US421904A - Process of bleaching wax - Google Patents

Description

(Specimens.)

W BRUENING PROCESS OF BLEAGHING WAX. No. 421,904.

Patented Pby25. 1890.

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WVILLIAH BRUENING, OF EAST ORANGE, NElV JERSEY.

PROCESS OF BLEACHING WAX.

SPECIFICATION forming part of Letters Patent No. 421,904, dated February 25, 1890. Application filed August 3, 1889. $erial No. 319,671. (Specimens) To all whom it may concern.-

Be 1t known that 1, WILLIAM BRUENING, a

citizen of the United States, and aresident of East Orange, in the county of Essex and State of New Jersey, have invented anew and useful Improvement in Processes for Bleaching Wax, of which the following is a specification. I V

For a great number of uses to which wax is appropriated it is necessary that it should be perfectly white. For this end wax has been bleached by exposing fine shreds, strips, or sheets of wax on a bleaching-ground to the action of light, air, and moisture, then remelting it, and repeating the operation of remelting and exposing, so as to make the bleaching complete throughout. Wax has also been bleached by the use of chlorine or by mixing with an emulsion of Wax or with molten wax alkaline salts-such as nitrates or chromatesand gradually stirring in sulphuric acid. The repeated reduction of wax into fine shreds or thin strips and sheets involves much time and labor, while in the other methods the wax must be hot or liquid and demands continual attention. I

The object of my invention is to save time and labor in the process of bleaching; and for this purpose my invention consists in reducing the wax to a fine powder by atomizing molten wax by steam or air jets, collecting the powder, and exposing the same to some bleaching agent.

In carrying out my invention I use, by preference, apparatus such as illustrated in the accompanying drawings, in which Figure 1 is a vertical section of the atomi-zing apparatus; Fig. 2, a section of the apparatus for bleaching, and Fig. 3 an elevation of the wash-barrel.

Similar letters indicate corresponding parts.

A, Fig. 1, is a tank or barrel for melting wax; a, a steam-coil within the tank; Z), a pipe leading from the barrel A to a trough B, and provided with a cock 0. The trough B is provided with a steam-jacketor heated by other suitable means.

O is an atomizer, consisting of a series of parallel steam-nozzles (Z and a series of suction-pipes 6, connected to the nozzles and dipping into the molten wax in the trough B.

D is a chamber, the walls of which are formed of muslin supported on a light framework.

fis a pipe or bag leading from the top of the chamber D into a tank g.

A water-spray apparatus his placed into the top of the pipe or bag f.

Fig. 2 represents the bleaching apparatus.

E is a retort for gen erating chlorine gas, and F a water-sealed chamber formed by the fixed tank 2' and the suspended top j. A pipe in leads from the generator E to the upper part of the chamber F.

Z is a tray for atomized wax.

G, Fig. 2, is awash-barrel of the usual construction.

The wax is first melted in the tank A, whence a regulated supply is admitted into the trough B. The steam-jets draw the wax from the trough and atomize it. At the same vtime the jets draw into the chamber more or less cold air, which reduces the temperature. The air escapes through the walls of the chamber, and the cooling and condensation of the steam are assisted by the spray of water from h. The cold air originally contained in the chamber aids in reducing the temperature, and the larger the chamber in proportion to the capacity of the jets the longer the process can be continued without interruption. The atomized wax is removed from time to time, sifted, put on the tray Z, and placed into the bleaching apparatus, Fig. 2, where it is bleached by exposure to the action of chlorine gas. The bleached wax is repeatedly washed in a barrel, Fig. 3. It is then melted in water and run oif into hot water in the usual manner.

I do not restrict myself to the use of the apparatus shown and described, nor to any particular bleaching agent. I have also used compressed air for atomizing in place of steam.

Any kind of chamber may be used with the atomizer, provided itbe kept cool' enough to prevent melting of the atomized wax.

lVhen compressed air is used for atomizing, the danger of melting the Wax is obviated; but I prefer steam, which, in connection with air and light, has a bleaching effeet, so that by repeated atomizing alone they collecting the resulting powder, and bleaching the same by exposure to light, air, and moisture, or by any other known bleaching agent, substantially as described.

2. The process of preparing Wax for bleaching,which consists in atomizing the same by a jet of steam or gas, substantially as and for the purpose specified.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two Witnesses, this 31st day of July,

' WILLIAM BRUENING.

Witnesses: r

H. W.- HELFER, A. FABER DU FAUR.

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