US1996542A - Metal slide for extension tables - Google Patents

Description

April 2, 1935. M. FOX

METAL SLIDE EoEExTENsIoN TABLES Filed Feb. l2, 1954 3 Sheets-Sheet 1 l uw mkg NM.

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April 2, 1935. M FOX METAL SLIDE FOR EXTENSION TABLES 3 Sheets-Sheet 2 Filed Feb. l2, 1934 pil 2, 1935. M, Fox

METAL SLIDE FOR EXTENSION TABLES Filed Feb. l2, 1954- 5 Sheets-Sheet ,3

Patented Apr. 2, 1935 UNITED STATES METAL SLIDE FOR EXTENSION TABLES Martin Fox, Chicago, Ill., assigner to The Seng Company, Chicago, lll.

Application February 12, 1934, serial No. 710,952

1o Claims.

My invention is an improvement in extension tables and has particular reference to the longitudinally movable rails Vor slides which carry the sections of the top so that the latter may be separated for the reception of the extra leaves or llers which rest on the slide rails in the extended position of the table.

In the construction of extension tables of this general type the sections of the top are in some 0 instances attached to independently movable table frames connected by cooperating table top slides which permit separation of the two parts of the table for the purpose of receiving the extra leaves or llers, while in other instances the sections of the top are slidable on a table frame `common to both top sections with the table top slides cooperating with an interposed rail xed to and forming a part `of the supporting frame. These slides are usually arranged in pairs near the opposite sides of the table and the companion slides of each pair are attached respectively to the opposite table top sections from which they project for slidable, engagement with each other or with an interposed fixed rail.

The main purpose of my invention is to provide table top slides of economic construction and possessing the advantageous features of stability in use and smoothness of operation, and wherein the peculiar construction of the slides and cooperating elements or free moving rollers are adaptable in various combinations, as simple slides or in connection with equalizing mechanism.

My invention therefore contemplates the production of table top slides in the form of a pair of rails or angle bars disposed with the horizontal members uppermost for attachment to the table top sections and the depending members provided with spaced apart longitudinal slots, in cooperation with free moving or loose rollers con- 40 necting the slides together or to an interposed rail, in the latter instance with or Without equalizing mechanism for the movement of both sections on the operation of either one.

In the drawings:-

Figure 1 is a plan view of a conventional type of extension table showing the general application of my improved table top slides.

Fig. 2 is a vertical transverse section taken on the line 2-2 of Fig. 1.

Fig. 3 is a detail plan view of the slides in extended position in full lines and closed position in dotted lines.

Fig. 4 is a side elevation showing the slides in extended position.

Fig. 5 is a similar view showing the slides contracted. l

Fig. 6 is a detail perspective view of the loose roller for connecting the pair of slides.

Fig. 7 is a sectional View on the line 1--1 of Fig. 4.

Fig. 11 is a' sectional view on the line Il-I I of Fig. 10.

Fig. 12 is a plan view of a further modificationv to include equalizing mechanism for operating the slides in unison, the slides being in extended position. y

Fig. 13 is a similar view with the slides contracted and the sections of the table top indicated by dotted lines.

Fig. 14 is a side elevation of Fig. 13.

Fig. 15 is an enlarged detail side elevation of a fragment of one of the metal slides.

Fig. 16 is a sectional view through the center of the slides and supporting rail, showing the equalizing device.

Fig. 17 is a side view of the central portion'oi' the center rail, and

Fig. 18 is an enlarged detail sectional view showing a modied form of roller for connecting the slide rails.

In the construction of divided top extension tables it is customary to have the slides which are attached to the sections of the top arranged in pairs near opposite sides of the table, and in that type of extension table shown in Fig. 1 the top sections 20, 20--connected by my' improved slides hereinafter particularly described-are suitably supported o`n independent frames 2|', 2| having the usual supporting legs 2'2, so that the two parts of the table may be separated to receive the extra leaf which rests on the slides in between the top sections and coplanar therewith. In this example of extension `table there is also shown a foldable filler or table leaf 23 swiveled by brackets 24 to a crossbar 25 extending under the top sections and slidably connected thereto by metal brackets 26, 26, the two sections of the foldable filler being hinged together by hinges 21, 21, and as this is one of the conventional forms of extension tables it will be understood that when the folded filler is swung to a position b elow the plane of the top sections and the latter brought together said folded ller will be housed below the closed top of the table. Conversely when the parts of the table are separated for the positioning of the ller between the top sections said folded filler is rst 'swung bodily upon the swivel connection to rest on one of the pairs of slides and then unfolded to extend the full length of the space between the top sections, after which the two parts of the table are moved towards 'each other for clamping the filler between said top sections. In this extended position of the filler it rests upon the opposite slides with an intermediate bearing on the crossbar, and for the purpose 0f locking the several parts of the table together there is a catch 28 at the inner edge of one of the top sections which engages a lip of an angle plate 29 at the under side of the iiller,'sald catch also serving tok lock the table in closed position by engaging a similar angle plate 30 on the under side of the other top section. The catch is released in the usual manner by a pull wire 3l extending from the catch to the outer edge of that top section to which said catch is attached. In respect to this application of my improved s1ides,fully described further on in this specification, I employ a combined supporting and guiding plate 32 for the foldable filler, said plate depending from the pair of slides furthest from the crossbar so that the free end of the folded filler may rest thereon in housed position, it being noted that when the parts of the table are brought together the outer end of the supporting plate will slide beneath the outer edge of the folded ller with the movement of its table top slide, as indicated by Fig. 3 of the drawings. This supporting plate forms a part of my invention in connection with the special construction of table top slides, or one pair of slides,

and serves not only to support the foldable filler but acts also to guide the free end thereof in swinging the same to and from housed position.

The metal table top slides in accordance with my invention are in respect to each pair made up of two L-rails or angle bars 33, 33 of like construction, that is to say the upper horizontal member of each slide is provided in the end portion thereof at one side of the center with a series of screw holes 34 for attachment to the table top section, and the vertical member or leg provided with longitudinal slots 35, 36 by which the pair of slides or rails are connected for slidable movement one upon the other, each slide being preferably provided with two slots spaced apart, as shown. In assembling these rails or slides they are disposed side by side with the horizontal members uppermost and projecting outwardly, and they'are connected for slidable movement in association with each other by a particular form of roller, referred t0 generally by the numeral 31, and consisting of opposite roller sections 38, 38 with an interposed disk 39, the parts of the roller being connected together by a pin or rivet 40, said roller sections each having a iiange 38a at its outer end bearing against .the face of the adjacent metal slide while the disk is interposed between the two slides,as clearly shown in Fig. 18 of the drawings. When the parts of the roller are fastened together by the pin they loosely connect the slides to not only permit sliding movement thereof but also allow the rollers to have free movement or run loosely in the slots during the movement of the slides upon each other, for which purpose that portion of the roller lsection which extends through the slot is vslightly wider than the thickness of the slide or rail. It will be understood, however, thatvthe construction of these rollers may be modified, as for instance in Fig. 11,

-wherein washers 4| are used at the outer ends of the pin against the roller sections 38, it being important that the rollers fit loosely for a oating engagement with the companion slots in the slide or rails. In connection with one set of the metal xtures or metal slides the foldable filler supporting plate 32, hereinbefore referred to, is attached to one of the slides or L-rails at the under side of the outwardly projecting upper member, said plate presenting a downwardly inclined body portion with an angular projection 32a, at its upper end for attachment of the plate to the slide by rivet 42 and a forward projection 32h at its lower end upon which the outer or free end of the filler rests in the housed position thereof.

The slides are attached to the two divided.

sections of the top as illustrated in Fig. l of the drawings, two pairs' of slides being preferably used for the extra leaf or leaves to rest thereon, and as these slides are for the purpose of having the table top sections move in unison to and from each other as well as support the extragleaves they may be applied to any form of extension table in addition to that type shown in Fig. 1, the operation of the slides being the same in every instance. The particular construction of my improved metal fixtures or slides, including the employment of the rollers floating in the companion slots 35 and 36 lof the pair of slides, provide that asthe sections of the top are moved to either extended or closed positions said rollers will run freely in the slots to support said sections in these operations and the extended position of the top sections will be limited by said rollers engaging the ends of said slots which latter then extend in opposite directions from the respective rollers. The slots are of such length that when the table top sections are in closed position as shown in Fig.5 the free running rollers are in engagement with the other end of the companion slots 35, 36, and similarly extend in opposite directions from said rollers. In other words, the rollers are free to run in the slots in any intermediate position as the slides are moved in the opposite directions for extending and closing the divided top of the table, and the provision of two slots for each roller, or spaced apart floating rollers, will permit of greater extension than would be possible if the rollers were xed.

As shown in Figs. 9 and 10 the metal xtures or slides may be used in connection with any type of extension table having the supporting frame common to both slidable top sections, and having a fixed rail 43. In this instance the slides 33,133, instead of being connected together side by side, are at opposite sides of the xed rail, and the pin 40a of the roller extends through said fixedl rail.

I alsopropose to use the special form of table top slides, and means f connection, with that type of table employing an equalizer shown in Figs. 14 to i1 of the drawings, wherein slides 44, 44, and 46 are provided with companion slots 41, 50 `and 48, 49, and in which the free'running rollers 31 are in floating .engagementyvith said slots so as to operate in the movement ofthe slides in the same manner as above described. For this type of table the slides or L-rails 44, 44 are slightly modified by having holes 53 punched through the same at the upper edge of the vertical member or leg of each slide sothat the pinion 5| will mesh therewith. In this instance I prefer to have the stationary or xed rail 46 in the form of a channel bar with the-connecting portion uppermost and the angle rails or slides 44, 44 connected to the opposite depending members or legs of the channel bar by means of the rollers 31, and in order that the pinion 5I located at the center of said rail may engage the rack feature of the` slides said pinion extends through slots 54 in the opposite sides of the channel bar. 'I'he 'pinion is therefore located within the channel bar immediately below the connecting portion thereof, and so that the head of the pin 52 which connects the pinion to said Cil 1,996,542 connecting portion will not project above-the surface of the channel bar or xed rail a depression is formed in the latter as shown in Fig. 16. For supporting this structure in the frame of the table brackets 55, 55 are riveted within the channel bar or rail, and for attaching the slides to the table top sections they are provided with screw holes 45. It will be obvious that this construction of metal xture for that type of extension table having an equalizer retains the advantageous featuresof my improved form of slides, and although I prefer to have the rack with which the pinion engages formed as an integral part of the slides it is very obvious that said rack may be a separate part attached to the slide and thatV the intermeshing pinion may be located at any other point within the channel bar. It is also obvious that when a Wooden center rail is employed (shown in Figs. 9, 10, and 11) the intermeshing pinion of the equalizer device could be mounted in a recess therefor at the center of the wooden rail to engage the racks formed in the opposite metal slides (44, 48, Fig. 16). This change in construction is so apparent that illustration thereof is considered unnecessary.

Although I have illustratedthe preferred embodiment of my invention relating to improved slides or metal xtures for extension tables to include certain modications, it will be apparent that other modifications or changes may be resorted to within the spirit and scope of the appended claims.

The slides and slots by` which they are slidably connected through the intervention of the loose rollers may be of different lengths in accordance with the size of extension table and number of leaves or llers to be brought between the divided top sections, as for instance in Fig. 1 provision is made for a single ller while in Figs. 14 to 17 a greater extension of the top sections is provided for.

1. Slides for divided top sections of extension tables comprising rails, and means for connecting the rails together for sliding movement including a horizontal slot extending entirely through the body of each rail, said slots registering with each other, and a loose tting roller in floating engagement with the companion slots in the rails to provide for a greater extension of said rails.

2. Metal slides for divided top sections of extension tables comprising angle rails, and means for connecting the rails together for sliding movement including horizontal slots in the vertical portion of said rails adapted to register with each other, and a loose tting roller in floating engagement with the companion slots to provide for a greater extensionof therails.

3. Slides for divided top sections of extension tables comprising slides or rails, means for connecting the slides or rails for sliding movement including spaced apart horizontal slots extending through each slide and adapted to register with corresponding slots inthe companion slide, and a loose fitting roller engaging each companion pair of slots to provide for a greater extension of the -slides.

4. Slides for divided top sections of extension tables comprising rails, and means for connecting the rails together for sliding movement including a horizontal slot extending entirely through the body of each rail, said slots registering with each other, spaced apart rollers in floating engagement with the companion slots, a disk interposed between the rollers and rails, and a pin extending axially through the rollers and disk for connecting the parts together.

5. Slides for divided top sections of extension tables comprising rails, and means for connectl ing the rails together for sliding movement including a horizontal slot extending through the body of each rail, said slots registering with each other, spaced apart iianged rollers in floating engagement with the companion slots and outer sides of the rails, a disk interposed between the rollers and the rails, and a pin extending axially through the rollers and disk for connecting the parts together.

6. Metal slides for divided top sections of extension tables comprising angle" rails, the vertical leg of each rail having spaced apart slotstherein, the slots in one rail'registering with corresponding slots in the other rail; together with rollers for connecting the rails for sliding movement, said rollers being in floating engagement with, and extending loosely through, companion slots inthe slides.

7. Metal iixtures for extension tables comprising a rail in the form of a channel bar, each vertical leg of said channel bar having a horizontal slot therein, slides movable at one side of each leg of the channel bar, each slide having a horizontal slot registering with the corresponding slot in the leg of the channel bar, and a loose tting roller in oating engagement with each pair of registering slots for connecting said slides to the channel bar.

8. Metal fixtures -for extension tables comprising a rail in the form of a channel bar, said channel bar having horizontal slots therein, slides movable on the channel bar, each slide having a horizontal slot registering with a corre-i sponding slot in the channel bar, and a loose tting roller in floating engagement with each pair of registering slots; together with an equalizer device comprising cooperating racks and pinion on the channel bar and slides.

9. Metal xtures for extension tables comprising a rail in the form of a channel bar, each vertical leg of said channel bar having two spaced apart horizontal slots therein, slides movable at opposite sides of the channel bar and each having two spaced apart horizontal slots registering with the corresponding slots in the legs of the channel bar, and a loose tting rol/ler in floating engagement with each pair of registering 'slots for. connecting said slides to the channel bar.

10. Metal xtures for extension tables comprising a rail in the form of a channel bar, each vertical leg of said channel bar having two spaced apart horizontal slotstherein, slides movable at opposite sides of the channel bar and each having two spaced apart horizontal slots registering with the corresponding slots in the legs of the channel bar, and a loose fitting roller in liioating engagement with each pair of registering slots for connecting said slides to the channel bar; together with an equalizer device comprising co-z operating racks and pinion on the channel bar and slides.

MARTIN FOX.

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