US758815A - Eyeglasses. - Google Patents

Description

No. 758,815. PATENTED MAY 3, 1904.

N. BOURQUIN & P. WILLSON'. EYEGLASSES.

APPLICATION FILED DEC. 16, 1903.

N0 MODEL.

My (fa-M u nuns co. huoToq moo. wawmcro u c UNITED STATES Patented May 3, 1904.

PATENT OFFICE.

NUMA BOURQUIN AND FREDERICK VVILLSON, OF READING, PENNSYLVANIA, ASSIGNORS TO THOMAS A. W'ILLSON, OF READING, PENNSYLVANIA.

EYEGLASSES.

SPECIFICATION forming part of Letters Patent No. 758,815, dated May 3, 1904.

Application filed December 16, 1903. Serial No. 185,404. (No model.)

To In whom it may concern:

Be it known that we, NUMA BOURQUIN, a citizen of Switzerland, and FREDERICK IVILLsoN, a citizen of the United States, both residing in the city of Reading, county of Berks, State of Pennsylvania, have invented certain new and useful Improvements in Eyeglasses, of which the following is a specification.

Our invention relates particularly to frameless eyeglasses; and it consists, mainly, in an improved form of lens-fitting by means of which the bow-spring and nose-guard are attached to the lenses, as hereinafter fully described in connection with the accompanying drawings.

Heretofore in order to spread the lenses so as to secure a proper pupillary distance eyeglass-fittings have been commonly provided with a clamping post or stud projected beyond the inner edge of the attached lens, and to the outer end of such stud the bow-spring and nose-guard have been suitably secured, and such fittings have also been commonly provided with strap-pieces or wings conforming to the outline of the lens and contacting with the rim of the latter for the purpose of preventing turning of the fitting upon its pivotal connection to the lens. The main purpose of our invention is to attain these results by means of a simple and economical construction and more satisfactorily, especially as to the prevention of such pivotal movement of the fitting. To this end we provide for utilizing the lens-rim strap as an attaching-plate for the bow-spring and nose-guard by arching the same so as project the central portion thereof beyond the lens-rim, with the lens-clamping ear or ears extending in a radial direction from said raised central portion, the latter being thus brought into proper position relative to the lens to permit the bow-spring and noseguard to be placed directly in contact therewith, and the space between said raised central portion of the strap or attaching-plate and the rim of the lens enabling said bowspring and nose-guard to be readily clamped to said plate by any suitable clamping means extending beneath the raised plate. The

arched form of the attachingeplate frees it from contact with the lens-rim, except at its ends, thus preventing the rocking of the fitting liable to occur upon a central point of contact with the rim.

The invention is more fully described in connection with the drawings, which illustrate a preferred embodiment thereof.

Figure 1 is a full front view of a pair of eyeglasses embodying our invention. Fig. 2 is an enlarged view, similar to Fig. 1, of our improved lens-titting, partial outlines of the connected lens, bow-spring, and nose-guard being indicated by' dotted lines. Fig. 3 is an edge view corresponding with Fig. 2, but showing the bow-spring and nose-guard clamped to the fitting. Fig. I is a separate view of the preferred clamping device employed. Fig. 5 shows the sheet-metal blank from which our improved fitting is preferably formed, the dotted lines indicating where the required bends are made. Fig. 6 indicates a slightlymodified construction.

As shown, the lenses A are frameless, and the bow-spring B and nose-guard (J are separately formed, as usual, with similar ends 6 and 0, respectively, adapted to be overlapped and clamped to the lens-fitting D. This improved fitting is preferably formed from a sheet-metal blank, such as indicated in Fig. 5. This blank comprises a main portion 2, having preferably narrowed ends 3 3 and adapted to form what is herein termed the arched attaching-plate of the fitting, and, as shown, oppositely-extending central arms 4 4, at right angles to said main portion 2. and terminating in perforated lens-clamping ears 5 5. These arms are adapted to be bent on the dotted lines 6 6 into approximately parallel planes at right angles to the body portion 2 and are properly set for securing the correspondingly-perforated lens to the terminal ear or ears 5 thereof.

The length of the arms or lens-clip extensions 4 of the integrally-formed fitting is sufficiently greater than the distance from the lens perforation to the rim of the lens to raise or project the central portion of the attaching-plate 2 beyond the rim of the lens, as required to secure the proper spread of the lenses when the parts are assembled. WVhile the central portion of the attaching-plate is thus projected beyond the rim of the lens, however, the outer portions 3 3 thereof are bent or curved in the plane of the lens, so as to bring the extremities thereof into firm contact with the rim of the lens on opposite sides of the lens-perforation, thus giving an arched form to said plate, the rise of which is considerably greater than that of the arc of the lens-rim spanned thereby,.while the lens-clip extensions 4 lie in the common radial The lens-contacting ends of the attachingplate are preferably notched, as indicated at 7, so that each end will contact withthe rim only at points adjacent to the edges of the latter, thereby tending to stiffen laterally the connection between the lens and the fitting.

The raised central portionof the attachingplate, as shown, is flat, so that the overlap-v the essential features and advantages of which have been fully pointed out and are specifically indicated in the claims.

What we claim is 1. A lens-fitting comprising an arched attaching-plate for bow-spring and nose-guard, the spread ends only of which are adapted to contact with the rim of the lens, and an integrally-formed lens-clip extension from the raised portion of said arched plate, said extension being bent to approximately radial position relative to the arched plate.

2. In eyeglasses, a lens-fitting comprising an arched attaching-plate for bow-spring and nose-guard the spread ends only of which contact with the rim of the lens, and an integrallyformed radial lens-clip extension from the raised central portion of the plate, in combination with a bow-spring and nose-guard superposed directly upon said raised central portion of the arched plate, and means for clamping said superposed parts to the latter.

3. In eyeglasses, a lens-fitting comprising an arched attaching-plate for bow-spring and nose-guard the spread ends only of which contact with the rim of the lens, and an integrally-formed radial lens-clip extension from the raised central portion of the plate, in

combination with a bow -spring and nose-

Images