US469214A - oberlinder - Google Patents

Description

- l(Nolvlodel.) l 2Sh'eets-Shee-1i OBERLANDER.

EXTENSION TABLE.

No. 469,214. Patented Fabi.. 16, 1892-.

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UNITED STATES PATENT OFFICE.

CARL OBERLNDER, OF STETTIN, ASSIGN OR TO RICHARD SAALFIELD, ,OF

BERLIN, GERMANY. Y

EXTENSION-TABLE.

SPECIFICATION forming part of Letters Patent No. 469,214, dated February 16, 1892.

Application tiled May 28, 1891. Serial No. 394,388. (No model.) Patented in Germany July 16,1890, No. 56,641.

To all whom it may concern.-

Be it known that I, CARL OBERLNDER, of Stettin, in the Empire of Germany, have invented certain new and useful Improvements in Sliding Tables; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention has been patented in Germany, No. 56,641, dated July 16, 1890.

This invention relates to an extensible table in which two or more leaves may be inserted or withdrawn at will at each end in order to lengthen the table. In the former case the arrangement is such that by pulling a handle fixed below the end leaf this leaf can be Withdrawn from the table-frame and placed beneath the others, and by pushing the said handle this leaf can bereturned to its place on the frame. This handle is arranged so that it can be shifted to a small extent and is connected yby means of a rod to a cam of peculiar shape, so that by pushing steadily the first extensible leaf the leaf `next to it is raised by means of the raising device, hereinafter described, so that the leaf or leaves in before the raised leaf may be pushed under it. Vhen the leaves are required to be drawn up from beneath, leaf holders or grippers having the shape of hooks come into operation and carry away with them the leaves to be reinstated.

In the accompanying drawings, Figure l represents a longitudinal section through the devices embodying my invention. Fig. 2 represents a bottom plan view of the same. Fig. 3 represents a longitudinal section through the table-leaves, showing the devices for raising the edges of the leaves when the table is to be closed. Fig. 4 represents a longitudinal section through the leaves, showing the position of the closing device when the first leaf is to be closed. Fig. 5 represents a similar view, only the closing device is acting on the second leaf. Fig. Grepresents a longitudinal section through the-table-leaves, showing the devices employed in extending said leaves.

'Fig.7 represents alongitu dinal section through table-leaves and guides for the same. Fig. 9 represents in detail, partly in section, a side elevation of the devices employed 'in locking the table-legs; and Figs. lO and l1 represent in enlarged details, in side elevation, the devices shown in Figs. 3, 4., and 5 for closing the leaves. Fig. 12 represents a longitudinal section of my device, showing, particularly, the arrangements for limiting the motion of the leaves. Fig. 13 represents in sectional detail view the devices for stopping the extension of the outermost leaf and Fig. 14 represents a top plan View of thesame,partlyin section.

A is the main tableleaf under which the spare leaves are folded. This leaf is rigidly attached to a cross-bar A. l

Attached to the framing of the table are the ridges b b, upon which the guides B B move. These guides B B are provided with sides al a, forming a trough-shaped receptacle, in which the guides b b', fixed to the outer extension-leaf, hereinafter mentioned, move. The double guides B slide on a wedge-shaped `ascending ledge b, which is placed at such an angle that W-hen the leaves A2 A3 are drawn out they are raised up to the level of the fixed leaf A. In the bottom a of the outer case or guideB are placed side parts a and downjutting ribs a2, Fig. l2, which strengthen the cross-pieces as, carrying the ribs Z Z. These ribs engage with the sides a in the long slit or groove a4, whereby the loosening of the guide B is prevented While being drawn out or pushed back. Ribs of the same description are also afxed to the side parts a, andv grooves a5 are let into the guides b for the purpose of engaging therewith. The ribs a2 are so arranged that they strike against the table-frame F if the guide is extended s`o far that the leaf A2 is fully drawn out, as shown in Fig. l2. B can then go no fartherf The end of the guide b carries an iron piece. b2, screwed to it, Figs. l2, 13, and 14, whicharrests the forward movement of the groove a5. Thus when b2 strikes against the stop Z, Fig. 14., b', and necessarily A3 with it, must stop, as they cannot be further extended, Fig. l2.

The leaf A2 when extended is supported by the guides B B. The leaf A3 is supported in a similar manner by the guides h b. To provide the extended leaves with a more sub- IOO stantial support, I attach legs C C to the outer edge of the leaf A3. The leaf A2 is provided with a small angular piece of rnetal @,having a short arm extending downward. This arin engages the inner edge of leaf A3 when it is being closed, and the latter thereby forces leaf A2 Vto close also. The inneredge of leaf A3 is also provided with an angular piece n, pivoted at nand pressed by spring fr. This angular piece engages the leaf A2 when the table is being extended, and thereby extends said leaf.

When leaf A2 is fully drawn, the greater part of the weight of the slightly-raised leaf A (because the end support c has raised the leaf A in following the incline of b) is instantly thrown on the angle-piece n, Fig. 7, so that this must turn round the hinge n', as the weight .of the plate A more than counterbalances thev `pressure of the spring o".

The result is that now by drawing still f urther the handle f', Fig. 3, only the guide b',

with its fixed plate A3, can go farther until A3 is also drawn out to its full length, as shown in Fig. l2.

The devices E (shown in Figs. 3, 4t, and 5.) are for closing the table, and consist of a rod f, operated by handle f and provided with stop f2. The free end of this lever is pivoted at g2 to a cam g, which is pivoted at g to a plate on leaf A3. The inner edge of leaf A2 is provided with a hook-shaped spring h, set in a recess in said leaf. The outer under edge of leaf A3 is provided with a cross-strip e. To this strip I hinge the legs C C, connected by strip C at c. A recess is cut in the under side of leaf A3, and a piece of spring metal is pivoted to one edge of said recess. A spring t" is set in said recess to bear against said piece of spring metal, which is provided with an arm t', which engages the rigid catch la on cross-piece C. A springcatch 7c is secured to another side of crosspiece C and engages an elbow projection 2, set in cross-piece e. The spring-metal piece carrying arm 7l is provided with a knob c3 for depressing it into the recess in said leaf A3. In the contrivance shown in Fig. 9 for the leg C it may be necessary when one wishes to put the lowered leg back into its place to inove the hook 2 upward, which can be done in different ways. The support c, fixed to guide B, supports th'e leaf A. The leaf A2 is fixed to said guide B by means of an iron elbow d.

Both ends of the extension-table are operated in the saine manner, and I will therefore describe the operation of but one end only. Supposing the extension part of the tableto be closed, I first grasp the cross-piece e or handle f and by pulling steadily the leaves A2 and A3 are extended, the hook 'n on leaf A3 engaging the hook u on the rear side of leaf A2, and thereby preventing the leaf A3 being drawn alone. When leaf A2 has reached its full extending limit, the hook n disengages its inner edges and allows the leaf A3 to be drawn from under it and fully extended, as shown in Fig. 6. During this operation the guides B, b, and b have kept in position and supported the leaves A2 and A3. The knob e3 is now pressed, thereby disengaging the arm vl from the catch 7c and allowing the legs C to fall into a vertical position, in which position they are held by means of armv t2 engaging the springcatch la', as plainly shown in Fig. 9. If in extending the table the handle f is pulled, the stop or shoulder f2 engages the cross-piece e, through which the rod f passes, and thereby prevents undue strain on the cani g and its pivotal points g and g2. If it is now desired to close the leaves, the handle f is pushed in, thereby bringing the cam g in contact with the outer edge of leaf A2 and raising said edge, when a slight pressure on leaf A3 will slide it under leaf A2. The handle f is again pressed in, and the cani g, coming in contact with the spring-hook h, forces it against leaf A thereby depressing said leaves A3 and A2, so that they may be readily pushed under leaf A. The legs of course were first lifted into a horizontal position, where they were kept by catch-arm z' engaging catch 7o.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an extensible table, the combination of a hook or catch o, attached to one leaf, with an articulated hook n, attached to another leaf and arranged to catch over the former hook,

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and a spring fr, operating to force the said hook upward into such engagement, substantially as set forth.

2. In an extensible table, the combination of the cam g, pivoted tov the lowermost leaf thereof atits rear edge, withthe rod f, attached to said cam, the lhandle f', attached to said rod, and suitable guides for said rod and handle, the said cam being attached to the said leaf at one edge and extended under the contiguous part of the next leaf, so that it will lift the latter when operated by pushing in the said handle, substantially as set forth.

In .witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

CARL OBERLNDER.

Witnesses:

JoH. ADLER, ERwIN MULLER.

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