US1529063A - Drain cock - Google Patents

Description

March 10. 1925.

DRAIN cock Filed May 20, 1920 Patented Mar. 10, 1925,

UNITED STATES PATENT OFFICE.

ELDON Pr GUNIDRY AND CLIFFORD A. BOOM, OF FLINT, IIIICHIGAN, ASSIGNORS TO GENERAL MOTORS CORPORATION, OF DETROIT, MICHIGAN, A. CORPORATION OF DELAWARE.

DRAIN COCK.

To all whom it may concern:

Be it known that we, ELDoN P. GUNDRY and CLIFFORD A. BOOM, both citizens of the United States. and residents of Flint, county of Genesee, and State of Michigan, have invented certain new and useful Improvements in Drain Cocks, of which the following is a full, clear, concise, and exact description, such as will enable others skilled in the art to which the invention relates to make and use the same, reference being made therein to the accompanying drawings, which form a part of this specification.

Our invention relates to drain cocks particularly applicable for use in draining the oil from the crank case or the cooling liquid from the radiator of a self propelled vehicle,-

although the same is capable of use in other relations and in fact in any mechanism or device wherein a drain cock has to be used.

The principal object of our invention is to provide an improved drain cock which will be simple in construction and effective for the purpose for which it is designed, while at the same time it will be more compact than drain cocks as heretofore usually constructed have been and will take up less room in the rather crowded space in which such drain cocks are located than has commonly been the case in drain cocks of the type and construction heretofore in common use.

A further object of our invention is to provide an improved drain cock in which the liquid flowing from the receptacle to be drained is discharged through an opening provided in one end of the rotating valve thereof, as distinguished from through the valve and then through a passage provided in the shell or casing ofthe device, as has heretofore commonly been the case.

With the above and other objects of invention in view our invention consists in the improved drain cock illustrated in the accompanying drawings and hereinafter described and claimed; and in such variations and modifications thereof as will be obvious to those skilled in the art, so long as such Figure l is a view showing our improved drain cock in section, the valve thereof being closed.

Figure 2 is a similar view showing the valve in its open osition.

Our improved drain cock comprises a main body portion, shell or casing 8 adapted to be secured to a receptacle to be drained as by riveting or soldering the same thereto, to.

which end said casing is provided with a seat shown as made up of portions 9, 1O arranged substantially at right angles to one another, and which seat portions fit against the lower corner of the chamber to be drained and are soldered or otherwise secured thereto to thereby fasten the drain cock to the chamber to be drained, It will be appreciated, however, that the drain cock may be otherwise secured to the receptacle or chamber as the invention, regarded in its broader aspects, is not concerned with the particular manner in which the drain cock is secured to the receptacle to be drained. U

Located within the shell or casing 8 is a vertically disposed valve seat circular in cross-section, and preferably slightly conical in form, with which seat a portvll communicates and which port is in open communication with the interior of the receptacle or chamber to be drained through an opening 12 provided in the wall 4 of said chamber. a

The valve of our improved drain cock is designated by the reference numeral 13, the same being conical in form to fitwithin the conical seat of the body or casing above referred to and the stem 14 thereof extending upward and being provided with a bar 15 or equivalent operating means whereby the valve may be conveniently rotated to open and close the same. The valve in'question is held in contact with its seat by means of] a spring 16 which surrounds the stem 14 and acts between two washers 17, 17 the lower" one resting upon the upper end of the shell or casing 8 and the upper one resting against the cross-bar 15. The spring therefore acts between the abutments provided by r the washers 17, 17 to force the valve 'upward and maintain it in close contact with its seat and thereby maintain the tightness of the valve throughout the life thereof, thus providing automatic compensation for such wear as may occur when the valve is in use.

The valve 13 is provided with a port 18 adapted to communicate with the port 11 in the manner shown in Figure 2 when theliquid is to be drained, and to be out of com- In view of the premises it will be appreci- ,ated. that our. improved drain cock can be readily secured to the vertical side wall or a receptacle to be drained such, for example,

as the crank case otvan engine or the lower water chamber of a radiator, and that the liquid will' be discharged in a downward direction as is desirable in such devices,

without, however, providing the shell'or casmg of the cock w th a dowmvardly bent spoutorbibb ashas hereto'fore usually been the case; the downward direction of the outflowing. stream being produced by discharging the same vthrough a vertically disposed passage provided in the rotating valve of the cock. This construction provides a drain cock which is materially more com pact than has heretofore con'nnonly been the case, for the reason that no projection is present upon the shell or casing of the cook; which t'eature ot compactness is a matter of importance in power plants of motor driven vehicles as there is often very'little room Within which to install and provide for the operation or the drain cock as portions. of the engine orotherinechanism of the said plant are Often located in vasclose proximity as possible.

increased wit The fact that the port 18 throughwhich liquid fiowsdoes not extend through the valve providesa construction in which a much larger port area may be secured'than would be the case it the same extended entirely through the valve and communicated ,wlthan outlet passage located opposite the port 11, and the downwardly discharging passage-forthe liquid present within the valve provides a drain cock in which the "valve thereof maybe rotated throughout 180 degrees to open the same; thus providinga drain cock in which the ln'terior surface of the casing over whichthe port 18 is moved when the valve is closed, see Figure 1, 1S

located opposite the inlet port 11, whereby "the flowof liquid is effectively prevented even though the port 18 is of large area.

Incidentally, theprovision of a drain cool: having structural features such that the area of the outlet 1passage therethrough may be iout danger of leakage pro vides a device in which the velocity of flow of liquid out from the chamber being drained will be increased, and a rapid draining or the liquid secured, which is obviously a teatureot advantage. I

Having thus described and explained our invention,'we claim and desire to secure by Letters Patent:

1. A drain cock comprising a body portion having vertically disposed valve seat conical in form and smallest in diameter at its upper end, fitttt'filllnglhtllls whereb -said body portion may be secured to a chamber to be drained, and a port through which communication is established between' said chamber and said valve seat; a conical valve rotatable within thesaid valve seat and having aport adapted to communicate with said first mentioned port and a vertically arranged outlet passage leading downward "from said port and discharging through the lower end of said valve; a stemextending upward from said valve; a spring surrounding said valve stem; a washer interposed between the lower end of said spring and the upper end of said body portion; a second wash-er surrounding said valve stem and against which the upper end of said spring abuts; and an operating handle locatcdadjacent the upper end of said valve stem and against which said second mentioned washer abuts.

2. ii drain cock comprising body portion having a vertically disposed valve seat conical in form and smallest in diameter at its upper end, an attaching-seat having substantially horizontal and vertical portions adapted to abut against corresponding walls of areceptacle and a port connecting said two seats; a conrcal'valve rotatable within "the said valve seat and having a port adapted to communicate with the said'lirst mentioned port, and a vertically arranged outlet passage leading downward from said valve port and discharging through the lower end of said valve; a stem extending upward from said valve; a spring surrounding said valve stem; a washer intesposed'between the lower end of said spring and the upper end of said body portion a second washer surrounding said valve stem and against which the upper end o t said spring abuts; and an operating handle 10- cateda'djacent the upper end of said valve stem and against which said second mentioned washer abuts.

In testimony whereof we atlia our signatures. I

' ELDjON GUNDRY.

omrronn BOOM;

Images