US1491236A - Valve - Google Patents

Description

April 22 1924.; 1,491,236

A. HOILAND VALVE Filed Dec. 1.!1921 2 Sheets-Sheet 1 A. HOILAND prl 22 1924.

' VALVE Filed Deo. 1 1921 2 Sheets-Sheet 2 Si www .wm ,ww

lette LBERT HOILND, OF FARGG, NORTH DAKOTA;

VALVE.

.application lied December To all whom t may concern:

Pe it known that l, linearer HOLLAND, a citizen of the United. Statesy residing at Fargo7 in the county ot Cass and State of North Dakota., have invented new and use- Ylful improvement in Valves, of which the iollowing is a specification.

My invention relates to valves and has lor its object to provide a valve which is adapted upon opening the same to remain open until the pressure against which each valve operates has been suiiiciently reduced when the said valve automatically closes so that the valve becomes automatically reset.

i-inothcr Yobject of the invention is to provide a valve having` a head adapted after once being opened to be held in open position until said current ceases and to then automatically close and remain closed until again opened.

il still further object is to provide a valve ot the bail type having a seat with inclined surliaces leading to said seat and to provide a member 'for disengaging the ball oi' said valve from its seat and rollingthe same up the inclined surface and so position the said ball that the saine is held at the summit of said inclined surface by the current or fluid passing through the valve7 said ball rolling down the inclined surface to its: seat upon the cutting off of the current oi fluid through the valve.

The Aull objects and advantages oi my invention will appear in connection with the detailed description thereoic and are particularly pointed out in the claims.

ln the drawings, illustrating the application or my invention in one form Fig. 1 is a longitudinal sectional view of my improved valve.

ig. E2 is a plan sectional view taken on line 2 2 of igure 1.

Fig. 3 is a view similar to Figure 2 showing the parte in relatively altered positions.

Fig. el. isa sectional view of the device shown in Figure 1 taken on line 1 4 or that figure, and showing the ball positioned on its seat.y

Fig. 5 is a sectional side view of another form of the invention.`

Fig. 6 is a view similar to Figure 5 showa the parts in altered positions.

lliy invention is adapted for use in connection with any device where it is desired to have the valve remain open until the contents of the receptacle have been drained i, 192i. serial no. sienes.l

and .then to automatically close, and it is particularly adaptable for use in connection with air brakes on railway trains. ln the above use it becomes desirable after the e0 train has been stopped and the brakes set to have a device which when opened remains open until the entire quantity of air in the brake cylinders has been discharged and whicl resets itself and cuts oil' the escape 65 oit the air so that the brake isin condition to be immediately operated after the entire amount oi air is exhausted from the cy1inders thereof.

`ln the form ci the invention shown `in 7c Figures 1 to I1 l have indicated a casing A' yhaving two longitudinal cylindrical sections 10 and 11 connected by a neck 12. At the two ends of the sections 10 and 11 are screwed a pair of bushings 13 and 1d, each 75 of which is provided with a cylindrical bore 15 extending completely through the same. Within the bores or the two bushin s'13 and 141 is slidably mounted a spindleg which is formed with a central head 17 andsha- nks 8o 18 and 19 issuing outwardly 'from the ends of said heads. rihe Shanks 18 and19 are of circular cross section while the head 17 is oi rectangular formation, being of a width less than the sizeof the bushings 13 and 14; 85

seats and 81 formed on the interior of the e0 neck 12 at the lower portion of the opening 82 through which this member 17 extends and on which the said member 1'? rides so that the same is always held in correct position relative to the interior of the mecha c5 nism. Screwable upon each of the bushings 13 and 14 is a lock nut 16 which serves to hold the said bushings in .fixed/relation tok the cylindrical portions 10 and 11 of the casing A. A stuiling box 2() attached to an 100 outwardly extending neck 21 on each oi the bushings 13 and 111 serves to form a tluid tight joint between the Shanks 18 and 19 of spindle B and the interior of the casing A.

At the upper portion of casing A issuing outwardly from the neck 12` is attached a threaded member 22 which may be coupled to the device with which the valve is to be used, by ordinary pipes or fittings in the usual manner. rilhe interior of member 22 110 is drilled to form a nozzle 23 which points directly downwardly and is positioned over the central portion of the head 17 of spindle B. Immediately below the nozzle 23 is formed a valve seat C which consists of a gasket 24 of rubber or other suitable Inaterial which is held in place by a bushing 25 screwable in a depending portion 26 of neck 12. Bushing 25 is formed' with a conical surface 27 which engages a corresponding surface on the neck 12 and is also formed with a conical surface 28 which forms the seat on which a ball 29 comprising the valve proper is adapted to rest. A hole 32 extends completely through the gasket 24 and the bushing 25 so that when ball 29 is unseated from its seat 28 a clear passageway between the interior is effected. Bushing 25 is held in place by means of a lock nut 30 as best shown in Fig. 1.

The device for unseating the ball 29 is formed in the head 17 of spindle B as best shown in Figure 2. This construction consists of a rectangular longitudinal slot 33 which is of a width suflicient to permit the ball 29 to travel freely along the same. This slot terminates at both ends in two shoulders 34 and 35 which are adapted to engage the said ball and force the same off on its seat when spindle B is slided within its bearings in the bushings 13 and 14. Upon the lower interior surface of the neck 12 isformed two inclined surfaces 36 and 37 which the ball 29 is made to climb when the same is unseated. As soon as the said ball is unseated the air or other fluid rushes through the nozzle 23 and through either of two openings 38 and 39 formed at the ends of the slot 33 and through the hole 32 in gasket 24 and bushing 25 and out of the device. The position of the parts at this stage is clearly shown in Figure 2 in which a ball 29 is shown on the summit of the inclined surface 36 and the hole 32 is shown as registering with the opening 38 in head 17 For automatically returning the spindle B back to normal position I provide two coil springs 40 and 41 which are seated against the ends of the bushings 13 and 14 at one end and against washers 42 and 43 positioned adjacent the ends of the head 17. rIhe compression of these springs may be adjusted by screwing in or out the two bushings 13 and 14 and adjusting the lock nut 16 so that when the device is pushed inwardly from either side by means of the shanks 18 and 19 the said device immediately returns to its intermediate position such as is clearly shown in Figure 1. After the ball 29 has been forced back to the summit of either inclined surfaces 36 or 37 the air rushing through the nozzle 23 engages the side of the ball 29 and holds the same backward on account of the current of the same until the supply of air passing through said nozzle ceases. Head 17 having returned to normal position by means of springs 40 or 41 hence does not obstruct the movement of the ball 29 towards the seat C so that when the current of the fluid stops, ball 29 rolls by gravity back on to its seat and thereby effects a closure of the valve. Upon again subjecting the valve to fluid pressure the same is held closed and the ball 29 positioned upon its seat until the same is a second time disengaged by the head 17.

It can readily be understood that the device can be operated from either direction by simply pushing either of the shanks 18 or 19 inwardly the required amount. For adecting this movement I provide couplings 44 which are secured to the ends of Shanks 18 and which are attached to operating links 45 by means of which the said shanks may be manipulated. When it is required at any time to close the valve before the complete amount of fluid has been exhausted and the current passing through the said valve checked, the same may be accomplished by manipulating the spindle B in the opposite direction from that required in unseating the valve. In such a case the shoulders 35 and 34 engage the ball and force the same down hill until the ball becomes positioned over the seat C. As soon as this occurs air pressure forces ball against the seat and a direct closure is affected.

rThe device shown in Figures 5 and 6 is similar to that indicated in Figures 1 to 4 differing principally in that the releasing mechanism is operable through the exhaust port thereby eliminating the necessity of a stuffing box in connection with this device. In this form a casing D is provided which is formed with an interior globular chamber 50 which terminates at one end in a threaded member 51 similar to member 22 of the other form of the invention. A gasket 52 and a bushing 53 similar toy gasket 24 and bushing 25 form a valve seat l5 on which a ball 54 positioned within chamber 50 is adapted to seat. The threaded member 5l communicates through a horizontally positioned nozzle 55 with the inte-rior of chamber 50. The nozzle 55 is drilled from the exterior of the device through an opening 56 which is normally closed by a cap screw 57 as clearly shown in Figure 6. A. hole 58 passes directly through gasket 52 and 53 and brings the interior of chamber 50 in communication with the exterior. When ball 54 is seated upon the seat E the pressure within the chamber 50 is the same on all sides and no force exists which would cause the said ball to become unseated. On the contrary, the pressure in the vicinity of hole 58 being less than that within 'the chamber 50 the said ball is firmly seated and an effective closure of the valve produced. lVhen, how- Menace ever, the ball 5d is unseated by means to be presently described, the air rushes through the nozzle 55 and directly engages the side of the ball, throwing the ball back into the interior of chamber 50 as far as the same is permitted to travel, said air escaping through the opening r58 to the exterior.

The device for unseating ball 54; com'- prises a slender pin 59 formed on the central portion of an arm 60 which is pivoted at 63 to a depending support 6l secured to casing D. This pin passes freely and loosely for a distance into the interior of the ball 5d througa a hole 62 drilled partly through the same. The position ci' the pivot 63 is such that when the said arm is oscillated in one direction pin 59 is swung to the leiit and the ball 54 forced to travel up an inclined surface 6d to effect an opening of the valve. ln this position the rush ci air through noz- Zle 55 against the ball 5d holds the same in the said position as long as the current of air passes through the valve. As soon as the current of air ceases the weight of ball 5a causes the ball to drop back again on its seat proper and to eii'ect the necessary closure.

For operating pin 59 I provide a horizontallypositioned lever 65 which is pivoted at 66 to a depending lug 67 formed on the support 6l.v This arm is formed with two iingers 68 and 69 which when the said arm is oscillated are adapted to engage 'the protruding ends '70 and 7l of arm 60 and to oscillate the said arm and so alter the movements of the ball 54. Arm 65 is formed with two upstanding portions @and 73 to which necessary operating links lll may be connected. When it is desired to close the valve before the fluid current passing through the same has been cut oil the lever 65 may be operated so that ngers G8 engage portion 7l or" lever `6() and draws the ball backward. When the ball taires its position over the seat E the pressure in the chamber 50 becomes equalized on all sides causing the said ball to become seated and the valve to become closed.

The advantages of my invention are manii'est. At the present time on railway trains considerable time is lost while the air brakes are released, in holding the release valve open until the air is discharged from the brake cylinders. This takes all the way from one to four minutes for each car which on a train having a number oi cars consumes a considerable amount of time and necessitates unnecessary halting of the train. lilith my improved invention the valve is simply opened by the operator who then passes on to the next valve. After the air has been completely exhausted the valve automatically closes and the same is seated and in its closed position so that the brakes may be used at any time subsequent thereto.

Tn accordance with the patent statutes T have described the principles of operation of my invention together with the apparatus which .l now consider to represent the best embodiment thereof', but T desire to have it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to vuses other than those above set forth within the scope of the following claims.

l. A valve comprising a seat, a runway leading up to said seat and a valve member movable along said runway and adapted to become seated upon said seat and inlet and outlet passageways for directing the iluid against said valve when the same has been openedy to hold the valve upon said runway away from said seat.

A valve comprising a valve chamber, a valve seat, an outlet passageway connected with said valve seat, an inlet passageway positioned in alignment with said outlet passageway and a valve member adapted to become seated upon said seat and to be held so seated by the duid pressure within said valve, said valve member being adapted to hold away troni said seat by the inrush ilow of iiuid into the valve chamber after the valve has been opened.

3. Avalve comprising a valve chamber, a vertical outlet passageway formed in said valve leading into said valve chamber, a seat formed in the upper portion of said passageway, a valve closure member adapted to be seated upon said seat, means for unseat-ing said valve and an inlet passageway adapted to direct the inilowing current of iluid against said valve member to hold the said member away from said seat once the valve has been opened.

d. A valve comprising a casing, a seat within said casing, a valve member adapted to become seated upon said seat, a head positioned within said casing for unseating said valve having an opening, said valve being positioned within said opening and means for leading the valve away from said opening in either direction oi movement of said head.

5. A valve comprising a casing, a seat within said casing, a valve member adapted to become seated upon said seat, a head positioned within said casing for unseating said valve havin@F an opening, said valve being positioned within said opening and means for leading the valve away from said opening in either direction of movement of said head, and notches in said head adjacent points of engagement of said head with said valve member for permitting the dow of duid around said valve member on all sides thereof.

6. A valve comprising a seat, a ball closure member, means for unseating said ball closure member, means for directing the fluid current through said valve to hold said ball member unseated, and means for causing said ball member to travel back towards its seat when the iiuid current has been checked.

7. A valve comprising a seat, a ball closure member, means for unseating said ball closure member, means 'for directing the iuid current through said valve to hold said ball member unseated, and an inclined run- Way for causing said ball member to travel back towards its seat when the fluid current has been checked.

8. A valve comprising a seat, an inclined run-Way leading to said seat, a ball closure member adapted to travel along said run- Way, a slotted member adapted to surround said ball and to engage the same 'for unseating the ball, and means 'for directing the iuid current against the ball to hold the same at the summit or" said run-Way While the fluid is passing through the valve.

9. A valve comprising a neck, a pair of cylindrical members attached to said neck, a slidable spindle having shanks passing through said cylindrical portions, a head formed on said slidable member and positioned in said neck, a slotformed in said head portion, a seat formed in the bottom of said neck below said slot having an opening passing through the same, inclined run-Ways formed along said slot in said neck leading to said seat, a ball adapted to travel along said run-Ways and to be engaged by said slidable member, and a nozzle positioned over said slidable member adapted to discharge a fluid through said slot to hold the ball unseated While the said iiuid is passing through the valve.

10. A. valve comprising a neck, a pair of cylindrical members attached to said neck, a slidable spindle having Shanks passing through said cylindrical portions, a head formed on said slidable member and positioned in said neck, a slot formed in said head portion, a seat formed in the bottom of said neck belon7 said slot having an opening passing through the same, inclined. run- Ways formed along said slot in said neck leading to said seat, a ball adapted to travel along said run-Ways and to be engaged. by said slidable member and a` nozzle positioned over said slidable member adapted to discharge a fluid through said slot to hold the the ball unseated While the said 'fluid is passing through the valve, and auxiliary notched openings formed in the ends of said slot adapted to register With said seat openings when said slidable member has disengaged the ball *from the seat to :torni a passage- Way from the nozzle through the said opening.

ll. A valve comprising a seat, a pair of inclined runways leading to said seat, a closure member movable along said run-Ways and means for unseating said valve and for moving the same in either direction along either of said run-Ways to the summit thereor' or back again to said seat.

12. A valve comprising a valve seat, a closure member for said valve seat, a movable member adapted to move in several direc tions and means operated by said movable member for unseating said valve in any o the movements of said member.

13. A valve comprising a valve seat, a closure member for said valve seat, a movable member adapted to move in a right or left hand direction and means operated by said movable member Jfor unseating said valve When said movable member is moved in either direction.

ln testimony whereof I aix my signature.

ALBERT HOILAND.

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