Search the Insulator Patent Reference Library:

Total of 108 patents found where: Residence is 'Baltimore, MD';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1866
U	52,411	February 6, 1866	Improvement in Lightning Rods Lightning rod made with a center copper core and outer layer of iron	HAWLEY, Louis J.	Lightning Rod
		1872
U	129,465	July 16, 1872	Improvement in Battery Insulators Battery insulator shaped to fit hole in table & flat to support battery	DAVIS, Augustus G.	Battery
		1873
U	136,191	February 25, 1873	Improvement in Insulators for Battery Cups Battery insulator cup to collect moisture or acid	THOMAS, James H.	Battery	1/2 to A. G. Tomay
		1874
U	153,101	July 14, 1874	Improvement in Piano Sound Insulating Attachments Glass insert in a piano leg with hole for mounting a caster wheel	MILLER, William R.	Piano
U	155,099	September 15, 1874	Improvement in Insulators for Musical Instruments Insulator mounted between the top of the piano leg and the piano	MILLER, William R.	Piano
		1875
U	159,342	February 2, 1875	Improvement in Piano Insulators Insulator mounted between the top of the piano leg and the piano	MILLER, William R.	Piano
		1884
U	298,543	May 13, 1884	Machine for Turning Insulator Pins Machine to turn wooden insulator pins	BALDWIN, Joseph A.	Pin
U	305,020	September 9, 1884	Insulator for Lightning Rods Lightning rod insulator of two interlocking parts	RUTH, John Anthony	Lightning Rod Insulator
		1889
U	406,681	July 9, 1889	Lightning Rod Coupling with flat resilent spring between the sections	WATTS, John Henry Charles	Lightning Rod Coupling
		1894
U	527,254	October 9, 1894	Insulator Cleat - 2 piece	TRIMBLE, William D.	Cleat
		1896
U	572,285	December 1, 1896	Battery Cell Battery cell	WILLMS, Charles	Battery
		1902
U	693,603	February 18, 1902	Third Rail Insulator for Electric Railways Square third rail insulator with metal foot and metal cap that fit in a square hole in top and bottom of the insulator.	HOBBS, Charles M.	Third Rail	1/2 to Harold P. Brown
		1912
U	1,019,451	March 5, 1912	Sectional Insulator The GE breakaway insulator, M-2202 or M-2505, is shown in the catenary design	GILLETTE, John C.	Sectional Insulator	General Electric Co.
		1914
U	1,097,392	May 19, 1914	Battery Box Support and Insulator Battery rest insulator with screw to hold under foot of table	CREMER, August C. MOLANDER, Gustaf F.	Battery
		1917
U	1,221,225	April 3, 1917	Floor Protecting Attachment for Furniture Cup of wood or rubber to hold caster wheel and sheet metal insert to secure caster from movement	SCHAUERMANN, Edward	Piano	The Hold Fast Caster Cup Co.
		1924
U	1,501,107	July 15, 1924	Method of Connecting Insulator Parts Method of making a cement impervious to water	GOUVERNEUR, Minor F. H.	Cement	Locke Insulator Corp.
		1925
U	1,544,148	June 30, 1925	Method of Connecting Insulators Multipart, method of cementing sections with solder	GOUVERNEUR, Minor F. H.	Multipart	Locke Insulator Corp.
		1928
U	1,657,924	January 31, 1928	Chain Link for Insulators Link for Hewlett suspension insulator	GOUVERNEUR, Minor F. H. GOUVERNEUR, Fairfax H.	Suspension	Locke Insulator Corp.
U	1,684,441	September 18, 1928	High Tension Insulator Suspension with special ribbed cap and pin	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
U	1,687,759	October 16, 1928	Insulator Knurling Device Manufacturing method of cutting inside of multipart joints to aid cement adhesion	GOUVERNEUR, Minor F. H.	Manufacturing	Locke Insulator Corp.
U	1,690,291	November 6, 1928	Insulator Suspension flying saucer type with special link design	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
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	1,697,422	January 1, 1929	Device for Cutting Holes in Insulators Device for cutting holes in Hewlett type suspension disks for links	GOUVERNEUR, Minor F. H.	Manufacturing	Locke Insulator Corp.
U	1,697,423	January 1, 1929	Method and Device for Cutting Holes in Insulators Manufacturing method of cutting holes in Hewlett type suspension disks for links	GOUVERNEUR, Minor F. H.	Manufacturing	Locke Insulator Corp.
U	1,697,434	January 1, 1929	Hole Cutting Machine Machine for cutting holes in Hewlett type suspension disks for links	MOORE, JR., Stewart L.	Manufacturing	Locke Insulator Corp.
U	1,697,435	January 1, 1929	Hole Cutting Machine Machine for cutting holes in Hewlett type suspension disks for links	MOORE, JR., Stewart L.	Manufacturing	Locke Insulator Corp.
U	1,699,063	January 15, 1929	Method of Making Insulators Suspension insulator, method to attach skirts to a central shank	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
U	1,700,066	January 22, 1929	Insulator for Radio Frequency Currents Radio strain insulator made from Pyrex glass for antennas	MARSHALL, Albert E.	Radio	Corning Glass Works
U	1,706,488	March 26, 1929	Insulator Fogbowl via metal pan under skirt	HAWLEY, Kent A.	Fog Type	Locke Insulator Corp.
U	1,712,556	May 14, 1929	Insulator Suspension Link Suspension links for Hewlett disks that are ductile and pliable	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
U	1,712,557	May 14, 1929	Link Liner Ductile and pliable liner for the holes in Hewletts to cushion link contact	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
U	1,712,900	May 14, 1929	Method of Making Forged Insulator Caps Method to manufacture steel cap for suspension disks	OSBORNE, David H.	Manufacturing	Locke Insulator Corp.
U	1,714,814	May 28, 1929	Pole Bracket Steel bracket for pole top that supports insulator pin on side of pole	PLIMPTON, Bentley A.	Bracket	Locke Insulator Corp.
U	1,719,989	July 9, 1929	Method of and Apparatus for Assembling Insulators Method of assembling the shells, holding downward pressure, and vibrating to settle cement around the shells to eliminate air	MOORE, JR., Stewart L.	Manufacturing	Locke Insulator Corp.
U	1,733,729	October 29, 1929	Method of Casting Link-Type Insulators Manufacturing method to cast Hewlett type suspension disks	GOUVERNEUR, Minor F. H. STEVENS, Frank J.	Manufacturing	Locke Insulator Corp.
U	1,739,637	December 17, 1929	Insulator Multipart porcelain pedestal insulator with threaded holes in the metal cap to bolt another insulator on top	HAWLEY, Kent A.	Pedestal	Locke Insulator Corp.
		1930
U	1,744,566	January 21, 1930	Ground Resistance Test Set Portable instrument to measure electrical ground resistance	MOTT, Everett V. ROVERE, Lewis H. ROWLAND, Davidge H.	Testing	Western Union Telegraph Co.
U	1,776,557	September 23, 1930	Pedestal Insulator Pedestal insulator similar to suspension disk with metal cap and pin to bolt other units to	HAWLEY, Kent A.	Pedestal	Locke Insulator Corp.
U	1,776,573	September 23, 1930	Insulator Cementing treatment for a suspension insulator such that the cement will withstand temperature changes	VAN ATTA, Cloyd A.	Suspension	Locke Insulator Corp.
U	1,778,153	October 14, 1930	Insulator Pin Centering Means Suspension disk with large opening for additional cement around the pin and a means to keep the pin centered	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
U	1,778,154	October 14, 1930	Cushion for Insulator Pins and Method of Applying Suspension disk or pin-type pin with asphalt disk at top of pin to cushion strain of pin	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
U	1,778,176	October 14, 1930	Insulator Suspension design using soft metal liner to prevent strain between cap and insulator	VAN ATTA, Cloyd A.	Suspension	Locke Insulator Corp.
U	1,780,246	November 4, 1930	Glass Insulator and Method of Making Same Suspension glass Hewlett design with embedded/loose fitting metal brackets	ROWLAND, Davidge H.	Suspension	Locke Insulator Corp.
U	1,784,392	December 9, 1930	Manufacture of Insulators Suspension insulator with glazed sanded surfaces to improve strength of cap	ROWLAND, Davidge H.	Suspension	Locke Insulator Corp.
U	1,784,792	December 9, 1930	Apparatus for Making Insulators Manufacturing method that replace casting large unipart insulators with a means to press out the entire form of the insulator	HAWLEY, Kent A.	Manufacturing	Locke Insulator Corp.
		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	1,794,111	February 24, 1931	Multiple Skirt Insulator Suspension insulator with multiple skirts and pins or hooks embedded in the ends	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
U	1,808,105	June 2, 1931	Insulator Cutter and Method of Treating Insulators Manufacturing method to cut out the top and bottom recess of a Hewlett suspension disk and ready for cutting the holes for link passages	GOUVERNEUR, Minor F. H.	Manufacturing	Locke Insulator Corp.
U	1,810,424	June 16, 1931	Means for Sealing Insulators Suspension insulator with metal connectors cemented in the insulator with molten metal under a vacuum to remove entrapped air in the joint	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
U	1,822,458	September 8, 1931	Measuring Apparatus Device to measure the density of clay slip	ROWLAND, Davidge H. ROBERTSON, John C.	Manufacturing	Locke Insulator Corp.
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	1,831,765	November 10, 1931	Insulator Link Connector Link for Hewlett suspension disk	GOUVERNEUR, Minor F. H.	Link	Locke Insulator Corp.
U	1,832,157	November 17, 1931	Insulator Suspension insulator pin that is coated and designed to prevent stress from temperature changes	VAN ATTA, Cloyd B.	Suspension	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	1,841,949	January 19, 1932	Insulator With Caps Steel cap cemented to top of insulator with bolts for stacking insulators	HAWLEY, Kent A.	Miscellaneous	Locke Insulator Corp.
U	1,848,622	March 8, 1932	Insulator Suspension rod with metallic shields to keep upper and lower parts dry to prevent electrical leakage	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
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	1,865,134	June 28, 1932	Pole Top Bracket Pole top bracket that uses the same length steel insulator pin as that used on the wooden crossarm	PLIMPTON, Bentley A.	Bracket	Locke Insulator Corp.
U	1,866,804	July 12, 1932	Means for Utilizing Wood Poles to Aid Insulators On wood poles, connect the steel pins with a conductor and fuse to aid grounding an insulator struck by lightning and reduce the chance of burning the crossarm or pole	HAWLEY, Kent A.	Transmission	Locke Insulator Corp.
U	1,889,244	November 29, 1932	Noninterferring Insulator RFI treatment for new or existing insulators by attaching a metal crown	HAWLEY, Kent A.	RFI	Locke Insulator Corp.
U	1,891,708	December 20, 1932	Insulator Cotter and Mode of Use Suspension insulator cap and cotter pin permanent assembled that cannot be removed except with a special device	GALLOWAY, Howard L.	Suspension	Locke Insulator Corp.
		1933
U	1,892,888	January 3, 1933	Strain Insulator Elaborate strain insulator with metal rings and rods attached around the insulator	HAWLEY, Kent A.	Strain	Locke Insulator Corp.
U	1,902,310	March 21, 1933	Method of Making Insulator Caps Method of pressing out a malleable metal cap	PLIMPTON, Bentley A.	Manufacturing	Locke Insulator Corp.
U	1,904,608	April 18, 1933	Insulator Finishing Brushing Machine Machine to grind down interlinking passages in a semi-dry insulator body for metal fittings	BETTINI, David	Manufacturing	Locke Insulator Corp.
U	1,910,333	May 23, 1933	Insulator Connection Suspension with special cotter pin to prevent cap and pin from coming disconnected	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
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.
U	1,913,305	June 6, 1933	Suspension Means for Guy Strain Insulators Guy strain insulators connected by means of special metal hardware	GOUVERNEUR, Minor F. H.	Strain	Locke Insulator Corp.
U	1,925,058	August 29, 1933	Process for Forming Plastic Clay Masses Wet process clay reflocculation method to eliminate pugging process	ROWLAND, Davidge H. WETZEL, Kurt	Wet Process	Locke Insulator Corp.
U	1,940,591	December 19, 1933	Protecting Apparatus for Insulators Arcing ring for string of suspension insulators	HAWLEY, Kent A.	Arcing Ring	Locke Insulator Corp.
		1934
U	1,944,134	January 16, 1934	Insulator Assembling Machine Machine to press on and turn cap to secure the cement and cement in the metal pin	ROBERTSON, John Cullen	Manufacturing	Locke Insulator Corp.
U	1,953,025	March 27, 1934	Corona Shield Corona shield in the form of a metal band that fits around the tie-wire groove	ROWLAND, Davidge H.	Corona	Locke Insulator Corp.
U	1,955,609	April 17, 1934	Insulator U-856A fogbowl	ROWLAND, Davidge H.	Insulator	Locke Insulator Corp.
U	1,958,435	May 15, 1934	High Tension Insulator Post or pedestal insulator with hollow interior filled with dry sand	HAWLEY, Kent Allen	Post Type	Locke Insulator Corp.
U	1,975,576	October 2, 1934	Method of Applying a Conducting Coating on Insulators RFI coating of carbon fused to the surface	HAWLEY, Kent A.	RFI	Locke Insulator Corp.
U	1,977,129	October 16, 1934	Hardware for Guy Strain Insulators Metal hardware for guy strain insulators	HILL, Gregory C.	Strain	Locke Insulator Corp.
U	1,977,957	October 23, 1934	Bus Bar and Bushing Connection Connector to hold bus bar inside a bushing	STEVENS, Leland S.	Bushing	Locke Insulator Corp.
U	1,978,627	October 30, 1934	Vibrating Plunging Machine Manufacturing method using a vibrating plunger tool to form the underside shape of the insulator without causing stresses in the finished porcelain	GOUVERNEUR, Minor F. H.	Manufacturing	Locke Insulator Corp.
U	1,983,569	December 11, 1934	Pedestal Switch Insulator Pedestal insulator to support switch gear or bus bar	ROWLAND, Davidge H.	Pedestal	Locke Insulator Corp.
U	1,983,903	December 11, 1934	Protective Apparatus for Double String Installations Arcing rings for a double string of suspension insulators	HAWLEY, Kent A.	Arcing Ring	Locke Insulator Corp.
		1935
U	1,998,406	April 16, 1935	Insulator Suspension Hardware Links for Hewlett type suspension disks	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
U	2,023,808	December 10, 1935	Shielded Cemented Type Insulator Suspension cementing procedure using metal cap (disc, J-D type & bus)	HAWLEY, Kent A.	Suspension	Locke Insulator Corp.
		1936
U	2,026,782	January 7, 1936	Clay Homogenizing Method and Apparatus Manufacturing method using vibration as the clay is extruded from the pug mill to ensure homogeneity.	GOUVERNEUR, Minor F. H.	Manufacturing	Locke Insulator Corp.
U	2,043,523	June 9, 1936	Insulator Suspension disk using metal malleable liner to aid cement expansion under the metal cap	VAN ATTA, Cloyd B.	Suspension	Locke Insulator Corp.
U	2,044,332	June 16, 1936	Apparatus for Forming Ceramic Products Manufacturing method to produce well mixed clay slip for casting insulators	ROWLAND, Davidge H.	Manufacturing	Locke Insulator Corp.
U	2,048,504	July 21, 1936	Tower Supporting Insulator Insulator to support radio antenna tower	HAWLEY, Kent A.	Radio	Locke Insulator Corp.
U	2,048,558	July 21, 1936	Insulator Plunging Machine Plunging machine to form the shape of bushings and other insulators without the need for turning	MOORE, Stewart L.	Manufacturing	Locke Insulator Corp.
U	2,059,036	October 27, 1936	Clay Testing Apparatus Machine to measure the hardness or plasticity of clay	ROWLAND, Davidge H.	Manufacturing	Locke Insulator Corp.
		1937
U	2,088,433	July 27, 1937	Fog and Dust Insulator U-816 series	PLIMPTON, Bentley A.	Insulator	Locke Insulator Corp.
U	2,093,872	September 21, 1937	Radio Antenna Insulator for Airplanes Antenna insulator for airplanes	MCCOY, Robert L.	Antenna	Locke Insulator Corp.
U	2,093,875	September 21, 1937	Strain Insulator Strain insulator for radio antennas	STEVENS, Leland James	Strain	Locke Insulator Corp.
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.
		1939
U	2,157,100	May 9, 1939	Glazed Ceramic Insulator and the Like Glaze - compression glaze	ROWLAND, Davidge H.	Glaze	Locke Insulator Corp.
		1940
U	2,198,450	April 23, 1940	Light Transmitting Structure Skylight construction using glass blocks	CHERTKOF, Jack O.	OU
		1941
U	2,230,205	January 28, 1941	Process of Connecting a Metal Body to a Vitreous Ceramic Body Metallic coating to facilitate soldering metal parts onto the insulator	ROWLAND, Davidge H. CROSKEY, Carl D.	Miscellaneous	Locke Insulator Corp.
U	2,250,044	July 22, 1941	Insulator Multipart insulator with glazed sanded surfaces to improve strength of cap	CROSKEY, Carl D. ROWLAND, Davidge H.	Multipart	Locke Insulator Corp.
U	2,264,152	November 25, 1941	Method of Forming a Metallic Surface on Ceramic Bodies RFI metallic coating that strongly adheres to the insulator	ROWLAND, Davidge H.	RFI	Locke Insulator Corp.
		1942
U	2,287,976	June 30, 1942	Insulator Glaze - compression glaze & sand joint	CROSKEY, Carl D. ROWLAND, Davidge H.	Glaze	Locke Insulator Corp.
U	2,292,248	August 4, 1942	Bushing Bushing composed of several parts with open chambers	STEVENS, Leland J.	Bushing	Locke Insulator Corp.
U	2,297,646	September 29, 1942	Pug Mill Pug mill design to prevent stresses and strains in the clay as it is extruded	BELLEZZA, Russell G. SKIPPER, Edward M.	Pug Mill	Locke Insulator Corp.
		1944
U	2,341,309	February 8, 1944	Cutting Tool Cutting tool to remove clay from inside a bushing	BETTINI, David Joseph	Cutting Tool	Locke Insulator Corp.
U	2,346,620	April 11, 1944	Method of Forming Insulator Bodies Method to mix water with dry ingredients to form clay of the proper water content	SKIPPER, Edward M.	Clay	Locke Insulator Corp.
U	2,355,684	August 15, 1944	Insulator Cutting Machine Machine to automatically trim the profile in insulators in an assembly line process	SKIPPER, Edward M.	Machine	Locke Insulator Corp.
U	2,357,550	September 5, 1944	Insulator RFI coating applied before firing the insulator	ROWLAND, Davidge H.	RFI	Locke Insulator Corp.
		1947
U	2,425,270	August 5, 1947	Method and Apparatus for Forming Blanks for Post and Pedestal Insulators Manufacturing method to produce blanks for post and pedestal insulators	SKIPPER, Edward M.	Manufacturing	Locke Insulator Corp.
		1949
U	2,475,230	July 5, 1949	Conductor Support Clamp-top design to secure conductor on top of the insulator	FREY, Howard Albert MCCOY, Robert Leslie	Clamp-top	Locke, Inc.
		1955
U	2,709,058	May 24, 1955	Insulator Support Rack Secondary rack bracket with side tabs to receive screws or bolts.	VOSE, Fred C. BURNIE, Glen RUTH, Bernard W.	Bracket/secondary Rack	General Electric Co.
		1958
U	2,821,158	January 28, 1958	Machine for Coating Bell-Shaped Electrical Suspension Insulators Machine for automatically glazing suspension insulators and applying a sanded band for cementing the metal cap.	BROWN, Leonard MIGLIORINI, Vincent T. LENZ, Carl SMITLEY, Wayne C.	Manufacturing	General Electric Co.
		1963
U	3,097,101	July 9, 1963	Ceramic Product and Method of Making the Same Increases the mechanical and electrical strength of porcelain insulators by controlling the grain size of the flint used in the porcelain body and the glaze.	LESTER, Ronald H.	Porcelain	General Electric Co.

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