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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 = '178') ORDER BY date ASC, patent, type

Total of 35 patents found where: Class is '174'; Subclass is '178';

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T / S Patent Date Description Patentee Category Assigned To
 1883
U 269,933 January 2, 1883 Insulator for the Suspension of Electrical Wire Conductors
Hook insulator of ""gelatinized or vulcanized fiber""
HIGGS, Paget
COURTENAY, William
Hook  
 1892
U 482,872 September 20, 1892 Insulator
Strain type
LEE, Charles T.
Strain The Johns-Pratt Co.
 1894
U 515,779 March 6, 1894 Strain Insulator
Strain type
LUSCOMB, Henry H.
Strain The Johns Pratt Co.
 1895
U 535,660 March 12, 1895 Insulator
Strain in the shape of a ball
BELCHER, Warren J.
Strain The Billings & Spencer Co.
 1903
U 724,351 March 31, 1903 Insulated Strain
Electrose strain (Brown p. 69)
STEINBERGER, Louis
Electrose  
 1905
U 786,691 April 4, 1905 Strain
Electrose strain (Brown p. 69)
STEINBERGER, Louis
Electrose  
 1908
U 904,069 November 17, 1908 Insulator
Strain insulator to electrically disconnect the circuit. (see reissue 13,526)
KEMPTON, Williard H.
Strain The Johns-Pratt Co.
 1909
U Specimen known 927,186 July 6, 1909 High Potential Strain Insulator
Electrose strain insulator, specimen marked with this patent
STEINBERGER, Louis
Electrose  
U 927,187 July 6, 1909 Insulator
Electrose disk insulator
STEINBERGER, Louis
Electrose  
 1910
U 959,929 May 31, 1910 High Voltage Switch
High voltage switch utilizing a string of suspension insulators
GODDARD, Walter T.
Switch Locke Insulator Mfg. Co.
U 974,610 November 1, 1910 Strain Insulator
Suspension made from Electrose
STEINBERGER, Louis
Suspension  
 1911
U 999,414 August 1, 1911 High Tension Strain Insulator
Electrose strain insulator
STEINBERGER, Louis
Strain  
U 1,011,652 December 12, 1911 Strain Insulator
Strain, ribbed made of Electrose
STEINBERGER, Louis
Strain  
 1912
U 1,015,229 January 16, 1912 Insulator
Suspension using multiple parts cemented together on tubular core. The patent is similar to the commonly referred ""Micarta Core"" insulators, but experts believe the patent was not used for those insulators. The glass insulators may have been made by Hemingray.
HILLIARD, John D.
PARSONS, Charles E.
Suspension J. E. Way
U 1,034,518 August 6, 1912 Hanger for Electrical Apparatus
Hanger for street lights composed of a bell insulator, cross arm with spool insulators on each end, and a hook to support the lamp.
SCHEIBLE, Albert
Hanger  
 1913
R 13,526 February 11, 1913 Insulator
Reissue of patent 904,069. Strain insulator to electrically disconnect the circuit.
KEMPTON, Willard H.
Strain The Johns-Pratt Co.
 1916
U 1,186,857 June 13, 1916 High Tension Strain Insulator
Rigid suspension insulator made of multiple units
STEINBERGER, Louis
Electrose  
R 14,204 October 17, 1916 Insulator
Electrose disk insulator. Reissue of patent 927,187
STEINBERGER, Louis
Electrose  
 1918
U 1,273,015 July 16, 1918 Electric Insulator
Suspension made of several parts bolted together
THOMAS, Percy H.
Suspension  
 1923
U 1,453,201 April 24, 1923 Strain Insulator
Electrose strain insulator
STEINBERGER, Louis
Strain  
 1924
U 1,484,051 February 19, 1924 Insulator
Cylindrical H-T ins, inner section to receive strain if outer is broken
AUSTIN, Arthur O.
Cylinder The Ohio Brass Co.
U 1,520,984 December 30, 1924 Electric Insulator
Suspension insulator composed of several parts to withstand tension
THOMAS, Percy H.
Suspension Westinghouse Electric & Mfg. Co.
 1927
U 1,637,374 August 2, 1927 Insulator
Suspension, tubular with ribs and cap on both ends
FORTESCUE, Charles Le G.
Suspension Westinghouse Electric & Mfg. Co.
 1928
U 1,664,208 March 27, 1928 Insulator
Suspension fog-type with ceramic covered wood/fiber connecting tube
GILCHREST, George Irving
Suspension Westinghouse Electric & Mfg. Co.
U 1,669,529 May 15, 1928 Insulator
Suspension fog-type with wood strain insulator for connecting to another insulator
MILLER, Frederick H.
Suspension Westinghouse Electric & Mfg. Co.
 1930
U 1,778,152 October 14, 1930 Multiple Skirt Suspension Insulator
Odd two-disk suspension made in one piece with metal caps on each end
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1931
U 1,822,485 September 8, 1931 Insulator
Method of attached metal cap and pin to suspension insulators
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
U 1,823,676 September 15, 1931 Insulator with Nested Parts
Multipart insulators with metal cap in cement joint of the outer two joints to add strength to the insulator
AUSTIN, Arthur O.
Manufacturing The Ohio Brass Co.
 1934
U 1,958,435 May 15, 1934 High Tension Insulator
Post or pedestal insulator with hollow interior filled with dry sand
HAWLEY, Kent Allen
Post Type Locke Insulator Corp.
 1935
U Specimen known 1,994,282 March 12, 1935 Fog Type Insulator
Fog type suspension similar to oil reservoir types with inverted mating cup
LUSIGNAN, JR., Joseph T.
Fog Type The Ohio Brass Co.
 1937
U 2,103,399 December 28, 1937 Insulator
Fog type suspension with top curved down over bottom petticoat that extends up inside the top part
WALKER, Robert H.
Fog The Ohio Brass Co.
 1942
U 2,278,330 March 31, 1942 Multipost Line Insulator
Two post insulators joined together with elongated metal bottom cap
MEYER, Edwin M.
Insulator Porcelain Products, Inc.
 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.
 1971
U 3,582,538 June 1, 1971 Prestressed Insulator
Prestressing post type insulators by making porcelain in compression in order to increase cantilever load
KILLIAN, Stanley C.
DEWEY, Benjamin F.
Post Type Interpace Corp.
 1989
U 4,845,318 July 4, 1989 Composite Electrical Insulator and Method of Forming Same
Polymer suspension with porcelain core
CLABBURN, Robin
LOOMS, John
Polymer Raychem Limited

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