US335774A

US335774A - bichabdson

Info

Publication number: US335774A
Authority: US
Publication date: 1886-02-09
Anticipated expiration: 1903-02-09

Description

(No Model.)

J. D. RICHARDSON.

TRIPOD STANDARD.

No. 335,774. Patented Feb. 9, 1886.

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JOHN D. RICHARDSON, OF BROOKLYN, ASSIGNOR TO HIMSELF, AND FRANK L. MANCHESTER AND JOSEPH \V. SULLINGS, BOTH OF NEVV YORK, N. Y.

TRIPOD-STANDARD.

SPEGH'ICATION forming part of Letters Patent No. 335,774, dated February 9, 1886.

Application (ill-d l obruary 13, 1885.

To ctZZ whom it may concern:

Be it known that 1, JOHN D. lticrIARnsoN, of Brooklyn, in the county of Kings and State of New York, haveinvented a new and useful Improvement in Tripod-Standards, of which the following is a specification.

One feature of my invention is applicable to tripod-standards for dress-forms, stands, tables, and other articles, whether the vertical post or standard be adjustable or not, and in which the legs or feet are so pivoted that they may be swung into positions parallel with the standard, for convenience in packing and carrying the same, or into positions radially divergent from the standard, for aiiording the same a stable support.

Another feature of theinvention is applicable only to those standards in which an inner adjustable section of pipe or rod is capable of being slid vertically in a tubular fixed standard, and there secured at different heights.

The invention will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional elevation of a standard and tripodsupport therefor embodying my invention. Fig. 2 is a horizontal section thereof on the plane of the dotted line as m, Fig. 1. Fig. 3 is a similar section on the dotted line 1 y, Fig. 1; and Fig. 4 isasection similarto Fig. 3, showing a modification of my invention.

Similar letters of reference designate corresponding parts in the several figures.

A designates the main standard, which here consists of a tube of fixed length; andB designates the legs, which constitute a supportingter hold on the tube A, the surface of the lat ter may be circumferentially grooved or otherwise formed with recesses or depressions in which the metal will hold. The collar may thus be secured in place rigidly and at small Serial No. 155,905. (No model.)

I expense. As hereshown, the collar is slightly concaved on the under side, and when the tube and collar are inverted the soft molten metal collar being slightly notched to form an inletopening, if desired.

On the tube A, below the collar and in the order named, are loosely placed a flange or collar, D, made conical on the under side, a reversely-conical hub,stock-piece, or center,ll, and a cap or shell, F, and these are all secured on the tube A by a nut, G, screwed thereonto. The shell Fand hub or center E might be cast together, but would then require to be cored out.

The conical hub, stock'piece, or center It is of circular form transversely, as shown in Fig. 2, and has a number of flat or plain surfaces or seats, bone for each leg 13. To these seats the legs B are secured, each by a single pivot or rivet, c, and being thus secured they may be turned down, so as to be radially divergent from the hub 1G and from each other, and thereby afiord a stable support for the stand ard. The legs may also be turned into position approximately parallel with each other, and at the side of the standard A, when de sired, as shown by dotted lines in Fig. 1, and thereby afford convenience for packing or carrying the article.

The loose collar D is recessed on the upper side, and between it and the fixed collar 0 is a spiral spring, d, which exerts a downward pressure on the collar D. The length of the legs B above their pivots c is such that their ends 8 project above the top of the hub or center E, as shown in Fig. 1, and below their pivots 0 they have shoulders s, which, when the hub or center E. Consequently, whether the legs are in the position shown in full lines or inverted. as shown in dotted lines, the com cal collar D always bears on the ends 8 or shoulders s, and is pressed against thein'by the spring (I.

Now, it will be understood that by loosening the nut G the cap F, hub or center E, and its legs will be freed or loosened from each other, and the legs may then be turned; but by tightening the nut said parts will be clamped tightly together, and the conical cola may be readily run in, the interior of the p the legs are inverted, come above the top of 0 lar D will press so tightly upon the ends 8 or I shoulders s of the legs as to hold them against movement on their pivots and render them rigid for the time. It will be evident that the spring d is not an indispensable element, although I desire to useit, because it will cause the collar D to automatically press against the ends or shoulders s or s of the legs, and so hold them until the nut G can be tightened.

In this example of the invention the standard A has fitted within it an extensible standard, A, which may also consist of a tube; but if the fixed standard had no such extensible section it might be a rod instead of a tube. At the top of the standard A is a clutch or clamp for securing the adjustable section A at any elevation desired. This clutch consists of a collar, nut, or gland. II, made internally conical, as shown at and screwed upon the top of the tube A. WVithin the collar or nut H is a wedge, I, curved internally to fit the tube A, and externally to fit the nut II. The wedge is also tapered externally to fit the conical surface of the nut H. This wedge, as shown in the horizontal section, Fig. 3, partly embraces the rod or tube A. It rests upon the top of the tube A, and by tightening the nut H the wedge I is crowded or wedged against the tube A, and the latter is thereby held in position vertically.

The tubes A A may be of gas-pipe, and the otherparts may be malleable cast-iron or other cast metal.

Fig. 4 differs from Fig. 3 only in having a block or piece of india-rubber or other elastic or yielding material, I, fitting in the gland or nut H on the side of the adjustable rod A, opposite the wedge I. WVhen the gland or not is screwed down to tighten the wedge I against the standard A, the yielding block I is compressed and forms a brake to prevent the sudden fall of the standard A and the article supported thereby when the gland or nut H is loosened.

I am aware of United States Letters Patent No. 132,704, granted October 29, 1872, to Asa \V. \Vhite, for music-stands, and donot claim as of my invention anything shown or described therein.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with a standard and i a collar fitting'thereon, of a conical hub or center loosely fitting the standard below the collar, legs each pivoted to the conical hub or center and having their ends s and shoulders 8 presented above the hub or center and bearing against the collar, and a nut applied to the bottom of the standard and serving to clamp or force the ends or shoulders of the legs upon the collar, substantially as herein described.

2. The combination, with a standard and a collar, D, thereonhaving a conical lower surface, of a conical hub or center fitting the standard below the collar, legs B, each pivoted to the hub or center, and having ends and shoulders s s, on which the conical face of the collar acts to clamp them in place, and a nut applied to the standard for clamping the legs and collar together, substantially as herein described.

3. The combination, with the standard and a collar fast thereon, of a loose collar, D, having a conical lower face, a spring, (I, interposed between said collars, a conical hub or center, and legs pivoted thereto and having ends and shoulders ss, on which the collar D acts, and a nut for clamping the legs and collar D together, substantially as herein described.

4. The combination, with the fixed stand- I J. D. RICHARDSON.

Witnesses FREDK. HAYNES, MATTHEW PoLLocK.