US1671655A - Extension table - Google Patents

Description

May 29,/ sz.

H. J. SCHNEIDER Y.

EXTENSION4 TABLE Filed April 15, 1926 Quoting* PatentedMay 29, 192s.

" 'UNITED STATES 1,671,655 PATENT OFFICE.

HENRY J. SCHNEIDER, or LOUISVILLE, KENTUCKY.

EXTENSION" TABLE.

Application led April 15, 1926. Serial No. 102.245.

My invention relates to extension tables and particularly to the construction and arrangement of the slides or runners to which the main sections of the tabletop are secured and which afford means for maintaining said sections interconnected when they are separated to make room for the insertion of leaves.

. The object of the invention isto construct aslide unit which shall be light and rigid, easy to operate, cheap to manufacture, and in which metal slide members take the place of the usual wooden slides, ensuring` free-` with the parts in the position shown in Fig. 2; 1 I

Figure 4 is aperspective view of the sllde unit;

Figure 5 is a cross section through the slide unit showing the roller partson one side in separated relation. y y

Referring now in detail to the several figures, the numeral lerepresentsthe cross piece of a table, parts being broken away, .supported ordinarily by a pedestal, not shown. It is to be understood that more than one of the slide units now to be described may be used for each table, but since they are identical in construction, one only has been illustrated.

lhe slide unit comprises a center bar 2, preferably of rectangular crosssection, rigidly secured to the cross piece 1 in any suitable manner as by wood screws 3. members 4 and 5 are arranged to slide lengthwise of the center bar 2 at the opposite sides thereof, and in opposite directions. Said slide members each comprises a piece of commercial angle iron of channel section having the flat web 6 arranged vertically adjacent the center bar, and upper and lower flanges 7 and 8, the former being preferably broader adjacent one end as shown at 9 to form a broad seating surface for Slide one of the main table top sections 10,\said broadened portion being formed with suitable apertures 11 to receive the wood screws 12 by means of which the table top sections are secured to the slide member. The lower ange 8 is unattached to any part of the table structure, being solely for the purpose of stifl'ening and reinforcing the slide member.

The web 6 is formed with a longitudinal slot 13, the walls of which forma track for theanti-friction rollers 14 upon which the slide members are slidably supported. The

rollers 14 are flanked on both sides by washers 15 and 16, said rollers and washers bemg secured to thejeenter bar by means of wood screws 17. The washers 15 act as spacers to keep the slide members slightly separated from Contact with the center bar, thereby reducing friction between these parts and ensuring thatthe slide members will always slide freely with respect to the center bar. rIhe washers 15 and 16 are of greater diameter than the rollers 14 so that M the slide member is maintained in definite position upon the rollers. The. rollers are arranged in pairs in spaced relation on `the center bar, two being provided for each slot so that the `slide members move parallel to the plane of the tabletop. A light spring `18 surrounding the screw 17 and retained between the roller 14 and washer 16 keeps the parts under mild tension, and avoids undue looseness in the connections.

It will be noted that when the members of' the slide unit are in telescoped relation, one end of each slide member extends beneath thelsection of the table top attached to the other slide member. In order to avoid frictional contact between these underlying ends and the table top, the top fiange of each slide member is depressed in that por tion which extends beneath the opposite table top section as shown at 1.9 in Fig. 2 the web 6 being narrowed mit this construction.

The ends of the slots 13 adjacent the cen- 3 in width to perter of the table act as stops to limit the outward movement of the tabletop when the latter is expanded, preventing the table top sections from coming entirely apart.

The slide members may be stamped in a single piece from sheet metal, at small cost, the flanges 7 and 8 making them as strong and rigid as they would be if formed as heavier castings. Being of metal, they are non-hygroscopic in character so as to be 'unaffected by atmospheric dampness. Slnce they are mounted upon anti-friction rollers,

and kept separate from the center bar by thek washers 15, the slide members operate freely in the opening and closing of the table. lVarping of the center bar will not cause them to bind nor will slight warpingor inf equality in the mounting of the table top i sections.

lVhile-I have in the above description defined what I. believe to be a preferred and practical form of my invent-ion, yet it is to be undcrstoodxthat tliespecific features disclosed are not limitative in their bearing `upon the invention lbut only by way of eirample, except in so far as they are prescribed by the express terms of the appended claims. Having fully describedmy invention and set forth its merits, what I claim is 1. A slide unit for extension tables including a; metallic slide memberI ofy channelI cross-section havingruppcr and lower flanges,

limiting the rectilinear sliding-movement of' said slide members, and Washers of larger diameter than said. rollers, flanking both sides 'of said web for. retaining said slide member.l in operative position out of intimate contact Withfsaid bar.-

2; A slide. unit for` extension tables including a metallic slide member of channel cross-section having upper and lower flanges, 'the upper flange serving at one end as the -supportfor alsection of the table top,and being reduced in Widthand depressed at thev other end below the plane'of the table top supporting end, said flanges-being jointed 'by a slotted web adapted to receive guiding and retaining means.

3. A slide unit for` extension tables including a center Wooden bar, a pair of slide members flanking the sides of said center bar, -reversely arranged, guiding means for slidably retaining said slide members in operative relation to said center` bar, each slide member comprising a metallic member of channel cross-section having upper and` lower flanges, opposite ends of the upper flanges being adapted to support the cooperatingqsectionsof the table top, the other ends ofsaid flanges being reduced in width and depressed from the plane of the first named ends, to extend in out-of-contactV relation beneath the top section.; when the table is closed, said flanges being joined by slotted the'fianges, friction rollers connected to op# posite sides ofthe central bar and positioned in the slotsof the channeled slide members, Washers of greater diameter than the friction rollers disposed at oppositesides of the rollers to hold' the rollers in alinement in the slots ofthe slide members. the Washers between the central bar and slide members serving to space said members from the sides ofthe central bar, to avoid'frictional contact between said.` bar and slide members.

5. A slide for extension tables comprising a centrally disposed liar `extending longitudinally of the table, channeled metallic slide members flanking saidbar and formed Withnpper laterally projecting flanges to which the table is attached and having a slottedvertical web, friction rollers connected to opposite sides of the central bar and positionedin the slots ofthe channeledslide members, washers of greater diameter'- thanl the friction rollers disposed at'opposite sides of the rollers andthe vertical web of the slide members, and means for exerting a spring tension to take-uplooseness betweeni HENRY J. sonruairnnn;`

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