US833493A - Lens-mounting for eyeglasses. - Google Patents

Description

PATENTED 00116; 1906.

No. 833,493 I R. VAN TASSEL. LENS MOUNTING FOR EYEGLASSES.

APPLICATION FILED IEEIB. 6. 1906.

(A TTUEWEK IINITED sTATEs PATENT oEEIoE.

JOHN R. vAN TAss'EL. OF GENEVA, NEW YORK, ASSIGNOR TO THE STANDARD OPTICAL COMPANY PORATION OF NEW YORK.

, OF GENEVA, NEW YORK, A COR- LENS-MOUNTING. FOR EYEGLASSES.

Application filed February 6,

To aZZ whom, it may concern.-

Be it known that I, JOHN R. VAN TAssEL, of Geneva, in the county of Ontario, in the State of NewYork, have invented new and useful Improvements in Lens-Mountings for Eyeglasses, .of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in lens-mountings, and relates more particularly to the manner of clamping the end of the bow and nose-guard in the box or post. Various devices have been employed for this purpose; but in all of those with which I am familiar either the head of the clampings'crew projects beyond the surface of the in ner face of the box, causing more or less irritation of the nose, or else the inner side of the box is recessed, leaving ledges for the accumulation of dust and dirt, thereby rendering the mounting more or less unsanitary, or, as sometimes occurs, the screw-head is driven completely through the inner face of the box and becomes wedged in so that it cannot be removed without marring the box.

The object of my invention is to make the inner face of the box or post substantially smooth and coincident with the face of the clamping-screw and to provide the inner side of the box with a tapering opening in which a screw having a tapering head is fitted, thereby avoiding any recesses or ledges around the head of the screw.

A further object is to clamp the adjacent ends of the bow and nose guard between the inner side of the box and a threaded sleeve or nut having an elongated hub seated in the aperture or socket in the post,'so as to afford a comparatively long threaded bearing for the screw and at the same time enable the head of the screw to always remain in a plane coincident with the inner face of the box.

Other objects and uses will appear in the following description.

In the drawings, ,Fi 'ure 1 is a face view of a pair of eyeglasses an my improved mounting therefor. Fig. 2 is an enlarged elevation of one of the mountings and adjacent portion of one. of the lenses. Fig. 3 is a sectional view taken on line 3 3, Fig. 2.

In carrying out the objects stated each lens is clamped to a suitable post' 1, which in this instance has a pair of ears 2, between Specification ofLetters Patent.

Patented Oct. 16, i906. 1906. Serial No. 299,693.

which the lens is clamped by a suitable screw 3. The inner end of each post is provided with a rectangular box 4, having a vertical opening therethrough for receiving the adjacent ends of the bow 5 and nose-guard 6, and also a suitable clampin -plate 7. This clamping-plate 7 is provide with a central )0 tubular hub 8, which fits in a pocket 9 centrally in the post 1 and opening from the base of the box 4. The plate 7 and its hub 8 constitute a clamping-sleeve which is formed with a central threaded aperture 10 for receiv- 6 5 ing the threaded end of a screw 1 1. The width of the vertical opening, as 4,'in the box 4 is somewhat greater than the combined thicknesses of the adjacent end of the bow 5, noseuard 6, and clamping-plate 7, because it is ound that these last-named parts vary in thickness, and the opening 4 is therefore made large enough to easily receive those of greatest thickness.

It is obvious from the foregoing description that the box 4 has four sides inclosin the opening 4, the socket 9 being formed in the side nearest the lens and extendin some distance into the post proper toward said lens, while the inner face of the box is formed with a tapering annular seat or opening 12 for receiving a similarly-taperin head 13 of the screw 11. This tapering hea 13 of the screw is made to exactly fit 1n the opening 12, and its outer surface is coincident with 8 5 the adjacent surface of the box 4, so as to make the side of the box adjacent to the nose perfectly smooth and free from led es, thereby reducing the liability of the 10 gment of dust and other unsanitary matter. The clamping-sleeve,comprising the plate 7 and its hub 8, is first forced under the pressure into the opening 4 and socket 9 and is then tapped with a threaded opening -10, but is free to move axially in said openin and socket. 5 The hub 8 of the plate 7 is pre erably of considerable length as compared with the combined thickness of the parts 5, 6, and 7, so as to afford a long threaded bearing for the screw 11 which is passed through apertures :00 in the parts 5 and 6.

In assembling the parts of my improved mounting the clam ing-sleeve, comprising the plate7 and its hu 8, is inserted into operative position, with the hub 8 playing in the 10 5 socket 9 and the plate 7 loosely fitting in the opening 4. The adjacent ends of the bow 5 and nose-guard 6 areinserted through the opposite open ends of the box, so as to lap one uponthe other within said box until their screw-openings are alined with each other and with the central threaded socket 10 in the clamping-sleeve, whereupon the screw 1 1 is inserted through said apertures and engaged With the threaded socket 10 until the head 13 is firmly seated in its tapering socket 12, thereby drawing the plate 7 firmly against the outer face of the part 5 and clamping the parts 5 and 6 together against the side of'the box 4. By the use of this sleeve I not only obtain a long bearing for the threaded end of the clamping-bolt and also retain the inner surface of the bolt-head 13 coincident with the adjacent face of the box4 for varying thicknesses of the. parts 5 and 6, but "I am also enabled to make a closer thread fit be tween the bolt and sleeve,'ar"1d if'the threads 1 of the sleeve should become stripped it is only necessary to replace it by a new one without throwing away the entire post or main body of the mounting. Another important feature in the use of the clamping-plate 7 at the lens side of the members 5 and 6 is that it gives a broad fiat bearing against the adj acent member 5, which affords greater rigidity in holding said parts 5 and 6 in the box 4 to prevent relative movement therein, as distinguished from the usual way of allowing the head of the clamping-bolt to engage the .member 6 and force the member 5 against the opposite side of the box. In other words, in the present instance the clamping area is practically coextensive with the dimensions of one side of the box, whereas if only the head of the bolt engaged the member 6 the clamp ing area would be materially reduced and tend to work the screw sufficiently loose to allow the parts to get out of place.

What I claim is 1. A lens-mounting for eyeglasses comprising a post having a lens-clamp at one end and a box on its opposite end, said post having a socket opening into the box, a clamping-plate fitted into the socket and provided with a threaded aperture and a screw having a head fitted in the inner side of the box and engaged with the threaded aperture of the clamping-plate.

2. v A lens-mounting comprising a post hav- 1 ing a box and a socket opening into the box,

a clamping-plate having a threaded tubular hub slidable in the socket and a screw having a head engaged with the opposite side of the box, and its opposite end threaded and engaged in the threaded portion of the hub.

3. A lens-mounting com rising a post having at one end a rectangufar opening and a socket leading laterally from said opening toward the lens, a hub playing in the socket and provided with a rectangular head fitted in the opening, said head and hub having a central threaded aperture, a bow and a nose-piece each having one end inserted in the opening between the clamping-head and the inner face of the box, and a screw passed through the adjacent ends of the bow and nose-piece and having one end threaded and engaged with the threaded aperture in the hub, and its opposite end engaged with the inner face of the 4. A lensmounting comprising a rectangular box having a vertical opening therethrough, the inner side of the box having an aperture and the opposite side of the box having a socket, a sliding clamping member fitted in the socket and provided with a threaded aperture, and a screw having one end threaded and engaged with said threaded aperture of the clamping member and its other end provided with a head fitted in the aperture of the adjacent side of the box, the inner face of the screw being disposed in a plane coincident with the inner face of the box.

5. A lens-mounting comprising a post having a lens-clamping device at one end and a rectangular box on its other end, said 0st having a central socket opening into the ox, a clamping-plate having a sliding fit in the box and provided with a hub fitted in the socket, said hub and plate being formed with a central threaded socket, a screw engaged with said socket and having a head fitted in the opposite side of the box, the inner face of the head being flush with the adjacent face of the box. v

6. A lens-mounting comprising a post having a lens-clamping device on one end and a rectangular box on its opposite end, said post having a socket opening into the box and the box having its inner side formed with a tapering aperture, a clamping-plate loosely fitting in the box and provided with a hub loosely fitted in the socket, said clampingplate and its hub being formed with a threaded opening, and a screw engaged with the threaded opening of the clamping-plate and hub and provided with a tapering head fitted in the tapering aperture in the box, the iimer face of the screw being flush with the inner face of the box.

In witness whereof I have hereunto set my hand this 2d day of February, 1906.

JOHN R. VAN TASSELQ ICC

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