US404389A

US404389A - Crayon-rack for blackboards

Info

Publication number: US404389A
Authority: US
Publication date: 1889-06-04
Anticipated expiration: 1906-06-04

Description

(No Model.)

A. J. DOUGLASS.

GRAYON RACK FOR BLAGKBOARDS.

.389. Pa tented June 4, 1889.

WIZJVESSE'S. Maw/ alzzormy/ i.

N. PETERS Phok'hlbogmpher. Washin ton D. c.

UNITED STATES PATENT 0FFICE.

ADELBERT J. DOUGLASS, OF ILION, NEWV YORK.

CRAYON-RACK FOR BLACKBOARDS.

SPECIFICATION forming part of Letters Patent No. 404,389, dated June 4, 1889.

Application filed December 8, 1888. Serial No. 293,039- (No model.)

To all whom it may concern:

Be it known that I, ADELBERT J DOUGLASS, a citizen of the United States of America, residing at Ilion, in the county of Herkimer and State of New York, have invented certain new and useful Improvemen ts in Crayon- Racks, of which the following is a specification, reference being had therein to the accompanyin g drawings.

My invention pertains to an improvement in crayon or chalk racks or shelves for blackboards; and it consists in the peculiar structure, combination, and arrangement of parts, substantially as hereinafter more fully shown and described.

In the accompanying drawings, Figure 1 is a View in perspective of my invention. Fig. 2 is a plan view thereof. Fig. 3 is a vertical section showing the rack thrown up, and Fig. at is a detail view thereof.

The object of my invention is to provide, in connection with the ordinary blackboard tray or receptacle for the dust which falls from crayons and erasers when used upon blackboards, an adjustable rack upon which to rest the crayons and erasers, and which may be thrown back out of the way for cleaning the dust from the (lust-tray, and tightly closed down again upon removal of the dust.

One feature of my invention is the facility with which the crayon-rack A maybe secured to the dust-tray of any ordinary blackboard by hing-ing rack A to the top of the beveled wall or front rim B of the dust-tray by. means of the staples a, as shown. This enables the rack to be readily tipped back from over the dust-tray for convenience of removing the dust therefrom.

Thecrayon-rack A consists of awire gauze or netting having its front edge I) turned up at right angles, and its inner edge I) turned down oppositely thereto and outwardly and obliquely inclined, its front upturned edge 1) serving as a fender as against the accidental falling off therefrom of crayons and erasers, and its inner downturned edge 1) serving as a standard or support to hold the rack in horizontal position.

The spring 0 (one or more of which may be used) is formed of a single wire having its vertical ends 0 secured in coincident orifices in the bottom of the dust-tray, and its horizontal part slightly bowed to project outwardly, as shown.

The turned-down edge of the crayon-rack A, which is inclined at an angle outwardly from the blackboard, as aforesaid, is arranged to press against and to gradually retract springs O in closing down the rack over the dust tray, and when rack A has passed springs O the springs recoil and hold the rack securely in position, thus preventing accidentalor unnecessary tipping of the rack. Back A may also, when desirable, be provided with lateral turned-down edges fitting at either end of the dust-tray, and light strips of wood in lieu of the metallic fender and support may also be used. Thus constructed my crayon-rack, which is inexpensive, may be correctly adjusted to any required dimensions and readily attached to the dust-tray of any ordinary blackboard.

I claim- The crayon-rack consisting of the crayon or chalk screen, the dust-trough, and the springs, the screen comprising a series of transverse Wires bent down to form a vertical leg for the support of the rear edge of the tray and upward to form a guard at the front edge of the tray, said springs being formed with vertical end portions secured in the bottom of the trough, and with a horizontal portion bowed to project outward to secure the screen in place, substantially as shown and described, and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ADELBERT J. DOUGLASS.