US1668283A - Magnifier - Google Patents

Description

May 1, 1928.

' 1,668,283 DDH. OMEARA HAGNIFIER Filed Sept. 25. 1 24 wimf ii 13B? nigNiflE-NToR.

i as shown in Figure 4;i-

Patented May 1, 1928.

UNITED STATES. PATENT OFFICE; Dams HENJRQY da e, or nE'rnoIr, mronronn, nssrenon. T0 nmnaroan orrroan H CQMPANY, or soo'rnnnrnon, mssacnusnrrs, A VOLUNTARY nssocrarron or nassnonvsarrs ---app11majnne September 25, 1924. Serial no. 739,862. I

This invention relates to improvements in magnifiers, and has particular reference to magnifiers which are especially adapted for reading or close inspection work.

An important object of the present inven tion is to provide a magnifier whereby a lens may be positivel held at-adefinite distance from the object eing viewed. 1

Another object is to'provide such a device wherein the lens may be adjusted to different positions so as to be capable of'usein different ways.

Anotherobjectis to provide such a device wherein the lens will be securelyheld in the various selected positions. 1

Another object is to provide such a device which will be {compact and conveniently portable. r V I Other objects and advantages should be apparent from the following specification when taken in connection with the accompanying drawings, wherein is shown for the purposes of illustration one embodiment of the invention; i I

In the drawings: 7 r V Figure 1 is a front elevation of a preferred form of theinvention; a

Figure 2 is a side elevation thereof; Figure 3 is a vertical sectional view line 3+3 of Figure l; p p t Figure 4 is a side elevation illustrating the lens'in an adjustedposition; i

F i-gure 5 is a front'elevation of the device on the 7 view showing the lens in still another operative position; V

Figure 7 is a front elevation showing the lens completely extended'from its supportin frame; i Figure 8 is a fragmentary sectional view on the line 8-8 of'Figure 7 and Figure 9 is a side elevation of the device illustrating still another possible operative position. j i -Referring particularly to Figures 1, 2 and 3, it will be seen that an open frame member 10 is provided preferably of annular for-111, said frame being split asat 11, andhaving reduced meeting ends 12 at its split portion;

Figure 6 is a similar A pair offin er grips 13 are provided, as shown,secure to the frame 10 and s aced from each other, preferably an equa distance from the meeting ends 12. While these finger gri s 13 may be of any suitable shape, I have il ustrated them as being in the outward direction, and as best shown in the form of curved ears extending in a general side elevation, their central portion is widened as at 14 for the purpose of ready manipulation.- The frame inember'lO and i the finger grips l3 may be integrallyfformed asby an aluminum or bronze casting, or they may bemade of separate pieces brazed or soldered together. A continuous lensrim 15isadap'tedt0 carry a magnifying lens 16 of any suitable optical power, and extending outwardly diameter of the frame 10, and the two members are eccentrically positioned with relation to one another so that the periphery of from one side of the rim 15 are a pair of lugs 12 o'fthe split frame. The diameter of the rim 15 is slightly less than the internal the rim 15 comes in frictional contact with r the inner surface of the frame 1Oat'the point 18: By this arrangement it will be 1 obvious'that when the lens and its containing rim are folded onto the frame member 10 they will; be securely held in place by virtue of the frictional contact. 1

In the use of thismagnifier the finger If desired, the lens containing rim 15 may be. swung; outwardly from the: frame 10 to: a

position at right angles thereto, as clearly shown in Figures 4 and 5. When thlSJS done the bottom edge ofthe frame 10may be rested upon atable or other suitable WOIk- I ing surface, upon whioh the object; to be magnified isplaced, and because offthe fact that the width of the frame member 10 is snbstantiall "equalto the focal len h of the. lens 16 goo results may be had.

t will be seen that in this form the focal distanoe of the frame 10, similar to that s ownin Fig ure 4, after which the whole structure is rolled slightly upon the periphery of the frame member 10, whereby the lens ispositio'rned at an angleinrel'ation to the supporting table. Some people may desire to use the instrument in this wa and here also as in the preceding form, t e focal. distance may always be accuratel maintained.

Some peoplemight nd: the finger griping portions;- 13 too smallfor their own individual use and, therefore, require a 7 larger grippin means;

only to swing t e lens rim Lithrough an are If so, they need 180. degrees, whereby it will. be completely extended from the fname 10, as clearly shown in Figure7. Itwill be herenoted that theform of the grips; 13 and the distance betwecnthem is so; designed that when the lens is in this extendedposition there will be;

frictional contact between the lens rim. and the ears 13, as at the point oft'angency 19; Thus; when the lens is so extended it will be firmly held in such operative position and the personusing; same may grasp the frame 10 in thepalm 015 his hand and the finger grips- 13. between his fingers, as will bereadily apparent.

In Figure 9 thelensrim isshown inan-interme'diateposition, wherebyit may be used,

as.- a: reading glass, the whole. frame memberlfl restin'g upon the surface of the book or other; ob ect, being viewed andfthe vision.

through, the lens. being oblique;

- By forming themeeting endsof the framev 10to: a reduced diameter as at 12, a pair. of shoulders 20' are: produced and; it is. to be noted thatithenormali distance between said shonldersis: slightly less,- than the distance-be.- tween the outer surfacesgof'theears 17. .With this construction, it is necessary,vv in order to assemble the, lens rim 15 in the frame returning to 161 that the open: end of the, frame he forced apart so; that the reduced ends 12 ma. be slipped, into the, ears-17. Thus t e frame 10, is constrained from. its initial form and as a conse uence there always a frictional contact: yr the shoulders 20 against thewfaces of the pivot earsv 17 whereby the rim; l firmay be adjusted to several different posi;. tionszand such adjusted positions; maintained by=-the frictional contact. 7

From the foregoin it will be obvious, that,

bani improved magni r has been produced,

which will be capable of many uses, and 1n view of: the fact that itis so readily foldable;

it-Vmay easily be carried a pocket, or; purse,

etc. The device is neat in appearance and will be strong and durable in service. Obviously, changes may be resorted to in the minor details of construction, and the right is herein reserved to make such changes falling within the scope of the claims without departing from the. spiritof the invention.

Having thus described my invention, I claim:

1. A device of the character described comprising a surroundin open Frame, a-lens pivoted within the frame so: as toliewithin the open frame in the thereof and alsoso as to be swung at ri t angles to the frame on; its: piv0t,,theheig t of said frame being equal substantially to the focal length of: thelens 2. In a: device; 'ofthe character 7 described! compri f a surrounding opemiframmalens pivoted Wlthil}. thev framagsoas to lie; therewithin in'theplane of the: and also so. as to be swung; on its pivot to: desired angle with the; frame extending" spacedmembers on the outside at thiefmmeadapt. ed to frictionally engage: between; them. the periphery of the lens v'vhenlit is'rotatedi sub stantially 180 degreesun its pivot. from its position within the frame and to hold; the? lens therebetwecn in extended. position. i

3. A, device. of the charaeter described.

comprising a surrounding openofran e, alena pivoted within the frame 9'0 asltp. lie therewithin in plane of the frame, and so as to be swung on its pivot to .deained angle with the: frame, extending; spaced members on-the outeideof the frame adap ed V to frictionally engage between them the;

peripheryQof. the lens when. it iii-(rotated.

substantially 180 degraesen its; pivot fr m its position within the frame and. to; hold the lens therebetween in Qxtandedgpqa'tien,

and resilient means adapted to urge: the

extending members; against the: periphery of: thelensiy .r 41 In a device of theclmnacter described, a surrounding open frame, a; lenspivoted within: the: fnameso as ta lie. thenewithin in the plane of therframe, means adapted. to hold: the: fhamein exte dfi position when it has been rotated substantially; 90 degreeson, it's pivot, the height. of. the frame be: substantially the same as theleng t fi of the lens, and extendim means to frictionally hold batman them the; periphery of the lens when it has been; rotatedsubstantialliy 1-80,- degreespn its axis. in

5. In a device of thechamacter described an, open surroundingfraane, a lens pivoted within the frame; to lie therewithinimfthe-g plane of the frame, means adapted to, hold the lens in extended jpei-litiom when. it; has been rotated substantially 90 v pivot, in which position the heigfilt/ of the frame is: substantially: equal to, the focal length of the lens, meansadapted to hold degree s on its;

the lens in extended position when it has been rotated substantially 180 degrees from its position within the frame, and resilient means adapted to urge the lens holding means to hold the lens in extended position.

6. In a device of the character described, a split resilient frame having a spring tendency to close the split ends and having extending finger portions and a lens having a projecting hinge member engaged by the 10 split ends, said lens being frictionally held in the split frame when closed and between the finger portions when open and in any position in between through the resiliency of the split frame.

DENIS HENRY OMEARA.

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