USRE6895E - Improvement in mineral wool - Google Patents

Description

J. PLAYER, Decd.

AUGUSTA AMELIA G-LEITSMANN, Admx.

MINERAL WOOL.

No. 6,895. Reissu ed Feb. 1, 1876'.

MTIiMQJ:

UNITED STATES PATENT OFFICE.

AUG USTA AMELIA GLEITSMANN, 0F ASHEVIDLE, N. (3., ADMINISTRATRIX OF JOHN PLAYER, DECEASED, FOR IIERSELF, AND AS ASSIGNEE OF HENRY MOALLISTER, J1t., ADMINISTRATOR OF.S A[D JOHN PLAYER.

IMPROVEMENT IN MINERAL WOOL.

Specification forming part of Letters Patent No. 103,650 dated May 31, 1870; reissue No. 0,895, dated February 1, 1876; application filed December 26, 1875.

Dlvrsrolv B.

To all whom it may concern:

Be it known that JOHN PLAYER, deceased, sometime of Norton, near Stockton-on-Tees, in the county of Durham, in England, and a subject ot' the Kingdom of Great Britain, late of the city and county of Philadelphia, in the State of Pennsylvania,was in his lifetime the inventor ordiscovcrer of an'lmproved Mineral \Vool.

The abundance and cheapness of' the readymade vitrified material ali'orded by the waste of slag; or scoria at blast-'i'urnaces and glassworks will doubtless render it unnecessary to prepare scoriaceous substances expressly for this product; but should it .be deemed or found more economical or otherwise desirable, a mixture of silicious, calcareous, and other ingredients may readily be made and vitrified after various well-known formulae.

From the slag or scoriu, which may be subjected to the process hereinafter described, is obtained the improved vitrified fibrous material or mineral wool, highly non conducting, incomlmstible;and especially adapted to many uses, of which it may suifice to enumerate the covering or jaeketing ot' steam-pipes, steamboilers, hot-blast pipes, and the like, thelining: of refrigerators, the filling of fire-proof safes, and other similar applications for pre venting the transmission of \heat or arresting the spread of fire. This materialmay be used -in bulk or formed into sheets or pads in the same manner as hair, felt, or cotton wadding is formed, or it may he spnn intorope or yarn, and applied in various ways that are obvious.

The invention consists of the new mineral wool or fibrous material, which is obtained by melting slag, scoria, or scoriaceous substances, in a cupolaor furnace of suitable construction adapted to the purpose, and from which a suitable conduit is provided, so that the melted mass may be allowed to flow from the eupola ori'urnace in a small stream. Upon this flowing' mass a stream or blast of air-by preference a hotblast-is directed by any suitable device, and this blast of air, acting upon the flowing slag or other 'mineral, separates or subdividcs it into exceedingly fine filaments or fibers, which are blown off into and retained in a suitable chamber or room provided over the blast. From this receptacle it may be removed to be packed or for use. Instead of a blast of air or hot air alone, a jet of air and steam or of steam alone, either ordinary or superheated, maybe directed upon the flowing slag or other mineral withoutafl'ecting the result otherwise than perhaps. in degree. 7 The annexed drawing will show the form of apparatus which the said JOHN PLAYER had devised for the production of said mineral wool.

Figure 1 is an elevation of a furnace, with the chamber .for receiving the mineral wool,

in section; Fig. 2, a'plan with the chamber in section. i

The blast of'air or jet of steam, or of air and steam, may be obtained 'or derived from a fan,

or from a boiler and fan, or in any other way.

The slag or scoria; or seoriaceous substance, is melted or produced in a suitable furnace, A, and flows down an inclined hearth, B, into a chamber, C, where it is exposed to a blast or jct i'rom a pipe or nozzle or tuyere, D. The fibrous material produced by the blast being very light is blown against the walls of the chamber and deflected into the chamber behind the blast-pipe, where it accumulates until removed.

It is obvious thatthe blast orjet might be applied to the slag as it runs from an ordinary blast-furnace and thus save the reheating of the slag, and this would perhaps constitutethe simplest mode of producing the wool.

The apparatus above described, however, forms no part of the subject-matter herein claimed, asthe same may be varied at the dietates of convenienceor economy; but

What is claimed herein as the invention of the said JOHN PLAYER, is-

As a new article of manufacture, the improved mineral wool herein described.

V. .K. Serum, GEO. A. Iloovsa.

Images