USRE9241E - willson - Google Patents
willson Download PDFInfo
- Publication number
- USRE9241E USRE9241E US RE9241 E USRE9241 E US RE9241E
- Authority
- US
- United States
- Prior art keywords
- temple
- eye
- plates
- willson
- pivot
- Prior art date
Links
- 238000005219 brazing Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 210000003128 Head Anatomy 0.000 description 4
- 210000001331 Nose Anatomy 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Images
Definitions
- a A are the eye-frames, B the nose -piece, D D the end pieces, and E E the temples.
- the end pieces, D instead of being made of two parts, as usual, are each composed of three plates, b, d, and 0. (Shown in the perspective view, Fig. 4.)
- the upper plate, I has two plain openings-one for the pivotpin and one for the head of the screw fthe plate d has an opening for the stem of the screw and a recess for the eye of the temple, and the plate 0 has an opening for the end of the pivot-pin and a threaded opening for the reception of the threaded end of the stem of the binding-screw.
- the plates b and d are united by brazing and secured to the upper half, 00, of the eye-frame A, and the lower plate, 0, is secured to the lower half, w',of said frame, the eye of the temple being adapted to the slot in the plate at and to the pivot-pin g, and being held in place by the plates 1) and a when the binding-screw f is inserted.
- Each of the plates b, d, and e is notched at one end for the reception of the frame A, and each plate has a projection, t, which, when the plates are secured together, form the stop for the temple.
- the binding-screw f may be dispensed with, and the three plates may be permanently secured together by brazing, the pivot-pin in this case being removed when it is desired to detach the temple.
- Each temple E is punched out of a plate of steel or other suitable metal, the blank being first made in the form shown in Fig. 5, with the usual enlarged outer end, an enlargement, m, being formed near the opposite end where there is a projecting tongue, n, which, in order to complete the temple, is bent to the condition shown in Fig. 6, the bent end, however, being unsecured, so that the eye to may be elastic and embrace the pivot-pin so tightly that it will always tend to retain the temple in any position to which it may be adjusted, the effects of wear being compensated for by the elasticity of the eye, and this elasticity preventing the joint from working loose.
- the end of the enlargement m by coming in contact with the projections i of the plates composing the end piece, serves as an additional stop for the temple.
- Theelastic eye need notnecessaril y be formed by bending around the end of the temple without securing the bent end.
- the said bent end may be secured to the body of the temple by brazing or otherwise, and the proper elasticity attained by slotting horizontally the eye thus made, as shown in Fig. 7, forming two elastic parts which do not bind upon the pin g, but upon the top and bottom plates of the end piece.
- the pin g in this case serves merely to prevent lateral or longitudinal displacement of the temple.
- a temple may be constructed much more rapidly and cheaply in' this way than if the eye is forged upon the end of the strip.
- abutment i instead of being arranged in line longitudinally with the center of the pivot g, is extended beyond said pivot, as shown in Fig. 2, so as to protect the eye of the temple and impart additional strength to the said eye and to the end piece.
- the within-described end piece composed of three plates, 1), d, and e, constructed and arranged substantially as set forth.
Family
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