Search the Insulator Patent Reference Library:

Total of 129 patents found where: Class is '174'; Subclass is '175';

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
		1848
U	5,889	October 31, 1848	Insulating Support for Telegraph Wires Block (glass) with zigzag slit held by hooded bracket	LIVINGSTON, Laureston R. ROGGEN, John J. ADAMS, Calvin	Block
		1866
U	53,201	March 13, 1866	Telegraph Insulator Hook with glazed enamel at right angle to square pointed shank	WADDELL, William W.	Hook
		1868
U	76,358	April 7, 1868	Improvement in Electric Telegraphs Rubber in porcelain or glass shell; glazed shell; sharp drip edge; ears	VARLEY, Cromwell F.	Rubber
		1869
U	94,037	August 24, 1869	Improvement in Insulators Lightning rod insulator slotted for self-locking	SCOTT, Franklin	Lightning Rod Insulator
U	97,392	November 30, 1869	Improvement in Insulator for Telegraph Wires Self-tying slot top	GUSEMAN, W. D. BRIGHT, E. C.	Self-tying Slot Top
		1874
U	149,763	April 14, 1874	Improvement in Telegraph Insulators Slotted block to hold wire held to pole with unique pin	LE BARON, Charles L.	Slotted
U	154,258	August 18, 1874	Improvement in Telegraph Insulators Slotted insulator to hold wire	LE BARON, Charles L.	Slotted
U	154,451	August 25, 1874	Improvement in Telegraph Insulators CD 109.5 self-tying with three projections on top (similar to Harloe)	BROOKE, Homer	Insulator
		1875
U	161,058	March 23, 1875	Improvement in Insulating Blocks for Telegraph Lines Slotted block to hold several wires	PIDGEON, George S.	Slotted
		1876
U	184,509	November 21, 1876	Improvement in Telegraph Insulators Self-tying head with threaded end to screw into pole	CUNNINGHAM, Robert A. CROWELL, David F.	Self-tying Miscellaneous
		1883
U	281,452	July 17, 1883	Telegraph Insulator Insulator with side bracket (see OBX March 1973, p. 43)	CHAPMAN, Thomas L.	Insulator
		1884
U	293,242	February 12, 1884	Insulator for Electric Wires Hook with different shape and glazed to screw into pole or crossarm	HALE, Albert W.	Hook
U	293,901	February 19, 1884	Lock Wire Insulator Self-tying with slotted crown (Electrical World 10-18-1884)	MCGRORY, Thomas	Self-tying Miscellaneous
U	303,399	August 12, 1884	Electric Wire Insulator Slotted block insulator to hold wire with a tie	PRINCE, George W.	Slotted
		1885
U	316,812	April 28, 1885	Telegraph Insulator CD 119, self-tying via projections (347,635 more appropriate)	O'BRIEN, John	Insulator	William Brookfield
U	323,055	July 28, 1885	Insulator Self-tying slot top with projections to bend wire	MCGRORY, Thomas	Self-tying Slot Top
U	328,728	October 20, 1885	Insulator Slotted tubular insulator for crossovers	SMITH, Leonard O.	Slotted
		1886
U	336,276	February 16, 1886	Insulator for Telegraph Wires miscellaneous - groove in crown for 2 or more wires of different size	WILSON, John	Miscellaneous
U	342,320	May 25, 1886	Electric Circuit Wire Insulator Self-tying	BLAKE, Edwin C. TRIMNELL, Ernest C.	Self-tying Miscellaneous	Blake & Trimnell and George Hunt
U	346,971	August 10, 1886	Telegraph Insulator Spout each end of groove for rain; barbed top groove; hole for tie wire	WILSON, John	Spout
U	347,635	August 17, 1886	Telegraph Insulator CD 119, self-tying with fingers (should use instead of 316,812)	O'BRIEN, John	Insulator	William Brookfield
		1887
U	367,164	July 26, 1887	Insulator Self-tying slot top	RUGER, Henry K.	Self-tying Slot Top
		1889
U	396,847	January 29, 1889	Wire Hook Insulated hook with four prongs to wrap line wire around	ASHEN, Peter	Hook	Sylvester Y. L'Hommedieu & Co.
U	403,727	May 21, 1889	Insulator Knob - self-tying	BERRANG, Jacob C.	Knob
U	408,383	August 6, 1889	Line Wire Insulator Self-tying with bail wire and slot top	GRAHAM, Carroll G.	Self-tying Miscellaneous
		1890
U	422,651	March 4, 1890	Insulator Cleat with split ends	STANLEY, George E.	Cleat
U	427,296	May 6, 1890	Insulator CD 141.8 and CD 1037, self-tying with tapered pin hole & clamping flange	BUZBY, Joseph F.	Insulator
		1891
U	463,955	November 24, 1891	Electric Wire Insulator Self-tying with fingers	NEWELL, Hiram F.	Self-tying Miscellaneous
		1892
U	469,940	March 1, 1892	Insulator Knob - self-tying	HAMMOND, Charles N.	Knob
U	479,134	July 19, 1892	Insulator Self-typing nail-knob with arm that secures the wire	CONOVER, Chauncey E.	Knob
U	480,011	August 2, 1892	Insulator Knob - self-tying	GREEN, John Jay	Knob	The Security Insulator Co.
U	483,771	October 4, 1892	Insulator Knob - self-tying Patent was owned by Pass & Seymour.	SEYMOUR, Albert P.	Knob
		1893
U	511,611	December 26, 1893	Insulator Cleat - self-tying	HAMMOND, Charles N.	Cleat	The Hammond Cleat & Insulator Co.
U	511,612	December 26, 1893	Insulator Cleat - self-tying	HAMMOND, Charles N.	Cleat	The Hammond Cleat & Insulator Co.
		1894
U	518,214	April 17, 1894	Ceiling Cleat Cleat for ceiling - 2 piece	BALL, Henry Price	Cleat
U	518,907	April 24, 1894	Cleat for Supporting Conducting Wires for Electric Circuits Cleat (hanger)	WYMAN, Horace B.	Cleat	1/2 to Albert Goodwin
U	520,412	May 29, 1894	Insulator Self-tying cylindrical cleat	CONOVER, Chauncy E.	Self-tying Miscellaneous
U	522,302	July 3, 1894	Self-Locking Cleat for Electric Wires Cleat - self-tying (shown on page 273 of 1897 Electric Appliance Co. catalog No. 12	NASHOLD, Elias	Cleat	2/5 to Henry Baskette
		1895
U	545,620	September 3, 1895	Cleat for Electric Wires Self tying cleat known as the ""Eureka""	WOOD, Montraville M.	Cleat
U	546,383	September 17, 1895	Insulator Self-tying with crown hole, slot & spacer	GERSTENLAUER, Daniel M.	Self-tying Miscellaneous
U	550,673	December 3, 1895	Crossover Insulator Crossover knob	BERON, Frank G.	Crossover	1/2 to James Gaffney
U	551,032	December 10, 1895	Cleat for Electric Wiring Cleat - self-tying	HEMPHILL, James R.	Cleat
		1896
U	562,528	June 23, 1896	Wire Holder Odd wireholder with two fins or ears that hold the wire	HAKANSSON, Louis M.	Wireholder
		1897
U	587,614	August 3, 1897	Electric Wire Holder Wireholder	STRAM, Charlie J.	Wireholder
U	590,832	September 28, 1897	Insulator Self-tying slot top	GRIMM, Fred B. NESSLER, John H.	Self-tying Slot Top
U	591,104	October 5, 1897	Insulator for Electric Wires Cleat - self-tying	ROBERTS, Willis	Cleat
U	593,689	November 16, 1897	Insulator Cleat - self-tying with spiral grooves	REMBE, Louis F.	Cleat
		1899
U	621,661	March 21, 1899	Insulator Cleat - self-tying (pivot-mounted) (found on U-184)	HARLOE, Morton BLOES, Wilton S.	Cleat
		1901
U	666,586	January 22, 1901	Insulator Insulator & crossarm (glass) reinforced with embedded metal wires	WOOLBERT, Henry W.	Insulator
		1902
U	707,429	August 19, 1902	Insulator for Electric Wires CD 207.5; Self-tying twist lock type (see 952,279) (see design 35,462)	KING, Theodore F.	Self-tying Twist
U	715,375	December 9, 1902	Insulator CD 109.7, CD 206.5 & U-184 self-tying via three alternate projections	HARLOE, Morton	Self-tying Miscellaneous
		1903
U	724,329	March 31, 1903	Insulator Self-tying nail-knob with three flanges on top for tying wire around the knob and saw-toothed bottom edge to prevent the knob from turning.	POLK, Robert H.	Knob
U	730,805	June 9, 1903	Insulator Self-tying slot top	STROH, William G.	Self-tying Slot Top
U	737,027	August 25, 1903	Insulator Self-tying slot top (see Brown No. 1 p. 128)	RUTLEDGE, William G.	Self-tying Slot Top
U	740,314	September 29, 1903	Insulator Self-tying slot top	ROBERTSON, Charles B. ROBERTSON, John J.	Self-tying Slot Top
U	744,631	November 17, 1903	Insulator CD 139 combination safety and CD 181.5	SCHOENTHALER, Edward F.	Insulator	2/3 to W. Parker & J. Finn
		1904
U	756,724	April 5, 1904	Insulator Cleat - self-tying	SNODGRASS, John C.	Cleat
U	757,765	April 19, 1904	Insulator Cleat - self-tying	OSBORNE, John W.	Cleat
U	758,175	April 26, 1904	Insulator CD 1038 tree hanger	CUTTER, Scott C.	Insulator
U	775,986	November 29, 1904	Insulator miscellaneous with flared skirt to hold paraffin	OAKMAN, Samuel	Miscellaneous	Luther A. Wright
		1905
U	783,348	February 21, 1905	Insulator Knob - self-tying	WRIGHT, Evans C.	Knob	1/2 to Francis McHenry
U	801,196	October 3, 1905	Self-Locking Insulator Self-tying slot top	MATHIAS, Charles L.	Self-tying Slot Top	1/2 to Frank Kennedy
		1906
U	815,506	March 20, 1906	Insulator Cleat - self-tying	BLYNT, Herbert S.	Cleat
U	821,401	May 22, 1906	Insulator Self-tying slot top	CARTER, Taylor	Self-tying Slot Top
U	831,338	September 18, 1906	Insulator Self-tying slot top	GLICK, Monroe J.	Self-tying Slot Top	J. Rardin & T. Rardin
U	834,567	October 30, 1906	Insulator Self-tying twist lock type	FALKENBERG, Richard A. SIMON, Solomon S.	Self-tying Twist
		1907
U	844,796	February 19, 1907	Insulating Wire Holder Self-tying via spiral slot	HATCHETT, Andrew	Self-tying Miscellaneous	1/3 to Battiste, 1/3 to Porter
U	865,697	September 10, 1907	Insulator Self-tying via side slot	HENDERSON, Robert E. KING, John N.	Self-tying Miscellaneous	1/4 to Williams, 1/4 to James King
U	874,445	December 24, 1907	Insulator Cleat - self-tying	SHEARS, Albert L.	Cleat
		1908
U	878,949	February 11, 1908	Electric Wire Insulator Crossover	HANSON, John H.	Crossover
U	881,967	March 17, 1908	Electric Insulator U-185	SLUSSER, Charles R.	Insulator
U	884,142	April 7, 1908	Insulator Cylindrical insulator with spiraling ribs to screw insulator into crossarm, center groove to hold line wire, external grooves to carry water away and drip points or serrations to allow water to drip down	FOREMAN, Ernest Jay	Crossarm
U	887,520	May 12, 1908	Insulator Knob - self-tying	REHLING, John W.	Knob
U	888,616	May 26, 1908	Insulator CD 109.7 self-tying with fingers	JOHNSON, Chauncey C.	Insulator	45/100 to John Watson
U	897,669	September 1, 1908	Insulator Knob - self-tying	SIEGWART, Frank J.	Knob
		1909
U	915,330	March 16, 1909	Insulator and Wire Clamp Self-tying twist lock type	BLACKBURN, Jasper	Self-tying Twist
U	927,321	July 6, 1909	Insulator Wire grooves undercut to hold wire	BOND, John T.	Wire
U	929,878	August 3, 1909	Insulator U-183	RANSON, Joseph W.	Insulator
		1910
U	955,661	April 19, 1910	Insulator Under crossarm type (see 1,694,415)	MOORE, William Enoch	Under Crossarm
U	970,078	September 13, 1910	Insulator Self-tying via side mounted device	MEURLING, John A.	Self-tying Miscellaneous
U	977,262	November 29, 1910	Insulating Hanger Knob - self-tying	BIGHAM, Neal Jay	Knob	Harry A. Robertson
		1911
U	986,702	March 14, 1911	Insulator Self-tying slot top	FRIEND, David H.	Self-tying Slot Top
		1912
U	1,016,780	February 6, 1912	Insulator Dry-spot, screw cap design	RUTZKY, Paul	Dry-spot
U	1,029,980	June 18, 1912	Insulator Knob - self-tying (see reissue 13,748 on 6-16-1914)	ELLIS, John	Knob
U	1,042,902	October 29, 1912	Insulator Miscellaneous using Mason jar lid base attached to support	FOUTZ, Jeremiah N.	Miscellaneous
		1913
U	1,059,629	April 22, 1913	Insulator Self-tying twist lock type	PLATT, Thomas M.	Self-tying Twist
U	1,071,419	August 26, 1913	Insulator Self-tying miscellaneous slotted cube	HETHERINGTON, Bert	Self-tying Miscellaneous
		1914
R	13,748	June 16, 1914	Insulator Knob - self-tying (reissue of 1,029,980)	ELLIS, John	Knob
U	1,109,058	September 1, 1914	Insulator Self-tying slot top	FRITZ, Osville J.	Self-tying Slot Top
		1915
U	1,149,017	August 3, 1915	Insulator Self-tying via side slot	BALLIET, Ray	Self-tying Miscellaneous
U	1,150,697	August 17, 1915	Insulator Self-tying screw top	NEELY, Zen W. LEWIS, George A.	Self-tying Screw Top
U	1,151,179	August 24, 1915	Insulator Self-tying slot top	HARRIS, Edwin D.	Self-tying Slot Top	1/2 to Arthur Mueller
		1916
U	1,169,246	January 25, 1916	Insulator Wire hanger [only 5 known]	FOLSTAD, Almer J.	Wire
U	1,174,002	February 29, 1916	Insulator Self-tying ""T"" top	ETTINGER, Victor P.	Self-tying Miscellaneous
U	1,177,315	March 28, 1916	Insulator Self-tying via side fingers	GEE, Warn George	Self-tying Miscellaneous	1/2 to W. A. Snapp
U	1,178,383	April 4, 1916	Insulator Self-tying cylindrical insulator with slot for line wire and bracket that fits around the insulator to hold the wire in place	CASLOW, William H.	Self-tying Miscellaneous
U	1,188,599	June 27, 1916	Self-Tying Insulator Cleat - self-tying	YOUMANS, Salem L. MCLAUGHLIN, James A.	Cleat
U	1,200,294	October 3, 1916	Insulator Self-tying slot top	AYRE, William G. SHAW, Frederick L.	Self-tying Slot Top
U	1,205,069	November 14, 1916	Insulator Self-tying slot top	WILLIAMS, Roger A.	Self-tying Slot Top
U	1,208,874	December 19, 1916	Insulator Self-tying	WILSON, William E.	Self-tying Miscellaneous
		1917
U	1,213,002	January 16, 1917	Insulator Mine insulator	PIERCE, Frank C.	Mine
U	1,217,032	February 20, 1917	Insulator for Electric Wires Self-tying twist lock type	LYON, Cody	Self-tying Twist
U	1,230,521	June 19, 1917	Bracket Tree insulator similar to the Cutter CD 1038 except with diagonal slot to secure wire, two holes for nails and two holes for tying to tree limbs	ROSS, George	Insulator
U	1,234,313	July 24, 1917	Insulator Self-tying	EFFRIG, Anthony F.	Self-tying Miscellaneous
U	1,251,416	December 25, 1917	Insulator U-186 (improved)	PURKEY, Benjamin S.	U-186
		1919
U	1,302,796	May 6, 1919	Insulator Self-tying	HEARD, Thomas J.	Self-tying Miscellaneous
		1921
U	1,371,855	March 15, 1921	Insulator Self-tying slot top	BULLER, Henry W.	Self-tying Slot Top
U	1,382,483	June 21, 1921	Electric Line Wire Insulator Self-tying slot top with circular slot	DECKER, John G.	Self-tying Slot Top
		1922
U	1,427,953	September 5, 1922	Attaching Device Knob	HARRISON, Arthur W.	Knob	Porcelain Appliance Corp.
U	1,429,369	September 19, 1922	Attaching Device Knob	PARKER, William M.	Knob	J. H. Parker & Son, Inc.
		1923
U	1,470,322	October 9, 1923	Wireless Tie Insulator Self-tying via fingers	FREDERICK, Harry A.	Self-tying Miscellaneous
		1924
U	1,492,496	April 29, 1924	Insulator and Transposition Device Transposition insulator with internal channels to transpose the wires	VERNOR, Thomas A.	Transposition
		1926
U	1,595,653	August 10, 1926	Tree Insulator Tree hanger - self-tying twist lock with lag screw	GAMMON, Thomas E. AVERILL, Henry D.	Tree	1/2 to Line Material Co.
		1927
U	1,620,804	March 15, 1927	Insulator Tree insulator bracket for CD 1038 (see 1,721,657)	CUTTER, Scott C.	Insulator
U	1,640,815	August 30, 1927	Insulator Knob - self-tying with side projections to crimp wire and hold it. It was made by the Trenle Porcelain Co. of East Liverpool and called the ""Quickon"" knob.	BROOKMAN, Horace D.	Knob
		1928
U	1,684,312	September 11, 1928	Electrical Insulator Self-tying slot top	FISCHER, John J. PAYNE, Warren R.	Self-tying Slot Top
		1929
U	1,718,259	June 25, 1929	Insulator Cleat - self-tying	SCOTT, Arthur C. RUPE, William G.	Cleat
U	1,721,657	July 23, 1929	Insulator Tree insulator (porcelain) improved with ribs - strengthening (see 1,620,804)	CUTTER, Scott C.	Tree
		1930
U	1,761,046	June 3, 1930	Transposition Device Transposition ring for radio line	PFAUTZ, Christian E.	Transposition	RCA
		1931
U	1,829,354	October 27, 1931	Insulator Self-tying clamp-top	HOUDE, Victor Frederick	Self-tying Miscellaneous	1/2 to Ferdinand La Fleche
		1936
U	2,043,754	June 9, 1936	Transposition Insulator Transposition for radio line	JOHNSON, Edgar F.	Transposition
		1938
D	108,489	February 15, 1938	Design for an Electric Insulator Standard Porcelain No. 57	DALTON, Rolland E.	Knob	Porcelain Products, Inc.
U	2,138,571	November 29, 1938	Insulator Transposition for telephone line	DEHMEL, Richard C.	Transposition	Bell Telephone Laboratories, Inc.
		1940
U	2,219,727	October 29, 1940	Insulator Structure Wireholder with multiple grooves and lag screw	STEWART, Lory B.	Wireholder	1/3 to Karl Thielscher
		1941
U	2,266,340	December 16, 1941	Insulator Self-tying twist lock type	SINDLINGER, Nevin Y.	Self-tying Twist
		1943
U	2,307,277	January 5, 1943	Wire Support Knob - self-tying	KLINGEL, Edward L.	Knob
U	2,309,971	February 2, 1943	Drop Wire Support Drop wire supporting clip	MCLARN, Ernest S.	Drop Wire Support	International Standard Electric Corp.
		1948
U	2,442,165	May 25, 1948	Insulator Odd under crossarm insulator with diagonal slot to insert wire into center slot and means to nail the insulator to the crossarm	GEROW, Kenneth Norris	Miscellaneous
U	2,444,938	July 13, 1948	Insulator Radio antennae insulator with center hole for nail and side slits to hold the antennae wire	MARTIN, JR., Albert D.	Radio

Total of 0.04 seconds