US1810575A - Collapsible drawing table - Google Patents

Description

June 15, 1931. QUIRING 1,810,575

I I COLLAPSIBLE DRAWING TABLE Filed June12, 1929 4. Sheets-Sheet l IN ZN TOR.

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ATTORNEY June 16, 1931. K, QUIRING COLLAPSIBLE DRAWING TABLE Filed June 12. 19 29 4 Sheets-Sheet 2' 55 ME .JMIE 54 IN V EN TOR.

M MM A TTORNE Y June 16, 1931. K. QUIRING COLLAPSIBLE DRAWING TABLE Filed June 12, 1929 4 Sheets-Sheet 3 n wwwwmwm lllll I INVENTOR.

BY j

mg M ATTORNEY June 16, 1931. K. QUIRING 1,810,575

COLLAPSIBLE DRAWING TABLE 7 Filed June 12, 1929 4 Sheets-Sheet 4 INVENTOR.

' ATTORNEY 30 features of advantage,

Patented June 16, 1931 UNIT E; 7 STA nonnnmus QUIBING, or OAKLAND; camronnm COLLAPSIBLE DRAWING TABLE,

Application filed June is, 19%;). Serial N0, 370,447.

The invention relates to' a collapsible table 10 vide a table of the class described with auxiliary'shelves and supports whereby to facilitate and amplify its use.

A further object to provide drawer means in the structure.

Yet another objectof so mount and relatethe various elements of the structure that it'may be folded as a unit tov provide a particularly "compact assembly. A more specific object of the invention'is 20 to provide an improved the invention is to adjustable and collapsible frame 7 for mounting a drawing board and the like.

A more general object of the invention is to bring about a newcombination and cor- 2 relation of-parts in a device of the class described whereby'marked economies in nianufact'ure will be effected and theefficiency of the use of the device willbe enhanced.

The invention" possesses other objects Y and some of which, with the foregoing, will be set forth or be apparent in the following description of a preferred form of the invention whichis illustrated in the accompanying drawings, in

33 which Figure 1 is a -front elevati on 'of table embodying the invention and 1n set-up posltion, portions of the structure being broken away to disclose certaindetai-ls thereof; 2-2 inFig- =4 Figure 2 s a side section at,

urel. 7 I

Figure 8 1s asideelevation of the table in folded condition. Figure 4 is an Figure'5-is a plan section at 55 in Figure L l 1 g Figure 6 is a'section at 6 -6 in'Figure 5 Figure? is an enlarged face view of a pon- 50 tion of the showing-of Figure 2.

spe'ctively.

v enlarged face View of a'por 45 tion of the structure shown'in Figure 3.

:Figure 8 is a plan Figure 9' is vation of a shelf hinge shown detached.

and it taken at 9-9 in Figureil, a hinge view at 8 8 in Figure'7. an enlarged fragmentary 'eles mounting leafbeing f Figure 10 is an elevation taken at 1O--10 in Figure 9.

Figure 11is anenlarged fragmentary section at 11-11 in Figure 1.

perspective View of the board also being show and shows the auxiliary b V mounted thereon,

oard. of Figure 12 Figure12'is an underneath fragmentary an auxiliary board mounting on thetable, attaching means for for ' Figure 14 isan enlarged fragmentary section atll l l'inFigure 13. V

Figure 15 is an enlarged fragmentary section at'15 15.inFigure;13.

' As herewith particularly disclo vention, is seen to sed, the inbe incorporated in and with the structure of a drawingtable 16;

Laterally spaced side members 1 nected by cross members 19, 2O and21, cooperate to provide an, integral back unit 22 with the lower ends of 18 constituting the back of the table frame, the members 17 and and 18 conv rs PATENT OFFICE f the table,

table legs. Similar brackets 23 and 24am 7 mounted members Leg members 25 and 25 hinges 26, and

As shown,

bers. by means of tively. Casters on the upper portions 'of the side 7 17 and 18 respectively, extending forwardly from the said brackets back unit 22. l V I are pivoted to the brackets 23 and 2& respectively bymeans'of link bars 27 connect; intermewith lower the link bars 27 are pivotally secured to the legs and framememhinges28 and 29 respec- 30 are preferably provided on the lower'ends of the legs 25 and 25, for engagement along table as shown,

roller type with their axes of rotation parallel-to theplaneof member 31 connects cent their free ends whereby rangedto cooperatively de the back unit 22. A tie the'legs 25 and 25 adjathe legs are arlane and to a surface-supporting the the casters-30, are of the unit 22 may be adj ustably and positively controlled. Means are provided for retaining the brackets 23 and 24 for movement in fixed paths along the members 17 and 18, and for fixing said brackets in adjusted position, the structure shown being hereinafter described in detail. The back frame unit 22 is preferably arranged to retain a fixed angular relation to a plane supporting surface when the present table structure is set up thereon, and in the present instance is arranged to be and remain perpendicular to-such a supporting surface as the legs 25 and 25 arevariously disposed. For satisfying the latter condition, the linkage provided by the links 27 V is such that the floor engaging portions of as shown in second extended position of the casters are confinedto movement in a plane extending forwardly from the foot of the back frame unit 22 and perpendicular to'the plane thereof. In'this manner, the legs and 25 may be disposed parallel to and against themembers 17 and 18 respectively,

Figure 3 wherein the table is disclosed in folded-up condition, or extended as shown in Figures 2 and 13,"i't being noted that the legs '25 and 25 function as supporting elements of the table structure in a relatively large range of angular positions thereof. For bringing out the foregoing relation, a

the legs and associated elements is indicated in dotted lines in Figure 2.

The folding frame now described is arranged for the support of a table top, or board, 32 in angularly adjusted position. Theback edge of the top 32 is hingedly related to and carried by the brackets 23 and 24 by means of-hinges 33 secured to the top and said brackets. Support of the top'32 at the front thereof is provided by means of struts 34 hinged to the front portion of the top and at opposite sides thereof and having the lower ends thereof arranged for a footing on the legs 25 and 25. As shown, the struts 34 are arranged for swinging about aligned axes in planes ust inside of the planes of movement of the legs and parallel thereto, and are provided withpins 35 extending laterally "therefrom for engaging a selected one of notches or recesses '36 provided along the forward leg eclges. A tie member 37 se cures the struts 34together whereby they define apla'ne parallel to their axis of hinging, said tie memberybeing'somewhat above the free'strnt'extremitiesto leave leg room therebeneath.

It will now 'be clear that two adjustments are :provided for the top 32, namely, the

bottom face of the top person using-the table.

liked to :the members 17 general height adjustment provided through varying the elevations of the brackets 23 and 24, and the slope adjustment made possible through the engagement of the free ends of the struts 34 in different of the recesses 36, such adj ustability of the top 32 being an important element of the present invention. The pivotal axis of the top 32 with respect to the brackets is seen to lie at or below the whereby the latter may be folded flat against the upper ends of the legs 25 and 26 while the struts 34 are extended upwardly and between the said legs. In this manner, the top is arranged to be folded into parallel relation with the legs and back unit without requiring its dis- 'mounting.

As particularly shown, the recesses 36 comprise the notches of metallic rack bar memhers-38 fixed to the outer edges of the legs 25 and 25, and the lower ends of the members 38 are seen to provide brackets 39 to and between which afoot rail 41 is secured for the use of a In the present embodiment, the top and the various leg, strut and tie elements hereinbefore described are arranged to be formedof wood, but it will be obvious that some or all of the same might be made of metal without departing from the spirit of the present invention.

The brackets23 and 24 are of similar and complementary structure for mounting on the back frame members 17 and 18 respectively. By particular reference to Figures 4 to 8 inclusive, each of said brackets is seen to coinprise a generally triangular plate 42 for disposal in a plane perpendicular to that of the back rame unit 22, said plate-having perpendicularly related top and rear edges. A flange is provided peripherally about the plate, said flange extending transversely. of the plate and, in the present instance, inwardly of the adjacent table side edge. A'slide block 44 is provided'at and along the vertical flangeportion 45, said block being provided with a groove 46 opening from the rearward side of the block, the groove being rectangu'larly widened at its bottom. Flat bars 47 are fixed to and along the'back frame members 17 and 18 in spaced relation therefrom and in m'utually parallel "relation, said bars being slidably engageable in the wider bottom portions of the grooves 46 of the o )posed blocks 44 whereby a lateral separation of the blocks and bars is prevented and relative longitudinal sliding of the engaged blocks and bars is permitted. In the present instance, the bars 47 are seen to be mounted on spacer posts 50 and 18 whereby the weight of the parts is minimized. It is noted that the blocks 44 form parts of bracket structures which may properly be termed slides or slidebrackets. 7

eans are provided for disposing and securing the slide brackets 23 and 24 in corresponding adjusted positions; -As shown, a shaft 48 is journalled through and between the slide plates 42, said shaft being provided with a hand crank 49 at one end thereof and carrying like pinions 51 fixed thereto at points opposite the slide grooves 46. The outer faces of the bars 47 are formed to provide racks 52 and the blocks 44 andbracket flange portions 45 are in each case perforated between said .rack and the opposed pinion 51 whereby the pinions are arranged to engage the racks. In this manner, a turning of the crank 49 to rotate the shaft 48 is arranged to simultaneously raise or lower theslidesin like amount for adjusting the height of the back edge of the supported top board 32 or a complete rais ing for :efiecting a folding up of the table.

The legzhinges 2,6 and board hinges 33 are seen to have the fixed leaves thereof secured to and against the obliquely disposed forward flange portion 53 of the plate 42 at appropriate points thereof. The top flangeportions 54 of the plates 42 are arranged tocooperatively support a'fshel-fmember 55 mounted thereon and preferably extend from the rearward edge of'the board 32 to the back plane of the unit 22. For supporting the rear edge of the shelf 55, the flanges54 are seen to be extended ,rearwardly along the inner sides of the supflanges 57 port members 17 and 18 and the extensions thereof are reinforced by means of a vertical web 56 integrally connecting-their outer edges with the inner edges of the vertical flange portions 45. "The shelf 5'5 is designed for sup porting tools, ink, andthe like and is preferably provided with upwardly extending and 58 at the'front and rear thereof the shelf for retaming such articles thereon,

thus constituting a shallow trough. noted that the flange .57 is particularly important as a means for keeping articles from the shelf out ofthe V-shaped groove defined between the top and shelf at their abutment.

Brackets 61 extend upwardly from the top ends of the members 17 and 18 and carry between them a pane 62 0f transparent glassor the like. Preferably, and as shown, the lower edge of the pane member being grooved slightly to receive the pane, and being provided. at its forward top portion with a pencil groove 63. The pane 62 slopes backwardly fromthe groove of the member. 19 and isseen to provide, either alone or in cooperation with the grooves of the-tie member 19, a convenient mounting for sketches and transparent celluloid triangles and curves, yet offers no shadow on the board when interposed between the board and the li ht.

In the use of drawing tables of the type described, more table and storage space is he quentlyneeded than1s supplied by thetable top. 1, 2, 3 and 13, I provide the present structure means of hmges swingingbetwe'en a .ly extended pos tion upwardly to an upright position entirely between the members 17 and 18. Support for ,to points on forwardly of the shelf 65, folded.- Support strutends and shelf It is 62 registers with thetop .of the upper back frame tie member 19, said Accordingly, and as shown in Figures .with added shelf p space to more than double the area .of support provided by :the top 32 and shelf 55. As particularly shown, said additional shelf spaceis provided by upper and lower shelves 64 and 65 displaceably supported from the back frame unit 22 and beneath the top 32. Theshelf (iii-extends between the back frame members 17 and 18-and jis hinged to the lower tie member 21" by 66 whereby it is'arranged for horizontal and forwardthe outerend of the shelf 65 is provided by chains 67 extending therefromwhen in said upright position.

Theupper shelf 64 is seen to also swing between the members 17 and ,18 as well asbetween the legs25 and 26 andbetween the bars 27. Hinges 68 connect the rear part .of the shelf 64 with the inner sides of the members 17 and 18,. and the shelf 64 is arranged to be swung downwardly to lie between and forwardly oflthemembers 17 and 18, and when the table is of the forward edge ofztho shelf-64 is afforded by means of struts 71 hinged theretoand engaging on the front portionof the-shelf 65. "Preferably the lower the members 17 and 18 above the {points thereof-to which the shelf extends are provided with'cooperating pin-andesocket connections for preventing a lateral displacementof the strut bottom, this structure being disclosedin detail in Figure 11 wherein pins 72 and sockets 7 3 are shown as provided respectively on and in the shelf 65 and struts. The hinges 74 of the struts 71 arepreferablyof the triple-leaf type and'are so connected between the shelf and struts as topermit a slight lifting of the shelf without releasing the other from their engagement withthe shelf 65, such fleeing indicated in Figure 13.",When

the table is folded, ,thestruts 71 arearranged to lie between the shelves 64 and 65 v Referring now tothestructure of each the hinges 68,

leaf 74 thereof is fiat and arranged to be mounted on the under side of the shelf '64 with its knuckle portions directed rearward strut ends of the members 17 and 18. Flanges 77 and p the details of whichar'e disclosed in Figures 9 and 10, it is'seenthat'one 4 the rails 86. A cleat vided across the front edge of the plate 85 for working surface. WVhil'e of the top 32 may be approached somewhat to permit the aforesaid folded disposal of the'shel-f 64. It is further seen that the-hinge plates 76 have perforated bosses 79 extending therefrom'to provide anchors for the upper ends of the chains 67.

A sliding drawer 80 is'mou nted on and beneath the shelf 64, said drawer being seen to fit between the hinges 68 and to be slid- ;ably-supp'orted on and between parallel depending plates 81 fixed beneath the'shelf. As shown in Figure 1, the plates 81 are provided with tongues s'lidably engaging complementary grooves provided in'the opposed side members 82 of the drawer. It is noted that the provision of the drawer 80 beneath the shelf increases the required forward extension of the hinge leaves 75 by the depth of the drawer. I I

Itwill now be noted that the top 32 comprises a plate member 85 mounted on and between side edgelrails '86, said plate being flush with "the said rails at its edges thereat.

'Thehinges-atthe front and rear of the board are seen to be secured to the lower edges of 87 ispreferably proretaining'removalble drawing boards and the like onithe board when the latter slopes. The now-described structure of the top 32 is a preferred, though not essential one, and the rails 86 are further utilized in a manner to now be described.

As is well known, artists frequently have needof a vertical, or substantially vertical.

the desired disposal with the structure here-inbefore described, means are preferably included with the prese'nt structuretoprovide a'truly'vertical working surface when and as required. Referring "particularly to Figures 12 to 15 inclusive, it is seen that the aforesaid means comprlses an auxiliary board'88 and means for mounting thesame on the top'3-2. Adjacent and about'midway of the side edges of the board 88,-said board is provided with a pair of hinge leaves 89 having coaxially related knuckles or eyes. The hinge leaves '89 are fixed beneath the board 88, and the eyes thereof are arranged for coaxial engagement with the eyes of hinge leaves '93, the latter being of a. special structure. 7

Transverse sockets'or'holes 9-1 are provided 'in th'e rails 86 adjacent the frontends there'- of, the axes of said sockets being parallel to the plane'of the top 32. The leaves 93 are seen to comprise two perpendicularly and in tegrally related flat'portions'95 and 96,'with the leaf portions'95 providing the necessary hinge eyes and arranged'to overlie the upper top face at opposite side edges thereof. Pro- .jections or bosses 97 extend transversely from the leaf portions 96 at the same side thereof as do the portion's95, and said bosses are arranged to engage the sockets 94: when the hinge leaves 93 thus mounted, the eyes of cooperating hinge leaves 89 and 93 are arranged for registration whereby hinge pins 98 may be inserted through the aligned eyes for pinning them together. Since the board 88 is an auxiliary attachment for the table, place but are rethe pin-s '98 are not fixed in movable for dismounting the board 88. hen the board is dismounted, the hinge por tion 93 may, of course, be removed without releasing screws or other positively acting fastening means.

Links 101 1 are hingedly mounted on the board 88. above the hinge leaves 89, said links being longitudinally slotted for the adjusted reception of bolts 102 therein, said bolts being mounted in the rails 86 at intermediate oints thereof. As particularly shown, the

olts 102 are of the wagon-bolt type whereby they have a polygonal shank portion adjacent their heads, and said bolts are removably disposed in complementary perforations 103 through the rails 86 whereby they are held against rotation, the bolt heads being innermost. The extending portions of the bolts 102 are disposed through the slots of the links 101, and wing-nuts 10 1 are applied to'the outer bolt ends for clamping the links between themselves and the rails 86. In this manner, the board 88 is arranged to be adjustably disposed and fixed at any desired angle, and the use of the mounting means therefore requires only the provision of the sockets 94 and perforations in the rails 86.

From the foregoing description taken in connection wlth the accompanying drawings,

the advantages of the construction and method'of operation will be readily understood by those skilled in the art to which the invention *app'ertains, and while I have described the 'principleof operation, together with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such changes may be made. when desired, as fall within the scope of the appended claims.

Having thus described my invention, I claim as new anddesire to secure by Letters Patent of the United States the following:

1. In a folding table, a back frame portion including upright side'members, brackets adjustable'on and along said side members, a top supported in part on the brackets, a leg pivoted to a said bracket, and a strut hinged to said top and leg to support said top in position for use.

2. In a folding table, a back frame portion including upright side members, brackets-adjustable onand along said side members, a top supported .in part on the brackets, legs adjustably engaged with said pivoted to said brackets, and struts hinged to said top and engageable with said legs to complete the support of said top in position for the use thereof.

3. In a folding table, a back frame portion including upright side members, a crossmember securing said side members adjacent the top thereof, and a pane of transparent material mounted on said frame above said crossmember and sloping upwardly and backwardly therefrom to provide a supporting backing for relatively-flat articles disposed in generally upright position thereat- 4. In a folding table, a back frame portion including upright side members, brackets adjustable on and along said side members, a

top hinged to said brackets for support in part I thereon, legs pivoted to said brackets, and

struts pivoted to said topand removably en- I gaged with said legs to complete the support of said top, said top and legs and struts being arranged for disposal in parallel adjacency to said side members without disconnection thereof.

5. In a folding table, a back including upright side members, brackets ad- I constrained to move in a common and predejustable on and along corresponding upper portions of said side members, legs pivoted to said brackets, and links connectingsaid legs with points on said members below the said brackets whereby the free ends of the legs are termined plane.

6. In a folding table, an upright back frame'portion including upright side mem-' bers, brackets vertically adjustable on and including an upright member, a bracket adalong said side members, means for disposing and securing said brackets in a plurality of adjusted positions thereon, a shelf carried horizontally by and between said brackets a top member having the back edge thereo opposite the front edge of said shelf and hingedly carried on said brackets, and means for adjustably supporting the front edge of said top.

7. In a folding table, a back frame portion justable on and along said member, a top supported in part on the bracket, a leg pivoted to said bracket, and a strut pivotally engaging said top and releasably engaging said leg to support said top in position for use.

8. In a folding table, a back frame portion including an upright member, a bracket adjustable on and along an upper portion of said member, a leg pivoted to said bracket, and a link connecting said leg with said member below said bracket whereby the lower extremity of the leg is constrained to movement in a predetermined straight-line path as said leg is pivotally moved.

In testimony whereof, I affix my signature.

KORNELIUS QUIRING.

frame portion I

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