US587799A - Composition of matter and method of - Google Patents

Description

106. COMPOSlTlONS, (Cross Reierenca COATING 0R PLASTIC.

UNITED STATES PATENT OFFICE.

JAMES Q. DIXON, OF SAN FRANCISCO, CALIFORNIA.

SPECIFICATION forming part of Letters Patent No. 587,799, dated. August 10, 1897. Application filed August 29, 1 896. Renewed June 21, 1897. Serial No. 642,010. (No specimens.)

To all whom it may concern.-

Be it known that I, J AMES-Q. DIXON, a citizen of the United States, residing in the city of San Francisco, State of California, have invented certain new and useful Improvements in the Treatment of Manufactured Glass Articles, more particularly incandescent electric lampsviz. the globes of same; and I do hereby declare the following to be a full, clear, and exact description thereof.

It is found in practice that rays of light passing through glass globes, colored, ground, or frosted, in process of manufacture are absorbed and counter-reflected to a greater or less extent and a portion lost for general illuminating purposes, whereas light having passed through such a globe and striking on small reflecting-surfaces immediatelv outside such a globe will be divergently reflected and add to the general illuminating power of the lamp, while the light will be generally diffused and not be reflected in one direction more than in another.

The objects of the invention are to prevent absorption and counter-reflection of light and to provide a globe in which the reflection and dispersion of light-rays will take place from the outside surfaces of particles outside the globes and in which the light will not have .to pass through either colored or ground glass to any extent.

The invention consists, first, in a composition of matter for the designated purposes consisting of materials substantially as and in the proportions hereinafter specified, and, secondly, in the manner of applying the said composition of matter, thus comprising a method, which method would be practicable only with the designated composition of matter or its equivalent.

The following are the ingredients used in the designated composition, of matter, taken in about the proportions set forth: solution of silicate of soda thirty-two ounces; solution of sllicate of potassai eight ounces; silicate of iron, one ounce, an powdered glass, a sullicient quantity to give the desire opacity.

The method of using this composition of matter is as follows: The globe is thoroughly ter is nearly dry is brushed off, removing undetached or loosely adherent particles. It is then laid in one hand, more frosting thrown on, and the hand being lightly closed it is rotated therein by the other hand, which operation presses a suitable quantity of the. loose frosting into that already attached to the globe and rounds up andv makes even the whole. The globe is then laid aside in a proper place to dry, and when perfectly dry it is rotated once more in the hand, brushed ofi, and is ready for attachment to the light by the ordinary well-known socket or other suitable means.

The proportion of the silicate of iron to the mixed silicates of soda and potassa may vary to a certain extent without material result.

of iron adds very materially to the desirable qualities of the composition, and being a silicate it assimilates itself readily to the other silicates in the composition.

While the described composition of'matter and method are particularly adapted for use on electric lamps, it is evident that their use may be much more widely extended. I therefore do not desire to restrict the use of the invention to that particular article, as other articles of glass or equivalent materials may be similarly operated on.

I am aware that lamps and theirbulbs have been colored, stained, and frosted in various ways, and such I do not desire to claim, broadly; but,

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

1. A composition of matter'for the purpose set forth, consisting of the following ingredients in about the designated proportions, namely: spluti o n of silicate of soda, solution of siligate arporassa 'sineatmr iron, and

. lfl-5s, bi' olfen into small fragments or reduced to a powder, substantially as specified.

2. The method of. applying the herein-descril 2d composition of matter, or its equivalent, to the surfaces of suitable articles, which method consists in applying the com covered with this mixture, and when the lat- 5o It is found by experience that the silicate position moist, permitting it fiearly to dry, ai'iicle isreadyforuse, substantially asspeciapplying a little more of the same material, fled. pressing it firmly into that first applied, \vh ile rotating the article to get an equal thickness JAMES DIXOI\' 5 of the application around it and smoothing \Vitnesses:

or leveling the surface thereof, then permit- FOREST P. TRALLES,

ting the whole to dry perfect-1y so that the WILLIAM A. THOMPSON, Jr.