US1114677A - Drawing-stand. - Google Patents

Description

W. J. BROOKS.

DRAWING STAND.

APPLICATION FILED MAY 1, 1913.

1, 1 14,677. I Patented Oct. 20, 1914.

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WILLIAM JOHN BROOKS, or Lnrciiwoa'rn, ENGLAND.

DRAWING-Mann.

Specification of Letters Patent.

Application filed May 1, 1913.

Patented Oct. 20, 1914.

Serial No. 764,762.

board for the use of engineering draftsmen,

architects and the like, in which two rigid and substantial upright standards (suitably braced together) are provided with two inclinable arms or battens, one arm being hinged to each standard by a bolt and clamping nut or the like, the arm and standard being in contact over a broad area or circle to prevent slipping, the arms being fashioned to provide for the retention of suitable catches or pins associated with the drawing board, so that the drawing board, which rests on the upper edges of the arms may be secured at .any point along the length of the said arms. The stand is also provided with an adjustable tray for holding drawing implements.

The object of the invention is to provide a support for a drawing board which will be rigid, simple, and convenient to handle. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a front elevation of the draw ing stand as it appears without a drawing board; Fig. 2 is a side elevation of the drawing stand showing the drawing board in place; Fig. 3 an enlarged view of one of the supporting catches;- Fig. 4 a front view of the same catch; Fig. 5 a catch attached to the board and resting in a slot in one of the arms; Fig. 6 a view of the back of the board showing a modified catch or pin resting in a slot in the arm; Fig. 7 a modified supporting arm for the implement tray; Fig. 8 a plan of the instrument tray.

Similar figures refer to similar parts throughout the several views.

Two inclinable arms 1 are hinged to two upright standards 2 by bolts 5 and secured by clamping nuts or the like 7 so that the arms may be clamped at any required inclination. Arm and upright are in contact over a broad annular area to prevent slipping, and the surfaces of contact may be roughened, grooved or otherwise treated to provide a better grip. Broad plates or washers 6 are employed when the arms and upright standards are of wood, in order to distribute the pressure over the broad annular area, though these are unnecessary when the arms and standards are of metal, as in the latter case the metal of the arm immediately around the bolt serves in place of the broad circular plate and the annular surface of contact may be secured by having the arms fashioned with an annular area slightly raised above the general surface of the arms, so that contact with the standard takes place onthat annular area only. A series of holes 14 are provided near the upper edges of arms into which may be inserted the pin 16 (see Fig. 4) of the catch 8 upon which the board 15 rests. The lug 17 provides a hold for the finger and thumb. The catch 8 may be screwed to the board as shown at 18 in Fig. 5 and the pin 16 may then drop or hook into the slot 19 which is the hole 14 with one side open. The catch or pin may be screwed to the back of the drawing board as shown in Fig. 6.

The tray 13 for holding drawing implements is supported on an adjustable arm so that it is convenient to the reach of the draftsman whether he be sitting or standing to his work. The adjustable arm may be in the form of a jointed parallelogram formed of members 11, 12, 10; member 10 being screwed to one of the uprights 2; the parallelogram may be clamped in any position by the winged nut 28.

An alternative adjustable arm is shown in Fig. 7 where the rigid member 20 is clamped to 2 by bolt 23 and clamping nut 24, 23 pass ing through a fiat lug behind 20. A rod 21 attached to tray 13 slides in boss 29 at end of member 20 in which it is clamped by thumbscrew 22.

The upper surface of tray is provided with grooves 25 (see Fig. 8) for holding set squares or rules, circular recesses 26 for ink bottles or pins and recess 27 for pencils and the like.

The upright standards are held together by braces 8 and 4. Braces 3 may be at tached horizontally or diagonally as preferred.

The arms 1 may be clamped in any position from the vertical as shown at 1 (Fig. 2) to the horizontal as shown at 1*. The arms 1 may be cut across at line 30 (Fig. 2) and the parts rejoined by hinges, so that the lower parts of the arms may, if desired, be turned upward and inward out of the way of the draftsmans knees when standing to work with the board raised to the upper part of the arms 1. The uprights may have small lugs 9 (Figs. 1 and 2) by which the stand may be screwed to the floor.

It will be noticed that since the arms 1 are separately adjustable, each arm can be brought'into intimate contact with the under surface of the board even should the board be slightly warped, thus insuring that the drawing board is firmly bedded on its supports.

I am'aware that prior to my invention drawing stands have been made in which the drawing board is adjustably held on an inclinable support. claim such a combination broadly; but

I claim:

Ina drawing stand the combinationof I therefore do not tworigid and substantial upright standards, braced together, with two inclinable arms, one arm being hinged to each standard by means of a bolt provided with a clamping nut or the like, the arm and standard being in contact over a broad annular area to prevent slipping, the surfaces of contact being roughened, to enhance the gripping action, the arms being fashioned to provide for the retention'of suitable catches at a number of points along the length of the said arms, the drawing board resting on the upper edges of the arms and capable of being slid thereon and the catches serving to prevent the drawing'board from slipping down when the arms are inclined; all substantially as set forth. v

\VILLIAM J OHNBROOKS.

VVitnesses':

LIONEL GEORGE 'AITKE'N, ROGER PARKER;

(lollies oftliis patent may beobtained for 'fiv cents maty addressing the Commissioner of Patents,

Washington, D. 0.

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