US1872877A - Sand-blaster's helmet - Google Patents

Description

Aug. 23, 1932. F. M. BOWERS 2,

SAND BLASTER'S HELMET Filed Oct. 13, 1928 gwuemko'o fill/492M171 Baum;

Patented Aug.j23, 1932 V PATENroFF QE j rnnnnmox M. IBOWERS, or oHEs'i'nR, rn-nNsY vANIn" SAND-BLASTERS HELMET Application filed October 13, 1928. Serial No. 312,232; 1

This invention relates to head gears and more particularly to a sand blast protection helmet.

One of the objects of the invention is to 5, provide a helmet including a cup-shaped'fibre head-piece having a relatively deep rigidly depending head-encircling flange formed of the same material, and provided with protected ventilating and sight apertures, and 10 a tubular canvas extension secured to the lower edge of the flange and extending to the shoulders of the wearer for protecting the wearer against the sand used for blasting purposes. 5 Another object is to provide such a helmet with improved means for securing a screen or mesh plate in the sight apertures, such means permitting the use also of celluloid at,

these places. A further object is to furnish ,2? a helmet of the above mentioned type, in

which the canvas extension is held spread by the rigid flange, soas to give a relatively large air space all around the head of the user.

A still further object is to provide a sand blast helmet having means for introducing compressed air into the same, and for discharging said air into the top of the helmet in such manner that it will flow forwardly and outwardly between the face of the wearer and the sight apertures. In using a sand blast, usually under cover, there would be an inflow into the helmet of dust and sand particles unless this compressed air inlet somewhat increased the pressure inside the helmet.

With the foregoing objects outlined and with other objects in view which will appear as the description proceeds, the invention consists in the novel features herein after described in detail, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims.

Referring to the drawing,

Fig. 1 is a transverse vertical sectionalview of the improved helmet.

Fig. 2 is a partial longitudinal Vertical sectional view of the same.

Fig. 3 is a front elevation of the helmet.

In the drawing, 1 designates the cupshaped top of the helmet which is preferably 1 made of some substantially rigid relatively also protect. his eyes from dust, sand or the tion of the same.

metal20, rive-ted to the] rear piece,'as shown light material, such as fibre-board. A flange i 2 formed of-the same materiahdepends from the top, and the'upper edge .of the flange is preferably secured in a substantially air-tight manner to the outeredge of thetop, by means 55 ofan angular ring 3, also preferably formed of fibre-.board,,and connectedto; both the top and flange by suitable fastening devices, such asrivetst. I H The flange is cut out at its front portion to 60 providesight apertures 5, which may :becovered by windows 6 formed-ofwire mesh,;celluloid or -both, andthese windows are held in place by a frame 7, located within. the helmet and held against the edges of the win- =06 dows by some suitable fastening devices such as bolts and nuts 8. These -windowsypermit the operatorto see throughthe-helmet, and

like; V

Ventilating ports 9 are arranged at the rear portion of the flange, and arezcovered-by wire gauze 10, preferably secured in position by rivetsl'l. j It will be noted that the lower edge ofithe flange is cut on a-bias, so that the front edge extends downwardly to a greater extent than the rear edge, and this bias edge is secured by rivets 12 or the like, to a tubular canvas shoulder piece or protector '13, which prefer.- a bly'has its upper end folded around aring 14:, in order that the rivets and ring may make a "substantially 'dust tight joint where the canva-sand fibre flange are'connected. v

A fibre strip 15 extends transversely across the interior of the helmet, in arc-shaped manner, and hasits ends bent back upon the main portion of they strip, and secured. to the fiange by rivetsilti. Rivets 17 connect the looped ends of the strip to the main por 9" This strip supports a front horizontally" disposed strip 17 which is riveted at 18-.to the cross strip, and forms the front member of a head band The rear portion of'this head band is formed by a similar horizontal- 1y disposed strip. '19, whichis also riveted to the cross piece, as shown, andthis rear piece is provided-with angular strips of resilient at 21, and bearing upon the free rear ends 22 of the front piece. This provides a headpiece or band similar to that shown in my Reissuecl Patent No. 16,515 of Jan. 4, 1927 that is automatically adjustable to accommodate different sized heads; it being un derstood that when the head is inserted in the front piece, therear ends of the latter expand against the metal strips.

For the purpose of ventilating the helmet and forcing any dust. or'the like out of the same, a compressed air pipe 23 is led into the helmet through the rear portion of the flange 2, and extends along the inner surface of the top, as shownat 24, and the forward'end 25 of'this pipe may be flared and der extension attachable to said rim, havin a folded-over top edge extending into sai flange, a securing ring fitted to said inner flange diameter and engageablein said extension fold, and securing rivets attaching said ring to said flange rim; said helmet having a top compressed air inlet, and said extension forming a substantially air-tight junction with said depending flange.

In testimony whereof I aflix my signature.

FREDERICK BOWERS.

I secured to the top at about the center of the p n latter, so that the air entering through this pipe and under pressure, has a tendency to flow forwardly and downwardly between the face of the-user, and the sight openings, and p 7 forta'ble' and tend to eject any dust or sand which would otherwise'enterthe helmet;

.in the claims} -What' is claimed and desired to be se- In View of the above, it is believed that the construction, use and advantages of the invention may be readily understood, and it is apparent that changes may be made in the construction disclosed, without departing from the spirit of the invention, as expressed V cured byLetters 'Patent is: c 1. A sand blasters protection helmetcomprising a rigi'diibre cup-shaped top piece with a deep rigidly depending head-encircling flange having a tubular canvas shoulder' extension attached t0 'its bottom edge,

protected front sight openings in, said depending flange, diametrically opposite rear ventilating openings formed ofa plurality of closelyspaced apertures protected by a common screen, and a compressed air-inlet tube to said helmet terminating within the highportion of said cup-shaped top piece and opening forwardly, where said compressed air -will be directed downwardly from said top past said sight apertures and escape rearwardly through said rear flange ventilator openings.

2.- Asand blasters protectionhelmet comprising a rigid 'fibre cup-shaped top piece with a deep rigidly'depending head-encir-' cling flange having diametrally opposite' sight and ventilator openings and an open annularbottom rim, a tubular canvas shoul

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