US1572571A - Extension table - Google Patents

Description

A. H. @TN

EXTENSION TABLE Filed July 5, -1925 2 Sheng- Sheet l Feb. 9,1926.Y I

, vv A.H.sToNE EXTENSION TABLE' FiledJuly 5. 1923 2 sheets-sheet z Patented Feb. 9, 1926.

UNITED STATES PATENT OFFICE.v

AND'EEW H. SToNE, or KANSAS CITY, MISSOURI.

EXTENSION TABLE.

AppIication led July 5,

To all 107mm t may concern Be it known that I, ANDREW H. STONE, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Extension Tables, of which the following is a specification.

My invention relates to improvements in extension tables which may be used to advantage in libraries, parlors, dining rooms, or wherever it is desirable to have al table that can be adjusted to compact form or eX- tended to give additional capacity when needed.

The table embodies one or more foldable leaves consisting of sections which` are hinged together, so that when not in use they may be folded and VSupported underneath the top of the table, saidleaves being at all times attached to the table to prevent their loss and also to provide a table so constructed that it may be easily and quickly operated. Y

The invention further provides a plurality of slidable leaves which may-be extended to permit the foldable leaves to be adjusted to active position, or contracted after the foldable leaves have been adjusted to inactive position.

An important feature resides in novel frictional locking mechanism whereby the slidable leaves may be reliably secured in their different positions. 'l

Another feature resides in means for adj usting the leaves vertically to bring them on a level, so that the top surface of the table will be of uniform height throughout.

Other features will hereinafter appear, and in order that the invention may be fully understood, lreference will now be had to the accompanying drawings, in which:

Fig. 1 is an inverted plan view of the table in extended position.

Fig. 2 is a longitudinal sectional view of the table on line II-II of Fig. 1.

Fig. 3 is a cross section of the table on line III-III of Fig. 1.

Fig. 4 is an enlarged fragmentary cross section on line IV-IV of Fig. 1.

\ Fig. 5 is an enlarged fragmentary cross section on line V-V of Fig. 1.

Fig. 6 is an'enlarged fragmentary cross section on line VI-VI of Fig. 1.V f

Fig. 7 is a broken plan view of a modified form of table. i

1923. Serial No. 649,446.

Fig. 8 is a fragmentary section on line VIII*VIII of Fig. 7.

In carrying out the invention, I employ a dependingrim 2 and a vframe consisting of longitudinal members 4 and 5 and transverse members 6. The longitudinal members 4 are 'removably Secured to the rim 2 by suitable means such as screws 7 while the transverse members 6 are secured to the longitudinal members 4 and 5 by suitable means such as screws 8. `The two endmosttransverse members 6 are provided at their undersides with legs 9. The frame above described and its attachments hereinafter referred to can be fitted into any table with a rim 2 when it is desired to convert such table into an eXtension table.

j 10 designates a pair of slidable leaves which constitute the table top when reduced to its most compact form. Said slidable leaves 10 are provided vat their undersides with guides 12, which run in longitudinal grooves 14 in the frame members 5.

16 designates pairs of foldable leaves adapted to be disposed between the slidable leaves 10 when the table top is extended as disclosed by Figs. 1 and 2, or folded beneath said slidable leaves 10 as shown by dotted lines Fig. 3, when the table top is contracted. The two sections of each foldable leaf 16 are operably connected by hinges 18 and one section of each leaf is provided with a bearing 2O which is swiveled upona rod- 22. l

The rod 22 is mounted at its ends in plates 24 having slots 26 dto receive screws 28, whereby said plates 24 are adjustably 'secured to the two endmost transverse members 6, so that the foldable leaves 16 may be adjusted vertically to bring them onl a level, when extended, with the slidable leaves 10. The rod' 22 is mounted at intermediate points inplates 23, having Slots 25, to receive screws 27, whereby said plates 23 are adjustably secured to'blocks 29, so that they Y may be adjusted vertically with the plates 24. The blocks 29 are fixed to the transverse frame members 6.

Vhen folded the free ends of the lower most sections of the leaves 16 rest upon inclined guides 30, which guide said lowermost sections upwardly over the adjacent longitudinal member 5 when the free ends of the l uppermost- Sections areswung upwardly by 'motion is substantially eliminated'.

Fig. 3... The guides 30 are fixed to a bar 32 secured 4to the undersides of thetwo intermediate transverse frame membersy 6.

Each slidable leaf 10 isv provided with a iixedly-inounted stop 34. The stops 34limitA the outward movement of the leaves l0` by contacting' the two endinost transverse meinbers 6, and also coact with dowels :36 in supporting the leaves 16, when extended so that they cannot sag at their hinged jjoints 38. i i

Each slid-able leaf l() is provided at --its underside with a fixed rail 40, spaced slightly below the leaf by an intervening' lillerstrip 4l. The upper surfaeefof the rails 40 are engaged by the inturned upper ends 42 of members 44 loosely connected to the'two endinost transverse frame members 6 by suitable means such as screws 48 passing through the slotted portions 50 of said members 44. Each member 44 'has a-n inclined s-urface 52 spaced beneath the adjacent rail 40 and slidably engaged by the transverse portion 54 at one end of a lockingl element 56. provided at its opposite end with a handle 58 and mounted'in a guide 6() secnredto the underside of the adjacent transverse frame meniber 6.

The handles, 58 extend to .within lconvei'iient reach at :one side of the table and when pulled outwardly in the directionof the arrow, Fig. 4, the transveix'se portions 54 of the locking elements 56 travel up the inclines 52 and frictionally engagethe undersides of the rails 40l to hold the leaves -lO-at any point of their inward or outward movement.

' In order to prevent the slidable leaves. 10

Vfrom fitting too loosely or too tightly upon the frame 2, l provide adjusting mechanism consisting of members` 62 andbolts 64 which latterl are connected to the former by heads 66 and nuts 68.. i

The members 62 have inturned ends 7 0V overlapping the upper surface of the rails 40, so that when the nuts 72 on the bolts 64 are tightened to draw the members 62 downwardly, they in turn will pull the leaves 10 downwardly upon the frame 2 until all lost Should the leaves l0 fit too tight-ly on the frame 2 the nuts 72 are loosened and the bolts 64 are pushed; upwardly to loosen the grip of the members 62 upon the rails 40; The bolts 64 extend through blocks 74 iixed tothe inner surface of the ends `of the rim 2 and provided with recesses 76 infwhieh the inembers 62 operate.

The longitudinal members 5 are provided `attheir ends with recesses 7S communicat- V o ing withtlie upper sides of theA grooves 14 and` through which the guides l2 ina-y pass should it'be desirable to remove the leaves l0 from the frame 2' forany cause. Preparatory to removing the leaves 10, the stops the recesses 78. The nuts 72 are then removed from the bolts 64, so that the same and their attachments may be lifted oil' with `the leaves l0.

y The operation brieiiy stated is as follows: lVhen the .table is in extended position as disclosed by Fig. l, the leaves l0 are iirinly locked against tlievadjacent foldableleaves 16 by pulling the locking members 56 outwardlyin the directionof the arrow, F ig. 4. lVhen it is desired to contract the top of the table to its most compact form all of the leaves 16 are folded to the position disclosed by dotted lines, Fig. 3, and the -leaves 16 are slidtoward --each other until they abut and the slides l2 abut stops 80 secured to the central portions of the longitudinal frame members V5 to center the leaves l0 upon the frame; rI`he locking members 56 which were previously slid inward-ly to release the leaves 10 preparatory to sliding the same toward each other, are then tightened as before stated to again lock said leaves l0 in their contracted position'.

Of 'course when desiredonly one 0r two Vof the foldable lleaves may be opened .to aetive position instead of all three as disclosed by Fig. l. f ,Y

'In the inodiiied form disclosed by Figs. 7 and 8, the slidable leaves 10a are provided their undersides with keepers 44a having depending'portions 45- which are brought together when the leaves 10ill are moved invard'ly towards each other` asl disclosed by The leaves 10a are then secured by the V- shaped terniin-al 54fL which engage the downturned' ends 45 of the keepers 44a. The V- -shaped terminal54a is onf a lock memberI 56 provided with a handle 58, and slidably mounted in guides 60a and a slotted plate Having thus described rmy invention, what I claim andl desire to secure by Letters Patent, is:

l. liia table ofthe character described, a frame, -a leaf slidably., mounted on said frame, a rail fixed to said leaf, a member mounted on the fra-ine lia-ving an inclined surface and overlapping said rail", and mea-ns guided-by said inclined surface into frictional engagement with the railr to secure the leaf aty any pointof its movement.

2. In a table of the character described, a frame, leaves sl'idably mounted on said frame, rails fixed to said' leaves, members mounted on the frame having. inclined surfaces and overlapping. said rails, foldable leaves arranged to fold beneath the slidable leaves when the-'same are slidr together, or be extended between said slidablel leaveswhen the saine are slid apart, and locking, elements projecting between the rails and said inclined surfaces to travel on the same and draw the overlapping portions iirmly into engagement with said rails and lock the same and the slidable leaves at any pointo their movement.

3. ln a table of the character described, a frame, a leaf adjustably mounted on said frame, a. rail fixed to said leaf, a member loosely connected to said frame and having intuined ends overlapping the rail and an inclined surface underlying said rail, and a locking member slidable on said inclined surface to cause the inturned ends to frictionally engage the rail and thereby lock the leaf at any point of its adjustment.

In testimony Wheeof I alix my signature.

ANDREW I-l. STONE.

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