US732863A - Blackboard attachment. - Google Patents

Description

PATENTED JULY 7, 1903..

7 F. D. JONES. BLAGKBOARD ATTACHMENT. APPLICATION rum) 110v. 20.. iase.

1 no menu ll. J

UNITED STATES Patented duly T, 1903 PATENT OFFICE.

BLACKBOARD ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 732,863, dated Jul v, 1903.

Application filed November 20, 1899. erial No. 737,696. (No model.)

To all whom it concern:

Be it known that I, FREDERICK DILLWYN JONES, a citizen of the United States, residing of which the following is a specification.

crayon and eraser in place on the holder.

This invention relates to crayon-troughs and eraser-holders for use in school-rooms infront of blackboards and the like.

The object of this invention is to provide simpler, cheaper, and more desirable means for securing cleanliness and convenience in the use'of crayon. By means of this invention the crayon and erasers are held out of the crayon-dust, and the crayon-dust can be removed from the trough more readily than heretofore anddeposited in a receptacle,which can be emptied at intervals.

The accompanying drawings illustrate my invention. 1

Figure 1 is a fragmental perspective view showing my invention in use. Fig. 2 is a fragmental plan view. Fig. 3 is a cross-section of the holderon line 3 3, Fig. 2, showing Fig. 4. is a longitudinal section of a fragment of the holder on line 4 4., Figs. 2 and 3.

Myinvention comprises a member consisting in a strip 1, provided on its upper face with longitudinally-arranged crayon-s upport ing flutes 2, the spaces 3 between which are narrower than the diameter of an ordinary school-crayon, as indicated at 4 in Fig. 3, and converge downward at anjacute angle, thus to provide for a dust-containing space in each groove below the plane to which the crayons will be allowed 'to come when they rest inthe grooves of the flutings.

5 indicates a marginal head at the-front margin of the member 1, extending above the level of the flutes 2 toprevent the crayon from rolling off. of the support in case the crayon is laid diagonally acrossthe flutings.

The top of the flu-ting is preferably in a level plane, and the flutes are preferably rounded, tapering upwardly, so that the intertlutespaces 3 are narrower at the bottom than at the top, so that the crayon-dust which comes from the board and from the erasers will accumulate at the bottom of the spaces below i the crayon-holding portions a of the walls of the grooves and below the supported crayon.

6 indicates perforations extending down through the member 1 from the bottom of the interflute-spaces.

7 indicates a box to form a removable receptacle for the crayon-dust which will be brushed from time to time into the receptacle through the perforations. V

8 indicates gains for detachably holding the box in place against the under side of the member 1 and beneath the perforations.

It is to be understood that perforations and receptacles for the dust may be placed at suitable intervals along the crayon holder 1 wherever required.

In practical use the crayon will be held by the flutings above the bottom of-the interflute spaces, so that they can be 1 readily grasped by the fingers. The flutings extend straight longitudinally of the trough, and their tops are in asubstantially horizon tal plane, so that when the crayons are laid crosswise of the trough they are supported at intervals throughout their length ,-so that they are not liable to be broken by any slight pressure upon them.

beneath. The flutings protect the dust from any ordinary disturbance, so that the dust is at all times kept out of the way.

In Figs. 1 and 3, 1) indicates the blackboard.

It is to be understood that the fluted strip extends in ordinary practice along the blackboard from end to end thereof, this construction being suggested by the broken member l in Fig. l.

What I claim, and desire to secure by Letters Patent of the United States, is-

The dustcan be readily brushed along the flutings into the receptacle her is flat and fluted longitudinally, the spaces between said flutes being contracted below the tops of the flutes, whereby the upper por- Lions of the flutes form crayon-supports and the spaces between the bases of the flutes form dust-receptacles to hold the dust below and out of contact with the crayons, the front edge of said attachment being extended upward to form a retaining-bead, substantially as set forth.

3. A blackboard attachment comprising a member secured in front of the blackboard, the upper surface of which member is fluted longitudinally and lies in asubstantially horizontal plane and furnished at the front edge with a retaining-bead extending above said plane.

4. A blackboard attachment comprising a member secured in front of a blackboard, the upper surface of which member is fluted longitudinally with open-ended flutes and lies in a substantially horizontal plane and furnished at the'front edge with an upwardly-extending retaining-bead.

5. A blackboard attachment comprising a member secured in front of a blackboard, the upper surface of which member is fluted longitudinally and lies in a substantially horizontal plane, the spaces between said flutes being contracted below the tops of the flutes and extended through the member substantially as set forth, the front edge of said attachment being extended upward above the level of the tops of the flutes to form a retaining-bead.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, at Los Angeles, California, this 13th day of November, 1899.

FREDERICK DILLWYN JONES.

Witnesses:

JAMES R. TOWNSEND, FRANCIS M. TOWNSEND.

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