US2244926A - Ophthalmic lens and mounting - Google Patents

Description

June10, 1941. R UHLEMANN 2,244,926

OPHTHALMIC LENS AND MOUNTING Filed May 13, 1939 Patented June 10, 1941 UNITED STATES PATENT OFFICER- 2,244,926 OPHTHALMIC LENS AND MOUNTING Richard H. Uhlemann, Antioch, 111., assignor to Uhlemann Optical 00. of Illinois, Chicago, 111., a corporation of Delaware Application May 13, 1939, Serial No. 273,576

6 Claims.

My invention relates to an ophthalmic lens and mounting.

One of the objects of my invention is to provide an improved ophthalmic lens provided with means for connection with a strap in which a .minimum weakening of the edge of the lens is provided.

A further object is to provide such a, construction in which means are provided to prevent both radial and edge relative slipping between the lens and mounting.

A further object is to provide such a construction in which the connection is effected by providing a facial or surface groove in the lens.

A further object is to provide such a construction in which a connection is effected between the lens and strap by means of a rod or pin slidable into a groove in the surface of the lens.

A further object is to provide such a construction in which a connection is effected by means of two nonparallel grooves.

A further object is to provide such a construction in which the connection is efiected by grooves on opposite surfaces of the lens. Y

A further object is to provide a lens and mounting which may be connected without the use of screws, solder, or similar means, and in which the lens and mounting will be held against both radial and side slip.

A further object is to provide such a construction which will hold the parts securely connected without danger of breakage.

A further object is to provide such a construction which will be simple and inexpensive to make and which can be assembled without. the use of highly skilled mechanics.

Further objects and advantages of the invention will be apparent from the description and claims.

In the drawing, in which several forms of my invention are shown a Figure 1 is a face view of .a lens and portions of the mountin Fig. 2 is a section on the line 2-2 of Figure 1;

Fig. 3 is a face view of a portion of the lens;

Fig. 4 is a view of the blank from which the strap is formed;

Fig. 5 is an exploded view showing 'the'strap and connecting pin;

Fig. 6 is a perspective view showing a spool having wire mounted thereon used in making the connecting pins or rods;

Fig. '7 is an exploded view of another form showing a face view of an edge of the lens and a face view of the blank from which the strap is formed;

Fig. 8 is an exploded view similar to Fig. 7 showing another form;

Fig. 9 is an exploded view similar to Fig. 8 showing another form;

Fig, 10 is a face view of another form showing a portion of the lens and strap;

Fig. 11 is a section on the line I l--| l of Fig. 10;

Fig. 12 is a face View of the strap blank;

Fig. 13 is a face view of a lens and strap showing another form;

Fig. 14 is a section on the line I l-l4 of'Fig. 13;

Fig. 15 is a face view of the strap blank of Fig. 13;

Fig. 16 is a face view of a lens and strap showing another form;

Fig. 17 is a section on the line I'|ll of Fig.

16; and

Fig. 18 is a sectional view of another form of mounting.

Referring to the drawing in detail and first t Figs. 1 to 5, inclusive, the construction shown comprises an ophthalmic lens I, a strap 2 to which the lens is secured, a nose-guard 3 mounted on the strap, a temple-supporting wire 4 mounted on the strap, and a portion of the bridge 5 secured to the strap.

In order to secure this lens to a strap, grooves 6 and 1 are provided in opposite faces of the .lens by means of any suitable apparatus such as a grinding wheel or the point of a drill. The strap is formed with an inwardly-extending bead 8 on one of its flanges and an inwardly-facing channel 9 on the other flange; the inwardly-extending bead 8 is brought into registration with the groove 6 on one face of the lens, and the strap is shifted to bring the bead 8 into the groove 6. This movement is possible since, as shown in Fig. 3, the groove 6 is open at the edge of the lens. This action brings the groove 9 on the opposite flange into registration with the groove 1 on the opposite face of the lens. The rod or pin 10 is then slipped into place in the space provided by the groove 9 in the strap and the registering groove 1 in the lens. The entrance to the groove in the strap adjacent one end of the groove may be flared somewhat at II so as to facilitate the entrance of the pin. The pin 10 may be of somewhat flexible material, such as wire, about one millimeter in diameter, to further facilitate this entrance. The pin may be formed simply by breaking oif a piece from the end of a wire which may be coiled up on a spool, the wire being provided with suitably spaced weakened points to tion, due to the nonparallel arrangement of the grooves on opposite sides of the lens, the lens and strap will be held against separation, either by a relative slip movement edgewise between the lens edge and strap or by a movement of the strap away from the center of the lens. It will also be seen that the lens is only slightly weakened since the grooves are in the surface of the 7 lens and are in practice only .014" deep.

Fig. 4, which shows the blank from which the strap is formed, shows the relative arrangement of the groove and bead in the'wing or .dangev por tions of the strap, the strap being bent'along the dotted lines l2 to bring it into shown in Fig. 5.

The construction shown in Fig. 7 is similar to that just described except that here provision the shape is made for the insertion of wires on both surfaces of the lens I.

In this form it is not necessary to have either of the nonparallel grooves 6 or I run clear to the edge of the lens as the wires can be inserted into the space provided by the, registering opposing grooves on lens and strapwithout extending the grooves in the lens clear out to the edge. In this form both wings or flanges of the strap are provided with grooves l3 on the inner faces of the flange.

. The construction shown in Fig. 8 is an exploded view similar to Fig. 7 except that here the registering'grooves I4 and [5 in the lens and the cor responding grooves l6 and H in the strap are curvilinear, one groove being provided on each surface of the lens. The grooves I4 and I5 may be so positioned as not to be opposite each other, thus providing a minimum weakening of the lens.

The construction shown in Fig. 9 is similar to that ,shownin Fig. 8 except that here the grooves l8 and [9 in the lens which cooperate with the grooves and 2| in the strap are rectilinear. The construction shown in Figs 10, 11, and 12;i-s similar to that just described except that here the edgewise slip between lens and strap is prevented by means of a tongue 22, pressed inwardly from the back of the strap, which enters a notch 23 in the edge of the lens.

In all of the forms a cementitious material may be placed between the opposing surfaces of the strap and lens to hold the parts against any slip whatever.

The construction shown in Figs. 13, 14, and 15 is in general similar to that shown in Figs. 10, l1, and 12 except that here edgewise slip is prevented by means of aradially extending groove 23a in thelens which cooperates with a radiallyand inwardly-extending bead 24 in the flange of the strap. i The strap is held against movement away from the lens by means of the piece of j wire l0 inserted into the registering grooves in the lens face and strap flange. The jaws of the strap may be tapered incross-sec-tion to give strength where needed.

. The construction shown in Figs. 16 and 1'7 is similar to that shown in Figs'lil, 11, and 12' except that here the strap 2 is held against movement away from the lens I by means of a metal ball 25 which may he slipped into the entrance provided by the registering. grooves in the lens and strap. I

g The construction shown in Fig. 18 is similar to those previously described except that here the facial groove 26 adjacent the edge of the lens be struck up from the material of the strap 2. In this form the cementitious material is applied to the edge of the lens and mounting, and the strap is slipped into place over the edge of the lens, the tongue 21 snapping down into the groove 26. In removing this, a sharp instrument may be inserted underneath the spring tongue 21 to enable this tongue to be pried outwardly to free it from the groove 26.

It will be seen. that in all of these forms a facial groove is provided in at least one face of the lens for cooperation with securing means for holding the strap and lens in place,

Further modificationswill be apparent to those skilled in the art and it is desired, therefore,

thatth'e invention be limited only by the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. An ophthalmic lens having an elongated facial groove adjacent an edge thereof extending along the face of the lens at an oblique angle to the adjacent portion of the edge of the lens, a clip adjacent an edge of the lens having a securing portion provided with an elongated groove opposite and registering with the elongated groove in the lens, and longitudinally movable retaining means lying in said elongated grooves insertable by movement longtudinally of the grooves when the clip is in position on the lens.

2. An ophthalmic lens having an elongated facial groove adjacent an edge thereof extending along the face of the lens nonparallel to an adjacent portion of the edge of the lens, a clip adjacent an edge of the lens having a securing portion provided with an elongated groove opposite and registering with the elongated groove in the lens, and longitudinally movable retaining means lying in said elongated grooves insertable by movement longitudinally of the grooves when the clip is in position on the lens.

cooperates with a spring tongue 27 which may 3. An ophthalmic lens having elongated facial grooves adjacent an edge thereof each extending along a face of the lens, said grooves extending at an oblique angle to each other, mounting means adjacent an edge of the lens having securing portions provided with elongated grooves opposite and registering with the elongated grooves in the lens, and elongated remove.- bl-e retaining means lying in said elongated grooves insertable by movement longitudinally of the grooves when the securing portions are in position on the lens, one pair of registering grooves being nonparallel t0 the adjacent portion of the edge of the lens.

4. An ophthalmic lens having an elongated facial groove adjacent an edge thereof extending along the face of the lens at an oblique angle to the adjacent edgeof the lens, a clip adjacent an edge of the lens having a securing portion provided with an elongated groove opposite and registering with the elongated groove in the lens, and longitudinally movable retaining means 1y ing in said elongated grooves insertable by movement longitudinally of the grooves when the clip is in position on the lens, said lens having a rece'ss opening .at an edge thereof and said clip having a projection for entering said recess at its edge opening along a line oblique to the edge.

edge of the lens having a securing portion provided with an elongated groove opposite and registering with the elongated groove in the lens, and longitudinally movable retaining means lying in said elongated grooves insertable by movement longitudinally of the grooves when the clip is in position on the lens, said lens having a recess opening at an edge thereof and said clip having a projection for entering said recess at its edge opening along a line oblique to the edge of the lens to hold the clip against slipping edgewise of the lens, said facial groove and recess having portions lying in a common radial plane perpendicular to a lens face.

6. An ophthalmic lens having an elongated facial groove adjacent an edge thereof extending along the face of the lens, a clip adjacent an edge of the lens having a securing portion provided with an elongated groove opposite and registering with the elongated groove in the lens, and a longitudinally movable retaining pin lying in said elongated grooves, the said grooves having entrance openings large enough to enable the endwise insertion of the pin into the groove when the clip is in position on the lens, said lens 10 having a recess opening at an edge thereof and said clip having a projection for entering said recess at its edge opening along a line oblique to the edge of the lens to hold the clip against slipping edgewise of the lens, said oblique line be- RICHARD H. UHLEMANN.

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