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Publication numberUS2240751 A
Publication typeGrant
Publication dateMay 6, 1941
Filing dateOct 20, 1938
Priority dateOct 20, 1938
Publication numberUS 2240751 A, US 2240751A, US-A-2240751, US2240751 A, US2240751A
InventorsBoesger George A
Original AssigneeW W Sly Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2240751 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

May 6, 1941. G. A. BoEsGER HELMET Filed oct. 2o, 1938 WQ, u NN`\ ON Q5 -I -l Il lk\ *N N" Om, O\

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INVENTOR. Geo/ye eJ/a/f n 4 61 J" d1 ATyTboRNEY Patented May 6, 1941 HELMET George A. Boesger, North Olmsted, Ohio, assignor to The W. W. Sly Manufacturing C'ompany, Cleveland, Ohio, a. corporation of Ohio Application October 20, 1938, Serial No. 236,366

(Cl. 12S- 143) 4 Claims.

This invention relates to a helmet for use in a polluted atmosphere and is more particularly directed to a helmet for use in an abrasive blasting room where the air is heavily loaded with finely divided abrasive and other impurities and where the dangers of silicosis are present.

Helmets for use by workmen under the above conditions are common, but insofar as applicant is aware, these helmets have been subject to several disadvantages, among which has been the heavy weight of the unit. The weight has been sufeient to require the operator to support the helmet on his shoulders.

to the sight opening has been small, movement of the wearers head would remove his eyes from the line of the sight opening and it was necessary that he move his entire body from the shoulders in order to turn the helmet. This resulted in excessive fatigue and discomfort to the wearer. In previous helmets the air-supply hose has been so connected to the helmet that any pull on the hose, due to the movements of the wearer, has been absorbed by the helmet proper and this has been uncomfortable and unsatisfactory 'I'he general object of this invention has been to devise a lightweight helmet which may be supported on top of the wearers head and which will turn on movement of the head to maintain the sight opening in alignment with the wearers eyes. An additional object of the invention has 4been to devise an inexpensive and light-weight head gear for the purposes set out. A further object of this invention has been to provide means for securing the air supply hose to the wearers body in such manner that any pull on the hose due to movements of the wearer is absorbed by a body connection rather than by a pull on the head gear.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawing and the following description setting forth in detail certain structure embodying the invention, such disclosed structure constituting however, but one of various means in which the principle of the invention may be used.

In said annexed drawing- Fig. 1 is a front elevation of my improved helmet; and Fig. 2 is a side elevation with the upper portion shown in section.

Referring now to' Fig. 1, the helmet in general comprises a head fitting envelope I merging with a pair of skirt portions I2 and I4, which lie over the upper chest and back regions of the Since the area devoted wearer and each of which merges with a shoulder portion I5 bridging the two skirts. These various portions of the unit are formed of a single sheet of soft flexible seamless rubber, shaped by the anode process. If the rubber sheeting should become damaged it may be patched like an automobile inner tube.

To secure the helmet in place on the body of the wearer, four straps I6 are secured to reinforcing padsy I'I cemented or vulcanized onto the helmet proper. A buckle I8 permits adjustment of each strap with respect to its pad to accommodate workmen of different size. A snap I9 at 'the end of each strap engages a respective aluminum belt ring 20, which rings are secured to the belt 22 provided with the conventional buckle.

A partial outlet seal between the helmet skirts and the wearers body is provided by a thick sponge rubber strip 24, secured as shown in Figs. 1 and 2, around the entire exposed edge of the skirts and shoulder portion. This sponge rubber seal is held fairly closely against the wearers body by the belt device above described, and provides approximately only suiicient opening to permit the egress of air from the helmet, thus preventing penetration of the polluted air outside the helmet up into position where it may be breathed by the workman.

A sight window is formed in the front portion of the helmet and comprises a cast frame 26 on the exterior side of the sight window and a sheet metal frame 2l on the inside. Bolts pass through the two metal portions secure between them the `adjacent edges of the yrubber strip. 'Ihe sight window is closed by a sheet 28 of non-shattering glass, which is covered on the exterior face thereof with a strong, sharply curved reecting screen 29. A sealing ring 30, between the glass and the helmet body prevents leakage of air at this point.

The head of the wearer supports the weight of the helmet and to this end I provide an aluminum head-piece 32, roughly shaped to conform to the top of the wearers head. On .the lower face of the head-piece is a rubber cushion 33 and at the outer edge of the cushion is an encircling sponge rubber ring 34. The head-piece threadingly receives a screw 35, which is carried in the air supply casting hereafter described. By turning the headpiece up or down on the screw and locking the same in position with a suitable lock nut a further adjustment is provided for workmen of diierent sizes.

An aluminum dome is placed in the inner top portion of the helmet, as indicated at 3l. This helmet supplies protection to the workmen from objects which may fall on his head, due to the conditions under which he works, and at the same time provides a support for a libre head band to hold the helmet in place. This head band consists of a libre ring 40 which is cemented to the aluminum `dome at the rear portion thereof and is secured to the forward portion of the dome by the headed pin 42, permitting the band to move with respect to the dome and adjust itself yto the shape of the wearers head. The forward portion of the band lies against the wearers forehead and cooperates with a downwardly depending rear portion 44 lying against the back of the wearers head to keep the headgear from slipping sidewise during use. It will be 4apparent from the description that when the head band and head-piece are adjusted and the helmet is put on by the wearer the same will be held in such manner that the helmet will turn when the head is turned. Since the helmet; is extremely light the entire Weight, even when carried by the head for a relatively long period, is not uncomfortable.

An air supply elbow casting, indicated 5S, is secured over an opening at the top of the helmet and domerby screws 5|. A rubber sealing ring prevents leakage of air at this connection. A Icentral opening 52 in the elbow casting connects with a threaded connection '54 .which receives the nipple 55 of the air supply hose 5l. The interior of the opening 52 is shaped Yto provide an expansion chamber for the air as it leaves the hose until just before it is discharged into the helmet, at which time the diameter of the opening is again restricted. This Y expansion chamber aids in cooling the air supplied to the wearer and is important because a decrease in air temperature of only a iew degrees provides a vast increase in comfort to the wearer, A hook 58 is provided in the elbowcasting to allow the unit'to be hung up when not in use.

Pull on the hose, due to movement of the wearer, is absorbed by the body belt 22 rather than bythe elbow connection. To this end, a

Yclamp E0 is secured to the back of the belt and the hose passed therethrough. A coil spring 62 Ysurrounds the hose at this point and lies be- Vtween it and the clamp. In practice the spring the same time', when the hose is straightened it may be pulled through the spring to cooperate with the straps f6 in adjusting the unit to the size of the wearers body.

From the foregoing description it will be apparent that I have provided an improved and very light-weight helmet for the uses set out, which may be easily carried on the wearers head and turns with the head and prevents uncomfortable pull of the air supply hose on the helmet.

Othermodes of applying the principle of my invention may be employed instead of the one explained, ychange being made as regards the structure herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

' I therefore particularly point out and distinctly claim as my invention:

1. A light-weight helmet consisting of a layer of soft, non-reinforced rubber of insuiicient thickness to support the Weight of said helmet and including an apron portion shaped to t theV shoulders of the wearer, and a relatively thick strip of sponge rubber secured to said apron portion adjacent the edge of the latter, and adapted to form a partial seal between said helmet and the body of the wearer.

2. in a helmet, an air supply fitting carried by said helmet inv communication with the helmet interior, an air supply hose carried by said fitting, a belt carried by said helmet adapted to encircle a portion of the wearers body, a clamp carried by Ysaid belt, said hose passing through said clamp, and a coil spring encircling said hose and interposed between said hose and clamp.

3. In a helmet, an air supply fitting carried by said helmet in communication with the helmet interior, an air supply hose carried by said fitting, a belt carried by saidhelmet adapted to encircle a portion-of the wearers body, a collar rcarried Aby said belt, said hose passing through said collar, and means interposed between said collar and hose adapted to restrain movement of said hose through said collar when the hose is bent at a point adjacent said collar.

4. A helmet formed to provide a covering for the headof the wearer and a front and back portion to cover the shoulders, an air-supply fitting secured centrally to the top of said helmet,

va head pad supported by said tting and disposed in said helmet in a position to lie on the head oi the wearer, and means for adjusting said pad vertically relatively to said fitting.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2699775 *Jun 6, 1950Jan 18, 1955Misto 2 Gen Equipment CoOxygen tent for hospital bed patients
US3078845 *Mar 24, 1961Feb 26, 1963Wilbur F KohlmeyerPortable dust eliminator
US4172294 *Sep 21, 1978Oct 30, 1979Harris Leon JProtective all-purpose helmet
US4466432 *Sep 16, 1981Aug 21, 1984Mine Safety Appliances Co.Air supplying hood
US6792623 *Dec 12, 2002Sep 21, 2004Starmed S.P.A.Helmet for artificial respiration without the aid of masks
US20030135915 *Dec 12, 2002Jul 24, 2003Starmed S.P.A.Helmet for artificial respiration without the aid of masks
U.S. Classification128/201.23
International ClassificationA62B18/04, A62B18/00
Cooperative ClassificationA62B18/04
European ClassificationA62B18/04