US1991938A - Volatile fumigant package - Google Patents

Description

Feb. 19, 1935. W, HOUGHTQN 1,991,938

l VOLATI'LE FUMIGANT PACKAGE Original Filed April 5, 1926 mun/ifo 1,

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Patented Feb. 19, 11935V4 VOLATILE FUMIGANT PACKAGE Harry W. Houghton, Glen Echo, Md., assignor to` Safety Fumigant Company, a corporation of Massachusetts Application April 5, 1926, serial No. 99,955 Renewed September 23, 1932 Claims.

This invention relates to means for distributing gaseous or volatile substances, particularly such as are of a poisonous nature, intended for use Vas fumigants, insecticides, germicides, etc.,

5 commonly containing hydrocyanic acid gas or other cyanogen compounds in gaseous or liquid form. The invention aims to provide a safe and inexpensive package of convenient size for ordinary domestic use, and which may be transported and sold without special precautions against accident. K

Further objects of the invention appear in connection with the following description of the illustrative embodiment thereof shown in the accompanying drawing, wherein Fig. 1 is a longitudinal section of the device showing it lled with a liquid fumigant;

Fig. 2 is a side View; and

Fig. 3 is an end view thereof.

The device selected for purposes of illustration and shown in the drawing comprises an inner glass tube or receptacle 11, which contains the fumigant and is shown as hermetically sealed at its ends, and which is provided with a middle constriction 12 that may readily be fractured to permit the fumigant contents 13 to escape; but the container may be made of any suitable materials and constructed in various ways for preventing leakage or accidental escape of the gaseous contents whilepermitting liberation of thevv gas at will.

In the form of device illustrated, which is particularly adapted for domestic use against household vermin, moths, insects and disease germs, the fumigant is preferably a gaseous combine containing hydrocyanic acid and cyanogen chloride or the like (such as is described in my Patent No. 1,521,537, dated December 30, 1924) absorbed in a volatile liquid, or mixture of liquids, such water, so as to constitute therewith an acid nitrile; but the invention is not restricted to these particular gases and materials, as it is evident that the principle applies to packaging any gas emitting substances or gas that can be handled only with difiiculty or danger.

Referring to the drawing the glass tube or container l1 is surrounded with a diffusing and Va porizing medium or element 14, shown as absorbent cotton, or other material permeable to gas and interposing a substantial resistance to the free flowing away of the liquid'contents when the container is broken open. The permeable material 14 may be wrapped with'a few layers of 55 gauze bandage 15, or other suitable material for as carbon tetrachloride, acetone, or glyeerine andV holding it in close contact with the tube; and a varnished or treated fabric or glazed paper cover 16, or other moisture-proof material, is tightly YWrapped around the outside. The ends of the wrapper 16 may conveniently be held by eyelets 17, having perforated centers to permit gas to escape from Within the package.

The manner of use of the device is extremely simple. Assuming the tube to be filled with a Suitable fumigant in solution, the neck 12` of the l0 tube is fractured by a smart blow, and the liquid seeps out into the diffusing absorbent material, where it volatilizes in due course, the gas or vapor finding its way out through the ends of the package or wherever the perforated eyelets 17 l5 or equivalent means are located. The length ot time required for the gas to find its Way out is suiiicient to permit the user to leave the vicinity in advance of the escape of the fumes.

The device may be constructed in graduated 20 sizes, the inner container l1 having such capacity as to suit the space to be fumigated and'strength of gas per cubic foot best adapted to accomplish the purpose desired.

The term diffusing element as herein em- 25 ployed .is intended to embrace any mediumV that is adapted and arranged to receive and act upon the contents as it issues from the container and prepare it for liberation of the gas gradually or assist in the gradual liberation of the gas. 80

The invention is not restricted to the form of device shown and described, but what I claim is:

1. A fumigant package comprising a glass tube having its middle of reduced cross-section and filled with a gasabsorbent material, an absorbent packing surrounding and protecting said receptacle, and a cover permitting slow escape of gas.

2. A fumigant package comprising a breakable receptacle for a gas absorbent material, an absorbent packing surrounding and protecting said l0 receptacle, and a wrapping of Water-proof ilexible material having aperture means permitting slow escape ofV gas.

3. A fumigant package comprising a receptacle 11 having a portion 12 adapted to be broken open, 45 and containing a gas absorbent filling 13, and diffusing material 14 surrounding said portion 12 and enclosed in a wrapper 16 provided with gas escape openings 17.

4. A fumigant gas liberating device consisting of a container having a breakable portion, a body of liquid of a character to give off fumigant gas within said container, and a covering surrounding said container comprising a diiusing medium permeable 'to gas and arranged to receive said 55 liquid mixture comprising carbon tetrachloride and acetone having hydrocyanic acid and cyanogen chloride in the form of a gaseous combine absorbed therein whereby a gaseous Iumigant is evolved upon exposure of said liquid to the atmosphere. Y

HARRY W. HoUGHToN.

5. A sealed package containing a slowly volatile

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