US1163755A - Drawing-board support. - Google Patents

Description

P. W. HUTTON 6I E. F. WORST.

DRAWING BOARD SUPPORT.

APPLICATION FILED IAN. I9. 1914,

1,163,755. Patented Dec. 14, 1915.

2 SHEETS-SHEET l.

JINI* III;

P. W. HUTTON & E. F. WORST.

,DRAWING BOARD SUPPORT.

APPLICATION FILED IAN. I9, I9l4.

2 SHEETS-SHEET 2.

entran stares natuur opriep.

PHILIP W. HUTTON, OF CHICAGO, ANI) EDWARD F. WORST, OF LOCKPORT, ILLINOIS.

DRAWING-BOARD SUPPORT.

Specification of Letters Patent.

`Patented Dec. I4. 1915.

Application filed January 19, 1914. Serial No.` 813,050.

To all whom 'it may concern:

Be it known that we, PHILIP I/V. HUTTON, residing at Chicago, in the county of Cook and State of Illinois, and EDWARD F. VVons'r, residing at Lockport, in the county of Will and State of Illinois, both citizens of the United States, have invented a certain new and useful Improvement in Drawing-Board Supports, of which the following is a speciiication.

@ur invention relates to supports for drawing boards and similar objects.

The device is of special advantage in schools in which manual training is taught. In schools of this character the course includes both shop work and drawing and for the shop work a work bench is, of course, required. Such benches are invariably furnished with a vise of some kind. It is not always practical to devote a special room or rooms for class work in drawing and vet the work benches in the shops cannot well be used as drawing tables for reasons obvious to those familiar with work of manual training schools.

One of the objects of our invention is to provide means whereby it will become practical to use the same room for both shop work and drawing.

With this and other desiderata in view it is our purpose, more specifically, to provide a drawing board support which may be held in a work bench vise; second, to'

provide a drawing board and support the parts whereof may be readily assembled and disassembled so that the drawing apparatus may be stored when not in use.

As contributing to these general objects, it is our purpose to provide certain details of construction more specifically pointed out in the following description and claims.

We obtain our objects by the construction illustrated in the accompanying drawings in which- Figure l is a side elevation partlyin section showing the parts mounted in a vise. Fig. 2 is a rear elevation of the parts shown in Fig. l. Fig. 3 is a plan section on the line 3-3, Fig. l. Fig 4 is a sectional elevation on the line 4-4, Fig. l. Fig. 5 is a detail showing the mannerof supporting the side bars on the trunnions. Fig. G is a perspective view of the support showing the manner in which the turn button engages the type of cleat shown in Fig. 9. Fig. 7 is a perspective of the upper end of the standard. Fig. 8 shows the upper end of the -standard with the turn button removed.

9 is a perspective of one form of cleat with which the drawing board may be provided. It'ig. 10 is a front to rear sectional Aelevation showing the board equipped with the type Vof cleat shown in Fig. 9 and Fig. ll shows a modified form of cleat.

Similar numerals refer to similar parts throughout the several views.

In the form selected to illustrate the invention the standard l is adapted to be separallel side bars 4,4, fastened together by two'cross bars', 6. By preference the upper surface of the front bar 5 should come flush with the upper surface of the side bars while the rear cross bar should be slightly elevated as shown. Stops 7 are formed at the forward end 0f the side bars for limiting the forward movement of the board.

Drawingboards are usually all pretty much the same in general construction although slight variations may occur. A well known type of board is shown in Figs. l to il, and in this type the board proper 8 has marginal side strips 9, 9, of a thickness greater than that of the rest of the board. These engage the ends of the rear cross bar 6 and prevent the board from slipping laterally. In this type also an under pocket l0 is formed at the front of the board by a bottom strip ll, the purpose of the pocket being to afford a receptacle for the triangles or other tools or instruments used by the student. In our device the upper edge of this bottom strip is engaged by the nose 12 of a turn button l2 which is secured by a point of the nose and this acts as a stop for limiting the rearward movement of the board whenthe parts are assembled, as

llO

" nions.

' between the ends of the bars.

shown for example in Figs. l and 3.Y

referring to Fig. 1 it will be evident that 'when the turn button is in acting position (in which condition it lies with its longest dimension extending from front to rear) the board is effectually prevented from moving in any direction. The nose of the button overlies strip` 1l and thus prevents the board from rising. T he stop 7 prevents the board from moving .forward while the shoulder 12b' prevents the board from moving backward.` The side strips 9, engaging the ends of therear cross bar 6, prevent the board from moving laterally. Thus the board 1s secure 1n its position. It is desirable that the under surface of the nose 12a center, in the preferred design, with the result that the frame normally tends to tilt forward and cause the side bars 4 to rest upon the stops or shoulders 1a formed at the side of the standard, as best shown in Figs. 6 and 7. By preference slots 4LL are narrower at the mouth than at the inner end and the trunnions 2 are horizontally flatvtened with the result that the slots will receive the trunnions only when the frame is held in vertical position, and when the` frame is afterward rotated to horizontal position it cannot be lifted oftl the trunparts are in the position of use the frame and the standard are interlocked, the principle being clearly illustrated in Fig. 5 of the drawings. ln the best construction the side bars 4 not only rest upon the shoulders l but also lie against the ends of the standard and thus prevent the frame from moving laterally. This is not essential, however, for in the best designheads 2 are formed at the ends of the trunnions and these would be sufficient to hold the frame against lateral movement.

By reference to the drawings it will be seen that the trunnions are located to the rear of the standard while the point of engagement of the turn button with the strip 1l is in front of the standard; consequently when the button is in action it holds the frame and superposed drawing board against rotation. In our construction we relieve the pivot pin 13 of undue strain in resisting this turning movement by so proportioning the parts that when the buttonis The consequence is that when the' acting, its rear end will rest upon the block 3. By referring to Fig. l, for example, lit will Ybe seen that as a result of this arrangement, if pressure be exerted upon the board to urge it to tilt backward (in a clockwise direction, Fig. l) there would, practically speaking, be simply a tensional strain upon the pivot, and there would be little, if any, tendency to bend it. As the resistance to tensional strain in the pivot is much greater side of the pivot, as best shown in Figs. 7- and 8, this recess accommodating the shoulder 12 when the button is turned to non acting position.

The operation and coaction of the various parts will be obvious from the foregoing de-A scription. When a student wishes to set up his board he first takes the standard l and secures it in the vise A. at the elevation which will best suit him. He then takes the frame 4, 5, 6 and, bringing it to vertical position behind the standard, passes the slotted bars 4 over the trunnions 2. He then rotates the `frame down until the bars rest upon the shoulders l of the standard, where the frame will temporarily rest under the action of .Y

gravity. He then lays the board upon the standard will be securely locked togetherV and held inthe proper relative positions.`

TWhen he has finished using the board all he l haste do is to turn the button to non 'acting position and loosen the vise, whereupon the board, frame and standard may be readily disassembled and put away. Asthe parts are all approximately fiat and somewhat of the same size they occupy but small space when stored.

It is not essential that the board be provided with a pocket of the precise form.

shown in Fig. l and elsewhere. lnstead of the pocket a simple recessed cleat marked 15 in Figs. 6, 9 and l0 may be employed. By making the cleat thick enough and long enough, as suggested, it may, at itsV ends, engage'the inside faces of the parallel bars 4 and thus prevent the board from moving laterally. If desired the cleat may assume the form shown at i6, Fig. il, the cleat being recessed, as before, for the reception of the nose of the turn button but being of somewhat different shape.

Having thus described our invention, what we claim as new and desire to secure by Iletters4 Patent, is

l. In combination, a drawing board having a recess formed in the underside thereof, a standard, a frame pivotally supported upon said standard and adapted to support said board, and a holding element pivoted to said standard and adapted to enter the recess in said drawing board for locking the drawing board, frame and standard in fixed relative positions.

2. In combination, a standard having a bearing surface thereon, a frame pivoted to said standard at one side of said bearing surface, a catch Jfastened to said standard, and a drawing board resting upon said frame, said catch being adapted to overlie a portion of said board at a point on the opposite side of the said bearing surface from the point where the frame is pivoted to the support, said catch thus holding the board down on the frame and the frame down on said bearing surface.

3. In combination, a standard, a frame pivoted to said standard, a drawing board resting upon said frame and having a recess in its under side, said recess and the frame pivot being on opposite sides of the standard, and a catch movably fastened to said standard and entering said recess when the board is in acting position to hold down that portion of the board and prevent rotation of the board and frame about the frame pivot.

4. In combination, a standard, a frame pivoted thereon, a shoulder on said standard cooperating with the frame pivot for holding said frame in normal position of use, a drawing board on said frame, said drawing board having a recess on the underside, a button, a pvot holding said button to said standard, the end of the button entering the recess in the board for holding the frame down on the shoulder of the standard, and a rest for supporting the rear end of the button when the latter is in acting position, to thereby relieve the button pivot of bending strain.

5. In combination, a standard, a block secured to the back thereof, trunnions on said standard, a frame detachably supported upon said trunnions, shoulders on said standard for engaging said frame at a point in front of the trunnions, and means for holding said frame down upon said shoulder, said means including a drawing board located on the frame and a Catch movably mounted upon said standard, said catch being adapted to engage said drawing board substantially as described.

6. In combination, a standard, a frame pivoted thereon at a point behind the stand ard, a shoulder on said standard at a point in front of the frame pivot for holding the frame approximately horizontal, means for preventing lateral movement of the frame, a drawing board upon said frame, a turn button engaging said board and exerting downward pressure thereon at a point in front of the frame pivot to thereby hold the board down on the frame and the frame seated upon the shoulder of the standard.

7. In combination, a standard, a frame pivoted thereon at a point behind the standard, a shoulder on the standard at a point in front of the frame pivot for holding the frame approximately horizontal, side bars straddling said standard for preventing lateral movement of the frame, a board on the frame, a strip fastened to the underside of the board, a turn button on said standard adapted to engage the strip on the drawing board for holding the board down on the frame and the frame seated upon the shoulder of the standard, stops on said frame for limiting the forward movement of the board, a shoulder on said turn button for holding the board in engagement with the stops on the frame, and a rest for the rear end of the turn button when the latter is in acting position.

In witness whereof we have hereunto subscribed our names in the presence of two witnesses.

PHILIP IV. HUTTON. EDWARD F. VORST. I/Vitnesses:

HowARD M. Cox, KATHRYN S. READY.

Copies of this patent may be obtained for five cents eac-11, by addressing the Commissioner of Patents. Washington D. C."

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