US583807A

US583807A - Gage-cock

Info

Publication number: US583807A
Authority: US
Publication date: 1897-06-01
Anticipated expiration: 1914-06-01

Description

ILE. KER'NS.

GAGE 000K. V

Patented June 1, 1897.`

. I. .OO

(No Model) I M W x I o www Nrrno STATES ELMER E. KERNS, OF BRADFORD, PENNSYLVANIA.

GAGE-COCK.

SPECIFICATION forming part of Letters Patent No. 583,8`O7, dated June 1, 1897.

Application iiled June 24, 1896.

To all whom, t may concern:

Be it known that I, ELMER E. KERNS, of Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Gage Cocks or Valves; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this speciiication.

This invention pertains to automatic gagecocks or globe-valves; and the object thereof is to provide a cock or valve which will automatically close if the projecting part of the valve casing or stem be broken and which may be so adjusted as to automatically close and thus permit of the taking apart of the protruding portion of the casing as well as the removal of the valve-operating stem.

IVith these objects in view the invention consists in the novel features of construction hereinafter fully described and claimed, 'and illustrated by the accompanying drawings, in which- Figure l is a longitudinal sectional view of the gage cock or valve when applied to a steam-boiler, the same being closed through the operation of the steam or other pressure. Fig. 2 is a similarview of a portion of the device showing the adjustment of the parts when the gage cock or valve is open to the exhaust. Fig. 3 is a similar View showing the valve-stem wide open and the check of the valve automatically closed by steam or other pressure.

When used as a gage-cock, the boiler-wall A is tapped by the externally-screw-threaded bushing B, having the ground seat B at its inner end and formed with the internallyscrew-threaded collar or neck C at its outer end, said neck being of greater diameter than the bushing proper in order to form a seat or shoulder C for the purpose presently to be stated. The body D of the valve or cock is of globe form and provided with the removable discharge-nib D. The lower reduced end E of the body is screw-threaded to conneet with collar C. Tube F has the circumferential flange F' at its lower end, whereby it is clamped on the seat or shoulder C by Serial No. 596,796. (No model.)l

the. valve-body and projects upward into the interior of the latter, and is reduced in diameter at its upper end, as clearly shown.

Stem G, operated by hand-wheel G', extends downward through the upper portion I-I of the cock or valve casing, the stem being screw-threaded at its lower end to take the internal screw-threads of portion H, and at its lower end is recessed upward to receive shank I of the valve I. The latter is adapted to seat squarely upon and close the upper end of tube F when the valve-stem is run inward, as shown in Fig. 1. In this position the escape of steam from the boiler is entirely shut off.

In order to automatically close the cock or valve so that the stem, and in fact all of that portion thereof projecting from the boiler, may be removed for repairs or for cleaning, I provide the elongated check-valve J, which works within the inner part'of bushing B, head J thereof being adapted to close against seat B of the bushing, as in Fig. 2, and thus entirely close the valve or cock and prevent the escape or discharge of steam.

In order to adjust the check by the valvestem, pin K is extended outward from the check-valve and through tube F, so as to be, engaged by the central metallic pin K of valve I. By this arrangement the stem may be run outward, as in Fig. 3, when valve I will be raised from the end of tube F, and at the same time check J will move toward a closed position, but the movement of the stem will not be sufiicient to permit it to entirely close, and hence the steam may escape into body D and outward through nibs D', and thus indicate the condition of the steam in the boiler. IVhen it is desired to close the cock or valve by means of the check, the valve-stem is run outward to the position indicated in Fig. 2, when the said check will be afforded sufficient movement to close against seat B. This movement of the check may be accomplished either by the steampressure within the boiler or by any preferred arrangement of spring (not shown) for accomplishing the purpose. Spring-arm L, secured to casing portion I-I and having the angular portion L' to engage groove GIl of stem G, serves to indicate that when the arm L drops into the groove Gl the valve is wide open. Any further outward movement of the stem IOO G (when arm Gis raised out of the said groove 1r) will show the operator that he is closing the check J and shutting off the boiler-pressure, and by continuing to screw the stem G outward until it comes to a stop the said pressure is entirely shut oii' within the boiler. The gage or cock may be normally left in the position last described, so that if accidentally broken the same will be closed and the escape of the steam effectu ally prevented; or when thus closed the valve-casing may be entirely removed from bushing B and disintegrated for the purpose of cleaning or repairing, as may be necessary. l

The device here shown and described is adapted to be used either as a globe-valve or gage-cock, and in order that it may be used as a globe-valve I provide the valve-body D with the screw-threaded connection N, Whereby the same may be connected up in a line of pipe, as will be readily understood. In such cases, of course, the nib D may be conveniently removed.

Then it is desi red to have both connections of the valve in the line of pipe, the pipe connection )I (indicated in dotted lines in Fig. l) may be used, which may be conveniently adjusted to casing B, said connection having the enlarged portion M' surrounding the check-valve, whereby there may be ample steam or water to alford free and proper operation of the check-valve. Pin O, extending into the interior of bushing B between the end members of the check-valve, serves to hold the same from removal and in constant operative position.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. The combination of bushing B,elo.ngated check-valve J for closing the same and formed with outwardly-projecting pin K, the valvebody secured to the bushing, tube F in line with the bushing and projected into the valve-body to form a seat, the pin K of valve J extending through the tube and adapted when the valve is closed to project through the inner end of the tube, the valve-stein, and a valve adapted to be moved thereby to and from its seat on the tube, said Valve when being seated being adapted to press longitudinally on pin K and thereby open valve J, substantially as shown and described.

2. The combination of elongated bushing B having the outer end of its bore enlarged to form a seat or shoulder, externally-flanged tube F adapted to rest on said seat and alining with bushing B, the valve-body inclosing the tube and attachably secured to the bushing where it also clamps the tube in place, said tube projecting Well intov the valve-body to form a seat, check-valve J for the bushing, the valve-stem, valve I adapted to be operated thereby to open and close the tube, and pin K arranged between the valves I and J and operating through tube F to open valve J when valve I is being seated in the manner and fou the purpose, substantially as herein shown and described.

The combination of the bushing, the valvebody, the check-Valve for the bushing, pin K projected from the check-Valve through a seat in the valve-body, valve-stem G and removable valve I carried thereby and adapted to seat in the Valve-body and formed with central metallic projection K' in line with and adapted to engage pin II for the purpose substantially as herein shown and described.

4:. The combination of the groovcd longitudinally-movable valve-stem, the valve-casing, spring-arm L secured thereto and extending longitudinally with the stem, and the lateral extension L at the outer end of the arm adapted to engage the groove of the stem, for the purpose substantially as herein shown and described.

In testimony whereof I afx my signature in presence of two witnesses.

ELMER E. KERNS.

Titnessesz HERMAN H. NORTH, F. II. ROBERTS.