US268474A - wilson faenham - Google Patents

Description

(NoModeL) E. W. FARNHAM,

PENMAN'S ARM REfi'I'.

Patented Deg. 5, 1882.

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E.- VVILSON FARNHAM, OF CHICAGO,

ATENT reins,

ILLINOIS, ASSIGNOR TO THOMAS A.

.STRAYER, OF SAME PLACE.

PENMANS ARM-REST.

SPECIFICATION forming part of Letters Patent No. 268,474, dated December 5, 1882. Application filed June 26, 188:2; (No model.)

To all whom it may concern:

Be it known that I, E. WILsoN FARNHAM, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Penmens Arm-Rests; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin g drawings, and the'letters of reference marked thereon, which form a part'of thisspeoification.

My invention relates to that class the object of which is to afford a rest for the arm when writing on a surface above that upon which the material to be written on rests. It is a substitute for the ordinary arm-rests having a transverse ledge or raised portion on one end of a thin board, which latter is inserted between the leaves of the book, thus running the risk of injuring the same by tearing the leaves andaft'ording a very precarious rest for the arm. This I accomplish by means of two boards of rectangular or other suitable shape, one of. which rests on the table or desk, having one end slightly extended to be pushed under the book, the other being of the same shape,- minus the extension, and placed immediately above the bottom or lower board. "These boards are connected at or near four corners by jointcdlinks whose angles tend inward toward the line indicating the center of length of said boards, and which are so constructed and arranged that the upper board or arm-rest proper can be raised to any desired elevation within the throw of said jointed links or inclined toward either end, as suits the convenience of the user, and maintained in such position, substantially as described in the following specification, and set forth or illustrated in the drawings, in which- Figure 1 is a side elevation. Fig. 2 is a plan view with the top board removed.

A and B representthetop and bottom boards, respectively. The bottom board, B, is intended to rest upon the desk or other support upon which the writing material or book is placed, and has an extension, at, on one end in the direction of its length, which is intended to be inserted under the cover of the book, so as to keep the device from moving. This extension, though, may be dispensed with, and U-shaped spring-grasps may be secured to the end of the board, so as to pinch the cover of the book, in the stead of the same; or both may be dis pensed with, if desired, as it is conceived the weight'of the writers arm would holdit stationary. The upper board or arm-rest proper,

into knuckles to receive the knuckles of the knee or jointed links 0 G O 0, connecting the. boards A and B. These links are so arranged that the angles of the two joints near one end face or' operate toward the two links near the other end, thus securing a vertical motion, if desired. Theupper bars, 0 0, of two of the jointed links, 0 Gone on either side of the device near corners diagonally opposite to each other-have extendingin the direction of their length, and in a straight line to the lower board, the arms or extensions (1 d, which maybe made in one piece with or securely fastened to the bars 0. These arms d are tapered transversely at their lower ends to form a knifeedge, which engages with the racks D D on the upper surface of the lower board, (see Fig. 1,) by means of which the arm-rest proper. may be maintained at any desired elevation within the throw of the joints 0 C.

It will be observed from the construction above described that the upper board or armrest may be inclined in the direction of its length or toward its ends by adjusting the arm, at the end to be elevated, higher or toward the inner end of the rack, as suits the convenience of the writer. If desired, the lower board could be dispensed with and an open metal frame be used in its stead, and wire could be conveniently used to form the jointed links, so as to simplify device. I

By the above means I obtain a simple, cheap,

too

and convenient arm-rest, which would be an acquisition to the ordinary desk material, and avoid the use and abuse of nondescript material in the effort to procure a suitable elevation and incline of the arm.

. What I claim, therefore, and wish to secure by Letters Patent, isi 1. Thecombination of the boards, thejointed connecting-links, the extensions, and means, substantially as described, with which said extensions engage, whereby the upper board is adapted to be raised vertically, or be inclined toward either end and be maintained in its adjusted position, as and for the purpose set forth.

substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I hereunto affix my signature in the presence of two witnesses.

' E. WILSON FARNHAM.

Witnesses:

JNo. L. BALLARD, E. L. MORPHY.

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