US2009528A - Goggle - Google Patents

Description

Jufiy 3Q, 1935., H. F. SHINDEL ET AL GOGGLE Filed July 26, 1934 Han y 1 shindig].

Thumds A Wills/1n.

INVENTORS ATTORN EY This complete invention provides for simulta- Patented July 30, 1935 UNITED" STATES. PATENT "OFFICE a 1 2 ,009,528?" ,GoGGLn,.fl Harry F. Shindeland Thomas A .-Willson,-Read- 7 ing, Pa., assignors' to Will'son Products, Inc., lteading, Pal, a. corporationol;Pennsylvania- I Application July as, 1934, Serial No. 737,050

5 Claims.

This invention relates to improvements in goggles the main object of which to insure against fogging or breaking of the lenses'in industrial service-or the like, and it consistsin the improved construction hereinafter'fullyset neously securing both these objects by a novel and advantageous construction involving provision for a ventilating inflow of air from the front of the goggles through a circular series of channels surrounding each lens edge, with radial diverting of such inflow at the rear of the lenses by means of a ventilating ring adapted-to serve also as a shock absorbing device.

In all cases where this latter purpose is to be accomplished we have found it important for the avoidance of lens breakage by exterior shocks, that this shock absorbing ring should not only be adapted to absorb a normally disrupting shock by a form-distorting yield thereof, but that any rebound action of the distorted ring should be avoided as actually tending to cause breakage of the lens because of sudden reversal of the strain upon it. To this end we specifically provide for preventing such rebound action by making the ring practically non-elastic, preferably by forming it of a non-elastic pressure-distortable material; the fact that this novel quality calls for replacing of it by a new ring after it has been subjected to a distorting shock being relatively unimportant. Though this specific non-elastic shock-absorbing ring is advantageously employed in connection with the ventilating functioning provided for in my complete invention set forth,

it may also be employed independently of the latter.

Fig. 1 is a sectional view indicating the application of our invention to one eye cup of a known type of goggles in which the lens-receiving chamber is formed in the forward portion of the cup.

Fig. 2 is a similar view showing our invention applied to another known type of eye-cup goggles in which the lens-receiving chamber is provided Fig, 3 is a front rangement'ofair inlet channels around'the edge.

in a QParate screw-cap clampingly secured vt thernaincup. 1 p I view clearly showing the arof the lens.- I

Fig, 4 isa separate plan view of the preferred shock absorbing function involves non-resilient compression ofthe ring'material as indicated in F 'ig.-"7-. A

jig. Sis a separate view of the interior lens clamping ring shown in-theFig. 1 embodiment. Referring to the drawing, it will be under-. stood thatwhether, the lens-receiving. chamber iO-is formed in-the main framing H of the goggles as in Fig. 11,,or :in the lens-clamping screw cap I2 shown in Fig. 2, the lens is seated. against an outer circular flange l 4 by screw pressure operating through the interposed ventilating ring 16'. This clamping pressure is provided in the Fig- 2 construction by merelyscrewing on the cap [2 to .seat the ring I6 against an inner offset 20; while in the Fig.1 construction we employ an interiorly located screw ring 22, engaging an interior screwthreading 24 in the lens-receiving chamber H], to

fixedly set the interposed ring l6.

To most satisfactorily secure the ventilating of the lens-receiving chamber I0, as is required particularly for freeing the lenses from objectionable moisture or fogging, we provide for an inflow of air around the edge of eachlens from the front, by means of a circular series of airchannels 30, formed in the wall of the chamber ill with free front inlets 32 and radially directed outlets 34 to said chamber, rearward of the lens. The ventilating ring IE, which is held in the zone of the outlets 34 and the inner lens face, is shaped to provide restricted passage ways 40, 4 0 through it to the chamber In, for ventilation; these ways being preferably provided by means of spaced and relatively staggered contact projections 42, d2 upon the upper and lower surfaces of the thin ring band 4|. In the slightly modified ring construction indicated in Fig. 6 these contact projections 42 are provided only upon one face thereof, and it will be readily understood that other equivalent ring constructions may be employed to provide for such radial inflow-of air The radial inflow of air to the lens chamber through the air ways in ring l6, comes directly from the front of the goggles through the circular series of channels and insures ample ventilation and a practically uniform temperature of the outer and inner faces of the lenses with certain avoidance of fogging. This occurs irrespective of the coincident functioning of the ring [6 as a shock-absorber, though such functioning is naturally incidental to the ventilating structure of the ring and commonly called for in industrial service involving the related danger of fogging. In the ring construction shown in Fig. the thin ring band 41 will yield in form, to any undue shock upon the lens; whether resiliently or not depending essentially upon the character of the material employed. While with the modified construction indicated in Fig. Gthere can be no yielding to lens shocks, and consequently no shock absorbing utility, unless a material is employedwhich is especially adapted to such functioning because of non-resilient compressibility which enables the maximum thickness of the ring, through the knob projections 42, to be reduced as indicated in Fig. 7. Such required compressibility is simply and satisfactorily provided 'for by making the projections 42 readily pressable -into the plane of the ring band as indicated, with no resulting rebound to strain the lens after absorption of a shock.

When-thus compressed to advantageously absorb an accidental lens shock without rebound action, replacement" of the ring is called for, but in any case its required functioning in the ventilation of the lens-holding'chamber, is normally efiected with insurance against fogging of the lens. 7 r

' The invention as fully set forth in its preferred embodiments, may obviously bemodified within the spirit of the invention as defined in the appended claims. a 'What we claim is:

1. In goggles having a lens-holding chamber, lens-clamping means comprising an interposed compressible non-resilient ring arranged in clamping contact with'the inner surface of the lens and shaped to operate as a non-rebound lensshock absorber;

2. In goggles having a lens-holding chamber, lens-clamping means comprising an interposed ring arranged in clamping contact with the inner surface of the lens, said ring having spaced nonresilient projections on its opposite faces arranged in staggered relation and adapted to normally space said lens from its seat and to non-reboundingly crush under a lens shock.

3. A goggle framing for clampingly holding a lens, comprising a fluted outer flange having s spaced circumferential contacts with a lens edge and intervening non-contacting recesses forming a series of open front rearwardly directed ventilating channels surrounding said lens, and lens clamping means movable relatively to said outer flange and comprising a lens seating ring having inner lens face contacting non-resilient projections adapted to normally space said lens from its seat to form air channels communicating with said open front ventilating channels; said non-resilient ring projections being adapted to non-rebounding crush under a lens shock.

4. A goggle framing for clampingly holding a lens, comprising a seating ring having spaced contacts with the inner face of a lens, and an outer flange movable relatively to said ring and having spaced circumferential contacts with a lens edge and intervening radially projected flutings forming a series of open front rearwardly directed ventilating channels surrounding said lens edge rearward of the outer surface of said lens and arranged to deliver rearward of the inner surface of the latter.

5. A goggle framing for clampingly holding a lens, comprising a seating ring having spaced contacts with the inner surface of a lens, and an outer flange movable relatively to said ring and adapted to engage a lens edge rearward of its outer surface, said flange wall having a circular series of axially directed conduits forming open front ventilating air channels surrounding said lens and adapted to deliver to the rear of said lens between the spaced contacts of said lens seating ring.

' HARRY F. SHINDEL.

THOMAS A. WILLSON.

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