US1767016A - Extension table - Google Patents

Description

June 24 1930. w. P. SAUER 1,767,016

EXTENSION TABLE Fil ed F eb is. 1929 s Sheets-Sheet 1 W. P. SAUER' EXTENSION TABLE June 24, 1930.

Filed Feb. 16, 1929 5 Sheets-Sheet 2 ww m.

June 24, 1930. w. p. SAUER 1,767,016

EXTENSION TABLE Filed Feb. 16, 1929 3 Sheets-Sheet 3 likTl I i.

the said leaves have been extended to a Patented June 24, 1930 UNITED STATES ATENT OFFIQE WALTER P. SAUER, FOREST HILLS, YORK, ASSIGNOR T0 THEODOR COMPANY, OF NEW YORK, N. Y.,

a conroaarron or new YORK EXTENSION TABLE Application filed February 16,1929. Serial No. 340,543.

This invention relates to improvements in extensible tables of the type shown in my previous U. S. Patent #1,622,54-1 dated March 29th, 1927, and has for one of its objects the provision of a table of this character that may be extended and retracted without undue effort.

Another object of the invention is to'provide a table of the character referred to that will be tion. 7

A further object of the invention is to provide such a table in which the weight of the table top will rest upon the stationary slid-c during substantially the entire movement of the slides during the expansion and retraction of the table.

A still further object of the invention is to provide an extensible table in which the parts will so be arranged that the weight of the table top during its downward movement will cause the movable slides carrying the leaves to move inwardly to meet the said table top and form a continuoussurface therewith after predetermined position.

A still further object of the invention is to provide means -for positively limiting the outward movement of the leaves when the table is belng extended.

Another ObJECt is to produce a device of the character described in which the maxi-- tying the present inventive concept suggests a practical embodiment thereof, but the in vention 1s not to be restricted to the exact d tails of this disclosure, and the latter, therepositive in action and silent in operafore, is to be understood from anillustrative,"

rather than a restrictive standpoint. v

The inventive idea involved is capable of receiving a variety of mechanical expressions, one of which, for the purposes of illustration, isshownin the accompanying drawings, in which Figure l is a fragmental top plan view of an extensible table showing one embodiment of my invention.

Figure 2 is a sectional view taken on line 22 Figure 1 showing the table in normal'retracted position.

Figure 3. is a viewsirnilar to Figure 2 showing the leaves extended beyond the side edges of the table top and the table top in a position ready to descend to a level. with the top of the said leaves.

Figure 4 is a view similar to Figure 3 with the table top' in lowered position and the leaves abutting the sides of the'table top. V Figure 5 is a similar. View to Figure 4: with the leaves extended and the table top raised to a position prior to retraction of the table. Figure 6 is a cross sectional view of the slide mechanism taken on line 6+6 Figure 1.

Figure 7 is a similar view to Figure 6 showing only one of the movable slides and the positioning of the shoe in the 'fixed' slide taken on line 7-'-.7 Figure 1.

Figure 8 is a similar view to Figure 7 taken on line 8+8 Figure 1.

Figure .9is a perspective view of the slidable shoe stop.

Figure 10 is a perspective view of the shoe and Figure 11 is an inner face view of one of the movable. slides.

Referring to the drawings in detail 15 in dicates a table supporting frame near one end of which is secured a stationary slide member 16 in operative relationwith-movable slides 17 'and 18. At the bottom of the stationary .slide member 16', there'is' provided a gear G SAUER The movable slides 17 and 18 are each provided at one of their extremities with a cam plate 22 normally resting, when the table is in retracted position on rollers 23 rotatably supported on guide brackets 24 secured to opposite ends of the stationary slide16 and adjacent to the inner surfaces of the movable slides. The said movable slides 17 and 18 are provided with T slots 23, and the said slots conform inshape at their ends 24 to the. cam plates 22. The movable slide 17-has secured thereto a leaf 25 and the movable slide 18 has similarly secured thereto a leaf 26.

A table top 27 overlies the leaves 25 and 26 when the table is in normal retracted position. The said table top is provided with projections 28, which when the table is in the said normal retracted position, rest upon shoes 29 and 30 slidingly mounted in- guide slots 31 and 32 in the fixed slides 16, and the said shoes are located or positioned by means of pins 33 and 34 in the fixed slide 16 and by means of plates 35 and 36 secured to the underside of the movable slides 17 and 18 re spectively.

Upon exerting an outward pull uponone of the leaves, for the sake of explanation, let it be assumed that the leaf 26 is acted upon, then the movable slide 18 will move outwardly, and at the commencement of the said movement the said leaf will drop slightlydue to the cam plate 22 and cause a clearance be tween the bottom of the table top and the said leaf (see Fig. 2). The said clearance will be maintained throughout-the entire movement of the movable slide. When the movable slide nears the end of its outward movement, a block 40 (see Fig. 3) will engage. the shoe 30 and move same against a stop 41 slidably mounted in a vertical slideway 43 and maintained in position" by a leaf. spring 12 exerting a pressure against the said slide 16 (see Fig. 8). lVhen the shoe is in the position just described, the projection or extension 28 on the table top will be in. line with a cutout a l in the shoe, and the roller 38 will be resting upon the top. portion of a cam surface 45- on a cam plate 46 securedto the movable slide 18. The said portion is slight- 1y higher than the surface of the shoe upon which the projection rests.

Due to this cam face and the weight of the tabletop, the said table top will be lowered by gravity and simultaneously move the movable slide to the Figure 4 position wherein the table top is shown as lowered and the leaf 26 is abutting the lateral edge of the table top 27. the table top will have forced the shoe stop ll to its lowermost position as shown in Figure 4 and will stay in the said position until actuated by the plate 36 to assume its uppermost position.

To retract the table, the leaf is again pulled outwardly until the roller 38 rests The downward movement of.

on the top surface of the cam plate 45 with the post 28 clearing the top of the shoe, and the block 40 again contacts the shoe 30 and moves it against a stop l8 in the stationary slide 16 (see Fig. 5). \Vhen in this position, the movable slide and leaf 26 is pushed inwardly andwhen near the end of the said inward movement, the plate 36 secured to the said movable slide will return the said shoe to its normal Figure 1 position. The said plate 36will also return the shoe stop 16 to its normal Figure 1 position by pressing against a cam face 50 on the said stop. A bridge plate 51 will maintain. the table top in its upper position and prevent same from dropping back into the slot 44 in the shoe during the return of the said shoe from the Fig. 5 position to its normal Fig. 2 position.

It will be understood that both movable slides carrying the leaves 25 and 26 operate simultaneously and the action is the same for both of these leaves as similar parts are du pressure upon the movable slides is when the weight of the table top is causing the slides to move inwardly at which time the operator no longer exerts any pull on the leaf.

The only other time when there is any pressure of the table top upon the movable slides is when the table is being extended prior to retraction, and at that time the rollers 38 are riding upon the cam surface 45 of the cam plates 4L6, which travel is for a comparatively short distance.

It will be understood that during the initial movement of the slides for expansion, the roller 38 only passes over the top surface of the bridge plate 51 without exerting any pressure thereon, as the said plate will have beenlowered by the action of the cam plate 22 on the roller 23 with which it is timed.

The movable slides are guided in their inward and outward movement by means of the guide brackets 24 and by washers 55, the former being secured to opposite ends of the opposite sides of the stationary slides, and the latter being securedto the blocks 40 on the movable slides and fit into respec- ,tive T slots in the slides.

From the foregoing, it will be seen that I have provided an extensible table adapted for expansion and retraction, in which the parts are so arranged that after the leaves have been extended to a predetermined position with their inner edges beyond the lateral Lil edgesof the tabletop, the table top willforce the movable slides to move inwardly as the table top is dropping or riding down to a plane even with the top surface of the leaves. It will also be seen thatonly a veryslight exertion on the part of the operator, will be necessary to operate the said leaves for expansion and retraction as the weight of the table top is supported upon the stationary slide substantially theentire outward and inward movements.

It will also be understoodthat a similar set of slides having similar operating mechanism is provided at the opposite end of the table.

Having described my invention what I claim as new and desire to secure by Letters Patent is 1. In an extensible table, a fixed slide, a movable slide in operative engagement there with, a leaf secured to the movable slide, a vertically movable table top normally overlying the said leaf, means attached to the fixed slide and a cam on the movable slide, cooperating with said means to provide a clear ance between the table top and leaf when the table is being extended. r

2. In an extensible table, a fixed slide a movable slide in operative engagement there with, a leaf secured to themovable slide, a vertically mova le table top normally overlying the said leaf, means attached to the fixed slide, and a cam on the movable slide, coopcrating with the said means to swing the movable slide and leaf downwardly to provide a clearance between the table top and leaf when the table is being extended.

3. In an extensible table, a fixed slide, a movable slide in operative engagement therewith, a leaf secured to the movable slide, a vertically movable table top normally overlying the said leaf, a shoe slidably mounted on the fixed slide and providedwith a cutout, a depending projection on the table top normally resting on the shoe and out of alinement with the said cutout, means on. the movable slide to bring the cutout into alinement with the projection at a predetermined point in the outward movement of the said movable slide, a cam on the movable slide, and means on the table top projection in operative engagement with the said cam at the said point of travel to transfer the weight of the table top to the movable slide to cause the said slide to move inwardly to permit the table top to assume its lowermost position and to abut the leaf.

4. In'an extensibletable, a fixed slide, a novable slide in operative engagement therewith, a leaf secured to the movable slide, a vertically movable table top normally overlying the said leaf, a shoe sli'dably mounted on the fixed slide and provided with a cutout, a depending projection on the table top normally resting on the shoe and out of alinement with' the' cutout, a vertically slida'ble shoe stop fricti'onally maintained in'the fixed slide and projecting thereabove, meanson the movable slide to engage the shoe tomove same against the said :stop and position the cutout in the shoe in alinement with the table top projection at a predetermined point ofvthe outward movement of the movable slide, a cam on the movable slide, and means on the table top projectionin operative engagement with the said cam at the said point of outward movement to transfer the weight of the table top to the movable slideto cause the said slide to move inwardly to permit the table top to assume its lowermost position and to abut the leaf. a l

5. In an extensible table, a fixed slide, a movable slide in operative engagement therewith, a leaf secured to the movable slide, a vertically movable table top normally overlying the said leaf, a shoe slidably mounted on the fixed slide and provided with a cutout a depending projection on the tabletop nor mally resting on the shoe and. out of alinement with the cutout, a vertically slidable shoe stop frictionally maintained in the fixed slide and'projecting thereabove, means on the movable slide to engage the shoe to move sain agamst the said stop and position the cutoutin the'shoe in alinement with the table top projection at .a predetermined point. of the outward movement of the movable slide, a second shoe stop on the fixed slide, a. cam on the movable slide, and means on the table top projection in operative engagement with the said cam at the said point of outward movement to transfer the weight of the table top to the movable slide to cause the said slide to move inwardly to permit the table to assume its lowermost position abut the leaf and move the shoe stop to a position to permit the shoe to pass to the second stop when the table is extended prior to retraction.

6.111 an extensible table,=a fined slide, a movable slide in operativeengagement therewith, a leaf secured to the movableslide, a

vertically movable table top normally over lying the said leaf, a shoe slidably mounted on the fixed slide and provided with a cutout, a depending vprojection on the table top normally resting on the shoe and'out of alinem'entwith the cutout, a vertically slidable shoe stop frictionally maintained in the fixed slide and projecting thereabove, means on the movable slide to engage the shoe to move same against the said stop and position the cutout in the shoe in alinement'with the table top pro,- jection at a predetermined point of the out ward movementof the movable slide, a second shoe sto'p'on the fixed slide, a cam on the movable slide, means on the table top proj ection in operative engagement with the said cam at thesaid point of outwardmovement to transfer, the weight of the table top to the movable slide 'tocause the said slide to move inwardly to permit the table top to assume its lowermost'position abut the leaf andmove the shoe stop ,to a position to permit the shoe to pass to the second-stop when the table is extended prior to retraction, a plate on the movable slide toreturn the shoe and slidable shoe stop to normal position when the said slide-is nearing the end of its retracting movement, and means onthe movable slide for bridging the cutout in the shoe during the return to normal positionof the shoe.

.7. In an extensibletable, a .fixed slide, a movable slide in sliding engagement therewith, aleaf secured to the movable slide, atable top overlying'theleaf, a guide block at one end of the movable slide extending into the fixed slide, a cam at the opposite end of the said movable slide, a bracket on the fixed slide adjacent the cam when the table is in normal retracted position, a guiding extension on the bracket extending into the movable slide, a roller inthe-extension in engagement with the cam and a base onthe bracket clearing the movable slide so as to permit the movable slide to swing downwardly when the table is actuated for extension to produce a clearance between the leaf and table top.

8. In an extensible table, a fixed slide, a movable slide in sliding engagement therewith, a guide block at one end of the movable slide extendinginto the fixed slide, a bracket on the fixed slide at the end opposite -tothe guide block, partly extending into the movable slide, means on the said bracket and a cam on the movable slide in operative engagement with the said means to produce a lowering movement of the movable slide when the table is actuated for extension.

9. In an extensible table, a fixed slide, a movable slide in operative engagement therewith, a leaf secured to the movablevslide,ra vertically movable table top normally overlying the said leaf, a shoe slidably mounted on the fixed slide and provided with a cutout, a depending projection on the table top'normally resting on the shoe and out of alinement with the cutout, a stop in the fixed slide normally in spaced'relation to the shoe, and a member on the movable slide to engage the shoe to move same against the stop and position the cutout in the shoein alinement with the table top projection at a predetermined point in the outward movement of the movable slide to position the tabletop for lowerm 10 In anextensible table, a fixed slide, a movable slide in operative engagement therewith, a leaf secured to themovable slide, a vertically movable table top normally overlying the said leaf, a shoe slidably mounted on the fixed slide andprovided with a cutout, a depending projection on the table top nor.- mally resting. on the shoe and out of alinement with the cutout, a ,stopin the fixed slide normally in spaced relation to the shoe, a'

member on the movable slide to engage the shoe to move same against the stop'andposition the cutout in the shoe in alinement with the table top projection at a predetermined point in the outward movement of the movable slide to position the table top for lowering, and a cam on the movable slide arranged to cooperate with the table top projection at this point of the outward movement to permit the weight of the table top to be transferred to the movable slide to cause the said slide to move inwardly to permit the table top to assume its lowermost position and abut the leaf.

11. In an extensible table, a fixed slide, .a movable slide in operative engagement therewith,a leaf secured to the movable slide, a shoe on the fixed slide, a depending projection on the table top resting solely on the shoe during substantially the entireexpansion movement of the movable slide, and

means for shifting the shoe out of engagement with the table top projection when the movable slid'eis nearing the end of its expansion movement to permit the said projection to rest on the movable slide.

12. In an extensible table, a fixed slide, a movable slide in operative engagement therewith, a leaf secured to the movable slide, a shoe on the fixedslide, a depending projection on the -table top resting solely on the shoe during substantially the entire expansion movement of the movable slide, means for shifting the shoe out of engagement with the table top projection when the movable slide is nearing the end of its expansion movement to permit the said projection to rest on the movable slide and means for returning the shoe to again support the table top projections when the table .is actuated for retraction.

In testimony whereof Ihereunto afiix my signature.

WALTER P. SAUER;

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