US2048469A

US2048469A - Ophthalmic mounting

Info

Publication number: US2048469A
Application number: US23882A
Authority: US
Inventors: Chester G Salmon
Original assignee: Bausch and Lomb Inc
Current assignee: Bausch and Lomb Inc
Priority date: 1935-05-28
Filing date: 1935-05-28
Publication date: 1936-07-21
Anticipated expiration: 1953-07-21

Description

Patented July 21, 1936 UNITED STATES PATENT OFFICE OPHTHALMIC MOUNTING Application May 28, 1935, Serial No. 23,882

3 Claims.

The present invention relates to ophthalmic mountings and more particularly to means for attaching rimless mountings to lenses.

One of the objects of this invention is to provide an ophthalmic mounting having improved means for attaching it to a lens. Another object is to provide an ophthalmic mounting having independent lens engaging. straps. A further object is to provide an ophthalmic mounting in which the lens engaging straps can be adjusted to retain lenses of different thicknesses. A further object is to provide an ophthalmic mounting which can be readily assembled and taken apart without the use of screws. These and other objects and advantages reside in certain novel features of construction, arrangement and combination of parts as will hereinafter be more fully set forth and pointed out in the appended claims.

Referring to the drawing:

Fig. 1 is an enlarged fragmentary front view of a lens connection embodying my invention.

Fig. 2 is a rear view of same.

Fig. 3 is a horizontal section of same.

One embodiment of this invention is illustrated in the drawing wherein I indicates a bridge which is secured to a lens I I by straps I2 and I3. The bridge I0 and shoe I4 are fixed to the strap I2 which has an aperture I5 opposite an opening I6 in the lens II. The strap I2 also has a hole I! beyond the edge of the lens II and a groove I8 in the inner surface of the strap I2 extends between the aperture I5 and hole H.

The front strap I3 is preferably imperforate and has an anchoring means opposite the opening I6, which comprises a cavity IS with a restricted neck 20. Beyond the edge of the lens II, the strap I3 has a tongue 2I which extends through the hole H in the strap I2. A groove 22 in the inner surface of the strap I3 extends from the anchoring means longitudinally along the strap I 3 and tongue 2I and a notch or depression 23 is formed in the tongue and opens into the groove 22.

In assembling this mounting the lens II is placed between the straps I2 and I3 and the tongue 2| is placed in the hole I I. With the members held in this position a fusible material 24 such as the pyroxylin material sold under the trade name of Lumarith or a low melting point metallic alloy, is introduced through the aperture I 5 and heat is applied. The fusible material 24 extends through the aperture I5 and'opening I6 into. the anchoring means in the strap I3 and also extends along the grooves I8 and 22. After the fusible material 24 has hardened, the end of the tongue 2| extending through the hole I! beyond the surface of the strap I2, is cut off. As the straps I2 and I3 are independent, lenses of any thickness can be mounted and the fusible material 24 extending along the grooves I8 and 22 completely fills the space between the straps I2 and I 3 and the lens I I so that the lens is tightly held even though the straps I2 and I3 do not rest exactly upon its surfaces.

From the foregoing it will be apparent that I am able to attain the objects of my invention and provide an ophthalmic mounting having a connection in which the straps are independent and can engage lenses of dilferent thickness and form a tight and permanent union therewith. Various modifications can, of course, be made without departing from the spirit of my invention or the scope of the appended claims.

I claim:

1. An ophthalmic mounting comprising two independent spaced straps positioned, respectively, on opposite sides of a lens having an opening, one of said straps having an aperture opposite said opening, the other of said straps having anchoring means opposite said opening, one of said straps having a hole therethrough, a tongue on the other strap extending through said hole, a groove in the inner face of the strap having the tongue, said groove being in communication with said opening and extending along said strap'and tongue, and a fusible retaining element positioned in'said opening and said aperture, engaging said anchoring means and filling said groove.

2. An ophthalmic mounting comprising twoindependent spaced straps positioned, respectively, on opposite sides of a lens having an opening, one of said straps having an aperture opposite said opening, the other strap having an anchoring means opposite said opening, one of said straps having a hole therethrough beyond the edge of said lens, the other of said straps having a tongue extending through said hole, a groove in the inner face of the tongue extending along the strap and in communication with said openin a groove in the inner face of the other strap also connecting the first groove and the opening, and a fusible element extending through said aperture and said opening, engaging said anchoring means and filling said grooves.

3. An ophthalmic mounting comprising two independent spaced straps positioned, respectively, on opposite sides of a lens having an opening, one of said straps having an aperture opposite said opening, a hole beyond the edge of the lens, and a groove in its inner surface connecting said aperture and said hole, the other of said straps having anchoring means opposite said opening,

7 a tongue adapted to extend through said groove and a groove in its inner surface beginning at said anchoring means and extending longitudinally of said tongue and a fusible retaining member extending through said aperture and said opening, engaging said anchoring means and substantially filling said grooves.

CHESTER G. SALMON.

July 21, 1935.

. R. E. SANBORN GRAPE STEMMER Filed Feb. 23, 1935 Ralph dnborn