US1999639A - Protecting hood - Google Patents

Description

April! 36), 1935.

W. A. ROSENBERGER PROTECTING HOOD Filed July 21, 1935 3 Sheetls-Sheet l gamma bop Ml/z'am A. Rosenberyer 63 Ms /WM April 3@, 1935'. w A RO gNBERGER 1,999,639

PROTECT ING HOOD Filed July 21, 1933 5 Sheets-Sheet 2 M X/i002 A lZose/zberyer X/MQ W April 30, 1935. w. A. ROSENBERGER PROTECTING HOOD Filed July 21, 1933 5 Sheets-Sheet 5 Patented Apr. 30, 1935 UNITED STATES 1,999,639 PROTECTING HOOD William A. Rosenberger, Hagerstown, Md., as-

signor to Pangborn Corporation, Hagerstown, Md., a corporation of Maryland Application July 21, 1933, Serial No. 681,595

14 Claims.

This invention relates to devices of the type designed to be worn as a hood or helmet for protecting the upper part of the body, especially the head, against flying particles, noxious or annoying gases and the like.

More particularly, the present invention relates primarily to hoods suitable for use in sand blasting operations, although it will be perceived from the following disclosure that many of the principles and features of my invention may be readily incorporated in various types of helmets and other headgear.

A device of the character above mentioned, to possess real merit and be satisfactory in every important respect, must meet all or substantially all of the following requisites: It must afford complete protection against flying abrasive and dust particles, without elimination of an adequate supply of clean and fresh air to the wearer; it must be of light weight, without application of excessive pressure to the wearers head and without any structural features which would otherwise render the wearer uncomfortable; it must be universally adjustable so that it can be accurately and properly fitted to persons of various sizes and shapes, with these and any other adjustments capable of being conveniently made; it must be so designed that its visor or Window assembly will be properly disposed and will remain or be kept clean for clear vision during use; it must have a minimum of exposed metal parts, with no external sliding or threaded connections which may be damaged or rendered inoperative by flying abrasives; it must embody a flexible cover or hood that is easily removable and replaceable; and it must be capable of easy cleaning and sterilization.

Protecting devices of this general type have been proposed heretofore but they have been unsuccessful through lack of the desirable and necessary features enumerated above. It is, accordingly, the primary and general object of the present invention to devise protecting equipment which will meet all of the above requisites, as well as embody other desirable and advantageous features.

It is a major object of the present invention to devise a hood or head protector that is supported substantially entirely by the shoulders of the wearer, all pressure thus being taken off the head except for a light lateral pressure which preferably is utilized to position the hood properly. It is also an important object to provide a shoulder-supported hood with an outer cover which can be drawn downwardly below the arms and secured snugly around the body to substantially seal the head of the wearer from the outer atmosphere.

Another major object of this invention resides in the provision of a headgear having several convenient adjustments for comfort and for universality of use. Subordinate objects are to provide adjustment means for adapting a single device to heads of various sizes and shapes; to provide adjustment means adapting the device to comfortably fit different shoulders that are of various sizes and shapes and various distances from the tops of the heads of the wearers; and to provide a flexible outer cover as part of the hood for adjustably closing the bottom of the latter.

A further major object of the present invention is to devise an improved visor or window structure affording full and clear vision, and a perfect seal. In this connection it is an object to provide a novel assembly of parts for special cooperation with one another and with the material of the hood cover, and a further object to provide an improved screen.

Another major object of my invention resides in a means and method of supplying air to the front portion of the headgear. More specifically, objects of the invention are to provide means for supplying fresh air for inhalation by the wearer of the same and for preventing the collection of moisture on the inside of the window; and to utilize an outflowing air stream for keeping the interstices of the screen free from abrasive and dust particles. v

The foregoing and additional objects of the present invention will fully appear upon a study of the following detailed description and appended claims when taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a vertical central section taken longitudinally through a preferred embodiment of this invention in its normal position of use.

Figure 2 is a perspective view of the main internal framework or shaping foundation for the device of Figure 1.

Figure 3 is a perspective view of a cross member for adapting the hood top and air line to the foundation seen in Figure 2.

Figure 4 is a side elevational view, to reduced scale, of the flexible cover unit of the device of Figure 1.

Figure 5 is a view in front elevation of the unit seen in Figure 4.

Figure 6 is an exploded view, with parts in perspective, of the universal adjustment mechanism the size and shape of the head of the wearer.

Figure '7 is an exploded view, with parts in per- Figure 10 is a side elevational view of a modified form of adjusting means for adapting the headgear to fit the back of the head or neck of the wearer.

Figure 11 is a partial rear elevational view of the device of Figure 10.

Figure 12 is a front elevational view of a modified form of detachable screen for use in the window assembly of Figure 7.

With continued reference to the drawings, wherein like characters are employed to designate like parts, and with particular reference for the moment to Figure 1, the preferred form of apparatus consists of several major portions comprising a shaping unit or foundation F; a pair of shoulder-engaging supports S carrying the foundation; an adjustment or adapting mechanism A for positioning the foundation relative to the head; a' hood or cover C fitted upon and enclosing the foundation; and a window assembly W. Several of these major parts are seen individually in some of the other figures.

The shaping or foundation unit F (Figures 1 and 2) comprises a ring-shaped oval band I2 of light metal or composition, that is substantially larger than the normal human head. This, and all the other parts to be described, preferably are made of light and inexpensive material for comfort and cheapness. The band is relatively narrow at the rear but is widened considerably at the front in order that a pair of vertically elongated plates I3 may be struck out forwardly therefrom to leave a sight opening M, which is necessary because the wide part of the band normally assumes a position in front of the wearers eyes. The plates l3 are provided with bolt holes l5 and designed to support the window assembly W, later to be described. It should be understood that in this and any other instances where bolts and bolt holes are specified, welding or any other suitable fastening means may be employed.

Each side of the oval band carries a clamp l6 for adjustably receiving the straight cylindrical upper end ll of one of the rods ill of the supports S. Each rod I8 is bent at its lower end to fit across one of the shoulders of the wearer and is encased in a shoulder pad l9 for obtaining a more accurate and comfortable fit. The clamps l6, riveted at or otherwise secured to the ring l2, are on the order of the conventional clamps provided for releasably holding the vertical push rods of door transoms. Each clamp consists of a casing 22 having a vertical opening 23 in which the rod end I! may reciprocate and oscillate; a pair of levers 24 which fulcrum at one end in the casing wall, which are apertured intermediate their ends to receive the rod end I! and which have their other ends projecting outwardly through a vertical slot 25 in the casing to form a pair of manually operable handles 25.

A spring 21 is fitted around the rod and. between the levers so that it normally tends to urge the latter apart and thus cause them to bindingly engage the rod to prevent reciprocation thereof. This spring will yield when the lever handles 26 are manually squeezed together, and in this way the ring I2 and shoulder pads 19 may be adjusted vertically relative to each other to properly position the sight opening 14 of the ring. The rods 3 may be oscillated relative to the ring for the purpose of obtaining a natural fit of the pads ill to shoulders of substantially any size and shape. In fact this latter adjustment will take place substantially automatically when the complete device is brought to bear downwardly upon the shoulders, and there is sufficient automatic play in the supports to prevent discomfort to the workman when he moves his arms and head about.

The foundation ring I2 is equipped with the adjustable mechanism A for adapting the hood to heads of various shapes and sizes. For suspending the adapting mechanism the band is provided on the inner surfaces of its opposite ends with a pair of brackets 28 and 29, welded or otherwise secured in position. The bracket 28 has a pair of longitudinally extending plates 3|], each provided with a vertical series of holes 32. The series of holes of one plate are aligned horizontally with those of the other. The bracket 29 has a vertical transverse plate portion 33 in which are formed a plurality of vertically spaced, horizontal slots 34.

The adapting mechanism includes a hairpin shaped element consisting of a pair of legs 35 joined to form a curved closed end 35 which is insertible in any one of the slots 34, and having their free spaced ends provided with oppositely offset horizontal pins 31 designed to cooperate with the holes 32. With reference to Figure 2, the hairpin element may be removed by squeezing the spaced ends of its legs together to withdraw the pins from the holes and by then withdrawing the closed end 36 from the slot. For purposes of adjustment the closed end may then be placed in any desired slot and the pins may be permitted to expand laterally in any chosen pair of opposed holes. As will later be seen this type of construction permits the entire adapting mechanism to be removed bodily from the headgear for conveniently making further adjustments.

The remainder of the mechanism A is designed to position the headgear with respect to the wearers head for stabilization and yet permit controlled flexibility so that the headgear may naturally followmovements of the head without causing discomfort to the wearer. This remainder comprises a pair of slidably overlapped arms 38 and 39, the former curving forwardlyand downwardly to support a soft pad 40 adjacent the forehead of the wearer, and the latter projecting rearwardly and downwardly to hold a similar pad 42 adjacent the back of the head or neck of the wearer. The overlapped end of these fiat and somewhat resilient arms are supported from the legs 35 of the hairpin element by a clamping assembly comprising a channel shaped member 43 secured transversely of the arm 38 and having flanges 44 designed to engage the outer sides of the legs 35; a plate 45 having a pair of ribs 45 designed to cooperate with the flanges 44 to form positioning guide-ways for the legs 35; a screw 4| designed to pass through the elements 45, 43, 38 and 39; and a washer 41 and a wing nut 48 for cooperation with the screw to tightly clamp the assembly in position on the legs 35.

An elongated slot 49 in the arm 39 and through which the screw freely passes, permits the wearer of the headgear to make a proper spacing adjustment of the pads 40 and 42 to adapt them to the particular size and shape of his head and to shift the headgear forwardly and rearwardly with respect to his head and thus set it properly relative to his shoulders.

The pad 40 is mounted upon a member which is screwed or otherwise secured to a threaded pin 52. The pin projects freely through a longitudinal slot 53 in the lower end of the arm 38 and receives a clamping nut 54. The pad thus is vertically adjustable. The other pad 42, likewise is associated with a member 50, pin 52, and nut 54 for vertical adjustment along a slot 55 in the arm 99. Pad 42, however, preferably is mounted on an element 56 that is horizontally pivoted at 51 on the member 50 so that a very accurate and comfortable fit can be obtained automatically at the back of the head or neck.

The foundation or shaping unit F has a further part consisting of a cross member 58, removed from Figure 2 for clarity of illustration and shown in Figure 3. This member comprises a pair of crossed metal bows 59 and 60, preferably reenforced by making them channel shaped to provide strengthening flanges 6| along their edges as illustrated. These bows are symmetrically overlapped at their intermediate portions and riveted or otherwise secured together.

The downwardly projecting ends of the transverse or short bow 90 have holes 62 for alignment with holes 63 in the sides of the ring I2 to receive rivets or bolts; and the front lower end of the longer how 59 has similar holes 69 adapted for cooperation with holes 65 in the front end of the ring I2. The rear end of the longitudinal bow 59 is adapted to project downwardly into the bracket 29 and it has a relatively large hole 86 (Figure 3) for coincidence with a hole 81 (Figure 2) in the rear end of the ring I2. The flanges of the bow 60 are flattened in the locus of the overlap, and centrally of the overlapped areas there is a hole 08 which extends vertically through both bows.

The cover C, formed of any suitable flexible material, such as a sheet made of or embodying rubber, is designed to be drawn down over the apparatus thus far described to form a top 69 and side wall 19 for the latter. The cover forms a hood which, except for its open bottom and a window opening, is completely closed around the head of the wearer. The top of the cover rests upon the foundation unit and is incidentally held in place by two special fittings 12 and 13. The former is an eye bolt which extends down through the hole 98 to receive a nut 14 and which provides an external ring 15 for convenience in handling or hanging up the headgear. The base of the ring 15 bears against a washer 16 which seals the rubber against the cross member 58.

The other fitting 13 has an internal passageway for introducing fresh air into the headgear. It embodies a threaded nipple 11 which projects through the foundation openings 59 and 61 to receive a nut 18 and to provide a terminal designed for connection with the source of compressed air (at about five pounds pressure). A washer 19 presses and seals the rubber cover against the foundation unit. The fitting has a discharge nipple designed for connection with a rubber tube 82 which is disposed along the channel of the how 59 and discharges into a similar nipple 93 located adjacent the front of the hood. The tube 82 may of course be formed of metal or other material.

The tube 82 is kept clear of the mechanism A by suspending it on a hook 84 (Figure 9) which forms a part of a channel shaped sheet 85 that is secured in the cross member 58 and designed to locate the nut 14. The latter rests on the bottom of the sheet 85, is held against lateral displacement by the side walls of sheet 85, and is held against longitudinal displacement by the up-' wardly bent ends of a pair of tongues 86 (Figures 1 and 9) which are struck out of the sheet 85.

The discharge nipple 83 is rigidly mounted in communication with a manifold 81 that preferably is horizontally disposed adjacent the top of the sight opening I4 but that may be located elsewhere near .the sight opening provided that it does not obstruct the latter or interfere with the face of the wearer. This manifold has a downwardly projecting chamber 88 provided with a series of angular air discharge apertures 89 I Figure 8) and a forwardly projecting chamber 90 having a similar row of apertures 92. The purposes of all these apertures appear later.

The manifold may be made complete in itself but preferably it has open ends which are closed by the upright flat legs 93 of a U-shaped member 94 forming part of the window assembly W (Figure '7). These legs 93 are designed to fit flush against the inner faces of the mounting plates I3 (Figure 2), and for purposes of attachment the legs 93 are provided with a set of cooperating holes 95 for alignment with the holes I5 of pates I3. The rectangular opening, formed by the manifold and the member 99, is adapted to rather locsely receive a special window framework 91 of the assembly W, and the member 94 is provided with a back flange 96 to serve as a stop for this inserted framework.

The framework 91 is open and provided at its rear edge with a relatively wide, inwardly turned flange 98. A second flange 99, similar but narrower, is provided in spaced relation to the flange 98. A transparent window I90 such as a pane of glass, having a soft rubber border frame I02, is

urged against the flange 98 by a rectangular wire spring I513. The long sides I04 of the latter are straight and designed to engage the rubber frame, and the short sides I05 are outwardly'curved to react against the flange 99 and thus urge the rubber frame into firm sealing contact with the flange 98. Any suitable gasket may of course be p'aced at the rear edge of the window pane to take the place of the rubber frame.

The thickness of the removable rectangular framework 91 is such that it is completely housed within the main framework formed by the manifold 81 and U-member 94, and does not extend outwardly beyond the latter. The loose fit between these two frameworks is for the purpose of permitting a sealing gasket to be inserted therebetween. In the preferred illustrated arrangement the rubber hood or cover C is designed to have a frontal inturned portion I85 which not only forms the sealing gasket but also simplifies the attachment of its edges, which form the sight opening I91, to the foundation structure. When the cover is placed upon the foundation structure its inturned rectangular portion fits within the rigid framework 94 and it is then only necessary to press the framework 91 into position to obtain a snug fit and tight seal, no attaching or securing elements being required.

The row of apertures 89 in the manifold chamber '88 serve to direct fine streams of air in the form of a thin sheet downwardly and forwardly against the window pane I99. These streams thus supply the headgear with fresh air for inhalation by the wearer, and prevent the formation of condensate on the pane as the result of exhalation and temperature differences between the inside and outside of the hood. The other set of apertures, 92, discharge air downwardly adjacent the front face of the pane by way of slots I08 and I09 provided respectively in the cover portion I06 and the framework 9?. This blast of air serves to clean the outer side of the window and to prevent dust or abrasives from filling the mesh of a screen i iii.

The screen I It] is of rectangular shape to fit within the outer edge of the framework 91 and adjacent the flange 99 of the latter. The top of the screen is looped cylindrieally at Iii to receive a pivoting rod M2, the ends of which are designed for reception in a pair of aligned holes H3 in the framework 9? (Figure '7). A finishing and strengthening frame 8 I l is fitted around the sides and bottom of the screen, and to the bottom of this frame there is secured a yielding latch I I 5 (Figure l) for cooperation with the flange 99. The frame Ht also carries a tab lit so that the screen may be conveniently swung upwardly about its pivotal axis.

As seen in Figure '7, one end of the cylindrical upper edge of the screen is cut back at Hi. This is done to permit ready assembling and replacement of the screen. placing the latter in a horizontal position, that end of the rod Hf: which is adjacent the Cull/4'3" it? may be inserted in its bearing hole to the limit in the s ection, as permitted by a hole H8 in the U oer 3 (Figure 7), the other end of the r d can he placed in alignment with ie other bearing hole; and then by shifting the screen toward the latter, said other end will be projected into its bearing hole and the screen may be swung downwardly into parallelism with the window pane. This mounting arrangement permits the screen to be oscillated without inadvertent withdrawal, as it must be raised into perpendicularity with the window pane and then shifted laterally before it can be removed.

The lower part of the rubber covering hood is split by arm holes 26 into a front bib portion 522 and a back bib portion 923, these bib portions being provided with pairs of tabs I2 3 and I25 respectively which are designed to overlap beneath the arm holes. The tabs have eyelets 28 adapted to receive drawstrings or elastic straps, although any other suitable fastening means maybe em ployed. After the headgear has been properly adjusted and fitted upon the head and shoulders of the wearer, the tabs I25 are drawn forwardly and tied across the chest; and the tabs I2G are drawn rearwardly to overlap the tabs I25 and be tied across the back. This arrangement rather snugly encases the barrel of the body and prevents dust and abrasives from getting into the hood. The body seal is further enhanced by providing small holes I21 in the sides of the cover C so that the rods of the shoulder supports S may pass outwardly to permit their feet or pads I9 to bear downwardly on the outside of the cover and press the latter against the wearers shoulders.

Figures 10 and 11 disclose a modified form of adjustable mechanism that may be substituted for the padded head engaging devices seen in Figure 1. The illustrated modification is designed particularly for use at the lower end of the how 39 adjacent the back of the head or neck, to give a more expansive and comfortable stabilization. It comprises a band I28 of elastic material stretched between a pair of relatively stiff looped wires I29 which have their ends brought together and anchored, as by welding or soldering, within a small metal bushing I30. The latter rests upon a curved complemental lip I32 that forms a part of a bracket I33, which fits upon the bow 39 and is held thereagainst by a bolt I34, wing nut 54 and a plate #35.

The bolt I34 passes through the bow 39, the bracket I33 and the plate I35, and its head holds the latter in position by drawing it against the bushing I30 and against a reaction lip I36 formed on the upper edge of the bracket. By slightly loosening the wing nut, the bushing I30 is permitted to oscillate in its bearing lip I32 and the elastic band 128 may thus be swung into any desired position within a limited range. A slot I31 may be provided in the bow 39 to permit vertical bodily adjustment of the described mechanism.

The band I28 may be modified to consist of soft leather or other inelastic material, and the looped wires E29 then given suihcient resilience to permit the desired amount of yield for comfort. In either form, the ends of the band are spaced from the bow as to permit the head of the wearer to approach and recede slightly relative to the bow without bumping the latter.

In Figure 12, I have shown a modified form of screening device for use in an assembly like that of Figure '7 and in various other combinations. This device comprises a sheet of screen I38 mounted upon a U-shaped. wire by having its bottom edge and the lower portions of its side edges bent inwardly to form cylindrical encasements for the wire. Soldering, welding or any other suitable attaching methods might be substituted.

The upper portions of the side edges of the screen are cut away so that the free upper ends of the wire, which carry ofiset pins M0, may be pressed toward each other and then released to cause the pins me to enter the holes II 3 (Figure 7); deflection of the upper ends of the wire may be permitted either through inherent resilience of the latter or by bending the screen side edges nonuniformly in such manner as to permit play or free movement of the upper ends, with wire defiection being permitted adjacent the lower corners thereof. A lifting tab M2 is pivoted on the central portion of the bottom of the wire member, as illustrated.

One of the major features of the entire apparatus, above described, resides in the construction of the shield or hood cover C and its relationship with the structure which it encloses. The cover is not cemented or otherwise permanently fastened to the foundation structure at any point,

andhence may be quickly removed without damage by simply sliding the window assembly out of its framework and removing the nut I8 and the eye bolt F5. The life of the cover is limited,

whereas that of the remaining parts is practically unlimited; and accordingly it is never necessary to replace anything but the cover, which is relatively inexpensive. The headgear, due to its adjustment features, may be worn by many different workmen, and accordingly should be designed for proper hygiene and to meet sanitation laws. The rigid parts of the illustrated apparatus may be quickly disassembled for sterilization. The cover may also be conveniently sterilized and, if desired, each workman may be provided with an individual cover so that when work is done in shifts it will be unnecessary to purchase a complete headgear for each man.

The invention may be embodied in other-specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing de- ThiS scription, and all changes which come within the meaning and range of equivalency ofthe claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States Letters Patent is:-

1. In a protecting device of the character described, a framework, a hood fitted upon said framework and designed to protect the head of a human body, said hood being of sufiicient length to extend downwardly at least to the shoulders of the body, and supporting means connected to said framework and adapted to rest upon the shoulders, said supporting means passing outwardly through said hood whereby it is adapted to press the lower part of the latter against the shoulders.

2. In a headgear, a frame structure designed to support a shield, said structure having sets of corresponding pairs of holes and slots spaced in opposed relationship, means designed to cooperate with the head of the wearer, and a device for adjustably mounting said means on said frame structure, said device having a loop end designed to be inserted in any one of said slots and having a forked end providing yieldable terminals designed to cooperate with any pair of said holes.

3. In a protecting device of the character described, a framework designed to be supported on the human body and having a channel formation designed to be disposed in the line of sight of the wearer, a flexible shield carried by said framework, and having a channel shaped portion adapted for telescoping relationship with said channel formation, and a window assembly of substantially the same size as said shield portion and likewise adapted for telescoping relationship with said-channel formation, whereby said shield portion may serve as a sealing gasket between said channel formation and said window assembly.

4. In a headgear, a hood designed to protect the face of the wearer, and having a frontal opening for disposition adjacent the eyes of the wearer, and a window assembly designed to close said frontal opening, said assembly comprising a transparent pane, a screen spaced outwardly from said pane, means forming a chamber between said pane and said screen, and means for passing a current of air into said chamber and outwardly through said screen into the atmosphere.

5. In a headgear, a hood designed to protect the face of the wearer, and having a frontal opening for disposition adjacent the eyes. of the wearer, and a window assembly designed to close said frontal opening, said assembly comprising a transparent pane, and means for mounting said pane in a substantially vertical position and in sealed relation to the edge of said opening, and an air supply manifold disposed within the hood adjacent the upper edge of said transparent pane, said manifold having a horizontal portion disposed in front of said pane and extending from side to side thereof, said manifold also hav-. ing a vertical portion disposed behind said pane and extending below said horizontal portion, said horizontal and vertical portions of said manifold having a series of ports provided therein for discharging a sheet of air against both the inner and the outer surface of said pane.

6. In a protecting device of the character described, a substantially horizontally disposed ring member for supporting a protecting hood; a pair of supporting elements, securing means for connecting said supporting elements to opposite sides of said ring member for individual vertical adjustable movement with respect thereto, said supporting elements extending downwardly below said ring member and adapted to rest upon the shoulders of a human body.

7. The protecting device described in claim 6, wherein said supporting elements are angularly adiustable about their axes within said securing means.

8. In a protecting device of the character described, a substantially horizontally disposed ring member for supporting a protecting hood, a pair of supporting elements, means for securing said supporting elements to opposite sides of said ring for vertical adjustive movement with respect thereto, said supporting elements extending downwardly and adapted to rest upon the shoulders of a human body, and means connect ed to said ring and operable to engage the head of the body for stabilizing said ring upon the shoulders of the body.

9. In a protecting device of the character described, in sub-combination, a substantially vertically disposed window frame having a transparent pane mounted therein; a screen disposed parallel to but spaced from one surface of said pane; a manifold connected to said frame at the top thereof and having portions extending either side of said pane; means for supplying a blast of air to said manifold; and means associated with said manifold and frame for directing jets of air to either side of said pane, for freeing the surfaces of said pane and screen of dust.

10. In a protecting device, in sub-combination, a protective hood having a frame set into an opening in the front thereof; said frame having a pair of aligned apertures provided therein, a screen fitting within and normally closing said frame and having pintles engaging said apertures for mounting said screen for pivotal move ment into an open position disposed approximately at an angle of ninety degrees with respect to closed position, said screen having a relieved portion adjacent one pintle for permitting said screen to be axially moved to bring said other pintle out of its aperture when said screen is disposed in open position.

11. In a protecting device, a substantially horizontally disposed ring member adapted to form a foundation for a protective hood. an

elongated element having means connecting its opposite ends to opposite sides of and bridging said ring member and having an intermediate guiding portion, affair of downwardly curving supports securedto the guiding portion of said element for bodily movement into a plurality of horizontally adjusted positions, and a. head engaging pad mounted for upward and downward adjustive movements on the lower end of each of said supports.

12. The device described in claim 11, wherein said means is operable to adjust said element into a plurality of vertical positions with respect to said ring member.

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