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

Total of 12 patents found where: Class is '174'; Subclass is '140H';

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T / S Patent Date Description Patentee Category Assigned To
 1868
U 75,889 March 24, 1868 Improvement in Telegraph Insulators
Hook with metal case secured to crossarm (see reissue 75,889)
FINN, J. L.
Hook  
 1880
R 9,484 November 30, 1880 Telegraph Insulator
Hook with metal case secured to crossarm (see 75,889)
FINN, John L.
Hook Amzi S. Dodd and Chinnock Electric Co.
 1912
U 1,015,224 January 16, 1912 Insulator
Suspension insulator of insulating rope, hoods, and arcing rods. [This looks very close to the handful of glass suspension insulators found in 2002 in northern CA by Paul Greaves and Mike Spadafora. The glass was most probably made by Hemingray. No markings were found.]
ALSBERG, Julius
Suspension  
 1913
U 1,069,782 August 12, 1913 Electric Insulator
Multipart cable clamp using metal crown cap
HILLIARD, John D.
Multipart  
 1918
U 1,277,304 August 27, 1918 Metal Protected High Voltage Insulator
Protective shield of metal to protect insulator
GATI, Bila
Protective Shield  
 1928
U 1,659,183 February 14, 1928 Insulator
Suspension with metal flanges to balance electrical field
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U 1,678,663 July 31, 1928 Insulator
Protective shield
WILSON, Leon T.
Protective Shield American Telephone & Telegraph Co.
 1929
U 1,702,235 February 12, 1929 System of Line Insulation and Insulators Therefor
Odd Electrose insulator
STEINBERGER, Louis
Insulator  
U 1,730,170 October 1, 1929 Insulator
Design with metal pin and metal projections to prevent arc-over
SMITH, Harold B.
Suspension Westinghouse Electric & Mfg. Co.
 1930
U 1,782,790 November 25, 1930 Insulator
Strain insulator composed of a wooden strain sealed inside porcelain tubular shell that is filled with non-conducting oil
MILLER, Frederic H.
JACKSON, Ray P.
Strain Westinghouse Electric & Mfg. Co.
 1934
U 1,967,654 July 24, 1934 Insulator
Fog type multipart & suspension insulator with porous coating, wire screen for RFI
AUSTIN, Arthur O.
Fog Type The Ohio Brass Co.
 1936
U 2,048,016 July 21, 1936 Fog Type Insulator
Fog-type suspension disk with metal dish underneath to keep bottom pin area dry
LUSIGNAN, JR., Joseph T.
Fog Type The Ohio Brass Co.

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