Search the Insulator Patent Reference Library:

Total of 107 patents found where: Class is '174'; Subclass is '156';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1872
U	126,027	April 23, 1872	Improvement in Insulators for Telegraph Wires Rubber coated flattened pin coated with mica for porcelain insulator with a cap	CONKLIN, JR., Joseph I.	Rubber
		1873
U	138,512	May 6, 1873	Improvement in Insulators for Telegraph lines Self-tying insulator with cap	MERRELL, Edward A.	Self-tying Miscellaneous
U	145,997	December 30, 1873	Improvement in Telegraph Insulators Self-tying insulator with nut-like cap to secure wire in grooved base (CJ 7-2000)	FOX, Christian HESTON, Elisha G.	Self-tying Miscellaneous
		1874
U	146,996	February 3, 1874	Improvement in Telegraph Insulators Cylinder split insulator with groove for wire and held by bracket	EBY, Peter	Cylinder
		1876
U	183,865	October 31, 1876	Improvement in Telegraph Insulators Slotted glass pin to hold wire and cap screwed to secure wire	REYNOLDS, David M.	Slotted	James M. Brookfield
		1879
U	217,427	July 8, 1879	Improvement in Telegraph Insulators Self-tying screw top	TAYLOR, Burnley	Self-tying Screw Top
		1883
U	272,069	February 13, 1883	Insulator for Electric Conductors Knob made of two parts to hold wire (see Dario's 1886 catalog of The Electrical Supply Co.)	MACE, Theodore	Knob
		1884
U	294,563	March 4, 1884	Insulator for Electric Wires Block with grooves	BEACH, William W.	Block
U	305,020	September 9, 1884	Insulator for Lightning Rods Lightning rod insulator of two interlocking parts	RUTH, John Anthony	Lightning Rod Insulator
		1885
U	315,660	April 14, 1885	Supporting Insulator for Telegraph Wires Self-tying screw top (see 1,305,168)	PRENZEL, Henry	Self-tying Screw Top
U	332,061	December 8, 1885	Telegraph Insulator Self-tying two piece combination insulator and pin	DEBLIEUX, Benjamin Noel	Self-tying Miscellaneous
		1887
U	359,812	March 22, 1887	Insulator for Supporting and Holding Electric Wires Cleat type for holding house wiring	PENNIE, Henry	Cleat	1/2 to Louis Schleip
U	375,276	December 20, 1887	Insulator Self-tying with J slot and cap	EMERY, Edward C.	Self-tying Miscellaneous
		1888
U	386,111	July 17, 1888	Electric Wire Insulator Knobs paired to hold wire in trees	CUTLER, Henry H.	Knob
		1889
U	400,552	April 2, 1889	Telegraph Wire Carrier Two spools mounted together to secure telegraph wire between them and mounted on a crossarm	DONALDSON, Robert S.	Spool
U	402,592	May 7, 1889	Electric Wire Insulator Self-tying screw top	HEAVISIDE, Arthur W.	Self-tying Screw Top
U	403,727	May 21, 1889	Insulator Knob - self-tying	BERRANG, Jacob C.	Knob
U	418,369	December 31, 1889	Screw Cleat for Electric Wires Cleat (screw) to hold wire	HUFF, George E.	Cleat
		1890
U	421,819	February 18, 1890	Insulator Blocks (2) to hold wire and pole system	DAVY, John W.	Block
U	426,203	April 22, 1890	Insulator Wood tree insulator with line wire running through the center of a rod of wood	MUNSIE, James F.	Wood	Thomas L. Coles
U	433,561	August 5, 1890	Cleat for Electric Wires Cleat	FURLONG, Lawrence	Cleat	Frederick Rockwell
		1891
U	444,879	January 20, 1891	Insulator Tree hanger	ELKINS, Charles	Tree
U	460,448	September 29, 1891	Insulator Self-tying screw top	ROSS, Frank A.	Self-tying Screw Top
U	463,756	November 24, 1891	Wire Hanger Wire hanger using two spool insulators in a bracket to secure the line wire	JACOBS, Charles A.	Hanger
		1893
U	490,560	January 24, 1893	Insulator Self-tying screw top	HAUTY, Auguste J.	Insulator	1/3 to John Burke
U	495,552	April 18, 1893	Insulator Clamp type called the ""Security"" insulator. It was sold by the McLeod, Ward & Co.	HILLS, Louis	Clamp Type
		1894
U	522,175	June 26, 1894	Insulator Self-tying with metal cap screws down on two metal ears to hold wire	ANDERSEN, Johan M.	Self-tying Miscellaneous	1/2 to Albert Anderson
		1895
U	544,778	August 20, 1895	Insulator for Electric or Other Wires CD 207.2 self-tying screw top similar to Prenzel patent (top is known but not the bottom)	SPROAT, Clinton TARR, Edward N.	Self-tying Screw Top
U	544,959	August 20, 1895	Insulator Wire sheath fit in insulator groove	COLLINS, Reuben G. FOLEY, Frank W.	Wire
U	546,585	September 17, 1895	Insulator Self-tying insulator (NOTI Insulator Co.)	DIBB, William VICKERS, Albert	Self-tying Miscellaneous
		1897
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	585,026	June 22, 1897	Tieless Insulator Self-tying screw top	DELERY, Robert	Self-tying Screw Top
U	587,614	August 3, 1897	Electric Wire Holder Wireholder	STRAM, Charlie J.	Wireholder
		1899
U	619,555	February 14, 1899	Telegraph Insulator Self-tying screw top	FRANTZ, Isaac B.	Self-tying Screw Top
U	626,592	June 6, 1899	Insulator Self-tying screw top	CARPENTER, John TONN, Charles	Self-tying Screw Top
		1900
U	660,140	October 23, 1900	Insulator Clamp type ribbed cylindrical 2-piece	ALLEY, Cassius	Clamp Type	1/3 to C. Miller & H. Wagner
U	664,176	December 18, 1900	Electric Insulator Knob - self-tying via screw cap	RISLER, Emil	Knob
U	664,432	December 25, 1900	Insulator CD 207? (see 726,846)	RENAULT, Edward	Insulator
		1901
U	669,691	March 12, 1901	Insulator for Electric Wires Two-piece self-tying insulator (found on U-184)	HARLOE, Morton	Self-tying Miscellaneous	1/2 to Wilton S. Bloes
U	671,876	April 9, 1901	Self-Locking Insulator Self-tying screw top	BEARDSLEY, Willard P.	Self-tying Screw Top
U	682,831	September 17, 1901	Adjustable Insulator Knobs with various fluted sides grouped to hold wire	MURDOCK, Henry D.	Knob
		1902
U	697,628	April 15, 1902	Insulator and Attachment for Electric Wires Self-tying screw top	JOHNSTON, Chauncey C.	Self-tying Screw Top
U	704,172	July 8, 1902	Insulator Self-tying screw top	CALVIN, James E.	Self-tying Screw Top	1/2 to Enos Cochran
U	713,904	November 18, 1902	Insulator for Telegraph Lines Self-tying screw top	MURRAY, John E.	Self-tying Screw Top
		1903
U	726,846	May 5, 1903	Insulator for Electric Wires U-181 & CD 207 (sim) self-tying screw top (see 664,432)	BELL, Joseph R.	Insulator
U	728,442	May 19, 1903	Electric Insulator Self-tying slot top with wedge keeper plug	BURKE, Edward J.	Self-tying Slot Top	1/2 to Cummings & Anderson
U	739,147	September 15, 1903	Insulator for Electric Wires Self-tying screw top	BOTTJER, Herman	Self-tying Screw Top
		1904
U	749,335	January 12, 1904	Insulator Electrose insulator to hold heavy conductor on top (similar to 578,825)	STEINBERGER, Louis	Electrose
U	750,722	January 26, 1904	Insulator Metal encased insulator with metal cap to hold cable (Brown p. 25)	STEINBERGER, Louis	Metal
U	751,739	February 9, 1904	Insulator Clamp type	LINDAL, Peter S.	Clamp Type
U	759,276	May 10, 1904	Insulator for Telegraph Wires Self-tying screw top	HOBERT, Clayton	Self-tying Screw Top
U	761,102	May 31, 1904	Insulator Insulator for carrying heavy cables composed of cap over the top to surround the conductor to prevent sparking and electrical leakage	RANDOLPH, Leonard M.	Insulator
U	770,962	September 27, 1904	Insulator Self-tying groove top and screw wire clamp	GILL, Jacob F.	Self-tying Miscellaneous
		1905
U	783,229	February 21, 1905	Locking Insulator Self-tying screw top	STEINBERGER, Louis	Self-tying Screw Top
U	802,397	October 24, 1905	Insulator for Electric Wires Self-tying screw top	HUMPHREY, Clarence A.	Self-tying Screw Top
U	803,010	October 31, 1905	Insulator Pin with grooved insulator on top of crossarm to catch wire if it falls off of insulator	MORRIS, Elmer P.	Pin
		1906
U	824,055	June 19, 1906	Insulator Crossover	ACLY, Harry M.	Crossover	Stanley Electric Mfg. Co.
U	840,336	December 25, 1906	Insulator Knob	JOHNSON, Alfred	Knob
		1907
U	849,606	April 9, 1907	Insulator Self-tying screw top	GOLDSTEIN, Albion	Self-tying Screw Top
U	853,744	May 14, 1907	High Tension Insulator Multipart pintype insulator with large top skirt	STEINBERGER, Louis	Electrose
U	861,275	July 30, 1907	Insulator for Electric Wires Cleat - self-tying	GALLAGHER, Constantine	Cleat
U	872,756	December 3, 1907	Insulator Self-tying screw top	SCHERER, Frederick C. FASHBAUGH, Henry C.	Self-tying Screw Top
		1908
U	898,921	September 15, 1908	Insulator Dry-spot, English screw cap design	PURVES, Thomas F. SINNOTT, John	Dry-spot
U	900,917	October 13, 1908	Insulator Self-tying miscellaneous	DOBSON, Grant	Self-tying Miscellaneous	1/2 to Richard Ohloff
U	905,940	December 8, 1908	High Tension Insulator Rainshed for conductor supported by crown	SEMENZA, Guido	Rainshed
U	908,089	December 29, 1908	Insulator Miscellaneous	GIBSON, James C.	Miscellaneous	1/2 to A. H. Smith
		1910
U	961,646	June 14, 1910	Insulator Self-tying screw top with slotted top	REUSCH, William L.	Self-tying Screw Top
U	971,785	October 4, 1910	Tree Insulator U-187	PIERCE, Alfred L.	Insulator	1/2 to Spalding K. Long
		1911
U	992,397	May 16, 1911	Insulator Self-tying screw top	ANDERSON, Milton E.	Self-tying Screw Top
		1912
U	1,016,780	February 6, 1912	Insulator Dry-spot, screw cap design	RUTZKY, Paul	Dry-spot
U	1,020,880	March 19, 1912	Insulator Self-tying screw top	BOURKE, Alexander M.	Self-tying Screw Top
U	1,043,916	November 12, 1912	Insulator Self-tying screw top with slotted top	FARWELL, Frank M.	Self-tying Screw Top
U	1,048,390	December 24, 1912	Insulator Self-tying screw top with slotted top	BROWN, Fred	Self-tying Screw Top
		1913
U	1,054,690	March 4, 1913	Electric Wire Supporting Device U-shaped block insulator fitted into slots in the crossarm to hold telegraph and telephone lines.	HICKS, Henry A.	Block
U	1,056,998	March 25, 1913	Insulator Means of insulating and supporting a bussbar.	JAMIESON, Bertrand G. KELLER, Carl A.	Bussbar
		1914
U	1,102,656	July 7, 1914	Insulator Insulator with hole in center and method to clamp conductor securely and the metal bracket with two bolts to secure the insulator	HADEN, Robert B.	Insulator
		1915
U	1,146,201	July 13, 1915	Electric Wire Insulator Self-tying screw top with slotted top	NUNN, Silvester	Self-tying Screw Top
U	1,150,697	August 17, 1915	Insulator Self-tying screw top	NEELY, Zen W. LEWIS, George A.	Self-tying Screw Top
U	1,159,409	November 9, 1915	Electric Insulator Multipart bus bar type that can be screwed together	MULLER, Auguste R.	Multipart
U	1,161,080	November 23, 1915	Insulator Self-tying screw top	SPICER, Frank M.	Self-tying Screw Top
		1916
U	1,167,208	January 4, 1916	Insulator Self-tying screw top	OPPELT, William	Self-tying Screw Top	1/3 to Harry Gamber
U	1,168,796	January 18, 1916	Wire Holder and Insulator Self-tying	FRENCH, Clarkson S.	Self-tying Miscellaneous
U	1,190,286	July 11, 1916	Insulator Self-tying non-pintype	HARLAN, Earle	Self-tying Miscellaneous
		1917
U	1,228,349	May 29, 1917	Electric Insulator Self-tying screw top	MUELLER, Auguste Robert	Self-tying Screw Top
U	1,236,886	August 14, 1917	Insulator for Telegraph and Telephone Wires Bracket composed of three grooved spool insulators arranged to allow the line wire to move horizontally to maintain the tautness of the line.	SORENSEN, Arvid C.	Bracket
		1918
U	1,263,746	April 23, 1918	Insulator Self-tying screw top with slotted pin for holding wire	CREAMER, William H.	Self-tying Screw Top
U	1,266,435	May 14, 1918	Telephone Insulator Self-tying screw top	ENGLISH, Roy W.	Self-tying Screw Top
		1919
U	1,292,451	January 28, 1919	Line Wire Insulator miscellaneous	FORT, Louis	Miscellaneous
U	1,305,168	May 27, 1919	Insulator U-124A/B, U-182A/B self-tying screw top similar to Prenzel patent 315,660	ROBERTS, Omer L.	Insulator
		1920
U	1,361,948	December 14, 1920	Insulator Pin with spring wire extending beyond edge of bottom pin hole	WIDMYER, James L.	Pin
		1924
U	1,509,074	September 16, 1924	Insulator Self-tying clamp top	WILSON, James Leslie	Self-tying Miscellaneous
U	1,509,645	September 23, 1924	Insulator Self-tying	FOSS, Marvin J.	Self-tying Miscellaneous
U	1,512,944	October 28, 1924	Conductor Holder Device to hold conductor of telephone and telegraphs lines while line is being strung	NESS, John A. NESS, Walter	Miscellaneous
		1925
U	1,538,428	May 19, 1925	Pole Line Insulator Self-tying odd insulator screwed into cut-out in top of crossarm	EMMONS, Albert F.	Self-tying Miscellaneous
		1928
U	1,663,011	March 20, 1928	Line Conductor Insulator Wireholder with lag screw and bolt attachment	KYLE, William D.	Wireholder	Line Material Co.
U	1,675,589	July 3, 1928	Insulator Self-tying slot top via separate piece (similar to Ransom patent)	BABINEAU, Oliver D.	Self-tying Slot Top
U	1,684,312	September 11, 1928	Electrical Insulator Self-tying slot top	FISCHER, John J. PAYNE, Warren R.	Self-tying Slot Top
		1931
U	1,810,950	June 23, 1931	Insulator Rubber self-tying insulator	EARHART, Albert C.	Rubber
		1932
U	1,882,486	October 11, 1932	Insulator Tree hanger grips the wire like a hand	COLE, William H.	Tree
		1933
U	1,920,978	August 8, 1933	Insulator Clamp type with lag screw	FORT, Louis	Clamp Type
U	1,927,639	September 19, 1933	Electric Insulator Suspension insulator with hole in top to insert pin, plug to cement in the hole, and cap cemented over the top	GRAMSS, Ernst	Suspension
		1934
U	1,954,592	April 10, 1934	Wire Support Wireholder	KLINGEL, Edward L.	Wireholder
U	1,961,434	June 5, 1934	Adjustable Insulator Bracket Odd bracket for two spools to hold line wire at varying angles when mounted in a tree with a lag screw	SMEAD, Donald G.	Bracket
		1942
U	2,304,204	December 8, 1942	Electrical Insulator Rubber insulator for wire fence	RATZMAN, Borah B.	Rubber
		1945
U	2,381,676	August 7, 1945	Insulator Dry-spot with screw top	MATHEWS, Martin D.	Dry-spot
		1947
U	2,426,466	August 26, 1947	Insulator for Electrical Wire Conductors Cleat with V-groove to hold line wire between the two halves	MINARIK, Rudolph A.	Cleat	1/2 to Ralph E. Meech
		1955
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.	Miscellaneous

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