US626536A

US626536A - Eyeglasses

Info

Publication number: US626536A
Authority: US
Publication date: 1899-06-06
Anticipated expiration: 1916-06-06

Description

Patented lune 6, I899.

W. B. GREENE.

EYEGLASSES.

(Application filed Mar. 18, 1899.)

(No Model.)

. dropping out of this fastening-screw.

UNi'rnn STATES PATENT OFFI E.

IVITJLARD B. GREENE, OF \VAKEFIELD, MASSACHUSETTS.

EYEGLASSES.

SPECIFICATION forming part of Letters Patent No. 626,536, dated June 6, 1899.

Application filed March 18, 1899. Serial No. 709,587. (No model.)

To all whom it may concern.-

Be it known that I, WILLARD B. GREENE, of \Vakefield, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvementsin Eyeglasses, of which the following is a description sufficiently full, clear, and exact to enable those skilled in the art to which'i't appertains or with which it is most nearly connected to make and use the same.

My invention relates to improvements in eyeglasses, and is intended to provide a new and useful arrangement that will securely and firmly hold the parts of the frame together and avoid the difficulty occasioned by the loosening of the fastening-screw as ordinarily arranged.

Heretofore in that class of eyeglasses in which a spring-bow and a guard have been employed it has been usual to insert the fastening-screw from the inside end of the lens holding bracket-that is, the end adjacent to the nose of the wearer. The screw which passes through the bow, the guard, and into the bracket is very small and is subject to repeated strain, owing to the frequent movement of these parts, which it holds together, occasioned by the putting on or removal of the glasses. Various devices havebeen tried for preventing the accidental loosening or However, the screw is so small that devices of this kind are apt to prove unsatisfactory, besides to a greater or less extent disfiguring the glasses, so that the public make objection to them on various scores.

My invention consists in so fastening these parts together that when all the parts of the glasses are assembled and put in place the securing-screw is prevented from accidental displacement, owing to the new arrangement of the parts, without employing any additional or complicated part for a locking device.

In the accompanying drawings I have illustrated two of the various ways of embodying my invention.

Figure 1 is a plan view of a pair of glasses constructed in accordance with my invention, certain of the parts being shown partly in section. Fig. 2 is a cross-sectional detail View on the line a: so of Fig. 1, showing one'form of lens-holding bracket with the securingscrew in place. Fig. 3 is a similar sectiona'l detail showing a modified construction of the bracket.

a designates the usual spring-bow, which serves to connect the two lenses.

1) designates the nose-guards.

c designates the lens-holding bracket. It will be understood that it is immaterial whether the rim 0 of this bracket extends entirely around the lens or only part way, as in either case my invention is applied in exactly the same way.

The lens-holding bracket 0 is formed with a recess of a suitable size to receive the how a and the guard b. The bracket is bored from its outer endthat is, the end adjacent to the lensso as to permit the insertion of the screw d from said outer end. The securing-screw 1 passes through the aperture and through the parts a and l) and is tapped into the inner end of the said bracket. The head of said screw lies flush with the outer face of the bracket, against which the lens 0 bears. It will be understood that after the screw has been inserted and screwed up until the parts are held securely together the lens is inserted, so as to press against the rim part of the bracket. It is clear that as long as the lens remains in place the screw d cannot become displaced, as the lens presses closely against its head.

I have shown in Fig. 3 a modified form of bracket. Instead of having the recess for the reception of the guard closed on the inner end by a part of the bracket I may form an open recess at that end. In this case I employ a squared nut or head f, which has a tapped hole on its inner face to receive the end of the screw. As this nut is held be tween the jaws or flanges c of the bracket 0 it cannot turn, while, on the other hand, the screw d is held from accidentally backing out by means of the lens 6, as in the form shown in Fig. 2.

It will thus be seen that my invention is capable of various modifications. The essential feature, however, consists in the insertion of the screw from that part of the bracket which is adjacent to the lens, so that the lens serves to hold the screw in place.

2 v V v 626,536

It will be observed that while avoiding all possibility of accidentally loosening the securing-screw I do not encumber the glasses with any additional or complicated parts nor do I increase the cost of making thesame. By the arrangements that I have shown I secure absolutely reliable fastening means which are'cheap in construction and of great I simplicity and durability.

, Having thus explained the nature of the invention and described away of constructing and using the same, though without attempt- 7 ing to set forth all of the forms in which it may be made or all of the modes of its use, it is declared that what is claimed is--v '1. The combination of the lens-holding bracket, the bow and guard, the screw passing from the outer end of the bracket and holding the bow and the guard in place, said screw being held from accidentally working loose by means of the'lens, substantially as described.

2. The combination of the how, the guard, and the lens-holding bracket formed with a recess for receiving the bow and guard, said bracket being bored from its outerend, and a screwpassing through said bore and serying to hold the parts together, said screw be projecting flanges at its inner end to-receive the bow and the guard, and bored toreceive a screw at its outer end, a screw passing through said bore, a nut tapped to receive. said screw and held from turning by said flanges, and the lens resting against the head of the screw and preventing its accidental displacement.

In testimony whereof I have signed my name to this specification,in the presence of two subscribing Witnesses, this 15th day of March, A. D. 15 99.

WILLARD B. GREENE.

Vitnesses:

GEO. N. GODDARD, ARTHUR W. CRossLEY.