US 2011733 A
Description (OCR text may contain errors)
Aug. 20, 1935.-
H. F. SHINDEL FACE CONFORMING RESPIRATOR MASK Filed Sept. 20, 1934 Harr F EfIz'AdEL.
INVENTOR ATTORNEYS Patented Aug. 20, 1935 v UNITED STATES PATENT OFF ICE FACE-CONFORMING RESPIRATOR MASK Harry F. Shindel, Reading, Pa., assignor to Willson Products, Inc., Reading, Pa., a corporation of Pennsylvania Application September 20, 1934, Serial No. 744,813
3 Claims. (01. 128146) Myinvention relatestorespirators havingfaceviding a large depending loop I substantially fitting masks provided with means for insuring conformed to the enlarged mouth-enclosing pora filtered-air supply to the user; and it consists tion 22 of the mask, so that the opposed ends particularly in improved clipping means for con- II, II, may be spread more or less as required 5 forming the mask to the face of the wearer so without materially varying the nose-engaging 5 as to most satisfactorily secure the same with pressure exerted thereby and without danger of reduction of the dead-air space in the mask and overstraining the loop material so as to effect without interference with nasal breathing: The any change in its normal shape. To permit the invention is fully set forth in connection with employment of such a large loop construction I the accompanyin drawing and is specifically shape the same so that it will extend around the 10 defined in the subjoined claims. mouth-enclosing portion 22 of the mask prefer- The type of respirator to which my invention ably in loosely retained exterior position thereparticularly relates, and the general purpose of on as indicated, so as to permit of only a limited my present improvement, is indicated in prior spreading of said mouth-enclosing portion when Patent No. 1,317,947 issued October 7, 1919 and the mask is applied tothe face. 15 later assigned to the predecessor of my present I The en agement of the opposed end portions assignee. I I, ll of the loop with the collapsible nose-en- .1 is aside elevation indicating a e pirator closing portion of the mask may be convemask of well known construction having my imniently effected by forming the nose-enclosing v 0 proved clip device app i d thereto in p e e wall with clip-engaging means, as indicated by 20 1119-1111812, the molded projections 2|, in which they may be Fig. 2 is a, front elevation of same, with a readily secured. As shown, these engaged ends portion of e filter-Supporting mouth-enclosing I I, I l are bent outwardly so as to extend beyond por on broken aw o as to fully Show one d the projections 2| and provide contact with the of the c with s attached nose-enclosing opposite sides of the nose substantially con- 25 w l of t mask pr ss d th y s as to forming with the swelled side portions of the nayieldingly u e nose When in sal bone of the user, whereby collapsing of the 3 is p e P p v View Of my nasal passages is avoided; and a moderate and improved device indicating the formation thereof umform pressure is insured adapted to satiss e e n r Sp fi y describedfactorily secure the properly collapsed mask. 30
4 indi ates a m d ed construction in It will be readily understood that the enlarged which the device is applied to the interior of loop 3 of my improved d ic may extend he mouth-enclosing Portion the .mask, around the mouth-enclosing porton 22 of the stead of exteriorly thereof; a partial cross-section mask, interiorly of t latter instead of exteriorof the latter on the line 55 being Shown in 1y thereof, as indicated in the modified applica- 35 5. tion shown in Fig. 4; in which arrangement it I a found from actual experience with may be set into a receiving groove formed in the ice conditions, that the most satisfactory attainwan of the mask, t t upper ends of th ment of desired results from clipping the coldevice t t lightly push the nose-enclosing 40 flp le po of the mask to h nose cans mask wall against the nasal-bone structure with- 40 f r the insuring of only. a moderate clipping out interfering with free nasal breathing. pressure notwithstanding varyin Sizes and 0011- hat I claim is: tour of the latter, and that such pressure be The combination t a respirator mask app d against the Sides of h nasal bone struc' formed of flexible molded material and compristure so as to clear the nostril pa sages and fi ly ing an air-connecting mouth-enclosing portion, 45 ld the conformed mask Without tin andalaterally collapsiblenose-enclosingwallhavnasal breathing ofv the user. ing clip-engaging means, of means adapted to In order to secure the Practically important conformingly collapse said nose-enclosing wall results, it is. Primarily essential that the P- and resist spread of said mouth-enclosing portion P d nose-Pressing ends ll f the Sp g-Clip comprising, a spring wire having its ends en- 5Q 1001) besubstantially spread bl may be gaged in said clip-engaging means and a con-' variously requ Without materially va y the necting loop depending around and engaging gripping pressure exerted in actual use upon the opposite sides of said mouth-enclosing portion. collapsible nose-enclosing portion 20 0f the m sk. 2. The combination with a respirator mask .55 This is most satisfactorily p ished by p oformed of flexible molded material and compris- 55.
ing an air-connecting mouth-enclosing portion, and a laterally collapsible nose-enclosing wall having clip-engaging means, of I means adapted .to resist spread of said mouth-enclosing portion and conformingly collapse said nose-enclosing wall comprising, a loop of spring wire depending around the outer wall at a distance spaced from the face-contacting edge of the latter and engaging opposite sides of said mouth enclosing portion, said wire loop having angularly bent clip-engaging ends extending substantially crosswise of said nose wall so as to reversely press the latter against the side swellings of an enclosed nasal bone.
3. The combination with a. respirator mask formed of flexible molded material and comprising an air-connecting mouth-enclosing portion, and a laterally collapsible,nose-enclosing wall having interior clip-engaging means, of means adapted to resist spread of said mouth-enclosing portion and conformingly collapse said noseenclosing wall comprising, a loop of spring wire depending around the inner wall at a. distance spaced from the face-contacting edge of the latter and engaging opposite inner sides of said mouth-enclosing portion, said wire loop having angularly-bent clip-engaging ends extending substantially cross-wise of ,said nose wall so as to reversely press the latter against the side swellings of an enclosed nasal bone.
HARRY F. SHINDEL.