US107969A - Improvement in reading-glasses - Google Patents

Description

To all whom it may concern:

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Letters' Patent No.107,l)69,`dated October 4, 1870.

l IMPRovEMEN'r IN READING-emesse.

The Schedule referred to in these Lettere Patent and making part of the same Be it known that I, J. HYATT SMITH, of Brooklyn,

` ED., in the county of Kings and State of New York, have invented a new and useful Reading-Glass; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had'tothe accompanying dra-wing making part of this specification, in' which- Figure 1 is a perspective View of the instrument.V Figure 2 is a front elevation of the same. Figure 3vis an end view ofthe same. Figure 4 shows the standards of the instrument folded.

l Similar letters of reference indicate 'corresponding parts in the several figures. v

4The ob "ect of this invention is to alord public speakers a means whereby they han readily read from notes or books placed before them on a desk, while addressing an audience,without the necessity of stopping or using spectacles.

`The n ature of .my invention consists in`the elnploymentof" a magnifying glass, of suitable powei', applied to a frame, which is so constructed` that such glass can be arranged over a; book or manuscript, and adjusted vertically, and at any desired angle, as circumstances may require. y

To enable others skilled @in the artto understand my invention, I will describe its construction and operation.

In the accompanying drawing- ,y A represents a rect-angular fl-ame, within which a double convex magnifying-glass, B, is suitably secured.

The frame A is connected; at its ends, to vertically adjustable standards, O C, by means of pivots al a2, one-of \vhicli,'a2,` is a thumb-screw, for'xing the frame A, and contained glass at any desired angle of inclination. .f

Each one of the standards O is, preferably, made of two sections, a. b, connected by a hinge, to allow ble?.

the lower portions to be folded, as shown in iig. 4, although I do not confine myself to the hinged sectional standards..

The lower sections, b, of the standards are toothed ou their ii-ont edges, and fitted into posts D, that they may be moved up and down -in such parts.

The teeth of the portions b b engage with spurwheels :l d, which are applied t-o short horizontal shafts m. m, that have their bearings in offsets c c of the posts D'. 1

'The small thumb-wheels c c, whiclrare fixed to the ends ot' the shafts m an, are used to turn wheels l d, and thus raise or lower the glass and its frame.

Atthe back of the posts thumb-screws, f, are applied, for the purpose of fixing the standards C C after the glass has been adjusted vertically'to the reqnired focus.

The posts rise from feet D D', by which the instrument is sustained in aV steady manner. If desirable,the standards and posts may be so constructed and applied to the frame A that their lower ends will be further apart when the `instrument is erected than their upper ends, thus affording a firmer support.

From the above description it will be seen that I have adapted a magnifying-glass, to be used upon a desk or table over a book 'or other reading matter, and to be adjusted and set to afford the best possible view to a person standing before the said desk or ta- Having described my invention,

lVhat I claim as new, and desire to secure by Letters Patent, is

The reading instrument, adapted for the purposes herein described, consisting ot' a glass pivoted tof legs, and which glass is adjustable, both invheight and inclination, by means substantially as described.

i. J. HYATT SMITH."

Witnesses:

HENRY J. LonlNe, Jr., War F.. GREEN.

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