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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 = '194') ORDER BY date ASC, patent, type

Total of 38 patents found where: Class is '174'; Subclass is '194';

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T / S Patent Date Description Patentee Category Assigned To
 1851
U Specimen known 8,418 October 14, 1851 Improvement in Insulators for Telegraph Wires
Metal or cast iron insulator with cupped dry area at bottom. Glass poured in with a conductor supporting iron rod embedded in the glass, and the cupped is coated or lined with glass, porcelain, or enamel. The bottom skirt is slanted inward 45 degrees to prevent water from splashing up inside wetting the interior surface. This feature was utilized in U-983 and U-984 made by the U. S. Pottery Co. in Bennington, VT.		 BATCHELDER, John M.
 Metal  
 1870
U 107,303 September 13, 1870 Improvement in Attaching Insulators to Telegraph Poles
Threadless insulator mounted on pin via horizontally inserted keeper pin		 STEARNS, Joseph B.
 Threadless  
 1883
U 287,830 November 6, 1883 Telegraph Insulator
Composition insulator (paper covered wooden insulator) (Brown p. 59)		 HINSDALE, Charles C.
 Composition  
 1884
U 297,101 April 22, 1884 Insulator for Telegraph Wires
Pin hole shaped to receive a keyed pin (advertisement eBay 4-2001)		 BALDWIN, Luther C.
THURSTON, John C.
 Pin  
U 297,683 April 29, 1884 Telephone Line
Insulator and pin coated with waterproof compound		 DOOLITTLE, Thomas B.
 Miscellaneous  
 1885
U 324,957 August 25, 1885 Telegraph Insulator
Insulator (glass) screwed into crossarm		 PUTNAM, Jacob D.
 Insulator  
 1887
U 367,164 July 26, 1887 Insulator
Self-tying slot top		 RUGER, Henry K.
 Self-tying Slot Top  
 1899
U Specimen known 634,568 October 10, 1899 Insulating Support for Electric Wires
CD 309, U-416, under-crossarm type for better protection from rain		 BEAL, Carroll N.
 Insulator  
 1901
U Specimen known 676,881 June 25, 1901 Self-Locking Insulator and Pin
U-376, U-376A, U-376B, U-376C, U-376D		 ETHERIDGE, Harry
 Insulator  
 1905
U 805,169 November 21, 1905 Insulator and Wire Clamp
Self-tying clamping with lever (see 552,501)		 TAUBOLD, John F.
 Self-tying Miscellaneous  
 1907
U Specimen known 855,253 May 28, 1907 Insulator Pin
Pin with hollow cast iron cone and thimble		 LEE, JR., William States
 Pin  
 1908
U 880,971 March 3, 1908 Insulator
Tie wire over top seat & through pin		 CARTER, George W.
 Tie Wire  
U Specimen known 894,616 July 28, 1908 Insulator and Wire Clamp
U-401 and U-401A, insulator & wire clamp		 FAY, John L.
 Insulator  
 1910
U 972,994 October 18, 1910 Insulator
Insulator base curve to fit flush with matching curved top of crossarm		 CAMPBELL, John H.
 Insulator  
 1913
U 1,065,737 June 24, 1913 Insulator and Support
Spiral conical insulator for tightening of line wire		 SLONECKER, Abiram J.
 Spiral  
 1916
U 1,174,607 March 7, 1916 Insulator Supporting Pin
Pin, metal threaded to receive metal bushing cemented in insulator		 PEIRCE, JR., Charles L.
 Pin  
U 1,192,690 July 25, 1916 Insulator Supporting Structure
Pin (metal) for mounting on crossarm in combination with a threaded thimble		 SCHAAKE, William
 Pin Westinghouse Electric & Mfg. Co.
 1917
U 1,246,461 November 13, 1917 Strain Insulator
Suspension metal cap design		 PLIMPTON, Bentley A.
 Suspension  
 1918
U 1,266,711 May 21, 1918 Strain Insulator
Suspension metal cap design		 PLIMPTON, Bentley A.
 Suspension  
 1920
U 1,328,732 January 20, 1920 Insulator Pin
Improvement of the Lee pin (see 855,253) to allow adjustment of the insulator		 HARMS, Rhinehart W.
 Pin The R. Thomas & Sons Co.
U 1,361,948 December 14, 1920 Insulator
Pin with spring wire extending beyond edge of bottom pin hole		 WIDMYER, James L.
 Pin  
 1925
U 1,542,588 June 16, 1925 Method of Making Suspension Insulators of Glass
Suspension glass insulator with glass pressed around mounting pin		 SCHOTT, Erich
 Suspension Jenaer Glaswerk Schott & Gen.
U 1,543,779 June 30, 1925 Manufacture of Insulators
Suspension glass insulator with pin molded in the glass		 LITTLETON, Jesse T.
FULCHER, Gordon S.
 Suspension Corning Glass Works
 1926
U 1,578,508 March 30, 1926 Insulator
Suspension, multipart with top/bottom grooves to attach support rings		 GARBUTT, Harry L.
 Suspension Westinghouse Electric & Mfg. Co.
 1928
U 1,687,535 October 16, 1928 Reduction of Losses in Insulators, Pins, and Cross Arms
Carrier circuit insulator with specific diameter/pin ratio		 AFFEL, Herman A.
GREEN, Estill I.
 Carrier American Telephone & Telegraph Co.
U 1,695,458 December 18, 1928 Insulator
Multipart (& suspension disk) with spacing cap and molten metal as cement		 GODDARD, Walter T.
 Multipart Locke Insulator Corp.
 1931
U 1,810,950 June 23, 1931 Insulator
Rubber self-tying insulator		 EARHART, Albert C.
 Rubber  
 1933
U 1,920,978 August 8, 1933 Insulator
Clamp type with lag screw		 FORT, Louis
 Clamp Type  
 1939
U 2,155,189 April 18, 1939 Electrical Wire Bracket
Wireholder with lag screw		 HEINRICH, Walter A.
 Wireholder James R. Kearney Corp.
 1941
U Specimen known 2,228,196 January 7, 1941 Insulator
Wireholder with lag screw		 BOCH, Oscar A.
 Wireholder  
U Specimen known 2,266,400 December 16, 1941 Insulator
CD 216		 REED, Frederick F.
 Insulator  
 1942
U Specimen known 2,304,483 December 8, 1942 Electrical Insulator
Rubber pin type insulator		 SMITH, Donald H.
WHEELER, Herbert H.
 Rubber Western Union Telegraph Co.
 1943
U Specimen known 2,311,779 February 23, 1943 Insulating Apparatus For Electric Fences
Knob for fence post (porcelain SURGE insulator) (see 2,350,420) (see design 126,721) (see design 126,722) (see 2,454,348) [see picture 170540955]		 SCHILLING, Lorell John
 Electric Fence Babson Brothers Co.
 1951
U 2,576,723 November 27, 1951 Electric Insulator Having Potential Drop Controlling Means
RFI design using two conductive coatings of different temperature expansion		 PERRINS, George
 RFI Bullers Limited
 1952
U 2,592,698 April 15, 1952 Insulator Supporting Pin and Cob
Steel pin with threaded cob made of cellulose acetate butyrate molded into threads (see reissue 23,885 on 10-5-1954)		 HUBBARD, David C.
 Pin A. B. Chance Co.
 1954
R 23,885 October 5, 1954 Insulator Supporting Pin and Cob
Steel pin with threaded cob made of cellulose acetate butyrate molded into threads (reissue of 2,592,698)		 HUBBARD, David C.
 Pin A. B. Chance Co.
 1956
U Specimen known 2,734,098 February 7, 1956 Transposition Insulators
CD 203.2 transposition - rainshed of elastic material between conductors		 BONNESEN, Elmer J.
 Insulator American Telephone & Telegraph Co.
 1964
U 3,141,063 July 14, 1964 Toughened Glass, Pin Type Insulator
Glass tempering method		 EDWARDS, Derrik R.
 Glass Pilkington Brothers Limited

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