US281601A - Chart-holder - Google Patents

Description

(No Model.) i Y 4 D. Y'ARIAN.

- CHART HOLDER. l No. 281,601'. l Patented Julylfl.,1883.

Il Il u 'b' N. Firms, Mmmm www n. c.

UNITED STATES PATENT OFFICE..

DAVID YARIAN, OF SWAN, INDIANA.

CHART-HOLDER.

SPECIFICATION forming part of Letters Patent l1\To.,281,601, dated July 17, 1883, Application led April 23, 1883. (No model.)

To all whom it may concern:

Be it knownthat I, DAVID YARIAN, a citi- Zen of the United States of America, residing at Swan, in the county of Noble and State of Indiana,have invented certain new and useful Improvements in Chart-Holders; and I do hereby declare the following to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon', which form a part of this specification.

This invention relates to a device for supporting charts or maps-such as used in schools or by lecturers-in convenient position for being successfully displayed and removed from view.

rIhe object of the invention is to enable the charts or maps to be supported in convenient position for ready reference during a lecture or demonstration, and to obviate rolling them to put them away or out of reach of injury when not in use.

The invention consists in certain novel constructions and combinations of devices, which will be hereinafter particularly described, and pointed out in the appended claims.

'In the accompanying drawings, Figure l is a front view of a chart-supporting apparatus constructed according to-my invention. Fig. 2 is a vertical section on the line x' x, Fig. l. Fig. 3 is a top view of the apparatus, the chart-supporting arm being shown partly in dotted lines. Fig.v 4 is a transverse section on the line y y, Fig. l. Fig. 5 is a detail View, illustrating a modification of the arc-bar.

The letter A designates a narrow board or `wooden strip, which is to be secured in a vertical position to a wall or other support.

`the front of this board is secured a hollow and near the ends of which are secured the ends of an arc-shaped approximately semicircular bar, G, upon which are arranged the various rings H, from which the several charts I are suspended.

To the upper end of the slide E is attached one end of a cord, 1c, which passes over apulley, L, mounted in the upper bracket, C, and

passes downward into the casing B, where its 6o other end is secured `to a weight, M. To the lower edge of the cross-bar F is secured one end of an operating-rod, N, which passes downward through a guide-opening in the lower bracket, C', and is provided at its lower 65 to receive the pointed end of the other. They 7o will be held together by their elasticity, but may be separated for placing on and taking off the rings. The charts I being secured to suspension-rings in the usual manner, these rings are strung on the arc-shaped bar G, the rings being preferably placed on the bar first and the charts attached thereto at pleasure. The weight M is sufficient to overbalance the weight of the charts, the cross-bar F, and its connections, and whenthese are left free they 8o will be obviously drawn upward by the weight, which is protected by the casing B. The strip or board A is to be secured at such a height that when the cross-bar F is drawn upward as high as it will go the charts will be held out of reach, and when it is vdesired to bring them down to a convenient position for obser- .vation the cross-bar is drawn downward by means of the operating-rod, which will be held in any position to which it is adjusted by 9o means of a spring, p, secured to the bracket C', and arranged to bear against said rod.

The charts may be hung so that when the rings are slipped to one end ofthe bar G the backs of the charts will be'outward, and their 95 faces will be exposed by slipping them to the other end of the bar, the charts being obviouslyreversed as theymove around the curved bar; or, when charts are printed on both sides,

their opposite faces may be exposed by chang- 10o ing them from end to end of the curved bar G. Having now fully described my invention,

I wish it to be understood that I do not oonne myself to the precise construction and arrangement of devices shown in my drawings, but may vary the saine in any suitable manner for the better carrying out of my invention without departing from the essential principle thereof.

What I claim is- 1. The ehart-snpport composed of -theboard A, hollow ease B, having guide-strip D arranged in front thereof, the oross-bar F, having the slide E seoiu'ed thereto and eonneeted with said guide-strip7 the pulley L, the cord passing over said pulley from the eross-bar,

Images