US976639A - Draftsman's table. - Google Patents

Description

H; COTS.' DRAPTSMAN'S TABLE. APPLICATION FILED rms, 1910.

Patented Nov. 22, 19-10.

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wim/5885s.- A 5 14/ 4 ,f5 By @Mwwwwwwl 5f H. COTS. DRAPTSMANS TABLE. APPLICATION FILED ulm, 1910;

. Patented Nov. 22, 1910.

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TH: Nokms PETERS co., wAsmNcrN, n. c.

nwo/mers UNTTED STATES PATENT OFFIOE.

HIGINIO COTS, 0F SAN JOSE, COSTA RICA.

DRAFTSMAN S TABLE.

aveces.

Specification of Letters Patent.

To all whom t may concern:

Be it known that I, HIGINIO Cors, a subject of the King of Spain, and a resident of San Jose, Costa Rica, have invented a new and Improved Draftsmans rfable, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are: to provide a construction whereby the body of the table may be readily adjusted to various inclinations while maintaining in horizontal position a display shelf and structural elements connected therewith; to provide a receptacle for holding ink conveniently located on the tilting platform, and means for preserving the vertical disposition of the receptacle; to provide means for elevating the table and locking the same in adjusted position; and to provide a structure which is simple, eiiicient, firm and durable.

One embodiment of the present invention is disclosed in the structure illustrated in the accompanying drawings, in which like characters of reference denote corresponding parts in all the views, and in which- Figure 1 is a perspective view of a table constructed in conformity with the present invention; Fig. 2 is a side elevation of the saine, showing in full lines the table in a vertical position and in dotted lines the table in a horizontal position; Fig. 3 is a front elevation of the table, showing the same in an elevated and horizontal position; Fig. 4 is a cross section of one of the standard legs of the table, taken on the line 4-4 in Fig. 2; and Fig. 5 is an enlarged fragmentary view in plan, showing the details of construction of the ink receptacle and cover therefor.

One of the principal uses to which tables constructed as herein described and shown are put, is to serve as an easel or drawing table for use in copying from still life models, or from suspended flat copy.

The table proper consists of a board 6, iixedly mounted on the sides of which, and near the ends thereof, are battens 7, 7. Extended from the under side of the battens 7 are circular disks 8, 8 in which are formed perforations to receive short shafts 9, 9 and to form bearings therefor. It is upon the short shafts 9, 9 that the board 6 is rotated. The shafts 9, 9 are extended through perforations in leg extensions 10, 10, and are provided at the ends which rest inside the said extensions, with clip ears 11, 11. The said shafts 9, 9 are extended through the disks 8, 8, and at the outside thereof are engaged by screw nuts 12, 12. The leg extensions 10, 10 are provided with elongated tongues 13, 13, which t within grooves formed on the inner sides of stationary leg posts 14, 14. The leg posts 14, 14 are fixedly attached to spread bolsters 15, 15, at the ends of which are formed feet 1G, 16. The posts 14, 14 are connected and cross braced at the top by framing plates 17 and 18. The plate 18 is square edged, as shown particularly in Fig. 3 of the drawings. The front leg posts 14, 14 are rounded at 19, 19 and extended a little above the junction with the plate 17, which is mortised into the said leg posts. Tt is between the leg posts 14, as stated, that the leg extensions 10, 10 are adjusted.

One of the extensions 10, 10 is provided with a bolt 20, having a screw thread formed on the end thereof to receive a wing nut 21. The bolt 20 is extended outward from the extension 10 on which it is mounted, and through a slot 22 formed in the disk 8 and concentric with the shaft 9 therein. As stated, the board 6 may be tilted to any desired angle, pivoting on theshafts 9,- 9. This is permitted when the wing nut 21 is slack. When the desired inclination is attained the wing nut is tightened, jamming the disk 8 between the extension 10 and the washer usually provided under the nut 21.

To elevate the table there is provided a shaft 23, having screw threads formed thereonfrom the center line outward. On each side of the center line the thread is oppositely pitched. This forms two sections of the said shaft. On each of the sections is mounted a nut 24, having provided therein a screw thread adapted to engage the screw' threadI on the section of the shaft 23 to which it is applied. The nuts 24, 24 are pivotally engaged by rods 25, 25 and 26, 26. The pivotal mounting for the said rods with the said nuts is formed by bolts 27, which are passed through the said nuts and through thills 28, 28 fixedly secured to the ends of the said shafts. The pivot mounting thus formed permits the said rods to swing on the said nuts.

The rods 25, 25 are provided at the lower ends thereof with yokes 29, 29, which straddle the leg posts 14, 14 and are pivotally connected by means of bolts 30, 30 with brackets 31, 31 secured to the outer sides of the said leg posts. The mounting of the brack- Patented Nov. 22, 1910.

Application led February 3, 1910. Serial No. 541,720.

ets on the legi posts 14is fined, therefore,` as the ends of the rods 25,` 25 and the nuts.

24, 24 connected therewith are drawn together, the nuts 24, 24 are elevated,v alsofele':

shafts 9, 9. l/Vhen the nuts 24", 24 are drawn together, as stated, the vertical extension of' thereds 265, 26" iselong'atedf,thuselevating'the 9,. 9 and parts connected therewith. It is' to) provide? for the greater traveli of the extensions.: 10,10 that i the same arel provided with. slots 332, 33.

Thefshaftl2'3' hasv ii'Xedlly mounted on the endl thereof a crankA 34, the* handle 35fwhere or is grasped: by the operator: to rotate: the shaft-23 tof raise: and lower the? board 6;

Itis obvious that the: solidity' of the table is insured, -and that!- the travel?` thereof is guided by.4 the mounting of the. extensions 1.0 within the l'egfy posts 1'4, 14. The shaft 23 is suspended; in the:l nuts 24,.. 24.- only, and is raised and: lowered asA tire: said nuts` are raised! and. lowered' by the contracting` or spreading@ of the same: It is equallyr obvi ousthatithe shaft 23 may be rotatedt easily, and. lett in any position. desired.- without locking, thesmechanlica'll arrangement of the 24,v 24`v with theshaft. 23A and: the:y rods 25, 25-an`di 26,- 26 being sueh that the c'onstru'ction is held firmly against: relaxation or" depression: o'f the. tableby reason of weight? or pressure applied. thereon;

.As-shown? ini the: drawings; in Figs.. 2f and 3*, thefboard. 6. may be. disposed in a vertical andi ahoriz'ont'ab position, the. slot^v22l accommodatingthis. movement about. the bolt. 20. Itis-obvious that. the.' table may be arrested in4 alliintermediatelpositionsfbetweenf the: said verticali and horizontal; The. shelf' 36Y is, how'e'fer,7 maintained. in: a1 constantly horizont'al` positionduring-1 the various. angular dispositions of the said board.A The: shelf and' board areijoinedihyj hinges-37.1, 37.- The shelffy is supported in its?V position: extended fromlthesaidi hinges byrv arodf38. The rod 381 is pijvotallyv` mounted. at: 39v in' ear: clips 4'0fxed1y mounted uponE the under. side or the` shelf 36. Tli'ei rod"` 384 is likewise:A pivotaily mounted. at: 4a; in bracket: bearings 42 extended from the siderof' onelof the extenL sions: 10. The: relation of' the' pivot 39- to the center ofthe hinge`s537 corresponds-to therelation. between th'epivot 41 and the center of' theshaft 9.? Relatively speaking, the 1 shaft 9 andipivot 451. are.'l to thehingesf 37 andy pivot-i 39, xed points. The connecting members between the: sliaft- 9i 'and .the hinges 37'i on the one' s`ide,-a'n'd"` the! rod 38? between the pivot.' 41 and theiivot39 onlthe other side, are non extensle, therefore, as the table is @rotated about tlie' shaft'4 9,. carrying the shelff36 therewith, tliefv'ertioal extension of`-I the-l hinge andthe pivot 39 remain lnient of. the

relatively the same, thereby preserving the horizontal extension of the said shelf 36.

mil-led nut 44. Slidably mounted between the vertical members of the standard 43 is an extension 45. The extension 45 is fixed in extended position by means of a set screw 46, which is extended through the head of the' standard 43 and impi-nges upon the ext'ensi'oi'ii 45. The extension 45 is provided atthe upper end thereof with a hook 47, which permits thesuspension of fiat copy or other articles therefrom. As the shelf 36 isl at all times maintained in a horizontal position-l irrespective ofthe inclination of the board' 6, sof the' standard 43 and extension 45^ther`eof are'at alll timespreserved in a verticalf position irrespective of the inclination at which the board 6 is set.

It is also' necessary that the ink Well or receptacle shouldbe maintained in a vertical position, and for this purpose 1 have provided a casing 48". The casing 48 is formed of metall or other suitable material, and is pivotally mounted at 49 in bracket plates 50. Ther casing 48 is constructed in any suitable form`- to containv the' inky or ink well therein. The casing` isr providedwith a bracket extension 5l to which is pivotally connected a connecting: rod 52; The connecting rod 52 isqpivotally mounted at 53 to clip ears 54. The clip ears 54 are' ixedly secured to the shelf 36 and at ay distance from the line of thef rotary center of the hinges 37, equaling the?distancebetween the pivot 49 of the casing 48:V and the pivotal connection of the bracket 51 with the rod 52. This arrangeivots as. illustrated in the drawings in Figs.' 1 and 2, preserves at all times the` vertical disposition of the casing '48.

The casing" 4S is mounted in a recess formedin the top ofthe board 6, as shown in` Figi l of the drawings. The recess is coveredi bya flush plate 55. The plate 55 is pivotally mounted on dowels 56, and is su'pportedoniits inner edge by a latch head 57, which slides into a recess 58 provided in the said plate. The latchv head 57 is-mountcd1 onf the end ofa' stem'59, aty the outer end of which isformed a button 60. The stem 59 isencompassed by a spira-l spring 6l, so arranged' and disposed that the stem 59 is extended by seating the latch in the/holding Mounted on the lower edge of the board 6 is a scale rule G2. rlhe rule 62 is provided with scale markings 63, and with two or more angular slots 64, (Sil. rlhe slots 64 are provided at the divergent ends and at the junction of the said slots with rounded recesses G5, 65, adapted to hold in relatively fixed position the guide bolts 66, 66. By the formation of the slots (ist, (34, and the disposition of the same as shown in Fig. 3 of the drawings, it is obvious that the rule 62 may be shifted on the bolts 66, 66 to elevate or depress the upper and marked edge 63 of the rule 62 with relation to the edge of the beard 6. Then the bolts (S6 are placed in the lowei recesses 65 the rule is raised above the surface of the board (3. XV hen the middle recess G5 is engaged by the said bolt 66 the edge of the rule is flush with the surface of the board. lVhen the upper recess 65 is engaged by the bolt 66 the marked edge of the rule is below the surface of the board. For mechanical drawings it is obvious that this rule may be utilized to advantage both in the raised and lowered position.

Having thusndescribed my invention, what claim as new and desire to secure by Letters Patent is l. A draftsmans table comprising anextensible stand and drawing board pivotally mounted on said stand and shelf pivotally connected with said board in parallel relation to the pivotal mounting of said board; an ink well receptacle pivotally mounted on said board mid-way between the front and rear end thereof; a connecting rod uniting said shelf and said receptacle7 said rod bean ink well receptacle pivotally mounted on said board mid-way 4between the front and rear end thereof; a connecting rod uniting said shelf and said receptacle, said rod being pivotally connected to the said shelf and receptacle equidistant from the pivotal moui'iting of each to maintain the parallelity of said shelf and receptacle, a rod pivotally connecting said shelf and said stand to maintain constant, the angular relation of said shelf and said stand; and a vertically adjustable rack for said board attached to the front end thereof adapted to be raised to support articles on said board when the same is disposed in an inclined position and to be lowered below the surface of said board.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

`HIGrINIO COTS.

Witnesses:

SAMUEL T. LEE, ED. M. EVANS.

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