US2089234A - Nose guard - Google Patents

Description

937- J. w. WELSH 2,089,234

NOSE GUARD Original Filed Dec. 29, 1935 2 Sheets-Sheet 1 J. W. WELSH Aug. 10, 1937.

NOSE GUARD Original Filed Dec. 29, 1955 2 Sheets-Sheet 2 u kw awflesf Z1). [(16555 Patented Aug. 10, 1937 NosE GUARD 7 4 James W. Welsh, Providence,- i i The -Welsh Manufacturing Company, llf'rov-f f idence, R.'I., aporporation off Rhqdejlsla nd'. j U

Original application December 29,1933; Serial N01 704,393. Divided and thisapplioationzApril 28,1 1

Serial No.,722,895. Renewed January 30,

3 Claims. (01, 88-49) The present invention relates to nose guards for ophthalmic mountings, particularly nose guards; comprising non-metal material. The presentsapplication is' filed as a division of applimosearestgfrom'zthe rea'r'lace to, or'near to, the stront iface: This introduces the actuality, 1or,.iat :least,:ithe' possibility, :of. :the metal coming into contact with thewskinpfthe wearers nose,-:and Fafioth'er; obj ect iof the-invention :is' to I, provide a gnouel cguardifof the i aboveedescribed character thatzshallieliminatethis defect.

eaaklrirthezsguard .of the said Letters Patent, furdlheismore; thezmetal and the; nonemetal parts are securedi togetherlsinsuch waylthat they sometimes ahave aitendencytosbecome separated from each :pthergan'cl zstilli'a iurtheraob-ject of the invention, EUKGITE'fQIZEEiEtOEIJIOVidG, anew and improved guard 'Of-f theraboveedescribed :character the metal and ztheanongmetal parts of' whichzshall be joinedc'toigethenisolsecurelyfaszto:be almost inseparable. zlirmother gobiiect ai'si tolprovide anew andyimovedrnosel-fguard support.

a ;furthertob'jectis to provide a novel connec- -t1'on between -the guard and its support.

i eQthr .ran'ds further 2 :objects a will begexplained ahereinafterzaand will be particularly pointed out in'the appended claims.

inytention:wil1 now be explained in connecition wvith'lthe;accompanyingzdrawings, in which Fig. 1 is a rear elevation of an ophthalmic mounting embodying-ahose-guard according to the present mvention;;Fig. -2'.-is a plan of the same; HFigs'i :3 and' l' 'areienla'rged sections taken upon thelines 3 3 .andr.4 4:of -;Fig. 1, looking in the ldire'ctions'iof theiarrowsjiFigfi is a rear elevation f the novellguardiof thetpresent invention; Fig,

.tent.

length, as is shown' more particularly in Figs. 4, 6 to 10, 12 311(1'213, though this metal'thickness is Figs l, 6, l0 and; 1-3; ,iThe parts are rigidly looking inthejdirection fof thearrowsyFigif'l isa perspective of the novel,- nose-restsupport of the .presentzinvention';zprioro to itsassembly withvqthe ,nose rest; Figj 8iis a c section :taken upon the; line 81-8 of Figifly-zlooking, inthe rdirectiontofl-the .5

= cation'xS'erial No; $704,393, filed December 29,

. 1933; and'isinresponse to a requirement by the arrows;-;Fig.i'9 -i's.%a-1sec'tiontaken upon the line I Patent zofiice for-division. 9-9 offFi'g. 8,;looking:.in the-direction ,of; the InrLetters Patent :-.of the United .States, No. arrows Fig. :10 issectionltakeniuponithesline 15955343, granted -Apri-li24, 1934, there is disll0f-'-l0:oof'sFigsfiplobkirig in the directionlofethe "1'0 closed anew 'an'd improved nose guard 'compris- .arrowsjtEig-llsisfa planaillustrating a step :inthe l0 ing-san'.unbacked,.: non-metal,:nose rest that has -manu'facture;.Fig; .12is agsetionztflsehiuponthe essentially the fiexibility,. softness and other -1ine I2 .l1-2-:of Figal'lg'. showing. therelativeposicharacteristics of the non-metal material, but tions of the parts prior to the descentofthe-movithatfl'szneyerthelessIeinforceclby a metal support able die; .and Figvl'3z-is a similar section,r showing '15 zto,,pornpensate foim-thexweakness of such -nonthe iparts'in the relativefip'ositions occupied after 1=5 metahmateriali y thedescentof the movable'die." 5

Anobjectof the'present invention is to pro- Each'nose rest" I 0 istc'ompose'd of; some.;nonev de:aenewlzandiiniproved guard of thecharacter metal 'material, like: celluloid, unpacked any any disclosed nin thessaid Letters Patent. reinforcing or supporting member, such as metal.

F 1 :Accordihgto the construction disclosed in the Eachinos rest ID is' providedswith annopeningzlt {3 said? LettersiPatent, themetal support extends extending; .in the' f direction ofathezthi'ckness di- -;entirely;io :substantially; through the non-:metal 'mensiono'f thrioseres'tfromthe inneriface 128 of.1thenose rest, inward'a substantial 'distance ltowar'd' theouterE'face 'l 6',fas"illustrated-lmore :pariticularlyi in Fi'gsi fi; 10' ahd' 13..': Thethi'cknessi distance between ':the: oppositely disposed faces A 6 and I8 'is, of'gcours'e, small poinririred with the dimensions along said faces, iii" the direction of the lengthtor -theiwidthof the nose 'rest.' .A i'nietal in. a copending application;:SerialfNo. 758,392, 1 filed December 20, 1934. The opening-J4, into which t eme a ii sk t r'm ber2111s received, extends over a: distance, in a a'direotion along the faces;;l 6-;and; 8;f 1tha=isgof substantial :extent,,comparedwwith the dimensions of the ;guard,-so as to provide for the use of a substantial amount of gmetaL iwhichis of corresponding ex- The thickness of the metal diskor'other memberZO is small comparedwith itsdiameter'or very thin compared with the thickness-,of the nose rest, as is illustrated more particularly in secured together, as :hereinafter described, thus forming an integral, one-piece, unb'acked "nonmetal guard, except ,for theimetalsportion .20.

''The metal diskzumay originally the more or t; o is a section'itakennupon the .line 6-,6 Lot Fig. 5, elessr on av nv r upshap agillfistrated 255 from the periphery 33 of the disk inward to about the center of the disk, and bending the stem 29 out of the plane of the sheet at the convex side, as illustrated in Figs. 7, 8 and 9. Concavo- convex prongs 35 and 31 are thus formed at the sides of the slot 3|. It is the thus slotted, pronged disk 20 that is later embedded in the opening M of the unbacked nose rest. The stem 29 may, however be formed in other ways, without slotting, as illustrated and described in said application.

To effect this embedding, the metal member 20 is first placed on a fixed die 4|. As illustrated in Fig. 12, the stem 29 is shown inserted in a correspondingly shaped-and-sized opening 39 of the fixed die 4|, with the disk 29 exposed and its concave side facing away from the die 4|. A strip 43 of the non-metal material is fed through a guide 45 and over the metal member 2|]. During its passage through the guide 45, the strip 43 may be very slightly heated in any desired way, preferably electrically, electric terminals;for the heater being shown at 41. During a moment of pause in the feed of the strip 43, a'movable die 49 is caused to descend upon the strip, from the position illustrated in Fig. 12 to the position illustrated in Fig. 13.

Owing to the above-described relative dimensions of the parts, and the concavo-convex shape of the metal disk 20, as well as the method 'of manufacture of the disk 20, its periphery 33 is relatively sharp, which sharpness is materially contributed to by the prongs 35 and 31. As the concave side of the disk 20 is'disposed adjacent to the under face of the strip 43, as shown in Fig. 12, the sharp portions-of the disk are caused to cut their way into this heated, under face of the strip 43 during the application of pressure by the descending die 49. The same actiontakes place even when the metal member is unslotted. During this digging action, the metal member 20 displaces the non-metal material in this heated under-face area of the metal disk, thus cutting its own opening |4 into the non metal material, of a size and shape exactly corresponding to the size and shape of the metal member 20. The metal disk 20 thus becomes securely embedded in the opening I4, in the position formerly occupied by the displaced, nonmetal material.

- The movable die 49 is provided with a cutting face 5| that, in cooperation with a'correspondin'g face 53 of the fixed die 4|, severs from the strip 43, simultaneously with the before-described pressing operation, a' portion of the non-metal material that has the shape andsize desired for the unbacked, non-metal nose re st ID, as illustrated in Figs. 1 to 6, 10 and 13. The active faces 55 and 51 of the dies 49 and 4|, furthermore, are curved, as illustrated in Figs. 12 and 13, to impart the desired, curved shape to the non-metal nose rest I0.

The face 51 of the fixed die 4| has a circular depression 59 into which the non-metal material of the strip 43 is caused to flow or roll over against the under or convex face of the metal member 20, thus locking the metal member 20securely into the opening. M, as is illustrated more particularly at 6| in Figs. 3 to 6, 10 and 13. The metal becomes thus embedded in under the flowed-over portion 6| of the non-metal material. The pressing force exerted by the moving die 49 is sufiicient, not only to pressthe heated zylonite or other non-metal material intothe depression 59, but also to flatten out the concaveconvex disk during the curving of the non-metal nose rest H), as before described. This flattening out of the metal further acts to embed the metal in under the flowed-over portion 6| of the nonmetal material. When the non-metal material becomes chilled, it is almost impossible, without breaking the metal stem 29, to pull the metal member 20 out of its embedded position. As the relatively large metal member 20 is forced into the celluloid sidewise, instead of along its edge periphery, a greater holding action is obtained. It requires great pressure to force the disk 20 into the zylonite, and great pressure to remove it. This would be true even if the metal member'Zll had been unslotted at 3|, but this slot 3|, and the prongs 35, 31 adjacent thereto, contribute to the holding action of the metal in the zylonite'.

The described method has been found toelimihate all possibility of the parts becoming separated. The stem 29 is later looped into the open:- ings 6 about the tongue l2, as before described. Modifications will occur to persons skilled in the art, and all such are considered to fall within the spirit and scope ofthe invention as defined in the appended claims.

What is claimed is: 1 1. A guard having, in combination, an unbacked non-metal nose rest provided with an opening extending, in the direction of the thickness dimension of the nose rest, from one face of the nose restinward a substantial distance toward the opposite face of the nose rest, and a metal support for the nose rest comprising a disk having a y k stem cut therefrom from the periphery of the disk inward, the stem being bent out of the disk to provide a slot in the disk, whereby prongs are formed in the disk at the sides of the slot, the

slotted, pronged disk being embedded in the said opening of the unbacked nose rest.

2. A guard having, in combination, an unbacked non-metal nose rest provided with an opening extending, in the direction of the thickness dimension of the nose rest, from one face of the nose rest inward a substantial distance toward the opposite face of the nose rest, the thickness distance of the nose rest between the said faces being small compared with the dimensions along said faces in the direction of the length or the the'nose rest comprising a disk having a stem cut therefrom from the periphery of the disk inward, the diameter of the disk being substantial compared with the dimensions of the nose'rest,

55 width of the nose rest, and a metal support for the thickness of the disk being small compared with the said diameter and being very thin compared with the said thickness distance, the said stembeing bent out of the disk to providea slot in the disk, whereby prongs are formed in the disk at the sides of the slot, the slotted, pronged disk being embedded in the said opening of the unbacked nose rest. a I

3. A guard comprising a non-metal nose rest having two oppositely disposed faces the distance dimension of the nose rest, is small compared with the dimension along said faces in the direction of the length or the width of the nose rest, the nose rest having an opening extending from one of 9 between which, in the direction of the thickness said faces toward the other face over a distance, in a direction along said faces, that is of sub stantial extent compared with the dimensions 0! the nose rest, and a metal support for the nose rest having embedded in the said opening a disk of corresponding extent, whereby the metal support serves as a reinforcement to compensate for the weakness of the non-metal material, the disk having a stem out therefrom from the periphery of the disk inward, the stem being bent out of the disk to provide a slot in the disk, whereby prongs are formed in the disk at the sides of the slot.

JAMES W. WELSH.

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