US 296499 A
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A. 'SNIBWsKL PROTECTIVE HEAD COVERING 0R H001).
No. 296.499. Patented Apr. 8, 1884.1
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NlTED STATES ANTON \VISNIEVVSKT, OF NEVV YORK, N. Y.
PROTECTIVE HEAD-COVERlNG OR HOOD.
, SPECIFICATION forming part of Letters Patent No. 296,499, dated April 8, 1884.-
To aZZ whom it may concern:
Be it known that I, Arron WIsNInwsKI, of the city, county, and State of NewYork, have invented certain new and useful Improvements in Protective Head-Coverings or Hoods, of which the following is a specification.
This invention has reference to an improved protective head-covering or hood for workmen employed in chemical factories, firemen, and others who are compelled to enter and work in spaces 'fillcd with deleterious gases or floating particles. I
In the accompanying drawings, Figure 1 represents a vertical longitudinal section of my improved protective head-covering or hood shown in position for use. Fig. 2 'is a front view of the same. Fig. 3 is a detail view of the interior month-plate or shield, and Fig. 4. is a detail vertical longitudinal section of the valve of the air-eduction pipe of the hood.
$imilar letters of reference indicate corresponding parts.
A in the drawings represents a protective head-covering or hood, which is preferably made of rubber or other suitable elastic material that is impervious to air. The hood Ais stiffened by an interior wire frame, a, of the size and contour of the head. To the lower part or neck portion, A, of the hood is applied a flexible collar, B, that is placed below the collar and upper part of the coat. The coat is then buttoned at the front, so that the collar B is tightly pressed on the shoulders and chest, so as to exclude air and gases. At the front of the hood A are arranged eye-openings I) Z), which are closed by glasses. Below the eyes is arranged, at the interior of the hood, a flexible mouth-plate or shield, G, that fits easily over the mouth and nose without exerting an undue pressure on the same. The plate 0 is connected with valved airinduction and eduction tubes D D, of rubber, of which the former has an inwardly, the latter an outwardly, opening valve (1, that is made of a sleeve, (2, having an interior shoulder or seat, d and a spring-pressed valve-disk, d, which is pressed against the seat (1 by its spiral spring. The valve shown in Fig. 4 represents the outwardly-opening valve of the air-eduction tube D, the valve of the air-induction tube D opening inwardly by, arranging the spring pressed valvedisk (2* at the opposite side of the shoulder d In place of the valve shown, any other approved valve construction may be used for the air-tubes D D. The air-tubes D D pass upward at both sides of the eyes and over the crown of the hood to the back of the same, where the inductionpipe D has afunnel-shaped terminal, D which is screened and filled with sponge or other porous material. This porous material is soaked with chemical solutions by which the deleterious gases or fumes against which protection is desired are neutralized. Purified atmospheric air is thereby drawn in through the tube D and its inwardly-opening valve, while the vitiated air from the lungs is forced through the outwardly-opening valve of the tube 1), and the latter to the outside.
By arranging the tubes D D at the front, top, and back of the hood A, they are entirely out of the way, and are not dangling about in front, as in firemens head-coverings heretofore in use.
By the use of the protective hood the worlc men may move about and work in an atmosphere of poisonous gases or pass through dense smoke without any bodily injury resulting therefrom.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A protective head-covering consisting of a hood provided with glass-covered eye-openings, aninterior mouthpiece, an induction airtube connected with said mouth-piece, a valve within said induction air-tube adapted to antomatically open inwardly for the'admission of air, and an eduction air-tube, also connected to said mouth-piece, provided with a valve adapted to open outward automatically for the discharge of air, substantially as described.
2. A protective head-covering consisting of a hood provided with glass-covered eye-openings, a mouth-piece below said openings, an induction air-tube connected with said mouthpiece, having a funnel-shaped terminal providedwithfilteringmaterial,anautomaticinlet valve within said tube,'a-nd an eduction-tube, also connected to said mouth-piece, and provided with an automatic valve adapted to open outwardly, said tubes being passed up over the top of said hood, which latter is provided with means for retaining the tubes in place, substantially as described.
3. A protective head-covering comprising a hood provided with glass-covered eye-openings, an induction air-tube opening opposite the mouth of said hood, provided with an automaticin1et-va1ve,'and an eduction air-tube, also connected to said hood opp osite the mouth, and provided with an automatic outlet-valve, said tubes being passed up over the top of said hood, which latter is provided with means for retaining the tubes in place, substantially IO as described.
In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.
Witnesses PAUL GoEPEL, SIDNEY MANN.