US1878371A - Ophthalmic mounting and method of making same - Google Patents

Description

Se`pt. 20, 1932. s. E. BOUCHARD OPHTHALMIC MOUNTING AND METHOD OF MAKING SAME Filed June 25Q 1932 Flag 'IIIIIZ FIG.

Patented Slept. 20, 1932V UNITED STATES PATENT OFFICE SAMUEL BOUCHARD, OF ROCHESTER, NEW YORK, ASSIGNOR TO BAUSCH & LOMB OPTICAL COMPANY, OF ROCHESTEIQNEW YORK, A CORPORATION OF NEW YORK OPHTHALMIC MOUNTING AND METHOD OF MAKING SAME Application mea :une 25,

. This invention relates to ophthalmic mountings and more particularly it has ref- 4 erence to means for. attachingmountings to lenses to provide rimless spectacles. One of theA objects of my invention is to provide an improved method and means for attaching rimless mountings to lenses. Another object is to provide an imperforate lens strap having a recess on its inner face. A`

:further object is to provide a lens strap having a folded over portion providing a recess for anchoring a retaining element for securing the strap to a lens. A' still further object is to provide a neat appearing ophthalmic mounting which can be attached to a lens without the use of screws. These and other objects and advantages reside in certain novel features of construction, arrangement and combination of parts and in the method of constructin vand arranging said parts as will hereinafter be more fully described and pointed out .in the appended claims.

f Referring to the drawin Fig. 1 isa front elevation ofv a pair of spectacles embodying my invention.

Fig. 2 is a plan view of a blank from which my improved strap is made.

Fig. 3 is acentral sectional view of same.

Fig. 4 is a plan view of the blank after it has been struck to forma cupped portion. Fig. 5 is a sectional view of same. Fig. 6 is a sectional view of the strap after thewall of the cupped portion has been struck down and bent over.

Fig. 7 is a sectional view showing my improved strap attached to a lens. f

Fig. 8 is a plan view of a modiiied form of `strap.'

Fig, 9 is a sectional view of same.

Fig. 10 is a plan view of same after the' projections have been bent over to form a recess: Y

Fig. 11 is a sectional view of same.

Figa- 12 is a sectional view showingv the modified strap attached to a lens.'

Fig., 13 is a sectional view showing another modified strap attached to` a lens.

One embodiment of my invention is shown in Figs. 1-7 of the drawing wherein 10 indicates a pair of spectacles comprising a bridge 1932. Serial No. 619,304.

mounted. vTheclamp 14 comprises a shoe portion 16 adapted to engage the' edge of the lens and the two spaced straps 17 and 18 which are positioned, respectively, on the front and rear surfaces of lens 13.

The inner side of strap 17 is provided with a recess 19 having a mouth 2 0 which is narrower than the body of. the recess. The

method of forming this recess is best de- .e

scribed by reference to Figs. 2-6. A blank such asthat shown in Figs. 2 and 3 is first formed in any suitable manner. This blank is then held in a'suitable'die and struck toform the cup-shaped portion having the wall 21 as shown in Fig.'5. The wall 21 is then struck downwardly so that it is turned inwardly and flattened out as shown in Fig. 6 thereby providing therecess 19 having the narrow mouth portion 20. The strap 18 is provided with a countersunk aperture 22. The two-straps are then :formed up so that they are substantially paralleland the clamp is then soldered to the end piece or to the bridge member, all as is`well known te those skilled in the art.

In attaching the mounting to the lens 13' v i the straps 17 and 18 are positioned on opposite facesof the lens with the countersunk aperture 22 opposite the opening 23 in the lens. A retaining element 24 is then positioned in the opening and aperture. The retaining-element is preferably formed of a fusible, non-metallic material such as the pyroXylin material sold under the trade-mark Lumarith, Heat and pressure are then applied to the element so that the softened material can be forced into the recess 19 and fill the opening 23 and aperture 22. While 'e will be irmly embedded andheld in. lace.

The metal lplug member 25 prefer-ably as a tapered heed ae Shown in Fig-,5.7; The e a also eliminated. Various modifications can and serves to force the softened materiall firmly into contact with the sides of the recess and opening. The plug member has a head portion whose face is flush with the strap, thereby providing a metallic covering for the retaining material so that none of the material is visible. This structure provides an eflicient mounting which can be attached to a lenswithout the use of screws. The disadvantages of loose screws and wobbly mounting connections are thereby eliminated as well as the danger of breaking lenses due to screws which are too'tight. The lens can be removed by merely applying heat so that the element becomes Huid and runs out of the opening and aperture. A new element will, of course, be needed for attaching the mounting to the lens.

The modification shown in Figs. 8-12 is i made by forming a blank as shown in Figs.

8 and 9 with a reduced portion 30 having projections 31 on the strap 17. The strap 18 is' provided with the countersunk aperture 22. These projections arey then bent over to provide the recess 32 as shown in Figs. 10 and 11. This mounting is attached to the lens 13 by the fusible, non-metallic retaining element 24 in the manner heretofore described.

The modification shown in Fig. 13 comprises the two spaced straps 17' and 18 each having a recess 34 formed on its inner face in a manner illustrated in Figs. 2-7. In this case the retaining element 24 is cut to the proper length so that when softened by heat it will fill the two recesses 34 without any excess overflow.

From the foregoing it will be apparent that I am able to attain the objects of my invention and provide an improved rimless ophthalmic mounting which can be readily attached to a lens without the use of a screw. The front sides of the straps which Contact with the front faces ofthe lenses can b e suitably engraved or otherwise ornamented.

The metal plug member 25 can be omitted if desired but its use enhances the appearance of the mounting besides aiding in forcing the -softened material of the retaining element into the recess and lens opening. Since no screw is used, the disadvantages of loosened screws and wobbly connections are eliminated. Likewise the danger ofbreaking obviously be made without departing from the spint of my invention.

I claim:

1. An ophthalmic mounting comprising a strap positioned in contact with the surface of a lens having an opening, said strap being imperforate and having a bent-over portion on its inner face which forms a recess, and a non-metallic retaining element positioned in said openin'g and anchored in said recess.

2. An ophthalmic mounting comprising two spaced straps positioned, respectively, on opposite faces of a lens having an opening, one of said straps being imperforate and having a reduced portion, said portion having a plurality of integral projections which are reverselyy bent to form a recess on the inner face of said stra-p, the other strap having an aperture, and a retaining element positioned in said aperture and'opening and anchored in said recess.

3. An ophthalmic mounting comprising a member having two spaced straps positioned, respectively, on opposite faces of a lens having an opening, one of said straps being imperforate and having on its inner face an integral wall formed to provide a recess, said recess having a mouth which yis narrower than the remainder of the recess, the` other strap non-metallic retaining means positioned in said opening and anchored in said recess and aperture. 4. In an ophthalmic mounting the combination of a member having a strap provided with an aperture having a seat portion in communication therewith, said strap being positioned on the surface of a lens having an opening with the aperture opposite said opening, a fusible retaining element positioned m-said aperture and opening and having a portion anchored in said seat portion anda member positioned in said aperture and embedded in said element, said member having portions for anchoring it in said element.

5. An ophthalmic mounting having in combination two spaced straps positioned, respectively, on opposite faces of a lens having an opening, one of said straps being imerforate and having a recess on its inner ace, said recess having a mouth which is narrower than another part of the recess, the other strap having an aperture which is in alignment with said opening, a retaining element positioned in said opening and aperture and anchored in said recessvand a member positioned in said aperture and partially embedded in said element.

6. An ophthalmic mounting comprising fa member having two spaced straps positioned, respectively, on opposite faces of a lens having an opening, one of said straps having an aperture opposite said opening, a retaining element positioned in said opening and aperture, said element being anchored to the other strap, and a member positioned in said aperture and embedded in said element.

7. An ophthalmic mounting comprising a member having two spaced straps positioned in'contact with opposite faces of a lens having an opening, each of said straps having Alens between the straps with alignment with said aperture and member having a strapan imperforate portion provided with an -integral projection, said projection being bent over to provide a recess on the inner face of each of said straps and retaining means positioned in said opening and anchored in each of said recesses.

8. The method of making an ophthalmic mounting which comprises forming a member having two strap portions, reducingthe thickness of one of said portions, forming integral projections on the reduced portion and bending over said projections to form a recess on one face of the strap.

9. The method of making an ophthalmic mounting which comprises forming a strap on a vmember, forming an upstanding, in-

tegral cup-shaped portion on said strap and flattening down the w'all of said portion to the surface of the strap to form a recess on the-face of the strap having a mouth which is narrower than the remainder of the recess.

10. The method of making an ophthalmic mounting comprising the steps of forming two straps on a member, forming af cupshaped portion having an upstanding wall on one of said straps, forcing down said wall to provide a recess having a mouth which is narrower than the remainder of the recess, forming a countersunk aperture in the other strap, positioning said mounting on a lens having an opening with the straps contacting opposite faces of the lens, inserting a fusible retaining element in said aperture and opening and anchoring said element in said recess to thereby secure said mounting to said'lens.

11. The method of making an ophthalmic straps on a member, forming integral projections on one of said straps, bending sald projections over to provide a recess 0n the inner face ofthe strap, forming an aperture in the 1other strap, placing said mounting on a lens to said element to anchor said'element in said recess and secure said mounting to the'lens. 12. The method of attaching an ophthalmic mounting. having spaced straps to a lens hav-A choring means on one of the straps, forming an aperture on the other strap, placing the the opening in anchoring means, inserting a fusible retaining element in said aperture and opening, applying heat to render said element plastic and anchor it in alignment with said'opening, the other strap having lan aperture in alignment with said opening, a fusible, non-metallic retaining element substantially filling said opening, said element being held by said anchoring means, and a member having a head and a lprojecting portion, said member being positloned in said aperture with'the head substantially iiush with the strap and the projecting portion embedded in said element. v

` ASAMUEL E. BUCHARD.

lmounting which comprises forming two an opening,

Aing an opening which comprlses forming anto said means and inserting a heated member through the aperture andinto the plastic element.

13. A n ophthalmic mounting comprising a sitioned on the face of a lens having an opening, said strap having an` aperture in alignment with said opening,

CERTIFICATE or CCRRECTICN.

Patent No. \1, 878, 371. September 20. 1932.

SAMUEL. E. BOUCHARD.

It is hereby certified that error appears in the printed specification'of the above numbered'patent requiring correction as follows: Page 3, line 59, claim 12, for "heated" read headed; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

`Signed and sealed this 22nd day of November, A. D. 1932.

M. J. Moore,

(Seal) Acting Commissioner of Patents.

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