USRE905E - Improvement in faucets - Google Patents

Description

` UNITED STATES PATENT OFFICE.

JAMES POVELL, OF CINCINNATI, OHIO, ASSIGNEE `OF MARTIN ROBBINS AND JAMES POWELL.

IMPROVEMENT IN FAUCETS.

Speciiir'ation forming part of Letters Patent No. 22,402, dated December 2l, 1858; Reissue No. 905, dated February 2l, 1860.

cocks in which a valve and seat (and eccentric key-stem) take the place of the more customary taper chamber and pertorated'plug; and it consists in arrangements to insure the effective relative working of the valve-stem and key, to prevent leakage around the stem of the latter and compensate for the gradual wearing of the packing, and to avoid any abrasive i action between the valve and its seat.

lt is of especial importance in such faucets to preserve the valve-stein` from any lateral motion.

rFor this purpose it has been custom ary to construct the valvestem with a yoke having guide-pieces extending from each Vend or side, with corresponding openings or grooves in the chamber of the faucet. rlhis is disadvantageous in many respects, chiejy from necessitat V ing an undue enlargement of the valve-yoke and the cock chamber,and from its complicated nature rendering the faucet expensive and liable to get out of repair. lt is also very neces sary in the construction of the packing around the stem of such faucets to provide for its" gradual wearing away and compensate for any deflection ofthe key from its true position by the strain that is exerted upon it Aby the valvestem. Itis usual to construct such key-stems with a collar or flange ttcd to the cap with or without packing around it, hut as it is perf fectly rigid it soon wears away and allows the fluid to escape between the cap and stem.

The object of ourl invention is to so construct and operate the valve-yoke that it may be confined to a strictly rectilinear path without requiring any projection on its sides or ends; also to compensate for any deflection of the key-stem and to provide eft'ectually for the gradual Wearing away of the rubbing-surfaces of 'the packing and produce a reliable watertightjoint of simple construction.

In'the accompanying drawings, Figures and 2 are respectively a vertical 'and a horizontal axial section, and Fig. a diagram illustrating the action ot' the compensating cushion and collar. I

A represents the barrel or chamber, B the neck, U the nozzle, D the valve-seat, E the vulve, and F the cap.

J is thekey-stem,and K t-hehandle b v which it is rotated.A L is the valve-stern connected at its front end with a yoke, M, having on its upper side the represented cavity for the ready insertion of the key-stem, and Ion its under side a floor, N, which rests and slides upon a standard or guide, G, projecting upward from the floor of the chamber A. In t-he present illustration, the floor N is perforated with an oblong slot, a, to permit the traverse'ot the valvestem and at the same time prevent its lateral deviation froma right line, and the key-stem terminates in a point,E[,which passes through the said slot and turns in a countersink in the guide G. The key-stem J has on one side, at or near its lower end, a projection, h, which, as the key is turned, operates thc valve through the mediumof the yoke M, said yoke. being provided with three bearings,m m m, against which the projection h acts.

h is a ilange surmonnting the projection h, and engaging above the valve-stem L, so as to assist in confining it to a horizonal path.

The rectilinear motion of the valve is further insured by guide-pins O, which are especial] y useful in steadying the valve to its seat.

rlhe ilange h may be dispensed with, if preV ferred, as the valve-stem L can be confined to a horizontal path through the medium of the under side of projection h and the upper side of floor N.

It is not necessary that the yoke M should entirely encircle the projection h, as the floor N is suiticient connection between the three bearing-points 'm m mf', against which the projection It acts. Nor is the invention conned to the precise shape or dimensions of the guide G. The guide G, being projected from the wall ot' the faucet, provides not only surface upon which thevalvestein lslides and is gnided,but economizesrnetal and aliords ample space around it for the free passage of the water or other fluid, without undue eny the key-stein J from dropping1 too farinto the chamber A.

The guidepins 0 may be elongated, so as to occupy the whole length of the opening of' chamber A, rendering1 them more durable and the valvefstem 'steadier in its motion.

The severe horizontal pressure ofthe valvestem upon the key in this class of cocks tending' to throw the key-stern J out of line, the ordinary collar or packing is found insufficient to insure a tight joint after it has been for a time in'use. To remedy this defect, the collar I is placed low down, and over ita washer, I), and annular cushion Q, of india rubber or other suitable material, which supports a loose collar, It, so as to cause it to fit snugly up to the under side ofthe cap, althoughthe I key may be deflected.

Fig. 3 exhibits the action of the cushioned collar. The cushion also acts advantageously l in compensating for the wear of the loose collar It by constantly exerting' an expansive pressure against it. It will be evident that this arrangement is equally applicable to valves closing` either in the direction' ot the current or against it, and that it may be apcollar I, cushion Q, andfloose collar It, or their plied to the various descriptions of faucets,

suchas stop-cocks, basin-cocks, and also to steam-cocks. n

I am aware that valve-stems'have been guided in a rectilinear path, but know of no previous instance in which this result is accomplished through the medium of a projec-` tion from the inside of the wall of the faucet 1. The applica-tion'to'the key-stem of' the equivalents, in the manner or for the purposes described. e

2. The valve-stein L, formed with three bearing-surfaces, m mmf, when connected by a'tloor, N, andoperated upon by a suitable cam, lr, inthe manner and for the purpose eX*- plained.' y

3. yThe elevated or projecting guide G, or

its equivalent, when combined, substantially as andfor the purpose set forth, with a valvestein formed and adapted to be actuated by a cani or other eccentric on the lreystem in both opening and closing the valve.

In testimony of which, as the invention of MARTIN Romains and myself, I hereunto set my hand.

JAMES POWELL. Witnesses:

Gao. l- KNIGHT, 'FRANCIS MILLWARD.

the said MARTIN ROBBiNs and Iny- Self f

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