US 2303073 A
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Description (OCR text may contain errors)
Nov. 24, 1942. J. RBROWN 2,303,073
DEODORIZING SHEET`OIR PA-D *Filed No. 2, 193s;`
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A ttoxjzeys ffy? Patented Nov. 24, 1942 UNITED STATES PATENT OFFICE DEODORIZING SHEET R PAD J Russell Brown, Grangeville, Idaho Application November 2, 1939, Serial No. 302,623
My invention relates to improvements in mean for deodorizing closed or substantially closed spaces, and particularly to sheets or pads having the capacity of deodorizing air and gases in such confined spaces as well as resisting nre, and an important object of my invention is to provide simple and adaptable deodorizing means of this character.
Other important objects and advantages of my invention will be apparent from a reading of the following description and the drawing wherein preferred embodiments of my invention are set forth.
In the drawing:
Figure 1 is a perspective view of a sheet or pad in accordance with the present invention which involves a relatively non-absorbent ply on one side thereof.
Figure 2 is a fragmentary transverse vertical sectional view taken through Figure 1.
Figure 3 is a similar view taken through a sheet or pad devoid of the relatively non-absorbent ply.
Referring in detail to the drawing the numeral 5 generally designates the preferred form of the invention, comprising a pad or relatively thick sheet 6 of highly absorbent fibrous material, such as absorbent paper, blotting paper or other paper-like material of a thickness ranging between .0 and .040 of an inch. To one side of the element 5 is secured a relatively nonabsorbent ply 'l of vegetable parchment by means of a layer 8 of water resistant cement, the ply 'l being of the same size as the element 6 and designed to rest on the bottom or other terminal surface of a partly closed space so as to insulate the element'l 6 therefrom and prevent the element 6 from sticking to the surface as well as Contact with such surface of the impregnating material.
In the form of the invention shown in Figure 3 this protective element 8 is not present, the pad or sheet 5a being designed for use particularly on the walls and other surfaces of the space to be deodorized or on the iioor or bottom of a substantially completely closed space, such as enclosed ashtrays and smoking stands,
Both forms of the invention illustrated carry an absorption or impregnation of some one of the saturated solutions described below amounting approximately to three (3) cubic centimeters of solution to each twelve and one-half (121/2) square inches of exposed surface of the elements 6 and 6a respectively.
Solutions for impregnating the pads or sheets comprise carbon tetrachloride, chloroform, orsolutions made by mixing paradichlorbenzene with a solvent such as etherbenzol, chloroform or carbon tetrachloride, the last two being preferred on account of their less inflammable character.
Typical examples of saturated solutions for impregnating the described pads, and also the protective' parchment-like ply 1, composed of the mentioned paradichlorbenzene and the solvents mentioned, are as follows:
Paradichlorbenzene grams 1.67 Solvent c. c.-- 1.67
Although I have shown and described herein preferred embodiments of my invention, it is to be understood that I do not limit the application of the invention thereto, except as may be required by the scope of the subjoined claims.
What is claimed is:
V1. A device for deodorizing a confined space, said deviceconsisting of a pad comprising a paper-thin absorbent sheetof fibrous material impregnated with a deodorizing solution such as paradichlorbenzene, the impregnation being effective to deodorize the air within said space, a paper-thin non-absorbent parchment backing sheet, said non-absorbent sheet being coextensive with one side of said absorbent sheet, s
said backing sheet being arranged to engage the supporting surface upon which the device is mounted to prevent transfer of moisture between said surface and said absorbent sheet and a thin body of water-resistant cement securing said backing sheet to said absorbent sheet.
2. A device for deodorizing the air within a confined space, said device consisting of a pad for exposure in said space, said pad consisting of an imperforate paper-thin absorbent sheet of brous material impregnated with deodorizing substance, an imperforate paper-thin non-absorbent parchment backing sheet, said nonabsorbent backing sheet being coextensive with one side only of said absorbent sheet, said backing sheet being arranged to engage the supporting surface upon which the device is mounted to prevent transfer of moisture between said surface and said absorbent sheet and a thin layer of moisture resistantcement securing said sheets together.
J RUSSELL BROWN.