US1950966A

US1950966A - Table leg support

Info

Publication number: US1950966A
Application number: US567201A
Authority: US
Inventors: William M Boenning
Original assignee: FERGUSON BROTHERS Manufacturing Co
Current assignee: FERGUSON BROTHERS MANUFACTURING Co
Priority date: 1930-07-11
Filing date: 1931-10-06
Publication date: 1934-03-13
Anticipated expiration: 1951-03-13

Description

March 13, 1934- w. M. BoENNlNG 1,950,966

TABLE LEG SUPPORT Filed oct, 6, 1931 Patented Mar. 13, 1934 TABLE LEG SUPPORT William M. Boenning, Manitowoc, Wis., assigner to Ferguson Brothers Manufacturing Company, Hoboken, N. J., a corporation of New Jersey Application October 6, 1931, Serial No. 567,201

3 Claims.

My invention is directed to improvements in that type of folding leg support in which each folding leg may be automatically locked in its unfolded position by the coaction of two folding braces hinged to swing at substantially right angles to each other and in which the manual folding of the leg after its locking brace has been manually released, serves to also impart a folding movement to the locking brace; spring means being employed tending to swing the locking brace to its unfolded or locking position and the leg and its brace to their unfolded position after they have been manually started on their unfolding movement.

My invention is an improvement upon the table leg support shown, described and claimed in the copending application filed by me July 11th, 193e, Serial No. 467,241, now Patent No. 1,901,697 of Mar. 14, 1933.

A practical embodiment of my invention is represented in the accompanying drawing in which:

Fig. 1 represents a detail bottom plan View at one corner ci the table with the leg (shown in section) and its coacting braces in their unfolded and interlocked positions;

Fig. 2 represents a similar view with the leg and its coacting braces in their folded positions;

Fig. 3 represents a section taken in the plane of the line lll-111 of Fig. 1, looking in the direction of the arrows, the movable parts being shown in dotted lines in their partly folded positions;

Fig. 4 represents a section taken in the plane of the line V-IV of Fig. 3, looking in the direction of the arrows, the movable parts being shown in dotted lines in their partly folded positions; and

Fig. 5 represents a bottom plan view of the bracket which forms the hinge support for the folding leg and its coacting braces.

The table top is denoted by 1 and its depending frame sides by 2 and S. A bracket 4, preferably of sheet metal, is shaped to fit snugly against the underside of the table top in the corner formed by the adjacent frame sides 2 and 3. This bracket is provided with depending

flanges

5 and 6 which are secured in any desired manner as by screws 7 and 8, to the inner faces of their respective frame sides 2 and 3.

Two coacting braces, preferably of sheet metal, which form the table leg support are hinged to the bracket 4 as follows:

The bracket is provided with two spaced depending ears 9 and l0 by means of which the folding leg brace 12 is hinged to the bracket.

(Cl. l5-11) This folding leg brace is secured along the inner side of the folding leg 1l as by screws 13, the hinged end oi' which brace is formed into an eye lll through which a pivot pin 15 passes from the ear 10 into the depending ange 6 of the bracket. This leg brace 12 is provided with a branch 16 having its inner end ormed into an eye 17 through which a pivot pin 1S projects from the bracket ear 9. The outer edge of this brace branch 16 is inclined for a portion of its length as shown at i9, to form a cam surface terminating in a lateral shoulder 20 at its free end.

The or locking brace 21 is hinged to the bracket 4 to swing at substantially right angles to the leg brace by forming at the inner end of this locking brace an eye 22 through which a pivot pin 23 passes from an ear 24 depending trom the bracket 4, into the depending flange 5 of bracket. A coil spring 25 surrounds the eye 22 of the locking brace 2l with one end engaging the bracket 4 the other end engaging the brace, which spring tends to swing the brace to its unfolded or locking position when released by the unfolding movement of the leg brace.

This locking brace 21 is provided with a hook 21* at its free end which is adapted to embrace the lateral shoulder 2Q on the branch 16 of the folding leg brace for locking the folding leg brace in its unfolded position against unintentional release. The inner edge of this locking brace 21 is inclined as shown at 26, to form a cam surface which ccacts with the cam surface i9 of the folding leg brace during the folding and unfolding movements of the leg.

The axis of the locking brace is preferably made slightly ofi a right angle to the axis of the iolding leg brace to ensure the efiective coaction of the cam surface of the two braces as they are folded and unfolded.

In operation: Presupposing the parts to be in their unfolded and interlocked positions as shown in Figs. l and 3 and it be desired to fold the parts, the procedure would be as follows:

The locking brace 21 is manually swung in wardly a sufficient distance to release its hook 21* from engagement with the lateral shoulder 2Q of the folding leg brace, this position being illustrated in dotted lines in Figs. 3 and 4. The leg and its brace may then be swung to their folded position, this folding movement of the leg causing the coaction of the cani surface 19 of the leg brace with the cam surface 26 of the locking brace to fold the locking brace against the underside of the table top. The coil spring 25 when the parts are in this position will not exert sucient tension on the folded locking brace to cause the unfolding of the parts. To unfold the leg, the leg and its brace are manually started on their unfolding movement. The tension of the spring 25 and the coaction of the cam surface 26 of the locking brace with the cam surface 19 of the leg brace will unfold the leg and the two braces to a point Where the locking brace will swing into position to `cause its hook 21"c to embrace the lateral shoulder 20 of the leg brace, to lock the parts in their unfolded positions.

From the above description it Will be seen that I have provided a very simple, effective and rigid folding leg support and one which may be readily manipulated.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiment herein shown and described, but

What I claim is:

1. In a folding table, a table top, a corner bracket and leg and locking braces hinged to the bracket at substantially right angles to each other and adapted to interlock when unfolded,

said braces having coacting cam surfaces to erisure the folding of the locking brace by the leg brace after the locking brace has been started on its folding movement.

2. In a folding table, a table top, bracket and leg and locking braces hinged to the bracket at substantially right angles to each other and adapted to interlock when unfolded, said braces having coacting cam surfaces to ensure the folding of the locking brace by the leg brace after the locking brace has been started on its folding movement and the unfolding of the leg brace by the locking brace after the leg brace has been started on its unfolding movement.

3. In a folding table, a table top, a corner bracket and leg andv locking braces hinged to the bracket at substantially right angles to each 0ther and adapted to interlock when unfolded, said braces having coacting cam surfaces to ensure the folding of the locking brace by the leg brace after the locking brace has been started on its folding movement and the unfolding of the leg brace by the locking brace after the leg brace has been started on its unfolding movement, and spring means tending to swing the locking brace and thereby the leg brace to their unfolded and interlocked positions.

WILLIAM M. BOENNING.