US1394538A - Drawing-board - Google Patents

Description

J. F. COPELAND.

DRAWING BOARD.

APPLICATION FILED MAY 24, 1920.

Patented Oct. 25, 1921.

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a? I i I JOSEPH F. COPELAND, OF HILL, PENNSYLVANIA.

DRAWING-BGARI).

. Specification of Letters Patent.

Patented )ct. 25, 1921.

Application filed. May 24, 1920. Serial No. 383,970.

' and illustrators engaged in making wash drawings. It iscommon practice, in this class of work, to paste the marginal portions of drawing paper to a conventional drawing board. with very unsatisfactory results. Primarily, when soapplied, it is necessary to cut the paper in order to remove the finished drawing for the reason that the pasted portions firmly adhere to a wooden board, Cutting frequently results in tearingof that portion ofthe paper containing a drawing. The adhering portions remaining-tend to form a raised, uneven surface requiring frequentscraping of the drawing board.

Another disadvantage is that drawing paper so applied tends to bulge or buckle with the result that an undesirable working surface is presented. Frequently the working surface has a tendency to split. For exhibition and shipping purposes a drawing must be stripped from its board and stretched upon a proper mount, and in the event of shipping the mount must be'boxed.

The leading object of the present inventiOIl'is to overcome the above described disadvantageous features and provide a novel form of drawing board attachment of simple, efficient and comparatively inere pensive construction capable of application to boards in use or which may be applied to boards the time manufactured. Other and further objects will appear hereinafter.

The invention consists of the improve ments hereinafter describet and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof. and in which:

Figure 1, is a perspective view of my 1mproved drawing board illustrating the manner of assembling same.

Fig. 2, is a fragmentaryview in crosstures of the invention.

section, drawn to an enlar being in assembled position, and

Fig. 3, is a top or plan view of a drawing board embodying features of the invention and illustrating the manner of using same.

F or the purpose of illustrating my inven tion I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the. various instrumentalities of which my invention consists can be variously arranged and organized and that my invention'is not limited to the precise arrangement and organization of the instrumen- 'ed scale, the parts 'talities asherein shown and described.

In the drawings 10 designates a conventional drawing board of wood. Fixed to its upper face and extended marginally along at least one end and one side thereof is an edging 11 preferably having a continuous undercutor beveled portion 12 for a purpose to presently appear. For illustrative purposes, I have shown the edging 11 as comprising strips of wood secured to place by suitable means as screws 13. This forms a convenient method of converting a used drawing board into a board embodying fea- In case the attachment of the invention is built into a drawing board at the time of manufacturing, it may be deemed expedient to form the edging as an integral part of the board. It will be noted that the outer edges of these strips are flush with the outer edges of the board 10. Removably fitted to the upper face of board 10 is a mount 14 of suitable fibrous material. In practice excellent results ha s been obtained by using what is commercially termed compo-board. Those edges of the mount calculated for abutting relation with the edging 11 are beveled as at 15, so that a relative inter-lock is provided. Bestresults have been obtained by providing an edging upon but two sides of a board and beveling the mount edges accordingly although obviously three sides may be 5-10 formed if desired. The remaining sides of the mount, in the present instance two, are secured to the board 10 by suitable means as screws 16. The mount is countersunk to receive the :crew-heads and the board is provided with screv.'tl1readed sleeves 17 to receive the screws. Thus the mount may be removed and replaced as desired. The underside of the mount may if desired be provided with means for suspending the same for exhibition purposes. A ring 18 secured in a countersunk portion 20 adjacent an edge of the mount constitutes an example of such means. A description will now be given of the manner or". using the above described board. Drawing paper has first applied to mounting upon a conventional stretcher.

Such stripping may be readily effected because while properly adhering for working purposes no such undue adherence is present as when a wooden board is employed. If desired the mount 14. with the drawing adhering may be removed by the loosening of screws 16 with respect to the base or drawing board proper.

Among the advantages claimed for my improved drawing board mention may be made of the following (a) Buckling, splitting and tearing of drawing paper is eliminated.

(b) The mount may be utilized as a stretcher for exhibition and for shipping purposes.

(c) When a drawing is shipped adhering to a mount, the drawing is protected against puncture by the backing thus afforded.

(d) When several drawings adhering to mounts are shipped together, boxing of the drawings is unnecessary.

(e) The mounts may be repeatedly used in that drawing paper readily strips therefrom in an even and uniform manner thus always leaving a smooth surface upon the mount.

It will now be ap arent that I have devised a novel and uselal construction which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description and while I have in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

What I claiin is V 1. A drawing board comprising a fixed base portion, provided upon a plurality of sides with a marginal raised portion or rim, a fibrous mount removably fitted over said base in abutting relation with said rim, the top of said rim and the top of said mount being flush with one another, and means for securing said mount to place. I

1 2. A drawing board as described in claim 1, characterized by inner beveled edges for said rim and outer beveled edges for'said mount.

3. A drawing board as described in claim 1, characterized by screw-threaded sockets in said base and screws for securing said mount to place said screws being accommodated by said sockets.

4. A drawing board as described in claim 1, characterized by means carried by the mount for suspension purposes;

5. A drawing board comprising a base provided upon a plurality ot'sides with a fixed marginal raised portion or rim the outer faces of which are flush with the outer faces of said base at least one side of said base being free'of a raised portion to permit insertion of a mount,- a fibrous iount removably fitted upon said base in abutting relation with said rim and means for securing said mount to place.

(5. A drawing board comprising a solid base, provided upon a plurality of sides with a fixed raised portion or rim at least one side of said base being free of a raised portion to permit insertion of a solid mount, a fibrous mount removably fitted upon said base in abutting relation-with said rim, the cx iosedside ot the'mount adjacent the side oi. the base which is free of a rim being flush with such base side and means for securing mount to place. V

In testimony whereoffI have hereunto signed my name.

* .iosnrn COPELAND.

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