US1670125A - Automatic receiver pump - Google Patents

Description

May l5,-'l928.'

H. G. SHORTT AUTOMATIC RECEIVER PUMP Filed April 8, 1927' I s Sheets-Sheet 1 ATTORNEY May 15, 1928.

H.-G. SHORTT AUTOMATIC RECEIVER PUMP s Sheets-She'et 2 Filed April 1927 May 15, 1928.

' 1,670,125 H. G. SHORTT I AUTOMATIC RECEIVER PUMP Filed April 1927 5 Sheets-Sheet 3 W ATTORNEY May 15, 1928.

H. G. SHORTT AUTOMATIC RECEIVER PUMP 5 Sheets-Sheet 4 Filed April 8, 1927 May 15, T928.

- H. G. SHORTT AUTOMATIC RECEIVER PUMP Filed April 1927 5 Sheets-Sheet 5 H. a J 7 w W lb lilul \S: I riil ||l lllll'llnl m lllllllul M, UNI H m "m H,

Patented May 15, 1928.

. uulria star irowann e. snon'rr, or cen'rnaennnw ong, assienon'or own-Henr "r0 SYTEBBINS: ENGINEERING AND MANUFACTURING COMPANY, or 'warnn'rown, N ORK, A1

oonronn'rzon or-nnw YORK.

horror/[Amie RECEIVER rUMr.

Application filed hpri'l 8,1927. Serial no. 151,950. 4 i

This invention refers to an automatic receiver pump, designed chiefly for handling high temperature condensate, boiler feed Water, andthe like, zit-being adapted for use With air, steam, Water, gas, and all other kindsof gases, fluids, and liquids; and in tact it is intended to be utilized for handling any kind of fluid or liquidor other similar substance or material; as, for example, the

device'may serve in connection with steam condensation plant, or: a hot Water heating system, or a water distribution apparatus, or any other apparatus, mechanism or system j Figure 3 is a vertical-central cross-section of the valve devices and proximate parts at right angles to the sectionalview in Figure 2, certain parts being in side view.

havlng a similar purpose.-

The present improvements relate more particularly tothat class of pumpsor auto ma-tic'receivers exemplified in the fluidjpressure alternating mechanism atent d byme a With Alder-i0 Gormier, July 28, 1925, No.1

1,547,830; and the automaticfreceiver {pump steam valve on'the line 5,5, of Figure 2.

described and claimed in my former application ior Letters Patent filed Nov. 18, 1926,.

Thepresent novel improvements are applied in'connection witli 'a single receiver, i tank or reservolr instead-0t a pluraht of receivers or reservoirs, as in the Letters Patent referredqto; and instead of a pair of control valvesfor. the-control piston which actuates the highpressure steam and vent valves of the receiver, as, in myappli'oa-tion referred to, 1 use a single control valve, for the piston and its cylinder, the same being of a l'alanced and hollow piston type to control the pressure and exhaust to and from both ends of the control-cylinder and both sides of the control piston therein. And moreover the present invention includes a novel. and ingenious disposition and construction oftho steam and vent valves torthe receiver; to- "gether With automatic devices in the receiver actuated by the level ot the Water therein for operating the pressure-control valve and causing it through the medium of the control piston and levers to positivelyopcn and close the steam and exhaust valves, so that thein automatic alternation; andthe-invention may also be saidI'toconsis-t, moreovelyin the construction, combination, and arrangement oft-he var ousparts, substantially as Will be hereinafter described and claimed;

numerous details and peculiarities in the Inthe accompanying drawing illustrat ng my invention:

Figure 1- isa Figure 2 is a vertical; section of the same:

front elevation of my improved automatic receiver pump. p

through the valve devices in' aplane parallel-,

to the .head oi the receiver.

Figure 4 is a detail sectional View 'o'f-tlre I vent valve on the line 4:, 4, of Figure 2.

Figure 5 is a detail sectional view of the Figure 6 is an inside face view on a --re-" passage for the receiver. a 1

F1gure;'7 is a horizontal sectional plan control. piston and cylinder. 1

Figure 8 is a sectional side elevation on the line 8, 8-,v of FigureY.

view of the control piston anditS cylinder, a and shows contiguous thereto in cross-section f the single operating valve which actuates'the Figure 9 is a vertical section on the lines 9, 9, of Figure 7 V v Figures 10 and 11 are sectional views similar. to Figure 9 of a modified form of the pressure valve. i

Similar char'a ters of reference designate correspondingjparts throughout all ferent figures ofthe drawing. v

In the present specimen'or example of the invention, as delineated for explanatory purposes, A denotes a tank, receiver, or reser-' voir, which may be of any size, shape, and

design, andmaybe considered for examplev as arranged with a steam condensation plant.

The condensation Water flows intofthetank ening :60. This automatic 'pumpingof the recei'ver isaccompl-ished through the agency through the opening a, and at; the proper of high pressure steam which enters the top-Q -o:t'ita-i1-k Athrough an port F after 1' again with water.

the tank has completely filled up with water; The introduction of, steam pressure against the water when the tank is full has the function of expelling the water, and after this clone the steam is vented to atmosphre or elsewhere through the same port F,

so that the tank A will be at libertyto refill Tank A has a removable tank head B bolted thereto by bolts 6, and

formed on the face nearest the tank with an elongated steam supply port D having an inlet port d through which a steam supply valve introduces steam to the supply port D; and the head B is also formed with an elongated discharge or vent port 0 for the steam after it is used, the same having an outlet port c throughwhich the steam enters the steam'vent valve/ The ports C and D merge together in the union port E which connects them'both with the receiver port F through which at one time'live steam from port D enters-the receiver *and at another time the steam allowed to escape into vent port C all as I shall presently describe in detail. When steam enters port D to fill the receiver i't will also fill port C and be ceiver head B and is shown so placedin Figuresl and 2; and in detail 1n F gure 5;

and the steam vent valve is supported at the left on receiver head B and is shown so placed in Figures 1: and 2, and in detail in Figure 4.

The steam" inlet valve has a casing 11 "that is bolted or otherwise secured to head B.

9 Within casing 11 is the vertically-movable valve 13, whose lower inclined end 25 plays back and forth with relation to its seat 14 and controls communication betweenthe inner chamber 19 and the outlet port (Z in passage D. A pipe'nozzl'e 31' on the valve casing 11 allows connection with a pipe conveying high pressure steam from the boiler or some other point in the steam'line to the chamber 19 on'oneside of valve 13, from which'the valve when open delivers steam to port (Z and passage D to the reservoir. Valve casing -11 has'a cover 12 bolted thereon and fashioned with a 'bearingfor the valve stem 15, which is suitably packed where it emerges fromits-bearing, a screw cap 23 being used to make a tight-joint over this packing.v

While there is a chamber 19 in casing 11 below valve 13, which is constantly filled with live steanr, there is also a chamber 32 in casing 11 above valve 18, and valve 13 is aloose fit so that steamimay pass-from The steam admischamber 19 to chamber32. Thislooseness,

is slight and is usually obtained by leaving out the packing ringson the valve. Fur ther, thevalve stem 15 which passes through the valve .13 has a winged section 17 which functions in the passage in valve 13, there being a relief valve 16 on stem 15 at the upper endflof the winged section 17 and adapted to close the passage in valve 13* when vthe valve13 is seated on itsseat 14, and also the winged section 17 projects at times below the lower end of passage in valve 13 and carries a perforated disc or block 18' that contacts against the'lower end of valve13, when valve-stem 15 is lifted, the disc at this time being received into a cavity in the valve 13 inside of valve flange 25. Hence in. the operation of the stem 15 in moving the valve 13 it will be seen that,

when valve flange 25 is closed down on seat- 14, at, which time live steam is cut offlthe relief valve 16 is also closed, but at'this' time steam can pass around valve 13 from chamber 19 to chamber 32, but when the stem 15 raised it will first open f relief.

valve 16 before the valve disc 18 liftson valve 13 andbefore valve 13 is lifted from" seat, and the steam inchamber 32* above valve 13 will find relief through the passage along between the wings of winged section 17, and through perforated block 18, into chamber 19, where the valve 13 will be lifted from its seat by thisescapingpressure, the area of'valve 13 below being greater than that of valve16.

escape of steam from the receiver'after; it hasdone its work therein of, ejectlngi the contents is quite similar inmost respects to I the'steam supply valve just desc-ribed. It

has a casing 11 in which is the valve 132 above which is achamber 32 andbelow which is a chamber '19. While-the steam chamber 19 receives live steam from steam pipe at 31, the chamber 19 'connects through port c-with the long port C, so that the 'wid est part of valve '13 is thus exposed loosely chamber 32 from chamber "19". Casing 11 is provided with a nozzle31 to which is coupled a pipe for carrying off the exhaust or vented steam, after the valve is opened to allow a discharge of this-steam from. port 0 into and through the valve to nozzle Valve 13 has a central passage a. lower valve flange 25 surrounding a recess in the valve and in the casing is a seat 14? between the outlet chamber 19f" and the port 0 The casing 11 has a cover 12 bolted thereon and providing a bearing for the valve stem 15 which is suitably packed where'it emerges from thisbearing, and a screw cap 23 is used to protect-this packing and makera tight oint.

has awingedsection 17 it which functions in to steamwhich passes aroundit and enters The'stem 15 for the'vent valve a 100 The steam vent or exhaust valve forithe nova-res the central passagein valve 13%, and at the upper end of section 17* is a relief valve'16 which at times closes .on a valve seat at the upper end oi. the central passage in valve- 13 While the lower (end of the Winged section carries a disc or block valve 18 that closes at times the lower .end of the "passage through valve body 13. The valve flange 1 25 IOIl the lower end of valve '13 seats at times on the seat 14*, and also at times rises therefrom to let the-steam vent out passseat 14 intotheescape nozzle'81 and its connections. All these parts operate lIl CllS- charging the steam in a :manner analogous to the similar parts of the steam inlet valve in admitting steam. And the function of the relief valve 16 is similar to that of the relief valve 16. "It will be noted that the steam inletva'l-ve closes tightly' beitore the steam outlet valve opens, and conversely.

The :upper end of the inlet valve stem has a recess 20 containing :at tho-end thereof a projecting pin'21which is normally pressed outwardly by a spring 22; and the dis charge valve :stem 15 has a similar recess 20 containing at "the end thereof a projecting pin 21 which is normally pressed outwardly by a spring 22*. The outer end of I stem 15-beyond recess '20 is slotted at. 24 to receive the end of one arm of a bell crank lever 26, the end of which arm is rounded or carries an anti fr-ic'tion roller which bears against the end of the yielding pin 2 1, and similarly the end of stem '15 beyond the recess 20 is slotted at 24 to receive the end of one arm. of a bell-crank lever 26, the end of which arm is rounded or carrles an ant-1 friction vnoller 3:9" which bears against the end of the yielding '21. These two lbe'll crank levers 26 and 26* actuate the two valve stems and positively open and close the inlet and. outlet valves, opening one at the same time the other is closed, and the spring devices allow the control piston to make its full :travel Without, putting any extra or damaging strain on the valve seats.

I come now to describe the control piston and rts cylinder and cooperating parts for v operating the steam inlet and .outlet valves I have just described. Figure 7v represents these parts very clearly. 1 denotes a cylinder, which is secured to the receiver head B by suitable bolts or other means as shown in Figure 3. In the cylinder 1 is a piston 2,

having a rod 4 extending in. one direction and a rod 4 extending in the opposite direction. WVithin the cylinder 1, at one side of the piston 2 is a pressure chamber 3 formceiving air or other pressure to propeltlie piston in one direction, and at the other side of piston 2 is another pressure chamber 3- for receiving air or other pressure to propel the piston in the opposite direction. Piston rod 4 passes from cylinder 1 through a hearing 5 and itsend is furnished with a pin 29- tll'fiit; is engaged .by a hook 28 on the end of one arm of a bell crank lever '26 Whose other arm carries the terminal :30 which operates the stem of the vent valve, said' bell crank lever being pivoted at, '27? on the head B. Likewise the piston rod 4: passes through a bearing 5 on cylinder 1, and its end isprovided with a pin'29that is engaged by a hook 28 on the end of one arm of a bell crank lever 26, whose other arm carries a:

round terminal 30 which operates the stem of the steam inlet valve, as already described, said bell crank lever 26 being pivoted at 27 on head B.- Through :these connections therefore itwill be seen-iho-w the contrel cylinder 1 and the control-piston 2 therein positively open and close the steam inlet and vent valves. v l In front ofithe control cylinder 1 is a single vertical valve which functions as a cylinder control valve and controls the pressure and exhaust to and from both ends of the cylinder 1. This cylindercontrol valve is shown in detail in Figures'l', 8, and f9, and

its position in relation to all the other parts, aswell as themethod of its support is fully seen in Figures 1, 2, and 3. It comprises" a cylindrical casin'g 6, provided with an upper head 53, consisting of a screw plug, and a lower head conslst-lng of a screw plug 55, which forms a bearing for the verticallymov-abrle valve rod 9, which is properly packed-to prevent leakage, the packing be ing held in place by the screw-cover 5d.

Thiscasing J6 issuitably supported on the frame of cylinder 1, the castings for all these members being properly related and inter boltedor o-therwiseengaged with each other to give a firm and durable support. the'body of casing 6 is a cylindrical. lining sleeve 450, which has a lower series of h-ori zon-tal ports 43 yandan upper series of hori- Inside zonta'lports 1-4. The ports 4-3 open into a circular port 52 in wall of acasingti, which port '52 is in communication with a long straight port 42 that runs throught hc' wall of the valve casing and the cylinder and i her 7. T Vii-thin the stationary ported sleeve 40 the vertically movable valve proper which has a hollow interior chamber 18, and is made integralfwith a valve rod 9 that pro jects through the bearing on the lower casi 11g head 55, and is connected With'members outside the valve mechanism for the operation'of thelatter. The interior chamber 1'' of the casing 6 is in communication with the interior of sleeve and the interior bore 48 of valve 47, and the interior chamber 7 receives air or steam pressure through a central passage in the casing head 53 to which is coupled-air or fluid pressure pipe 8, running from some source of fluid pres-1 sure. The interior space 48 of valve 47 provided withpol'ts 49 that open into chamber 7 when valve 47 is in its lower position. ,Further valve 47 is provided with a central portion of reduced outside diameter to furnish an annular .port 50 around the valveand between it and the contiguous-wall of the sleeve40. Annular port 50 when the vvalve is in its upperp0sition conuectsports 44'with a central exhaustfport. invthe sleeve 40, which port. or ports delivers ex haust fluid pressure into an outlet pipe 46 that is screwed into the wall of easing 6. And when the valve 47 is in" its lower position asshown in Figure 9 the port connects ports 43 with enhaust port 45. In one after doing its work. that valve 47 is of the balanced pistontype,

case the pressure in cylinder chamber 3 is exhausted to atmosphere afterdomg its workg'in the other case the pressure in cyl.

inder'c-ha'mber 3 isexhausted to atmosphere between the pressure in the two chambers 7 and 7. i

The receiver head B may have any desired form, size and shape, so that it may be con venient for disposing thereon and therewith many of the features of my invention.

Thus it has a protuberant front portion 35 surrounding achamber which a part of the receiver, see Figure 3, and connects there with through an opening, which accommodates the movement'of a rearwardly extend- *ing rod 39 which carries a float 'G so that asthe float rises and-falls due to the change of the water level itwvill move the rod 39 up and down.

zontal pin 34 in the lower end of a vertical rodlO carried in a vertical bearing 36 in the This rod '10 is.

front part of member 35. I aligned with the control valve stem 9,- and is preferably fastened thereto by meansof apin 56 or some other device, so that the rods 9 and 10 may move 1n unison as a s ngle rod. By using a float for actuating the control valve, it will be noted-that when the.

receiver A isentirely full of water the con trol valve 47 will be brought down by rod 39 and connecting rods 9 and 10 to its lower most position, as shown in Figure 9.

The essential features of the whole operation ofv the improved receiver pump Wlll now be quite evident with a little further explanation. hen the tank is full of water and the float device has operatedthe control It will be understood valve by pulling it down the effect of, such.

movement of the valve will be to uncover ports 44 and permit the-air or otherfluid from. its seat 14 and permit high pressure steam to flow through the opening belowv valve 13 and immediately rush by way of portal into long port I) and: then through ports "E and ll into. receiver A on top of the water which completely fills-the same.

At the same time that .the piston rod 4 rocks bell crank 26 to open the steam supply ralve t-he piston rod.4 will rock bell. crank 26" to force down valve rod'15 and apply vent valve 13 to its seat/14*, so that at this .moment there. can be no' venting of the steam, for obviouslysteam will also fill the long port Cand the port a and chamber 19* and be in readiness to pass the'valve edge 25" the movement it isreleased from the" valve seat 14*, but of course as long as valve edge 25 clamps down tight on seat 14 steam can not vent through this valve. 4 So long the high pressure steam isacting on the contents of the receiver A to expel the same the vent valve will remain tightly closed and the steam supply valve will 'remain fully open. But as soon as all the water has been expelled from receiver A it is necessary to get rid of the steam therein so that it can again fill with water. VVhile the Water level in the receiver has been dropping the float has been dropping with it and this has been causing the control valve 47 to. rise, and when the receiver is entirely emptyand the float is .on-the bot- 3 ,tom, the valve 47 will he in its top position,

see Figure 2, when the port 41 and port 51 aremconnected through ports 44 and annular port 50 with exhaust" 46 to-allow exhaust from cylinder chamber3, while the pressure inside chamber 48 in valve. 47 is allowed to pass through ports 49-and ports 43 into circular port 52 and straight port 42 into cylinder chamber 3 and cause a reverse movement of piston rods 4 and 4 rockingthe belleranks 526 and 26 reversely and closing the steam inlet port and opening the steam vent port, so that all the steam in receiver A is promptly disposed of into the atmosphere. regularly in automatic alternation.

InFigureslO andll I have shown an alternative form of the pressure-control These operations progress valve which admits pressure to the control.

cylinder 1' to act against piston 2. Figure 10 is a vertical section of this alternative form of pressure-control valve when in the tank-fillingv position; and; Figure 11 is a section: on? the same when in the discharging position. v

There are eases where the condensate or other material which flows into the tank A moves very slowly or sluggishl-y, as it is; heavy or thick or for some other cause has" a! slow movement, so that the valve 47 has a correspondingly slow movement. This makes the movement of the float G unsteady, due to the" agitation of the eenden sate in the receiver.- trol valve were like that shown in Figures 1, 2,. 8,- and 9 where the valve rod 9 isrigidly attached to the valve body 47, the said valve 7 wi l l open theports slightly", then close the same again, and this actionwill? force piston: 2 part of its travel, and" when: val ve t'lcloses ports M again the pistom 2 will return to its former position,- due to the pressure on itsopposite" si'defi f there is any leakage by piston 2.

So in order to overcome this? objection to the wonking' of the control valve-I have devised an alternate form adapted for certain cases, a nd show m in- Figures 10' and and: having as leading featurea valve 47* which is separated from its? stemQQ"; This. valve 41? has a central passage 65- to loosely receive the upper section 64A of the valve: stem 9, whichsection 64 hasa' top" collar 62 provided with. perforation 63,

while the stem 9 has the part adjacent to the lower end of section 64: providedwith a" 1pev'fonations" e" also pro- I fixedcollar 61 provided with 66: The: valve body 47 ma vided with anumber. of small longitudihal passages adjacent to the valve stem section'- I 6 in forthe' flow oi pressure;

In thismodified or alternative: form of the pressure-control valve, designed to meet: special conditions, I- eniplby the same cas ing' 6 as before, containing fixed sleeve 40 with upper. ports: 44, entering circular port 51, whicliconnectswith straightport ll nunning tocylinder 1. and delivering pressure on one side. of the piston 2, and: lower ports 43] and oiroularfpont 52rconnecting with stnai'ght: port 42' running? to cylinder. 11 and delivering on thevother sidev of the piston- 2, while there is the exhaust pipe 46, and exhaust port or portsi 5 connected withthe p0l tsl'43 atone time: by annular port oni the outside of valve 471 said exhaust outlet being; connected at another time with the P01133344 hy the annular port- 60.

The: valve body 47 is}. substantially like.

the valve body 47, in. that. it performs sub.--

stantially' the same functions; and is only modified as explained to allow the valve 'stem\ to be movably connected therewith,. so

that the stern of -the; valve will: have" a: longer travel? than the valve. 7

Below valve 47f is? the chamber 1, and. above: itissthechamhen'7; D ll-lflngiftlle movement of the valve stem 9 and it will" to pass hem chamber 7,1wh'eri collar 62 is} It the pressure con closed down on top of the valve, and then;

be ea that when it deseends the top (seller- T 62 will come into contact with 'topot valve t? and pull the valve down; and when t h stem ascendsthe lower collar 61 will strike the bottoniof valve 47 and lift same.- But the valvestem has acertain. amount of free-movement without engaging'the valve so as to change its position-Q i i r The ports 63 inolla-r 6 2 anew" pressure" through passage tfi around sweet and ont into the lower chamber 7 or if thedow'e'r' collar 61 is closed against the bottom of the-- valve pressure can passfthrougl-ivthe ports 66'frontpassageieintochambetl i Therefore it will beapparent that, the operation with certain kinds of condensate or othe'r'liquids', ifthe float G its upward' travehdn n ing the fillingop'erat'ion, shoul'clt 8'5 for instance; actuate" the valve fl so. asto.

open the ports 44:, as in" Figure 1 1 midthen due to the agitation of tile liquidtthe' float; G should drop back slightly;- it will not act upon: the valveA I- as'the' stem 9* is not fixedly attached thereto;- but" the separable connection will allow the float to move teak while thevalve wi1 1, stay in open position due to the clearance 'betweencollai 62 and valve 47; so that piston 2 will not be interfered with but w-i ll he allowed to make-itsfull travela val ve vsten'r willtake plaeevvhen the-'- valve, is'in eertain other" positions; Without int'er*- feii ng with-the valveitself, and thus the piston 2 is allowed to follow its regular A similar relative action of the course to th'e en'd of itstravel on each Inovement;

Thus I show two forms} of the pressure: control valve which introduces pressuiie) into the" cylinder 1 to move the piston therein one way or the other; @ther' forms may ohv-i ously be devised and" used for the same 1 pur pose. In some? casesa: slide val e'may be utilized. Hence I reserve the liberty of varying and changing "man yot the details of my invention within the scope of the claims; 7

1 1.111 an automatic receiver" pump of the classdescribed; the combination of li uidholding tank" having an inlet and outlet,- a

control cylinder and its piston, ta-buoyant meniiber' intlie tank; a balanced pi'ston pres sure-control valve for-- said cylinder and piston, means whereby the buoyant member positively and automatically actuates said balanced istonpressure-controlvalve means comprising a casinghaving-ports running from the pressure-control valve to opposite ends of the cylinder whereby pressure may be: suppliedby" the valveto opposite sides of cylinder, a steam inlet valve for the tank} anda steam outlet valve for the tank, both Controlling a common passage into the tank, and connections between the aforesaid con trol piston and the steam inlet and outlet valves, so'that when the piston is actuated,

in one direction the inlet valve will be opened and the outlet valve closed, and when the piston is actuated in the opposite direction ,the inlet valve will be closed and theoutlet valve opened. v

;2. Inan automatic receiver pump of the olassndescribed, the combination of a'liquidholding tank having an inlet and outlet, a control cylinder and its piston, a buoyant member in the tank, a balanced piston pressure-control valve-1nechanism for said cylinder and piston, said valve mechanism oom- 1 prising a casing having ports running to opposite ends of the control cylinder to chambers in said casing above and below thehollow piston so that it may pass through the sleeve ports and into. the ports running to-the control cylinder, means whereby the buoyant member positively andautomatically actuates the piston member of tl1e balanced mechanism, a steam inlet valve for .the tank piston pressure-control valve and a steam out-let valve for the tank, both controlling a common passage into the :tank,

and connections between theyaforesaid control pistonand the steam inlet andfloutlet valves, so that whenthe piston is actuated in one direction the inlet valve will'be' opened and the-outlet valveclosed, and when the piston is actuated inthe opposite direction the inlet valve will be closed and the outlet valve opened. y

3.In an automatic recelver pump of the class described, the combinationof a liquid.- holding tank having an inlet and outlet, a

control cylinder and its piston, a buoyant member in the tank, a balanced piston pres- I sure control valve mechanism for said. cyl inder and piston, said valve mechanism comprising a casing having ports runningtoy opposite ends of the control cylinderto supply pressure to oppositesides of the pistonin said cylinder and having alsoan exhaust outlet together with :circular ports merging into the ports, leading tothe control cylinder, a stationary sleeve held in said casing and having series of ports entering the circular ports, a hollow piston open at one end and provided with portsnear the other end and; alsowith an external annular port which at rods and engaging the two movement; 1

times connects the exhaust outlet with one or r the other series of ports in the sleeve, means, for supplying pressure to chambers in said casing above and below the hollowpiston so itmay pass through one or the other series of ports to the control cylinder, meanswhereby the buoyant member positively and automatically actuates the piston member'of the balanced-piston pressure-control valve In'echanisn'i, a steam inlet valve for, the tank and a steam outlet valve for the tank, both, controlling a common entrance into the tank, and connections between the aforesaid control piston and the steam inlet and outlet. valves, so that when the piston is actuated in one direction the inlet valve will be opened andthe outlet valve closed, and when the piston is actuated inthe opposite direction the inlet valve will be closed and the outlet valve opened. 7 Y

class described, the combination of a liquidholding tank having an inlet and outlet, a control cylinder and its piston, a buoyant member in the tank, a pressure-control valve mechanism for said cylinder and piston, comprising a casing having ports running to opposite ends of the control cylinder vto ,85' 4:. In an automatic receiver pump of the I supply pressure to opposite sides of the pis v ton-in said cylinder, and. having also an ex 'haust outlettogether with circular ports merging into the ports leading. to the control cylinder, a stationary sleeve held in said casing and having two series of ports entering the oiroular ports, a hollow piston movable up and down in the sleeve and open at the top and provided with ports near the ,bottom end, said piston having also an external annular port to connect the ports with the exhaust outlet, and having also aistem,

means connecting the buoyant member with 1 the said stem of the piston member so as to automatlcally move the same up and down, steam inletand outlet valvesfor the tank,

andconnections between the same and the control piston in the control cylinder.

5. In an automatic receiver pump, the

combination of a liquid holding tank having an inlet and outlet, a control cylinder and its piston, the latter provided with rods extending in opposite d1rect1ons,-a buoyant memher, in the tank, a pressure-control valve mechanism for said cylinder and piston,

comprising a casing having ports running to opposite ends of the controlicylinder vto supply: pressure to'opposite sides of the piston, an exhaust outlet for said cylinder, a

hollow inner'piston member .having'an ex.-

ternal annular port'and provided with stem, means connecting the buoyantmember with saidsstem, steam inlet and outlet valves for the tank, the same havingvstems, bellcrank levers; actuated by'the' control piston steam valves for posi- M570; res.

6 li'n an. ,aintomatictreceiver pump; of the.

a class. described, the. combination or. a liquid holdingv tank having an inlet, and". outlet, a. controlpistom and; cylinder, the. piston being: provided. with rods: extending in. opposite.

directions, a buoyant. member in. the. tank, a.

tan: and; having one1arm. engaging one of the. control piston. rods and. the; other arini engaging the slot in. the valve. stem; and,

Working against the, yielding pin in closing the valrve soles to: properly-seat the. same.

7. In an automatic receiver pun-1p of. the class. described, the combination; of a liquid holding tank having aninletand outlet, a head. forsaid.tankprovided' with. a pair of ports merging together at a common opening;

into the. tanlgi one' port being for high pressure steam and: the other for exhaust. steam, asteam valve. arranged, tov deliver steaintoits port, a. vent. valve? arranged toreceive steam fromits port, a control cylinder and its piston therein, the latter having oppositely-projecting piston rods, connectionsbetween said rods and the steam and vent valves; so. that the movement of the piston one way or the other. may impantv a joint movement; to

the valves, opening one simultaneously with:

closing theother, abalanced piston: pressure controlfivallve tor delivering pressure to: op, posite-sides of the control. piston, an: exhaust outlet for the control cylinder, 2; float in: the

=tank, and: connections between the. float and thevalve whereby the latter is automatically actuated. i

8. In an automatic receiver pump ofthe class described, the combination-01E a liquid holding tank having an inlet and outlet, a headi ion said tank having a pair of ports merging together at a common opening into the tank, one port being to convey steam to the tank and the other being to vent it from the tank, a steam valve arranged to deliver live steam to the port through an inlet port, a vent valve arranged to allow steam to vent from its port through an outlet port, a control cylinder and its piston therein, the latter having opposite piston rods, connections between said rods and the steam and .vent valves, including bell crank'levers and valve stems all interpivoted With the piston rods for joint operation, a balanced piston pressure control valve for delivering pressure to opposite sides of the control and exhausting it therefrom, a float in the tank, and means connecting trol valve.

9.. In an automatic receiver; pump of the class; described, the combination oii a liquid holding tank, having inlet: and an: outlet, a. control cylindenand its piston, the latter. havthe floatand the pressure con:-

ing opposite: rods, av main. control: valve. for

admitting: pressure to; move the control pistoni one: way or the; other, an. exhaust, outlet. for the control cylinder. means connecting the a valve for admitting high pnessure Sllfiflll'll. tothe, tank, a. vent, valve: for disposing of the.

a float the. tank, oat with main) control valve to actuate the; same, a. steam steam. after doing its; work thetank, said;

valves each having casing, a; valve: rod provided with a. relief valve member thereon and also having; a Winged section. supporting.

centrally a. loose; main valve member which I controls a. seat, and. connections whereby the said. valves are positively actuated" by the. movement of the. controt. piston.

10. In an automatic. receiver pump of the. I

class described, the combination. of a. liquid: holding tank, having an inlet and. an: outlet, a. control: cylinder and. itSpiStOHg. the: Latte-n having opposite. rods, a main: control valve for admitting pressure: to move the: control piston one; way or the. other, an exhaust outlet. for the oonltrol cylinder, afloatin. the tanln. means; connecting: the 'float with the main control. valve; to reciprocate same, zit-steam.

Valve for live steam controlling a. port to thetank, a; vent valve. for exhausting steam: and:

controlling aportif'romi the tank, botliof saidi ports being in communication with each:

other and with the same entrance into the tank, said valves. each: having a casing, a valverod liaving an: outwardly projecting slotted end and being: provided: Within the casing with a relief valve member and also: a winged; section passing centrally through a loose main valve member which. controls a main seat, said main val'vememberand the reliefi valve having a range oii relative movement, and connections between the. valve rods and thecontrol P1813011, rods consistingoii piv oted: bellcrank levers pivotally connected to the piston rods and loosely engaging the slotted ends of the valve rods," so the steam and vent valves may be positively actuated by the movement of the control piston.

11. In an automatic receiver pump, the combination of a liquid holding tank having an inlet and outlet, a control cylinder and its piston, the latter provided with rods extending in opposite directions, a buoyant member in the tank, a pressure-control valve mechanism for said cylinder and piston, com- 7 prising a casing having ports running to opposite ends of the control cylinder to supply pressure to opposite sides of the piston, an exhaust outlet for said control cylinder,

a piston .memberhaving an external annular P port and-a central passage and a'stem, passing loosely through said valve and provided with a perforatedco-llar above the valve and another below the valve, so that the valve and its stem'may have a relative play,:means connecting the buoyant member with said stem, steam inlet and outlet valves for the tank, the same having stems, bell-crank head forsaid tank provided with apair of orts mer -in -to 'ether at a common 0 Jenni b b b b into the tank, one port being for high pressure steam andthe other for exhauststeam, a

steam valve arranged to deliversteam to its port, a vent valve arranged to receive steam from its port, a control cylinder and its piston therein the latter having oppositelyprO ectingpiston rods, CODDGCUOIIS between.

said rods and the steam. and vent valves so that the movement ofthe piston one way or the other may impart a omt'movement to a the valves, opening one simultaneously with closing the other, a balanced piston pressure control valve for delivering pressure to 0pposite sidesof the control piston, an exhaust outlet for the control cylinder said valve ineluding a piston member proper and aetem loosely connected therewith and having a longer travel than the piston member, a float I in the tank, and connections between the float and the valve whereby the latter-is an p -'tank;'-both controllmga common-passage intomatically actuated. r

, v13. In an automatic recei the tank, a steam valve arranged to deliver live steam to the port through an inlet port.

a vent valve'arranged to allow steam to vent from its )ort throu h an outlet ort a 0011- b I a and .engaging the steam valves forpositive ver pump of the class described, the combination of a liquid trol cylinder and its pistonthere'in, the latter I having opposite piston rods, connections between said rods and the steam and vent valves, including bellacrank 'leversandvalve stems all interpivoted with the piston'rods for joint operation, a balanced piston pressure :controlvalve for delivering pressure to opposite sides of the control and exhausting it therefrom, said control valve including a piston'member having anannular port and a centralpassage, and astem loose in said passage and provided with perforated collars above and below the piston member, a float in thetank, and means connecting the'float and the pressure 'control' valve.

141-. In anautomaticreceiver pump of the class described, the combination of a liquidholding tank hav ng an inlet and outlet, a

control cylinder andv its piston, a buoyant,

member in the tank, a. balanced piston pressure-control valve for-said cylinder and piston, said valve having a'piston member provided wlthan annular port and a central passage, and a valve, stem passing loosely callyactuates said balanced piston pressure control valve, means running from the pres sure-control valve to theopposite ends of the cylinder whereby pressure may be supplied by the valve to opposite sides ofthe piston and exhausted therefrom, a steam'inlet valve for the tank and asteam'outlet valve for the to the tank, and connections between the I aforesaid control piston and the steam inlet and outlet valves, so that when the piston actuated in one direction the inlet valve signature. HOVVABD SHORTT.

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