|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 = '202') ORDER BY date ASC, patent, type|
Total of 52 patents found where: Class is '174'; Subclass is '202';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|R||3,847||February 22, 1870||Improvement in Insulators
Threads formed internally for screw pin (reissue of 48,906)
|CAUVET, Louis A.
|U||115,521||May 30, 1871||Improvement in Insulators for Telegraph Wires
Threadless insulator with metal thimble cemented in pinhole
||Thimble||1/2 to B. B. Hagerty|
|U||123,878||February 20, 1872||Improvement in Telegraph Insulators
CD 141.9, four projections to reduce surface contact
|EMMINGER, David R. P.
|U||255,800||April 4, 1882||Insulator for Electrical Conductors
Pin hole with spiral slot to receive pin with side knob
|LEWIS, Albert C.
|U||281,452||July 17, 1883||Telegraph Insulator
Insulator with side bracket (see OBX March 1973, p. 43)
|CHAPMAN, Thomas L.
|U||289,449||December 4, 1883||Insulator
Transposition style but not intended for transposition (CD 199 & U-197)
||Insulator||1/2 to James W. Brennan|
|U||290,922||December 25, 1883||Insulator for Electrical Conductors
CD 110.5 & CD 110.6 spiral crown with opposing internal threads & wire clamp
|POPE, Frank L.
|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.
|U||298,593||May 13, 1884||Insulator
Washer around pin in pinhole
|LEWIS, Joseph Slater
||Washer||1/2 to William P. Thompson|
|U||317,479||May 5, 1885||Insulator for Electric Wires
Insulator with corrugations (vertical) inside skirt
|WRIGHT, William H.
|U||321,646||July 7, 1885||Electric Wire Insulator
Pin with spars to fit in threaded pin hole
|SCHOONMAKER, Edward T.
||Pin||1/2 to John E. Smith|
|U||386,986||July 31, 1888||Electric Insulator Peg
Pin (wooden) tapered below threads & to have metal rod inserted, too
|JOSLIN, William E.
|U||434,879||August 19, 1890||Electric Insulator
CD 144.5 and CD 260, ridges around inner surface of skirt
|U||448,703||March 24, 1891||Support for Electric Line Wires
Hanger insulator for trolley conductor
|WIRT, Herbert C.
|U||476,604||June 7, 1892||Insulator Bracket
Bracket with pin and hollow threaded head
|BRADY, Thomas H.
|U||505,123||September 19, 1893||Insulator Pin
Pin (wooden) strengthened by metal rod
|O'NEILL, James J.
|U||510,809||December 12, 1893||Insulator Pin
|LOCKE, Fred M.
||Pin||1/2 to G. Paddock & W. Page|
|U||526,498||September 25, 1894||Conductor Support and Insulator
Jeffrey Mine insulator (CD 185)
|OSYOR, David N.
||Mine||Joseph A. Jeffrey|
|U||527,318||October 9, 1894||Insulator Pin
Pin, wooden with internal reinforcing metal bar
|BULLOCK, Edward J.
||Pin||1/2 to Merwin Tuttle|
|U||554,664||February 18, 1896||Means for Supporting and Insulating Electric Conductors
Pin coated with water repelling material
|ECKERT, Thomas T.
|U||579,725||March 30, 1897||Insulator and Holder for Electric Railways
Trolley hanger insulator suspended from a cable. It is composed of an inverted insulator cup and a metal cover.
|KEITHLY, Willie C.
|U||582,396||May 11, 1897||Insulator
Self-tying slot top
|SCHNEE, William G.
||Self-tying Slot Top||1/2 to John R. Dixon|
|U||626,065||May 30, 1899||Insulator
|HOLMES, Welles E.
|U||628,343||July 4, 1899||Fixing of Insulators for Carrying Electric Line Wires
Metal pin with a threaded end for mounting an insulator and below that angular grooves to aid mounting and mortaring in brick, concrete or stone (see gb1899-0002396)
|U||685,776||November 5, 1901||Insulator Support
Pin sleeve plug with bolt to draw down & expanding sleeve in pin hole
|LOCKE, Fred M.
|U||701,246||May 27, 1902||Insulator Pin and Bracket
Pin and bracket for crossarm
|BAILEY, Elbert T.
|U||707,429||August 19, 1902||Insulator for Electric Wires
CD 207.5; Self-tying twist lock type (see 952,279)
|KING, Theodore F.
|U||853,744||May 14, 1907||High Tension Insulator
Multipart pintype insulator with large top skirt
|U||868,122||October 15, 1907||Electric Insulator
Multipart with glass skirt and two-piece head similar to Locke 25
|POINAN, Francis J.
|U||884,641||April 14, 1908||Hanging Insulator
Suspension with multipart shells and cable clamp
|CLARK, Walter G.
|U||893,285||July 14, 1908||Electric Cable Insulator
Terminal insulator providing a tight seal between conductor running down through the center of the insulator
|TOMPKINS, Edward M.
|U||1,045,536||November 26, 1912||Insulator Pin
Pin (metal) with elastic washer under threads to firmly hold insulator, prevent breakage
|ETTE, Charles G.
||Pin||Ette Investment Co.|
|U||1,107,111||August 11, 1914||Insulator
|PURKEY, Benjamin S.
|U||1,207,321||December 5, 1916||Insulator Support
Pin, metal to fit loose in sheet metal thimble
|PEIRCE, JR., Charles L.
||Pin||1/2 to Hubbard & Co.|
|U||1,234,205||July 24, 1917||Strain Insulator
Suspension using metal jaws inside to secure pin instead of using cement
|OSBORNE, David H.
||Suspension||Locke Insulator Mfg. Co.|
|U||1,258,211||March 5, 1918||Insulator Support
Multipart supporting pin
|GODDARD, Walter T.
||Multipart||Locke Insulator Mfg. Co.|
|U||1,435,225||November 14, 1922||Insulator
Pin, wooded covered with metal for strength and to keep wood dry
|GILCHREST, George Irving
||Pin||Westinghouse Electric & Mfg. Co.|
|U||1,444,434||February 6, 1923||Insulator Supporting Pin
Pin with corkscrew for threading into bottom of Electrose insulator
|U||1,468,043||September 18, 1923||Insulator Supporting Pin
|U||1,484,569||February 19, 1924||Ceramic Body
Method of making a suspension disk by inserting a fired porcelain part inside the bottom of an unfired disk, then firing the disk, which shrinks around the insert securing a cemented pin inside
|SCHEID, Johannes Friedrich
||Suspension||H. Schomburg & Shone|
|U||1,612,358||December 28, 1926||Insulator
Pin with cup below the threads to cover the inner skirt of the insulator and help secure the insulator to the pin
|BROWN, James M.
||Pin||Westinghouse Electric & Mfg. Co.|
|U||1,687,495||October 16, 1928||Insulator
Transposition (1-piece) for telephone line shaped like CD 194.5, CD 195.5
|GORDON, Chester S.
LOWE, James T.
|Insulator||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||1,691,964||November 20, 1928||Insulator Locking Device
Pin with locking device to fit in threads to secure insulator
|DICKEY, Ray S.
CARNAHAN, Paul A.
|U||1,704,005||March 5, 1929||Insulator Mounting
Suspension pin with lugs that fits in slot and turned to lock it inside the insulator
|Suspension||Aktiengesellschaft Brown Boveri & Cie.|
|U||1,927,106||September 19, 1933||Insulator
Carrier circuit insulator with metal skirt coated with insulating material
|WILSON, Leon T.
||Carrier||American Telephone & Telegraph Co.|
|U||2,215,152||September 17, 1940||Insulator
|HOSFIELD, Glenn E.
|U||2,218,497||October 15, 1940||Electrical Insulator
Rubber pin type insulator (see 2,304,483)
|SMITH, Donald H.
WHEELER, Herbert H.
|Rubber||Western Union Telegraph Co.|
|U||2,228,804||January 14, 1941||Insulator Pin
Pin made of Bakelite and nailed underneath the crossarm
|ADAMS, Basil R. S.
|U||2,317,799||April 27, 1943||Line Insulator
Insulator composed of a metallic hollow shell coated with ceramic material
||Insulator||Mycalex Corp. of America|
|U||2,703,820||March 8, 1955||Insulator Assembly
Odd pintype insulator with teepee top that screws down to hold a pair of wires
|LAYMAN, Robert E.
|U||4,047,279||September 13, 1977||Upgrading Current Distribution Insulators
Miscellaneous insulator with male screw to receive existing insulator for upgrading
|PETTIT, Ernest E.
||Miscellaneous||W. Leon Sell/Ernest E. Pettit/R. Don Sell|
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