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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 assigned_to ASC, date, 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
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  
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  
U 287,830 November 6, 1883 Telegraph Insulator
Composition insulator (paper covered wooden insulator) (Brown p. 59)		 HINSDALE, Charles C.
 Composition  
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  
U 324,957 August 25, 1885 Telegraph Insulator
Insulator (glass) screwed into crossarm		 PUTNAM, Jacob D.
 Insulator  
U 367,164 July 26, 1887 Insulator
Self-tying slot top		 RUGER, Henry K.
 Self-tying Slot Top  
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  
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  
U 805,169 November 21, 1905 Insulator and Wire Clamp
Self-tying clamping with lever (see 552,501)		 TAUBOLD, John F.
 Self-tying Miscellaneous  
U Specimen known 855,253 May 28, 1907 Insulator Pin
Pin with hollow cast iron cone and thimble		 LEE, JR., William States
 Pin  
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  
U 972,994 October 18, 1910 Insulator
Insulator base curve to fit flush with matching curved top of crossarm		 CAMPBELL, John H.
 Insulator  
U 1,065,737 June 24, 1913 Insulator and Support
Spiral conical insulator for tightening of line wire		 SLONECKER, Abiram J.
 Spiral  
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 1,246,461 November 13, 1917 Strain Insulator
Suspension metal cap design		 PLIMPTON, Bentley A.
 Suspension  
U 1,266,711 May 21, 1918 Strain Insulator
Suspension metal cap design		 PLIMPTON, Bentley A.
 Suspension  
U 1,361,948 December 14, 1920 Insulator
Pin with spring wire extending beyond edge of bottom pin hole		 WIDMYER, James L.
 Pin  
U 1,810,950 June 23, 1931 Insulator
Rubber self-tying insulator		 EARHART, Albert C.
 Rubber  
U 1,920,978 August 8, 1933 Insulator
Clamp type with lag screw		 FORT, Louis
 Clamp Type  
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  
 A. B. Chance Co.
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.
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.
 American Telephone & Telegraph Co.
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 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.
 Babson Brothers Co.
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.
 Bullers Limited
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
 Corning Glass Works
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
 James R. Kearney Corp.
U 2,155,189 April 18, 1939 Electrical Wire Bracket
Wireholder with lag screw		 HEINRICH, Walter A.
 Wireholder James R. Kearney Corp.
 Jenaer Glaswerk Schott & Gen.
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.
 Locke Insulator Corp.
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.
 Pilkington Brothers Limited
U 3,141,063 July 14, 1964 Toughened Glass, Pin Type Insulator
Glass tempering method		 EDWARDS, Derrik R.
 Glass Pilkington Brothers Limited
 The R. Thomas & Sons Co.
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.
 Western Union Telegraph Co.
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.
 Westinghouse Electric & Mfg. Co.
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.
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.

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