US1692117A

US1692117A - Safety outlet valve for tank cars

Info

Publication number: US1692117A
Application number: US214567A
Authority: US
Inventors: Frederic A Gurney
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-08-22
Filing date: 1927-08-22
Publication date: 1928-11-20
Anticipated expiration: 1945-11-20

Description

g f 2 G m .7. A w WM T 4 E m I. I.IV/ 7 SAFETY OUTLET VALVE FOR TANK CARS V11 l gli Nov 20, 1928 Patented Nov. 20, 1928.

U N I T ED l ST AlT ESl PATEN OF @F1 ,CE1

FREDERIC A. GURNEY, 0F WORCESTER', 'MASSACHUSETTS SAFETY OUTLET VALVEV FOR 'TANK CARS.

Appli'zationv led August- 22, -1927"S.erial.v No'. 214.567.

as a means for controlling-the outlet and will not get displaced or opened during the travel of the' car on theV road; to provide the valve in such position that there Will be l]ust as much clearance as has `been 'the .caserheretofora and to insure the valve. againstaccidentalr opening in transit.

Other objects andadvantages ofthe invention will appear hereinafter. Y

Reference is to be had to the accompany` ing drawings in which i Fig. 1 is a central sectional viewy of an outlet valve casing for a tank cary With a preferred embodiment of ,this vinvention applied thereto; and

Fig; 2 is a central sectionalvieiv on'the line 2-2 of Fig. 1.

It hasbeen customary heretofore to provide tank cars with an outletlvalve casing 10 extendingdown. materially 'from the bottom of the car to which it is secured and to provide the bottomof the casing With a cap screwed on the threads 11 thereof. At the top this casing has been usually provided With an inside valve (not shown) which is supposed to control the discharge of oil but Which becomes displaced owing to the vibrations in transit and allows the oil to leak out. The cap at the bottom Which has 'usually been used is intended to prevent loss of oil along the road, but leakage occurs and furthermore, when this cap is removed to empty the car, the oil in the casing is lost Which, in the aggregate, is an important loss. The object-s of this invention have been stated above and more specifically they relate to the provision of a substitute cap having means for preventing the discharge of the Whole casing full of oil when the plug in the bottom is removed and that Without any increase in the g depth of the cap and therefore providing t-he usual clearance.

For this purpose I place on the thread 1 1 a cap 12 Which is provided with an outlet plug 13 at the bottom as usual. `This cap is provided ivith a passage therethrough into which lit two side plugs 14 and 15. The plug 15 is provided with a squared end 16 by which the plug can be removed. The plug 14, although removable, is not ordinarily removed in the course of its life. It is provided With arecess 17 for receiving-a spring 18 bearing on a head 19 located inthe end of a conical valve- 20. This conical valve is located in a coniH lcal seat which is a part ofl the passage` through the cap12 mentioned above It has one or more yports 21 through it kwhich canibe turned to horizontaler vertical position as usualffor shutting off the oil or `allowing it to pass through. It has a square head Q2 located in'a recess in the plug 15 bywhich the valve canbe turned. V

In order to open or close the valve the plug 15 has to beremoved and the valve .turned by this squarehead 22, which is ladapted to re-LV ceivea Wrench for that purpose. ItWill be seen that the spring 18 constantly forcesthc conicalvalve to its seat so that the yibrations of travel will notvallowoilto leak by atthis point, although the inside` valve at the ,top

mayv be leaking. l Furthermore, 'there .is a

cavity 24 inthe cap 12, through which this valve 2OA passes. This is ,ra comparatively small cavity and, if .the valve does leak, the, only oil that Willbelostfwhen the plug 13 is f removed, is that contained in the cavity 24 below the valve. This is a very much smaller loss than that of the Whole casing 10 full of oil as often has been the case heretofore.

This device therefore is acceptacle to the trade because it does not do away with any of the safety features now employed and there is no less clearance under it than is the case with the usual cap. Furthermore, the valve 20 is kept to its seat so that there is no leakage in ordinary circumstances and, even if there is, there cannot be much. waste from it asv has been shown above. It does not involve the changing or displacement of the usual outlet valve casing 10 and therefore does not involve an increase in the expenditure for t-he principal part of the device as it is manufactured. It is a practical and simple device, saving large quantities of oil in the aggreate.

Although rI have illustrated and described only a single form of the invention, I am 'aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. There fore, I do not Wish to be limited to all the details of construction herein shown and described, but What I do claim is 1. The combination with an outlet valve casing for a tank car, of a cap secured to the bottom of ,said casing and having an outlet lu@ said ca) havinO` a transverse conical b3 b I assaffe therethrou `h closel ad acent said C c l lue a conica-l valve located in said assaOe a plug screwing into the side of the cap and c the bottom of the car, or' a cap secured on the bottom of said casino' and havine a valve located transversely oi' said cap lor normally preventing the leakage of the oil through said casing, an outlet plug in the bottomoit said casing and projecting therewithin to a point closely adjacent said valve, said valve having a non-circular end, and a plug removably mounted in the side or the cap and adapted to be unscrewed to expose the non-circular end for turning the valve.

3. Tlie'combination with an outlet valve casing tor a tank car, of a cap screwed to the bottomof said casingan'd having an outlet plug at the bottom, said cap having a conical passage therein closely adjacent said plug, ot' a conical valve located in said passage horizontally, a plug screwing into the'side or the cap and having a recess, a springprojecting into said recess and engaging the large end of the conical valve for holding the'valve against its seat, said valve having a non-circular smaller end, and a plug removably mountlow said valve.

ed in the side of the casing and adapted to he unscrewed to expose the non-circular end.

In a valve, the combination with an open `endedA casing having a. transverse conical pas sage therein, of a conical valve located in said passage, a plug -screwing Vinto the side of the casing and having a recess, a spring projecting into said recess and engaging the large end of the conical valve :tor holding the valve against its seat, said valve having a non-circular smaller end, anda plug removably mounted in the side or the casing and adapted to he iinscrewed to expose the non-circular end, and means to ill the portion or the casing'belowv said valve.

5. The combination with an outlet valve casing for a tank car, oiI a cap screwed to the bottom ot' `said casing, said cap having a transverse conical passage therein, of a conical valve located in lsaid passage, a plugscrewing'into the side of the cap and having a recess, a spring projecting into said recess and engaging the large end of the conical valve for holding said valve againstits seat, said valve having a non-circular smaller end, and a plug removably nioiintedin the side of the casing and adapted to be unscrewedto expose the lion-circular end, and means to block substantially all ofthe portion of the casing ben testimony whereof l have hereunto afhxed my signature.

FREDERIC ii. siiaiiniiv