US1793979A - Extension-table lock - Google Patents

Description

Feb. 2451931.

wE sN ER 1,793,979

EXTENSION: TABLE LOCK Filed Jail. zs, 192s I231} zo I I IHVEHTOR',

1c M 6/4 Weaancr; 27 25 B l (26 J O Q I 5 fll'i'orne s.

Patented Feb. 24, 1931 Urrsn srarss PATENT OFFICE cLAY wnnsnna, or NEWCASTLE, INDIANA, Assrenon TO THE noosrnn MANUFAC- ronrive COMPANY, OF NEWCASTLE, INDI NA, A coRPoRATIoivo INDIANA EXTENsioNj-TABiin noox Application filed January 28, 11928. Serial No. 250,166.

This invention relates to tables having extension tops whereby one or more leaves may bereniovably added to secure a larger top 7 area. B vention to provide a locking means whereby theinovable top sections may be secured in selective positions to prevent accidental opening of the top. a The following 18 a description of one part 0 ticular form of the invention as shown in the accompanying drawing in which- Fig. 1, is a fragmentary top plan View of an extension top table embodying my invention;

Fig. 2, a fragmentary side elevation of the table;

Fig. 3, a transversevertical section on an enlarged scale on the line 33 in Fig. 1;

Fig. 4:, a longitudinal vertical section on an enlarged scale on the line 44: in Fig. 1; and

Fig. 5, a transverse vertical section on the line 55 in Fig. 4.

Like characters of reference indicate like parts throughout the several views of the drawings.

7 I form a table skirt 10 supported by the legs 11 and having the side rails in one piece.

A center rail 12 is centrally supported between the skirt ends to have its top face slightly above the skirt top. Each vertical face of the rail 12 has a longitudinal dove-tail groove 13 cut therein to slidingly receive therein the correspondingly shaped tenons 14 and 15 of the slides 16 and 17 respectively A so that the slides may not be displaced laterally froin the rail 12 but are free to slide longitudinally along the rail, one on each side.

At the center on the top face of the rail is pivotally mounted a spur gear 18 to have its top face flush or slightly below the top of the rail 12. A rack bar 19 is secured to each slide 16 and 17 to have its teeth mesh with 9 the spur gear 18 so that as one slide 16 is moved along the rail 12 the other slide 17 is moved in the opposite direction by the gear 18.

A top section 20 is secured to the top face of the slide 16 toward its outer end, and a similar top section 21 is secured to the slide 17. In addition to being supported on the slides It is the particular object of this in 16 and 17 the top sections rest 011 castors 22 projectedupwardly fromthe inner sidesof the slcirtends so thatthe top sections may be moved toward andaway fromeach other very easily. By pulling out on the top section 20,

"the top section 21 is correspondingly carried outwardly in the oppositedirection and the desired number of table leaves 23,hereshown astwo innuniber, may be laid across the skirt sides between the sections 20 and 21, and the sections then be moved inwardly to grip the leaves therebetween, dowelpins 24: being employed in the usualandwell known manner, but as the top sections 20 and 21 are so free to be moved, a slight pull on either section 20 or 21 would causean opening to befor ned therebetween, and lsupply a simple, elfec tive ineansfor securing the sections 20 and 21 in the desired positions. 9

This means comprises a lever 25 pivotedto rock in a'vertical plane near one end on the side of the rail 12 where it will not be contacted by the slide 17. The lower end ofthe lever 25 carries a foot 26 which passes under the rail 12 to'extend across under theslide 16 in the pathfiof the downwardly hanging bar '27 which is attached to the outer face ofthe slide'16. This bar 27 is formed to have a plurality of notches 28 out in its lower edge,

these notches being spaced apart a distance equal tohalf the widthof each of the table leaves23.

The foot-26 is normally pressed against the bar 27 to enter these notches 28 as slide 16 is moved, by reason ofthetension spring29 engaged by oneend inthetop endofthe lever 25 and by the other end on the post 80 secured in therail 12. (Fig. 4c.) The notches 28 are 9 formed to have vertically disposed faces at the inner sides of thenotchestoward theioenter of the table and slopingfaces extended out slidingly through the skirt end to carry a knob '32 on its outer end. By pushing in on the knob 32, the lever 25 may be rocked to disengage the foot 26 from the notches 28; V

' Since one slide 16 can not move independently of the other slide 17 the locking means above. described is applied to but the one slide 16, the slide 1? being secured in association with the slide 16 by reason of the intermediate gear 18. r

What I claim is:

I. In a table having a top in two slidably,

united members, a skirt, a fixed rail,-means for correspondingly slidingthe other top member in an opposite direction when one 7 of the top members is slidingly moved, a lever pivoted to the rail having a foot, a plate 1 carried by one of the table top members hav- .ing one or more notches to engage the foot Y ver into lock and manually operative push rod release means. V

2. In a table-having a top in two slidably' I of the lever, said notches having vertically of. the lever and prevent outward movement of the top member, aspring pressing the leun'ited members, a skirt, a fixed rail, means for correspondingly sliding the other top member in an opposite direction when one of the top members is slidingly moved, a lever pivoted to the rail having a foot, a plate carried by one of the table top members having one or more notches to engage the foot disposed faces on their sides toward the center of the table sloping opposite faces, and

a spring influencing the lever to normally press its foot into lock with-the notches of the bar and manually operated push means for unlocking it. V v 3. In a table having a top in two slidlably united members, a skirt, a fixed rail, means for correspondingly sliding, the other top member in an opposite direction when one of the top members is slidingly moved, a le- I ver pivoted to the rail having a foot, a plate carried'by one of the table top members having one or more notches to engage the foot of the lever, said notches having vertically disposed'faces on their sides toward the center of the tableand sloping opposite faces, and aqspring influencing the lever to normally press its foot into lock with the notches of the bar, and amanually operated means 7 extending outside of the skirt, from the lever to move the lever in the direction to release its foot'from the notched bar.

- 4. In a table having atop in two slidably united members, a skirt, a fixed rail, means for correspondingly sliding theother top member in an opposite direction when one of the top members is slidingly moved, a

lever pivoted to the rail having a foot, a

plate carried by one of the table top .members having one or more notches to engage the'foot of the lever, said notches having vertically disposed faces on their sides to-

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