US1494623A - Extension table - Google Patents

Description

May 20 1924. 1,494,623

J. F. PARSONS "EXTENS ION TABLE Filed Sept. 6v 1921 a sneet's-sneet l I a v :1

May 20 1924.

J F. PARSONS EXTENSION TABLE Filed Sept. 6 1921 3 Sheets-Sheet 2 W////// A \J- May 20, 1924 J. F. PARSONS EXTENS ION TABLE Fi led Sept. 6 1921 3 Sheets-Sheep 5 Patented May 20, 1924.

UNITED STATES PATENT OFFICE.

JOHN F. PARSONS, orimsnnwoon, CALIFORNIA, ASSIGNOR or ONE-HALF T ETHEL D. rnnno'r'r, or IneLnwoon; CALIFORNIA, AND GNE-HALF T0 IDA LOUISE 1mm SONS, DE LOS ANGELES,. CALIFORNIA.

.nx'rnnsron TABLE,

Application filed September 6, 1921. Serial No. 498,751

To all whom it may concernf Be it known that I, JOHN F. PARsoNs; a: citizen of the United States, and resident of Inglewood, in the county of Los Angeles ble to position of use between the main leaves when such main leaves are separated.

An object of the invention is to provide a table of the above described type in which the extension leaves are first vertically elevated and subsequently transversely adjusted to their position of use. I

Another object is to provide a table having a two-part hingedly united extension leaf slidably supported on a transverse crank member.

Another object is toprovide means for 7 locking the parts in their difi'erent positions of adjustment to at all times provide a rigid structure.

A further object is'to provide in a table of the character referred to a structure capable" of quick and convenient disassembling for packing for shipment or for other purposes.

Various other objects and advantages will be more fully apparent from the following description of the accompanying drawings which form a part of this disclosure, and which illustrate a preferred embodiment of the invention.

Of the drawings, t Figure 1 is a plan view of the table with the extension leaves in position of use;

Figure 2 is an enlarged section on lin a w of Figure l;

Figure 3 is a similar section showing the extension leaf folded and slidtransversely; Figure 4 is a similar section showing the folded extension leaf lowered beneath the main table leaves; 1

Figure 5 is a side elevation partly broken to more clearly illustrate some of the details of construction;

Figure 6 is a section on line ov -w of Figure 1;

Figure 7 is a detail section on line w w7 of Figure 5;

Figure 8 is a detail section on line as -w of Figure 5;

Figure 9 is a section similar to Figure 6 showing the extension leaves lowered and the main leaf sections of the table closed together;

Figure 10 is a bottom plan view on line x w of Figure 9; and

F igurell is abottom plan view of of the main leaf table sections.

The table of the present invention comprises opposed main leaf sections lmovable away from and towards each other, each section having a pair of paralleltransversely spaced verticalside members 2 with their inner ends connected by a cross member 3 to strengthen the side members against flexion (see particularly Figure 11). Legs t are secured to the outer ends of said side members and a third leg member 5 is secured to the cross member 3, it being understood that this particular arrangement of the legs is only shown as one of the many designs and arrangements in which the operating'mechanism of the present invention may be incorporated. The outer surface of each side member 2 of each table section is provided with a dovetail longitudinal rib 6 having a medial groove 7. Independent side rails 8 cooperate with the alined side members 2 of both table sections, each side rail having a dovetail groove in its inner surface slidably engaging the ribs 6 of said side members 2. Near the ends of the side rails 8 I provide clamp members 9 which are screw-threaded in the railsand engage into the grooves 7 of the respective members 2 and upon tightening said clamp members 9 the grooved rails 8 will bind upon their supporting dovetail ribs 6 and clamp the rails and opposed table sections in adjusted position. i I

An extension leaf supporting base 10 has opposite sidewalls 11 and eachof said side walls is provided with a dovetail rib 12 slidable within companion dovetailgrooves 13 in the inner surfaces of the alined side members 2 of the opposed table sections 1. Limit screws 14 are screw-threaded in the side members 2 and their inner ends project into grooves ,15 out in the outer surface of the dovetail rib 12, said grooves'15 having closed ends (see Figure 8). By this arrangement the screws, 14 function. to limit the separating movement of thetwo table sections.

Each of the extension leaves comprises two sections 16, 17 hinged together by a blind hinge 18 and supported upon a crank member 19 which has its ends journaled in the opposite side walls 11 of the leaf supporting base 10. The leaf section 16 is provided with two relatively spaced bearing elements 20, 21 through which the offset crank portion of the member 19 loosely extends so that the extension leaf is pivotally and slidably connected to the crank member.

The cooperating edges of the different leaf sections of the table have the ordinary intermeshing dowel pins and orifices such as is usual in all extension tables.

With the table in closed position as shown in Figures 4, 9, 10, the extension leaves will be in folded position beneath the main leaves 1 of the table and if desired the clamp members may be tightened so as tolock the table sections against separation. In this closed position the extension leaves rest upon the base member 10 beneath the main leaves 1 as is clearly shown in Figures 4 and 9.

In the operation of extending the tablethe main leaf sections 1 are separated to expose the folded sectional extension leaves and in the first movement of positioning each extension leaf, it is vertically elevated to the position shown in Figure 3, this vertical movement causing the crank portion of the crank member 19 to assume a position vertically alined with its axis of oscillation (see Figure 6). The extension leaf is then slid transversely over the side rail 8 until the bearing element 21 engages the crank arm portion of the crank member 19 as shown in Figure 2, this abutting engagement providing a means for limiting the transverse sliding movement of the extension leaf so it will. be in correct position of longitudinal alinement with the other leaf members of the table. The'leaf section 17 is next swung to open position resting upon the opposite side rail 8 as shown in Figure 2. This struoture provides an extension leaf which in its open position is supported upon the two side rails 8 with its entire medial portion supported by the crank portion of the crank member 19. I

With the extension leaves so positioned the opposed main leaf sections 1 and the extension leaves are brought together, each leaf section abutting the adjacent sections with the intermeshing dowel pins and sockets engaging to aline the leaves. \Vith the table so extended the clamp members 9 are tightsued to maintain the parts against accidenleaves and from the independent side rails 8."

While the form of mechanism here shown and described is welladapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form. of embodiment herein disclosed, for it issusceptible of embodiment in various forms, all comingwithin the broad scope of the following claims.

I claim:

1. In an extension table, main top sections adjustable with relation to each other, an under frame supported beneath the said top sections, a supporting member having crank ends pivotally mounted at fixed points within the said under frame and adapted for movement about its axis to assume a low.- ered position and an upright elevated supporting position, the said member extending parallel tothe opposing edges of the main top sections, an extension leaf comprising sections hingedly connectedend to end, and means hingedly and slidably connecting one of said sections to the intermediate portion of the supporting member.

2. An extension table comprising main top sections. adjustable toward and from each other, side members secured in spaced parallel relation to the under side of each top section, the said side members of the twosections being in alinement, side rails having sliding connectionwith corresponding ones of the side members whereby to connect the members for relative movement in the direction of their length and thereby provide for adjustment of the said, top sections with relation to each other, means for locking the side rails and the side members against movement with relation to each other, an under frame including con: nected side rails slidably engaged with the said side members, means for locking the said last "mentioned rails with relation to the said side members, a support comprising a rod having crank ends pivotally mounted at fixed points upon the last mentioned side rails of the under frame and movable about its axis to lowered position within the said under frame and to upright elevatedsupporting position, an extension leaf comprising sections hingedly connected end to end, and means hingedly and slidably connecting one of said sections with the rod of the said support.

3. An extension table comprising main top sections, an under frame supporting the sections for adjustment toward and from each other and including spaced parallel side members, a tray comprising spaced rails slidably mounted upon the said side members of the under frame, and a bottom extending between and supported by the rails, a supporting member comprising a rod having cranked ends pivotally supported upon the side rails, the supporting member being adapted for swinging adjustment to assume a substantially upright position above the bottom of the tray and to assume a position Within the tray and substantially resting upon the bottom, an extension leafcomprising sections hingedly connected to gether at their ends, and means slidably and pivotally connecting one of the leaf sections to the intermediate portion of the rod comprising the supporting member.

.Signed at Los Angeles, California this 31st day of August, 1921.

JOHN F. PARSONS. Witnesses:

SULLY Russo, L. BELLE WEAVER.

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