US1388708A - Extension-table - Google Patents

Description

J. HERMANS.

EXTENSION IABLE. APPLICATION FILED APR. 1. 1920.

1 3 70 Patented Aug. 23, 1921.

3 SHEETS-SHEET 1.

WITNESSES INVENTOR J67? Hcrma 77$,

A TTORNEYS J. HERMANS.

EXTENSION TABLE.

APPLICATION FILED APR. 1, I920. I

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EXTENSION TABLE.

APPLICATION FILED APR.1, 1920.

1,388,708; PatentedAugf23,1921.'

3 SHEETS-SHEET 3.

WITNESSES Z6 INVENTOR 057m Hcr'ma us,

A TTORNEYS UNITED STATES PATENT OFFICE.

JOHN HERMANS, OF VANCOUVER, WASHING'ICN.

EXTENSION-TABLE.

spammed. of Letters Patent. Patented Aug. 23, 1921.

Application filed April 1, 1920. 312119.] No. 370,407.

table having a permanent series of lapping leaves capable of extension and contraction in such a way as to avoid the necessity of inserting leaves within and removing the same from their proper places in tables as at resent used.

11 carrying out these objects, as well as certain others, to be more fully described hereinafter, I provide a novel construction, and arrangement of parts which will be apparent from the following description in connection with the accompanying drawings, the latter forming a part of this specification, and including several figures, of which I Figure 1 is a perspective view of my improved table complete and in contracted position.

Fig. 2 is a sectional bottom plan view of the same.

Fig. 3 is a vertical longitudinal section thro gh the upper portion of the table in contracted position.

Fig. 1 is a partial vertical longitudinal section with the table top partially extended.

Fig. 5 is a view similar to Fig. 4 showing the parts fully extended.

I *ig. 6 is a detailed perspective view, of one of the inner adjustable leaf levers.

Fig. 7 is a vertical cross section taken substantially on line 7-7 of Fig. 5.

Fig.8 is a similar view taken on line 88 of Fig. 4.

. Fig. 9 is a detailed perspective view of one of the outer adjustable leaf levers.

Fig. 10 is a bottom plan view of the outer corner of one of the permanent top leaves.

Fig. 11 is a detailed section taken on line 111] of Fig. 9.

Fi 12 is a detailed section taken substantially on line 12-12 of Fig. 4, and,

Fig. 13 is a detailed transverse section through the center cross rail taken in the plane of one of its arm receiving slots, as hereinafter described.

Referring now to these figures, my improved table ispreferably of generally rectangular form supported upon legs 15 at its four corners, which legs are secured at their upper ends to the ends of the bars of the top frame which include longitudinal bars 16 and transverse bars 17. The upper edges of the bars 16 and 17 of the top frame terminate flush with the upper ends of the legs 15, and the longitudinal bars 16 are connected at their centers by a rigid flat cross piece 18 overlying a central cross rail 19, the latter of which is of course spaced substantially the same distance from the two end bars 17 of the top frame.

Disposed upon the central cross piece 18 are the inner ends of permanent top leaves 20, of similar size and shape, and whose said inner ends have vertically disposed dowels 21 loosely entering conformable apertures in the cross piece 18 so that the outer ends of the permanent top leaves 20 may yield slightly in a vertical direction for purposes to be presently described. The outer ends of the permanent top leaves 20 extend to points beyond the end cross bars 17 and in the normal contracted position of the table these top leaves 20 form the entire top of the table and overlie pairs of inner and outer adjustable leaves, of which the inner leaves are indicated at 22, and the outer leaves at 23. These pairs of inner and outer adjustable leaves are disposed, in the contracted position of the table, .in the same horizontal plane with the cross piece 18 and upon relatively opposite sides thereof, each pair being similar in size and shape to the ot er and each pair being so proporti o ned that when they are in the inner abutting positions shown in Figs. 1, 2, and 3,

their combined sizes will bring the outer edges of the outer leaves 23 flush with the outer edges of the top leaves 20.

The inner and outer leaves 22 and 23 of each pair are provided with inwardly projecting longitudinal supporting arms 24 and 24 lying along one another inwardly beyond the opposite side bars 16 of the top frame, and relatively shiftable in a vertical direction, the inner ends. of the arms 25 of the outer leaf 23 having angular brackets 26 secured to their inner extremities, the

free ends of which engage the inner ends of the arms 24 of the inner leaf so that when the outer leaf is pulled outwardlyathe inner leaf is caused to move therewith in a. longitudinal direction, although it is still free for independent movement in a vertical direction.

Each of the outer leaves 23 is provided transversely therebeneath, and at the outer ends of its arms 25, with a cross bar 27, having a knob-like handle 28 intermediate its ends, this cross bar 27 enga ing the adjacent end bar 17 of the top fi'ame in the fully contracted position of the parts as seen in ig. 3, and providing means by which the inner and outer leaves ma be readilv grasped and shifted, particular y in an outward direction.

The arms 24 and 25 of the adjacent leaves extend through vertical slots 29 in the end bars 17 of the top frame, and also through vertical slots 30 inthe central cross rail 19, and their structure is such that they cooperate with the bases of the slots 29 of the end bars 17 in particular, and act in the nature of levers to cam the leaves successively in a vertical direction as they are pulled outwardly.

Thus the arms 25 of each outer adjustable leaf 23 have lower inclined surfaces 31 adjacent to their outer ends, the outer portions of which surfaces extend within the respective end bar slot 29 with the parts in the position shown in Fig. 3, so that when the handle 28 thereof is grasped and the parts moved outwardly, the outer leaf 23 will be gradually shifted upwardly, the respective upper permanent leaf 20 yielding vertically for this purpose until the inner edge of the outer leaf 23 arrives at a point opposite the outer edge of the permanent leaf 20,the latter dropping to the position shown in Fig. 4, with its outer edge resting upon the upper surface of the inner adjustable leaf 22 and the permanent leaf is thus supported by the inner leaf 22 in the partially extended posit-ion of. Fig. 4. The arms. 25 of the outer leaf have recessed upper portions intermedi-.

ate their ends providing horizontal edges 32, which are pressed upwardly into contact with the lower surface of the inner leaf when the outer leaf is cammed upwardly into the plane of the top leaf 20.

The arms 24 of each inner leaf 22 also have lower outer inclined edges 33 so that when pull is continued in an outward di- -;i .7 rection upon the outer leaf 23 from the position shown in Fig. 4, the edges 30 coiiperate with the bases of the respective end bar slots 29, and the inner leaf 22 is in turn cammed vertically for which purpose the outer portion of the upper permanent leaf 20 again yi lds vertically until its outer edge drops downwardly at the inner edge of the inner adjustable leaf 22 in the position shown in further outward movement of the two ad-.

j ustable leaves is prevented b virtue of lower outwardly resented shoul ers 34 of the arms 25 of t 1e outer leaf which come into engagement with the inner surface of the respective end bar 17, and it is also to be plainly seen from this figure, and from F1 4 and 6, that the inner leaf arms 24 have mwardly presented vertically shouldered portions 34" intermediate their ends which engage the central transverse rail 19 when the parts are in the inner or contracted position shown in Fig. 3.

. It is thus obvious that the u per permanent leaves form the entire table top in the inner contracted position, and parts thereof in the partially or fully expanded position, and it is equally obvious that for the purpose ofexpanding the table it is simply necessary to gras the handles 28 and pull outwardly upon t e outer adjustable leaves until the desired position, either partially or fully extended, is reached. During this movement the outer and inner adjustable leaves are successively cammed vertically into the plane of the upper permanent leaves 20, and the outer portions of these permanent leaves yield vertically and in an automatic manner as the outer and inner adjustable leaves successively rise to the lane thereof.

ith the parts in fully extended position, and with the object in view of reducing the length of the table it is necessary to first lift the outer edges of the upper permanent leaves 20 in order to push the adjustable leaves inwardly.

As seen in Fig. 10, the lower surfaces of the upper permanent leaves 20 may be provided with buffer strips 35 extending along the same to rest u on the upper surfaces of the adjustable eaves, and in this way avoid danger of scratching or marring the polished surfaces.

By the use of my improvements the necessity as encountered in connection with extension tables of the type commonly employed, of insertin and removing supplemental leaves, which, when detached, are stored apart from the table, is avoided.

I claim:

1. An extension table comprising a ri id top frame including slotted cross rails an a central transversely disposed cross piece, adjustable inner and outer leaves normally supported upon the frame in the plane of the cross piece, permanent leaves supported by the cross piece and normally overlying the ad'ustable leaves, the outer adjustable leaves aving cross bars supporting handles,

cross rails, said arms of the outer adjustable leaves having angular pieces at their inner ends engageable with the inner ends of the arms of the inner leaves to cause simultaneous outward movement of the inner and outer leaves during a portion of the outward movement of the outer adjustable leaves, as and for the purpose described.

2. An extension table having a rigid top frame including central and end cross rails provided with slots, a cross piece supported on the center rail, inner and outer adjustable leaves at opposite sides, and in the plane of the cross piece, upper permanent leaves, the inner portions of which are supported by and connected to the cross piece, said upper leaves normally overlying and concealing the adjustable leaves, the said adjustable leaves having pairs of adjacent inwardly projecting arms adapted to extend through and cooperate with the slots of the cross rails, and each of which arms has a lower in clined edge adjacent to its outer end, and a vertically disposed shoulder intermediate its ends, the arms of the outer leaves having brackets at their inner ends extending across and engaging the inner ends of the arms of the inner leaves in vertically movable relation, and cross bars below the outer portion of the outer leaves normally engaging the end cross ralls of the frame and provided with handles intermediate their ends,

for the purpose described.

3. An extension table having a rigid frame including slotted cross rails and a cross piece, permanent leaves movably connected at their inner adjacent edges to the cross piece, inner and outer adjustable leaves beneath each of said permanent leaves, the said adjustable leaves having pairs of adjacent inwardly projecting arms extending through and guided within the slots of the cross rails and each provided with a lower inclined edge adjacent to its outer end and a vertically disposed shoulder intermediate its ends, the arms of the outer leaves being partially movable independent of the inner leaves and having angular brackets at their inner ends engageable with the inner ends of the arms of the inner leaves whereby to shift the latter with the outer leaves during a part of the movement of the latter and at the same time permit the inner leaves to shift vertically and independently of the outer leaves.

JOHN HERMANS.

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