Search the Insulator Patent Reference Library:

Total of 194 patents found where: Category is 'Pin';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1870
U	105,834	July 26, 1870	Improvement in Telegraph Insulators Pin hole tapered with grooves to receive wedged, split-end pin	OAKMAN, Samuel	Pin
		1872
U	125,980	April 23, 1872	Improvement in Screw Cutting Device Insulator pin threading device	NORTH, Stephen	Pin
		1882
U	255,800	April 4, 1882	Insulator for Electrical Conductors Pin hole with spiral slot to receive pin with side knob	LEWIS, Albert C.	Pin
U	267,434	November 14, 1882	Lathe for Turning Insulator Pins Lathe for turning out wooden insulator pins.	KURTZ, Jacob S.	Pin
		1883
U	278,618	May 29, 1883	Machine for Making Brackets for Telegraph Insulators Machine to turn wooden insulator pin brackets	SMITH, John B.	Pin	Charles N. Freeman & David W. O'Neil
U	278,619	May 29, 1883	Machine for Making Telegraph Insulator Pins Machine to turn wooden insulator pins	SMITH, John B.	Pin	Charles N. Freeman & David W. O'Neil
		1884
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.	Pin
U	297,677	April 29, 1884	Device for Attaching Telegraph Wires to Posts and Insulating Them Therefrom Steel pin with lag screw and holder for insulator	COTTRELL, Herbert	Pin
U	297,699	April 29, 1884	Pin for Electric Insulators Pin with thimble of soft metal mounted on end of metal pin	KLEIN, John M.	Pin
U	297,865	April 29, 1884	Machine for Making Insulator Pins Machine to turn wooden insulator pins	SNEE, William	Pin	1/2 to Milton A. Walton
U	298,543	May 13, 1884	Machine for Turning Insulator Pins Machine to turn wooden insulator pins	BALDWIN, Joseph A.	Pin
U	303,261	August 12, 1884	Cap for Telegraph and Telephone Poles Pin designed to cover top of pole to protect the pole from weather	BROOMHALL, George L.	Pin
		1885
U	310,931	January 20, 1885	Device for Securing Electric Wires to Poles Pin with plate flange to wrap around pole without drilling a hole	BLOOMHALL, George L.	Pin
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	330,173	November 10, 1885	Means for Supporting Electrical Wires Pin split with metal cap to hold wire	TRINGHAM, John Watson	Pin
		1886
U	350,843	October 12, 1886	Machine for Manufacturing Insulator Pins for Telegraphic Purposes Machine for turning wooden insulator pins	ROGERS, Charles	Pin
		1887
U	360,215	March 29, 1887	Automatic Lathe Insulator pin threading device	FISHER, Frank E.	Pin
U	326,268	May 3, 1887	Machine for Turning Insulator Pins Machine for cutting the screw thread on wooden pins (missing the 4th page)	FROST, Lewis D.	Pin
		1888
U	386,986	July 31, 1888	Electric Insulator Peg Pin (wooden) tapered below threads & to have metal rod inserted, too	JOSLIN, William E.	Pin
		1892
U	472,529	April 12, 1892	Insulator Support Pin (metal) with wooden cob for glass insulators	DOREN, Dennis	Pin
U	476,207	May 31, 1892	Insulator Pin Pin	LOCKE, Fred M.	Pin
		1893
U	493,434	March 14, 1893	Insulator Pin Pin base - hollow cast iron with wood threaded cob (dates metal base)	LOCKE, Fred M.	Pin	1/2 to G. Paddock & W. Page
U	505,123	September 19, 1893	Insulator Pin Pin (wooden) strengthened by metal rod	O'NEILL, James J.	Pin
U	505,309	September 19, 1893	Insulator Pin and Bracket Machine Pin - machine for making wooden pins	EISENHART, Charles A.	Pin
U	510,809	December 12, 1893	Insulator Pin Pin	LOCKE, Fred M.	Pin	1/2 to G. Paddock & W. Page
		1894
U	514,221	February 6, 1894	Insulator Pin sleeve	GRAY, Lawrence B.	Pin
U	524,100	August 7, 1894	Supporting Insulator for Electric Wires Pin	BEARDSLEY, Lauren S.	Pin
U	527,318	October 9, 1894	Insulator Pin Pin, wooden with internal reinforcing metal bar	BULLOCK, Edward J.	Pin	1/2 to Merwin Tuttle
		1895
D	24,190	April 9, 1895	Design for an Insulator Holder Pin with lag screw for insulator	BEARDSLEY, Lauren S.	Pin
D	24,249	April 23, 1895	Design for an Insulator Holder Pin	BEARDSLEY, Lauren S.	Pin
U	547,660	October 8, 1895	Insulator Pin and Insulator Pin through crossarm for insulator top & bottom of crossarm	CARROLL, Charles F.	Pin	1/2 to Thomas Scott
U	548,669	October 29, 1895	Insulator Pin Pin with threaded wooden cone and steel bolt	STEPHEN, Charles Wm.	Pin
		1896
U	554,664	February 18, 1896	Means for Supporting and Insulating Electric Conductors Pin coated with water repelling material	ECKERT, Thomas T.	Pin
U	557,600	April 7, 1896	Insulator Pin with spring coil	PETERSON, Cyrus A.	Pin
U	565,944	August 18, 1896	Insulator Support Pin	TOWARD, Charles P.	Pin
U	566,468	August 25, 1896	Insulator Support Pin with flange contacting inner petticoat for support	OLIVER, James B.	Pin	The Oliver Iron & Steel Co.
		1898
U	609,288	August 16, 1898	Means for Fastening Insulator Pins to Crossarms Pin, wooden with friction device to hold it in the crossarm	MITCHELL, Loron	Pin
		1899
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)	MENZEL, Werner	Pin
		1901
U	685,776	November 5, 1901	Insulator Support Pin sleeve plug with bolt to draw down & expanding sleeve in pin hole	LOCKE, Fred M.	Pin
U	687,230	November 26, 1901	Insulator Support Pin with split threads	HALLETT, Thomas E.	Pin
		1902
U	698,976	April 29, 1902	Sleeve for Protecting Insulator Pins Pin sleeve to protect pin	LOCKE, Fred M.	Pin
U	700,570	May 20, 1902	Insulator Supporting Arm Pin assembly for crossarm	SHARPE, John E.	Pin	1/2 to Newton Bartle
U	701,063	May 27, 1902	Insulator Pin Pin	LOCKE, Fred M.	Pin
U	701,246	May 27, 1902	Insulator Pin and Bracket Pin and bracket for crossarm	BAILEY, Elbert T.	Pin
U	710,297	September 30, 1902	Insulator Pin with split wooden cob around curved metal bracket	PEIRCE, Ralph S.	Pin
		1903
U	726,651	April 28, 1903	Electric Wire Support Glass insert in crossarm to insulate a steel pin that supports the conductor	CULLEN, Beauregard	Pin
U	740,005	September 29, 1903	Insulator Bracket Pin, wood pin bracket side with V-groove fits rounded pole to keep it vertical	GILLILAND, James F.	Pin	Albert B. Dick
		1904
U	750,209	January 19, 1904	Automatic Turning Machine Insulator pin threading device	MAGERS, Bonneventure T.	Pin	The Indianapolis Arm, Bracket and Pin Co.
U	751,831	February 9, 1904	Insulator Pin Pin (metal) with webs and circular member to support inside surface of skirt	BULLARD, James H.	Pin
U	751,841	February 9, 1904	Thread Cutting Machine Insulator pin threading device	ENSIGN, George A.	Pin	Defiance Machine Works
U	754,123	March 8, 1904	Insulator Pin Pin (metal) with webs made to reduce weight	BULLARD, James H.	Pin
U	758,179	April 26, 1904	Supporting Pin for Line Insulators Steel pin with porcelain base and metal cap	HILLIARD, JR., John D.	Pin
U	772,553	October 18, 1904	Insulator Pin Pin (metal) composed of bars or rods attached to a metal plate	BULLARD, James H.	Pin
U	775,812	November 22, 1904	Insulator Support Pin design made from sheet metal with partial threads on one side	FAIRBANKS, Ernest Hayward	Pin
U	778,005	December 20, 1904	Electric Insulator Pin hole with groove inside of pin hole & on pin	BOOKER, Charles	Pin
		1905
U	779,828	January 10, 1905	Insulator Pin Pin composed of bolt and threads formed in split metal tube	WOOD, Montraville M.	Pin	General Electric Co.
U	783,230	February 21, 1905	Insulator Support Steel pin supporting Electrose cover composed of threads and gutter at the bottom for transmitting water away from pin	STEINBERGER, Louis	Pin
U	794,645	July 11, 1905	Insulator Bracket for Telephone Poles, etc. Wire device to secure a side pin to a pole	SPRINGEN, Knudt G.	Pin
U	796,977	August 8, 1905	Insulator Pin Pin	LOCKE, Fred M.	Pin
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	806,887	December 12, 1905	Insulator Pin Pin (metal) with ribbed cast iron base	GODDARD, Walter T.	Pin	Locke Insulator Mfg. Co.
		1906
U	814,613	March 6, 1906	Insulator Pin Pin (metal) bracket using split sheet metal threads	MACKEAN, Frank	Pin
U	816,981	April 3, 1906	Cross Arm for Electric or Signal Wires Pin mounted under the crossarm and curving upward to hold the insulator	ILIOHAN, Anthony H.	Pin
U	821,746	May 29, 1906	Insulator Pin - method of cementing into insulator sleeve and attaching to insulator	RICHARD, Augusto	Pin	Societa Ceramica Richard-Ginori
U	823,461	June 12, 1906	Insulator Pin Pin (metal) made of wire loops and sliding grooved, ribbed bar for threads	BULLARD, James H.	Pin
U	836,122	November 20, 1906	High Potential Insulator Pin of bolt (tapered) in tapered hole (see 685,776)	LOCKE, Fred M.	Pin
		1907
U	840,369	January 1, 1907	Automatic Lathe Insulator pin threading device	PRINGLE, George W.	Pin	E. J. Noblett
U	848,506	March 26, 1907	Insulator Pin and Support Therefor Pin made of Electrose	STEINBERGER, Louis	Pin
U	851,577	April 23, 1907	Cross Arm Pin Steel pin with clips at the bottom to secure the pin and ribs at the top to prevent turning	WEAVER, David	Pin
U	853,743	May 14, 1907	Insulating Device Pin made of Electrose with flange on bottom	STEINBERGER, Louis	Pin
U	855,253	May 28, 1907	Insulator Pin Pin with hollow cast iron cone and thimble	LEE, JR., William States	Pin
U	855,261	May 28, 1907	Insulator Pin Pin made of Electrose with flanges	STEINBERGER, Louis	Pin
U	856,488	June 11, 1907	Insulator Pin (metal) using spring for threads	PEIRCE, JR., Charles L.	Pin	Peirce Specialty Co.
U	856,801	June 11, 1907	Insulator Pin (metal) using spring for threads	PEIRCE, JR., Charles L.	Pin	Peirce Specialty Co.
U	857,101	June 18, 1907	Cross Arm for Towers Cross arm with pins for insulators made of hollow cylindrical steel similar to pipe	NOYES, La Verne W.	Pin
U	871,490	November 19, 1907	Insulator Pin Mounting Mounting for hollow steel pin on a steel tower	DUNCAN, John D. E.	Pin
U	873,700	December 10, 1907	Rotating Bracket for the Suspension of Electric Wires Steel pin that will swing horizontally when line wire is brushed by movement of tree limbs	BUCKBEE, Charles E.	Pin
		1908
U	875,902	January 7, 1908	Means for Insulating the Supports of Electric Conduits Use of multiple caps made of paper, felt, etc. over the threads of a pin in order to make the insulator fit tight on the pin and provide additional insulation	EGNER, Carl Emil	Pin
U	877,242	January 21, 1908	Insulator Pin Pin with metal shank and bolt	SNAPP, Delos V. FRAHER, Charles W.	Pin
U	878,679	February 11, 1908	Support for Insulators Pin, cast iron with U-bolt to clamp on crossarm (Smith-Grip pin)	SMITH, William N.	Pin
U	878,870	February 11, 1908	Insulator Support Pin with metal shank and bolt	CREAGHEAD, Thomas J.	Pin
U	882,424	March 17, 1908	Insulator Pin Pin using nail to prevent it from turning	SCHARFHAUSEN, William	Pin	Payette Insulator Pin Co.
U	883,823	April 7, 1908	Insulator Support Pin with coiled spring for threads	PEIRCE, JR., Charles L.	Pin	Peirce Specialty Co.
U	894,201	July 28, 1908	Insulator Pin with a threaded wooden block making up one-half of the thimble and metal projection on the other side contacting the threads to keep the wooden half pressed against the pinhole	HALLETT, Thomas E.	Pin
U	905,414	December 1, 1908	Metallic Insulator Pin Pin, split metal	ETTE, Charles G.	Pin	Ette Investment Co.
U	906,003	December 8, 1908	Insulator Pin Pin (metal) with split threads for cushion material and wedge end in crossarm	ETTE, Charles G.	Pin	Ette Investment Co.
U	906,787	December 15, 1908	Insulator Pin Pin, metal with wood cob and flange to nail to crossarm	ETTE, Charles G.	Pin	Ette Investment Co.
		1909
U	910,799	January 26, 1909	Insulator Pin Pin (metal) split & bent on each end to hold thimble on pin & pin in crossarm	EDMISTON, Samuel J.	Pin
U	927,701	July 13, 1909	Insulator Support Pin bracket (metal) for insulator on crossarm	WOODMANSEE, Fay	Pin	John Porter and Electric Service Supplies Co.
U	932,570	August 31, 1909	Supporting Pin for Insulators Pin, metal mounted to side of pole	PERRINE, Frederic A. C.	Pin
U	937,140	October 19, 1909	Non-detachable Insulator Pin permanently fixed to the insulator via slotted pinhole	BARTLETT, Harry MACCALLUM, Alexander P.	Pin
U	937,515	October 19, 1909	Insulator Pin Pin (metal) with hollow threaded end	DORFF, Conrad J.	Pin	Fredric Greer
U	937,736	October 19, 1909	Insulator Pin with spring to fit into threads	DUMBOLTON, Perry S. FRANZ, Frank	Pin
		1911
U	985,707	February 28, 1911	Insulator Support Pin of bent metal with flat clips to screw in threads in insulator	SCHEIBLE, Albert	Pin
U	995,123	June 13, 1911	Insulator Pin Pin, metal with threaded bushing	ETTE, Charles G.	Pin	Ette Investment Co.
U	998,073	July 18, 1911	Electric Insulator Pin, metal split, hollow threads and cushion material in the split	CHAFFIN, George W.	Pin
U	1,001,561	August 22, 1911	Automatic Wood Turning Machine Automatic machine for turning wooden table and chair legs, handles, croquet balls, mallets, etc.	SMITH, Thomas Darling	Pin
		1912
U	1,013,250	January 2, 1912	Insulator Pin Pin for mine insulator comprised of split sheet metal	WILSON, Walter J.	Pin
U	1,022,121	April 2, 1912	Insulator Pin Pin, metal with barbs to hold it in hole in crossarm	BOYLAND, Clarence Joseph	Pin
U	1,026,711	May 21, 1912	Sheet Metal Insulator Pin Pin, metal composed of three flat strips	SHOVER, Barton R.	Pin
U	1,027,708	May 28, 1912	Metallic Crossarm for Poles Metal crossarm with metal pins	ETTE, Charles G.	Pin	Ette Investment Co.
U	1,027,709	May 28, 1912	Pole Cross Arm Metal crossarm with metal pins	ETTE, Charles G.	Pin	Ette Investment Co.
U	1,027,710	May 28, 1912	Pole Cross Arm Metal crossarm with metal pins	ETTE, Charles G.	Pin	Ette Investment Co.
U	1,027,711	May 28, 1912	Pole Cross Arm Metal crossarm with metal pins	ETTE, Charles G.	Pin	Ette Investment Co.
U	1,027,712	May 28, 1912	Insulator Supporting Device Metal pin to clamp around metal crossarm with hinged side part	ETTE, Charles G.	Pin	Ette Investment Co.
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	1,048,706	December 31, 1912	Bracket for Current Conducting Wires Side pin with notch cut out to allow a splice to pull through before mounting wire on the glass insulators	KLEINHESSELINK, Arie	Pin
		1913
U	1,065,983	July 1, 1913	Insulator Pin (metal) formed from sheet metal	STOCKWELL, Millard E.	Pin
		1914
U	1,094,852	April 28, 1914	Insulator Pin Pin, metal flanged to fit crossarm and interior bolt for attachment to thimble	HECHT, Julius L. GAPEN, Jotham C.	Pin	1/2 to Electric Service Supplies Co.
U	1,095,860	May 5, 1914	Insulator Holder Pin composed of metal wire	HEFFNER, Herman C.	Pin
U	1,110,495	September 15, 1914	Insulator Support Pin, pressed metal to form bin and support	KOBERT, Frank P.	Pin	Barnes & Kobert Mfg. Co.
U	1,110,496	September 15, 1914	Insulator Support for Electric Wires Pin and metal bracket to fit around crossarm	KOBERT, Frank P.	Pin	Barnes & Kobert Mfg. Co.
		1915
U	1,143,983	June 22, 1915	Insulator Support Pin with metal spring coil of varying diameter for threads	MILLER, Charles E.	Pin
U	1,158,149	October 26, 1915	Insulator Support Pin, metal with spring for threads (improvement on 856,488)	PEIRCE, JR., Charles L.	Pin
		1916
U	1,167,041	January 4, 1916	Insulator Support Pin, split metal bolted together below threads	BOOZER, Ralph C.	Pin	Joslyn Mfg. & Supply Co.
U	1,171,126	February 8, 1916	Insulator Pin Pin, sheet metal formed cone and threads	LINDHOLM, John G. S. LINDHOLM, Anders P.	Pin	Anders P. Lindholm
U	1,171,127	February 8, 1916	Metallic Cross Arm Pin Pin, sheet metal formed ribs and threads	LINDHOLM, John G. S.	Pin	Anders P. Lindholm
U	1,174,607	March 7, 1916	Insulator Supporting Pin Pin, metal threaded to receive metal bushing cemented in insulator	PEIRCE, JR., Charles L.	Pin
U	1,176,333	March 21, 1916	Insulator Pin Pin formed of sheet metal fitting around crossarm	BAKER, Jason	Pin
U	1,184,963	May 30, 1916	Insulator Pin Pin, metal with circular groove to receive threaded wooden pin	KENNEDY, Matthew G.	Pin
U	1,192,690	July 25, 1916	Insulator Supporting Structure Pin (metal) for mounting on crossarm in combination with a threaded thimble	SCHAAKE, William	Pin	Westinghouse Electric & Mfg. Co.
U	1,196,272	August 29, 1916	Insulator Pin Pin, metal with sheet metal support cone and threads	PEIRCE, JR., Charles L.	Pin	1/2 to Hubbard & Co.
U	1,196,273	August 29, 1916	Cross Arm Saddle Saddle for pin that fits on top of crossarm	PEIRCE, JR., Charles L.	Pin	1/2 to Hubbard & Co.
U	1,199,735	September 26, 1916	Insulator Pin Pin, metal to prevent turning of threaded head (improvement of 1,094,852)	PORTER, John W.	Pin	Electric Service Supplies Co.
U	1,201,295	October 17, 1916	Insulator Support Pin, cast metal with lag screw	HENDEE, Lem E.	Pin
U	1,202,418	October 24, 1916	Insulator Support Pin, metal with bolting bracket and threaded for cementing type thimble	PEIRCE, JR., Charles L.	Pin	1/2 to Hubbard & Co.
U	1,202,419	October 24, 1916	Insulator Supporting Pin Pin, metal with bolting bracket and spring for threads	PEIRCE, JR., Charles L.	Pin	1/2 to Hubbard & Co.
U	1,202,885	October 31, 1916	Insulator Pin Pin, metal with bolting bracket and spring for threads	PEIRCE, JR., Charles L.	Pin	1/2 to Hubbard & Co.
U	1,204,196	November 7, 1916	Adjustable Support for Insulators Pin made of two parts and loop on one end to clamp the insulator.	SCHULZ, Rudolf W.	Pin
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.
		1917
U	1,219,746	March 20, 1917	Insulator Bracket Pin, side pin type made of sheet metal	KEPPLER, Lewis F.	Pin
		1918
U	1,258,816	March 12, 1918	Insulator Pin Steel pin with conical support base that fits in grooved steel base that fits over the top of the crossarm	ROSENFELD, Mortimer C.	Pin
		1920
U	1,328,732	January 20, 1920	Insulator Pin Improvement of the Lee pin (see 855,253) to allow adjustment of the insulator	HARMS, Rhinehart W.	Pin	The R. Thomas & Sons Co.
U	1,361,948	December 14, 1920	Insulator Pin with spring wire extending beyond edge of bottom pin hole	WIDMYER, James L.	Pin
		1921
U	1,381,838	June 14, 1921	Insulator Support Steel pins for crossarm made from one metal rod integral to the wooden crossarm and acts a braces for the crossarm.	JACKSON, Berry B.	Pin
U	1,385,638	July 26, 1921	Supporting Bracket Steel pin with lag screw and spring for threads	MILLER, Charles E.	Pin
		1922
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.
		1923
U	1,444,434	February 6, 1923	Insulator Supporting Pin Pin with corkscrew for threading into bottom of Electrose insulator	STEINBERGER, Louis	Pin
U	1,468,043	September 18, 1923	Insulator Supporting Pin Electrose pin	STEINBERGER, Louis	Pin
		1925
U	1,525,229	February 3, 1925	Means for Mounting Insulator Pins Steel pin and bracket for mounting on a crossarm with a clamping system not dependent on the size of the crossarm	COTTON, Charles S.	Pin
U	1,528,580	March 3, 1925	Insulator Pin Unique hollow steel pin with bottom halves that widen when the insulator is screwed down on the pin thus gripping the hole in the crossarm and securing the pin and allowing a tap wire to run from the line conductor down through the center of the pin	STAUB, Arthur J.	Pin
U	1,546,591	July 21, 1925	Cushion Head Insulator Pin Threads on a pin made of soft metal wire such as lead	KYLE, William D.	Pin	Line Material Co.
U	1,556,570	October 6, 1925	Impregnated Wood and Process of Treating Wood Treating wood pins and the like under high temperature with Montan wax and a solvent that penetrates the grain and protects it from weather and decay	COOLIDGE, Joseph R.	Pin	Montan, Inc.
U	1,562,836	November 24, 1925	Pin for Insulators Pin with 3 or 4 soft-metal ribs that form threads to screw into the insulator	KYLE, William D.	Pin	Line Material Co.
		1926
U	1,583,462	May 4, 1926	Supporting Pin for Insulators Pin bracket that fits around and bolts to crossarm	HENDEE, Lem E.	Pin	Line Material Co.
U	1,586,642	June 1, 1926	Insulator Pin Steel pin and bracket combination stamped out of sheet metal and bolted around the crossarm	ARNDT, John P.	Pin
U	1,591,883	July 6, 1926	Insulator Pin Steel pin with lag screw and spring for threads	PEIRCE, JR., Charles L.	Pin
U	1,603,003	October 12, 1926	Fixing Means for Bolts Steel pin designed with flanges on top and bottom of hole bored in crossarm to keep out water	ENNIS, William F.	Pin
U	1,609,124	November 30, 1926	Insulator Support Insulator pin and support bracket made of pressed metal or steel	PEIRCE, JR., Charles L.	Pin
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.
		1928
U	1,657,340	January 24, 1928	Insulator Pin Steel pin with base support on crossarm	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,657,341	January 24, 1928	Insulator Pin Steel pin with base support on crossarm	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,670,429	May 22, 1928	Pin for Insulators Steel pin and bracket combination stamped out of sheet metal and bolted around the crossarm	ARNDT, John Philip	Pin
U	1,682,590	August 28, 1928	Insulator Pin and Process of Manufacturing the Same Method of making a pin with a threaded lead head	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,687,556	October 16, 1928	Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins CD 122.4; Metal thread thimble for wooden pins carrier circuits connected electrically to other pins or brackets on the same crossarm to reduce leakage losses	GORDON, Chester S. LOWE, James T.	Pin	American Telephone & Telegraph Co.
U	1,690,392	November 6, 1928	Insulator Pin Steel insulator pin	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,690,596	November 6, 1928	Insulator Pin Steel pin with saddle and U-bracket to secure to the crossarm	SEYLER, Carl P.	Pin
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.	Pin
U	1,696,861	December 25, 1928	Insulator Supporting Pin Hollow steel pin, cast iron base resting on crossarm, and bolt to attach to crossarm	PLIMPTON, Bentley A.	Pin	Locke Insulator Corp.
		1929
U	1,702,237	February 12, 1929	Process of Manufacturing Insulator Pins Easily manufactured steel pin	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,712,860	May 14, 1929	Transposition Pin Pin (metal) through crossarm for transposition	WEIMAR, Robert	Pin
U	1,715,507	June 4, 1929	Insulator Mounting Steel pin with malleable threaded thimble and coil spring for threads to contact the insulator pinhole	KYLE, William D.	Pin	Line Material Co.
U	1,729,702	October 1, 1929	Insulator Supporting Means Metal threaded thimble that can be attached to a steel pin	BRADY, Edmund W.	Pin	The Brady Electric & Mfg. Co.
U	1,738,875	December 10, 1929	Insulator Pin Wooden pin strengthened with a metal collar	DUFFY, Ralph E.	Pin
		1930
U	1,743,552	January 14, 1930	Pin Type Insulator Pin with sharp pointed threads that engage the insulator only at the tips of the threads and insulator with shallow depressions in the pinhole rather than threads	KERSCHNER, Richard M.	Pin	Hubbard & Co.
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	1,750,769	March 18, 1930	Insulator Pin Steel pin with rolled threads and support on top of crossarm	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,750,770	March 18, 1930	Insulator Pin Steel pin with supporting base that fits over top and edge of wooden crossarm	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
		1931
U	1,793,191	February 17, 1931	Insulator Pin Hollow steel pin that can be rotate to align conductor and secured with a keeper pin	PLIMPTON, Bentley A.	Pin	Locke Insulator Corp.
U	1,797,238	March 24, 1931	Insulator Mounting Pin Pin with threaded lead head for screwing into an insulator	LEMONT, Clarence J.	Pin	Line Material Co.
U	1,807,878	June 2, 1931	Insulator Supporting Post Steel pin with sheet metal threads	SEYLER, Carl P.	Pin
U	1,829,926	November 3, 1931	Insulator Pin Steel pin with saddle that fits over a curved-top crossarm	HAWLEY, Kent A.	Pin	Locke Insulator Corp.
U	1,832,240	November 17, 1931	Insulator Pin and Method of Making Same Hollow forged steel pin with base support, bolt, and means to keep out water	PLIMPTON, Bentley A.	Pin	Locke Insulator Corp.
		1932
U	1,863,539	June 14, 1932	Pole Top Pin Steel pin with strap to attach to top of pole	HAWLEY, Kent A.	Pin	Locke Insulator Corp.
U	1,880,766	October 4, 1932	Support for Insulators Steel pin with waterproof fiber threads and cone cover	BURKE, Edmund	Pin	Brown Company
		1933
U	1,894,340	January 17, 1933	Insulator Pin Pin with soft metal threads	AUSTIN, Arthur O.	Pin	The Ohio Brass Co.
U	1,911,031	May 23, 1933	Insulator Support Steel pin, support base, and threads made of a spring coil	MILLER, Charles E.	Pin	Hubbard & Co.
U	1,911,558	May 30, 1933	Insulator Pin Steel pin with threads made of a spring coil	DRIGGS, Lorenzo J.	Pin	Frank F. Winters
U	1,912,007	May 30, 1933	Insulator Pin Steel pin and externally threaded steel cone support securely mounted to the crossarm	PLIMPTON, Bentley A. HAWLEY, Kent A.	Pin	Locke Insulator Corp.
		1934
U	1,960,681	May 29, 1934	Insulating Support Pin Steel pin with malleable thread thimble with limited contact with the pin to aid in cushioning insulator	PEIRCE, JR., Charles L.	Pin	1/2 to Hubbard & Co.
		1936
U	2,032,017	February 25, 1936	Sheet Metal Insulator Support Pin and Method of Making the Same Steel sheet metal pin easily manufactured	HOCHER, Andrew A. LASHER, Marshall	Pin	Hubbard and Co.
		1937
U	2,082,220	June 1, 1937	Insulator Supporting Pin Pin with soft metal thimble threaded only at the bottom and ridge at the top to engage the threads	SEXTON, Frederick P.	Pin
U	2,082,507	June 1, 1937	Pole for Pin Pole top pin with hook to support wire during stringing	PITTMAN, Ralph R.	Pin
U	2,096,613	October 19, 1937	Multithread Pin Insulator Assembly Pin with threaded malleable thimble that screws onto the steel pin allowing each adjustment of insulator with conductor	HILL, Gregory C.	Pin	Locke Insulator Corp.
		1938
U	2,106,667	January 25, 1938	Mounting of Electric Insulators Use of an elastic ring around pin to absorb tension and strain to prevent breaking insulator	THIRY, Leon	Pin
		1941
U	2,228,804	January 14, 1941	Insulator Pin Pin made of Bakelite and nailed underneath the crossarm	ADAMS, Basil R. S.	Pin
U	2,260,917	October 28, 1941	Insulator Pin Steel pin with flanges to fit in top and bottom of hole drilled for larger wooden pins	RUGGIERI, Michael	Pin	Line Material Co.
		1942
U	2,297,600	September 29, 1942	Insulator Support Steel pin for carrier circuits with threads coated with rubber	WILLIAMS, Richard H.	Pin	The B. F. Goodrich Co.
		1944
U	2,345,404	March 28, 1944	Reinforced Insulator Pin Steel pin with sheet metal reinforcing down to crossarm to provide bracing against horizontal strain	MACK, Edward A.	Pin	Oliver Iron & Steel Corp.
		1950
U	2,500,927	March 21, 1950	Insulator Pin Pin that is light-weight composed of magnesium and aluminum	CASE, Rogers	Pin	Transadean Associates, Inc.
U	2,500,928	March 21, 1950	Insulator Support Pin that is light-weight composed of magnesium and aluminum with split end	CASE, Rogers	Pin	Transadean Associates, Inc.
		1952
U	2,592,698	April 15, 1952	Insulator Supporting Pin and Cob Steel pin with threaded cob made of cellulose acetate butyrate molded into threads (see reissue 23,885 on 10-5-1954)	HUBBARD, David C.	Pin	A. B. Chance Co.
		1954
R	23,885	October 5, 1954	Insulator Supporting Pin and Cob Steel pin with threaded cob made of cellulose acetate butyrate molded into threads (reissue of 2,592,698)	HUBBARD, David C.	Pin	A. B. Chance Co.
		1960
U	2,947,802	August 2, 1960	Insulator with Cap in Socket Pin covered with plastic cap to more securely hold the insulator on the pin	WORTMANN, Adolf	Pin

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