US1099787A - Extension-table. - Google Patents

Description

L. J. CHAPMAN.

EXTENSION TABLE.

APPLICATION FILED APR.'10. 1908 1,099,787. Patented June 9, 1914.

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L. J. CHAPMAN.

EXTENSION TABLE.

APPLICATION FILED APR. 10, 1903,

Patented June 9, 1914.

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LIONEL 3. CHAPMAN. 0F HANOVER, PENNSYLVANIA, ASEEIGNQR- TO THE LONG FURNI- TURE 00., OF HANOVER, PENHSYLVANIA, A COHPDRATION OF PENNSYLVANIA.

EXTENSION-TABLE.

Specification of Letters Patent.

Application filed April it 1908.

Patented June 9, 1914. Ecrial l lo. 1%,3753.

To all whom it may concern Be it known that I, LIONEL J. CHAPMAN, a citizen of the United States, residing; at Hanover, in the copnty of York and State of Pennsylvania, have invented a new and useful Extension-Table, of whin the following is a specification. p

This invention relates more particularly to pedestal tables, though there are features probably useful in connection with extension tables of other ty Jes. The primary object of the present inven tion is to provide novel, simple and effective means whereby upon the movement of either top end section,'the other end section will be moved-in an opposite direction so that the table will always be properly extended and contracted and the pedestal or other support will be properly centered with respect thereto, the structure moreover being nary type of table without material altera tions therein.

The preferred embodiment of the invention is illustrated in the accompanying d rawings, wherein b Figure 1 is a bottom plan View oi. the table top with the pedestal shown in sec tion. Fig. 2 is a detail sectional View on the line2--2 of Fig. 1. Fig. 3 is a sectional view on the line 3-3 of Fig. 1. Fig. 4 is a detail cross sectional View on the line of Fig. 1. 7

Similar reference numerals designate corresponding parts in all the figures of the drawings.

In the embodiment disclosed, a center or supporting member is employed comprising a pedestal 5 carrying on its upper end a buck frame composed of crossed lltll'S 6. Spaced parallel slides 7 are fixedto the ends of the crossed bars 6 by screws '3 or other suitable fasteners. The table top comprises separable end sections 8 having sets of slides S) that are respectively and slidahl y engaged nor well understood to those skilled in this art. So far as thus'described, nothing is claimed for the table, the structure being well known and being open to a serious objectiou, that is to say, either end section of the top may be drawn out independently of the other end. Oonseqitiently it often hantoned.

pens that it' the top extended, the pedestal V will be at one side of the center that not I I only is the symmetry of said table destroyed,

but the top is improperly supported. Moreover it is very diliicult for one person to open and close the table, and ordinarily two are required. In order to eliminate this objectionable feature, the following mechanism is preferably employed. It will be ob served particularly by reference to Fig. 4 that the center or intermediate slide 7 of each set-is wider than the outer slides, and secured, to the lower faces of said outer slides, are racks 10, the fasteners therefor being shown at 11. The teeth of these racks are oppositely disposed. Clihe center slides 7 have the central portions of their under sides cut away, as shown at 12, and journaled in said cut away portions are gears 13, which are in mesh with the racks. The j0urnals for said gears are screws or other headed fasteners i l, which also serve tohold the gears in place. With this construction, it will be evident that if one of the end sections 8 or the top is drawn outwardly, the slides tl'iercoil will be moved in :1 corresponding direction, and the racks carried by said slides will therefore cause the rotation of the gears 13. Those gears being in mesh with the end sections, will. effect the movements of said other slides in an opposite direction. 'lherefore the other end section will be moved outwardly a corresponding distance. The result is that the pedestal will always be centered, the symmetry of the table will not be destroyed, and the table top can be extended and contracted by one person. One of the principal features of this invention resides in the arrangement of the raclcbars along the underside of the slides 9 to which they are rigidly secured. As shown in Fig. 3, the rack bars are slightly narrower than the width of the slid cs to which they are fasllflorcover, the gear wheels 13 are wider than the fixed slide rails 7, so that their teeth overlap the adjacent slides 9, the meshing of the teeth of the gear wheels and racks being to one side of the line of separation of the slides and 9.

From the foregoing, it thought that the construction, operation. and many advan tones of the herein described invention will be apparent to those skilled in the art, without :tm'thcr description, and it will be understood that various hanger; in the size, shape,

racks on the slides of the opposite roportion, andvminor details of constriiction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

' Having thus fully described my invention,

what I claim'asnew, and desire to. secure by Letters Patent, is

1.- In an extension table, the combination with the central vertical support, and a pair offixed spaced slide rails located one on either side of the support and carried thereby, of a table top comprising separable end sections, apair of opposed slide rails be- I rail section near the middle thereof, and

fixed racks on the bottom of each end slide neath each end section, said sliding rails being attached thereto and projecting therefrom, the slide-rails of the end sections slidably contacting at their sides with the fixed.

slide rails, gear Wheels rotatable in a horizontal plane and mounted on each fixed slide secured to one end section and slidaloly engaging the opposed innerfaces of the slide rails, a pair of spaced rails secured to the other end section and slidablyengaging the outer faces of the slide rails, a verticallydisposed, rigidly-mounted pivot on each fixed slide rail at approximately the center thereof a pinion mounted on each pivot and having a diameter greater than the Width of the fixed slide rails so as to extend heyond'the opposite edges of the slide rails andoverlap the rails of the table top sections, and rack bars arranged along and secured rigidly to the bottom of the rails of the table top sections and having a diameter less than the Width of the said rails and meshing with the pinion's for causing simul taneous movement of the table sections upon the movement of either table section.

In testimony, that I claim the foregoing as my own, I'have hereto aiiixed' my signature in the presence of two Witnesses.

Witnesses:

H. M. Barron, GUY W. BANGE.

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