Патент USA US2407518код для вставки
Sept. l0, 1946; G,_|-|_ SCHAUWEKER 2,407,518 EYE PROTECTION DEVICE Filed Dec. 1a, 194s ` v ’ INVENTOR' 650265 lh'. SCHAUMEKBE BY ~ i . ~V X me #www 2,407,518 Patented Sept. 10,- 1946 ¥UNITEDA >'ls'rli'vriazs PATENT OFFICE ’ EYE PROTECTION DEVICE George H. Schauweker, Southbridge, Mass., as- t signor to American Optical Company, South-v bridge, Mass., a voluntary association of Massa chusetts Application December 18,'194á, sei-lamb., 514,774 ' l 2 This invention relates to improvements in eye which contacted 'the lenses and heldl them `in asf ' sembled relation with the eyecups _against a shoulder y.formed onthe inner periphery of said protection devices and has particular reference to novel means and method of forming a goggle and of providing said goggle with ventilation means. One of the principal objects of the invention is eyecups. to provide novel means and method of forming a _. ' . ied several separate parts which _required numer-V ous operations during the manufacturefthereof. goggle of the above nature which will be economif cal -and simple to manufacture with the major parts of saidgoggle being formed in integral re Another diiiiculty encountered with construc-. . 10 lation with each other. . ' It will be apparent that constructions .of this na ture were costly to manufacture, as they embod Another object of the invention is to provide novel means and methods of inserting and securT tions of this nature is that after the lenses have beenl frequently changedr or replaced, the thread ed portions of the eyecups and retaining rings have atendency to wear, thus making it impos ing leases in the goggle eyecups without the useof sible to properly support the lenses within the retaining rings or other separable parts. Another object is to provide ventilation means 15 eyecups, and therefore necessitating the replace ment of the eyecups or retaining rings. ., integrally formed in the eyecups adjacent the lens In goggles of this nature a large variety of ven-v_ receiving grooves to prevent the lenses from fog~ tilating means have been used in the past, all of ging, which required the use of Vseparable partsA which Another object is to provide ventilation means of the above nature whereby the edge of the lenses 20 were adapted to be attached t0 diiïerentportions of the eyecups.V It is quite apparent that’separa willl form a portion of the walls of the `Ventilating ble parts such as metal screens, apertured plates, raised louvers, etc. would greatly increase the‘cost ‘ Another object is to provide further Ventilating oi.' manufacture of the goggles. means forthe eyecups which will eliminate the apertures. . »~ use of other separable parts such as metal screens 25 or apertured plates. " Other objects and advantages of the invention will become apparent from the following descrip tion taken in connection with the accompanying It, therefore, is one of the primary objects of the'present invention to overcome the above dif ñculties by forming all of the‘req'uiredk parts in integral relation with each other. - l Referring more particularly tov the drawing drawing and it will be apparent that many 30 wherein like characters of reference designate the parts throughout the several views, _the gog changes may be made in the details of construe» gle embodying the invention, as shown in Fig. 1 -tion, arrangement of parts and methods shown toFig. 4 inclusive, comprises broadly a pair and` described, without departing fromthe spirit of the invention as expressed in the accompany ing claims. of moulded eyecups I0. of yany suitable >umould-r 35 able material such as cellulose acetate, cellulose nitrate, methyl-methacrylate,- artificial resins, I, therefore, do not wish to be limited to the ex act details and arrangements shown and described etc. of illustration. nasal sides by means of. a flexible bridge member> 40 I I. The bridge member~ i I comprisesa plurality .t Referring to the drawing: Fig. l is a front View of the goggle embodying the invention. Fig. 2 is a top plan view of the goggle shown in Fig. 1 with a part thereof shown in section. Fig. 3 is a fragmentary sectional view of lthe 45 goggle taken on line 3-3 of Fig. l. ` Fig. 4_ is a fragmentary sectional view of a mod ified form of the invention. , ’ The eyecups II) are connected together at their ` as the preferred form only has been given by way` ' of hollow ball members I2, which are connected together by loose link members I3, vwhich' are ' headed over on the inside of the hollowballs I2, so that the series of hollow balls I2 and the link members I3 will have the action of a.link chain. As shown in Fig. 2, the eyecups I0 are provided with suitable openings I4 at their nasal sidesY through which the ends of the bridge member II are inserted. The bridge member II is held in In the past with goggles of this nature the lenses were usually supported in position in the 50 adjusted relation with the eyecups by means of the latches I5 which are pivotally attached toeyecups by means of retaining rings. These rings the inner walls of thev eyecups by means of pins were provided with a portion which was adaptedr orv the like IB. The latch members' I5 are pro-`V to overlie a> portion ,of the eyecups and -to be vided with slotted ends I 1 which are adapted to threadedly connected thereto. These retaining vrings were provided- with an inner annular lip 55 straddle any one of the link members I3 >to se# 2,407,518 3 cure the bridge member to the eyecups in adjusted relation therewith. of the lenses into the interior of the said eyecups, A tu'bular member I8 of soft rubber or any other suitable soft heat resisting material may as shown by the arrows 26. It will be seen that the air thus admitted into the interior of the eyecups will be directed sub be slipped over the balls l2 to provide a comfort stantially across the inner surfaces of the lenses able contact between the bridge member and the to insure a like temperature adjacent the inner suriacesof the lenses as the temperature on the outer surfaces of the lenses. Further ventilation means have been provided nose of the wearer. ' I . ' ‘ ' ¿ì The eyecups l0 are preferably moulded with a face formed contacting portion I9 which is adapted to ñt snugly with the contour of the face. „[10“ in the eyecups l0 to insure comfort to the eyes, The eyecups are provided at their extreme -outer and those parts of the face of the wearer that are ends with elongated slots 20 which are adapted v-conñned within the said eyecups. This ventila to receive »a suitable headband 2| for supporting tion means comprises a plurality of openings 21 the eyecups upon the face ofthe wearer. located in the rearwardly extending side por The eyecups I0 are provided with lens receiv tions of the eyecups between the lens receiving ing grooves 22 formed about the inner periphery grooves and the headband attachment means. of the eyecups opposite the facecontacting edge. The saidopenings 21 may be formed when the The lens receiving groove-s 22 are shaped to sub eyecups are moulded or may be formed by drill stantially the shape of the bevelled edgesv ofthe ing', Piercing or the like after said eyecups are lenses and are adapted‘to receive the lenses 23, 20 moulded. which may be of any desired type such as clear, Fig. ílshows a modification of the Ventilating colored lenses, protective lenses, etc. means wherebyvthe Ventilating grooves 25 adja ’ The lenses 23v are inserted in the lens grooves cent the lenses 23 may be formed by milling or 22,’by heating the eyecups l0 adjacent the lens the like after the eyecups are mouldably fonmed. grooves an amount suiiicient to soften the mate The eyecups lll, although described above as rial and allow the eyecups to be stretched. The being formed of plastic material which may be lenses 23 are then snapped into place. After the heated and stretched in the vicinity of the lens lenses have been positioned. within the lens receiving groove, may be initially molded to a size grooves 212 the Veyecups are allowed to cool there greater than the diameter of the lens» in the by causing the material to shrink about the edges 30 vicinity of the lens receiving groove. With the of the lenses.A It will be seen that with this latter arrangement, the eyecups are formed of a plastic material which may be injection molded method the lenses 23 will be held securely within the eyecups 22. When the lenses are to be whereby the material of the eyecup,.when re changed, or replaced, the eyecups are heated ad moved from the mold, will have an internalfstrain jacent the lens grooves, and the lenses may be 35 which upon subsequent heating may be relieved readily snapped out and new lenses inserted. causing the material of the eyecups to shrink. The eyecups l0 are each provided with an in By forming the eyecup to an initially larger size ternal lip or shoulder 24 adjacent the gro-ove 22 than the lens, it is quite apparent that the lens may be positioned in alignment with the lens to form a backing _support for the lenses. This will prevent the lenses from being forced inward 40 receiving groove, the assembly then heated in ly by a blow or the like against the said lenses. amount suiiicient to relieve the internal strain in To prevent fogging of the lenses, suitable ven the material 'to cause said material tofshrink` tilation means have been provided in the form of about the contour edge of the lens and thereafter a plurality of grooves or recesses 25, said grooves allowed to cool to retain the lens in position in being spaced about the inner portion of the eye - the groove. In this manner, the initial'stepiof heating and stretching the eyecup to permit in cups adjacent the lens grooves, as best shown in Fig. 3. The grooves 25 are adapted to -be mould sertion of the lens in the lens groove is'y not necessary. ably formed in the eyecups when the eyecups themselves aremoulded or may thereafter be cut As a further modification, the only part of the if desired. , eyecup having the lens receiving groove therein may be formed initially larger in diameter than It is particularly pointed out that the spaced the lens so that only said part of the eyecup need grooves o_r recesses 25 are so formed that the base be heated and permitted to shrink. of. each extends inwardly, from the front edge of With the latter arrangement, the part of the the eyecup, about the contour edge of the lens eyecup shaped to ?lt the face may be formed'to a below'the depthof the'lens groove 22 to provide a definitely controlled size during the injection space vbetween said lens edge and the base, and molding. thence turns inwardly below the plane of the lip In the case where the entire eyecup is injection or shoulder 24 substantially in the direction of molded to a size larger than that required for the the plane of the inner' surface of the lens. The' depth to which the grooves or recesses 25 are 60 final eyecup, care must be exercised in control formed is controlled so that sufficient clearance about the contour edge‘of the lens will exist after the lens hasA been secured within the groove 2_2. The internal lip or shoulder 24 increases the length of the groovesin the direction of the plane of the lens and functions as shunt means for de ling the subsequent shrinking whereby the vfinal size and shape of the eyecup will be that'required to ñt the wearer. This may be controlled by forming the eyecup to an initial size and-with a given amount of strain therein so that when heat ed to relieve said strain, the eyecup will assume the desired final shape and size required. ll'ecting'air entering'the grooves in the direction of the plane of the inner surface of the lens. From the foregoing description, it will be seenV that simple, efficient, and economical means and It will `be seen that when the lenses 23 are in 70 methods have been provided for accomplishing all the objects and advantages of the invention. serted in the eyecups l0 that the bevelled edges of Having described. my invention, I claim: the lenses 23, adjacent the Ventilating grooves l. In a device of the character described apair 25 and in cooperation therewith, will formven‘ of eyecups _formed of heat expandable plastic tilation openings whereby air will flow from eX teriorly of the eyecups about the >bevelled edges material, each of said eyecups having. anintegral. edge portion shaped substantially to ‘ñt the face 2,407,518 5 of the wearer and having an opposed integral portion formed with an ‘inner lensI receiving groove and a plurality of radially disposed spaced grooves extending transversely of the lens re~ ceiving groove with the said spaced grooves being o-f a greater depth than the depth of the lens receiving groove and a lens located within said lens receiving groove with the contour edge thereof in intimate engagement with said groove between the respective transversely extending grooves, with the base of the respective trans versely extending grooves spaced from the edge of the lens and with the forward circumferential edge of the portion having the lens receiving groove therein being of a circumferential dimen sion less than the greatest circumferential dirnen» sion of the lens, the integral side wall on the tein-V poral side of each eyecup being of a thickness much less than the thickness of the remaining side walls of the eyecup and having a plurality of spaced openings extending therethrough. 2. In a device of the character described a pair of eyecups formed of heat expandable plastic material, each of said eyecups having an integral edge portion shaped substantially to ñt the face of the wearer and having an opposed integral portion of increased thickness formed' with an inner bevelled lens receiving groove therein and a plurality of radially disposed spaced grooves eX tending transversely of the lens receiving groove with the said spaced grooves being of a greater depth than the depth' of the lens receiving groove anda lens located within said lens receiving groove with the contour edge thereof in intimate engagement with said groove between the respec tive transversely extending grooves, with the base of the respective transversely extendingV grooves spaced from the edge of the lens and with the , » 6 , forward circumferential edge of the portion hav ing the lens receiving groove therein being of a circumferential dimension less than the greatest circumferential dimension of the lens, the in tegral side wall on the temporal side of each eye cup being of a. thickness much less than the thickness of the remaining side walls of the eye cup and having a plurality of spaced openings ex tending therethrough. ' n 3. In a device of the character described a pair of eyecups formed of heat expandable plastic material, each cf said eyecups having an integral edge portion shaped substantially to fit the face of the wearer and having an opposed integral r portion formed with an inner lens receiving groove and a plurality of radially disposed spaced grooves extending transversely of the lens receiv ing groove with the said spaced grooves being of a greater depth than the depth of the lens re ceiving groove and a lens located within said lens receiving groove with the contour edge thereof in intimate engagement with said groove between the respective transversely extending grooves, with the base of the respective transversely ex tending grooves spaced frorn the edge of the lens and with the forward circumferential edge of the portion having the lens receiving groove therein being of a circumferential dimension less than the greatest circumferential dimension of the' lens, the integral side wall on the temporal side of each eyecup being of a thickness much less than the thickness of the remaining side walls of the eyecup and having a plurality of spacedopen ings extending therethrough, said integral edge portion shaped substantially to flt the face of the wearer having a slotted headband receiving portion adjacent the temporal sides thereof. Y GEORGE H. SCI-IAUWEKER.