US1219433A - Eyeglasses. - Google Patents

Description

J. H. BROWN.

EYEGLASSES.

APPLlcATloN man MAY s. m5.

1,21 9,433. Patented Mar. 20, 1917.

' A'TroHA/Er EiTB STATES PATENT FFQE.

JAMES HOYT BROWN, OF NEVJ YORK, N. Y.

EYEGLASSES.

Specification of Letters Patent.

Patented Mar. 20, 1917..

Application filed May 5, 1915. Serial No. 25,989.

There are a number of diiiiculties to be f overcome in securing eye glass mountings to the lens.

These difficulties are, first, to fit the mounting accurately and closely to the lens, and second, to hold or secure the mounting so tightly and permanently to the lens that it will not work loose while in use.

The rst difficulty above mentioned arises from the fact that lens and mountings are subject to certain variations in size and arrangement which are apt to produce difficulty in making a close connection between them, and the second difficulty arises from the fact that the types and arrangements of mountings heretofore employed are apt to work loose even when tightly adjusted in the first place, and this loosening action is intensified if for any reason the initial adjustment of themounting to the lens' is not perfect.

rlhe present invention is intended to overcome the foregoing diiiculties by providing, lirst, an accurate, and second, a strong and lasting, connection between the lens and the mounting.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the particular embodiment of invention herein disclosed can be made within the scope of what is claimed, and as indicated by the variations in the claims, without departing from the spirit of the invention.

In the accompanying drawing forming part of this specification:

Figure 1 is a view in elevation of a pair of spectacles equipped with the present invention.

Fig. 2 an enlarged. sectional view through one of the mountings and lens showinO the lens in an edgewise section.

lig. 8 is a view in elevation of one of the mountings, looking in the same direction as in Fig. 2, the lens being omitted.

Fig. 4 is a view of a fragment of a lens with a mounting applied thereto, the straps or shoe ofthe mounting being omitted.

Like reference numerals indicate corresponding parts in the different gures of thel drawing.

The lens of the eye glasses are indicated by the numerals 1 1. The bridge piece is indicated by 2. The temples or ear pieces are indicated by 3. The mountings by means of which the lens, bridge and temples are secured together are indicated by 4.

Each lens l is slotted as indicated at 5, in any suitable manner, to receive the mounting 4.

Each mounting 4 is constructed prefer? ably with a stud or body portion 6 to which either the bridge 2 or the temple 3 is connected according to whether it is a bridge cr an end piece mounting.

Each mounting 4 is formed with a pair of lens-engaging ears 7 7 which engage opposite sides of the lens adjacent the slot 5. The ears 7 may be of any suitable shape and are of a size wider than the slot 5 so as to be capable of being clamped in frictional engagement with opposite faces of the lens adjacent the slot.

For the purpose of securing the ears 7 7 against the lens and of holding them in position thereon l prefer to employ either a screw 8 shown in Fig. 2 or a rivet 9 as shown in Fig. 3. The screw or rivet extends Vthrough the ears and slot 5 in the lens. The

screw or rivet is usually applied to the mounting and in securing the mounting to the lens it is only necessary to push the mounting endwise onto the lens, the screw or rivet thus traversing the slot after which the screw is tightened or the rivet is upset so as to clamp the ears 7 tightly in frictional engagement with the lens.

For the purpose of holding the mounting in line with the slot and preventing its m0ving on the screw 7 as a pivot, reliance may be placed on either the projections l0 10 arranged on the inner faces of the ears 7 and fitting into the slot 5, or on the straps 11 l1 of the mounting which engage the edge of the lens, and in connection with the lli) ' and I make the engagement positive with soT . ustment of the ears 7 7 to diferentshapes or thicknesses of lens, the inner faces of the ears adjacent the-body portion 6 are vhollowed out or slightly rounded and narrowed as indicated at 12, for the purpose of avoiding square corners, with the result that, by means of pliers, the ears can be readily shaped or pressed into close engagement with any type of lens.

The frictionalengagement of the ears 17 with the lens l is'not sufficient in itself to produce a tight and permanent connection,

the use of gritty particlessuch as emery, diamond'dust or the like to be'introduced between the ears 7 andthe lens. When the ears are drawn tight 1against K' the llens the powdered vemery -is embedded inthe ears and the lens and forms a vnon-slip zgripV on the lens.

The emery or light Vgritty/'particles may be used either alone or in combination-with a suitable binder; such as shellac orliquid self-hardening cement; ltoenablethe particles to be handled and applied to the lens mounting tobetteradvantage. Of course, the effect of the gritty particlesl is thefsame, whether they are used alone or in abi-nder, or cemented as stated.

As before stated, in somecases I may rely on the lstraps llvto ycooperate withl the friction. grip ofthe ears and to hold the mounting against swinging movement on the-screw, and" in this caseImay sometimes omit the projectionsl 10,- but-I sometimes employ both'the strapsfand projections, and I really prefer to omit thestraps as shown in Fig. 4, and yrely entirely on the projections with emery, etc., -between the lens and mounting.

A very important advantage to be secured in providing a construction such as shown in'Fig. 4 in which'it isrpossible to dispense with the strapsll is-thatfI lam enabledito employ very large lens inthe glasses'when desired. There is an increasing demand for large lens, but'the use of straps results: infan increase in the total length of `the/bridge piece and bridge mountings'and avconsequent widening of the Lpupilarydistance between'the eyes making necessary the-use of relatively small'lens. tIn Jmy kconstruction in which I canV dispense-with the-straps yand shorten the mounting'Iiam enabled to -narrow thel pupilar distance l to a l lminimum and thus'permit the vuse of larger lens.

"It is also tof be vnoted from Fig. 2iv that I "tionallengagement':between said parts.

preferably space the projections l() from each other to provide a gap therebetween. This enables me to adjust the ears toward each other-in ii-tting narrow or thin lenses,

ijustmentl ofthe' ears would be interfered with or prevented.

t is needless.to-saythat: the dispensing withl the strapslland the shortening of the lstuds results -in a great economy iny precious metals and cost ofy manufacture.

eMoreover, as ausually manufactured the fstraps'and ears are'made in one piece, andV the stud 6 is soldered thereto and the entire mounting is then hardened to give the necessary stiffness tothe straps. rBhis hardening of the mounting :to vstiften the straps results usually inf too much-hardening-of the ears, vwhich 'are consequentlyflia-ble to beb'rittle sand break in attempting to `re-shapeI theears to fit different sizes of lens. In my construction 'wherein the straps can be dispensed with, the ymounting can be made in one piece, orl inE the usual way, if desired, andas-there =are no'straps'to be sti-ffened, with my;y form of mounting a1 more soft and' `pliable `metal can 'be'l employed, with 'the `-result that the fsprinkle a small quantity ofdiamond dust, powdered emery or other non-slipsubstance around the socket of the head ofthescrew 8 beforeiturning such screwlhome. Irind that such 'dust -serves lto :lock the screw -against loosening movement.

What is claimed as new is: `1. Thecombination offa lens, a mounting,

emery "dust or "like gritty material inter- -rposed'between -and engaging said lens and 'mounting to resist slipping.

2. The combination of a lens, a mounting, and gritty particlesvbetween theflens and f mounting? to provide frictional engagement between the said parts.

`3. The combination of a lens, amounting having ears to receive the lens between them, means Y.for causing the ears to holdtheilens,

and gritty particles between the ears-and the opposite faces of the lens to provide Vfric-IV si. The combination of a lens having an open-ended recess in its edge, a mounting comprising ears to receive the lens between them, a tightening element carried by the ears to cause the ears to hold the lens, one or more projections carried by the mounting 1n line with said element and adapted to be inserted with said element into said openended recess, and gritty material between the ears and the opposite faces of the lens, whereby, when the tightening element is op erated, the lens and the mounting will be held together and the lens prevented from turning about said element as a pivot.

5, The combination of a lens having an open ended recess in its edge, a mounting comprising ears to receive the lens between the1n,a tightening element carried by the ears to cause the ears to hold the lens, and

one or more. projections carried by the mounting in line with said element and adapted to be inserted with said element in said open ended recess and it said recess snugly, whereby, when the tightening element is operated, the lens and mounting will be held together and the lens prevented from turning about said element as a pivot.

Signed at New York in the county of New York, and State of New York this 4th day of May A. D. 1915.

JAMES HOYT BROWN. Witnesses:

JAMES A. PALMER, CHARLES M. STOENER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G.

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