US835685A

US835685A - Insulating material and method of manufacturing same.

Info

Publication number: US835685A
Application number: US31342906A
Authority: US
Inventors: George Kelly
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-04-24
Filing date: 1906-04-24
Publication date: 1906-11-13
Anticipated expiration: 1923-11-13

Description

. UNITED STATES PATENT QFFIGE.

GEORGE KELLY, OF HINSDALE, ILLINOIS.

, Specification of Letters Patent.

Patented Nor r. 13, 19 06,

Application fil d April 24:, 1906. Serial No. 313,429.

To aZZ whom it may concern:

Be it known that I, GEORGE KELLY, a citizen of the United States, residing at Hinsdale, in the county of Dupage and State of Illinois, have invented a new and useful Insulating Material and Method of Manufacturin the Same, of which the following is a speci. cation.

In the manufacture of zinc oXid the vapors or fumes from the roasted zinc ores placed in the furnaces ascend and are forced or blown through large metal tubes for a considerable distance. At the ends of said tubes are located woven-fabric chutes, the fabric chutes having been found to be most efficient for conveying the condensed oXid into the receptacles for the same. It is a well-known fact to those skilled in the art that the fabric of which the chutes are made .soon becomes scorched and unfit for use, necessitating the constant renewal of the chutes and the discarding of the old material. The discarded fabric is, however, thoroughly saturated with the oXid, and I have discovered that this material, with the employment of other inexpensive ingredients, can be made into highrade insulating material at small cost, and it 1s the primary object of this invention 'to thus utilize the same.

There are a number of ways in which the invention may be practiced and the desired article roduced. For instance, the discarded impregnated cloth or fabric may be cut into sheets of the desired size and moistened by brushing them with or dipping them into a liquid vulcanizing and binding composition. While this composition may perhaps be made of different ingredients, it is referably com osed of rubber, sulfur, and liquid glass, (si icate of sodium.) These ingredients are preferably, though not necessarily, substantially of the followin proportions, measured by weight: ninetyve arts,

of liquid glass, ten to fifteen parts of ru ber, and five parts of flowers of sulfur. The

sheets, after having been moistened, are' placed one upon the other, allowed to artly dry or set, are afterward pressed, and nally vulcanized under pressure and at moderate heat. The resultant product is a high-grade electric insulating board, slab, plate, or the like that is thoroughly homogeneous, will withstand high voltage without breakin down, is both fire and moisture proof, an is capable of withstanding comparatively heavy mechanical stress or strains.

, The use of theabove ingredients is impor tant. In thefirst lace, thefabric constitutes a strong body, tfi therein cooperates with the rubber and sulfur in formlng an excellent binder and vulcanizing agent, and the silicate of sodium or liquid glass serves not only to make the article fireproof, but is itself a binder, and, furthermore, acts as a solvent or vehicle for the e zinc oxid impregnated sulfur and rubber, causing the same to thor- I oughly saturate thefabric and be brought,

Still another mode of producing the article is to em loy the binding and vulcanizingcompoun set forth in 'copending application, Serial No. 312,4 i1. forth, said compound consists of .a mineral vulcanizable gum or asphalturn, preferably that commercially known as Gilsonite and liquid glass. Equal parts, by weight, of these ingredients are takeneand are thoroughly commingled." The above-described discarded fabric impregna with zinc oxid is ground up to theproperconsistency in any ordinary rubber-mill with the above compound and is then rolled or otherwise pressed or formed into sheets, tubes, or other articles, which are vulcanized under pressure and heat. The resultant product is a dense oompact article having the advantages of the mate'rial first described.

' Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. That improvement in the process of manufacturing insulating material, which consists in intermingling with a fiber havin zinc oxid' therein, a vulcanizing-binder, an

vulcanizing the composition under heat and pressure.

2. That improvement in the process of manufacturing insulating material, which consists in intermingling with waste fiber having zinc oxid incorporated therewith, a vulcanizing-binder, and vulcanizing and pressing the composition.

The articles thus As thereln set 3. That improvement in the process of manufacturing insulating material, which consists in taking a fabric impregnated with zinc oXid, incorporating therewith a binder and vulcanizing agent, and vulcanizing the composition under heat and pressure.

4. That improvement in the process of manufacturing insulating material, which consists in taking a fabric impregnated with zinc oXid, incorporating therewith a binder and vulcanizing agent, and a fireproofing material, and vulcanizing the composition.

5 That improvement in the process of manufacturing insulating material, which consists in taking a waste fabric impregnated with zinc oXid, incorporating therewith a vulcanizing-gum, and vulcanizing the .composi* tion.

6. That improvement in the process of manufacturing insulating material, which consists in taking fabric impregnated with zinc oXid, incorporating therewith a vulcanizing-gum and a fireproofing material, and vulcanizing the same.

7. That improvement in the process of manufacturing insulating material, which consists in taking fabric impregnated with zinc oxid, incorporating therewith rubber, and vulcanizing the composition.

8. That improvement in the process of manufacturing insulating material, which consists in taking fabric impregnated with zincoXid, incorporating therewith rubber and sulfur, and vulcanizi'ng the composition,

9. That improvement in the process of manufacturing insulating material, which consists in taking fabric impregnated with zinc" oxid, incorporating therewith rubber, sulfur and liquid glass, and vulcanizing the composition.

10. That improvement in the process of manufacturing insulating material, which eaaeee consists disintegrating fabric impregnated with an oXid, intermingling therewith a vulcanizing agent, and afterward vulcanizing the composition.

11. That improvement in the process of manufacturing insulating material, which consists in disintegrating waste fabric that is impregnated with an oXid, intermingling therewith a vulcanizing agent and a fireproofing material, and. afterward vulcanizing the composition under heat and pressure.

12. That improvement in the process of manufacturing insulating material, disintegrating fabric impregnated with zinc oXid, interming'L-ing therewith rubber, sulfur and liquid glass,"and forming articles of said composition.

13. As an article of manufacture, a vulcanized insulating material, comprising a fabric impregnated with oXid of zinc, and a vulcanizing agent and binder.

14. As an article of manufacture, a vulcanized insulating material comprising fabric impregnated with maid of zinc, a vulcanizing agent and a fireproofing material.

15. As an art cle of manufacture,,a,vulcanized insulating material comprising a fabric impregnated with oxid of zinc, and a binder comprising rubber, sulfur and liquid glass.

16. As an article of manufacture, a vulcanized insulating material, comprising a disintegrated fabric that is impregnated with oxid of zinc, and a binder comprising rubber, sulfur and liquid glass intermingled therewith.

In testimony that I claim the foregoing as my own I have hereto a'fIiXed my signature in the presence of two witnesses.

GEORGE KELLY.

Witnesses:

JOHN I-LSreeERs, BLANCHE J. KALDENBACK.