US168154A - Improvement in extension-tables - Google Patents

Description

E. HAN'TscHE e. A. wAa-Nen.

Extension-Table'.

Patented Sept. 28,1875.

No.168g15'4.

fizvenos:

91.11.1.11 lilll l 1l N. PETERS, PHOTO-LITHOGRAPNER. WASHNGTON. D. C.

tracted. tended, the middle leaves being withdrawn. i

' UNITED .STATES PATENT @Errore EMIL HANTSGHE AND ADOLPH WAGNER, OF NEW YORK, N. Y.

IMPROVEMENT IN EXTENSION-TABLES.

Specification forming part of Letters Patent No. 168,154, dated September 28, 1875; application led February 26, 1875.

Be it known that we,.EMr r. HANrscHE and ADoLPH WAGNER, both of the city of New York, in the county and State of New York,

have invented an Improved Extension-'Hablar of which the following is a specification:

Figure 1 is a side view of. our improved extension-table, showing it extended. Fig. 2 is a cross-section thereof, on the line cc, Fig. 4. Fig. 3 is a sidev view thereof, showing it con- Fig. et is a top view thereof, ex-

Sirnilar letters of referenceindioatecorrespending parts in all the gures.

This invention has for its object to produce u an extension-table whose extension-leaves will be raised automatically into line with the endl leaves of i the table whenever vthe latter are extended, while they will also he automatically carried down beneath the end leaves whenever the table is contracted. The" handling of the leaves, the difficulty of iitting them into their respective places, Ste., are thus entirely avoided ,l and a table produced which, without material addition to its cost, will, in its operation', save considerable `labor to its Our invention consists, principally, in applying a rising and falling platform .beneath the intermediate leaves, said platform being, by inclines that are attached to the slides of the table, gradually raised or lowered as the table is either extended or contracted, so that it Will gradually raise or lower the intermediate leaves, and automatically store them away,

` whenlowered, beneath the end leaves of the pillar, or by legsrC,in suitable manner. To the frame Ais rigidly securedoneof the end leaves, D, of the table, and to the frame B is rigidly secured the other end leaf, E, of the table, the 4 two end. leaves, when the table is contracted,

meeting at the middle to complete the top of `a short table; F is the middle frame or slide of the table, being the connection of the two frames A and B, and consists of two side rails, a a, which are connected beneath by a crossbar, b. The frame A has projecting slides d firmly attached to it, vwhich slides are, by tongue-and-groove connection, joined to the inner faceord'aces of the slides or rails a.

The frame B has similar slides or rails e, that are, by tongueand-groove connection, joined, to the outer face of therside rails a. When the table is extended the slides d e are no longer displacement of the frame G, and also t0 y guide it during its upward and downward movement. The platform G has its sides formed into steps g It, said steps being inclined, as clearly shown in Fig. l, and resting on lugs t, that are attached to the slides d of the table-frame A, said lugs l having also slanting upper edges, as indicated by dotted lines in said iigures.

Now, Ywhen the table is contracted, the lugs Il are first. pushed with the slides d from under the lowermost step la of the platform G to under the next higher step g of the platform, and thereby the said platform is lowered to the extent of the height of the said steps. The continued movement of the slides d will cause the platform to descend still farther, until the inclined edge of the step gbears against the inclined edge of the lug t'. When from "the contracted position the table is extended, the lugs i will gradually cause the platform G' to be elevated as the lug i enters from beneath gL to beneath the step z.

In order to make the upward and downward motion of the platform G positive, and

insure that by the extension or contraction of the table the raising or lowering of the platform G is made absolute, it is necessary to construct a lock that will prevent the frame F from moving on the frameB as long as the elevating or lowering process of the frame G has not been completed, it being understood that the raising or lowering lugs i are connected with the frame A. This lock we have represented in Fig. 4. It consists of two levers, j l, both pivoted to the top of the rail a, which is mortised so they can be sunk beneath the upper edge. The lever j is forked, and receives a projecting lug from the lever l. The other end of the lever l carries a laterallysliding bolt, m, that is movable in a transverse groove of the rail a. When the tableis fully extended, a projecting lug of the lever j is struck by a shoulder, n, on the slide a, and the lever thereby turned on its pivot, so it will move also the lever l and carry the bolt m out` wardly into the way of the end of the slide e,

as in Fig. 4. When, thereupon, the table is contracted, the bolt m will prevent the slide e from moving on the slide a, and will, in fact, lock the two slides or frames B and F together, and cause the only displacement to take place in the relative positions of the frames A and F. Not until the frame G has. been lowered to the level of the several slides a d e will another shoulder, o, on the slide d strike the end of the lever y'and thereby cause the bolt to be withdrawn from its position in the way of the slide e, and allow the said slide and the frame B to movetoward the frameA. The intermediate leaves H I rest on the platform G, one leaf, H, having a downwardlyprojecting lug, p, thatpasses through aslot in the frame G, and into a slotted link, J, which is pivoted to the frame A, so that said leaf H will be controlled in its lengthwise movement by the motion of the frame A. The other leaf, I, has downwardly-projecting ears vq q, that enter recesses m at the sides of the slides e,

` and is therefore controlled in its longitudinal motion by the movement of the frame B. Now, when the table is extended, both leaves H and I rest on the platform G, which platform is elevated so that said intermediate leaves will be in line with the end leaves DE of the table. When it is desired to contract the table, `it is only necessary to slightly extend it in order to separate the two leaves H I, and then to put the end of the leaf I upon the leaf H, so that H may slide under I. When, then, the table is contracted, the platform G will at once commence to descend, and to take the leaf H, that rests on it, down with it, until such leaf is below the level of the leaf D. The slide G, being now moved into the frame A, takes the leaf H along with it, until the leaf H is partly vconcealed under the leaf D. The platform G descends still farther, allowing the inner part of the leaf I to drop down upon the Yleaf H, and a continued contracting' motion of the whole table will allow the leaves D E to close over the concealed leaves H I. Upon drawing the table apart, the frame B will first take the leaf I along with it by means of -the ears q q, until -said leaf clears the under side of the leaf D, whereupon the platform G will commence to be raised,

and to carry the leaf I up into a level with the leaf E. The continued extension will cause the-leaf H to be withdrawn by the frame G from under D, until it also finds its place on a level with the leaf D, whereupon the whole.

table is extended. Y

It can readily be seen that this system can be used with a larger number of intermediate leavesthat is to say, a third leaf can be put between the leaves H and I, while if any number beyond three leaves is used they will have to be attached by hinges to the remaining intermediate leaves.

We claim as our inventionl. In an exten sion-table for automatically storing away and raising the intermediate leaves, the combination of the self-raising platform Ghaving the inclined steps g h, andA bearing on inclined lugs t', that are attached to the slides l of the end frame A, with the downwardlyprojecting pins f, that extend through the'middle frame F, and with the end` frame B of the table, all arranged so that the f platform G will be raised by the act ofl extending and lowered by the act of contracting the table, substantially as specified.

2. In combination with the middle frame F of an extension table, having selfstoringy leaves, the lock composed of the forked lever j, and of the lever Z and bolt m, said lock being applied to the rail a of the frame F, substantially as and for the purpose specified.

3. The combination of the end frames A BA of a self-storing extension-table with the intermediate leaf H, having vthe lug p, that joins it to the link J of the frame A, and with the intermediate leaf I, having ears q, that connect it with the frame B, substantially asl herein shown and described.

EMIL HANTSGHE. ADOLPH WAGNER. Witnesses:

A. V. BRIEsEN, A. MORAGA.

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