US680104A - Leaf-support for desks. - Google Patents

Description

Patented Aug. 6, I901.

a. H. WYMAN. LEAF SUPPORT FOR DESKS.

(Application filed Feb. 13, 1900. Renewed Dec. 28, 1900.)

(No Model.)

"In: NORRIS mans cu. vacuums. wunma'ruu. q. c.

UNITED STATE PATENT OFFICE.

GEORGEH. WYMAN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO WALTER S. RU-TLEDGE, JOHN R. FEUSTERMAKER, AND CHARLES A. MCFARLAND,

OF DAYTON, OHIO.

LEAF-SUPPORT FOR DESKS.

SPECIFICATION forming part of Letters Patent N 0. 680,104, dated August 6, 1901. Application filed February 13,1900. Renewed December 28, 1900. Serial No. 41;361. (No model.)

To 0022 whom, it may concern:

Be it known that I, GEORGE H. WYMAN, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Leaf-Supports for Desks; and I do hereby declare that the followingis afull, 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 accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in leaf-supports for desks, the features of which will be fully hereinafter described and claimed.

The object of my invention is the support of the leaf on pivots and to hold the same in suitable positions by arms carrying pawls which engage rack-bars fixedly attached to the inner surface of the back wall of the desk and which leaf may be lowered or raised to the position for use at pleasure.

The mechanism is illustrated in the accompanying drawings, in which Figure l is an enlarged view of the inner end of the supporting-arm with a portion cut away and a part in section. Fig. 2 is aside elevation of the desk with portions cut away. Fig. 3 is a front elevation of the same with the leaf suspended. 4

Like letters and numerals designate like parts throughout the several views.

The desk A is a wooden frame in which are held the two drawers B B, and when adapted to use it would be secured on brackets against the wall of a room. The desk may have any desirable form, but for the purpose of my invention the leaf must be pivoted to the under and near surface of the same. The supporting part is the metallic quadrangular frame E, which is held by screws to the projecting parts of the front, top, and back and is provided with the ear 10, to which is pivoted the leaf 0. The plates 9 are secured by screws to the outer face of the inner corners (See Fig. 3.) On the under of said desk.

surface of the leaf are attached the supporting-arms D, which comprises the fiat portion screwed on to the under surface of the leaf, the extension backward terminating in the housing 4, in which is pivoted the pawl 22. The arresting-lug 11 is attached to the top part of this housing. The near side of the housing is shown cut away at Fig. 1. The flat spring 6, with a rounded engaging sur face, is attached to the lower corner of said housing. On the pivot 5 is supported the pawl 2 within said housing. This pawl comprises the curved notch 7 at its upper corner,

1 the shoulder 13 just forward, and the shoulder 12 near the point, which is adapted to engage the rack-bar when not held against the latter shoulder by the pressure of the flat spring 6. The rack-bar 1, which is attached to the back of the desk, comprises a series of teeth, and beneath these is the disengaging lug 3. On the inner surface of the front wall is attached the lug 8, which the pawl engages as the leaf is let down.

The operation is thus: The leaf being down, on raising it the pawl engages the rack-bar, and the leaf is thus maintained in a nearly horizontal position and is then adapted as a writing-desk. By raising the leaf until the point of the pawl engages the lower lug the pawl is thrown sufficiently back to be held by the spring out of contact with the teeth of the rack-bar, and when the leaf is let down the pawl strikes the upper lug, and the pawl is thereby released and willagain engage the rack-bar. By the movement of the leaf the pawl is attached or detached, as may be desirable. The supporting parts of the two sides are identical.

Having fully described my invention, what I claim is 1. The combination of the desk-frame provided with ears at the lower front corners, the supporting-arms with housing on the rear end, the pawls pivoted within said housing, the leaf with plates pivoted to said ears, the rack-bar attached to said desk-frame adapted to be engaged by said pawl, the lug 3 of the rack-bar, and the flat spring adapted to engage the pawl and hold the same out of engagement with said rack-bar, substantially wail to throw said pawl forward, and bring as described. the same into possible engagement with said 2. The combination of the desk-frame with rack-bar, substantially as described. ears attached to the lower'front corners, the In testimony that I claim the foregoing as I 5 5 supporting-arms provided with housing on my own I affix my signature in presence of the back end, the leaf pivoted to said desktwo Witnesses. frame, the pawl pivoted within said housing,

the rack-bar attached to the desk-frame v WYMAN' adapted to engage said pawl, the disengaging \Vitnesses: :0 lug, the flat spring adapted to engage the CHAS. L. BATCHELLER,

not-ch in said pawl, and the lug 8 of the front 'E. L. PRIDLAND.

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