US531329A - Disinfecting apparatus - Google Patents

Description

(-No Model.) 'R. P. PIGTET.

. DISINFEGTING APPARATUS.

No. 531,329. Patented Dec. 25,1894.

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" "UNITED" STATES PATENT OFFICE.

RAOUL PIERRE PICTET, OF PARIS, FRANCE, ASSIGNOR TO THE SOGIETE ANONYME DE LINSTITUT RAOUL PICTET, OF FREYBURG, SWITZER- LAND.

DISINF ECT ING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 531,329, dated December 25, 1894.

I Application filed August 8, 18 94. ,Serial No. 519,733: (No model.)

To aZZ whom it may concern:

Be it known that I, RAouL PIERRE PIOTET, a citizen of Switzerland, but now residing at Paris, in the Republic of France, have invented certain new and useful Improvements in Apparatus for-Disinfecting, of which the following is a specification.

Hitherto three methods of disinfection have been employed by municipal councils, railway companies, doctors and surgeons for making aseptic the various organic substances vehicles of pathogenic microbes, and "they are, first, the use of steam; second, the use of sprays of toxic solutions in particular corroslve sublimate; and third, the use of gaseous fumigation, chlorine, sulphurous acid, nitrous vapors and the like. The above three methods are quite inefficient, because they have no effect on a large number of substances and articles. Moreover, their use is often dangerous.

Corn, all kinds of cereals and valuable fabrics cannot be placed in stores without deterioration. Hospital stores are greatlyinjured when placed in steam at 113.

The main object of my invention is to overcome the above mentioned objectionable features attending the employment of the hith erto practiced methods of disinfection.

My invention stated in general terms consists of apparatus for disinfecting hereinafter described and claimed.

My invention is carried into effect by such apparatus as is illustrated in side elevation in the accompanying drawing and in the following manner;

First. The articles to be disinfected are placed in a hermetically closed vessel capable of resisting atmospheric pressure.

Second. A vacuum is created in the vessel by means of an air pump, an exhauster or the like.

Third. The vapors of atoxic body, sulphurous acid or a mixture of sulphurous and carbonic acids, or chlorine, or the vapors of any known antiseptics, are introduced into the exhausted vessel.

Fourth. These vapors are left ,to react for a certain time on the bodies or articles to be disinfected.

Fifth. Thevapors are again exhausted from the vessel and led to a gaso meter of a capacity Sixth. Air is allowed to re-enter the vessel in which a vacuum has just been formed.

Seventh. The articles or substances are then taken out completely disinfected.

My invention is of quite general application and may be applied to all substances even to those refractory to disinfection, such as cereals, linens and silks.

Referring now particularly to the drawing A, is a chamber or vessel of any suitable dimensions formed of riveted or soldered sheet iron, which may be of sufficient size to contain mattresses, linen, bales of rags, sacks of cereals, hospital-linen, and other articles and if necessary even a complete carriage. The

said chamber is of cylindrical form with a movable end or door a, which is hermetically closed and capable of resisting atmospheric pressure. It is supported on masonry B, or in any other preferred manner.

The internal capacity of the chamber may Vary between a fraction of a cubic meter to two hundred and fifty cubic meters corresponding. to stoves susceptible of holding complete carriages.

G, is an air pump capable of producing a very perfect vacuum. The more perfect the working of this pump both as to delivery and vacuum the better the operation of disinfection succeeds. I

D, is a gasometer of any type and material provided its capacity be equal to or greater than that of the vessel A.

It is preferable to use an oil gasometer such as shown in thedrawing;

The bell E, is immersed in an oil bath contained-between two concentric cylinders e and e, which are separated from each other by a thin layer of oil. The centralcylinder c,

shownin dots is closedat: the top byan airtight cover which supports the pi er, through which the gas of the gasometer enters and leaves. This gasometer may accordingtoits. The oil formingthe size be of any shape.

- 'bathmay be mineral or organic and should resistas much aspossible the action of acids. F, is a pipe connecting the chamber A, iwith the pump 0. G, is an outletfrom II, is a pipe connecting the pipe F, with the pipe F.

71,,f,f, g andgflare valves in the various pipes.

I, is the driving pulley of the pump C. K, is a masonry for the pump. L,is a counterweight for controlling the gasometer hell.

M, is a fiy-wheel. The operation of the apparatus hereinbeforedeserihed is as follows: The articlesto be disinfected are placed in the chamber A,

1 whichis thereupon closed. The valves g and g are opened and the other valves h,f and f 1 closed. The pump is put into action, until there is only a very small quantity of air in thevessel A, and after stopping the'same,-thevalve g, is closed and the valves f and h,are

opened. I The gases pass from the gasometer through the pipes F, H and F and enterthe vessel or chamber A, where they attain atmospheric' pressure. At the end of one, two

or more hours, as required the pump 0, is

again put into action after having opened the valve/f audclosed thevalvesf and h. The

valve 9, which already is closed is allowed to the pneumatic pump. 1

remain so and the valve 9 is permitted to re main open. The gases exhausted by thepump are conducted from thechamber A, and are forced back into the gasometer D. NVhe'nthe vacuum. has become as perfect as before, the

pump is stopped and atmospheric air allowed to again enter the vessel A, after having closed the valve 9'. The vessel A, is then opened and the articles willbe foundto be aseptic and perfectly disinfected and are removed. By leaving the valves closed, the gas contained in the gasometer is always ready g for use for a fresh operation. Having thus described. the nature and objects of my invention, whatl claim as new,

and desire to secure by Letters Patent, is-

The combination, in an apparatus for disinfecting, of a cylindrical vessel provided with a door in one end arranged to resist atmospheric pressure, an air pump or exhauster connected with said vesselfor creatinga vac- .uum and to permit of antisepticsbeing introduced therein to re-acton articles. or. bodies to be disinfected in said vessel, means for act utingsaid pump or exhauster, a gasometer having an oil seal,-pipes having stop-cocks connecting said vessel with said gasometer andpump and an outlet pipe from said pump having a stop-cock,; substantially as shown and described.

1 In testimony whereof I affix my signatu re in presence of two witnesses.

, g g RAOUL PIERRE PICTET.

Witnesses:

EDWARD P. MACLEAN, G. DE MESTRAL.

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