US2811896A

US2811896A - Ophthalmic mounting

Info

Publication number: US2811896A
Application number: US384064A
Authority: US
Inventors: Frank W Lindblom
Original assignee: Welsh Manufacturing Co
Current assignee: Welsh Manufacturing Co
Priority date: 1953-10-05
Filing date: 1953-10-05
Publication date: 1957-11-05
Anticipated expiration: 1974-11-05

Description

Nov. 5, 1957 F. w. LINDBLOM OPHTHALMIC MOUNTING Filed Oct. 5, 1953 United States Patent Ollice 2,811,896 Patented Nov. 5, 1957 oPnTHALMIc MoUNTlNG Frank W. Lindblom, Warwick, R. I., assignor to Welsh Manufacturing Company, a corporation of Rhode Island Application October S, 1953, Serial No. 384,064

1 Claim. (Cl. 88-47) This invention relates to an ophthalmic mounting and more particularly to the manner of positioning the lens in the frame which contains it.

Lenses have been variously mounted for removal and their replacement usually by means of a threaded lug and a screw for drawing up the frame and holding it in position. In the less expensive frames, some other means have at times been provided for securing the lens in position.

One of the objects of this invention is to provide a simple and inexpensive construction for securing the lens in position without the use of screw threads or screws.

Another object of the invention is to provide the securing means as integral with the two-part frame so that by mere manipulation of one of the parts, the two parts may be secured together.

Another object of the invention is to provide a combination non-metallic and metallic frame for a lens with the metallic parts bendable for securing the two parts together.

Another object of the invention is to so conceal the attachment means that it is substantially hidden when the frame is Worn.

Another object of the invention is to provide one of the members of a molded construction with all of the recesses and openings therein so that no operation need be performed after the member is removed from the mold.

With these and other objects in View, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claim.

In the accompanying drawings:

Figure 1 is a front elevation partly in section showing the invention;

Figure 2 is a central sectional view through the two members of the lens frame;

Figure 3 is a perspective view of the lower member of the lens frame;

Figure 4 is a sectional view of the structure shown in Figure 2 bent into the shape it will assume just prior to assembly with its companion member;

lFigure 5 is a sectional view of a fragmental portion of the non-metallic member of the frame prior to assembly with the other part of the frame or with the lens mounted inposition;

Figure 6 is a sectional view on line 6-6 of Figure 2.

In proceeding with this invention, I mold a brow bar which forms one of the upper part of the two rim members of the frame from a non-metallic material with the groove for the lens and such securing openings as is desired in the brow bar. The other lower member of each of the rims is of metal and is grooved to receive the lens and is provided at its ends with lingers which may pass through the openings in the non-metallic frame member so that the fingers may be bent to hold the lower part of the rim in place. Recesses are provided for receiving the ngers that they may lie lush with the outer surface of the frame. l

With reference to the drawings, 10 designates generally a brow bar which forms the upper member 11-11 of each of the lens rims, there being lenses as at 12-12 in the frame. The lower part of the frame is a metal portion 13-13 which is secured to the upper member 11 as will be more fully described.

The brow bar providing the two upper members 11 of the frame is of -a molded construction so that each of the members 11 is integral with the bridge 14 which extends between the members 11, while extending downwardly from the bridge there is formed the nasal portion 15 of the rim from which there extends rearwardly and as one integral piece therewith nose pads for resting on the nose of the wearer. A groove 16 exends along the under side of each of the rim members 11 and nasal portion 15 for the reception of the lens 12. At the nasal portion of this member 11 there is provided an opening 17 which extends horizontally through the nasal portion 15 of the non-metallic member, and there is also formed at the outer portion of this opening a recess 18 which extends from the opening upwardly, as shown in Figures extend outwardly having openings 20 therein for mounting the temple hinge 21 for the temple 22 in position, which temples may have ear-engaging portions 23 at their extremities. Also adjacent the temple ends of the members 11 there is an opening 24 which extends upwardly through the member 11 with a recess 25 adjoining this opening and extending inwardly at the upper part of the rim member 11.

The lower portion of the rim is designated 26 and shown by itself in Figures 3 and 4. This rim member is formed of metal and is grooved as at 27 for the reception of the lens 12, while at its ends there are

ngers

28 and 29 extending beyond thegroove of the member. The member 26 is tirst formed as shown in Figure 3 and is then bent to the shape shown in Figure 4 with the linger 28 extending generally radially outwardly from the curvedv formation, while the linger 29 is left substantially in its original position in the plane of the stock of the back of the groove or channel member.

To assemble the lens in the frame, the linger 28 is positioned through the opening v17 in the member 11 and bent along its portion 30 (Figure l) into the recess 18. The lens is then positioned with its edge in the groove 27 and. then the linger 29 is positioned through the opening 24 and drawn up to press the lens against the member 11 and then bent as at 31 (see Figure l) so that this portion 31 lies in the recess 25 adjacent the opening 24. The lens is in this marmer locked in position without need for any additional parts. The operation is simple and inexpensive. By recessing the frame for the reception of the ngers, they lie snugly within this recessed part and no protruding portions extend beyond the frame to catch in clothing or abrade the flesh of the wearer.

I claim:

In an ophthalmic mounting a lens rim formed of two members, `one member being formed of non-metallic material arched to extend along the upper portions of the lens having depending nasal and temple portions and provided with an opening through the nasal portion in a direction generally radial from the lens center and an opening through the temple portion of the member generally perpendicular to the direction of the opening through the nasal portion and located near the temple connection, abutment surfaces adjacent each opening at the inner surface of the rim member and a recess in the outer surface of the rim member adjoining each opening, and the other member being formed of metal channel shape in cross section with the end of the side walls of the ychannel engaging said abutment surfaces and at bendable ngers extending only from the bridge 0f the channel passing through said openings and bent over the marginal portions of the openings to an extent greater 5 than the diameter of the openings and located in said recesses to lock the members together, said fingers being substantially the thickness of the depth of said recess to proyide the outer surface of the ngers substantially flush with the outer surface of the non-metallic n'm member. 10

UNITED STATES PATENTS Herrick Sept. 23, 1919 Chappell July 25, 1950 Rohrbach May 21, 1951 Rooney July 22, 1952 McNeill Mar. 17, 1953 FOREIGN PATENTS Great Britain Apr. 8, 1953