US1269587A - Gage-cock. - Google Patents

Description

c1. w.- Enos.

ems COCK. APPLIGATION' FILED APR. 2, i9l7.

,269, 587; Patented June 18, 1918.

fizz/entoiir UNITED STATES PATENT OFFICE.

- CHARLES W. ENOS, OF PEABODY, MASSACHUSETTS.

GAGE-COCK.

Application filed April 2, 1917. Serial No. 159,074.

- cent to the normal water level for the purpose of determining whether the water is at said level or belowthe same.

Another object of the invention is to provide a cock provided with a valve and packing to doubly seal the same.

he invention consists in the combinatlon and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings:

Figure 1 is a side elevation of a valve embodying my invention.

2 is a section taken on the line 2-2 of \Fig. 1,- showing the gage cock closed.

Fig. 3 1s a section, similar to Fig. ,2, showin t e gage cock in its open position.

ike numerals refer to like parts in all views of the drawings.

In the drawings, 1 is a casing screw threaded at. 2 to provide connection with the front of a boiler. The opposite end of the casing 1 is also screw threaded at 3 to receive a cap 4 provided with a flange 5 adapted to engage a packing ring 6, and when said ca is screwed on said casing said packin wi be compressed and firmly engage a va ve stem'7 arranged within said casing and packing and also protrudin from said casing through a hole 8 in sai cap. The inner end of the stem 7 projects through and substantially fits a hole 9 formed in the end of said casing, said hole having communication with the chamber 10 of sa1d casing.

A valve 11, slightly smaller in diameter than the chamber 10, is attached to the inner.

end of the stem 7 and engages a seat 12 formed at the juncture of the chamber 10 and hole 9. The protruding portion of said stem 7 is provided with a transverse passage 13 arranged just outside of the cap 4 when the valve 11 engages the seat'12; I

A second passage 14, having communication with the transverse passage 13, extends Specification of Letters Patent. PatentedJ 11116 18, 1918. i

longitudinally of the stem 7 to the end 15 of said stem. The passages 13 and 14 constitute discharge passages and are adapted to be arranged, when the valve stem 7 is moved inwardly, so as to provide communication between the chamber 10 of said casin and the exterior thereof," this being accomp ished when the passage 13 reaches a position just inside of the seat 12, as shown in Fig. 3.

Means are provided for moving the stem 7 longitudinally of the casing 1 and at the same time moving the valve 11 away from its seat; This means preferably consists of a bell crank lever 16 pivotally connected at v 17 to the outer end of the stem 7 and a link 18-pivotally connected to said lever at 19 and at 20 to an car 21 formed upon the casing 1.- The portion of the lever 16 between the pivots 17 and 19 constitutes one member of a toggle and the link 18 forms the other member of the .toggle which is operated upon the depression of the arm' 22 of said lever 16 to move the stem 7 into the casing 1 and the passage 13 just inside of the seat 12.

If the level of the water Within the boiler is even with or above the level of thepassage '14 of the valve stem when the lever 22 is depressed, as hereinbefore stated, water will be discharged by the pressure within the boiler through the discharge passages 13 and 14,

indicating to the operator that the water is at the correct level. Should the water be below the point mentioned steam will be dis- .charged through the passages 13 and 14 and indicate to the operator that the water is not at the level of the gage cock.

The preferred means for connecting the toggle end of the lever 16 with the stem 7 is by means of a member 23 which has a screw threaded hole 24 extending entirely .therethrough, the threads thereof being adapted to engage, at one end, corresponding threads formed upon theend of thestem 7. A plug 25 is inserted in the opposite end of said hole. An ear 26 extends-[upwardly from the member 23 and to said our the lever 16 is connected by the pivot 17;

A nozzle 27 is formedupon the member 23 and is providedwitha passage; 28 extending therethrough and communicating with the passage 14, sa1d nozzle being disposed at an angle to the vertical plane so as to discharge water or steam to one side of the operator when he operates the cock. The nozzle 27 is furthermore so positioned relative to the ear 26 that the member 23 may be reversed on the stem and thereby position the nozzle so as to direct the discharge from the boiler in an opposite direction, if desired.

This may be accomplished by removing the plug 25 and pivot 17 and unscrewing the I member, 23 from the end of the stem 7 and reversing the member 23 upon said stem, i1?!- serting said plug 25 in the opposite end and then connecting the lever 16 by means of the pivot screw 17. The inner end or head of the valve 11 is preferably squared ofi at 29 and is directly opposed to the prsssajre of steam or water within the boiler, conse quently, when the lever 22 is depressed by pulling the chain 30 this action must be in opposition to the pressure within the boiler and when the chain is released said pressure will act against the end 29 of said valve and positively seat said valve.

The simplicity of the cock is evident. The durability of the cock is the result, principally, of the simplicity and the arrangement of the valve 11 and passage 13, that is to say, the cock will not be open so as to discharge the water orsteam therethrough until the valve 11 has been moved a distance from the seat 12 equal to the distancebetween the transverse discharge passage and thehead of said valve, consequently there will be no wearing of the seat due to the forcing of steam and water between said valve and its seat when the valve is nearly closed.

,The packing 6 is another factor which co= operates with the valve to render the same absolutely tight and prevent steam or water 'from scoring the valve seat when the valve is nearly closed.

Having thus specifically'described my invention what I claim and desire by Letters Patent to secure is;

l. A gage cock having, in casing, a valve adapted to seat in said casing, a reciprocating valve stem protruding from said casing, said-stem having a discharge passage extending longitudinally thereof provided with an inlet opening in the side of'said stem and an outlet opening at'the end thereof, a nozzle reversibly secured to the end of said stem, adapted to be reversed to change the. direction of dis charge and a toggle connected at one end to said casing and at the opposite end to said nozzle, adapted to operate said stem to connect and disconnect said discharge passage with the interior of said casing.

2. A gage cock having, in combination, a casing, a valve adapted to seat in said casing, a reciprocating valve stem protruding from said casing, said stem having a discharge passage extending longitudinally thereof provided with an inlet opening in the side of said stem and an outlet opening at the end thereof,- a nozzle having a screw threaded hole eXtending-therethrough, adapted to receive, in either end thereof, the

combination, a

end-of said stem, the discharge end of said nozzle being disposed substantially at ri ht.

angles to said screw threaded hole, a p ug adapted to close the opposite end of said hole, an ear on said nozzle disposed at an angle to said discharge end,.and a tog le attached at one end to said casing and etachably secured at the opposite end to said ear, whereby said nozzle may be reversed on said stem to change the direction of discharge.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit a nesses.

C i LES W. ENDS.

Witnesses:

SYDNEY E. Tan, Ham E. Smrron.

. l m obtained for five cents each, by addressing the Commissioner of Emerita,

Washington, 9. Q.

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