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Publication numberUS2270217 A
Publication typeGrant
Publication dateJan 13, 1942
Filing dateJul 22, 1940
Priority dateJul 22, 1940
Publication numberUS 2270217 A, US 2270217A, US-A-2270217, US2270217 A, US2270217A
InventorsNorth Edwin W
Original AssigneeNat Lock Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Folding leg
US 2270217 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

E. W. NORTH Jan. 13, 1942.

FOLDING LEG Filed July 22, 1940 EdwinWMrih,

Patented Jan. 13, 1942 FOLDING LEG Edwin W. North, Rockford, Ill., assignor to National Look 00., Rockford, 111., a corporation of Delaware Application July 22, 1940, Serial No. 346,831

3 Claims. (Cl. 311-98) This invention relates to folding legs, and more particularly legs of this type which are applied to tables, especially card tables, although not so restricted, and the present application is in substitution, and continuation in part of an application filed by me on May 20, 1938, Serial No. 209,017.

The primary object of the invention is to provide a folding leg structure wherein a brace is employed, to hold the leg in operative position with the utmost of rigidity, and which at theIsame time enables the brace to be released, preparatory to folding of the leg, in an easy and quick manner.

The invention further and more specifically aims to provide a novel latch structure for the brace wherein the means affording a thumb grip for releasing the brace, forms a part of the means which holds the brace in positive latched position, thereby functioning in a dual manner.

still, further the invention aims to provide latching means for the brace which is practically proof against accidental unlatching movement in normal usage while still permitting free manual predetermined release.

A still further object of theinven'tion is to provide latching means for the brace which avoids the presence of sharp projections or the like proved means for mounting the leg and brace,

which means is of a simple compact and economical construction and occupies a minimum of space.

Still further the invention aims to provide a novel pivotal mounting for the leg wherein the pintle or pivotal pin thereof acts to brace the mounting, and which firmly holds the pin during upsetting of an end thereof in assemblage of the parts. I

Still further the invention aims to provide a mounting and bracing structure for the leg which is extremely strong and rugged, and which affords a maximum protection against the parts becoming loosened through long or continuous use.

The invention has :still further and other obdescri-ption.

In the drawing:

Fig. l is a bottom plan view of the invention, showing a fragment of a card table with one of the legs in folded position;

jects which will be later set forth and of themselves manifested in the course of the following Fig. 2 is a fragmentary longitudinal section, parts being broken away, showing the leg of the table in Figure l in extended or operative position and likewise showing the companion leg on the same side of the table;

Fig. 3 is an enlarged perspective View, partly broken away, of the free or latching end of the brace; and

Fig. 4 is a section on line 4--4 of Fig. 2.

In the illustrated embodiment of the invention, same is shown applied to a card table having a top T, and the customary depending apron A, or the like. A substantially L-shaped main bracket of sheet metal is provided, and which has a short leg I, which is attached by screws 2 to the apron. The bracket also has a long leg 3, formed with a substantially U-shaped bearing member 4, and is likewise secured to the apron by screws-5, the bracket being shown disposed in the corner of the apron as depictedin' Fig. 1.

The table leg isdesignated L, and is provided with a wear plate 6, which as shown in Fig. l, engages the U-shaped bearing 4, and is held in place by the pivotal pin or pintle l of the leg, and by a stud 8 carried by the leg L.

A second substantially L-shaped bracket 9 engages the side of the leg opposite to that on which two brackets together and both to the apron.

The pivotal pin or pintle 1 extends through the leg of the bracket 9', that engages the leg L, and at its outer end is driven into a socket Ill,

provided therefor in the apron so as to receive substantial support from the latter. The pintle l is formed with an integral rigid collar or equivalent abutment II, that engages the inner face of the closed side of the bearing 4. The inner :end of the pintle is headed at its outer end at I2, against the adjacent leg of the second bracket 9. It will therefore be seen that a three-point support is provided for the pintle 1, namely, by the bracket 9, bearing i, and the apron A, effectually resisting rocking movement of the pivotal connection of the leg relative to the table.

For the purpose of bracing the leg L, and latching same in operative position, a brace I3 is provided which is formed of spring metal and which is pivoted by means of a rivet M, at one end thereof to the longer leg 3 of the main bracket. to also space the table supporting'leg from the apron so as to accommodate the brace 13 in such space, the brace thus performing a dual func- It will be noted that the bearing 4 acts tion. The brace I3 is formed with an elongated slot l5 through which the shank of the stud 8 projects, the head 9 of the stud engaging the outer side face of the brace and exerting outward pressure thereagainst. The opposite end of the brace is formed with a similar pair of elongated cams or cam-like surfaces 16, which are located on the respective opposite sides of the slot and engage the under side of the head 9, of the stud. The ends of the cam surfaces are cut away as indicated at IT, so as to conformably engage the adjacent peripheral part of the head 9 of the stud.

The outer end of the brace I3 is formed with a finger-engaging part or member l8, which latter as depicted in Fig. 2 may have the word Press applied thereto. The finger-engaging member as clearly depicted in Figs. 1, 3, and 4 is inclined downwardly and inwardly toward the leg and is formed with a raised inner side I9, which is provided with a curved seat 20 thereby to conformably engage the opposite portion of the periphery of the head 9, of the stud, when the parts are in latched position as shown in Fig. 2.

As shown in Fig. 4, the cam surface or tracks are preferably formed by pressing the under side of the brace l3 outwardly at points adjacent the opposite sides of the slot [5, as indicated at 25. Further as depicted in Fig. 3, the ends 2| of the raised portion l9 are beveled or rounded so as to eliminate any sharp projections.

Viewing Fig. 2 particularly, it will be noted that when the brace is in its operative position, the head 9 of the stud lies substantially flush with the high ends of the cams l6, and with the raised side IQ of the finger-engaging member l8, and in addition the free outer end 22 of the finger-engaging member is curved, whereby it will be seen that sharp projections are completely eliminated, which might catch in the clothing of the players or other users of the table.

In assembly of the device, the pintle I is applied to the main bracket in the position shown in Fig. 1, and with the brace I3 attached to the main bracket following which the bracket and pintle are secured in position and the screws 5 driven into position. The wear plate 6 is next threaded over the stud and the pintle l1 and the leg then lies positioned over the stud and pintle, following which the stud has the end opposite to its head 9, upset as indicated at 23, and the inner end of the pintle is likewise upset as shown at l2. In the upsetting operation of the pintle, it will be seen that the abutment ll acts to support the U-shaped bearing 4 and in addition this collar or abutment l I, together with the upset end l2, holds the leg against lateral movement in both directions as evident in Fig. 1, and also enables the frictional engagement of the wear plate and of the leg with the second bracket tobe regulated as desired.

It is particularly to be noted that the pintle' leg is pivoted, affording maximum protection' against the parts becoming loosened through continuous use, thereby overcoming the common or well known wobbling movements of the legs.

It will be seen in operation that since the brace is of spring nature and exerts outward tension against the head 9 of the stud which will ride upward over the cams I6 until leaving the highest or inner ends thereof, and then snap into the seat provided by the brace, which has a circumferential bounding wall defined by the high ends of the cams, and by the upraised portion 2| at the outer end of the brace that engages the periphery of the head of the stud.

While the invention is illustrated and described in connection with a card table, it is to be expressly understood that same is not so limited, but is susceptible to all uses in which a folding leg is employed, such as with hinged ironing boards, shelves, or other supports, which uses are given merely by way of example, and not exhaustive enumeration of all uses to which the invention can be put.

The right is also expressly reserved to make such changes and alterations as may fall within the scope of the following claims.

What is claimed is:

1. In a table or like leg structure, a leg, means to pivotally connect the leg to a table or like member, a headed stud carried by the leg, a-

spring brace, means to pivotally connect the brace to a table or like member, said brace having an elongated slot through which the shank of the stud extends and exerting pressure out-' wardly against the underface of the head of the stud elongated cams on the brace at the respective sides of the slot thereof engageable with the underface of the head of the stud, said cams having outer ends which are shaped to conformably engage the adjacent part of the head of the stud in latched position of the parts, and a finger-engaging member at the outer end of the brace having a raised inner side formed to conformably engage the opposite part of the head of the stud, said inner side of the fingerengaging member being disposed in substantially the outer face of the head of the stud in latched position of the parts so as to lie flush therewith.

2. A table leg structure in accordance with claim 1, wherein the finger-engaging member extends at an angle toward the supporting leg, and wherein the ends of the raised inner side of the finger-engaging member incline downwardly and ward y of the brace. and wherein the edge of the outer free side of the fingerengaging member is curved.

3. A mounting for table or like legs including a bracket having means for attachment to a table top or other support, said bracket having an outwardly bowed integral bearing member of substantially U-shape, a supporting leg having one side engaged with the closed side of the U- shaped bearing member, a second bracket engaging the opposite side of the supporting leg, and a pivotal pin extended through the second bracket and having a headed end engaged with said second bracket, said pin being extended through the supporting leg and through the bearing and into a part of the table to be supported by the latter, and having its inner end abutting said part of the table, and said pin having a collar fixed thereon and engaging the inner face of the U-shaped bearing of the first named bracket.

EDWIN W. NORTH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2508912 *Jul 23, 1948May 23, 1950Samuel GinnsFlaring tool
US2567417 *Jan 3, 1949Sep 11, 1951Shwayder BrothersLocking brace for folding table legs
US3049387 *Mar 3, 1960Aug 14, 1962Fred SchlegelFoldable table
US3945389 *May 11, 1973Mar 23, 1976Smith Alfred AFoldable walker
US4298016 *Jun 23, 1980Nov 3, 1981Garelick Mfg. Co.Locking mechanism for foldable walker
US6913414 *Jun 20, 2002Jul 5, 2005Nifco Inc.Holding mechanism of rotating member
EP1145665A1 *Apr 9, 2001Oct 17, 2001Rodet LoisirsFolding table
Classifications
U.S. Classification108/160
Cooperative ClassificationA47B3/0915
European ClassificationA47B3/091B6