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Publication numberUSRE4065 E
Publication typeGrant
Publication dateJul 12, 1870
Publication numberUS RE4065 E, US RE4065E, US-E-RE4065, USRE4065 E, USRE4065E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
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US RE4065 E
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Description  (OCR text may contain errors)

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g Huit-eri gister @anni 69Min.

Linus BLACK, or DETROIT, MICHIGAN.

Letters No. 96,387, November 2, 1869;

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To el when it slay concern:

B e itknown that I, Louis Buck, of Detroit, in the eonntyof Wsysesnd Beste ot Michigan, have inf rented s new and nselhilrnprorement in Spectacles; und I do hereby declare that the following is a full, clear, Ind exact description thereof, which will enshle other! skilled in the srt to mnke 'nud use the same, rehenes being had to the accompanying drnwing forming port of this specillcation.

This invention relatos to new and useful improve'- lnents in spectacles, where it is desired to change the gli Ihr lending und other purposes; and

The invention cimsists in the construction of cortsin perte, ss hereinafter more fully described.

ln the seemnponying drnwing- Figure 1 represents s frontv ew of spectacles, ccnltrueted sccordlng tc my invention. i NUN, 5l is s top viewof the snmc.

Figure B is nsectio'nsl iront view ci' spectacles, with attached to the how hy n forked conr on.

.The other llgures in tho drawing represent details lthe construction, which will be herener referred Similar letten of referenceinrlicutemrreslmnding 1" t" l A represents the bows; f B,thencsepiece; andV 0 0the shenkl, to which the temples l) me nt- My oldeeth to construct spectxcles and oye-glnsses inmsnch n manner that the glasses may he changed :it w

Theiklnsscs und fnunes, or bop's, being inode of one lise, cnn be changed quickly and securely, without the use of a screw-driver or any other tool. For this purpose I constmcttlie shanks C C in two parte. These portssre marked d and e. v .y i is the large part, hearing the hinge by which the tern les nre connected. f

part ispotched or eluted to receive the end ofthe parte, the nmrrgctnmrt or-ing plainly-seeminthorierrgilgeasndt v To prevent thevports i'rmn slippi or getting out of place, I provile n dovrel-piu, u'hic 'is fixed to ons pmt, and enters n hole in the other part, as indicated in dotted lines in the drawing.

Fig. 1 represents the shsnlrs, secured together 'by hinged box-clssps f, seen in Fiignres 5 and (i, the re verse sides of the clnsp heingown in the two iignres.

These clasps nre hinged to the lnrge pan l of the shnnks, hy the hinge-rivets of the tempies' D, and may be Macedeither ou the' outside or inside of the slmnk. When they are closed dorm over the shank,

no represented in the drarrlig, the parts'ot' the shnnks position are iirmly heid in the desi Figure 7 is n detail of the shank, wltliont :my msten ng.

In tlg. 3 the nose-piece' is attacked to the how A by a forked connection, the how being reversed with the fork, ss seen at This arrangement allows of slight variations ,in the size of the bows, to snitA the vsrying sizes.

The bows need not be reversed, as seen inthe drawing, unless s variation iu the size is necessary.

I do not coniine myself exclusively to hinging the clasp f .to the shank, nerepresented. It muy beconnected with the temple, so ns to hold the parts of the ,shank together, without any permanent attachment to the shank.

l The advantage of myhinged clasp over n socketl und spring, is that, in the latter device, one of the parts is apt to drop while the two am being detached.

This cannot take place in my clasp.

Again, the tension of a, small spring 4is easily im, paired and varied hy many enuses.l This creates n loose nud rickety tit of the parts. This dilliculty is also ohviated entirely hy my improvement, since its notion is positive, uniform, and not lin'ble to be inlincneed by extraneous causes.

Having thus described my invention,

v Ifclsim as new und desire to secure hy Letters Patent- 1. The how A, open ot both ends, but held st the innert? branches on the nose-piece B, ns shown in lig. 3 drawing. i

2. The hinged clospjconstructod ne shown in 5 sud of drawing,coruhined with'a shank form in two parts, ns and for the purpose specified.

- DOUIS BLACK.

Witnesses: