US2517125A - Adjustable supporting leg structure for drums and other articles - Google Patents

Description

g- 1950 w. F. LUDWIG ADJUSTABLE SUPPORTING LEG STRUCTURE FOR DRUMS AND OTHER ARTICLES Filed May 16, 1947 [Z FZINIZI/NTOR. 6Q??? 26 wt Patented Aug. 11,1950

ADJ US TABLE SUPPORTING LEG STRUCTURE FOR DRUMS AND OTHER ARTICLES William F. Ludwig, Chicago, 111.

Application Maylfi, 1947, Serial No. 748,410

1 Claim.

This invention relates to improvements in adjustable supporting leg structures for drums and other articles, and have for its main object to provide supporting means which are capable of being projected downwardly through bracket members mounted rigidly upon the shell of the drum, or which are suitably mounted upon other types of articles such as chairs, tables and the like, without requiring the manipulation of any other element of the structure or bracket member, and wherein the bracket members are equipped with manually operable clutch means operating automatically to prevent the supporting legs from moving upwardly relative to the bracket members responsively to the load imposed upon said legs.

A suitable embodiment of the invention is illustrated in the accompanying drawings wherein with supporting legs constructed in accordance with the invention.

Fig. 2 is a fragmentary, vertical, sectional view, taken on the line 2--2 of Fig. 1, showing a leg portion in elevation and the means for preventing upward movement of the leg in normal engaging position.

Fig. 3 is a view similar to Fig. 2 showing the leg engaging means of Fig. l in the position to which the same are forced during downward movement of a leg relative to a bracket member.

The invention comprises, as to each of the several supporting leg structures, a bracket member which comprises a fiat sheet metal middle portion l which is equipped with terminal flanges 2 equipped with lips 3.

The said lips 3 are disposed parallel with said middle portions and are equipped with perforations through which the shanks of suitable de vices l pass by means of which the bracket member is secured rigidly to shell 5 of the drum.

The said middle portion 1 and the said lips 3 of the bracket members are disposed vertically while the flanges 2 extend horizontally of the same and are provided with central openings through which the supporting legs 6 pass slidably.

A lever l, of sheet metal, is of width equal to that of the upper flange 2 and is equipped at one end with a flange 8 which bears along its terminal edge against a lower side edge portion of said flange.

Said lever l is equipped between said flange 8 and its other end with an opening through which the leg 6 passes, said opening being of shape and size common to toggle levers, for clutching a rod Fig. l is a perspective view of a drum equipped of any selected cross-sectional shape passing through said opening when said lever is disposed in the position of Fig. 2.

The length of said lever 1 is such that its free end projects as far as necessary beyond the other side edge of the upper flange 2 to render it easy for theoperator to swing said lever l on its fulcrum to the position of Fig. 3 against the action of the normally compressed spring 9 which holds said lever normally in the position of Fig. 2.

The said spring 9 is interposed between the lower flange 2 and said lever l, the latter being disposed and confined in the free space between the drum shell 5 and the portion 1 of the bracket member against lateral movement and held by the leg 6 against more than a very slight longitudinal movement relative to the bracket member.

When the leg 5 is pushed downwardly, it causes the tongue or lever l to be swung downwardly against the action of the spring 9 sufliciently to permit downward movement of the leg 6 but at the instant that said downward push on the leg 6 ceases, the lever I is restored to the position of Fig. 2 to clutch the leg 6 against movement in either direction longitudinally and rotatably relative to the bracket member.

The legs 6 comprise rods of metal of any shape in cross section that may be desired and the several openings through which the same passes are, of course, of similar shape.

Each leg is equipped with a suitable ferrule, such as a foot member H! of rubber or the like, and at upper end portion with suitable means, such as the projection II to prevent the leg 6 from passing through the said several opening in the flanges 2 and lever l, but such removal can be eifected by removal of the members I!) if desired.

I claim as my invention:

A device of the type specified, comprising a channeled sheet metal member having parallel side edges and comprising a straight middle portion equipped with terminal flat flanges perpendicular thereto and equipped with terminal outwardly projecting lips parallel with said. middle portion, said flanges equipped with equal axially aligned central openings, a flat L-shaped sheet metal lever of width equal to the length of one of the first-named flanges and having the extremity of its flange engaged with an inner face of one of said first-named flanges adjacent a side edge thereof, said lever equipped with an opening of slightly greater area than and axially aligned with said first-named openings, a helical compression spring interposed between said lever and REFERENCES CITED the other of the first'named flanges and rod The following references are of record in the passing telescopically through said first-named me of this patent:

openings and said spring, and loosely through the opening in said lever, said rod co-operating 5 UNITED STATES PATENTS with the middle portion of said channeled mem- Number Name Date her and the opening in said lever to hold said 342,062 Bemis May 18, 1886 1ever against lateral movements relative to said 563,908 Bolton July 14, 1896 channeled member. 836,303 Christensen Nov. 20, 1906 Y 10 873,186 Sweetland Dec. 10*, 1907 WILLIAM F. LUDWIG. 2,051,969 Shastock Aug. 25, 1936

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