Search the Insulator Patent Reference Library

U

917,785

April 13, 1909

Insulating Support for High Tension Conductors
Suspension support system

MERSHON, Ralph D.

BUCK, Harold W.
HEWLETT, Edward M.

U

925,561

June 22, 1909

Suspension of High Tension Lines
Suspension system for high tension transmission

General Electric Co.

U

947,274

January 25, 1910

Suspension Device for Insulators
Suspension with ball and socket coupling

AUSTIN, Arthur O.

The Akron Hi-Potential Porcelain Co.

U

947,885

February 1, 1910

Insulator
Suspension insulator and clamp support system

CONE, William S.

U

951,298

March 8, 1910

Suspension Clamp
Clamp to secure cable to suspenion insulators

AUSTIN, Arthur O.

Akron Hi-Potential Porcelain Co.

U

966,584

August 9, 1910

Protecting Apparatus for Insulators
Suspension protected by arcing ring

NICHOLSON, Lloyd C.

U

973,204

October 18, 1910

Insulating System for High Potential Electric Conductors
Suspension insulator multiples

LOCKE, Fred M.

U

974,177

November 1, 1910

Insulator for High Tension transmission systems
Suspension insulator with yieldable slugs to distribute strain pressure

U

November 1, 1910

Strain Insulator
Suspension made from Electrose

U

974,672

November 1, 1910

Insulator
Suspension insulator

U

July 18, 1911

High Voltage Insulator
Suspension type

LOCKE, Fred M.

U

1,006,040

October 17, 1911

Insulator
Suspension using multiple parts connected with a cable

U

1,006,041

October 17, 1911

Insulator
Suspension using multiple parts connected with a cable

U

1,006,042

October 17, 1911

Insulator
Suspension using multiple parts connected with a cable

U

1,010,920

December 5, 1911

High Tension Insulator
Suspension cap and pin design using simple locking pin

KENNEY, Benjamin D.

U

1,015,224

January 16, 1912

Insulator
Suspension insulator of insulating rope, hoods, and arcing rods. [This looks very close to the handful of glass suspension insulators found in 2002 in northern CA by Paul Greaves and Mike Spadafora. The glass was most probably made by Hemingray. No markings were found.]

HILLIARD, John D.
PARSONS, Charles E.

U

1,015,229

January 16, 1912

Insulator
Suspension using multiple parts cemented together on tubular core. The patent is similar to the commonly referred ""Micarta Core"" insulators, but experts believe the patent was not used for those insulators. The glass insulators may have been made by Hemingray.

J. E. Way

U

1,022,874

April 9, 1912

Machine for Drilling Porcelain
Machine for drilling U-shaped holes in Hewlett suspension disk

U

September 10, 1912

Insulator
Suspension insulator of insulating rope and hoods

U

1,039,799

October 1, 1912

Insulator Chain for High Pressure Electric Transmission Lines
Suspension chain (pork liver)

PRIESTLEY, Charles M. E.

Societe Vedovelli Priestley

U

1,075,217

October 7, 1913

High Voltage Insulator
Suspension, cap design to allow easy connection using a spring-loaded clip

MAXWELL, Marshall P.

FAY, John L.
WAY, Sylvester B.

U

1,106,797

August 11, 1914

Electric Insulator
Suspension insulators

U

1,110,934

September 15, 1914

Insulator
Suspension disk

U

November 24, 1914

Disk Strain Insulator
Suspension made of Electrose like fishtail Hewlett

STANFORD, JR., Joseph Addison

U

1,122,030

December 22, 1914

Suspension Insulator Eyebolt
Steel eyebolt pin for suspension insulators

U

1,128,424

February 16, 1915

Insulator
Suspension multipart insulator fitted with arcing horns

DUNCAN, John D. E.

U

1,168,031

January 11, 1916

Suspension Type Insulator
Suspension bell-shaped insulators

RANDALL, Karl C.

U

1,170,287

February 1, 1916

Method of Making Insulators
Suspension cementing method (high temp and humidity)

LAPP, John S.

U

1,173,994

February 29, 1916

High Tension Insulator
Suspension with ribbed tubes and interlocking links

BARFOED, Svend

2/5 to Otis Gibson

U

1,177,354

March 28, 1916

Line Insulator
Suspension interconnecting linking device

RANSOM, Daniel Parke

U

1,182,940

May 16, 1916

High Voltage Insulator
Suspension, two part made of Electrose

U

1,191,595

July 18, 1916

Machine for Forming Porcelain Ware
Machine to cut out and shape the Hewlett suspension disk

U

August 15, 1916

Insulator
Cochrane Bell suspension.

COCHRANE, Harry H.

U

1,198,137

September 12, 1916

Insulator
Suspension insulator with an outer covering of spun steel or iron.

LINCOLN, Paul M.

U

1,205,812

November 21, 1916

Strain Insulator
Suspension made of Electrose similar to Hewlett with interlocking links

U

1,206,158

November 28, 1916

Safety Strain Insulator
Suspension made of Electrose with special interlocking links

U

1,212,703

January 16, 1917

Disk Type Chain Insulator
Suspension made of Electrose with special interlocking links

U

1,212,704

January 16, 1917

Disk Strain Insulator
Suspension or disk strain made of Electrose with corrugations top and bottom

U

1,212,706

January 16, 1917

Disk Strain Insulator
Suspension or disk strain made of Electrose with spring bar to allow slight vertical movement

U

1,212,707

January 16, 1917

Detachable Connection for Chain Links
Link connectors for Electrose suspension disks

U

1,212,708

January 16, 1917

Wire Clamp
Cable clamp for Electrose suspension disks

U

1,215,549

February 13, 1917

Electric Conductor Insulating Support
Suspension with method of balancing the electrical load across the string

KOONTZ, JR., John A.

1/2 to Beardsley/1/4 to Shoemaker

U

1,219,450

March 20, 1917

Insulator
Suspension with interlocking linkage similar to Hewlett and hog liver

FOWLE, Frank F.

U

1,223,909

April 24, 1917

Disk Strain Insulator
Suspension or disk strain made of Electrose with spiraling ridges on each side

U

1,228,711

June 5, 1917

Connecting Device for Chain-Type Insulators
Suspension link coupling

U

1,231,090

June 26, 1917

Suspension Means for Strain Insulators
Link connectors for suspension disks

U

1,232,278

July 3, 1917

Insulator
Suspension disk cementing method & split, eye-ring pin design

U

1,233,296

July 17, 1917

High Tension Insulator
Suspension disk with petticoats and metal cap with projecting flange

U

July 24, 1917

Strain Insulator
Suspension using metal jaws inside to secure pin instead of using cement

U

1,238,768

September 4, 1917

Insulator
Suspension cap and pin to improve strength of connection

HILL, Gregory C.

U

1,241,528

October 2, 1917

Insulator
Suspension with shells nested together by means of external threads

LINCOLN, Paul M.

U

1,242,907

October 16, 1917

Insulator
Suspension cap and pin to improve strength of connection

U

November 6, 1917

Insulator
Suspension string of various size disks to balance electrical capacitance

U

1,246,461

November 13, 1917

Strain Insulator
Suspension metal cap design

PLIMPTON, Bentley A.

JACKSON, Ray P.
SCHAAKE, William

U

1,248,498

December 4, 1917

Suspension Device for Insulators
Suspension pin to link disks

U

1,250,387

December 18, 1917

Electric Insulator
Suspension made of several parts bolted together

U

1,251,097

December 25, 1917

Strain Insulator
Suspension using metal rings to secure pin and cap

PECK, John M.

U

1,259,385

March 12, 1918

Suspension Insulator
Suspension insulator (see 1,129,520)

FORTESCUE, Charles Le G.

U

1,266,711

May 21, 1918

Strain Insulator
Suspension metal cap design

PLIMPTON, Bentley A.

U

1,273,015

July 16, 1918

Electric Insulator
Suspension made of several parts bolted together

U

1,281,268

October 15, 1918

Insulator
Suspension cap and pin to improve strength of connection

U

October 22, 1918

Multiple Section Suspension Insulator
Suspension insulator with symmetrical metal parts to reduce electrical strain

SONNEBORN, Sol S.

U

1,286,010

November 26, 1918

Suspension Device
Suspension pin to link disks

U

1,291,217

January 14, 1919

Adjustable Suspension Insulator
Suspension disk with adjustable length pin to equalize the potential across each disk to reduce arc-over

SONNEBORN, Sol S.

U

1,303,324

May 13, 1919

Electric Insulator
Suspension tubular insulator with flanged top metal cap and bottom metal cap

U

1,305,712

June 3, 1919

Insulator Cap
Suspension cap to receive hook with pin to fin in cap

U

1,306,670

June 10, 1919

Insulating Support
Suspension cap and pin to improve strength of connection

LANYON, Samuel H.

U

1,324,559

December 9, 1919

Insulating Support
Suspension cap and pin to improve strength of connection

LANYON, Samuel H.

U

1,326,307

December 30, 1919

Method of and Means for Supporting Electric Conductors
Rod type insulators used as suspension insulators for high voltage conductors.

U

1,329,770

February 3, 1920

Insulator
Suspension type for J-D

U

March 16, 1920

Electric Insulator
Suspension with bolted on metal cap (Italy)

SEMENZA, Guido

U

1,348,248

August 3, 1920

Disk Suspension Insulator
Suspension, Electrose similar to Hewlett

BLACKWELL, Francis O.
BUCK, Harold W.

U

1,360,352

November 30, 1920

Insulator
Suspension sanded under cap and pin to improve cement adhesion

U

December 14, 1920

High Tension Insulator
Suspension or strain of resin rod covered with ceramic to keep rod dry

General Electric Co.

U

1,363,673

December 28, 1920

Insulator
Suspension with internal ribbed cap and ribbed pin to improve cement joint

SCHAAKE, William

U

1,373,576

April 5, 1921

Electric Insulator
Suspension insulator composed of several parts to withstand tension

PIERCE, Henry T.
MCPHEE, Angus D.

U

1,375,974

April 26, 1921

Insulator Connector
Links for Hewlett suspension disks

WELCH, Walter J.
TRACY, Atlee H.

General Electric Co.

U

1,393,330

October 11, 1921

Electrical Insulator
Links for Hewlett suspension disks (see 1,110,934)

H. M. Byllesby & Co.

U

1,398,937

November 29, 1921

Suspension Insulator
A suspension insulator with pressed on metal cap and special pin that does not require cement.

CAROLUS, Max

U

1,406,953

February 14, 1922

Strain Insulator
Suspension with special slotted cap and pin to improve cement joint

U

1,412,759

April 11, 1922

Cementless Strain Insulator
Suspension disks connected by circular clamps

STEVENS, Frank J.

U

1,413,023

April 18, 1922

Method and Means for Forming Passages in Plastic Material
Suspension Hewlett design, method of cutting ring hole

U

1,429,110

September 12, 1922

Insulator
Suspension, special U-bolt links and hook for Hewlett disks

SEAVEY, Haller D.

Maxwell Engr & Mfg. Co.

U

1,441,990

January 9, 1923

Insulator Connector
Connector for the U-bolt links for Hewlett suspension disk

U

1,443,657

January 30, 1923

Insulator
Electrose suspension insulator

U

1,446,067

February 20, 1923

Method of Connecting Insulator Units
Suspension, method of cementing pin

REAGAN, Frank H.

U

1,446,523

February 27, 1923

Insulator
Suspension, disk made of Electrose with metal cap

U

1,454,634

May 8, 1923

Insulator
Suspension or multipart attachment using wire lacing

U

1,458,811

June 12, 1923

Insulator Connector
Link for Hewlett suspension disk (see 1,633,399)

ECKERT, Grandon E.

SCHEID, Johannes Friedrich

U

1,484,569

February 19, 1924

Ceramic Body
Method of making a suspension disk by inserting a fired porcelain part inside the bottom of an unfired disk, then firing the disk, which shrinks around the insert securing a cemented pin inside

H. Schomburg & Shone

U

1,489,689

April 8, 1924

Insulator
Suspension with ribbed pin and cap for better adhesion of cement

U

April 8, 1924

Insulator and Method of Assembling the Same
Suspension with sanded joints & soft coating for better adhesion of cement

U

April 8, 1924

Insulator
Suspension with ribbed sheet metal in pin and cap for better adhesion of cement

U

April 15, 1924

Insulator
Suspension with ribbed pin and cap & notched cap for better adhesion of cement

U

July 8, 1924

Link Insulator
Suspension link strain

U

September 2, 1924

Suspension Insulator
Suspension with metal cap on top and underneath

PLIMPTON, Bentley A.

ROHDE, Fritz
SCHWINNING, Max

U

1,508,158

September 9, 1924

Coupling for Insulators
Links to connect Hewlett suspension disks

U

November 18, 1924

Suspension Insulator
Suspension, special pin design

Nora Pfannenstiel

U

1,520,984

December 30, 1924

Electric Insulator
Suspension insulator composed of several parts to withstand tension

U

1,521,743

January 6, 1925

Insulator
Suspension arcing horn system and insulator (see 1,552,664 and 1,783,271)

U

February 10, 1925

Insulator Link
Suspension links for Hewlett disks

U

1,542,588

June 16, 1925

Method of Making Suspension Insulators of Glass
Suspension glass insulator with glass pressed around mounting pin

SCHOTT, Erich

Jenaer Glaswerk Schott & Gen.

U

1,543,313

June 23, 1925

Insulator
Suspension metal pin and cementing technique

U

June 30, 1925

Manufacture of Insulators
Suspension glass insulator with pin molded in the glass

LITTLETON, Jesse T.
FULCHER, Gordon S.

Corning Glass Works

U

1,552,663

September 8, 1925

Insulator Cap
Metal cap for suspension insulator disks

U

September 8, 1925

Insulator
Suspension arcing horn insulator (see 1,521,743 and 1,783,271)

U

October 6, 1925

Method of Connecting Insulator Units
Suspension, card used to keep cement off top surface around cap

REAGAN, Frank H.

U

1,578,508

March 30, 1926

Insulator
Suspension, multipart with top/bottom grooves to attach support rings

GARBUTT, Harry L.

U

1,578,526

March 30, 1926

Insulator
Suspension string composed of multiple porcelain disks with a hook-like link on top and bottom to allow them to be quickly strung together

U

1,579,174

March 30, 1926

Insulator
Suspension with metal eye-bolt pin

U

1,608,029

November 23, 1926

Insulator
Suspension insulator

LOCKE, Fred M.

U

1,617,154

February 8, 1927

Insulator
Suspension with metal eye-bolt pin and cap with special securing clips

U

1,622,648

March 29, 1927

Insulator
Suspension similar to Hewlett with uniform thickness of porcelain

U

1,625,601

April 19, 1927

Insulator
Suspension insulator made of multiple sections that are clamped together in the field

U

1,633,399

June 21, 1927

Insulator Fitting
Link for Hewlett suspension disk (see 1,458,811)

ECKERT, Grandon E.

U

1,637,374

August 2, 1927

Insulator
Suspension, tubular with ribs and cap on both ends

FORTESCUE, Charles Le G.

U

1,645,266

October 11, 1927

Insulator Connector
Suspension disk pin connector and shield around it to compensate for electrostatic field

WAHLBERG, Nils A.

U

1,645,447

October 11, 1927

Suspension Insulator
Suspension, method of cementing metal bolt using flexible thimble

PECK, John M.

The Porcelain Insulator Corp.

U

1,650,034

November 22, 1927

Insulator
Suspension with slotted metal cap for pin linkage

U

1,651,201

November 29, 1927

Insulator
Suspension Hewlett type

U

1,652,506

December 13, 1927

Link-Type Insulator
Suspension bell-shaped link type with special U-shaped cable links

WAHLBERG, Nils A.

U

1,653,117

December 20, 1927

Suspension Insulator
Suspension, method of cementing metal bolt using flexible thimble

PECK, John M.

The Porcelain Insulator Corp.

U

1,657,035

January 24, 1928

Suspension Insulator with Hood and Deformable Pivoting System Forming an Articulated Joint
Suspension cemented pin with pivot joint

RICHARD, Augusto

GOUVERNEUR, Minor F. H.
GOUVERNEUR, Fairfax H.

U

1,657,924

January 31, 1928

Chain Link for Insulators
Link for Hewlett suspension insulator

U

1,659,183

February 14, 1928

Insulator
Suspension with metal flanges to balance electrical field

U

March 6, 1928

Insulator
Suspension string with insulators having conducting surface to balance electrical field

U

1,664,208

March 27, 1928

Insulator
Suspension fog-type with ceramic covered wood/fiber connecting tube

GILCHREST, George Irving

U

1,669,529

May 15, 1928

Insulator
Suspension fog-type with wood strain insulator for connecting to another insulator

MILLER, Frederick H.

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

Electric Service Supplies Co.

U

1,684,066

September 11, 1928

Insulator
Suspension with metal and porcelain shaped to conform with electric field

MINOR, Douglas F.

U

1,684,441

September 18, 1928

High Tension Insulator
Suspension with special ribbed cap and pin

U

1,690,291

November 6, 1928

Insulator
Suspension flying saucer type with special link design

U

1,690,989

November 6, 1928

Multiple String Insulator Suspension
Suspensions made up of several strings of disks

U

1,691,330

November 13, 1928

Insulator
Suspension string with flange attachment to balance electric field

U

January 15, 1929

Method of Making Insulators
Suspension insulator, method to attach skirts to a central shank

KATZENBERGER, Bernard
JANSEN, Theodor

U

1,702,236

February 12, 1929

High Tension Insulator Construction
Suspension disk with ""capacity gland"" to prevent electrical streamers and provide a balanced electrical field

U

March 5, 1929

Insulator Mounting
Suspension pin with lugs that fits in slot and turned to lock it inside the insulator

Aktiengesellschaft Brown Boveri & Cie.

U

1,708,876

April 9, 1929

Insulator
Suspension Hewlett links made of formed sheet metal

ECKERT, Grandon E.

U

1,712,432

May 7, 1929

Electrical Insulator Assembly
Suspension using Hewletts for novel electric switch

HAGERMAN, Alva Lloyd

U

1,712,556

May 14, 1929

Insulator Suspension Link
Suspension links for Hewlett disks that are ductile and pliable

U

1,712,557

May 14, 1929

Link Liner
Ductile and pliable liner for the holes in Hewletts to cushion link contact

SCHOENTHALER, George Henry

U

1,716,963

June 11, 1929

Insulator
Suspension coupling device (see 1,329,770)

U

July 9, 1929

Insulator
Suspension with cutout metal cap and split spring metal eye-pin

U

1,725,097

August 20, 1929

Insulator Structure
Metal parts of suspension insulators are coated with rubber or resin to help prevent or reduce flashover

NAYLOR, William K.

U

1,728,522

September 17, 1929

Insulator for High Voltage Systems
Suspension disk with strips of high resistance conductive material embedded in the upper surface to produce a uniform distribution of voltage across each disk in a string

BAUM, Frank G.

U

1,729,532

September 24, 1929

Electrical Insulator
Cap and pin design for suspension insulator

ZIESCHE, Otto Paul

Hermsdorf-Schomburg-Isolatoren G. M. B. H.

U

1,730,170

October 1, 1929

Insulator
Design with metal pin and metal projections to prevent arc-over

SMITH, Harold B.

U

1,730,171

October 1, 1929

Insulator
Design with metal pin and metal projections to prevent arc-over

SMITH, Harold B.

U

1,730,180

October 1, 1929

Insulator
Suspension insulator made of cylindrical insulator and metal hoods on each end

WAHLBERG, Nils A.

U

1,734,167

November 5, 1929

Suspension Insulator Fitting
Link design for Hewlett suspension disks to reduce movement

HOLMES, Henry R.

U

1,737,749

December 3, 1929

Insulator
Suspension with reinforcing band around cap and ribbed pin

U

December 3, 1929

Insulating Support
Suspension cap, pin and connector

LANYON, Samuel Herbert

HAQUIN, Henri Louis Joseph

Lapp Insulator Co.

U

1,754,101

April 8, 1930

Insulator and Mold for Casting the Same
Hewlett style insulator made by casting

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

Electric Service Supplies Co.

U

1,759,253

May 20, 1930

Insulator
Suspension insulator assembly with porcelain insulator in compression without the need for cement.

GERHARDT, Roy C.

U

1,760,786

May 27, 1930

Coupling for Insulators
Two part metal coupling to link Hewlett disks together

SLEEMAN, Harold P.

U

1,768,948

July 1, 1930

High Voltage Insulator
Suspension insulator

BAUM, Frank G.

U

1,772,513

August 12, 1930

Insulator
Design to allow the lowermost Hewlett disk to have its underside wetted with rain equally with disks above

HAWLEY, Kent Allen

U

1,772,947

August 12, 1930

Electric Insulator
Protective metal shield to cover linkage or connectors for suspension disks to prevent moisture damage to threaded connectors

HOFFMAN, Gottfried

Motor-Columbus Aktiengesellschaft Fur Elektrische Unternehmungen

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.

U

1,776,795

September 30, 1930

Coupling for Wires and Cables
Metal cap for suspension insulator with cotter pin to prevent the pin from slipping out of the cap.

OSBORNE, David Henry

Electric Service Supplies Co.

U

1,778,152

October 14, 1930

Multiple Skirt Suspension Insulator
Odd two-disk suspension made in one piece with metal caps on each end

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

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

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.

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.

U

1,784,392

December 9, 1930

Manufacture of Insulators
Suspension insulator with glazed sanded surfaces to improve strength of cap

ROWLAND, Davidge H.

U

1,794,111

February 24, 1931

Multiple Skirt Insulator
Suspension insulator with multiple skirts and pins or hooks embedded in the ends

U

1,799,580

April 7, 1931

Insulator
Suspension insulator composed of wood fibers impregnated with tar

U

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

U

1,811,530

June 23, 1931

Insulating Device
Ribbed suspension insulator with deep hollow interior to receive linkage hardware to connect the next insulator

BAUM, Frank G.

U

1,819,380

August 18, 1931

Insulator Connection
Suspension insulator cap and pin that can be locked in securely

HAWLEY, Kent A.
OSBORNE, David H.

U

1,819,748

August 18, 1931

Insulator
Suspension of the cap and pin design specially designed to make a strong joint for the cap and pin

U

1,822,485

September 8, 1931

Insulator
Method of attached metal cap and pin to suspension insulators

U

1,824,767

September 29, 1931

Insulator Connector
Metal linkage for link-type suspension insulators similar to Hewlett or pork liver

BARROW, George M.

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.

U

1,848,622

March 8, 1932

Insulator
Suspension rod with metallic shields to keep upper and lower parts dry to prevent electrical leakage

JOHNSTON, Robert M.
MCLACHLAN, Alexander

U

1,851,671

March 29, 1932

High Tension Insulator
Suspension insulator with metal attachments fixed with zinc, lead/antimony alloys

U

1,861,316

May 31, 1932

Insulator
Suspension (Hewlett type) with oil reservoir

MONTANDON, Arthur

1/2 to Societe Gen. D'Entr.

U

1,868,479

July 26, 1932

Compensating Strut Type Insulator
Suspension insulator cap and pin with special rings to aid strength of cement joint

U

November 22, 1932

Pin Centering Device and Cushion Retainer
Means to keep pin centered in a suspension insulator during cementing

ROBERTSON, John Cullen

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.

U

1,901,349

March 14, 1933

270 Degree Clamp
Bracket or clamp for high tension suspension insulator used to redirect the conductor 270 degrees in another direction. Clamps also found with patent 2,111,505.

LAPP, John S.

Lapp Insulator Co., Inc.

U

1,910,333

May 23, 1933

Insulator Connection
Suspension with special cotter pin to prevent cap and pin from coming disconnected

U

1,925,211

September 5, 1933

Art of Assembling Insulators
Method of cementing pin in suspension insulator to remove air

U

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

U

1,937,620

December 5, 1933

Insulator
Suspension cap and pin designed to improve and strengthen the cement joint

U

December 5, 1933

Insulator
Pin for suspension disk

U

December 19, 1933

Means for Suspending Porcelain Insulators
Means of connection suspension disks with internal threaded rings to receive external threaded connector from underneath disk

BUXTON, Paul W.

Wheeler Reflector Co.

U

1,941,749

January 2, 1934

Insulator
Suspension insulator with upwardly projecting wings on the cap to serve as flux control

HILLEBRAND, William A.

VINCENT, Harold Blanchard
SLEEMAN, Harold Parker

The Ohio Brass Co.

U

1,947,321

February 13, 1934

Arcing Horn for Insulators
Arcing horns for Hewlett or other suspension insulator string

U

1,958,880

May 15, 1934

Suspension Insulator
Suspension insulator cap and pin design to reduce stress (see 1,822,485)

ARNOLD, Edwin E.

U

1,960,147

May 22, 1934

Insulator and Method of Treating It
Suspension, glass under cap is etched & treated with graphite

U

September 4, 1934

Insulator
Cementing and design technique to improve cement joint in cap and pin suspension and equipment support insulators

U

October 2, 1934

Insulator
Suspension disk strengthen by acid etching glass under cap

U

October 30, 1934

Insulator
Suspension cap and pin designed with slipping cement joints to improve strength

U

November 20, 1934

Insulator
Suspension cap and pin designed to improve strength of cement joint

U

January 15, 1935

Insulator
Suspension pin

U

March 12, 1935

Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head

U

March 12, 1935

Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head

U

March 12, 1935

Insulator
Suspension for heavy loads with improved cap and pin design; improvement of A. O. Austin patent (see 1,994,265)

SMITH, William A.

U

1,994,292

March 12, 1935

Insulator
Special design of pin for suspension insulator

U

April 16, 1935

Insulator Suspension Hardware
Links for Hewlett type suspension disks

U

2,008,341

July 16, 1935

High Tension Insulator
Suspension disk with additional cement in pinhole with asphalt coating

STROUP, Charles L.

Jeffery-Dewitt Insulator Co.

U

2,008,342

July 16, 1935

Insulator
Suspension disk with metal spider cap over crown cemented in porcelain

STROUP, Charles L.

Jeffery-Dewitt Insulator Co.

U

2,008,414

July 16, 1935

Insulator
Suspension cementing procedure

FISCHER, Eugene H.

U

2,011,137

August 13, 1935

Insulator
Suspension cap with spring rollers to allow slippage of the cap and cement to improve strength

U

December 10, 1935

Shielded Cemented Type Insulator
Suspension cementing procedure using metal cap (disc, J-D type & bus)

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.

U

2,072,201

March 2, 1937

Insulator and Method of Making It
Suspension, glass, coat crown with graphite prevents cement adhesion

U

March 15, 1938

Method of Making a Forged Clamp
Method of making the curved dead-end clamp described in patent 1,901,345.

CARD, Charles S.

The Brewer-Titchener Corp.

U

2,135,326

November 1, 1938

Method of Assembling Electric Insulators
Method of cementing metal cap on a suspension insulator to prevent excess cement at the joint and thus preventing electrical discharge from the excess cement

U

December 6, 1938

Strain or Suspension Clamp
A combined strain and suspension clamp

MCLACHLAN, Alexander

Jeffery Dewitt Insulator Co.

U

2,146,344

February 7, 1939

Electric Insulator
Suspension cementing technique to reduce damage from expansion

U

June 13, 1939

Insulator
Suspension insulator with stepped rings to allow washing by rain and greater leakage length

TAYLOR, John J.

U

2,173,292

September 19, 1939

Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head

U

April 30, 1940

Insulator
Suspension disk with crown more tempered than skirt for strength

U

July 14, 1942

Method of Assembling Insulators
Method of using a metal alloy to cement the cap and pin on a glass suspension disk

U

August 21, 1945

Electric Insulator
Suspension insulator with improved cementing methods

U

June 15, 1948

Insulator
Suspension, pin design to prevent expansion stress from corrosion

U

June 15, 1948

Insulator
Suspension with moisture resistant cushion at bottom of cap and pin

U

August 14, 1951

Clamp for Electrical Conductors
Metal clamp to secure the conductor to the bottom of the string of suspension insulators

SMOTHERS, William J.
SELSING, Jorgen

Porcelain Insulator Co.

U

3,024,303

March 6, 1962

Glazed Insulator Which Comprises a Ceramic Body and a Primary Coat Under the Glaze Which has a Lower Coefficient of Thermal Expansion than the Ceramic Body
Suspension insulator with compression glaze coating under outer glaze surface

ROSS, Frank S.
VAN TUYL, Thomas Oliver

The Ohio Brass Co.

U

3,054,704

September 18, 1962

Insulator Assembly Method and Apparatus
Suspension, method of sealing cement to improve strength during curing

U

November 9, 1965

Cast Aluminum Insulator Cap
Suspension cap made of cast aluminum

American-International Aluminum Corp.

U

3,444,314

May 13, 1969

Suspension Insulator Having a Cap With Internal Load Transmitting Surfaces
Suspension metal cap designed with steps to aid in holding cement on insulator

VAN TUYL, Thomas Oliver

U

3,923,570

December 2, 1975

Manufacture of Insulators
Method of cementing suspension insulators using thick cement and high intensity vibrations

WILLEM, Michel

Societe Europeene d'Isolateurs en Verre (SEDIVER)

U

4,427,844

January 24, 1984

Metal Capped Electrical Insulator and Method of Making Same
Suspension (glass) where the aluminum alloy cap is molded in place

SABY, Charles
JEANNIN, Serge
PERRIER, Jean-Paul

Ceraver

U

4,443,659

April 17, 1984

Glaze to Pin Connection for an Electrical Insulator with Embedded Metal Fitting
Suspension with semi-conducting glaze & conducting coating on cement

U

June 18, 1985

High Voltage Insulator Assemblage Having Specially Chosen Series Resistance
Suspension insulator that eliminates flashover due to dirty insulators

VERMA, Mandranjan

KITO, Kuniji
WATANABE, Akihiro

U

4,559,414

December 17, 1985

Electrolytic Corrosion Resistant Insulator
Suspension insulator that is corrosion resistant

NAKAMURA, Itsushi
MORI, Shigeo

U

4,658,092

April 14, 1987

Explosion Preventing Suspension Insulator
Suspension insulator using cement to prevent damage to insulator from expansion

MORIYA, Tsutomu
SHINOKUBO, Hiroyuki

U

4,782,198

November 1, 1988

Suspension Insulators
Suspension (porcelain) with glazed head for cementing metal cap

SEIKE, Shoji
TOTOKI, Takao
MIMA, Toshiyuki

U

4,782,199

November 1, 1988

Insulators Having Improved Steep Wave Front Characteristics
Suspension, head treated with special glaze to strengthen cap/cement

WATANABE, Akihiro
MORI, Shigeo

U

4,814,551

March 21, 1989

Anticorrosive Insulator
Suspension (anticorrosive), cementing metal cap for DC service (Japan)