US141822A - Improvement in stereoscopes - Google Patents

Description

L. D. SIBLEY.

Stereoemopes.

No. 141,822. PatenredAugusuLmn.

AM mom-umasMnH/c co. N. Wassomvs macsss 'thereby conning the same in position.

NrrED STATES ATENT OFFICE.

LORENZO D. SIBLEY, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN STEEOSCOPES.

Specification forming part of Letters Patent No. 141,822, dated August 12, 1873; application iiled September 21, 1872.

To all whom it may concern:

Be it known that I, LORENZO D. SIBLEY, of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Stereoscope, of which the following is a specication:

Figure l is a vertical transverse section of my invention. Fig. 2 is a vertical longitudinal section of the saine, showing the lenses vertically above the box. Fig. 3 is a detail section transversely through the book.

Similar letters of reference indicate corresponding parts.

This invention relates to an improved stereoscopic instrument for holding a number of pictures in a book or folding rack. The inveny tion consists, first, in such arrangement of the `book or picture holding rack that the same,

although very compact when out of the instrument, will be properly rotated to display the pictures successively, when in the box or instrument, by a rotary toothed wheel placed in an inclined position in one end of the box, and engaging with loops or arms formed on the ends of the wires to which the pictures are secured. The invention also consists in arranging metallic clasps so as to connect the pivotwires and hold the pictures. The invention also consists in hinging the frame to the box, so that it can be vibrated from one side of the box to the other, as may be desired.

I shall now rst proceed to describe the book or picture holding rack.

The same consists of leaves A A, which are held at their inner ends by metallic clasps a projecting from wires b, and hinged thereto. The clasps aI have metal-band extensions d, that fold over the outer edges of the leaves, The leaves can thus vibrate on the wires b. Each clasp a hinges not only to the wire under the leaf which it holds, but also to the wire next adjoining, so that by this arrangement of connection the several wires are all united, and the several leaves A A constitute the complete book.

To the opposite sides of each leaf A of the book can be fastened the pictures to be displayed, said pictures being held in place by the metal bands d, which can easily be folded over, they being flexible.

lThe wires extend at one end of the book beyond the leaves, and form there loops or arms e e, all of which are or may be connected by woven tape, by which they will be held at the required angle apart when the book is folded open. The outer leaves or covers of the book have at their inner ends outwardly-projecting ears f f, which serve as supports for the book on the bottom of the containing-box B. This box B is made large enough to receive the book and to let the same be folded in the manner indicated in Fig. 1. In one end of the box is hung an inclined shaft or button, C, with tooth-like ribs or lianges g at its inner end. When the book is put within the box the loops, or some of the loops, of the book will be between these teeth g, so that in turning the button C the leaves of the book will be turned successively in the same direction in which the button is revolved. Thus the leaves can be successively displayed in the desired manner.

It must be here remarked that one or more vertical or inclined plates or ledges, h h, pro ject from the ends of the box inwardly, to sup port the book when it is folded, and to constitute a sort of pivot for the same, which will be clearly understood by reference to Fig. 1. In fact, without these ledges or plates h h, one or more, the book could not be operated by the button C, nor be brought in reach with the teeth of the same, the plates h h holding the book in position for such reach, and also convenient for being folded from one side to the other, backward or forward.

The box B has on opposite sides openings for the inspection of the pictures. l) is the lens-frame, containing the stereoscopic lenses, of ordinary construction, and hinged to arms E E, that are pivoted to the ends of the box.

In these pivoted arms the lens-frame can be swung to bring the lenses opposite either one of the openings in the sides of the box, so that the pictures on the opposite sides of the leaves vcan be observed through the same lens-frame by bringing the frame to the opposite sides of the box. One of the openings in the box can be closed by a hinged lid, F,which is clearly shown in Fig. l. This lid can also be left open when transparent pictures are to be inspected. rThe top and upper part of the ends G ot' the box is made of ground glass, for the purpose of excluding the dust and admitting the light. The outer part i of the lens-frame D is, by X-levers H, connected to the inner part 7' of the same frame, and can, by means lof said levers and by rack and pinion Z, be

bination with the loops or arms o of the wires d, as and for the purpose specified.

2. The clasps a, arranged as described, and each provided with arms attached to two contiguous Wires, d, whereby the series of Wires are hinged together and the pictures or cards supported, as set forth.

3. The lens-frame D, pivoted by arms E to the box or frame B, so that it can be swung to either side, as set forth.

LORENZO D. SIBLEY.

Witnesses:

ADAM GRAHAM, JEFFERSON GRAHAM.

Images