US 1366437 A
Abstract available in
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Description (OCR text may contain errors)
0. F. WAGE'NHORST.
GAS 'MASK. wane/mo" min ocr'. 1,8
Patented Jan. 25, 1921.;
UNITED, STATES PATENT OFFICE.
OTTO F. WAGENHORST, 0F AKRON, OHIO.
Specification of Letters Patent.
Patented Jan. 25, 1921.
' Application filed October 18, 1918. Serial No. 258,753.
7 Ohio, have invented certain new and useful Improvements in Gas-Masks, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon. I
My invention relates to improvements in gas masks such as are used by soldiers in modern warfare to ward off the effects of poisonous gas attacks. It frequently happens that, with respect to some kinds of gas used, the attacks are prolonged a considerable period or that the gas projected lingers for an indefinite period in the atmosphere or even permeates the ground, so that the soldiers, for protection, must wear their masks for a long period of timethirty-six or forty-eight hours, or perhaps even longer. One of the ObJBCtS of my lnvention 18130 provide an improvement to the modern type of gas mask, whereby, without removal of the gas mask, the wearer may be supplied with nourishment or medlclnes or liquids of any ClBSCllPtlOIl' that are essential to rellef;
and, furthermore, by my improvement a wounded man may be supplied with necessarymedicine or liquid nourishment without such removal of the mask. 7
It also frequently happens that the canister which contains the filtering material through which the air is purified before being drawn into the mask, and which is carried by the wearer in a pocket or belt on the blouse. and attachedto the end of a corrugated tube leading into the mask, is defective or becomes punctured, in which event the functioning of the filtering material may cease and the effect of the gas mask is destroyed.
It is the object of my invention to provide a gas mask with an arrangement whereby the canister containing the filtering material may be removed and the pipe leading from the same shut off and a new canister supplied immediately; or, if desired, two canisters may be attached to the air inlet pipe, each under separate control so that a defective canister may be cut off and the perfect one used. The invention, therefore, consists in the matters hereinafter described and referred to in the appended claims.
In the accompanying drawings- Figure 1 is a front view of the ordinary gas mask, showing my invention applied thereto;
Fig. 2 is a sectional view, partly broken away, showing the connection of the feeding tube with the mask;
Fig. 3 is a front view of a different means for attaching the feeding tube.
The mask shown, except for the i1nprovements hereinafter described, is of the standard type now in use by the American Army, and is shown generally in the drawings at 1. It is provided with the usual aluminum die casting 2, having an outlet 8 through which air is expelled, this outlet being covered by a flutter valve 4, allowing the air to pass from the mask when exhausting the air from the lungs but which closes upon inhalation. The die casting 2 is provided with an air intake nipple 5 which is connected to a flexible rubber pipe 6. The pipe, as heretofore constructed, has attached to its lower end a canister containing filtering material to purify the air to be breathed. It often happens, as above stated, that the canister is defective or may become punctured and useless, in which event the filtering material would not perform its function or purify the air and the poisonous gas would .be inhaled into the lungs of the wearer of the mask. To obviate this a.
rubber pipe 6 is provided with a branch 7, to which another canister containing filteringmaterial may be applied as asubstitute for the other defective canister, or it may be that a canister may be attached to each of the pipe ends. The main pipe 6, below the connection of the branch pipe, is provided with a valve 8, and the branch pipe 7 is also provided with a valve 9, so that the air fed to the mask may be taken from either canister, as desired. This structure lessens to a considerable degree the liability of the wearer becoming gassed, as it is not likely that both canisters would become ineffective at the same time.
The die casting 2 is provided with a pipe connection having a nipple 10 on the outside and a nipple 11 on the inside. (onnected to the nipple on the inside is a short flexible rubber pipe 12 of a length so that the wearer can place it in his mouth, when desired, by pressure with his finger from the taining medicine or liquid food or water,
and, upon the opening of the valve, the wearer of the maskcan suck up the contents of the receptacle without removing the mask. When not using the feeding apparatus, the valve 13 is closed and the rubber connection or tube 14.- may be removed so that the attachment will in no way interfere with the wearer. This structure, as will be seen, allows the wearer to be fed or given medicine or water, without removing the mask, which is very essential as it often happens that the masks have to be worn continuously for hours. Even patients in hospitals have been compelled to wear them and it has heretofore been impossible to give nourishment or water to a patient when greatly in need of the same. 7
In the modification shown in Fig. 3 of the drawings, instead of having the connection through the die casting, the flexible art of the mask adjacent the die casting as a pipe connection cemented or other wise secured thereto. In this event, the pipe extends inwardly a short distance, so that the wearer of the mask may readily insert it in his mouth and on the outside, it is provided with a valve 15, to which may be connected the tube 14, and the operation would be the same as that in the preferred form.
VVhile I have shown the heretofore described structure, it will be understood that the same could be varied in many ways to accomplish the desired results without departing from my invention.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:
. 1. A gas mask having an air intake opening, a tube'connected thereto, a valve in said tube, a branch pipe connected to said tube intermediate the valve and mask, whereby independent canisters containing filtering material may be connected with saicltube, and a feeding tube attachment adjacent the intake opening and having an extension on the inside of the mask within easy reach of the mouth of the wearer.
2. The combination with a gas mask, of an air intake, of a feeding attachment adjacent said air intake for conveying food or nourishment to the wearer, and a nipple connected thereto on the inside of the mask.
3. The combination with a gas mask, of an air intake, of a feeding tube attachment adjacent said opening for conveying food or nourishment .to the wearer, a valve in said attachment, and a nipple connected thereto on the inside of'the mask.
l. The combination with a gas mask having the usual mouth die casting having an air intake, of a feeding tube attachment in said die casting having a nipple on the inside and a valve on the outside whereby food or nourishment may be conveyed to the wearer.
5. The combination with a gas mask having the usual mouth die casting having an air intake opening and outlet opening, of a feeding attachment in said die casting for conveying food or nourishment to the wearer, a nipple on the inside and a valve on the outside, and having means for attaching a tube.
6. The combination with a gas mask, of an air intake, of a feeding tubeattachment adjacent said opening for conveying food or nourishment to the wearer, a nipple connected thereto on the inside, and means for closing the same on the outside.
In testimony whereof I affix my signature in the presence of two witnesses.
OTTO F. WAGENHORST. Witnesses: v
C. R. YOUNG, W. A. HELPER