Search the Insulator Patent Reference Library:

Total of 87 patents found where: Class is '425';

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
		1877
U	187,725	February 27, 1877	Improvement in Molding Glass Improved method to mold necks on bottles (patent date reported on glass chard)	OAKMAN, Samuel	Mold
		1891
U	455,400	July 7, 1891	Manufacture of Knob Molds Method of forming mold boxes for the manufacture of knobs.	HEADLEY, Harry	Knob	H. Brunt & Son
		1892
U	473,497	April 26, 1892	Pug Mill Pug mill for extruding clay	CROSSLEY, Joseph	Pug Mill
U	474,496	May 10, 1892	Apparatus for Molding Earthenware, &c. Press to form lateral indentions or wire grooves around the side of the insulator to such as for standard porcelain knobs	CROSSLEY, Joseph	Press
U	485,282	November 1, 1892	Machine for Molding Marbles or Other Articles from Clay &c. Machine for molding marbles from clay or plastic material	LANG, Matthew	Machine
U	486,182	November 15, 1892	Glass Mold Glass mold to form threads on the bottle.	OAKMAN, Samuel	Bottle
		1895
U	533,212	January 29, 1895	Combined Jigger and Pulldown Press or jigger gearing and mechanism for forming earthen ware articles such as dishes and pottery	CROSSLEY, Joseph	Press
		1900
U	648,341	April 24, 1900	Die for Pottery Ware Die for pressing out door knobs	BOCH, John W.	Die
		1901
U	686,755	November 19, 1901	Machine for Making Insulating Tubes Automatic wall tube making machine. Likely assigned to the Akron Smoking Pipe Co.	PALMER, Charles H. FENTON, Curtis	Tube
		1902
U	716,343	December 16, 1902	Machine for Forming the Interiors of Plastic Materials Press for making porcelain insulators	LOCKE, Fred M.	Press
		1904
U	759,429	May 10, 1904	Machine for Heading Insulators Machine for forming the heads on pottery or porcelain wall tubes	FIRESTONE, Truman L.	Wall Tube
U	774,765	November 15, 1904	Art and Method of Manufacturing Earthenware Insulators Earthenware, manufacture of	LOCKE, Fred M.	Earthenware
		1905
U	788,120	April 25, 1905	Press for Plastic Material Insulator press for forming the bottom shell and threaded pinhole of multipart porcelain insulators (Thomas blue jean seam impression in bottom skirt)	THOMAS, George W.	Press	The R. Thomas & Sons Co.
U	790,214	May 16, 1905	Method of Manufacturing High Potential Earthenware Insulators Earthenware, manufacture of hi-potential insulators	LOCKE, Fred M.	Earthenware
		1906
U	811,602	February 6, 1906	Mold for Plastic Materials Press mold for forming insulators	WATTS, Arthur S.	Press	The Locke Insulator Mfg. Co.
U	838,727	December 18, 1906	Die for Forming Insulators Press to form petticoats - improvement on 716,343 (see reissue 12,934 on 6-4-1909)	LOCKE, Fred M.	Press
		1908
U	878,910	February 11, 1908	Die for Saggers and the Like Metal dies for making saggers.	THOMAS, George W.	Sagger	The R. Thomas & Sons Co.
U	894,623	July 28, 1908	Apparatus for Molding Porcelain Ware Press for molding small dry process insulators such as nail-knobs, etc.	GEISENHONER, Henry	Press	General Electric Co.
U	899,871	September 29, 1908	Mantle Ring Mold A mold for making mantle rings.	KENNEY, Benjamin D.	Mold	The R. Thomas & Sons Co.
		1909
R	12,934	April 6, 1909	Die for Forming Insulators Press die for forming insulators (reissue of patent 838,727)	LOCKE, Fred M.	Press
U	934,930	September 21, 1909	Insulator Pressing Machine Press for making porcelain insulators	MCCANN, Thomas T.	Press
		1915
U	1,157,612	October 19, 1915	Die for Insulators Plunger to form suspension petticoats and threaded pinhole	BENNETT, Cornelius Van Dyke	Plunger	Locke Insulator Mfg. Co.
		1916
U	1,193,185	August 1, 1916	Machine for Internally Shaping Telegraph Insulators and the Like Machine to cut out and shape the internals of an insulator	PODMORE, William	Press	1/2 to Henry Lewis Doulton
U	1,198,732	September 19, 1916	Plunger for Forming Insulators Plunger with holes to release pressure (see 838,727 and reissue 12,934)	LOCKE, Louis Peer	Plunger	Locke Insulator Mfg. Co.
U	1,204,745	November 14, 1916	Pressure Die for Insulator Pressing Molds Insulator threading press	DAHL-JENSEN, Jens Peter	Press
		1917
U	1,226,795	May 22, 1917	Insulator Press Insulator press	NEWBY, William	Press	William I. Lourie
		1920
U	1,342,053	June 1, 1920	Bushing Forming Machine Machine to manufacture wall tubes and bushings	MCKNIGHT, Oscar W.	Wall Tube	Brunt Tile & Porcelain Co.
		1921
U	1,381,695	June 14, 1921	Porcelain Tube Heading Machine Machine for making wall tubes	BEATTY, Thomas W.	Wall Tube
		1922
U	1,407,550	February 21, 1922	Method and Machine for Forming Impressions in Plastic Articles Threading porcelain by gyrating the thread mandrel (""wobbler"" method)	LAPP, John	Thread
U	1,413,023	April 18, 1922	Method and Means for Forming Passages in Plastic Material Suspension Hewlett design, method of cutting ring hole	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
U	1,427,213	August 29, 1922	Lathe Lathe to cut insulator profile using a profile template	LAPP, John S.	Lathe	Lapp Insulator Co.
		1923
U	1,465,157	August 14, 1923	Apparatus for Shaping Insulators Machine to shape to crown of a small pin-type insulator	BUCKLEY, Lorenzo C.	Machine	The R. Thomas & Sons Co.
U	1,469,584	October 2, 1923	Tube Forming Machine Machine for making porcelain wall tubes	CASE, Francis M.	Wall Tube	Federal Porcelain Co.
U	1,471,907	October 23, 1923	Machine for Heading Porcelain Tubes and the Like Machine to make porcelain wall tubes	MASON, Albert G. BUCKLEY, Lorenzo C.	Wall Tube	The R. Thomas & Sons Co.
		1924
U	1,488,474	April 1, 1924	Machine for Molding Insulators Press and molding machine for porcelain insulators	BURNS, James A.	Press	Westinghouse Electric & Mfg. Co.
		1925
U	1,553,356	September 15, 1925	Machine for Producing Threads or Grooves in Plastic Articles Threading method whereby mandrel rotates (similar to Lapp wobbler method)	BENNETT, Cornelius Van Dyke	Thread	The Porcelain Insulator Corp.
U	1,556,440	October 6, 1925	Press for Making Insulators and the Like Press for forming threads in porcelain insulators and to prevent damaging the threaded pinhole once formed	HIBBARD, Robert L.	Press
U	1,567,027	December 29, 1925	Insulator Threading Machine Machine to form threads in plastic clay	BENNETT, Cornelius Van Dyke	Press	The Porcelain Insulator Corp.
		1927
U	1,625,514	April 19, 1927	Apparatus for Forming Plastic Materials Improved press to form insulator shape from wet process clay and cut in threaded pinhole	AUSTIN, Arthur O. MACLEOD, Donald Keith	Press	The Ohio Brass co.
U	1,640,514	August 30, 1927	Press for Forming Plastic Materials Press for forming threads in wet process porcelain	MUELLER, Ferdinand C. H.	Press	Findlay Electric Porcelain Co.
		1928
U	1,663,329	March 20, 1928	Forming and Tapping Machine Machine to form threads in plastic clay bodies	AUSTIN, Arthur O.	Manufacturing	The Ohio Brass Co.
U	1,677,498	July 17, 1928	Apparatus for Undercutting Pinholes in the Center Shells of Insulators Machine to undercut the pinhole for the suspension pin to prevent the pin from pulling out of the insulator.	SMITH, William Henry	Suspension	Electric Service Supplies Co.
U	1,679,345	August 7, 1928	Method and Apparatus for Casting Ceramic Pieces Manufacturing method of casting bushings with a hollow core	AUSTIN, Arthur O.	Manufacturing	The Ohio Brass Co.
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	1,689,073	October 23, 1928	Indenting Tool Tool used to roll across the surface of a clay insulatot to form indentions or a rough surface to produce a better griping surface for cement.	HARVEY, William F.	Tool
U	1,693,429	November 27, 1928	Method of Casting Manufacturing method to cast bushings with a hollow core	AUSTIN, Arthur O.	Manufacturing	The Ohio Brass Co.
		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	1,717,996	June 18, 1929	Means for and Method of Making Insulators Press method of molding porcelain insulator with vibration improves quality (Hewlett)	MOORE, JR., Stewart L.	Press	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	1,731,099	October 8, 1929	Method of Forming a Cement-Receiving Surface on an Insulator Section Improve cement adhesion by using a special roller tool to form a rough surface similar to that obtained by sanding.	HARVEY, William F.	Cement
U	1,732,339	October 22, 1929	Apparatus for Finishing Insulator Shells Machine to form the opening in the bottom of a top shell and form grooves in the sides of the opening to aid in cement adhesion between the top shell and the second shell.	OSBORNE, David H.	Manufacturing	Electric Service Supplies Co.
		1930
U	1,755,308	April 22, 1930	Apparatus for Finishing Insulator Shells Machine to form grooves inside the suspension disk to aid cement adhesion.	SMITH, William Henry	Suspension	Electric Service Supplies Co.
U	1,779,811	October 28, 1930	Method of Manufacturing Insulators Press for making skirts/petticoats in one-piece porcelain (replaces casting)	HARVEY, William F.	Press
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	1,808,105	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.
		1932
U	1,866,792	July 12, 1932	Multiple Insulator Trimming Machine Machine to trim several insulators at the same time	BENARD, Arthur G.	Manufacturing	Locke Insulator Corp.
		1933
U	1,929,737	October 10, 1933	Apparatus for Molding Insulators Die to hot press to form an insulator for street lights with one part of the mold rotating and a stationary part to form petticoats with integral lugs (see 2,007,567)	FISCHER, Eugene H.	Manufacturing	The Harford Faience Co.
U	1,937,184	November 28, 1933	Jigger Jiggering machine using centrifugal force to cut out the interior of bushings	AUSTIN, Arthur O.	Manufacturing	The Ohio Brass Co.
		1934
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.
		1935
U	2,007,567	July 9, 1935	Apparatus for Molding Insulators Machine for hot pressing porcelain box for street lights in one operation the interior surface with a rotating die and the exterior irregular surface with lugs with a stationary die (see 1,929,737)	FISCHER, Eugene H.	Manufacturing	Westinghouse Electric & Mfg. Co.
		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	2,033,827	March 10, 1936	Insulator Forming Machine Machine to form the underside and recesses between skirts and the petticoats by using a trimming device that can be adjusted to any angle and extend inward as needed	HARVEY, Leo B. FRENCH, Lucius L.	Manufacturing	Porcelain Insulator Corp.
U	2,034,707	March 24, 1936	Apparatus for Making One-Piece Insulators Machine to press out the form and trim the profile in large unipart insulators	BENARD, Arthur G.	Manufacturing	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.
		1937
U	2,068,941	January 26, 1937	Process and Apparatus for Manufacturing Insulators Plunger to first form the pinhole in a porcelain insulator by first plunging a pinhole without threads then form the threads	BOVARD, Floyd G.	Press	The Ohio Brass Co.
		1940
U	2,215,984	September 24, 1940	Apparatus for Producing Hollow Glass Articles Glass suction press for CD 128	SOUBIER, Leonard D.	Press	Owens-Illinois Glass Co.
		1941
U	2,234,604	March 11, 1941	Molding Apparatuse Automatic press for molding nail knobs	PECK, Lee H.	Press	Porcelain Products, Inc.
U	2,261,583	November 4, 1941	Method of Making Hollow Forms Method of casting hollow forms	HEMPHILL, James R.	Manufacturing	The Colonial Insulator Co.
		1942
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.
U	2,301,939	November 17, 1942	Production of Ceramic Bodies Press to make a very dense porcelain body. It is neither wet process nor dry process porcelain. The product was called ""Prestite"" porcelain.	FISCHER, Eugene H.	Press	Westinghouse Electric & Mfg. Co.
		1943
U	2,336,864	December 14, 1943	Apparatus For Forming Insulators CD 1030: Wireholder made of glass, press for making the design	HOLMES, Minot K.	Insulator	Owens-Illinois Glass Co.
		1945
U	2,383,556	August 28, 1945	Mold Lock Mold lock for glass block molds	LOUDEN, Harry M. MCCREERY, Cecil W.	OI	Owens-Illinois Glass Co.
		1946
U	2,393,549	January 22, 1946	Press Molding Machine Press for glass land mine production	MCCREERY, Cecil Wayne	OI	Owens-Illinois Glass Co.
U	2,395,295	February 19, 1946	Method of Producing Insulators Improved method of jiggering and plunging	ROWLAND, Davidge H.	Manufacturing
		1947
U	2,415,462	February 11, 1947	Ceramic Molding Press Vacuum molding of clay articles such as insulators. This may be the patent used by Locke to make their ""vacuum dry pressing"" porcelain insulators.	CHERRY, George L. VEALE, Charles C.	Press	Western Electric Co.
		1952
U	2,582,922	January 15, 1952	Apparatus for Molding Articles Press that can be adapted for insulator manufacture	CROWLEY, Henry L. HOSSENLOPP, Arthur M.	Press	Henry L. Crowley & Co., Inc.
		1955
U	2,710,492	June 14, 1955	Apparatus for Forming Cavities in the Wall of a Socket of a Pin-Type Glass Insulator Insulator press	WILCOCK, John Edward	Press	Pilkington Brothers Ltd.
		1958
U	2,830,648	April 15, 1958	Process and Apparatus for Producing a Glass Fiber Mat Glass marbles are used to feed the machine to produce a glass fiber mat.	HADDOCX, Edward J.	Glass Marble	L. O. F. Glass Fibers Co.
		1959
U	2,898,658	August 11, 1959	Manufacture and Apparatus for the Manufacture of Ceramic Ware Method of removing water through conduits in the mold when plastic clay is pressed in a mold.	HARRY, William R.	Mold	McGraw-Edison Co.
U	2,915,801	December 8, 1959	Apparatus for Forming Plastic Clay Bodies Mold and pressing operation to eliminate the need to plunge and trim a suspension disk	HARRY, William R.	Mold	McGraw-Edison Co.
		1961
U	2,972,783	February 28, 1961	Method for Fabricating Glass Block Panels Toplite skylight glass block panels	RUSSELL, Richard G. THEISEN, Jean P. STARK, Charles H.	KI	Kimble Glass Co.
		1962
U	3,026,575	March 27, 1962	Skylight Structure and Method of Fabrication Sklight made of glass blocks	LUSHER, Kenneth G. MCDAVITT, Murray VINCENT, Harvard B.	OI	Owens-Illinois Glass Co.
		1964
U	3,155,479	November 3, 1964	Centrifugal Molds and Method of Forming Hollow Articles Glass TV Tube Molds	ZIMMERMAN, George	OI	Owens-Illinois Glass Co.
		1965
U	3,185,560	May 25, 1965	Plural Piston Press Forming Apparatus Press for forming the inner shape of glass articles such as a suspension insulator	WILCOCK, John Edward	Press	Pilkington Brothers Ltd.

Total of 0.05 seconds