Lapp Insulator Co., Inc.
 1985
U 4,524,404 June 18, 1985 High Voltage Insulator Assemblage Having Specially Chosen Series Resistance
Suspension insulator that eliminates flashover due to dirty insulators		 VERMA, Mandranjan
 Suspension  

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