US1621638A - Tank valve - Google Patents

Description

March 22, 1927. 1,621,638

- R. A. M lNTYRE ET AL TANK VALVE Filed April 9. 1925 WITNESSES lN\/ZE .NTOR4S4 Y M 111%; e ZZfZ Z W 4 ATTORNEYS Patented 22, 192%. UNITED STATES v 1,621,638 PATENT OFFICE.

ROYAL A. MQIN'IYRE AND ALBERT D. HASTINGS, OF WEST TULSA, OKLAHOMA.

TANK

VALVE.

Appliez-ition filed April 9, 1925. Serial No. 21,936. a

claimed.

wiper ring for performing a scraping ac- An object of the invention is to provide a valve for the purpose described, in which it is an important consideration to make certam engaging parts of non-corrosive metal, and to employ 1n combination therewith a tion in advance of the seating of the valve so that a perfect joint may be insured.

Other objects and advantages appear in the following specification, reference being had to the accompanying drawing, in which- 1 Figure 1 is a longitudinal section of the improved val e, the closed position being illustrated. a I

Figure'2is a combined elevation and see tional view of the valve, being shown in the open position. 4

Figure 3 is a perspective view of the movable valve head.

Figure 4 is a perspective view of the stationary barrel in which the valve head works.

.As already briefly stated, the improved outlet valve 1s intended primarily for use in connection with tank car's, although its use is not thus confined. The barrell is threaded at 2 to permit screwing into a portion of a spring-type valve which is ordinarily standard .equlpment on tank cars. A portionlo'f the valve into which the barrel is screwed is. shown at 3, details of the valve being omitted because they had no bearing on the invention. A portionof the car is shown at 4. In practice it is optional whether the barrel 1 were screwed in place or provided with a flange that could be welded or otherwise fastened in place.

A circumferential flange 5 provides an abutment for the barrel-against the part to which it is secured. A plurality of openings 6 have sharply diverging lower end walls 7. The lower ends of said walls are in the bot tom wall of said circumferential flange, the u per ends of the walls producing sharp e ges 8 which are intended to keep substances from accumulating on the valve.

A stationary valve seat 9 is inserted in an appropriate recess 10 formed by a reduction in the bore of the barrel 1. This valve seat may be made ofany appropriate metal, but preferably such as is known as Monel metal WYhlCh has the property of being noncorrosave. The valve seat is bevele'dat 11, the

sharp upper edge merging with the interior upper wall of the barrel and forming part of the sharp edges 8 at theopenings 6.

Movable within the barrel 1 is a valve head 12. This valve head is hollow in order to lighten the weight and reduce the amount of materials required in its construction. It has a pair of ears 13 to which a link or rod 14 is suitably-attached 'in order to' provide for raising and lowering of the valve head. A pin 15 prevents pulling thevalve head out of the barrel should a particularlystrong pull be exerted upon the link 14. The upper edge of the valve head is circumferentially grooved at 16 and it is 'this groove that the ,pin engages.

The valve head 12 carries a member 17 which coacts with the stationary valveseat 9. This member is seated in a recess 18 in the lowerend of the valve head. It is also preferably made of Monel metal, although other non-corrosive metals may obviously be employed. ;The cooperating valve member 17 is beveled to match the bevel 11 of the seat 9 and when the two parts engage as in Figure 1a perfectly tight joint as in Fig- I ure 1 results.

A resilient ring 19 causes a scraping acraised and lowered to respectively open and close'the valve. l/Vhen lowered, the expanded ring 19 (Fig. 2) will ride upon the bevel 11 of the seat 9 and become contracted until it assumes the position in Figure 1. The contracting action of the ring 19 produces a scraping action upon the bevel 11. Any ac cumulation that may" have gathered upon the stationary valve seat is therefore loosened and will be carried outxwhen the valve head 12is again raised. 0

The engagement of valve member 17 with the bevel 11' of the stationary seat 9 will alone produce a tight joint, but when the 'expansible ring 19 is combined therew th the resultingjoint becomes such as Wlll 111- sure against any possibility of leakage. It

is to be borne in mind that thejoint is produced by a combination of surfaces upon which downward and lateral pressures are exerted. First occurs in the instance of the engagement of the member 17 with the bevel 11 of the seat 9, while the second occurs in the instance of the laterally expanding ring 19 against the internal wall of the seat.

A further feature of importance resides 'in the provision of a groove 21 at the head of the recess 18 and immediately above the valve member 17. This groove exposes the peripheral edge of the member 17 and makes room for the admission of fluid from the tank car. This fluid obviously produces a downward pressure which, when exerted upon the exposed edge of the member 17, tends to exert pressure upon the member 17 in addition to that imposed by the weight of the head 12 and its actuating members.

While the construction and arrangement of the improved tank valve is that of a generally preferred form, obviously modifications and changes may be made without departing from the spirit of the invention or the scope of the'claims.

\Ve claim 1. A valve comprising a barrel having a beveled valve seat, a relatively movable valve head, and annular resilient means car- 'ried by the head which is contractible as it moves over the beveled seat when the valve head as be ng moved to a closing, position to I scrape any obstructions fromthe seat.

2. A valve .comprising a barrel havin a beveled valve seat, a relatively mova le valve head, a member carried by the head to cooperate with the seat and being corre: spondingly beveled to produce a tight joint when the valve is closed, and annular resilient means carried by said member being contractlble as it moves over the beveled seat to scrape the surface in advance of the engagement of said member. a

b. A valve comprising a barrel having a beveled seat, a relatively movable valve head, a member carried by theheadbeing beveled to correspond and coact with the beveled seat to make a tight joint when the valve is closed, and a split ring carried by said member-being compressible upon movbeveled and having the upper end coinciding with and assisting in the formation of said sharp edges, the beveled portions preventing substances lodging in the openings, a valve head which is relatively movable inside of the barrel, a recess in said head having an adjoining circumferential groove, and a circumferential member seated in said recess being beveled to correspond with the bev eled seat and having a portion protruding circumferentially in' said groove to receive the thrust of fluid pressure entering at said openings to force said member upon said seat;

6. A valve comprising a barrel having a recess, a seat of material dissimilar to the barrel occupying the recess and being beveled, a valve head relatively movable inside of the barrel having a recess, a member of material dissimilar to the valve head occupying said recess and being beveled to 00 V H .match the bevel of the seat, and an ez'ipansible and contractible ring carried by said member being of material similar to that of the member.

7. A valve comprising a' barrel having a plurality of openings and a circumferential flange'providing beveled walls for the bottom of the openings and producing sharp edges at the interior of the barrel, the bore of the barrel being reduced to form a recess 10o therein, a seat in said recess being beveled and meeting said sharp edges, a valve head fitting the barrel having a recess at the lower end and an adjacent circumferential groove, a grooved member occupying the 195 recess and be ng beveled to correspond with the valve seat, a circumferential portion of said member protruding at'the circumferential groove permitting the fluid pressure through said openings to assist seating the in the barrel, and a contractible and expansible ring in the groove of said member scraping. over thebeveled valve seat as the head 1s moved to msure a clean surface for said member and then engaging the valve seat to complete the joint.

- ROYAL A. McINTYRn.

ALBERT n. HASTINGS.

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