US2089750A - Spectacle strap or clip - Google Patents

Description

Aug. 10, 1937. J. R. KERRY I ,SPECTACLE STRAP OR CLIP Filed Feb. 16, 1934 l lll, I

jzyerzr. ufo rz Z/rr Patented Aug. 10, 1937 UNITE STATE ,ATENT OFFIQE SPECTACLE STRAP OR CLIP Delaware Application February 16, 1934,,- Serial No. 711,596

3 Claims.

This invention relates to a spectacle strap or clip.

A primary object of the invention is to provide an improved strap or clip which is sturdy and simple in construction. A further object is to provide a method of forming a strap with substantial saving in time and material, while yet providing a sturdy and serviceable product. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in its preferred embodiments, by the accompanying drawing, in Which- Figure l is a part sectional view showing a strap embodying my invention, the section being taken as indicated at line I of Fig. 3; Fig. 2, a broken face View of a portion of a lens; Fig. 3, a sectional view, the section being taken as indicated at line 3 of Fig. 1; Fig. 4, a view similar to Fig. 1 of a modified form of the invention; Fig. 5, a view similar to Fig. 4 of a modified form of the invention; Fig. 6, a side View of a modified'form of strap embodying my invention; Fig. 7, a sectional view of the strap shown in Fig. 6, the section being taken as indicated at line 1 of Fig. 6; and Fig. 8, a sectional view of another modified form of strap.

In the illustration given in Figs. 1 to 3 inclusive, I0 designates the arm of the strap having a slotted connection portion I I. The illustration shows the strap fastened to an arm commonly known as an end-piece. The strap or clip will also be attached to the bridge or center of the rimless mounting. The arm I0 is secured by solder or other means to the U-shaped member I2.

The U-shaped member I2 preferably comprises two arc-shaped sides I3 connected at their rear by an integral rear wall I4. The rear wall It may be slightly curved, as indicated in the illus- 40 tration, or it may be substantially straight.

Preferably, the shape of the wall I4 is designed to corresponding shape with the edge portion of the lens contacting it. Secured to the inner surface of wall I 4, is an anchor strip I5, provided at 45 its ends with forwardly turned attachment lugs I6.

The edge portion of the lens I! adjacent the strip is preferably provided with spaced slots I8 adapted to receive the attachment projections I6. I also prefer to cut away a portion of the glass at I9 between the two slots to compensate for the depth of the rear wall of the anchor member I5. This results in the formation of locking shoulders 55 20 at the outer corners of the slots I8, the

shoulders 2|] being adapted to abut the outer sides of the anchor member I5.

Heretofore, straps have been provided with outwardly turned locking projections adapted to engage spaced slots in the lens. However, it has been the practice to form the projections by machine mechanism which presses the metal out of the rear wall of the U-shaped member. With such a construction, there is a tendency for the projections to yield at times when pressure is placed upon the lens so as to form a loose or weak connection. With the improved construction shown in Figs. 1 to 3, the locking shoulders 28 abut the ends of the rear wall of the anchoring member I5, and any lateral pressure is taken by the rear wall of this member rather than by the forwardly extending projections I6. At the same time, the rear wall of the anchor member I5 buttresses the wall I4 at the area where it is connected to the strap arm III.

In the modification shown in Fig. 4, the rear wall of the U-shaped member is pressed inwardly to form a recess receiving the rear wall of member I5. The arm III is secured to the rearwardly turned wall 2! within the area where it is buttressed by the rear wall of member I5.

In the modification of Fig. 5, the rear wall 22 is slotted at 23 to receive the projections I6. The rear wall of the member I5 engages the rear wall 22 and may be secured thereto by solder or other suitable means. The strap arm I0 is soldered to the member I5. In this construction, it will be observed that the combined walls I5 and 22 overlap in the area where the connection with strap arm I0 is made.

It will be noted that in the construction shown in Figs. 1 to 5, that the anchor member I5 provides a second wall at the point where connection is made with strap arm I0. With this construction, the rear wall of the U-shaped member may be made thinner because of the overlap of the two walls at the point of junction with strap arm I B. In the former practice, where the metal was drawn from the surface of the rear wall of the U-shaped member, it was necessary to provide a heavy rear wall. In applicants improved method, the rear wall may be thin because a reinforced wall is afforded by member I5 within an area near the center of the rear wall where strength is desired.

In the modification shown in Figs. 6 and 7, the arc-like face I3 has segments 24 struck inwardly to provide locking projections adapted to engage slots I 8 of lens IT. The pierced side wall may then be covered by a plate 25 having engraving thereon if desired. With this construction, the side walls l3 need not be very thick because the projections 24 utilize the entire thickness of the side wall.

In the illustration given in Fig. 8, segments 26 are struck from the rear wall 21 and a plate 28 is secured to the rear wall. Strap arm I0 may then be soldered to wall 28.

If desired, the reinforcing wall 28 and wall 25 might be omitted although I prefer to have them present as reinforcement for the weakened wall abutting them. In the operation of the clip, the lens having first been provided with spaced slots l 8, is pressed against the U-shaped member so that the projec'tior'is l6 are received within slots I8, cement being applied to form a tight connection.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

I claim:

1. In combination with a lens having a pair of spaced slots extending inwardly from its peripheral edge, a U-shaped member having sides adapted to engage the sides of said lens and having itsrear wall provided with spaced slots, an

anchor strip having forwardly turned ends ex- ,tending throughsaid slots and having its rear wall abutting and secured to the rear wall of said U-shaped member, a strap arm secured to the rear wall of said anchor strip, the projections of said strip being adapted to engage the slots of said lens, and cement between said projections and lens for securing said strap to said lens,

2. In combination with a lens having a pair of parallel spaced slots extending inwardly from its peripheral edge and having also a peripheral edge portion cut away between said slots to provide shoulders at the outer edge portions of said slots, a strap comprising an arm, a substantially U- shaped member secured to the arm, and an anchor piece secured to the inner wall of said U-shaped member and having forwardly extending parallel projections engaging the slots of said lens, the said shoulders of the lens engaging the outer ends of said anchor piece, said U-shaped member having its side flanges curved forwardly so as to provide its widest dimensions between said parallel projections, and cement between said flanges and lens for securing said strap to said lens.

3. In combination with a lens having a pair of parallel spaced slots extending horizontally inward from its peripheral edge, a substantially U-shaped member extending'about said peripheral edge, a strap comprising an arm secured to said U-shaped member, a non-resilient anchor piece secured to the wall of said U-shaped member and having its ends parallel and projecting horizontally within the slots of said lens, said U- shaped member having its side flanges curved inwardly to provide sides having their widest di-' mensions between said parallel projections, and cement extending about said anchor piece and said U-shaped member for securing said strap to said lens, said strap being held against horizontal displacement from said lens only by the adhesive qualities of said cement.

JOHN R. KERRY.

Images