US1556270A - Outlet valve for tank cars - Google Patents

Description

' H. P. WELLE OUTLET VALVE FOR TANK CARS Filed May 21. 1920 ssskiizsfi I 0 142 2 I v/ 3 v Z A TTORNEYS.

Patented Get. 5, 1 925 UNITED Es ."HAL r. wELLnorKANsAs orrmemrssounr, ASSIGNOR or one-THI D To I I SWEARINGEN, .OFKANSAS CITY, MISSOURI.

,oU'rLErvALvE-FoR TANK, cARs.

Application filed May 21, i920. Serial No. 3s3,i4 9.f

To all whom it may concern:

-Be it known that I, HAL P. WELL'n, a citizen of the United States, residing at 'Kansas City, in the county of Jackson and State of Missouri, have invented certain Y new i and useful Improvements in Outlet Valves for Tank Cars, of which the following isa full, clear, and exact description, such as vwillenable others skilled in the art to which it appertains 'to make and'use the same. i

The invention relatesto outlet valves for railway tank cars and has provided an improved outlet valve for unloading tank cars of oil and the like.

The present invention has provided an improved outlet valve for railway tank cars that will remain seated, the vibration of the car cannot affect it, foreign matter will not interfere with its closing, it does not require regrinding, and it does not extend into the outlet nozzle, so that wreckage of the car will not unseat the valve or cause it to leak.

With these and other objects in view the invention consists in the features of construction, combination and arrangement of parts hereinafter set forth and more particularly pointed out in the appended claim, the accompanying drawings illustrating a form of the improved valve mounted on a fragmentary view of a railway tank car.

In the drawings Fig. 1 is a fragmentary broken view of the tank of a railway tank car with the improved outlet valve mounted in operatable position.

Fig. 2 is a vertical sectional view of the improved outlet valve taken on line 22 of Fig. 3.

Fig. 3 is a horizontal sectional view taken on line 3-3 of Fig. 2. r

Fig. 4 is the same view as Fig. 2, but with the movable portion of the valve shown in full view and in open position.

The tank shell 1, dome 2, and outlet nozzle 3 represent a fragmentary view of the tank of an ordinary tank car of common and well known construction.

The valve casing 4 is cylindrical in form and provided with the annular flange 5 which lies between the outlet nozzle 3 and the shell 1, the rivets 6 securing the outlet nozzle and valve casing securely to the shell so that no leakage can occur by the applicatlon.

The gasket 4 forms a tight joint between' the shell 1 and the annular'flange 5.of the casing 4 and eliminates caulking of the joint The valve casing 4 is provided with the non-corrodible bushing 7 andthe annular ports 8 which communicate through thefshell and the bushing to the outletnozzle when the valve is openas; in Fig.4. I i Theannular internal flange 9 is provide-cl in the casing andbevelled as shown forming the seat 10, while the upwardly extending end of the casing is provided with the thread 11 by which the head 12 is attached thereto, the set screw 13 looking the head so that it cannot become disengaged from the casing.

The head 12 is provided with the thread 14 in which is fitted the operating screw 15, the screw being connected by the rod 16 to the hand operating handle 17 within the dome 2 and the rod 16 being guided and held in position .by the bracket 18 which is secured to the dome at 19, the rod being revolvable in the bracket.

The lower end of the screw 15 is provided with the annular flange 20 socketed in the recess 21 of the working valve 22 and held in revolvable position therein by the recessed flange 23 and the bolts 24.

The working valve 24 is a smooth working fit in the valve casing 4- and is provided with the ordinary packing ring 25 and the seat 26 which seats upon the seat 10 of valve casing, the working valve being shown closed in Fig. 2 and open in Fig. 4..

The holes 27 are provided in the head 12 so that as the working valve 22 is closed oil may follow the valve and not resist its closing and so that the oil may be expelled as the valve is opened and not resist or prevent the opening of the valve; theseholes also provide for the expansion of liquids in the casing in the event of freezing.

It is obvious that when the working valve 22 is opened as shown in Fig. 4 there is a free passage for the oil to escape from the tank of the tank car through the ports 8 and the outlet nozzle 3, and the valve being a close working fit in the casing will force any foreign matter in the casing downwardly into the outlet nozzle, the packing ring being sufficient to prevent leakage while the seats 10 and 26 form a stop for the valve so that it is known when it is closed, the seats also forming an extra safeguard against leakage.

The valve does not require regrinding as it will not leak if the seat 26 does not fit the seat 10 perfectly.

No part of the valve extends into the outlet nozzle so that wreckage of the car and breakage of the outlet nozzle cannot cause the valve to leak and lose the contents of the, tank.

VVhat I claim as new and desire to secure by Letters Patent, is

In anoutlet valve for railway tank cars, a railway car tank, a hole in the bottom of said tank, a cylindrical casing extending through said hole into said tank, an annular flange'integral with said casing and bearing upwardly against said tank, an outlet nozzle with an annular flange onthe upper end thereof and bearing against the flange on said casing, rivets securing said flanges to said tank, an internal annular flange integral with said casing and approximately even with the bottom thereof and provided with an inverted frustrum shaped valve seat, ports extending through said casing laterally at some distance above said valve seat, a non-revolving trunk piston shaped valve in said casing with the open end downwardly disposed and provided with a companion inverted frustruin shaped valve seat, said valve closing said ports and resting on said frustruni shaped seats when closed and a screw threaded revolvable valve stem arranged to raise and lower said valve and to force said frustruin shaped seats in closed contact, so that in closing said valve said ports are first closed by the body of said valve and then said frustrum shaped seats are seated and in opening said valve said frustruni shaped seats are first sepa rated and then said ports are opened.

HAL P. WVELLE.

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