US1057717A - Acid-valve. - Google Patents

Description

R. T. EVANS & W. G. NORD. A GID VALVE. APPLICATION FILED 00T.19, 1911'.

WITNEssEs: /0 @emwmxwlbg 1 A1-voguer# Y UNITED STATES .PATENT oEEicE.

msnm 'i'. Evans .um WALTER e. Nomi',- or YouNes'rowN; omo'.

ACID-VALVE.

- as strong acids, which cause a rapid corrosion of the usual metals employed in theJ ordinary valve -mechanism.

To the accomplishment of these and related ends, said invention, then, consists of the means hereinafter fully described 4and particularly pointed out in the claims.-

The annexed drawing and the following description set forth in detail certain mech- -anism embodying our invention, such disclosed means constituting, however, but onel of the various mechanical forms in which the principle of the-invention may be used. In said annexed drawings z-'the figure isa central longitudinal section through ^our improved valve mechanism illustrating i the construction and""rrangement of parts..y In the ligure the valve casing 1 is shown having three chambers, in.one of which is disposed a valve seat 2 and in another a stoper 3 for closin said seat, the third cham- Eer being the inlet chamber.

The stopper is held in a cup-like terminal 4 .of the reciprocating member 5 which is mounted in the valve casing and is threaded A40- at the upper end, adaptin it to be reciproo prevent the incated by a hand-wheel 6. troduction ofacidinto the upper part of lthe casing in which it would attack the threadying on the reciprocable member, we place a washer 7 around the same in th casing,

thereby preventing an;r such action. The

valve seat 2 will be formed of any suitable acidresisting soft metal, such as lead. The lead seat is held firmly in place'in thecasing '50 by means of grooves 9 which are'cut in the sides of the casing.V The leadenters the same, roviding a simple and effective means (forkho ding the seat in lace. The `stop er 3 vly'll be madeof porce ain, glass, or ot er A ac'dl.1 resisting material and will be heldinthe cup 4 by means of lead or other suitable peeioation of Letters Patent. y Ap'pumion mea october 1a, i911. serial No. 655,597.

and residents of Youngstown', county iPatented'Apnli, 1913.

' material which is poured into "the cup-like member around the stopper 3. Grooves 8` .on the inner face of the cup-shaped member and the outer face of the stopper will be filled with the lead, and the stopper -will thus be held firmly in the cup-shaped member; The latter will necessarily be made of anI ordinary metal, and may be coated withparaiin or like preparation, which will revent any'corroding action by the acid. n like manner that part of the member 5 which enters the valve chamberI proper lwill be coated with paraiiin to prevent the action of the acid.

The stopper of porcelain or glass will, of course, be considerably harder than'the lead of the seat, andthe grinding action ot the stopper in seating will tend to keep tho, seat true, Y thus preventing any leakage flue' to the slight action of the acid on the lead.

The seat will be of a considerable length extending for the whole length of one cf the chambers'of the casing, and the stopper is so mounted in the second of these chambers that it may be reciprocated a vdista .ice equal to the length of this seat, thus permitting of the engagement of the seat by the stopper seat. In this way the valve is adapted to last a long time, since it can close at all 'times until the seat is worn for its whole length. The rinding action of the stopper 4in seating wil 'of course, always keep the closure tight. As the seat wears laway and the stopperfollows downthe seat, it will be evident that the cup-like terminal 4 of ythe reciprocating member will also contact the seat, and that further wear of the seat can only take place if the stopper` and the cn'p.

`at all times irrespective of the wear `on the like `terminal together are adapted to wear away the seat. 'The materia-l of which the cup is constructed is adapted to wear away the seat as well as the stopper 3. .In this way the stopper is adapted to seat the whole lengthjo theseat.'4 l

.The valve casing is formed with an outwardly extending angeell. We use ay companion ange 10l which ext-ends inwardly and is of the same inside diameter as the ioo lead seat. This revents the lead from slipping down and 1s attached tothe iiange 11 by bplts inserted in the apertures 12 in said two flanges ,A

We are aware that various valves have beemconstructed to be used with acids, but

they have generally been made with a lead seat and a lead stopper which will obviously not give the results which are claimed for our construction.

lhe advantage of always having a 'tight closure, obtained by having a very dee seat which is being const-:mtl ground by the action et' the stopper Will e apparent.

Other modes of applying the rinciple of our invention may be employedp instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any ofthe following claims or the equivalent of such stated means be employed.

WV e therefore particularly point out and distinctly claim as our invention l. An acid valve, comprising a seat of soft. arid-resisting material, a reciprocably mounted member adapted to be reciprocated a distance substantially equal to the depth ol said seat, and an acid-resisting stopper harder than said seat, whereby said soft seat is kept true by the grinding action of said harder stopper in seating, said stopper being reciprocated to adapt it to the Wearing away of said seat, thereby utilizing substantially Ithe whole of the same.

L. ln a valve 'easing having a plurality of chambers, the combination of a seat of amd-resisting material extending substanmeme' tiallythe Whole length of one of said chambers; a reciprocabl mounted member adapted to contact saidY seat irrespective of the Wear of the same, whereby said valve may be closed until said seat is substantially destroyed.; and an acid-resisting stopper garder than said seat attached to said mem- In a valve casing having a plurality of chambers, one of said chambers having internal grooves in the walls thereof, the combination ot' a seatof soft acid-resisting material extending the Whole length of said grooved chamber, such material filling said grooves, thereby securely retaining said seat in place, a member reciprocably mounted in another ot said chambers; and a porcelain stopper attached to said member and adapted to contact said seat irrespective of the wear of the same, whereby said valve may be closed until said seat is substantially destroyed.

Signed by us this 16th day of October, 1911.

ROBERT rr. Evans. WALTER e. NcRiu. Attested by- WM. Hier, W. H. WILsON.

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