US423683A - Edward hart - Google Patents

Description

(No Model.)

3. HART. ACID BOTTLE.

Pate1 1 tedMar. 18, 1890.

E WINE $58:

. INVENTOB: I am ATTORNEYS.

N. PEI'ERS, Pholomwgnplmr. wuhinm. 0. cu

UN TED STATES PATENT OFFICE.

EDWARD HART, or EASTON, PENNSYLVANIA, ASSIGNOR 'ro HIMSELF, JOHN TowNsEND BAKER, AND GEORGE PURSEGLOVE ADAMsoN', or

SAME PLACE.

- ACID-BOTTLE.

SPECIFICATION forming part of Letters Patent No.' 423,683, dated March 18, 1890.

Application filed August 26, 1889.

To all whom it may concern:

Be it known that I, EDWARD HART, of Easton,

in the county of Northampton and State of Pennsylvania, have invented a new and useful Improvement in Acid-Bottles, of which the followingisafull, clear, and exact description.

My invention relates to an improved acidbottle especially adapted for the storing and transportation of hydrofluoric acid in pure condition. This is done at present in leaden or in rubberbottles or other containing-ves:

sels made of the same materials.

It is well known that hydrofluoric'acid will destroy glass and will attack both lead and rubber-=slowly, it is true, but still rapidly enough to render the acid contained in such Vessels useless for analytical or.other purposes where perfectly pure acid is necessary.

wax, or mixtures of these substances.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar letters and figures of reference indicate corresponding parts in all the views. 4

Figure l is a central vertical section through a mold, illustrating the manner of producing the receptacle; and Fig. 2 is a transverse section through the mold and the receptacle contained therein. Fig. 3 is aside elevation of the bottle, partly in section, illustrating the position of the stopper when the bottle is in use; and Fig. 4 is a similar View illustrating the position of the stopper just prior to sealing the bottle for transportation.

Neither of the substances above set forthnamely, animal wax, paraffine, orceresine is attacked in the least by the acid in its pure condition; but animal wax is very expensive, and is preferably not used alone.

Serial No. 321,956. (No model.)

Paraffine is the cheapest; but in order to pre-' vent crystallization and consequent danger of leakage one or the other ofthe abovenamed substances should-be added thereto.

I prefer, however, to use c'ere'sine, as .it melts at a high temperature.

By experiment I have found that the best mode of constructing the vessel is that illustrated in Figs. 1 and 2, which consists in a mold constructed in two sections 1Q and 11, having an orifice at the top and a tapering stopper 12, adapted to fit the s'aidorifice. This mold may be made of plaster-of-paris, metal, or other approved substance, and the inside of the mold is shaped to the exterior of the bottle or receptacle to be cast. The molten material is poured into the mold through the orifice therein and the stopper12 is then fixed to place, whereupon the mold is rapidly shaken or a centrifugal motion is imparted thereto, whereby the heated liquid material is forced into contact with the interior surface of the mold at all points. This rotary 'or reciprocating motion is kept up until congelation takes place. The result :is a hollow casting 13, (illustrated in Figs. 3 and/l, for instance,) which may be made thick or thin at pleasure, according as more or less molten material is poured into the mold.

The stopper 1 L of the receptacle is preferably made of a like material with the body, and consists of abody a, adapted to fit loosely in the neck of the bottle, and an upper flange a, concaved upon the upper face, as illustrated at 15 in Figs. 3 and 4.

In Fig. 3 the body of the stopper is illustrated as inserted in the mouth of the bottle or receptacle, and is so'pl'aced when the receptacle is in use. p

WVhen the bottle of acid is to be transported or stored, the stopper is inverted, as shown in Fig. 4, whereupon the flange a of the stopper contacts With the upper surface of the receptacle around the mouth.

The stopper and the body of the receptacle sealed joint with the body. To open the bota wax body, of a reversible stopper also constructed of wax, substantially as shown and described. v

v 3. As an improved article of manufacture, an acid-bottle constructed of animal and mineral Wax, substantially as shown and described.

4. As an improved article of manufacture, an acid-bottle constructed of animal and mineral wax and provided with a stopper of the same material, as and for the purpose specified. I

5. In an acid-bottle, the combination, with a body constructed of animal and mineral Wax, of a reversible stopper of the same niaterial,. consisting of a body portion and a flange at one end of the same, substantially as and for the purpose'specified.

6. In an acid-bottle, the combination, with the body. constructed of animal and mineral wax, of a reversible stopper comprising a body portion and a flange integral with one end of the said body, having a concaved outerface, substantially as and for the purpose 7. As an improvedarticle of manufacture,

a stopper for an acid-bottle, the same being constructed of Wax and providedwith a pcripheral'flange, substantially as and for the purpose specified.

8. As an improved article ofmanufacture, a stopper for acid-bottles, constructed of animal and mineral wax, substantially as shown and described. v

EDWARD HART.

Witnesses:

GEO. L. EILENBERG, F. W. EDGAR.

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