US1526475A - Interlocking control system for apparatus valves of water-gas sets - Google Patents

Description

Feb, 17; 1925. 1,526,475

F. B. HAYES I NTERLOCKING CONTROL SYSTEM FOR APPARATUS VALVES OF WATER GAS SETS Filed May 3, 1923 2 Sheets-Sheet l F. B. HAYES I INTERLOCKING CONTROL SYSTEM FOR APPARATUS VALVES OF WATER GAS SETS Filed Ma 3 2 Sheets-Sheet 2 has Patented Feb. 17, 1925..

FRED B. HAYES, OF FORT VIAYNE, INDIANA, ASSIGNOR TO THE WESTERN GAS CON- STRUCTION COMPANY, OF FORT WAYNE, INDIANA, A CORPORATION OF INDIANA INTERLOCKING CONTROL SYSTEM FOR APPARATUS VALVES 0F WATER-GAS SETS.

Application filed May 3, 1923. Serial No. 636,419.

To all whom it may concern:

Be-it known that I, FRED B. HAYEs, a citizen of the United States, residing at Fort Wayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Interlocking Control Systems for Apparatus Valves of ater-Gas Sets, of which the following is a specification, reference being had to the accompanying drawings, and to the reference characters marked thereon, which form a part of this specification.

1 This invention relates to means for automatically controlling water gas apparatus, and 'more particularly for controlling the action of fluid pressure cylinders for operating the various apparatus valves in such gas apparatus.

In the manufacture of water gas, as it is commercially practiced at the present time, the operations are such as to require the manipulation of a number of valves in,ccrtain sequence and at certain intervals, which requires considerable skill and constant attention on the part of the operators in order to avoid errors which may cause explosions, and in order to produce a gas of uniform quality. andthe maximum results in quantity and quality of gas of which the apparatus is capable. I

Briefly stated, the gas making apparatus comprises a generator, carburetter, and su-' per-heater provided with a stack. There are sources of air supply to the generator and to the carburetter; steam supply to the generator, and oil to'thc carburetter: all valve controlled; and, of course, the necessary piping.

The operation of such [an apparatus or water gas set, as it is called in the trade, is divided into two periods known as the blast and the run. The blast serves to raise the temperature of the fuel bed in the generator and the checker bricks of the carburetter and superhcater to produce an incandescent heating surface. and the run is the gas-making period.

Presuming that the generator is charged with fuel, the blast is started in the fol lowing manner: The stack valve being open," thegencrator blast valve will be opened to admit air under pressure below the fire. The gases produced by the combustion pass through a reversing valve, generally known as a hot valve, to the carburetter, where they burn upon meeting a current of air which has been admitted into the carburetr 'ter by the opening of the carburetter blast valve, and from thence to the superheater and to the stack. These valves, namely the generator air blast, carburetter air blast, hot valve, and the stack valve, will remain open for a period of time, generally about three minutes, after which the carburetter air blast valve will first be closed, and then the generator air blast valve will-be closed. This blast period having been completed, the fuel in the generator and the checker brick of the carburetter and superheater wi l .be in an incandescent condition.

The run or actual gas-makingperiod, of approximately four minutes, is started by first opening the generator steam valve, to admit steam under the incandescent fuel. Immediately after the opening ofthe steam valve, the stack valve will be closed, and then the carburetter oil valve opened. After the predetermined interval of time, it is desirable to reverse the run of the steam by passing it down through the bed of incandescent fuel in the generator instead of upwardly therethrough. This is accomplished by reversing the hot valve which automatically governs the admission of steam into the generator. At the end of this down-run, the carburetter oil valve is closed and the hot valve again reversed to admit steam for a very brief up-run, after which the generator steam valve is closed. The stack valve is opened immediately after the steam valve is closed. 7

From theforegoing, it will be manifest that in a complete cycle of operations, a con siderable number of valves must be opened and closed in every six to eight minutes. Furthermore, the operation of the various valves must occur in the proper order and at proper time intervals, as the failure of any of the valves to properly operate may produce dangerous conditions in or about the apparatus.

To insure the proper operation of the various parts of the apparatus, it has been proposed to mechanically operate the various valves of the water gas set by means of a fiuid'pressure cylinder connected with each main valve, and also to regulate these cylinders, or the flow 'of the fluid thereto,

' man or timing machine. It has also been by automatic devices called a mechanical proposed to make'the timers not only automatlc but interlocking, so that the timer, as a unit, will cease to operate if one of its own parts fails to properly function. Aserious diiiiculty, however, is experienced when one of the apparatuswalves or its operating cyl or at the right time.

each valve being located in a conduit which supplies the motive power or operating fluid fora. articular motor or apparatus valveactuating device, and means connecting said control valves to the various apparatus valve motors whereby the action of an apparatus valve will govern the action of the control valve. I

It is the main object of the present invention to obviate all of the above mentioned objections and to eliminate pomibility of improper action of the apparatus valves due to any cause. My object is to produce an interlocking control system in the conduits carrying fluid under pressure to the valveoperating cylinders of a water gas set, and to automatically control or interlock the operating cylinders for the ap aratus valves,

whetherthe o erating fluid or said cylin ders is control ed= manually or by timer machines automatically operated.

Another object of my invention is to .con-

nect a system of signals with the control system, whereby notice of anything having gone wrong will be conveyed'to the operator. y 1

These and other objects and advantages of my invention will be manifest as I proceed with my specification, my invention consisting in the control system and in the devices and combination of devices herein illustrated, described, and more particularly pointed out in the claims hereto appended.

, In the accompanying drawings, I have illustrated my invention as applied to a conventional water gas set, but it will be apparent that it is applicable to other forms of a paratus and that the various details of mecl ianical construction may be modified by those skilled in this art to suit the need rticlar installation. In sal drawings Fig. 1 is a diagrammatic elevation, partly fying the 'various parts, and subsequently I will point out the method of operation of the various features more in detail by reference to Fig. 2.

The water gas apparatus or set illustrated in Fig. 1 comprises a generator A, carburetter B, superheater C, a source of air supply E (as from a blower, not shown),

a source of oil supply F, a source of steam supply G, apparatus valves such as the generator blast valve H, carburetter blast valve I, stack valve J, reversing or hot 'valve K, stem valve L and oil valve M; also a water seal or wash box N, a timer machine 0, and numerous pipe lines or conduits hereinafter referred The main or apparatus valves H, I, J, K, L and M, are operated from the cylinders 1, 2, 3, 4, 5 and 6, respectively, in a familiar manner, and any suitable fluid under pres-- sure, as for example, water, gas, oil, or air, is "sent from the timer machine 0 to the several cylinders 1, 2, 3, 4, 5 and 6, and returned to the timer by a circulatory system of piping. The timer 0 is supplied with an inlet or supply pipe P and an exit or outlet pipe Q.

An exit 21 in the dome of the superheater 0 leads by a tee-connection both to the stack and to the water seal N. The air blastleads;

from the pipe E through the valve H toithe generator inlet port 0; and to .the carbu-- retter, through the valve I to the pipes g and d to inlet port f.

In the steam supply line G and between the steam valve L and the generator steam lines 7 and 8, is a two-way steam valve D,

which is operatively connected with the reversing valve K, whereby steam is supplied through the line 7 to the lower port a of the generator for the np-run and through the line 8 to the upper port I) for the downrun. An oil supply pipe F, when the valve M is opened; furnishes a spray of oil to-the carburettor B, through a suitable nozzle.

R is a whistle in the air line 1 connected to the air conduit between the generator blast valve H and the generator A. S is a steam whistle connected by the line 8 to the steam supply pipe between valves L and D.

The cylinder 1 for operating the generator blast valve H is actuated by fluid under pressure from the timer Ov through the conduits or lines 9 and 10. The cylinder 2 which actuates the carburetter air blast valve I has a connection vwith the timer'O through the conduit or line 11 and 12. The cylinder 3 which actuates the stack valve J connects with the timer 0 by the conduits 13 and 14. The-cylinder 4 which actu'ates the hot valve K connects with the timer 0 by the conduits l5 and 16. The cylinder 5 which operates thesteam valve L connects with the timer 0 by conduits or lines'17 and 18. The cyl inder 6 which actuates the oil valve M connects with timer 0 by the conduits or lines 19 and 20.

When the steam is on the down-run, the gas produced passes out of the exit 0' to a branch pipe 2lrthrough the hot valve K and through the pipe 22 and conduit d to the carburettor B", I

Further details need not be stated as the gas set just described. is conventional and well known. To such an apparatus I apply my invention, as more fullyshown in Fig. 2. I will now proceed to describe my interlocking control system, which, it will be seen by reference'to Fig. 2, includes a series of small interlocking or controlvalves designated by the numerals 25 to 38, inclusive, located in the various conduits 9 to 20 inclusive, whichconduits supply the operating fluid under pressure to the cylinders which actuate the apparatus valves H, I, J, K, L and M the control valves being so connected together and with the various parts of the gas set, as hereinafter more fully explained, as

, to open'or close off, as the case may be, the

fluid supplyin said conduits to the cylinder which actuates the valve which is designed to operate in the next succeeding cycle of operations, and to influence certain other parts of the system, by locking the valve-operating cylinders against operation, so that no valve-operating cylinder will operate or start to operate until (and only when). the valve operated by the cylinder next proceding in the cycle of operations has completed its work and has fully functioned. This interlocking or control of the movementof of any one of-the said apparatus valvesoccurs equally, whether the flow of liquid under pressure through said control valves is toward or from the valves; that is, whether thecontrol fluid is operating in a direction to cause the opening of a given apparatus valve or in the opposite direction to cause the closing of said valve. It will also be understood that the fluid to actuate the several cylinders may, so as my invention is concerned, be supplied from any suitable source other vthan from the timer machine O hereinbefore referred to.

It will be seen that thepip e line or conduit 9 is provided with valves 25 and 26; the pipeline-10, with a valve 27. The line or conduit llconnected with the carburetter blast valve operating cylinder 2, is provided with'a valve 28. The conduit or line 13 connected with the stack valve operating cylinder 3 is provided with valves 29, 30 and 31, while its companion line 14 is provided with-a valve 32.- The line 16 from the hot valve operating cylinder 4 is provided with a valve The line or conduit 19 from the oil valve operating cylinder 6 is provided with valves 34 and 35.

The steam whistle line 8 is provided with valves 36 and 37 and the air whistle line r has a valve 38. The valves 26, 27, 29, 30, 31 and 32 are provided with springs 39, 40, 41, 42, 43, and 44, respectively, to insure prompt action for the purpose hereinafter explained.

The cylinder 1 has a piston 45, piston rod 46 connected by a suitable coupling 47 with the valve stem or lever 48 of the blast valve H. Secured to the valve actuating stem or lever 48 are two arms 49 and 50; the outer end of the arm 49 straddles and has sliding connection with a rod 51 which connects the valves 28 and 38. Fixed upon said rod 51 are twospaced apart collars or shoulders 52, 53, the end of the arm 49 being between said collars. The valve 29 has a stem 54 similarly provided with fixed collars 55 and 56 and the end of the arm 50 has sliding engagement with the stem 54 between said collars 55 and 56.

Similarly, the valves 26 and- 30 are provided with stems 57 and 58, respectively, and these stems have fixed, spaced apart collars 59, 60, and 61, 62, respectively. The cylinder-2 has a piston 63, piston rod 64, 'and coupler connection to the arm or stem of the' carburetter blast valve I. Upon the latter are rigidly secured the two arms 66 and 67, which have sliding engagement at their ends with the stems 57 and 58,'respectively.

The cylinder 3 has. a piston 68, piston rod 69, and coupling 70, by which it is connected with the lever or stem of the stack valve J, and the said valve stem or lever is provided with two fixed arms 71. and 72, the outer ends of which have sliding connection with the stems or rods' 73 and 74, respectively. The rod 73 connects the valves 25 and 36, and is provided with'two spaced apart collars 75 and 76, one on each side of the arm 71. 1 Similarly the stem '7 4 connects valves and 34, and has collars 7 7 and 7 8 for contact with the arm 72.

The cylinder 4 has a piston 7 9, piston rod and coupler connections 81, with the arm orle ver 82 of the hot valve K, and the said lever is provided with rigid arms 83 and 84. The arm 83 has sliding connections between the collars 85 and 86, on the stem 87 oi the valve 27, while the arm 84 has sliding connection between collars 88 and 89, on the stem 90 ofthe valve 32.

The cylinder 5 has a piston 91, stem 92, and a coupler connection 93 with the lever or stem of the steam valve L on which valve lever or stem is an arm 94. The valves 35 and 37 are connected by a stem or rod 95 carrying spaced apart collars 96 and 97, between which the end of the arm 94: projects and has sliding engagement with the rod 95.

The'cylinder 6 has'a piston 98, piston rod 99 and coupler connection 100 with the stem 9 of the oil valve 'M. 'To the said stem is rigidly secured the arm 101, the end of which has sliding engagement with the stem 102 of the valve 31,- which stem 1.02 carries the spaced apart collars 103 and 104:.

The operation of my. interlocking control system which includes the control valves to 38, inclusive, and their operative connec- I and the blower turned on, the first valve to be operated is the generator blast valve H. The diagram, Fi 2, shows the generator blast cylinder 1 with its piston l5 down, in-

dicating that the generator blast valve H is in the closed -position. To open the valve H, fluid under pressure is sent to the cylinder 1, through the conduit or line 9, to raise the piston and its connected generator blast valve. Immediately the generator blast valve II commences to open by means of the upward travel of the piston 45 in cylinder 1, and of the arm 50 travelling therewith, pressure is removed from the spring 41, whereupon the control valve 29 located in the stack valve' conduit 13 is actuated, resulting in stopping. circulation of fluid in conduit 13 and thus holding the stack valve J open while the generator blast valve H is open. In other words, the very beginning of the opening operation of the generator blast valve H results in locking the stack valve J in open position.

When the generator blast valve H has almost reached its open position, the piston 45 being almost at the top of the cylinder, the

arm 49 on the valve stem 48 will come in contact with the collar 52 on the stem 51 of the control valve 28 located in conduit 11,

thereby opening this control valve 28 and seems I in position to be opened as soon as it is time to operate said valve I in the cycle of operations.

Immediately the carburetter blast valve begins to open by means of the upward travel of the piston 63 in the cylinder 2, pressure of the am 67 is removed from the spring 42 which actuates the control valve 30 located in the stack valve conduit 13, thereby quickly closing said control valve 30, and making circulation inthe stack valve conduit 13 impossible. The stack valve J will therefore necessarily remain in the open position while the carburetter blast valve I is open, even if anything should go wrong with the generator blast valve mechanism. The opening operation of the carburetter blast valve I, through its valve stem and the arm 66, also releases pressure on the spring 39 which actuates the control valve 26 .located in the conduit 9, thus locking the enerator blast valve H in open position w ile the carburetter blast valve is open.

From the foregoing it will be clearly understood that the stack valve J is locked in the open position by the opening operations" of both the valves H and I, as well as by either one of them; that the carburetter blast valve I is not permitted to open until the generator blast valve H has fully opened; and that the generator blast valve H is locked in the open position while the carburetter blast valve is open.

The valves just referred to will remain in the open position for the time required for the blast period, after which the carburetter blast valve I will be closed by means .of fluid directed through the conduit 12 above the piston 63 in the cylinder 2. The closin of t e valve I and consequent reverse trave of the cylinder piston 63 will cause the arm 66 to contact with the-shoulder 60 on the I -stem of the control valve 26 in conduit 9, I

generator blast and carburetter blast valves 11 and I are closed.

To commence the run period, fluid is now directed through the conduit-17 to 0p-.

erate the cylinder fiwhich actuates the gem .erator steam valve L. As shown in the diagram, Fig. 2, the generator steam valve L is closed, the piston 91 being at the bottom of the cylinder 5. The conduits 17 and 18 are unobstructed and the valve L freeto operate. The. opening. movement of the steam valve L, by means of its valve stem and connected arm 94, causes contact with the shoulder 96 on the stem 95 of the control valve in the conduit 19 leading to the carburetter'oil-valvecylinder 6. This contact of the arm 94 with said shoulder 96 is timed to take place when the steam valve L is almost completely open, and this is accomplished by properly positioning the shoulders 96 and 97 on the stem 95 to provide for the necessary sliding or lost motion of the arm 94 before it functions to operate the valves 35 and 37. Therefore, if the generator steam valve L does not fully operate, it follows that the carburetter oil valve M will not be permitted to open, because fluid in the oil valve cylinder conduit 19 cannot circulate when the control valve 35 has not been operated by the movement of the valve stem arm 94 to open said conduit 19. The piston 98 in the oil valve cylinder 6 will, therefore, be held against movement and the oil valve M locked in the closed position.

When the generator steam valve L fully functions for the opening operation, the conduit 19 will be unobstructed (except by the valve 34 controlled from the stack valve, and

, hereinafter referred to).

Immediately following the opening 'of the generator steam valve L, at the beginning of the run the stack valve J must be closed. The conduits 13 and 14 to the stack valve cylinder 3 will be unobstructed (following the proper and complete closure of the generator blast valve H and carburetter blast valve I) so that the stack valve J may be closed at the desired time by directing fluid through the conduit 14 above the piston 68 to lower the latter in the cylinder 3.

This closing of the stack valve causes the arms 71 and 72, connected to said stack valve stem, to Contact with the shoulders 76 and 7 8 .respectively,'on the stems of the two contrglvalves 25 and 34. In both instances, the contact takes place at the end of the thrus't of the stack valve cylinder piston 68 or when the stack valve J is almost completely closed. The arm 71 contacts with the shoulder 76 on the stem of the control valve 25 in the generator blast conduit 9, and at the completion of the closing movement of the'stack valve, the control valve 25 is closed and circulation stopped in the con:

i duit 9, so that the generator blast valve H is locked and could under no circumstances be opened while the stack valve J is closed. The arm 72, in accompanying the valve stem on its downward movement to close the stack valve J, contacts with the shoulder 78 on the stem of the control valve 34 and opens the latter and the conduit 19, thus permitting circulation of fluid therein. Connected to the stem of the control valve 34 is the control valve 33 located in the hot valve conduit 16. The same operation which opens the valve 34 in conduit 19, therefore, opens the valve 33, and permits fluid to flow through the conduits 15 and 16 to the hot valve operating cylinder 4.

It is to be understood from the foregoing that at a certain time in the run or gas making period the mechanical conditions in the set are such that the operating fluid may be directed to the generator steam cylinder 5 to open the valve L and admit steam to the generator. At that moment the stack valve J is still open, and the hot valve K is locked in the up-run position by means of the valve .33 controlled by the arm 72 fixed to the stack valve stem. It will also be understood that the complete opening of the steam valve L has resulted in opening the control valve 35 in the carburetter oil valve conduit 19, but that said oil valve M is still locked against operation because of .the closed valve 34 in conduit 19 controlled b the stack valve J.

There ore, immediately after the steam vaive L has been fully opened, fluid is directed through conduit 14 to close the stack valve J. The end of the stroke of the valve J in closing results in opening the control valve 34, so that immediately after the closing of the stack valve J fluid may be directed through conduits 19, and 20, to said carburetter oil valve cylinder 6 to open the oil valve M. Water-gas formed b the steam passing through the generator 1n the up-run and through the hot valve K to the carburetter may thus be enriched with oil sprayed upon the gases. This same movement of the stack valve J, in closing, has also closed the control valve 25 in the con- 'duit 9, so that the generator blast valve H is locked against operation while the stack valve is closed. The closing of the stack has further resulted in opening the control valve 33 in the hot valve conduit 16, so that said conduit is now unobstructed. When it is desired to reverse. the flow of steam for the down-run in the generator A, fluid. will be directed in conduit 16 to the hot valve cylinder 4 to o erate the hot valve K. After the desire down-run. the fluid in conduits 15, and'16, may be directed to reverse the hot valve for the brief up-run period.

It will be seen from Fig. 2, that when the carburetter oil valve M has been permitted to open (following the removal of conduit obstructions by the opening of the generator steam valve and the closing of the stack valve, as above explained), the opening movement of the carburetter oil valve stem carrying the arm 101 releases pressure on the spring 43 and results in closing the control valve, 31 in the stack valve conduit 13,

r so that the stack valve J (having been preerator blast conduit 10, locking the stack valve J against opening while the hot valve K is in the down-run position, and locking the generator blast valve H against opening during the same period of time.

At the end of the run period, and practically simultaneously with the reversing of the hotvalve K from the down-run to the up-run positions, fluid is directed to the carburetter oil'valve cylinder 6 to close the valve M. The closing of the oil valve M operates to openthe control valve 31 in the conduit 13, leaving thatconduit unobstructed andthe stack valve J free to be opened,

Next in the operation, fluid is directed to the steam valve cylinder 5 to close thevalve L, and then fluid is directed through conduit 13 to the stack valve cylinder 3,'to open the stack Valve J. This opening of the stack valve J at the end of the stroke of the valve stem, opens or unlocks the control valve 25 in the-generator blast conduit 9 and leaves that'conduit unobstructed and the generator blast valve H free to operate. The 0 ening of the stack valve J also closes control valve 34 in the conduit 19, thereby locking the oil valve M against opening, and closes control valve 33 in conduit 16, thereby locking the hot valve K in its up-run position, which is the position it will hold during the followin blast period.

%0 now, at the end of,the run, we have the stack valve open, the generator steam valve closed, the carburetter oil valve closed and locked against opening until the stack valve and generator steam valves have again been operated, and the hot valve in the ,uprun position and locked against movement while the stack .valve is open. Also, we have the generator blast valve closed but ready to be opened when fluid is directed to its operating cylinder, and the carburetter blast valve closed, but ready to operate immediately after the generator blast/valve has completed its opening operation and unlocked the control valve 28 now closed in the conduit 11.

In this position, the set is ready for the next blast period.

Some of the control valves, those designated 26, 27 29, 30, 31 and 32, are designed to be operated quickly, under the influence of their springs, when the arms 66, 83, 50, 67, 101 and 84, respectively, are operated. However, auxiliary means are provided whereby said valves will be operated in the event anything should go wrong with said springs. For example, the arm 66 in its upward travel will contact with the shoulder 59 to closethe valve 26; arm 67 will contact with shoulder 61 to close valve 30; arm 50 with shoulder 55 to close valve 29; arm 83 with shoulder 86 to close valve 27; arm 84 with shoulder 88 to close valve 32, and arm 101 with shoulder 104 to close valve 31.

The means for signalling the operator by the steam whistle b and the air whistle R will now be described. Just at the beginning of the run period, after the steam valve L has fully operated, the control valve 37 in the steam whistle conduit 8 will be opened, permitting steam to pass to the whistle which blows momentarily, indicating that the apparatus is in order and shifting from the blast period to the run period. l

As heretofore stated, the stack valve J must be closed immediately after the generator steam'valve L is opened. The stack valve, by means of the arm 71, aetuates a control valve 36 in the steam whistle conduit a, closing said valve36 when the stack valve has almost completely closed; the closing of the control valve 36 stopping the sound of the whistle. I

Therefore, the momentary blowing of the steam whistle indicates the proper operation of the valves during the blast period, and

the stopping of the sound indicates the closing of the stack valve. preparatory to the run period.

At the end of the run,'the control valve 38 in the air whistle line 7' is 0 en. When, at the beginning of the blast the generator blast valve H is opened, air will pass through the air line 7* to the whistle R which will sound for a moment, for when the valve H is fullyv opened the arm v49 Will have contacted with the shoulder 52, thus closing the air line control valve 38. If, however, anything had gone wrong during the gas making run period, the'generator blast valve would not fully open, the arm 49 would not close the valve 38 and consequently air would flow through conduit 1* and the whistle R continue to blow until the operator gave the necessary attention to the apparatus.

The control valves 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 and 38 are'shown herein as small cylinders containing recip rocating pistons to'open and close the inlet and outlet ports; and this is a convenient mechanical form of apparatus in the several fluid conduits to control the flow. In practice, the travel of the piston is from A to of an inch. and these little piston valves answer all requirements. However, it is to be understood that other forms of control valve are equally applicable, the only requirement being that the valve located in the designated conduit is adapted to be mechanically-connected to the parts which operate and control it, so as to completely open or close the conduit to permit or shut off the flow of fluid therethrough. Various otherchanges may be made by the skilled mechanic according to the necessities of each installation 'as previously stated. i

It will be noted that the mechanism for actuating the control valves is so connected with the apparatus valves, thatif anything should go wrong, as for-example if the connecting rod between a cylinder and its apparatus valve stem should break, there would be no interference with the actuation of the control'valves by the operation of the apparatus valve. In other words, when the apparatus valves function, the control valves will be also actuated to open or close, as the case maybe, and either permit or prevent circulation. in the fluid conduits to the apparatus valve cylinders.

It is to be noted'that the control valves 29, 30, 31 and 32 in the stack valve cylinder fconduits l3 and 14;, and the control. valves 26 and 27 in the generator blast valve cylinder conduits 9 and 10 are preferably spring actuated so that the moment pressure is released from said springs by the beginning of movement of the apparatus valves associated with said control valves, the latter will instantly be actuated.

Whenever a'c ontrol valve is closed so as to stop circulation in a particular valveoperating cylinder conduit and to hold the apparatus valve, in, inoperative position,

such closing of the control valve occurs, under influence of its spring, immediately upon the beginning of'movement of the apparatus valve with which said control valve is operatively connected.

Whenever a control valve is opened so as to permit circulation'in a particular valveoperating cylinder conduit and leave the apparatus valve free to operate, such opening of the control valve occurs only when the ap aratus valve with which it is connected as almost fully operated.

Itwill' therefore be understood that the interlocking of the apparatus valves to render them inoperative occurs when a par- 4 ticular apparatus valve begins to function,

while the unlocking of the system to render the apparatus valves operative occurs when,

and only when, a particular apparatus valve or valves have completely operated. I i

From the foregoing description it wilLbo seen that I have provided means whereby-the gas set are positively governed, embodying a system of interlocked parts whereby the operation of a given apparatus valve in one cycle of the operation'of the set will lock one or more apparatus valves in an inoperative position, and will permit of the operation of certain other apparatus valves only upoii the completion of the operation and full and proper functioning of the said given apparatus valve.

I claim as my invention:

1. In a water gas apparatus provided with fluid actuated cylinders for operating the apparatus valves and with fluid conduits for said cylinders, a valve located in the fluid conduit to control a cylinder, which valve in turn is controlled by an apparatus valve.

2. In a water gas apparatus provided with actuating cylinders for operating the apparatus valves and with fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits and means associated with the apparatus valves of the set and with said control valves to lock one or more of said apparatus valves in an inoperative position -the apparatus valves and with fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits and operative connections between said control valves and the cylinders for operating the apparatus valves of the set whereby certain of said apparatus valves will operate only upon the proper andcomplete functioning of another apparatus valve.

4. In a water gas apparatus provided with fluid actuated cylinders for operating the apparatus valves and having fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits and'operative connections between the control valves and said cylinders, whereby certain of said control valveswill be actuated to close the fluid conduits at the begin ning of the movement of the apparatus valve, while other control valves will be actuated to open the fluid conduits only at the extreme end of the movement of the apparatus valves.

5. In a water gas apparatus provided with fluid actuated cylinders for operating the apparatus valves, and fluid conduits for said cylinders, a control valve located in one of t e fluid conduits, operative connections between the control valve and the cylinders for actuating the apparatus valves, said connections including means associated with the control valve to close the. latter upon the beoperation of the apparatus valves of a waterginning of the movement of an apparatus valve, and means associated with the control valve for opening the latter at the extreme end of the movement of an apparatus valve.

6; In a Water gas apparatus provided with fluid actuated cylinders for operating the apparatus valves, and fluid conduits for said cylinders, a system of interlocking control valves located in the fluid conduits, and operative connections between said cylinders and said control valves.

7. In a Water gas apparaths provided with fluid actuated cylinders for operating the apparatus valves and having fluid conduits for said cylinders, a system of control valves located in the fluid conduits, means associated with the apparatus valves for controlling the movement of said control valves, the

latter being so interlocked as to prevent the operationofa given apparatus valve until the apparatus valve next preceding it in the cycle of operations of the water gas apparatus shall have completely and fully tunetioned.

8. In a water gasiapparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for ,said'cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the controlvalve in the conduit leading to the carburett'er blast valveoperating cylinder will be actuated by the operation of the generator blast valve.

9. In a Water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits,

and operative means whereby the control valve in the conduit leading to the carburetter blast valve-operating cylinder will be opened by the opening of the generator blast valve.

10. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the stack valve-operating cylinder will be actuated by the operation of the generator blast valve. 11. In a'water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the stack valve-operating cylinder will be closed by the opening of the generator blast valve.

12. In awater gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of interlocking control valves located in the fluid conduits,

Lee s/e an air Whistle alarm, and operative means apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylindeis, a plurality of control valves located in the fluid conduits, an air whistle alarm, and operative means whereby the control valve in the conduit leading to the air whistle will be closed by the opening of the generatorblast valve.

l i. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits,- an: operative means whereby the control valve in the conduit leading to the stack valveoperating cylinder will be actuated by the operation of the carburetter blast valve.

15. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, aplurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the stack valveoperating cylinder will be closed by the opening of the earburetter blast valve.

16". In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluidconduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the generator blast valve-operating cylinder will be actuated by.

the operation of the carburetter blast valve.

17 In a water gas apparatus wherein the apparatus valves are operated by fluid ac.- tuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and

operative means whereby the control valve in the conduit leading to the oil valve-operating cylinder will be actuated by the operation of the generator steam valve.

19. In a water gas apparatus whereinthe apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of controlvalves located in the fluid conduits, and operative means whereby the control valve in the conduit leading tothe oil valve-operating cylinder willbe opened by the opening of the generator steam valve.

20. In a water gas apparatus wherein the ,apparatusvalves are operated by fluid acthe steam whistle will be opened by the opening of the generator steam valve.

22. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in'the conduit leading to the carburetter oil valve-operating cylinder will be actuated -by the operation of the stackvalve.

23. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the carburetter oil valve-operatin cylinder will be closed by the opening 0 the stack valve.

24. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the hot valve-operating cylinder will be actuated by the operation of the stack valve.

25. In a water gas apparatus wherein the apparatus valves are operated by fluid aetuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located inthefluid conduits, and operative means whereby the control valve in the conduit leading to the hot valve-operating cylinder will be closed by the opening of the stack valve.

26. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative meanswhereby the control valve in the conduit'leading to the generator blast valve-operating cylinder will be actuated by the operation of the stack valve.

27. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the generator blast valve-opcrating cylinder will be opened by the opening of the stack valve.

28. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits I for said cylinders, a plurality of control valves located in the fluid conduits, a steam whistle alarm, and operative means whereby the control valve in the conduit leading to the steam whistle will be actuated by the operation of the stack valve.

, 29. In a water gas apparatus wherein the apparatus valves are operated by fluid acerative means whereby the control valve in the conduit leading to the stack valve-operating cylinder will be actuated by the operation of the carburetter oil valve.

31. In a water gas apparatus wherein the apparatus valves are operated by fluid ac tuated cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the stack valveoperating cylinder will be closed by the opening of the carburetter oil valve.

32. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits for said cylinders, a plurality ,of control valves located in the fluid conduits, and operative means whereby thecontrol valve in the conduit leading to the generator blast valve-operating cylinder will be actuated by the swinging of the hot valve into one osition and will be reversed by the swinging of the hot valve into its reverse position.

33.In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits run position and will be closed by the swinging of the hot valve into the downrun position. 34. In a water gasapparatus wherein the apparatus valves are operated by fluid actuatedv cylinders and having fluid conduits for said cylinders, a plurality of control valves located in the fluid conduits, and operative means whereby the control valve in the conduit leading to the stack valveoperating cylinder'will be actuated by the swinging of the hot valve into one position and will be reversed by the swinging of the hot valve into its reverse position.

35. In a water gas apparatus wherein the apparatus valves are operated by fluid actuated cylinders and having fluid conduits [for said cylinders, a plurality of control valves located in.the fluid conduits, and 0p.- erative means whereby the control valve in the conduit leading to the stack valve-operating cylinder willbe opened by the swinging of meet ng the hot valve into the up-run position and will be closed by the swinging of the hot valve into the down-run position.

36. The combination of an automatically controlled Water gas set having operating motors for the apparatus valves of said set and fluid conduits leading to saidmotors, with a control system comprising interlocking control valves located in said conduits and means 'operatively associating said control valves with the apparatus valves and said motors whereby the control valves t are governed by the action of the apparatus valves.

In testimony that I claim the foregoing as my invention I afiix my signature, in the presence of two witnessesythis 27th day of April, 1923.

FRED B. HAYES.

Witnesses:

TAYLOR E. BROWN, B. L. MCG'REGOR.

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