US684493A - Process of making incandescent mantles. - Google Patents

Process of making incandescent mantles. Download PDF

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Publication number
US684493A
US684493A US866100A US1900008661A US684493A US 684493 A US684493 A US 684493A US 866100 A US866100 A US 866100A US 1900008661 A US1900008661 A US 1900008661A US 684493 A US684493 A US 684493A
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United States
Prior art keywords
mantles
mantle
making
solution
fabric
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Expired - Lifetime
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US866100A
Inventor
Woodbridge H Birchmore
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CLARKSON A COLLINS
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CLARKSON A COLLINS
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Priority to US866100A priority Critical patent/US684493A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21H—INCANDESCENT MANTLES; OTHER INCANDESCENT BODIES HEATED BY COMBUSTION
    • F21H1/00—Incandescent mantles; Selection of imbibition liquids therefor

Definitions

  • My invention relates to that class of mantles used for the purpose of illumination which become incandescent when subjected to a heating-flame.
  • Such mantles haveheretofore been made by saturating a suitable combustible fabric with a solution of those metallic earth oxids which when heated become highly incandescent, from which the fabric is then burned out, leaving a skeleton consisting entirely of the metallic earth oXids.
  • Such mantles are extremely fragile and areexpensive to make on account of the high cost of the materials employed.
  • my invention broadly consists in making an incombustible mantle base, form, or skeleton which may be only slightly incandescent when heated, but which shall be relatively rigid and durable and which may be made of inexpensive materials, and then giving to such form a thin coating of the metallic earth oxids, whereby all their light giving power is attained for the mantle by the use of the smallest possible amount of material.
  • any suitable combustible fabric such as the usual well-known mantle material woven of cotton, which, either before or after being saturated, as hereinbefore described, is formed into mantles of any usual or desired shape and size.
  • the mantle material I saturate with a solution formed by adding oxid of magnesium to a solution of oxid of zinc dissolved in hydrochloric acid until the solution is practically neutral and diluted with water until thin enough to thoroughly penetrate and fill the pores of the fabric.
  • the mantle fabric thus saturated having been given the shape which the mantles are to have is thoroughly dried and then exposed to a hot highly-oxygenated flame until the woven fabric of the mantle is entirely burned out and the metallic salts are completely oxidized, the completion of this step being indicated by the mantle becoming incandescent.
  • the mantles thus formed I then treat after cooling with a dilute solution of a mixture of the metallic earth oxids, which become incandescent when heated, such as has heretofore been used in making incandescent. mantles, as is well known in the art, so as to cover the mantle with a thin coating of such solution.
  • a dilute solution of a mixture of the metallic earth oxids which become incandescent when heated, such as has heretofore been used in making incandescent.
  • mantles as is well known in the art, so as to cover the mantle with a thin coating of such solution.
  • I apply this solution to the mantles in a fine spray; but any other suitable method of application by which the desired thin coating can be obtained may be employed,
  • the mantles are then ready for use.
  • the incombustible mantle form or base formed from the oXychlorid of zinc and oxid of magnesium is much more rigid and durable than the mantles heretofore known, and the coating of the metallic earth oxids applied to this base gives to the mantle the same lighbgiving power possessed by those composed entirely thereof.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

UNITED Srn'rns PATENT Fries.
WOODBRIDGE n. BIRGHMORE, or BROOKLYN, YORK, nssieivon or ONE-HALF TO OLARKSON A. COLLINS, on new YORK, N. Y.
eaooess F MAKING mcANnEscmc MANrLEs.
srno'rrrcn'rron forming part of Letters Patent No. 684,493, dated October 15, 1901. Application filed March 14, 1900. Serial No. 8i66l. (No specimens.)
To aZZ whom it may concern.-
Beit known that I, WOODBRIDGE K13111011- MORE, a citizen of the United States, residing in the borough of Brooklyn, city of New York, county of Kings, in the State of New York, have invented a new and Improved Process of Making Incandescing Mantles, of which the following is a specification.
My invention relates to that class of mantles used for the purpose of illumination which become incandescent when subjected to a heating-flame. Such mantleshaveheretofore been made by saturating a suitable combustible fabric with a solution of those metallic earth oxids which when heated become highly incandescent, from which the fabric is then burned out, leaving a skeleton consisting entirely of the metallic earth oXids. Such mantles are extremely fragile and areexpensive to make on account of the high cost of the materials employed.
To the end of obviating these objections and producing mantles of greater rigidity and durability at less cost my invention broadly consists in making an incombustible mantle base, form, or skeleton which may be only slightly incandescent when heated, but which shall be relatively rigid and durable and which may be made of inexpensive materials, and then giving to such form a thin coating of the metallic earth oxids, whereby all their light giving power is attained for the mantle by the use of the smallest possible amount of material. In order to accomplish this, I take any suitable combustible fabric, such as the usual well-known mantle material woven of cotton, which, either before or after being saturated, as hereinbefore described, is formed into mantles of any usual or desired shape and size. The mantle material I saturate with a solution formed by adding oxid of magnesium to a solution of oxid of zinc dissolved in hydrochloric acid until the solution is practically neutral and diluted with water until thin enough to thoroughly penetrate and fill the pores of the fabric. The mantle fabric thus saturated having been given the shape which the mantles are to have is thoroughly dried and then exposed to a hot highly-oxygenated flame until the woven fabric of the mantle is entirely burned out and the metallic salts are completely oxidized, the completion of this step being indicated by the mantle becoming incandescent. The mantles thus formed I then treat after cooling with a dilute solution of a mixture of the metallic earth oxids, which become incandescent when heated, such as has heretofore been used in making incandescent. mantles, as is well known in the art, so as to cover the mantle with a thin coating of such solution. Preferably I apply this solution to the mantles in a fine spray; but any other suitable method of application by which the desired thin coating can be obtained may be employed, The mantles are then ready for use. The incombustible mantle form or base formed from the oXychlorid of zinc and oxid of magnesium is much more rigid and durable than the mantles heretofore known, and the coating of the metallic earth oxids applied to this base gives to the mantle the same lighbgiving power possessed by those composed entirely thereof.
I am thus enabled to produce by means of my invention a rigid durable mantle of great illuminating power at an extremely low cost, since the materials of which the base is composed are inexpensive and the amount of the expensive metallic earth oXids required is reduced to a minimum.
What I claim as new, and desire to secure by Letters Patent, is=- The process of making incandescing mantles which consists in saturating a combustible fabric with a solution of oxid of magnesium in oxychlorid of zinc, burning out the combustible fabric therefrom and coating the mantle form thus made with a solution. of metallic earth oxids.
In testimony whereof I have hereunto subscribed my name this 13th day of March, A. D. 1900.
WOODBRIDGE ll. BIROlllllORE.
Witnesses:
CHAS. METZ, CLARKSON A. COLLINS.
US866100A 1900-03-14 1900-03-14 Process of making incandescent mantles. Expired - Lifetime US684493A (en)

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