US257671A - Map and chart exhibitor - Google Patents

Description

(No mm A. DOM.

MAP AND CHART EXHIBITOR.

No. 257,671. Patented May 9, 1882. Q

. maps, charts, show cards, or other display UNITED STATES PATENT OFFICE.

ALEXANDER DOM, OF MOUNT HEALTHY, OHIO.

' MAP AND CHART EXHIBITOR.

SPECIFICATION formingpart of Iletters Patent No.'257,671, dated May 9,1882.

Application filed October18, 1881. (No model.)

Ohio, have invented certain new and useful lmprovements in Map and Chart Exhibitors, of which the following is a specification.

The object of my invention is to provides a convenient and cheap device for displaying sheetsfor use in schools or libraries. .It is es peeially applicable to displaying alphabetical and primary charts and small maps for prim'ary schools, but is not confined in its usefulness to this class of display-sheets.

Referring to thedrawings making part of this specification, Figure Us a perspective view of my invention. Fig. 2 is a perspective view of a detached portion. Fig. 3 is an enlarged central veftical section of the upper portion,taken at right angles to the roller. Figs. 4 and 5 represent modifications of my invention.

A is the standard, suitably upheld. In the present instance it rests upon three or more legs, (1. Upon the top of this standard is supported the frame A. This frame consists of the horizontal rail B and the arms B. The rail B is provided atits center with the pin b, which, when the parts are all in position, enters a hole, I), in the top of the standard A, as shown in Fig. 3. This hole bissufficiently large to allow the pin 1) to turn freely therein, so that the frame A, to which the pin b is attached, may be caused to revolve on top of the standard, the pin 1) extending far enough into the top of the standard A to give a firm support to the frame A". A rail, 0, is fixed to or suitably journaled in the arms B. The preferable form of said rail is that of a roller, as shown, and the preferable mode of connecting it to the standard is as follows: The top ends of the arms B are providedwith notches d, in which rests the axis of the roller G. If preferred, only one of the arms B need be provided with a notch,the other arm having a hole into which one endof the axis of the roller Gis placed,the purpose of these notches being to allow of a ready removal and insertion of the roller into the frame A. Around the roller 0, at intervals, are attached the maps orcharts I], as shown in Fig. 3. Astrip l' of muslin, X, or other strong cloth is attached .to each sheet along its upper edge, and it is by this strip that each sheet is attached to the roller or rail, thus preventing the tearing of the sheets as they are handled. These maps or charts are preferably printed on both sides to economize space, and the construction ofthe frame A and standard A is such as to permit of the ready inspection of either side,

it only being necessary'to revolvethe frame A one-half around. 1

' To give a better understanding ofmy invcn-.

side of the sheet bearing lesson five,this sheet is thrown over to the other side of the frame and the frame turned one-half around, which will bring lesson six to the position now occupiedby lesson five, and by turning the frame back again lesson seven will be visible, ithaving been uncovered when the sheet bearing lessons five and six was thrown over the frame. In this manner any desired lesson. may be broughtinto view, the roller 0, as the various sheets are thrown over, turning slightly, so that the outside. sheets always hang from the top of the roller, as shown in Fig. 3. The cloth strip X, interposed between the displaysheets and the roller, permits the several sheets to be readily thrown over the frame and prevents the sheets from being torn. By this means the sheets do not become injured by folding or rolling, and a great number of sheets may be attached to one roller, thus greatly economizing room,-and also making it much more convenient for the examiner than where he hasto hang each sheet separately on a frame.

My invention will be found very useful and convenient for schools, as it is very compact and portable, and is easily managed. While I have in the present instance represented my invention as applied to displaying a series of primary charts, it will be perfectly obvious that any description of chart, map, diagram, illustration, or other display sheet may be adpass up into a hole in the frame A; or one end of the pin 1) may be firmly held in the top of the standard A, the other end entering a hole in the frame A.

A modification of my invention is shown in Fig. 4, representing a substitute for the frame A and standard A. In this modification the roller 0 is made hollow and has passing through it the horizontal arm of the crane 1, this crane being secured to the strip or bracket 2, which is to be secured to the wall; or the crane may secured directly to the wall. In this instance the crane is moved from side to side to display the different faces of the sheets i sheets, substantially as described.

attached to the roller 0.

Another slight modification is shown in Fig. 5, in which the arms B androller (J are dispensed with and the display-sheets are to be attached directly to the rail 13, in which event the cloth connecting-strips should be somewhat wider than shown in Fig. 3 to permit the display-sheets to hang smoothly.

What I claim as new and of my invention, and desire to secure by Letters Patent, is-

1. In combination with a series of displaysheets, a frame or support to which one end of said sheets is attached, said frame being retained on an appropriate support and capable of being turned horizontally thereon, substantially as and for the purposes specified.

2. The roller G, having attached thereto a series of displaysheets, E, and supported by a frame, said frame being retained on an appropriate support and capable of being turned horizontally thereon, substantially as and for the purposes specified.

3. The standard A, provided at the top with hole b,and frame A, consisting of the horizontal rail B and arms B, the frame being provided with pin 1) and capable of being turned horizontally on the standard, in combination with the roller 0, having attached thereto at intervals around its face a series of display-sheets, E, substantially as and for the purposes specified.

4; The standard A and frame A, capable of being turned horizontally on the top of the standard, said frame being further provided with notches d, in combination with the roller 0, having attached thereto a series of display- 5. The rail 0, retained on an appropriate support and capable of being turned horizon- I tally on such support, and a series ofdisplay sheets attached to said rail by means ofa connecting-strip, X, substantially as and for the purposes speci lied.- V

1 ALEXANDER DOM.

Vitnesses: a

,- WM. 1*]. Jonas,

J. )VM. STREHLT.

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