US2537275A - Nonfogging goggle - Google Patents

Description

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Patented Jan. 9, 1951 NONFOGGING GOGGLE Robert L. Malcom .Ir., Chicago, Ill., assignor to" Chicago Eye Shield Company, Chicago, 111., a

corporation of Illinois- U i pl ation n l, 5, Serial No. 587,235 T V v '2 Claims. (Cl; 2 14 7 n This inventionl'ias'. to do with goggles of the type now being used extensively in various industrial fields for protecting the eyes of the wearer against flying particles, etc. More particularly, the'invention is-concerned with an improved: goggle which in addition to affording full vision and adequate protection is so constructed as to prevent fogging of" the lens surfaces under the most unfavorable heat conditions.

& The principal object of the invention is 'tojproi non-fogging goggle of new and improved construction. j. 5 Another object is to provide an improved goggle of the character described in which the exposed lenses are so constructed as to withstand I spring pressure against the front edge l5 and is blows of various sorts without fracture. v

? While the foregoing statements are indicative in a general way of the nature of the invention, other more specific objects and advantages will be apparent to those skilled in the art upon a full understanding of the construction of the goggle.

A preferred embodiment of the invention is presented herein by Way of exemplification, but it will of course be appreciated that the invention is susceptible of embodiment in other structurally modified forms coming equally within the scope of the appended claims.

In the accompanying drawing:

Fig.1 is a face view of a goggle constructed in accordance with the invention;

Fig. 2 is a top plan view of the goggle;

Fig. 3 is a side view of the same;

Fig. 4 is'a horizontal section through one of the eye-cups of the goggle, taken on the line 4-4 of Fig. 1; and

Fig. 5 is a perspective view of the spacing ring positioned between the lenses in each eye-cup.

The goggle used to illustrate the invention comprises two individual face conforming eyecups l and H which are connected together by a flexible bridge member l2 and are held in position on the wearers head by an adjustable strap l3. As the two eye-cups are identical in construction it will only be necessary to describe one of them in detail.

The eye-cup l 0 includes a tubular frame member 14 of generally circular cross section. This frame member-which may be molded from a suitable plastic material or constructed in any other way-terminates forwardly in a front edge i which is disposed in a plane at right angles to the axis of the member and terminated rearwardly in a rear edge It which isshaped to conform to the face of the wearer. Intermediate the front and rear edges l5 and I5, and prefer;- ably in the portion of greatest rearward extent, the frame member 14 is provided with one or more air vents H, which vents are covered. over by fine wire screens I8 for preventing the entrance of any foreign particles.

. Arim member [9 is screwed onto the outer surfaceof the front edge l5 of the frame member 4. This rim member projects forwardly a short;distance beyond the front edge and retainsfan outer lens 20 and an inner lens 2 l. The

outer, lens 20 completely closes off the front end of the eye-cup and is held against forward displacement by a small inturned flange 22 'on the rim member I9. The inner lens 25 seats under held in position by a resiliently compressible spacing ring 23, which ring is located between the two lenses about their margins. The ring 23, which is preferably made of thin sheet metal, with a split 24 at one point, and with a plurality of integral tongues 25 projecting from the plane of the ring at spaced points, provides an air space 26 between the lenses.

The rim member I9 is formed at points opposite the air space 26 with a plurality of openings 21, which openings serve to place the air space 26 in free communication with the air outside the eye cu thereby permitting circulation of such air into and out of the air space 2%. These openings also afford conveniently located recesses for use in retaining the outer lens 25 and the spacing ring 23 whenever the rim member I9 is unscrewed from the frame member I4 to obtain access to the lenses for cleaningthe ring 23 for this purpose being provided at two or more points about its periphery with small radially projecting lugs 28 which'enter and interlock with two of the .openings 21. To insert the lugs 28 in the openings 21. it is merely necessary to momentarily constrict the ring 23 to a diameter small enough for thelugs to clear the threaded portion of the rim member l9, after which release of the ring will permit the same to spring back to its normal diameter.

The inner lens 2| is provided adjacent its periphery with a. plurality of openings 29, which openings are arranged in a circle just inwardly of the front edge [5 of the frame member [4. These openings place the air space 26 between the lenses in communication with the air on the inside of-the frame member and allow circulah air .into and out of the space 26.

ding a completely covering front lens? I (1 lens behind the same, and with an" air space between the lenses, which air space is vented about its periphery to the outside of the eye-cup and is also separately vented to the inside of the same, a goggle structure is obtained which, in addition to offering unobstructed vision and adequate protection against eye injury, permits of a unique air circulation which has been found ve'fiy effective in alvoidirfg fogging "of 'h'o'th lenses under conditions in which the ordinary goggle is unusable.

I claim:

1. In a goggle of the type described, a a'ace conforming eye-cup, an inner lens,'an outer lens, rim means for retaining sai -lenses "over the front opening of said eye-ciipwith 'the outer lens completely closing oiT said front opening, spacer 4 front edge of said eye-cup and the outer lens being disposed against lens retaining means adjacent the front edge of said rim, an annular spacer member disposed between said lenses adjacent the peripheries thereof, said eye-cup having at least one ventilating opening in the side thereof away from the nose-engagingiportion, said inner lens hajvin'g a .plu'rality 6f ventilating apertures located "adjacehtthe peripherythereo'f and within the inner periphery of said rim member and the inner surface of said eye-cup and providing i'Ji'e -o'nly Ventilation between the interior of said eye-cup and the air space between said spaced lenses, 'and a plurality of ventilating apertures 'arra'rfged aroundthe side wall of said rim mem 'ber so as to provide vent openings into said air means between said lenses and s'p'aci-ng the same apart to provide an air space therebetween, said eye cup being closed around the side wall except for at least;one ventilating opening spaced op "p'o'sitely "from the nose-engaging p'or'ti'on' of said "ye ciip, said inner lens having a plurality of ventilating "apertures located "adjacent the pe- "ripl'ie'ify 'there'ofandwithin the inner periphery "dfsaidrim member and theihner surfaceof "said eye-cup and providingtlie 'onlyfvntilating comiiiiinicatipn b'etWeen'th'e interior'of said eye-cup anditlrefair space between said spaced lenses, and "'a 'plu'r' alit'y "of ventilating fapertures arranged around the side wall of said rim mean-s interiiii'diate said lenses so'asito 'prdvidevent openings frbmfthe outside into "said air jpace.

2 I'n "a goggle of th'eftype ide'scribed, 'a "face conforming -eye'-cup, a 'riminfember detachably secured to the front "edge "of the eye-cup, outer 'aln'd nine;- lens pos itioned "within said rim rner'nb'er, the inner lens bein'g disposed against the space betweemsaid spaced lenses.

ROBERT L. MALCOM, JR.

:REF'ERENCES QI'I ED The following references are of record'in the file of this patent:

UNITED STATES PA'IENTS

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