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Total of 117 patents found where: Class is '174'; Subclass is '174';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1864
U	41,157	January 5, 1864	Improvement in Insulators for Telegraph Wires Earthenware (terra-cotta) insulator to hold 3 to 7 wires	HOLLAND, James	Earthenware
		1867
U	66,453	July 9, 1867	Improvement in Insulators for Telegraphs Earthenware pin and insulator saturated with tar	BOYNTON, John F.	Earthenware
U	70,727	November 12, 1867	Improvement in Insulators for Lightning Rods Lightning rod insulator (glass) with sheet metal strip under shingles	LOCKHART, Thomas J. LOCKE, Josiah	Lightning Rod Insulator
		1871
U	121,368	November 28, 1871	Improvement in Telegraph Insulators Triangular insulator to reduce surface contact of tie wire	HOLLEY, Minard Y.	Triangular
		1872
U	122,961	January 23, 1872	Improvement in Telegraph Insulators Wooden insulator coated with tar with metal cap	POND, Chester H.	Wood
U	123,878	February 20, 1872	Improvement in Telegraph Insulators CD 141.9, four projections to reduce surface contact	EMMINGER, David R. P.	Insulator
U	129,724	July 23, 1872	Improvement in Insulators for Telegraphic Uses Roughened lower surface of insulator to retain patented coating mixture	FARMER, Moses G.	Rough
		1877
U	187,183	February 6, 1877	Improvement in Telegraph Insulators CD 130.2, wire groove composed of a series of projections	SEILER, Paul	Insulator	1/2 to Joseph Herz
		1883
U	276,839	May 1, 1883	Insulator for Telegraph Wires CD 110.5 & CD 110.6 spiral groove crown & clamp for line wire	LEWIS, Joseph Slater	Insulator
U	286,801	October 16, 1883	Insulator CD 109, CD 135, diamond shaped wire groove	FISKE, Bradley MOTT, Samuel	Insulator
U	289,449	December 4, 1883	Insulator Transposition style but not intended for transposition (CD 199 & U-197)	ROUSSEAU, Necter	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.	Insulator
		1884
U	297,683	April 29, 1884	Telephone Line Insulator and pin coated with waterproof compound	DOOLITTLE, Thomas B.	Miscellaneous
U	301,446	July 1, 1884	Insulator for Electric Wires Hook with glazed covering (see 293,242 and 294,384)	HALE, Albert W.	Hook
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	319,447	June 9, 1885	Insulator Wire groove projections through metal cover to contact wire	BROOMHALL, George L.	Wire
U	324,957	August 25, 1885	Telegraph Insulator Insulator (glass) screwed into crossarm	PUTNAM, Jacob D.	Insulator
U	328,929	October 27, 1885	Electric Wire Insulator and Supporter Wooden self-tying cleat	FAWCETT, William N. HUNTLEY, George F.	Wood
		1886
U	347,454	August 17, 1886	Telegraph Wire and Insulator Fastening Self-tying with retainer for holding wire in groove	WILSON, John	Self-tying Miscellaneous
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
		1888
U	383,734	May 29, 1888	Insulator for Electrical Wires Self-tying slot top & metal keeper	KEYES, Frank E.	Self-tying Slot Top
U	390,741	October 9, 1888	Insulator or Bracket Support for Electric Wires miscellaneous odd pin type with curved pinhole	ADAMS, Thomas E.	Miscellaneous
		1889
U	415,504	November 19, 1889	Insulator Insulator with internal spring to hold tension on the wire	FOWLER, George	Spring
		1890
U	425,513	April 15, 1890	Insulator Rainshed (hood) over wire	KOOKOGEY, William P.	Rainshed	The Kookogey Electric Co.
U	430,296	June 17, 1890	Insulator CD 257, CD 259, CD 263, dove-tail ears on crown - helmet. Patent is also found on New Lexington porcelain insulators M-3890 and M-4325A.	OAKMAN, Samuel	Insulator
		1891
U	450,384	April 14, 1891	Electric Wire Insulator Knob with two grooves and side petticoat	BERTOLETTE, Daniel A.	Knob
U	451,950	May 12, 1891	Electric Insulator CD 262, CD 263, CD 264, eyes for tie wire	OAKMAN, Samuel	Insulator
		1892
U	477,980	June 28, 1892	Insulator Knob (specimens made by Akron Marble & Toy Mfg. Co.)	WIRT, Herbert C.	Knob	The Thomson-Houston Electric Co.
U	482,297	September 6, 1892	Electric Insulator Threaded externally with saddle groove and square hole	CLARK, William H.	Thread
U	485,106	October 25, 1892	Insulator Knob of mica with side groove to hold wire	LEE, Charles T.	Knob	The Johns-Pratt Co.
		1894
U	520,367	May 22, 1894	Insulator Transposition insulator CD 204 & U-192A	LOCKE, Fred M.	Insulator	1/2 to G. Paddock & W. Page
U	527,317	October 9, 1894	Insulator Protective shield for wire groove	BULLOCK, Edward J.	Protective Shield
		1895
U	544,959	August 20, 1895	Insulator Wire sheath fit in insulator groove	COLLINS, Reuben G. FOLEY, Frank W.	Wire
U	545,819	September 3, 1895	Electric Insulator CD 268, hole through crown for tie wire	ROTHENBERGER, Daniel M.	Insulator	2/3 to C. Inglis & E. Reilly
U	549,443	November 5, 1895	Electric Supporting Insulator Knob	COLLINS, Joseph	Knob
		1896
U	573,101	December 15, 1896	Wall Insulator Slack wire ring driven into mortar between bricks	O'NEILL, James J.	Slack Wire
		1897
U	586,372	July 13, 1897	Insulator Self-tying slot top with perpendicular hole for retainer	STEINBERG, JR., Henry W.	Self-tying Slot Top
U	587,614	August 3, 1897	Electric Wire Holder Wireholder	STRAM, Charlie J.	Wireholder
U	590,806	September 28, 1897	Insulator U-937, eave trough above crossarm	LOCKE, Fred M.	Insulator
U	592,505	October 26, 1897	Electrical Insulator Protective coating of elastic material and wire groove protector	BARBOUR, Wellington	Protective Coat
		1898
U	600,475	March 8, 1898	Electrical Insulator and Method of Making Same Multiple thin porcelain shells fused together with glaze, ""glaze-filling"" method, U-928 & U-928A. (see patent 601,195) (see patent gb1898-0006235) Patent was owned by the R. Thomas & Sons Co.	BOCH, John W.	Insulator
		1899
U	627,366	June 20, 1899	Insulator for Fastening Electric Wires Knob - self-tying	TRELEAVEN, John	Knob	Harry Painter and Christopher Turton
U	633,173	September 19, 1899	Insulator CD 121 and CD 143 with external projections to absorb mechanical shock - horizontal ridges	WITHYCOMBE, Frederick H.	Insulator	11/20 to Clement H. McLeod
		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	660,271	October 23, 1900	Insulating Knob for Electric Light Wiring Knob - self-tying	HENDERSON, Robert H. HENDERSON, John G.	Knob
		1901
U	689,171	December 17, 1901	Insulator Insulators (2) with one pinhole	DUFFY, John F. HERSHEY, Henry B.	Insulator
		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	724,848	April 7, 1903	Insulator CD 159, wire groove with flat surface for line wire	GREGORY, Ferdinand W.	Insulator
		1904
U	753,399	March 1, 1904	Combination Bracket and Knob for Electric Conductors nail-knob with hole in the top and two side groove for tie-wire (see Western Electrician 4-29-1905)	HUNT, Emory C.	Knob	1/2 to Charles Snyder
		1905
U	783,348	February 21, 1905	Insulator Knob - self-tying	WRIGHT, Evans C.	Knob	1/2 to Francis McHenry
U	785,561	March 21, 1905	Wiring Cleat Cleat - self-tying	LATIMER, John M.	Cleat	Consolidated Fire Alarm Co.
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
U	804,115	November 7, 1905	Electrical Insulator Knob - self-tying	GOODRIDGE, Gilbert W.	Knob
		1906
U	831,168	September 18, 1906	Insulator Knob on side of pony insulator similar to British terminal insulator	LEMBECK, Arthur J. L.	Knob	1/2 to John Wall
U	833,877	October 23, 1906	Insulator miscellaneous bolted insulator	GRANT, Francis Jones	Miscellaneous
		1907
U	843,844	February 12, 1907	Third Rail Insulator Third rail insulator	REDMAYNE, Robert Norman	Third Rail
U	855,355	May 28, 1907	High Potential Insulator Electrose multipart insulator for high voltages	STEINBERGER, Louis	Electrose
U	861,275	July 30, 1907	Insulator for Electric Wires Cleat - self-tying	GALLAGHER, Constantine	Cleat
U	867,901	October 8, 1907	Insulator CD 110, CD 147 & CD 150 spiral extension above wire groove to facilitate removing or installing the insulator without the need to remove the tie-wire.	BARCLAY, John C.	Insulator
U	872,756	December 3, 1907	Insulator Self-tying screw top	SCHERER, Frederick C. FASHBAUGH, Henry C.	Self-tying Screw Top
		1908
U	876,828	January 14, 1908	Insulator Composition design of reinforced concrete	MCNUTT, Ross C.	Composition
U	879,033	February 11, 1908	Insulators for Electric Wires Knob	CALDWELL, John	Knob
U	885,678	April 21, 1908	Insulator for Heavy Currents Heavy duty Electrose insulator that was bolted to supports and had several horizontal flanges or skirts.	STEINBERGER, Louis	Electrose
U	891,955	June 30, 1908	Insulator Self-tying insulator attached to top of crossarm consisting of a plate with two knobs to wrap the line wire around	SANDLIN, William C.	Self-tying Miscellaneous	1/3 to Arthur Moulton and 1/3 to C. W. Savage
U	898,921	September 15, 1908	Insulator Dry-spot, English screw cap design	PURVES, Thomas F. SINNOTT, John	Dry-spot
U	902,262	October 27, 1908	Insulator Protector Covering for insulator	SPARKS, Robert Romney	Covering
		1909
U	918,127	April 13, 1909	Insulator miscellaneous - specially shaped crown slot to hold wire	CLARK, Walter G.	Miscellaneous
U	927,186	July 6, 1909	High Potential Strain Insulator Electrose strain insulator, specimen marked with this patent	STEINBERGER, Louis	Electrose
U	944,259	December 28, 1909	Insulator Self-tying miscellaneous	DENNLER, August G.	Self-tying Miscellaneous	1/3 to William Quigg
		1910
U	948,321	February 8, 1910	Knob Insulator Knob or spool to support a pair of insulation covered wires	GRACE, Sergius P.	Knob	Western Electric Co.
U	954,350	April 5, 1910	Insulator Wire groove on top with enlarged crown to aid in tying (see 1,229,272)	SILER, Andrew J.	Wire	1/3 to Aaron Siler & 1/3 to Sumner Siler
U	954,596	April 12, 1910	Insulator Knob (Fireplug)	STADERMANN, Albert L.	Knob
U	971,322	September 27, 1910	Mine Insulator Mine hanger insulator (see GB191027804)	SPEAKMAN, Charles W.	Mine
		1911
U	1,008,087	November 7, 1911	Insulator Cleat - self-tying	SWEENEY, James M.	Cleat
		1912
U	1,038,418	September 10, 1912	Insulator Self-tying slot top	NELSON, William H. S.	Self-tying Slot Top
		1913
U	1,054,138	February 25, 1913	Means for Attaching Wires and Cables to Insulators Clamping wire device to eliminate tie wire (French gingerbread man)	PARRA, Henri	Clamp Type	Societe H. Parra Et. Cie.
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	1,065,737	June 24, 1913	Insulator and Support Spiral conical insulator for tightening of line wire	SLONECKER, Abiram J.	Spiral
		1915
U	1,140,050	May 18, 1915	Insulator U-189 & U-189A, CD 175.5 The insulator was designed to support the power line to street lights. Only pieces of a specimen have been found. (see 1,101,802)	MANWARING, Robert A. HESSEL, James T.	Insulator
U	1,166,392	December 28, 1915	Insulator Electrose strain that can be bolted between two crossarms	STEINBERGER, Louis	Electrose
		1916
U	1,174,287	March 7, 1916	Insulator Support Pin - hollow metal & bolted to crossarm for CD 257	ROSENFELD, Mortimer C.	Insulator
U	1,190,286	July 11, 1916	Insulator Self-tying non-pintype	HARLAN, Earle	Self-tying Miscellaneous
		1917
U	1,213,011	January 16, 1917	Device for Connecting Outside Wires to Buildings Odd cylindrical knob with off-center screw hole and external grooves for attaching wires to buildings (see reissue 14,312 on 6-5-1917) [Angle Insulator Co.]	RAGOTZKY, Philip C.	Knob
R	14,312	June 5, 1917	Device for Connecting Outside Wires to Buildings Odd cylindrical knob with off-set screw hole and external grooves for attaching wires to buildings (reissue of 1,213,011) [Angle Insulator Co.]	RAGOTZKY, Philip C.	Knob
U	1,229,272	June 12, 1917	Insulator CD 210 with top saddle groove (see 954,350)	IRWIN, John J.	Insulator
		1918
U	1,284,799	November 12, 1918	Knob and the Like Knob with two vertical grooves and lag screw for mounting to building	SINDELAR, Lambert J.	Knob
		1925
U	1,527,318	February 24, 1925	Insulator Knob with multiple side grooves	LEWIS, Edwin	Knob	American Telephone & Telegraph Co.
U	1,530,298	March 17, 1925	Knob Knob with side grooves	CHAMBLESS, Young J. LEE, Ammie L.	Knob
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
		1927
U	1,651,704	December 6, 1927	Line Insulator Wireholder with lag screw	HENDEE, Lem E.	Wireholder	Line Material Co.
		1928
U	1,688,411	October 23, 1928	Electrical Insulator Crown cable & tie wire groove arced to reduce stress from wire/cable	COOK, William S.	Crown
U	1,694,415	December 11, 1928	Insulator Under crossarm type (see 955,661)	GORDON, Chester S.	Under	American Telephone & Telegraph Co.
		1929
U	1,701,561	February 12, 1929	Insulator CD 118; Carrier circuit insulator with metal cover screwed outside (internal threads)	GORDON, Chester S.	Carrier	American Telephone & Telegraph Co.
U	1,703,853	February 26, 1929	Dry-Spot Insulator CD 182, U-173, U-174 & U-175 dry-spot	GOULD, Rufus	Insulator	1/2 to Postal Telegraph Cable Co.
U	1,708,038	April 9, 1929	Low Loss Insulator CD 176 (see June 1972 CJ p. 6)	WILSON, Leon T.	Insulator	American Telephone & Telegraph Co.
U	1,709,477	April 16, 1929	Insulator Wireholder with lag screw	KYLE, William D.	Wireholder	Line Material Co.
U	1,720,181	July 9, 1929	Insulator Wireholder	KYLE, William D.	Wireholder	Line Material Co.
		1930
U	1,744,674	January 21, 1930	Insulator Pin Pin that holds insulator at an angle against strain on turns in the conductor	PORTER, Edward Y.	Pin
U	1,755,971	April 22, 1930	Insulator Neon, knob to support wires for neon sign (""spook"" insulator)	SMALLEY, Robert C.	Neon	Claud Neon Lights, Inc.
		1932
U	1,869,397	August 2, 1932	Insulator Insulator with spiral or helical grooves to all rain to wash the surface better	STROUP, Charles L.	Spiral
		1933
U	1,892,798	January 3, 1933	Cable Rider Cable support tray (specimens are not uncommon to find)	ELMER, William B. AVILA, Charles F.	Miscellaneous	Charles B. Elmer
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.
		1934
U	1,954,592	April 10, 1934	Wire Support Wireholder	KLINGEL, Edward L.	Wireholder
U	1,955,609	April 17, 1934	Insulator U-856A fogbowl	ROWLAND, Davidge H.	Insulator	Locke Insulator Corp.
		1935
U	2,022,386	November 26, 1935	Conductor Support Little bracket with insulator crown to hold low voltage wire attached to a wood pole (see 2,198,839)	PITTMAN, Ralph R.	Miscellaneous
		1937
U	2,088,433	July 27, 1937	Fog and Dust Insulator U-816 series	PLIMPTON, Bentley A.	Insulator	Locke Insulator Corp.
		1940
U	2,191,152	February 20, 1940	Electrical Insulator CD 240.2 with metal saddle embedded in crown for RFI (see 2,089,791)	HAMMEL, Victor F.	Insulator
U	2,191,171	February 20, 1940	Insulator Wireholder with lag screw	LEE, Leffman H. GUTHRIE, James M.	Wireholder	Line Material Co.
		1941
U	2,237,717	April 8, 1941	Insulator Structure Wireholder with multiple grooves and lag screw	STEWART, Lory B. STEWART, Alvin J.	Wireholder	1/3 to Karl Thielscher
D	126,722	April 22, 1941	Design for a Line Insulator Surge fence knob	SCHILLING, Lorell John	Knob	Babson Brothers Co.
U	2,266,400	December 16, 1941	Insulator CD 216	REED, Frederick F.	Insulator
		1942
U	2,286,488	June 16, 1942	Spool Insulator Spool insulator with deep side groove	JOHNSON, Lewis E.	Spool	Porcelain Products, Inc.
		1944
U	2,343,576	March 7, 1944	Support for Electric Conductors Knob	PITTMAN, Ralph R.	Knob
		1945
U	2,372,995	April 3, 1945	Tap-Isolating Conductor Support miscellaneous	WHITMORE, Paul G.	Miscellaneous
		1946
U	2,406,095	August 20, 1946	Insulator Dry-spot	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
		1960
U	2,921,112	January 12, 1960	Electric Conductor Strand Separator Insulator Spacer for conductors	DYKSTRA, Laurence J. GRILLS, Lee J.	Spacer	The Porcelain Insulator Corp.

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