US1855829A - Leaf adjustment for extension tables - Google Patents

Description

April 26, 1932. M. FOX 1,855,829

LEAF ADJUSTMENT FOR EXTENSION TABLES Filed July 7, 1930 gwuentoz L/ ar/z'n E700.

Patented Apr. 26, 1932 UNITED STATES PATENT OFFICE MARTIN FOX, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SENG COMPANY, OF

' CHICAGO, ILLINOIS LEAF ADJUSTMENT FOR EXTENSION TABLES Application filed July '7, 1930. Serial No. 466,256.

My invention relates to refectory tables of that special type having extension leaves at opposite sides of the top carried'by rails slidable on the supporting frame for housing said leaves in spaces provided therefor between the supporting frame and top when it is desired to reduce the size of the table, such as illustrated and described in my application for patent filed January 29, 1930,

Serial No. 424,395.

In extension tables of this general type having the leaves rigidly secured to the outer ends of the rails or wood slides supporting the same for movement to and from housed position with relation to the top accuracy is required in the construction and assemblage of the working parts to provide that when the leaves are in extended position at opposite sides of the top the upper surfaces of said leaves will be on a plane with the upper surface of the top, and as the slides as well as the center rail and outer edges of the crosspiece supporting the top of the table with which they engage are usually made of wood any wear on these parts will affect the adjustment.

My present invention therefore contemplates the provision of means for connecting the extension leaves adjustably to the slides so as to maintain smooth joints between the top and leaves respectively, the adjusting means being in the form of a metal fixture that is easily applied and will insure an accurate and firm adjustment of theleaves when the parts of the table are assembled and whenever it is desired to correct any inequality in the joints in using the table or which may be caused by warping.

With these principal objects in view my invention consists more especially in a metal fixture comprising an adjusting screw' attached to one of the parts to be adjusted, as the leaf, and in threaded engagement with a member attached to the other part of the table, or slide, whereby turning of the screw in either direction will raise or lower the inner end of the leaf to bring it on a line with the table top; all as hereinafter fully described and claimed. a

In the drawings showing the application of my invention to an extension table of the type hereinabove referred to:

Figure l is a sectional view through one end of a refectory table provided with adjusting means for the leaf in accordance with my invention.

Fig. 2 is a similar view of the other end ofthe table.

Figs. 3 and 4 are enlarged sectional views showing the adjusting means, and

Fig. 5 is a detail view of the metal fixture. Although my improved adjusting means are usable in connection with various types of extension tables in which the area of the rigid top is increased by leaves brought on a line with said top either by slides or other leaf-supporting devices I have herein shown the same in connection with a refectory table of the construction illustrated in my prior application for patent referred to, comprising a box-like supporting frame having side and end rails 10 11 at the upper ends of legs 12 with a center rail 13 on which rests the crosspiece 14a extending between the side rails to receive the top 14, it being observed by reference to Figs. 1 and 2 that the side rails are cut away beyond opposite ends of the crosspiece and the upper ends of the posts and end rails similarly spaced from the top to receive the extension leaves 15 in housed so position below the opposite ends of the top, and that the extension leaves are carried at the outer ends of runners or slides 16 working in slots 17 and 18 in the end rail and center rail respectively, said runners being of such length as to maintain engagement with the center rail in the extended position of the leaf which it supports. The width of the slots approximate the thickness of the leaf supporting runners or slides and as the latter slide in said slots in the movement of the leaf to extended and housed positions the depth of the slots correspond with the angle of inclination of the runners or slides, the underside of each runner having a depres sion 19 providing for a slight lowering of the outer end of the runner or slide for the engagement of a pin 20 thereon with the in wardly projecting hook 21 of a metal bracket 22 attached to the inner side of the end rail 11 at one side of the slot 17. When the leaf is moved from housed to extended posi tion on a line with the top the runners slide on thebottom ofslot 17 and the depression 19 at the underside thereof permits the pin 20 to travel around the bill of the hook to rest therein with the upper edge of the runner in engagement with the outer edge of the table top to thereby support the leaf in extended position.

' I-Ieretofore the leaf 15 was rigidly secured to the. outer end of the runner or slide 16 necessitating an accurate attachment of the bracket 22 on the end rail 11 so that engagement of the runner or slide with the outer edge of the crosspiece supporting the table top would, position the leaf on a line with said top, andof course any wear on the parts supporting the leaf would affect the joint between the top and extension leaf or the coplanar relation of their. upper surfaces to each other. In order to facilitate the asse1nbling of the working parts of the extension table by providing for an adjustment of the leaf after the attachment of the bracket to the end rail, as well as at any other time that may be required in the use of the table, my invention contemplates a fixture for conveniently adjusting the leaf on the runner or slide. 7

In carrying out my invention the attachment of the table leaf 15 to the outer end of the runner or slide 16 isby means of an ordinary wood screw 28 passed upwardly through the runner and threaded into the leaf, as shown in Fig. 3, the hole 2 through which the screw passes being slightly larger than said screw for pivotal movement of the leaf on the outer end of the runner or slide to accommodate adjustment by the fixture hereinafter described, and the outer end ofthe hole enlarged or countersunk, as at 25, for the use ofa short screw andto receive a screw-driver. Th s screw enters the tableleaf near the outer end thereof or a short distance from the engagement of the leaf with the outer end of the runner or slide through whichthe screw passes, and for ad- 15, by means of a plate 27 and threaded a (see Fig. 4:) by reducing the upper portion of the screw where it passes through said plate and upsetting the end thereon, the

- threaded portion of the screw which engages the plate 28 terminating a slight distance from the slotted head 26a, and both plates are provided with holes to receive ordinary i wood screws, 29. As the adjusting screw is threaded in the plate 28 the latter will be retained on said screw by the unthreaded portion of the screw towards the head in connec- 3: tion with the plate 27 swivelled on the other end thereof, thus providing for intimately connecting the parts of the fixture together, and in attaching the same to the parts of the table after forming the hole 30 through the runner or slide the screw is passed into said hole and plate 28 secured to the slide by the wood screws 29, after which the plate 27 swivelled on the upper end of the screw is turned at right angles to the slide so that the ends thereof will project beyond the opposite sides of said slide to permit the manipulation of the wood screws 29 in attaching said plate 27 to the underside of the leaf, both plates being let into recesses therefor in the leaf and slide respectively.

The operation of the adjusting device or fixture will be obvious from the foregoing 'descriptiom'for the outer portion of the extension leaf being in contact with the outer end of the runner or slide and held in pivotal engagement by means of the wood screw 23 manipulation of the adjusting screw 26 will raise or lower th'e'inner portion of the leaf above the slide to locate the inner edge thereof on a line with the table top, and of course the fixture can be applied to the extension leaf and slide and approximately adjusted before connecting said extension leaf and its runner or slide to the supporting frame of the table.

I claim 1. In an extension table the combination of a runner slidable in the supporting frame and carrying an extension leaf at the outer end thereof,-a pin projecting from'one side of the runner, and a metal fixture in the form of a hook with which the pin on the runner engages for supporting the leaf on a line with the top of the table; together with means for adjusting the leaf on the slide comprising an adjusting screw rotatably connected to the leaf and in threaded engagement with the v slide. I

'2. In an extension table the combination of a runner slidable in the supporting frame and carrying an extension leaf at the outer end thereof, a pin projecting from one side of the runner, and a metal fixture in the form of a hook with which the pin on the runner engages for supporting the leaf on a line with the top of the table; together with means for adjusting the leaf on the slide comprising an adjusting screw, a member attached to the leaf and to which the adjusting screw is rotatably connected, and a member attached to the slide and with which the screw is in threaded engagement for adjustment of the screw in the slide.

MARTIN FOX.

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