US235101A

US235101A - Cylinder-cock

Info

Publication number: US235101A
Authority: US
Publication date: 1880-12-07
Anticipated expiration: 1897-12-07

Description

(No Model.) 2 S11ee11sm8hee112. J R Y A N Cylinder Cook.

116,235,101. Patented Dec. 7,1880.

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ArtNr CYLINDER-COCK.v

SPECIFICATION forming part of Letters Patent No. 235,101, dated December '7, 1880.

Application filed April 24, 1880. (No model.)

To all whom it may concern Be it known that I, JOSEPH RYAN, of St. Louis, Missouri, have invented a new and useful Improved Automatic Cylinder-Cock, of which the following is a specification.

My invention relates to improvements in cylinder-cocks or devices for removing the condensation from steam-engine cylinders; and the objects of my improvements are, first, to construct the reciprocating valves of the cylinder-cock so as to be better able to withstand the cutting or abrasive action of the sand or grit contained in the water, achieve a more even and uniform wear on part valves and their seats, be more reliable in operation, and more durable in use; secondly, to provide but a single key or cock to serve for both purposes-viz., a blow-off cock, also the cock wherewith to regulate the final discharge of the waters of condensation; thirdly, to provide reliable acting means with which the reciprocating action or throw of the valves can be regulated to suit the discharge as to requirements from the valve-chambers; fourthly, to provide an improved cylinder-cock and blowoff cock capable of being applied to long or short stroke engines, to successfully drain same, prevent back-pressure, &c. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Sheet I, Figure l is a plan view of the cylinder-cock and blow-oft' cock, the main barrel vand its interior parts, as well as sub-barrel and its single key or cock, being shown in horizontal section. Figs. 2 and 3 are, respectively, enlarged views, each taken on the line av w, showing the vertical key or cock and its parts in sectional elevation. The inlet branch pipe in side view, Fig. 2, specially shows the key positioned to suit the purposes of a cylindercock proper. when used as a blow-off cock. Figs. 4 and 5 are each perspective views of the improved valves employed, Fig. 5 being a modication of Fig. 4.

Sheet II represents a modification specially of the single cock or key employed to control the respective ports or water-passages. Figs. 6 and 7 show plan sections o'f such a moditication in which the single cock has five ports.

valves. Fig. 3 shows the same parts' The former igure shows the ports ofthe cock in communication with the cylinder-cock, the Alatter tgure the cock positioned as a blow-oft' cock. Figs. 8, 9, 10, and l1, all taken together, constitute another modiiication, Fig. 8 being a sectional elevation, and Fig. l0 a plan section of Fig. S, likewise Fig. 9 is a vertical or sectional elevation, and Fig. 1l a plan section of Fig. 9, the position of the cock in said Figs. 8 and l0 being for cylinder-cock purposes, while the position of the cock shown in Figs. 9 and ll is for blow-off' purposes, all said four last-named figures showing that the out-- let or discharge can be effected through the stem of the cock.

Similar letters refer to similar parts throughout the several views.

' A is the main barrel to contain the pair of reciprocating valves. A' A2 are the respective steam-inlet branch pipes, and which connect the device to the cylinder-heads of the engine. B is a sub-barrel77 having the vertical shell B', which contains the key B2, that controls the discharge through the center outlet or branch, B3.

As seen in Figs. l, 2, 3, I cast or construct the parts A, A', A2, B, B', and B3 all in one piece, so as to form one casting.

The interior of the main barrel I construct as follows: a, a are the respective valve-chambers, with center guide at c2, as shown in Fig.

1. a3 a4 are the valve-seats. b b are the outer or blow-off water-ports, each communicating from the respective valve-chambers to the center outlet, B3. b2 b3 are the inner ports or passages, likewise communicating, respectively, from each valve-chamber to the center outlet, B3. (See Fig. l.)

c c', Figs. 1, 4, 5, represent my improved As shown, each valve, as an entirety, consists of a stem, d, the adjoining wings or ribs df, the valve c proper, and the further wings or ribs d2 on the opposite side of the valve, as shown in Figs. 1,4 5 or saidvalves can be of the construction shown in Fig. 5, to embrace, besides the parts just enumerated, these same parts duplicated on the other side of the valve, and being the parts-viz., the wings or ribs d2 and stem d3.

I am aware that for cylinder-cocks valves IOO have been employed having a single stem; also stems projecting from both sides of the valve-disk.

The valves with the stein or stems and wings combined, as shown in either Figs. 4 or 5, produce the following` functions, results, and advantages: First, the greatest possible amount of metal exists close to the opposite sides of the valve-disk, consequently achieving greater strength and durability of the valve parts, adapting same specially to better resist the greatest pressure and concussion, (in the act of opening away from or closing against their seatsg) secondly, the diameter of the stems being less than that of the wings, the former can therefore be better tted to move in the bore of the screw-caps, and hence the latter can be made very strong and durable; thirdly, the wings or ribs, by virtue of their shape, and ex tending from the centerline of the valve-body, as shown, are first acted upon by the steam. The pressure tends to rotate said wings; consequently the wear and grinding action ofthe valves and seats will be more even and uniform.

I prefer to employ the valve shown in Fig. 5, having both stems projecting from the valvedisk, to constitute the pair of valves to operate in the main barrel. Each valve is so arranged within the barrel A that the stems of each valve abut against each other in the center guide at a2. (See Fig. l.) A simultaneous operation of both valves is thus had-that is to say, the pressure of the steam, acting to close the open valve by forcing it to its seat, causes said valve, by its stem, to strike the contiguous stem ofthe other or closed valve, and forces same away from itsseat, and said action on part both valves is continued in vice versa manner. The alternate reciprocation of the valves o c changes the communication to the passages or ports b2 b3 for the condensation to pass out ofthe cylinder-cock or center` outlet, B3.

It is of importance that the ports b2 b3, or

- outlet for the condensation, can be regulated as desired. For this purpose I have provided screw-caps E E to close the respective ends ofthe main barrel. Further, through the cap E passes an adjusting screw, E2; likewise through cap E a similar screw, E3. Both said adjusting-screws are so arranged that the inner end of each can engage the outer end of the valve-stems, or, as indicated in Fig. 1, the end of the wings Z2 of each valve. By adjusting either or both of the screws E2 E3 the throw,77

play,77 or action of each valve and its parts can he regulated, enlarging or making smaller the distance between the valves and their seats; hence the escape of the water through the ports b2 or b2 can be made to suit, and that without the necessity of disconnecting any part. Also, this adjustment of the valves is accomplished from the outside or at the ends of the cylinder-cock.

I lay stress upon the employment of a single cock or key, not only to control the escape of the condensation through the ports b2 b3 and center outlet, B2, but also to serve at same time to control the ports b b. Thus to control the passages or ports b2 b3 the body of the cock B2 has the horizontal port marked e. (See Figs. l and 2.) When the cock is turned to the position shown in Figs. l, 2, its port e comes in line with the junction of ports b2 b3 and the center outlet. The escape or discharge ot' the water from each valve-chamber can thus take place through either of the ports b2 or b3,- thence through the body of the cock by way of its horizontal port e, out of the outlet B3, aiid as shown by arrows in Figs. I and 2.

To control the passages or ports b b', the body of the cock B2 has the further angular port etliat is, said port c branches from the horizontal port e, first in a downward direction, thence transversely, where it communicates with the center outlet, B3, in manner shown in Fig. 3. By therefore turning the cock B2 so that its port e comes in line with either of ports b b', the blow-oft' or discharge takes place through either of said ports b b', port c, thence out of center discharge. (See arrows in Fig.3.)

As apparent, when the cock is turned to be in open communication with ports b2 b3, the blow-oft' ports b b are closed by the body ot' the cock, and similarly, when the cockis turned to establish communication with the blow-oli' ports Z1 b', the body of said cock shuts oi` communication with the ports b b. (See Figs. l, 2, and 3.)

'Ihe parts being thus constructed and arranged, the operation is as follows: In starting the engine, and the Valves being in the positions shown in Fig. l, the pressure of steam is supposed to be acting against the valve c', keeping same closed onto its seat, shutting the port b3, and having opened the port b2 to the valve-chamber a, in which the valve c is shown away from its seat. The condensed steam can now pass, as shown by the arrows, from the cylinder-heads through the valvechamber ct into port b2; from thence, through the port e in the cock, out of the outlet B3. At same time, be it noted, the cock closes the blow-off ports b2 b3. In this position of the parts the cylinder-eock is fully open and automatic in its action. At the next stroke of the engine the action of the valves is reversed-viz., c closes on its seat, closing the port b2, while c opens away from its seat, opening the port b3, effecting the discharge through said port b3 and e out of B2, the position of the cock B2 having remained the same.

To operate as a blow-off cock, the cock B2 is turned to bring its port e in line with b b', shutting the ports b2 b3, Fig. 3. The accumulated waterin the cylinder can thus be blown oft' or discharged out of the cylinder-cock with perfect freedom.

IOO

IIO

In using the modifications shown in Sheet II the main barrel A and sub-barrel B, with their parts and ports b b b2 b3, remain the same.

In Figs. 6 and 7 the arrangement of the ports in the body of the eoek is such that the ports marked e e establish open communication with ports b2 b3 when the oook B2 is turned in the position shown in Fig. 6, and the ports marked e e e establish open communication with ports b b' when the eoek is in the position shown in Fig. 7.

Figs. 8, 9,v l0, and 11 show the modification that permits the outlet for the water to take place through the hollow body of the cock itself in both the uses-viz., as a cylinder-cook proper, also as a blow-oft' cook. The outlet branch B3 can thus be dispensed with.

What I claim is- 1. The' improved cylinder-oook consisting of the main barrel A, having valve-chambers a a', seats a? a4, the ports b2 b3, the valves c, having wings d cl2, stem or stems d cl3, the caps E E', the eoek B2, having ports e e, to operate as and for the purposes set forth.

2. In combination With barrels A and B, the former having ports b2 b3, the latter barrel having ports b b', the single eoek B2, having ports e and e', by means whereof the said cook serves both for the uses of a cylinder-cook and blow-off oook.

3. The combination of the main barrel A, having valve-chambers aI a', the pair of valves, each eonsistin g of a valve-disk proper, having Wings d d2, stem or stems d d3, the caps E E', their adjusting-screws Ez E3, by means Whereofthe throw of said valves can be regulated, as and for the purposes set forth.

4. rIhe improved cylinder-cock consisting, essentially, of the Combination of vthe main and sub barrel parts, the former having valvechambers a a', center guide, a2, ports or passages b2 b3, the latter barrel having passages b b', the pair of valves, each consisting of a valve-disk, c, projecting Wings d' dz, and stem or stems d d3, caps E E', adjusting-screws Ez E3, and key or eoek B3, having ports e e', all said parts constructed and arranged to operate in the manner and for the purposes set forth.

JOSEPH RYAN.

Witnesses:

CHARLES PIGKLEs, WILLIAM W. HER'IHEL.