US1457889A - Drawing stand - Google Patents

Description

June 5, 11923. 11,457,889

H. C. HINRICHS DRAWING STAND Filed March 24 1920 2 Sheets-Sheet Patented dune 5, 1923..

unites stares HENRY C. HINBICHS, OF NEW ORLEANS, LOUISIANA.

DRAWING srann.

Application filcd lliarch 24,1920. serial No. 368,362.

To all whom it may concern:

Be-it known that I, HENRY C. Hmmorrs, a citizen of the United States, residingat New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful Improvements in Drawing Stands, of which the following is a specification.

This invention relates to drawing stands and more particularly to a movable stand or support for thedrawing board.

The primary object of the invention is to provide a. folding structure of a portable character which can very easily be transported from placeto place and set up upon asuitable support to provide a supporting frame for a drawing board, thereby alleviating to a material extent the lack of a standard drawing table.

A further object of the invention is to provide a supporting structure of the character referredto wherein an adjustable element is provided for supporting the drafting board at any desired angle.

With the above and other objects in view the invention consists in the-details of construction, combination and arrangement of parts as will hereinafter more fully appear reference being had to the accompanying drawings whereinj Figure 1 is a view in perspectiveof the invention in its set up position. I

Figure 2 is a side elevation with portions broken away to disclose the manner in which the various units of the frame are joined together to provid'e a rigid structure,

Figure 3 is a plan view showing the legs in folded relation, H v

Figure dis a vertical longitudinal section through one of the side bars of the board supporting'frame, disclosing the manner in which the strut is concealed therein, and

Figure 5' is a detailed view of the crossof preface it may be stated that serve as a suitable resting place orbase for the stand embodied in the present invention. This stand comprises a square, main frame 1 having the side bars 2 provided upon their arranged in successive, spaeed relation along each bar and penetrating a depth sufficient for the purpose in view. The front'and rear strips of the frame are each provided with transverse openings adjacent their respective extremities, forming sockets for the pivot end of the leg members. Connected to frame 1 by means o f-hinges at is a drawing board supporting frame 5 which is likewise square in formation and of a size approxi-. mating that of the main frame the sidebars 6 however of the board frame being each provided with -a longitudinally extending slot 7 within which is pivoted astrut 8 as illustrated in Figure 4: of the drawing. The strut 8 is preferably to be housed within the slot so as to be concealed from view, and this may, of course, be accomplished either by constructing the strut of a'width narrower "than the width of the slot or by having the upper and lower edges of the'slot parallel with the upper and lower edges of the side strip to which it is pivoted. The free swinging end of each strut is beveled as indicated at 9 so as to rest firmly on the bottom of a notch 3 when inserted therein for purposes of maintaining the frame at an angle as illustrated in Figure l, the points of the strut holding the strut against slipping when the angular position of the strut, withfrespect to the particular notch with which it is engaged, does not permit the beveled edge to rest firmly on the bottom of therecess,

The hinges 4 are fastened to the frame member 11 which, it isto be noted,- is of heavier material than'the'o'ther units of the frame and is provided with a flat face 12 against which the drawing board would rest when disposed upon the supporting frame '5.

Mounted below the main frame 1 are a pair of side supports'or legs 18 which con sist of spaced vertical standards lrigidly connected together andbraced by the hori zontal braces 15 and diagonal braces 16.

Each standard 14 has affixed to its bottom edge a cushioning pad-17 of rubber or other suitable material which may be adapted to not only prevent the stand from scratching the surface upon which it may be supported but also to prevent any walking of the upper-faces with suitably formed notches 3.

frame during the process of drafting. Any

suitablev number of these pads may be provided asYlcircumstances require [and they may be easily provided on each leg member by afiixing a short standard to the lower nost horizontal brace 15 and attaching the pad to such auxiliary standard. These supporte I ing legs are adapted to be aflixed to the op- .sociated withtheframelby means of the posite ends of the mainframe, inwardly of the side bars 2 thereof and are pivotally aspivot pins 19 which-enter the socketop'enings provided int-thev Iside :strips of the main frame as previously pointedlout. 'gWhen in supporting'position the legs are held apart blyvthe cross brace-20' which consistsof two ngated' stripsLfiZl and 22 pivoted intermediate theirextre'mities as indicated at 23.

'lThis brace is disposed between-thesupporting leg and expanded so that the shoulder bearing ends 24 .of one strip engage the Ydiagona-lly bpposedhorizontal braces of the tWov-legsqin the manner shown in Figures 1 Y and"? of the-drawing, .while the shoulder bearing ends 2510f. the other bar are likewise engaged withthe opposite diagonalr'braces 'Iofthe ftw ollegsl Inthisway, the legs are rigidly heldlaplart' and prevented from any w'abbling :which iwouldltend to unsettle a stand interfere. with the. drafting work.

To further, augment therigidity of the structure ,antie plate 26' extends vtransversely across .the: frame from one brace to another of'the leg members andhas provided adja- "cent -its brace supported .end .a depending lug 27 which is adapted .to :be accommodated in. anopening formedinfthe lowermost sup- ,portingbraces 15. Both -thecr oss brace 20 andthe tie platethus serye to reinforce the stand andtomaintain it rigid. v r

In operation, ,thestandqis set upon an ordinary table or,0ther suitable base, the

legs of the stand being rigidly braced by means ofthetiegplateand cross brace preyiously referred to and the drawing board is laid upon the supporting frame 5.. This ,frame; 5 may be supported horizontally upon the main-frame ;l3 and the areabelow the boa may be s das a sui ab y p o e t space withinyvhich to place the 'necessary. in trument and other cc s i s, o ver, the board ,may be held in an inclined l re- .pos itiqnmerely by raising the frame 5 and P mittin t e s u 181m drop d wn into engagement with suitable notches 3, the struts beingv ,of suitable; material and stren ho adequa e y;-.sapp re r in tsl n l 'po 1011; Aft us the sta d .e 126 re d y Peke a ay in Eay nk. o

e isle-t a e Ymersly by r m ie e cr ss .brae ea id fie bl at eadliql gi he p v ted lleseleira dl 9.; a 'rae 1 1111 'trated in Figure 3 of the drawing and then releasing the; strut 8 .from: the notches so as .ilQpGfIIllt the frame..5-.to; collapseupon the main frame 1. It will thus be seen that in i folded --.cond,ition ;the stand, occupies a to be understood that astand of this character may very readily be'made in various sizes and thepartsof the stand of such ma-. terial asis most .suitablevoradapted for the purposes in View, suchpchanges in regards to proportion, style andfarrange nent of parts being permissible as fall with'in the scope of the ..appenided claim.

.Having thusdescribed my l-i-nvention what I claim as new and,desire to-secure by Letters -Patent is 1 A portable and collapsible-stand for drawing 'boards comprising a main frame including longitudinally extending front .and

vrearbars and transverse endbarsall disposed in the same plane, the transverse. end lbars having spaced notches in the upper face thereof, end legframes for themain frame, 1 each includingv a transverse-cross bar having trunnions formed on the terminals thereof and corner standards, the longitudinal barsof the vmain frame having bearing openlngs therein-adapted to receive the trunnionsof the sidebars. of the" legframes, the leg 'fra1nes:being adapted to L f01d .within themain frame and lielflushlwith .theupper and lower surfaces ;.thereof, removable. cross braces adapted-toexten'd from to the other for holding-the leg'framesinla' set-up position, and a. drawing" board frame of substantially the same size .a spthe main frame including longitudinal front .andrear bibls H slotted tran erse endbars, means pivqtally connecting the frontbar of -.the drawing board frame with the front bar of ,,the main frame, and pivoted I-StrutSZcar-ried by, the end bars of the drawing {frame .and adapted to. -b'e disposed 1 within {the .slots thereof and to lie flush aWith theiupper-and e su aces ref the d awing frame, wh n tre ermin ls .9 the strut b i g" a ap to fit in any one ,of the notches of the r-main readjusted res n.

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