Walter J Harris

US Patent:

43268714, Apr 27, 1982

Filed:

Feb 11, 1980

Appl. No.:

6/120022

Inventors:

Walter W. Harris - Toledo OH

Assignee:

Manville Service Corporation - Denver CO

International Classification:

C03B 37025

US Classification:

65 12

Abstract:

This invention relates to glass filament production. Conventionally the hollow cooling tubes and/or solid metal bars utilized in the making of continuous glass fibers have been constructed of high temperature corrosion resistant materials whose costs are exorbitant for extensive present day factory operations. The present invention dramatically reduces the price of cooling tubes 24 suitable for use in the making of glass filaments by coating or cladding a relatively inexpensive base or substrate metal 48 such as nickel, Inconel, molybdenum, copper, alloys thereof or a refractory material with a high temperature corrosion resistant material 50 such as the noble metals, e. g. platinum, palladium, rhodium, iridium, gold, silver or alloys thereof. Fins 52 which may be attached to the cooling tubes 24 may be made either of a solid noble metal or may also be coated or clad in the same manner as the cooling tubes 24.

US Patent:

39559513, May 11, 1976

Filed:

Jun 2, 1975

Appl. No.:

5/582574

Inventors:

Walter William Harris - Toledo OH
David Jon Pickard - Waterville OH

Assignee:

Johns-Manville Corporation - Denver CO

International Classification:

C03B 3702

US Classification:

65 1

Abstract:

Continuous inorganic fibers such as glass fibers are made by drawing molten material from orifices in the bottom of a refractory bushing. Occasionally during operation one or more tips will become clogged by unmelted particles in the molten material. These clogged tips will no longer produce a continuous fiber, but instead drip causing defects and breakouts which must be corrected. In the past, several methods have been tried to plug off these clogged tips, but none have been successful. The present invention involves a method of plugging a clogged tip while the bushing is at an elevated temperature using a small refractory plug. The present invention permits the bushing to be operated for its normal life thus producing a significant improvement in operating costs.

US Patent:

40437787, Aug 23, 1977

Filed:

Oct 5, 1976

Appl. No.:

5/729914

Inventors:

Walter William Harris - Toledo OH

Assignee:

Johns-Manville Corporation - Denver CO

International Classification:

C03B 3702

US Classification:

65 1

Abstract:

The present invention involves an electrical resistance heated bushing for melting inorganic materials, particularly glass, and for exuding molten material through a plurality of orifices in the bushing to form fibers suitable for coating with metal in conventional ways. The bushing of the present invention has an output capacity of almost 300% that of typical prior art bushings used for this purpose. Furthermore, the bushing of the present invention has increased operating efficiency substantially. The average running time before a breakout occurs has been extended 5 to 10 fold.

US Patent:

43976654, Aug 9, 1983

Filed:

Jan 18, 1982

Appl. No.:

6/339964

Inventors:

Walter W. Harris - Toledo OH

Assignee:

Manville Service Corporation - Denver CO

International Classification:

C03B 37025

US Classification:

65 12

Abstract:

This invention relates to glass filament production. Conventionally the hollow cooling tubes and/or metal bars utilized in the making of continuous glass fibers have been constructed of high temperature corrosion resistant materials whose costs are exorbitant for extensive present day factory operations. The present invention dramatically reduces the price of cooling tubes 24 suitable for use in the making of glass filaments by coating or cladding a relatively inexpensive base or substrate metal 48 such as copper or refractory metal such as nickel, Inconel or molybdenum, and alloys thereof with a high temperature corrosion resistant material 50 such as the noble metals, e. g. , platinum, palladium, rhodium, iridium, gold, silver or alloys thereof. Fins 52 which may be attached to the cooling tubes 24 may be made either of a solid noble metal or may also be coated or clad in the same manner as the cooling tubes 24.

US Patent:

39973093, Dec 14, 1976

Filed:

Jul 31, 1975

Appl. No.:

5/600651

Inventors:

Walter William Harris - Toledo OH

Assignee:

Johns-Manville Corporation - Denver CO

International Classification:

C03B 3702

US Classification:

65 12

Abstract:

Improved corrosion resistant cooling tube support members are provided for fiberizing bushings used to make fibers from molten inorganic material such as glass. The support members allow an operator to replace defective cooling tubes relatively easily without cooling down the bushing and without requiring assistance from a second operator.