US1146169A - Lens-mounting. - Google Patents

Description

G. JOHNSTON.

LENS MOUNTING.

APPLICATION FILED mmzs. 1915.

I 1,146,169 v PatentedJuly 13, 1915.

Wumsssss,

GEORGE JOHNSTON, 0F DETROIT, MICHIGAN.

LENS-MOUNTING.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed January 25, 1915. Serial No. 4,102.

To all whom it may concern Be it known that I, GEORGE JOHNSTON, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Lens-Mountings, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to eye-glasses and spectacles.

It comprises a fastening device for connecting the bridge, or in spectacles the bows and bridge, with rimless glasses. It is a fastening which is especially designed to largely do away with the liability of breaking the lens that heretofore has existed by reason of the use of a screw passing through the lens.

In the drawings, Figure 1 is a perspective of the shield that is cemented to the lens. Fig. 2 is a view of the lens and the shield showing the relative sizes of the perforations through the shield and through the lens. Fig. 3 shows the shield applied to a fragment of the lens. Fig. 4: is a fragmentary view of a pair of eye-glasses showing the bridge connected with the lens.

I-Ieretofore it has been customary to attach the bridge and the guard to the lens by the use of a strap and passing a screw through perforations in the strap and a perforation in the glass. This has been a fruitful cause of broken and chipped lenses. I believe that it has also been suggested to cement the strap to the lens so as to avoid the liability of breakage and chipping but in case the cement becomes loosened the lens falls and breaks. My invention obviates both of these difliculties without partaking of any of their disadvantages.

a designates the lens, I) the bridge, 0 the guard pivoted on the stud d that passes through the yoke-like terminal 6 of the bridge. The guard is yieldingly engaged by a strong but small spring not shown. This is a customary construction and needs no exposition.

is a finger piece by which the guards may be slightly expanded to place them upon the nose.

My invention comprises a shield g cemented to the glass as shown in Fig. 3 and Copies of this patent may be obtained for held in place by such cement. This shield is provided with a pair of ears It provided each with a perforation. These ears are intended to fit over the perforation 2' in the lens but it will be noted by comparing the perforations in the lens and in the shield, as shown in Fig. 2, that the perforation or opening in the lens is larger than the perforation in the shield. Consequently, when the shield is cemented to the lens and the two perforations are brought to register and into concentric relation, the screw 7' may be passed through the perforations and it will be held in spaced relation with respect to the lens where it passes through. The result is that liability of chipping or breaking the lens with the screw is materially lessened. However, it will be noted that if in any case the shield comes loose from the lens the lens will not fall because the screw will still retain it. The screw is retained in the strap terminal is of the bridge.

What I claim is: I

1. The combination with a lens of a shield cemented to the lens and provided with a perforation, the said lens being also provided with an opening therethrough larger than the perforation through the shield, the perforation and opening being arranged so that the smaller perforation overlies the larger opening, a member for supporting the lens and a screw carried by said member and passed through the opening of the lens and the perforation of the shield and held out of contact with the glass of the lens by the shield with its perforation smaller than the opening in the lens.

2. The combination with a lens of a shield straddling the lens at one end provided with projecting ears having perforations adapted to register with the perforations in the lens but of less diameter than the perforations in the lens, a member for supporting the lens and a screw carried by said member passing through the perforations of the shield and the lens and held out of contact with the glass of the lens by reason of the diflerence in diameter of the perforations.

In testimony whereof, I sign this specification in the presence of two witnesses.

GEORGE JOHNSTON.

Witnesses:

STUART C. BARNES, VIRGINIA C. SPRATT.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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