US1670145A - Lap table - Google Patents

Description

May 15, 1928. 1,670,145

F. H. FARRINGTON LAP TABLE Filed March 21, 1925 2 Sheets-Sheet 1 May 15, 1928, 1,670,145

F. H. FARRINGTON LAP TABLE Filed March 21, 1925 2 Sheets-Sheet 2 W The lowerend of the member 7 is pivoted Patented May 15, 1928.

q-ru r u ss- FRANK HnnnYFARnmsTon, or inrnivrrnsemm, nLnBAMa.

,LAP TA E.

1 Application fil ed March 21, 1925. seriarnnl z iii.

This invention relates to avlap table and the object of my invention is to construct a simple'fadjustable folding table which may be adjusted to any angle supporting a book or work in om ntum manner for use. In the accompanying drawings: Fig. 1 is a front view showing the table open for use. v I

Fig 2fis a perspective viewlooking from the rear. V Fig. 3. is a transverse sectional view tl irough the table when folded. Fig.4 isa detail socti-on'alview taken on line' l dof vFig. 3. t I p Fig. 5 ma perspective view of the table folded, when not'in use.

The numeral 1 indicates a .base board. The numeral 2 indicates a top board or book rest. The numerals indicate links pivoted as at lt- 1 to one edge of the base board and pivoted as at 5+5 to the opposite edge offthe top board 2. v .1 j,

.Interposed between the base board and the top board 2 are front and rear collapsible frames. The rear-frame consists of crossed members 6 and 7 pivoted together as at 8.

as at 9 to the baseboard, the opposite end thereof, being pivoted as at 10 to the member 11, slidably received upon a track 12 secured to the undersideof the top board. Athu'mb nut 13 provides'a means for adjusting the member 11 horizontallyalong the track 12. Theupper outer end of the member 6 is pivotally connected as at'l l to the rear edge of the top board 2, while the lower opposite end is pivoted as at l5 -to the sliding member 16, received upon a track 17 secured/tothe base board 1. Athumb nut 18 provides a means for 'adjustably securing the member 16 to the track 17. The numerals 19 and 20 indicate two crossed members pivoted as at 21.

These crossed members are arranged at the front end of the lap table, the member 20 beingpivotally connected as at 22 to the base board and having its upper opposite end pivotally connected as at23 to the slid- 'ing member 24, received upon a track 25 secured along the upperedge of the top board 2, and the thumb nut 26 provides the means for adjustably securing the member 2% to the track .25. The upper end of the crossed 'member1'19. is likewise pivoted as at 27 to the top board 2 having itslower end pivoted as at-28 to the sliding member 29, received I upon thetrackBO secured to'the "outeredge of the base 1. A thumb nut 31 provides means for adjustably securing the member 29fto the 'track"30. v

When it is desirable to board '2'relative to the base 1,;the top board 2' is raised'manu'ally to the desired'height and anglewher-eupon the thumb nuts 13,118, 26, and 31 aretightenecl to holdflthe top board in the desired angle. The links 3 3 serve to eliminate"anylateralmovement of the board after being adjusted tofthe desired height and angle. As iso'bviou's, any[angle or height maybe obtained within the rang-e of the lin'ks3 by independent adjustmentof tjhe front and rear crossed supporting mema just the m 1 The numeral indicates dialpins which are removably received in openings 33 in the v top board. NVhennotin use, these dial pins are adaptedto be received in the block 34 arrangedupon the baseboard. ll 3 i ""It' is obvious that more or less, slight changesmight be made as to the details of construction without departing from j'the' general scopeof my invention, therefore, I 7 do not W1sh to'be limitedto theexaot struc-.

it'ure' as shown.

claim; i L A folding lap table comprising a base board and a top board, transverse links .in-

terposed betweenthe base and top boards and pivotaljly connected to the oppositeedges thereof, front and rear. crossed members interposed betweenv the base andtopboards,

the upper and lower ends of said front and nect'ed to thebaseand 'top boardson one side, tracks secured a to the opposite side to the lower ends of said crossed members whereby the hcn'izontal movement of the said adj ustable members will effect a vertical movement with said top board.

'rear crossed members being pivotally'com .2. A folding. lap table comprising abas'eboard and atop-board, transverse end links crossed members interposed between and'lon- 1 gitudinally of theitop and base-board, .one set of the upper and lower ends of the crossed members being pivotally, connected to the M top, and baseboard, the opposite t base board and top member, adj ustable mem- 9 I be-rs adjust-ably securedjto said tracks and pivotally secured to the opposite. upper and I of the upper and lower ends being'pivotally connected and horizontally adjustable relative to the top and base-board, whereby the top board may be'iadjusted vertically at an angle. a

" 3. A portable lap table includingbase and top boards, ,independen't pairs of crossed members interposed between the base and top .boards, and pivotally connected therewith,

meansforpermitting at least two of said crossed members to have slidable, pivotal and adjustableconnection with at least one of the-boards, [and means permitting independent adjustment of the pairs of crossed members.

H 4. A portable lap tableiincluding base and top boards capable'of being foldedinto close proximity to each other andfapproximately parallel, independent pairs'o'f crossed memedges, said pairs of crossed mem' b'ersbein'g independent and disconnected from" each other, and'means, permltting at least some of baseboard.

bers interposedbetween the base and top boards and pivotally connected therewith,

said crossed members to have slidable', pivotal and adjustable connection with at least one of the boards and in a (plane approximately parallel therewith for angularly and vertically adjusting the top board upon the 1 6. A table I members 7 interposed therebetween and having a universal vjoint connection with each, said 'crossedmembers'being collapsible betweentheboards, and adjustable means for saidfcr'o ssed members for permitting said boards to be adjusted relative to each other;

7. A table including 'top and base boards having crossed members interposed therebetween, a universal joint conection between at a least some of sa1d crossedmembers and the boards, and adjustable means for said crossed members for adjusting the top and I 1 base boards relative to each other.

8. A portable "lap table including base and top boards, independent pairs of crossed members interposed between the base and top boards and pivotally connected therewith,

means for permiting at least two of said crossed members to have .slidable, pivotal and adjustable'connection with. at least'one including boards. with crossed of the boards for a'ngularly and' vertically adjusting the top and base boards relative to each other, and links extending approximately at'right angles to the crossed members and pivotally connected with'the boards for limiting relative movement therebetween.

9. A portable lap table including base and top' boards, independent pairs of crossed members interposed between the baseand top boards and pivotally connected therewith at points adjacent the edges thereof, and means for permitting at least two of said crossed members to have slidable, pivotal and adjus'table connection with at least one of the boards, and for angularly adjustingan ed e of the topboard to which corresponding en sof any pair of links are connected in any plane parallel to the corresponding edge of the base board. a

10. A portable lap table including base and top boards capable of'being folded in close'proximity to each other and approxiv mately parallel, independent pairs of'crosse'd members interposed between the base and top boards and pivotally connected there with at points approximately adjacent the. opposite edges thereof, and means for permitting atleast two of said crossed members to have slidable, pivotala'nd adjustable connection with atleast one of theboards and for angular-1y adjusting an edge of the top,

board to which corresponding ends ofany pair of links are connected in any, plane parallel to the corresponding edge of the base board.

11. A collapsible and reversible lap table comprising two relatively thin boards, each of which is designed for nseas a table, independent crossed link units having relative movement at their crossing points,'located be-' tween and connected with said boards, all of said connections being pivotal, and at least some of said connections beingbothpivotal and slidable on at leastone of said boards, whereby, when one of said boards is used as a'writing surface it will be closer to the body of the user than the opposite boardv used as a reading surface in reversed position. v A I v 12. A device of the character described,

cated therebetween, and "having fixed pivotal connection with the opposite edges of said boards, whereby each pivotalpoint may become an independent center of adjustment or movement of the boardfand adjusting means located between the two, boards, and

7110 including two boards,confining members lohaving universal joint connection therewith as well as adjustable connection, whereby to permit the rocking of the uppermost board to various lateral positions and inclinations, and the raising, lowering, and

locking of said uppermost-board. I In testimony whereof I afiix my signature; FRANK HENRY FARRINGTON;

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