US288384A

US288384A - Steam -pump

Info

Publication number: US288384A
Authority: US
Publication date: 1883-11-13
Anticipated expiration: 1900-11-13

Description

(No Model.) `2 sheets-sheet 1.

` B. C.VA NDUZEN. 8

STEAM PUMP. I

No. 288,884. A v Patented Nov. 18,1888.

mmsx. y@ wmow a' @Mi n. PETERS, Phmmnggnphu. wnhnmnn. o. c.

2 Sheets-Sheet 2.

STEAM PUMP.

(Remodel.) l

B. C. VANDUZEN.

UNITED STATES PATENT OFFICE.

BENJAMINC.. VANDUZEN, OF CINCINNATI, OHIO` .STEAM-PUMP. up

SPECIFICATION forming part of Letters Patent No. 288,384, dated November 1Q, 1883.

Application filed March 3', 1883. (No model.)

To @ZZ whom t may concern: t

l Be itknown that I, BENJAMIN C. VANDU- ZEN, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Steam-Pumps, of whichthe following is a specication.

My invention relates to that class of pumps in which the pressure of steam is employed to force the water or other liquid out of the pump, and in which a vacuum causedby the condensation of the dead steammay, when desired, be employed to draw the water or other liquidinto the pump.

My invention is applicable to all the purposes of a steam-pump, but is also equally applicable for use as a boilerfeeder for keeping steam-boilers supplied with water.

My invention, in general, consists of one or more pump-chambers of, any suitableshape, communicating` on the one hand with asteamvalve and on the other hand with passages suitably controlled by valves, for allowing the liquid to enter this chamber or chambers and pass out therefrom, this chamber or chambers communicating lwith a cylinder containing` a piston, and suitable mechanism being applied between the steam-valve and said cylinder and piston, and in connection therewith, whereby thepressure of uuid in the cylinder will operate the steam-valve, and whereby,in the manner hereinafter more particularly described, the uuid in the cylinder, which is receivedin one end of `the latter from apump-chamber, is i discharged backinto the same chamber from which it rst came, either by the passage through which it first entered the cylinder from the chamber, or by another passage,or through both of passages at once. The obj ect of a said second passage is, when present, to convey liquid into the upperportiouof the chamber to condense the steam in the latter, and thus cause a vacuum to enable the'pump to lift its fluid.` j i Anotherfeature of my invention is a screen of novel formation for preventing the lsteam which is to enter the pump-chambers from passing toorapidly down onto the wateror other liquid in said chamber, and thereb causing such an agitation of' the said' liquid as would condense the steam and prevent the said steam fromacting upon the liquid till the latter is allheated, and this screen, beinghcaty ed by the said steam passing through it after the liquid has been ejected therefrom, not only enables the steam entering the chamber to act immediately upon the liquid therein, but also heats the surface of said liquid as it rises through the screen to the steam-valve, (after the steam has been condensed in or has escaped from the upper part of said chamben) and this contact of said liquid with said heated screen causes that part of the liquid which subsequently meets the incoming steam when the valveis opened to be hot, and consequently said liquid will not condense said steam, but will permit the latter (without the delay consequent upon condensation of the first por-l tion of said incoming steam) to act directly and with immediate effect upon said liquid and force the latter out of said chamber.

dAnother feature of my invention consists in the combination of said screen with a novel formation of `that' portion of the chamber or passage communicating therewith in which the screen maybe placed, whereby the space between the inner side of the said chamber or passage and the screen shall be thin, for the purpose of Vmore fully effecting the advantages set forth in connection with the preceding feature of myinvention. q y i `Another feature of my invention consists in means for positively moving the steam-valve by the direct pressure of the fluid inthe pumpchamb 2r, and holding the valve in place until again'inoved` positivelythrough the agency of the cylinder and its piston, no matter what the varying pressure of steam may be upon the valve or in the chamber.

Another feature of my invention consists in means for compelling a portion of the fluid discharged from the chamber to begin to operate the steam-valve when the device for operating the valve, and which is operated by the fluid from the chamber, has nearly completed its movement7 and shall then, by the remainder of its movement7 cause the valve to be instantlyoperated, for the purpose of enabling, the movements of the said lpump `to be the better controlled.`

, Another feature of my invention consists of a preferred form of device for enabling the valve to pass its center without fail.

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Another feature of my invention consists of a novel means for regulating the amount of iluid received into and discharged from the piston-cylinder, and thereby regulating the rapidity of the movement of the pump.

Another feature of my invention consists in forming the openings from the valve-chest into the passages communicating with the chambers in such a manner that whenV one of the said openings is open and the steam begins to flow through the same it will strike only a small or thin edge of water standing in said opening and instantly heat the same, and hence not be condensed, and will therefore act immediately in driving back the fluid through the passage communicating with said opening.

Other features of my invention and the several advantages resulting from the use of one or more of them will be fully apparent from the following description:

Vhile the various devices essential to my invention may be variously located in relation to one another, the preferable arrangement of thevse portions will now be shown and described as follo ws:

Referring to the drawings forming part of this specification. Figure l, Sheet l, is an elcvation, partly in section, of my invention, the section being taken on a vertical plane indicated by fhe line a@ on Fig. 2. Fig. 2 is a vertical sectional elevation, the section being taken at the line y y of Fig. 1. Fig. 3 is a detailed View of a portion of the valve-operating mechanism. Fig. 4, Sheet 2, is a sectional plan view of the parts below a plane indicated by the arrows x x'of Fig. l. Fig. 5 is-an enlarged horizontal sectional view, the section being taken at a plane indicated by the arrows g] y of Fig. 2. Fig. 6 is an enlarged sectional elevation, the section being taken at the line .a z of Fig. 2.

rllhe valves for controlling the ingress of liquid into the chambers and the egress of liquid therefrom are located in a valve-box, as A2. This box A2 is divided by a longitudinal partition, a, into two side chambers, a a2, with which chambers the chambers A A respectively communicate th rough openingsa. (SeeFi g. 2. At one end of the chambers a a2 is a transverse chamber, B, extending continuously from side to side beneath the two receiving-valves b b2, and being separated from the chambers a a2 by the angular partition or box b. The inlet or supply pipe C communicates with this transverse chamber B. At each end of this transverse chamber YB are the openings B B2, communicating, respectively, with the longitudinal chambers a a2, and these openings are controlled by the valves b b2, which are so constructed and arranged as to permit the water entering the chamber B through the supply-pipe C to pass into the chambers a or a2, but prevent any return of the water from said `last-named chambers into the chamber B.

The preferred form of valve and support for the sameis that shown in the drawings, and is as follows: Inthe openings B B2 are placed the e @saen rings D D, which rings are secured in said openings either by being screwed or driven tightly therein, and to the lower edges of these rings are connected the yokes or webs d d. In the top of the box A2, at points directly over the openings B B2, are formed the openings d2 d3, which openings are of sufficient diameter tofpermit the rings D D to bepassed through them to be inserted into the openings B B2. In these openings cl2 d2 are secured the caps D2 D2, in the lower faces of which caps are formed the guides d"t d5, to hold in place and guide the top of the valve.

The valves bb2 are connected, respectively, to the valve-stems b3 b4, the lower ends of which stems pass, respectively. through the webs d d of the rings D D', and the upper ends of said stems rest in the guidesd4 di of the caps D2 D2. The upper edges of the win gs D D form the valve-seats for the valves b b2.l The valve-stems b3 b'L are capable of moving up and down in the webs d d and guides dL d5, and the openings B B2 may thus be open or closed.

ln that portion of thev box A2 which is opposite to the chamber B is atransverse chamber, E, (see Fig. 2,) extending continuously from side to side of the box A2, which chamber is separated from the chambers c a2 by the angular partition or box e. This cham ber E is similar to the chamber B, located at the opposite end of thebox A2, excepting that the latter is located at the bottom of the box, the chamber E being at the top; and the function of the chamber B is to admit water into the chambers a a2, and the function of chamber E is to receive the water from said chambers a a2 and to discharge it through the outlet-pipe C. rlhe chamber E communicates with the chamber a a2, through openings E E2, which openings are controlled by valves e e2, which valves are so constructed and arranged as to permit the water to pass from the chambers c a2 into the chamber E and prevent any return of the water from said chamber E back into the chambers a a2.

The construction and arrangement of the valves c e2 and their connections and supports are jin all respects preferably similar to the valves b b2 and their connections and supports, and it is therefore unnecessary to enter into a minute description of these valves e e2.

The chambers A A are preferably construct- 'ed in a cylindrical form, as shown, and upright, and these chambers A A preferably rest upon the box A2, the lower ends of said cylinders being provided with the iiange-lugs A4, by which the chambers are secured to the top of the box A2, a suitable packing being interposed between said chambers and the box A2. These chambers A A may be formed together, as shown; or, if preferred, they may be separate and independent of each other. The upper ends of these chambers A A are preferably conical inform, and are connected to the valve-chest (see Figs. l, 2, and 6) by branches F F2, the valve-chest branches and IOO IIO

assess thelangesj'j", forming the upper ends `-ofthe chambers, being preferably all formedinfone piece. Thebranches F Fz are -providedwikth the passages f2`f3, `which communicate ywith the interior of the valvel chest F, `and `extend through the flanges ff', and open intothe'upper'ends of the chambersA A', as shown in Fig. 6. This 'valve-chest F isprovided with a steam-inlet pipe,iF3, and an exhaust-pipe, F.` i Within the valve-chest F is located an oscil- Vlat'ing valve, G. "Ihis valve G consists (see Figs. 5 and 6) of the two end fianges or disks,

g, circular in form, and of a diameter equal to b b g...

"centers of thesewings g2 is exactly equal to the distance between the centers of the openthe diameter of the valve-chest F, which flanges areconnectedby thebox g', which is open at theitop, as shown in Fig. 6. This box g is smaller than the diameter of the iianges g,and does not therefore come in contact with the interior of the valve-chest F, except at the lower corners, at which points the boxis extended by wings g2, which wings `are at all times in contact with the interior of the valvechest F,and below these wings g2 is therefore formed an exhaust-chamber, G, which hasino communication with the space above the` wings The distance Ibetween the longitudinal ings g5 of the passages f2 f2 of thebranches to uncover one of the openings g3 the other will also beopened, and that when one of the openings g? communicates withthe'exhaustspace G the otheropening giwillcommunieate with the space above the wings tr/2 for which reason, when steam `is introduced into thevalvechest F, the instant that the valve is turned so J that the steam beginsto enter oneof the openf ings g5 exh aust-steam will beginto escape from `the other opening g? into the exhaust-space G.

fromwh ence it will escape th rough the exhaust'- pipe F4, so thatwhile steam is passing through the passage f2 to the chamber A the exhauststeam from the chamber A is passing out of said chamber `through the passage f5, and vice versa. Afterthe valve G-has been placed in position in `the valve-chest F, the `latter is" closed `by any suitable means-as, for ex.-

ample, bya cap, G2, (see Fig. 5,) which latter is `secured to` the valve-chest by a suitable fastening-as,` for example, bolts G5, passing through-said cap and being screwed into lugs G4, cast on the sides ofthe valve-chest,

`Suitable `packing being placedv between said cap and the valve-chest, no steam can escape between the cap andthe valve-chest. The side or end ofthe valve-chest F which is opposite block. The valve-stem H, excepting thehead h, is cylindrical. i

The means which I employ for rotating the valve-stem H, and through it the valve G, are as follows: Around the extension `G of the valve-chestF fits the hub h oi' the crank-cam H, which latter has an extension or arm, H2, and secured nearithe end of this arm H2 is a crank-pin, h2, projecting from that side of the crank-cam which is-away from the valve-chest F. The projection or neck G5 of the valvechest forms abearing, around which the crankcam H oscillates. The face h5 of the crankcam is provided with anotchor recess, Hthe depth of this recess being such thatwhen the crank-cam is in position on the neck G5 the end of said neck will reach to the bottom of the recess. After the crank-camH has been placed' in position on the neck G5, a sleeve, I, is placed on thevalve-stem H, one end of said sleeve resting against the end of the neck G5andiagainst the bottom ofthe recess H3 in the crank-cani H, thus holding the latter in position on the neck G5, the sleeve being retained in position by a pin I', passed through said sleeve, and through the valve-stem H, and through the washer I5.

`The sleeve I is provided at that end which is against `the end of the neck G5 with a lug -or wingl2, which rests in the recess Hi in the 'crank-cam rIhe periphery of this wing is circular, and is coincident with the periphery of the hub iof the crank-cam. The thickness of this wing I2 is'equal to the depth of the recess H3, in which it rests; but its width is not quite so much as that of the recess H", which construction permits a slight amount of rotation of the crank-cam inieither direction before the sides of therecess will come in contact with vthe sidesof the wing I2. The

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purpose ci" this will be fully described when I` IIO in position.` In this extension J is formed a passage, J2, the upper end of whichpassage communicates with the-interior of the cylinder A5, opening into said cylinder at or near the bottomthereof, and the bottom of-saidu passage J2 communicates with a diagonal passage, j', formed in thetop of the box `A2, and

.communicating with the'interioi' of the chambeta2v of said box, as shown by dotted lines in lThe extension J projects beyond the rear face of the cylinder A, and is continuous with the-ridge J2 `formed on theside of the cylinder, and in this ridge J t and the projecting `with adiagonal passage, j, formed in the top `of the box A2, and communicating with the interior of the chamber c thereof, as shown by dotted lines in Fig. 1. These passages J2 and J2 are illustrated by dotted lines in Figs. 1 and 2, and are shown in section in Fig. 4.

In the extension J is located a check-valve or cock, K, which simultaneously controls the passage of fluidthrough both the passages J2 and J3, enabling the amount of fluid and the force with which the fluid enters the cylinder A2 to be regulated at will.

While I have described the passages J2 and J3 as being formed in the ridge J 2 and extension J. this being the preferred construction, it will be obvious that each of these passages may be in an independent pipe properly cony upperl end oi' said pipe L communicating with the interior of the chamber Avnear the upper end ofthe latter, a check-valve, Z, being present in said pipe to permit fluid to flow fromv said pipe into the chamber A, but prevent any return thereof. Above the check-val ve Z is a screw, Z', or equivalent device, by the aid of 1 which the valve may be set to regulate the amount of fluid to pass through the pipe L. The pipe L communicates at its lower end with the passage J2, emptying into the bottom of the cylinder A2, the upper end of said pipe L communicating with the interior of the chamber A" near the upper end of the latter, a check-valve, Z2, and a screw or device, Z2, similar to the valve Zand screw or device Z, being present in said pipe L'. The object of the pipes or conduits L L is to enable cold liquid to be forced (when so desired) directly from' the cylinder A3 into the upper portion of chamber A or A', as the case may be, and thus condense the steam in the upper part of said chamber to form a vacuum to work the pump.

To the upper end of the piston-rod K2 is i connected a yoke, K2, having a longitudinal opening, K", which, yoke is placed on the sleeve I on the valve-stem H, (see Fig. 5,) the sleeve passing through the opening K2 in said yoke. Lugs or prongs k2 k2 project from one side of the yoke K2, said lugs projecting in the same direction as the arm H2 of the crank-cam H', and projecting lfar enough to engage with the pin h2 in the end of said arm as the yoke K3 isr'aised and lowered. The yoke K2 is retainedin position on the sleeve I by a washer, I2, which washer is retained in position by the pin I', which latter passes through said washer, the sleeve I, and the valve-stem H. As the yoke K3 is raised or lowered, one of the lugsZc2 or 7a2 comes in contact with the pin h2 in the arm H2 of the crank-cam H and raises or lowers the end oi' this arm beyond the pivoted center of the cam, and any suitable spring is provided for moving the end of this arm H2 beyond the'point to which it is moved by the lugs k2 or k2. The preferred form of such spring is that shown in Fig. 1 of the drawings, and is as follows:y Abar-spring, M, is secured at one end to alug, in, formed on the outside of the chamber A', the other end of said spring being pivoted to one'end of a link, M', the other end of' said link being pivoted to the end ofthe arm H2 of `the crank-cam, referably by means of the pin h2. The ten ency of this spring Mis to constantly press toward the pivotal center of the crank-cam, forwhich reason, as soon as the connecting-point between the link M' and the arm H2 has passed the pivotal center of the crank-cam, either in an lupward or downward direction, the pressure ofthe spring M moves the end of this arm be-` yond this point. The amount of movement ofthe spring M, and consequently of the arm H2, is governed by a set-bolt, m', which is screwed through a lug, m2, formed at somey point on the outside of the chamber A',in such a position that the spring M, as it moves toward the chamber A', will strike against the end of this bolt, preventing any further movement of the spring.

If desired, a block of rubber or wood may be connected to the end of the bollini/,to deaden the sound of the springM striking againstV the bolt. This bolt may be advanced or re! tracted to regulate the amount of movement of the spring, which regulates the amount of os cillation of the valve G.

Asuitable escape-conduit, F2 communicates with the space G' of the valve, and through this escape passes the steam exhausted from either chamber. In this escape-pipe F'L is located a check-valve, F5, .which allows steam to pass out from either of the chambers AA' as they are respectively put into communication with said escape-pipe, and preventany return of fluid or air, Ste., when a vacuum is created in either of said chambers.

In connection with that part of' each chamber A and A' which communicates with the conduit to the valve-chamber is a screen, P, so located that the fluid or fluids passing through the said conduitto or from the cylinder must pass through the said screen. rIhis screen consists, in general, of au outer box, p, provided with perforations p', and'containing any suitable porous cellular or granulated substance-as, for example, wire gauze, sand, shot, 8va-which will, when'once heated by the steam passing for the iirst time,when the pump is started, through the conduit into the chamber, afterwardA heat the water or other liquid passing up from the chamber into said conduit to said valve-chamber, and thus prevent the live steam, when brought by the'ac- IOO IOS

tion of said valve into cont-act with said water v l i 285.384 i i f 5 said screen is made to `be in close proximity to theexteriorof said screen for the purpose of allowingonly athiu edge or layer of liquidgto be present around said screen. This thin layer of liquid is `more readily heatedby contact with the heated screen and the incoming live steam than a large quantity of liquid would be, and when the live steam enters thejchamber it acts upona hot layer of water distributed over-the top surface of ,the liquid in the chamber, and hence, not being chilled by the cool liquid below said hot layer,`it acts with force upon said liquid to drive it `from said chamber. The preferable form oi'` this space R between the screen and the chamber is asshown-viz., an annular space diminishing to a `knife-edge; and this form `of space is conveniently obtained by forming the interior of the cylinder in a cone shape, S.

\ I-will nowproceed to describe the mode. in which my invention operates, and while my pump will operate to handlevarious liquids, for convenience of illustrating Iwilldescribe its operation when employed to pump water.

Suppose both. chambers A aud A areiilled `with water and the piston K lof cylinder A3 to be `at the lower portion of its stroke, the end H* of the crank-cam. H will be at the bottom of its stroke and the lug k2 ofthe yoke Kthe length of the stroke below it. The valve G will be ina position such that the port g3 is uncovered, and the conduitf3 is put into communication with the live steam, and the` conduit f 2is put into communication with the steam-escape `pipe F". The live steam now first strikes against the thin edge or sinallisurface of'water at the entrance to conduit f3, and instantly heating it, withoutsensible condensation, forces this water down through the conduit and through the screen, at the saine time heating the latter, and alsoheatingthat small quantity of water which is in advance `of it and present in the ,screens The live steam, pressing forward, `occupies the screen, heats the thin layer of water in the space R at the sides of the, screen, and, not being able to pass out ofi the impervious bottom of the screen, passing out ofthe sides of the screen, forces downward the heated layer of water in space R, and this layer of heated water, spreading over the entire surface ofthe cool water below it inthe chamber, acts as a non-conducting wall between the steam above and the cold water below, and enables the live steam to act immediately, without condensation, and consequently effectually, upon the water beneath. The live steam forces the water out of chamber A', the water passingthrough orifice or.. conduit a3 into the receptacle a?, and thence, lifting valve e, passes into chamber E, and thence, through the discharge-pipe, communicating with the boiler or other receptacle which is to receive the water from this pump. .Aportionof the water at the saine time `passes from `receptacle a2 through pipe J intowthelower end of cylinder Aaand forces the piston therein` upward.` `The piston, by

fmeans of` itspiston-rod K2, elevates the yoke K3, and the lug k2 of said yoke actsA upon and carries upthe pin hthcreby moving the crankcam H and moving the valve, gradually closing the ports g3 g, and when the yoke hascarried the crank-cam H to the middle of the stroke of the latter the s'aid cam and arm M will assume the position shown in Fig. l, the spring M now exerting most powerful pressure against arm M. In bringing the cam Hand arm M to this position the pistonhas had to overcome the resistance of the spring M to the straightening of the toggle-j oint, -the elbowof which joint, whenthe yoke was at the bottom of its stroke, pointed downward toward the chain-bars. upward, and carries the end, of the arm H2 of the chambers H a little above the` horizontal plane passing through the axis of revolution of said cam, thus slightly breaking thetogglejoint upward, and instantly the pressure of the spring M, acting through one branch (viz .,arm M) of the said toggle-joint, forces the` elbow ofi the joint upward and bringsthe outer end of` arm"M nearer to the center of the` crankcam H. This sudden oscillation vof the crankcam carries up the valve tothe full extent of its oscillation or stroke, and thus reverses the position it occupied when the piston K was at the lower end of cylinderA3. The liv-e steam isnow shut oi from conduit f3 and admitted to conduit f2, leading to chambenA, and the conduit f 3 now communicates withthe` escape-pipe f1. The live steam forces the water down the conduit f" and through the screen P and out of chamber A in a manner similar to what it did when previously admitted `to, conduitf. The water, being forced out` of chamber A through its lower orifice, a, (see Fig. 4,) enters receptacle c', and thence, lifting valvee, passes into chamber E, and thence out the discharge-pipe C. Vhile the greater part of the water from chamber A is passing out the discharge-pipe C a lesser portion of this water passes through orifice lj,(see Fig. 1,) and thence through conduit J3 into the upper end of the cylinder A3 and above the piston 7c,andthere acts upon said piston,forc ing the latter down and carrying down with it the yoke K3. 'While thewater is being forced downand vout of chamber A the dead steam inchamber A has in part passed out of the escape-pipe` F: As the piston k begins to descend, as aforementioned, it forces the water. below it outof the cylinderA3 in `part back into chamber c2, and `forces another portion of said water through conduit L" and valve b2 intoV chamber A', there condensing what dead-steam has remained with said chamber A. This condensation of steam causes a vacuum in chamber A', and check-valve F on escape-pipe E4 closes and prevents any air or ifluid of any kind from entering the chamber A through said escape-pipe. Vhere the outer or discharge end of the escape-pipe F is immersed inwater or otherliquid, this check-valve can be dispensed with. This vacuum in chamber The piston continues to move` IOO IIO

` into chamber c2, and thence through orifice a3 water to ill it coming inlthrough supply-pipe K, provided with two openings to connect the y the wing must be traveled over as the arm H2 'been condensed in the said chamber by the vpressure of the spring or equivalent operating I, ,provided with lug or wing I2, resting in A causes a ow of water through supply-pipe l C into chamber B, thence through valve b2 into chamber A, and iills the chamber Al full, and a portion of said water which passes up through screen I is then heated and goes up conduit f3. to the valve. This chamber is now again ready to receive live steam from the steam-chest to empty said chamber, as first aforedescribed. The piston k continues to descend, and as the yoke K3 comes down its lug 7c3 comes in contact with the pin h2, and, over coming the resistance of spring M, straightens the toggle-joint, and then breaks' downward, whereupon the pressure of the spring M instantly carries the crank-arm Hdown and reverses the valve G in the steam-chest, and the live steam is now again admitted to chamber A', and empties it, as before mentioned. While chamber A is being emptied part of the dead steam in chamber A has escaped through escapepipe F* and the remainder has admission of water through pipe L, this lastnamed water being a part of the water which was in cylinder A;s above thepision K', and which is forced out \as piston K rises while chamber A is being emptied, and the remainder of the water in cylinder A3 above the said piston is forced backward into chamber a. Meanwhile chamber A is being filled by means of the vacuum formed' within it, the

Cv into chamber B, thence through valve b into chamber a', and thence through orifice c6" into said chamber A. This alternate action 0f the pump in alternately filling and emptying" the chambers is continued, and the water is continally taken up through supply-pipe C and-delivered through the discharge-pipe C.

In order to regulate the speed of the piston, and thus'regulate the speed of the valve, and consequently of the pump, I provide a suitable device for controlling the amount of fluid which-shall pass through the conduits .I2 and J 3. A preferred form of such device is shown in Figs. l and 2, and consists of the stop-cock said conduits J2 and J 3.

A preferred form of device for enabling the` valve to remain in the position which it occupies at the beginning ofthe stroke of the pis# ton-rod until the end of the crank-arm has been forced beyond the horizontal plane of the axis of revolution ofthe crank-cam, and until the device is enabled to be exerted to carry the cam-arm the remainder of its stroke, and at the same time to limit the stroke of the crankcam, is shown in Figs. 1, 3, and 5. This device consists, as aforementioned, of the sleeve the recess H3 in the crank-armi As the recess is wider than the wing I2, and the wing is connected to and works the valve, the space betweenthe edge of the recess andthe edge of -tion and force pump.

moves, before thearm HZ can act to move the valve. The outer end of the crank-arm H2 is therefore in advance of the valve, and as the' crank-arm H'ftravels it moves along, carrying with 1t ,the wing I2,- and .when the end of 'crankrevolution of the crank-cam and the togglejoint is slightly broken and is in position for the spring to take hold and break the joint still further, the valvehas just closed-both ports, and the pump would now stand on a varm H2 has passed the horizontal plane of in connection with the toggle-joint and the recessed crank-arm H2 and wing J2 to complete the breaking of the toggle-joint-as, for example. an loscillating weight properly applied, or a steam-piston, and the like.

In the operation of the pump, as aforementioned, the pump is a direct-acting steam-sucered into the inlet-pipe C under pressure,

:that feature of my invention which causes a suction in the chambers may be omitted, and

Vhere water is delivthen the pump becomes a direct-acting forcepump. For example, by shutting the valves Z Z2 in the conduits L and L', no-liquid can pass into the chambers from said conduits to condense the steam in said chambers, and the dead steam in the chamber will' be forced out by the water flowing in `through the bottom orice, c3, the chamber being iilled by the pressure of water through the inlet-pipe G.

In the mechanism as herein described the lugs 7c3 k3 of the yoke K3, in fact, strike against the boss oi' the arm M, which boss encircles the pin lr'. For convenience of description, the lugs k2 75 of the yoke K3 have been described as striking directly against the pin h2.

,Vhen the arm M is connected, as will be often the case, to a differentportion of the piu h2 `from that hence shown, or to a separate arm,

and the spring located in'another position, the

Vsaid lugs k2 k will directly impinge against said pin lz?.

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In place of a spring, as M', or equivalent of other form, there may be employed a bobweight or steam-pressure. When preferred, the cylinder Af may move and its piston be stationary; also, theposition of said cylinder cylinder A3 and its piston, steam, .or air, orl

other fluid may be employed for operating the same.

The various features of my invention are preferably employed together; but one Yor more of said features may be employed apart fromthe remainder, and one' or more of the i IO` 'pump,the combination of 'the two chambers `eases-r `7 plicable in connection with purposes other than that specifically herein described.

4lhat I claim as new and of my invention, and desire to secure by Letters Patent, is-` y 1. Ina direct-acting steam force-pump, the combination of the two chambers A `and A and a valve for alternately supplying said chambers with steamj, and means for compelling a portion of the fluid as' alternately dis,- charged from the chambers to operate the valve, and means for controlling the iiow and amount of such fluid operating the valve, substantially as and for the purposesspecicd.

2.` In a direct-acting steam force and vacuum AA', and a valve for alternately supplying said chambers with steam, and means for compeiling a portionfof the liquid Aas alternately ydischarged from the chambers to operate the valve, and afterward to condense the steam which previously discharged it`(said liquid) from said chamber," substantially as and for the purposes specied.

`3. In a direct-acting' steam force and vacuum pump, the combinationA of' the two chambers A A and a Valve for alternately supplying said chambers with steam, and means for compelling a portionof 'the liquid as alternately7 discharged from the chambers to operate `the valve, and afterward to condense the steam which previously discharged it from said chambers, andthe check-valve inthe exhaustpipe, substantiallyas for the purposes specified. Y y v "f 4.. In adirect-acting steam force and vacuum pump,`the combination of the `chambers A A anda valve for alternately supplying y said chambers with steam, and the double-acting `cylinder A3, providedwith pistonand conduits LL" and valves Z Z?, and suitable mechf anism "for enabling the fluid in the cylinder A3 to operate said valve, substantially as and for the purposes specified.

` 5. In a directlacting'steamforce Vand vacu- Vum pump, the combination of chambers, as A A', and a valve for inteilmittently supplying `said chambers with steam, and the doubleacting cylinder A3, provided with piston and conduits,` substantially as specied, for enabling the fluid in the cylinder and on one side of the piston to force the'fluid which is on the other side of the piston, andl which was re- Y oeived from the chamber A orA, back into the chamber `from which it was received, but through another,passageconnecting with said chamber at its upper part, for condensing the i `ing cylinder A3, provided with pistonand consaid features may `be"e`mployed, so If'aras apduits, substantially as specified, for enabling the fluid in the cylinder which is on one side of the piston to force the duid which is on the other side of the piston into the same chamber from which it was originally received, but

through another passage connecting with the upper part of said chamber, for condensing the steam in said chamber after said steam has done its work, and mechanism for enabling the fluid in the cylinderto operate said valve, substantially as and for the purposes specified.`

7. Ina direct-acting steam force and vacuum pump, the combination of a main chamber and a valve for intermittently supplying said chamber with steam, and the double-acting cylinder A3, provided with piston and conduits, substantially as specilied,fbrenabling the fluid inthe cylinder and on one side of the piston to i'orce the fluid which is on the other side of the piston, and which was received from the chamber, back into, the said chamber, but through another passage connecting with said chamber at its upper part, `for intermittently condensing the steam in said chamber, and thedevice for controlling the passage of iluid to and from the said cylinder, and mechanism for enabling the fluid in the cylinder to operate said valve, substantially as and for the purposes specified.

. 8. In combination, the chambers A A', provided with induction and eduction `valves, and the double-acting cylinder A3, andniechanism for enabling the fluid in the cylinder to alternately supply the chambers .A A with steam, substantially as and for the purposes specified. f

IOO

9. In combination, the chambers A-A, pro-` vided with induction and eduction valves, and the double-acting cylinder A3, and device for cont-rolling the passage of fluid toand from said cylinder, and mechanism for enabling the fluidin the cylinder to alternatelysupply the chambers A A with steam, substantially as and for the purposes specified.

10. In combination, the chambers A A and the cylinder A3, and a valve for alternately supplying said chambers A A with steam, and conduits J2 J3, oriiices j j, chambers a a2, valves b b2, chamber B, inlet-pipe G, orifices a3, valves e c2, chamber E, and discharge-'pipe C, and mechanism for enabling the fluid in cylinder A3 to operate-said valve, substantially as and for the purposes specied.

l1. VIn combination, the chambers A A and thecylinder A3 and a valve for alternately supplying said chambers A A with steam, and` conduits J2 J3, ccnduits'L L, valves ZlZ2, oriflces j j', chambers a al, valves b b3, chamber B, inlet-pipe C, orifices c3, valves c e2, cham- Vber E, and discharge-pipe C, and mechanism for enabling the iiuid in cylinder A3 to operate said valve, substantially as and for the purposes specied.

12, In combination, the chambers A A and the cylinder A3 and a valve for alternately supplying said chambers A A with steam, and canduits J l J3, stop-cock K, conduits L L', valves Z Z3, orifices j j', chambers c a, valves b b2, chamber B, inlet-pipe C, orifices a3,

"valves e c2, chamber E, and discharge-pipe and means for compelling a portion ofthe fluid discharged from the chamber to begin to operate the valve when the device for operating the valve, and which is operated by the liuid from the chamber, has nearly completed its movement, and shall then (by the remainder of its movement) cause the valve to be instantly operated, substantially as and for the purposes specified.-

14. In a direct-acting steam force-pump, the combination of a valve for alternately supplying chambers with steam for the expulsionof a liquid therefrom, and a wing, I2, and crankcam H', provided with recess H3, and means for enabling said crank-cam to be operated by the positive pressure of a portion of the liquid discharged from said chamber, and for operating said valve, substantially as and for the purposes specified.

15. In combination, the valve G, wing I2, crank-cam H, yoke K3, provided with lugs cL 7c3, pin h2, arm M, and spring M, substantially as and for the purposes specified.

16. In a direct-acting steam force-pump, a

. valve for supplying a chamberwith steam for portion of the said pump-chamber, and forming the only channel of communication between the chamber and theport, the space between the exterior of the screen and the interior surface ofthe chamber gradually diminishing upward to athin edge, substantially as and for the purposes speciied.

18. In combination, the valve having wings g2, ports g, conduits fzf, screens P, and conically-formed chambers A A', 'and exhaust-port Il, substantially as and for the purposes specified.

19. The combination of an oscillating valve and ports g3, conduits f2 f3, conically-formed chambers, screens located in the apex of said chambers, and exhaust-port F", substantially as and for the purposes specied. y

20. The combination of avalve and port g3, conduit f2, a screen, a main pump-chamber, and exhaust-port F4, substantially as and for the purposes specified.

21. The combination of a valve and ports g, conduits f2 f3, conicallyformed chambers, screens located in the apex of said chambers, and exhaust-port Ft, having check-'valve F5, substantially as and for the purposes specified. 22. In combination, the pipes L L', valves ZZ', main pump-chambers, and exhaust provided with check-valve F5, substantiallyas and for the purposes specilied.

23. The combination of the chambers A A', suitable eduotion and induction valves, oscillating steam-valve ports g3 g3, conduits fifa, and screens, substantially as and for the purposes specified.

24. The pump-chambers, with suitable induction and e'duction valves, piston-cylinder, with proper mechanism to operate steamvalve, in combination with avalve or cock to regulate the now of fluid into the cylinder, substantially as and for the purposes specified.

Y BENJAMIN C. VANDUZEN.

Witnesses:

W. W. CHAMBERLIN, J. WM. STREHLI.