US666928A - Eyeglasses. - Google Patents

Description

No. 666,928. Patented Jan. 29, l90l. R. B. FINCH.

EYEGLASSES.

(Application filed June 4, 1900.)

(No Model.)

ROBERT BROOKS FINOH, OF DENVER, COLORADO, ASSIGNOR OF ONE-HALF TO EDWIN T. JONES, OF SAME PLACE.

EYEGLASSES.

SPECIFICATION forming part of Letters Patent No. 666,928, dated January 29, 1901.

Application filed June 4. 1900. Serial No. 18,929. (No model.)

To all whom it may concern: I

Beit known that 1, ROBERT BROOKS FINoH, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Eyeglasses; andI do declare the following to be a full,o1ear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same,.reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in eyeglasses; and it consists of the features hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figures 1 and 2 are front and top views, respectively, of one form of my improved eyeglasses. Figs. 3 and 4 are similar views of another form of construction. Figs. 5 and 6 are perspective views showing dilferent forms of my improved lever-guard.

The same reference characters indicate the same parts. in all the views.

Let the numeral 5 designate what is known in this art as a saddle-bridge. This bridge has heretofore been used, so far as I am aware, only on spectacles. It is rigid and consists of a bow 5, bends 5, and forward projections 5, whose extremities are connected with the eyeglass-frame 6 or the lensmounting 7, as the case may-be.

Referring now to Figs. 1, 2, and 5, let S designate a short tube or hollow bearing made fast to the mounting 7 at the extremities of the bridge parts 5*. This tube 8 forms the fulcrum-bearing for the guard-lever 9, whose vertical part 9 passes through the tube. This guard-lever is made from a single piece of wire, which is bent at the upper extremity of the part 9*, as shown at 9, forming a sort of shoulder, which rests upon the top of the tubular bearing. Extending rearwardly from the shoulder 9 is the lever-arm 9 to whose extremity is secured a small disk 10, composed of tortoise-shell or other suitable material. From the lower extremity of the bearin'g 9 a lever-arm 9 extends forwardly. A spring 12 is coiled around the tube, one of its extremities being connected with the leverarm 9 and its other extremity engages the mounting 7 of the lens, whereby the spring normally holds the guard in the closed position.

Referring now to Figs. 3, 4:,and 6, the guardlever 13 is provided with a depending pin 13, which is bent at its lower extremity, as shown at 13, to hold the guard in place when the parts are assembled. From the top of the pin 13 an arm 13 extends rearwardly, its extremity being provided with a small disk 10. From the pin 13 an arm 13 extends forwardly. The pin 13 engages a tubular bearing 8, mounted on the rim 6 of the frame.- A

spring 12, coiled around the tube, is connected with the lever-arm 13 at one extremity and bears against the frame 6 at the opposite extremity.

From the foregoing description it will be observed that my improvement embraces the combination of a saddle-bridge and a leverguard having but a small bearing-surfacenamely, the disk 10. The said bridge, which extends well down on the nose on both sides,

- supports the glasses, while the guard maintains the bridge in place and prevents the glasses from turning or falling forward. The small area of the guard-disk is amply sufficient for this purpose. The lever guards heretofore used have been provided with a long bearing-surface which grips the nose on opposite sides and in some instances causes such irritation that the eyeglasses cannot be worn. Yet with the ordinary eyeglass-bridge the extensive guard-surface is necessary in order to maintain the weight of the eyeglass securely in place. In my improvement the saddle-bridge affords the chief support and only needs to be supplemented by a small bearing-surface on the spring-held leverguard. This bearing-surface is so limited and has such a small amount of work to perform that it can be worn by any one without causingirritation or annoyance. Moreover, the saddle-bridge is the best possible construction, since it permits adjustment of the lenses for pupilary distance. This adjustment is practically unlimited, since the angle of the bends 5 of the bridge either laterally or vertically may be varied at pleasure.

By varying the location of the tubular bearings S'the distance between the guard-disks 10 when not in use or when in their normal position may be varied at will. This is done by attaching the said tube at a point either forward or backward from a central position on the frame or lens-mounting. By a central position is meant a position in the plane of the lenses. By moving this tube rearward or in the direction indicated by the arrow in Figs. 2 and 4: it is evident that the forward arms of the levers will engage the frame or mounting of the lens and limit their closing action, while the movement of the said bearings in the opposite direction would have the opposite effect.

Having thus described my invention, what I claim is In eyeglasses the combination with the eyeglass-frame or lens-mountings, of a bridge having bends at the extremities of its bow portion, said bends being substantially perpendicular to the plane of the lenses, and projections extending forwardly from the bends to the frame or lens-mountings; and spring-held lever-arms extending across the bridge, and suitably fulcrumed on the frame or mountings, their inner extremities or nosepieces being normally spring-pressed toward the bow of the bridge whereby there is cooperative gripping action between the nosepieces of the lever-arms and the bow of the bridge, in a plane substantially perpendicular to that of the lenses.

In testimony whereof I afiix my signature in presence of two witnesses.

ROBERT BROOKS FINOII. Witnesses:

A. J. OBRIEN, GRACE MYTINGER.

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