US1102351A - Apparatus for discharging ashes, clinkers, or other refuse. - Google Patents

Description

. S. PARSONS.

APPARATUS EOE D ISGEARGING ASEES, GLINKERS, 0E OTHER REFUSE.

APILIOATION FILED FBB.3, 1913.

Patented July 7, 1914.

3 SHEETS-'SHEET '//Il/lll la up.

THE NORRIS PETERS CO.. PHOTO-LITHO.. WASHINGTON. D. C.

W. S. PARSONS.

APPARATUS FORDISGHARGING AsHBs, CLINKERS, 0R OTHER REFUSE.

APPLICATION FILED FEILS, 1913.

Patented July 7, 1914.

3 SHEETS-SHEET 2.

l I I I I I I I I I I I I I I I I I I I I I I I I ZID S E` THE NORRIS PETERS U04. PHOTLI'FHU., WASHINGTON. DI C W. S. PARSONS. APPARATUS FOR DISGHARGING AsHEs, GLINKERS, 0R OTHER REFUSE.

APPLICATION FILED FEB. 3, 1913.

1,102,351 Patented July 7, 1914.

3 SHEETSHSHBBT 3.

www# mw/aw @www @ww @f THE NORRIS PETERS C0. PII'IO-LITHO., WASHINGTON. D4 a WiTEDl STATES PATENT FFCE..

WILLIAM STEELQE'AIRSONS, OF LADYWELL, ENGLAND. ASSIGNOR TO J. & GOM- PANY LIMITED, OF DEPTFORD, ENGLAND.

APPARATUS FOR DISCHARGNG ASHES, CLINKERS, OR OTHER REFUSE.

T0 all fr0/mnt 'it ma 1/ conce/ra:

lle it known that il., Willman Strani.. .Pini-- sons, a subject of the King ot Great .liritaim and resident of No. 131. l'mbledon road, `lizulyu'cll, in the county o'tf `Kent7 lllnnhnul, have invented new and useiul .improvements in Apparatus tor Discharningr Ashes, Clinlcers, or other lleit'use, ot which the following is a specification.

This invention relates to improvements in apparatus :t'or discharging or ejcctimgashes, clinkers or other roiiuse.

According; to a prior arrangement the apparatus tor discharging or ejecting refuse comprised a hopper and a nozzle combrnation, and the refuse material was delivered by the hopper to a stream oit water passingr th rough the nozzle combination and the latter not only discharged the ashes but also acted as an exhauster in connection with a motor device :for opening and closing` the hopper valve, or Ylor controlling the lflushing: or' the hopper, or for both purposes. This motor device operated, Whenever the suction action due to the How of liquid through the nozzle combination was su'tlicicntly powertul, to open either the hopper valve, or the thiishinp; valve, or both, these Valves beingr kept closed, normally, by means ot a constant pressure. According` to these improvements the motor device or engine, which automatically operates the hopper valve controllingr communication between the hopper and the discharge pipe, is provided with a preferably hollow piston or ram which fits loosely, and so to say floats, in its cylinder. Water :from the sea or other source being' admitted to the cylinder for the purpose of floating; or Washing the piston, whereby it is practically impossible for grit Yfrom the hopper to enter the cylinderand score the lat-ter or the piston, or to cause the piston to jam. The lower portion of the hopper is moreover suitably made in, the form oit a valve` the plug` of' which is adapted in one position to close the hopper and in the other position to open it. The plug and its casing may, if desired, be so constructed and connected to the supply of lflushing Water as `to cut off the latter when the plug is closed. Moreover the plug may be made an easy fit so that water escapes all around and at the ends if desired, and consequently the danger of grit or ashes penetrating between the plug; and the casing thereof is minimized Specification of Letters Patent.

Application filed February 3, 1913.

Patented July 7, 1914.

Serial No. 746,021.

or cnpjinr cylinder, or the water supply to the hopper flushing' valve, or both of these water supplies, may be nornnxlly entirely cut olil until such time as the Sea` Water valve at the outlet oiA the discharge pipe is opened. 'l'his may be done by connecting` the valve coul-rolling;n lthis supply or these supplies with the gate or other valve at the outlet of the discharge pipe in such a manner that the valve Vfor the said supply or supplies can only be opened when the gate is nearly or wholly open.

In order to enable this invention to be readily understood reference is made to the acrn'nnpanying drawings in Which:-

1"' 'ure l is a central vertical longitudinal notion ot' an apparatus embodyingl the pres-- cnt improvements showing;` the automatic rontrolling arrangement in its closed position. which it occupies when the apparatus is inoperative. Fife', 2 is a transverse section upon the line lll-ll ot' Fig. l. Fig. 3 is a View similar to Fig. Il showing); the automatic canitrollingI arraingement in the open position which it occupies when the apparatus is in 'lull operation. Fig'. Llis a plan of Figui. l? 5 is a diagrammatic rciircscntation of an installation comprising' the improved devicc illustrated by the precedinp; figures and Fie'. (5 is a central vertical section to a larger scale oi Avulve controlling,F mechanism seen to the le't'l hand side of Fig. 5.

ln the constriwtion illustrated by the accompanyingl drawings by way of example, a is the water supply pipe and o is the discharge pipe leading; to the sea. The nozzle combination comprises a contracting` cone or nozzle c on the supply pipe a and an expand ingr cone, or nozzle al on 'the inner end ol" the discharge pipe b, the expanding nozzle l having' a slightly flared or coned mouthpiece (a arranged as and for the purpose hereinafter described. The expeller is preferably arranged beneath the floor f of the stokehold, and a selective grating g is incitera/bly arranged in the hopper la so that Waste materials passing' into the hopper and through the latter to the nozzle combination "annot exceed a certain size in any one of three dimensions, as will be hereinafter explained.

The bars oi' the grid are so arranged that the openings y' formed between them are of such a size as to prevent pieces or objects of unsuitable dimensions in either of tivo direct-ions from passing' through, and, as shown in Figs. l and 3, the bars are of such depth that their lovver edges are more or less parallel to the sloping bottom of the hopper i. As the bottom of the hopper slopes in one direction, it. follows that the bars are of gradually increasing depth toward the delivery side of the hopper. Ao cording to this arrangement, tlnaiefore, if any object which has a cross sectional area suitable for allowing it to pass through the grid, has also a length or third dimension Awhich renders it unsuitable for delivery to the nozzle combination, such piece or object will be arrested by the grid arrangement, because the lower end of tne object will come against the bottom of the hopper 71 while the upper end thereof still remains in one of the spaces j of the grid, and it will 'thus be impossible for that obj ct to pass through the hopper to the delivery tube Z: leading from the hopper. lf, as sometimes happens, a bolt or piece of firebar, for example, passes through the openings j of the grid g and is of such length that it would be liable to choke the discharge jet, such bolt or the like is arrested as described and not permitted to slide down the bottom of the hopper With the ashes, cinders and so on. Any other suitable form of hopper or receiver may be employed. The hopper is conveniently provided With a flushing pipe, or Wit-h a number of jet nozzles or orifices l, through which Wa er is discharged 'to Wash the ashes or other refuse down the sloping bottom of the hopper 71, and through the tubular delivery key 7s to the discharging st-ream of Water at the point Where it passes from the contracting cone or nozzle c to the expanding or flared nozzles c and al. rllhe door or bottom of the hopper is preferably not inclined so steeply as to cause the ashes to slide down Without the assistance of the flushing Water delivered through the nozzles or orifices Z. lf desired the bottom of the hopper 72 or the delivery duct thereof, is formed, as at m, as a casing for loosely fitting hollow plug' cock u. This plug has a port o in its conical Wall for the admission of material from the hopper t and has its large end open to the delivery tube Ze. The cock is also constructed With a partition p so that a compartment (y is formed in the small end of the plug. Ports 71 and s are formed in this compartment for opening and closing the supply of flushing water to the nozzles or orifices Z. For example, the cock a in the position shown admits Water from a side connection t, shown in dotted lines, to a hollow space u beneath the hopper, which space a is in communication with the hollow space 'U at the back of the hopper, which space 'a supplies the nozzles or orifices Z. rlhe casing ma or the liner el: Within the same, instead of being fitted loosely by the plug a may be large only in places so as to allovv of leakage locally to wash away grit from between the plug n and the interior of the casing m or liner w. @ne end of this plug extends beyond the cock casing m and is provided With means such as a miter Wheel ae for turning it. Wheel z gears Wit-h another miter Wheel i/ keyed to a vertical shaft e Which passes through a tube or bearing fixed to the floor f and the upper end of said shaft is furnished with a hand wheel 2, F 5, or the like. The valve plug a, as Well as beingi an :ulditional safeguard to the automatically operated hopper valve hereinait'ter described, may also be adapted for use when bilge ivater is being expelled, as will be described hereafter. ln some cases the valve a may he dispensed with and the top of the hopper may be provided with a Acover which may be bolted down, or held down by fastenines or which inav be'otherivise secured.`

The orice of the discharge tube ,7a of the hopper It is, as aforesaid, closed by an automatically operated valve 3 which is suitably flat and circular in form. This valve 3 may be provided With a scraper, or with several Scrapers l to push away the ashes or materials which may be present in the orifice of the discharge tube la and with a circular squeegee 5, there being preferably tivo dished Scrapers 4r with the squeegee 5 between them. rl`he valve may have an india rubber packing or ring 6 or the like, or the seating of the valve may consist of a ring of packing vmaterial llhere is also preferably a sparge pipe 7 with a jet or jets 8 serving the double purpose of Washing the hopper valve 3 and its seating on the tremity of the delivery tube 7c. The hopper valve 3 is mounted on t-he end of a hollow differential piston 9 loosely fitting in a cylinder 10, the annular space 11 of Which is in `communication vvith the sea and is therefore subjected to the pressure due to the head of sea Water corresponding with the depth at which the expeller is situated beneath the surface of the Water.

The sea Water is admitted to the annular space 11 by Way of a connection 12 shown in dotted lines in Fig. 1, but shown also in Fig. 5 in full lines, the connection 12 being supplied by a pipe 13 which can be put in communication With the sea suction pipe lll of the expeller. That end of the cylinder 10 in which the large area of the piston 9 moves, is connected by a duct 15 to an eX- hausting nozzle or element. For example, the duct 15 leads into a casing 16 surrounding the nozzle pieces or cones Z and e and the gap 17 between the tvvo nozzle pieces or cones al e enables the nozzle combination to exhaust the interior of the casing 16 and The' therefore the cylinder 10 by Way of the duct 15. At the back ot the hopperl valve 3,

Yanother valve 18 may be formed and adapt ed to seat against and make joint with the end of the cylinder 10 when the piston 9 is in its retracted position, as seen in Figz, so that the end of the cylinder 10 is then closed by the valve 18 and leakage of water from the connection 12 is thereby prevented from taking place past the piston 9 and into the space or gap between the oppositely tapering nozzles or cones e and t' 'i the in duced current apparatus, this gap Y19 being in the space to which the ashes and waste materials are delivered by the tube part f. The valve 18, moreover, serves to keep grit trom entering between the cylinder 10 and the differential area piston 9. The valve 21 seen best in Fig. 2 for opening and closing the supply of flushing Water for the hopper It, is connected to the piston 20 movable in a cylinder 22 mounted on the cylin der 10. In the closed condition of the valve 3, the sea Water which leaks past the large end of the piston 9 passes through ports 23 in the cylinder 10 and is admitted by the port 24, Fig. 2, to the cylinder 22 so as to operate on the underside of the piston 20 therein. The upper end of the cylinder 22, on the other side of the piston 20, is in communication by a duct 25 with the end of the cylinder 10. The cylinder 22nced not be mounted directly on the cylinder 10 but may be mounted upon any convenient support f and connected with the cylinder 10 by suitable connections.

Vhen no stream passes through the nozzle combination c (Z c, if sea Water be admitted at the connection 12 it leaks past the piston 9 and acts upon the big area of the piston, thereby maintaining the latter in the position seen in Fig. 1 and keeping the hopper valve 3 closed. The Water is also admitted to respective sides oit the piston 20 by the ports 23 and duct 25, and the effective pressure holds the valve 21 doivn upon its seat. If there be back 'lovv of sca Water through the pipe b and nozzle Z the same will pass through the gap 17 between the nozzles f] and e into the casing 16, and through the duct 15 into the cylinder 10 and Will have the same effect as Water leaking past the piston 9 as just previously described. It will be noted that it is not possible for back flow of sea Water through the cone c and into space 19 to effect opening oi the hopper valve 3, but on the contrary the tendency will be to keep the valve 3 closed. Vhen a stream of Water is forced through the pipe a and nozzle combination c, e, d, the pressure upon the big area of the piston 9 is reduced because the water, having diminished pressure and high velocity in the cone e, sets up a suction through the aperture 17, casing 16 and duct 15, but the effective pressure conditions upon the valve 21 and piston 20 remain the same as before. As the suction in creases` however, the piston 9 is moved back, owing to the atmospheric pressure upon its small end, and to the effective pressure of water entering at 12, upon the annular area of the piston. of the piston passes the ports 23, it will be noted that pressure water arriving by the connection 12 will enter through the ports 23 and act upon the underside ot' the piston 20, whereas the upper side of the piston 20 will be subjected to the suction etl'ect of the stream passing through the nozzle combination, owing to the 'tact that the port of the duct 25 is not covered by the piston 9 when the latter reaches the limit ot' its opening stroke. l'n this way the piston 2O is caused to rise and lift the valve 21, whereupon water passes through the chamber 26 and the pipe 20 to the flushing jet nozzles or orifices by way of the side connection t. As .long as the induced current apparatus c, d, e is working properly, the suction is sutiicient to maintain the piston 9 in the rearward position in which the hopper valve is fully opened and the piston 20 is in the raised position in which the flushing valve 21 is fully open, so that, during Working, sea water entering the annular space 11 of the cylinder 10, flows around and past the piston 9 and washes the same and also flows through thc ports 23 connecting the tivo cylinders 1() and 22 past the flushing valve 21 and through the pipe 26 to the flushing nozzles or jets Z at the top of the hopper h. lhis annular space 11 is connected to the sparge pipe 7 by a pipe 27, so that during working a spray is maintained over theseat et' the hopper valve 8.

The stream of water is suitably supplied to the pipe a by a rotary or centrifugal pump 28 driven by a steam turbine 29 or other motor, the suction pipe 30 of the pump 2S being connected to the sea by the pipe 14 open to the sea through a suitable connection 31, which latter may contain a strainer. The pipe to the sea has a valve 32 which controls the supply of Water entering by the pipe 14;, part of which Water passes into the pipe 1B, and part into the pipe 21 The pipe 13 may be provided with a separate valve 33, and the pipe 30 with a valve 34., the last named being a valve which can be adjusted either to admit sea Water troni the pipe 14 to the pump suction 30, or to place the last named in communication with the bilge pipe 35 so that, if the suction pipe 30 be cut off from the sea water pipe let, the pump 28 may be used to empty the bilge.

In order that the water supply to the connection 12, which supply is used for flushing the hopper and spareing the seat et the valve 3, may not be turned 'on until As soon as the enlarged end the gate valve 36 in the discharge pipe Z) is opened, a valve 37 in the pipe 13 is op era'tively connected in the following manner as illustrated clearly in Fig. (Sz-The gate valve rod 3S, which is adapted to turn or move the gate valve 3G in any suitable 1nan ner, is screw threaded at 38a and is reciprocated by an internally screwthreaded miter wheel 89 mounted in a suitable bearing 39a, said miter wheel meshing with another miter wheel l() keyed to a shaft l1l mounted in bearings and provided at its other end with a hand wheel 12 Fig. 5. The valve 37 for controlling the flushing water is suitably of the lift or mushroom type and is normally closed by a spring 3T surrounding its stem 3371. The screw-threaded gate valve rod 38 is arranged in line with the stem 87 of the valve 3T and is of such a length that the gate valve must be fully opened or almost fully opened before the said rod 38 comes into contact with the stem 37b of the valve 37 for the purpose of forcing the valve 37 from its seat. The rod 38 and miter wheels 39, '10 are shown inclosed in a casing` permit of discharge of such material by the stream of water. Also the flushing water ceases and no more material is delivered to the discharging stream prior to the closing` of the discharge or gate valve 86.

In operation and assuming the pump to be working, `flow of water takes place through the primary or contacting cone c of the nozzle combination, across the gap or space 19, through the flaring cone c, past the annular opening 17 and through the secondary cone (Z. The water in the pipe a has pressure which is transformed into velocity in the cone c, the water again acquiring pressure and losing velocity in the cones c and cZ. Owing to the reduced pressure and velocity of the stream at the point 17 suction is applied to the chamber 1G and duct 15, so that water in the cylinder 10 of the piston 9 is withdrawn and carried away by the stream of water, and the pressure on the large area of the piston 9 is diminished. The pressure of the sea water admitted at 12 and acting on the annular area of the piston or ram 9, causes the latter to move toward the left hand, Figs. 1 and 2, in the cylinder 1() and the hopper valve 3 is slowly moved away from its seat. Although the hopper may be full of ashes and waste materials, however, none of these are fed down into the space 19 until the larger end of the ram 9 passes the ports in the cylinder 1,0, whereupon sea water passes from the connection 12, by way of the annular space 11, to the space between the flushing valve 21 and piston 20. Meanwhile the stream of water having been eX- hausting the water from the cylinder 10 and therefore exhausting the space above the upper and larger' area of the flushing valve piston 20, the latter now rises and lifts the valve 21, and the sea water passes the valve 2.1 and is delivered, at a pressure corresponding with the head, to the flushing orifices or jets Z at the upper end of the hopper, thereby washing the ashes down the inclined bottom of the hopper Zt, through the tube Zt', and into the space 19 where they are talten up by the stream of water passing from the cone o to the cone e and are discharged outboard through the pipe b and gate valve 36.

1f at any time the pump 28 should break down or an obstruction should talte place in any of the pipes or cones, the suction effect aforesaid would cease,.or be reduced, so that the pressure of the sea water admitted at the gap 17 would at once move the piston 9 forward whereupon the flushing` valve 21 would at once close and immediately after- 9 ward the hopper valve 3 would be closed.

F or discharging bilge water, a non-return valve is fitted in the pipe connection 43 which leads from the bilge into the side of the expeller casing at a point near the gap between the cones c and e. lhen the cock n is closed and air and material in the hopper are thereby prevented from passing through the delivery tube Zr, the suction created by the stream of water forced by the pump 28 through the nozzle combination c, c, (Z, causes the non-return valve to yopen and sucks in bilge water through the connection 13. Asthe valves 82 and Blmay be adjusted so that the pump 2S is delivering bilge water to the nozzle combination, it will be apparent that the bilge water drawn in at L13 will augment the quantity actually sucked up and delivered by the pump 2S. ln place of the valve :e a cover may be provided for closing the grating g in an airtightmanner, but as it is very convenient to have the grating g on a level with the floor, so that waste material can be swept or shoveled from the floor on to the grating it is generally preferred to employ the valve a and to dispense with the cover which might offer an obstruction on the surface of the floor.

Access may be had to the jet chamber by a hand hole which is normally closed by a cover 111 and the end cover /15 of the cylinder 1G may be removable in order to allow of the parts being readily inspected or repaired. Also the end cover 16 of the cyl# inder 22 may be detachable to allow of' ready access to the piston 20 and valve 21.

lt is obvious that the apparatus can be varied considerably from the particular construction shown without departing from the essence and spirit of `the present invention.

The details of the hydrostatic partof the apparatus, as well as of the mechanical part, are capable of being changed to suit particular circumstances and of being very greatly modified Without departing from the invention.

l believe myself to be the first to employ in a hydraulic ejector a loose piston governiug the ash valve, which latter is also a back-flow preventing valve, by means of a piston having a loose fit and constantly supplied with water 'which flows past the piston and maintains the same free from grit and obstruction and enables the piston to work smoothly and easily Without interfering with the effective operation thereof. .l believe myself also to be the first to employ a hollow floating piston for the purpese and also to employ a differential piston with water pressure always upon the small area and acting inthe direction for opening the ash valve. l believe myself also to be the first to employ a flush controlling valve held to its seat by pressure and opened under the direct influence of the suction set up by the ejector. l also believe myself to be the first to control the operation of the flush-controlling `valve by means of the piston aforesaid acting as a piston slide valve for distributing the pressure to a piston operatively connected with the flush-controlling `valve.

I claim 1. Apparatus for discharginff refuse into water comprising a hydraulic ejector combination, a cylinder having one end in communication with said ejector and its opposite end in communication with a Water supply, a loosely fitting differential piston in said cylinder, and a valve operatively connected with said piston and controlling the admission to said ejector'.

2. Apparatus for discharging refuse into water comprising a hopper, ejector nozzles in coperative relation, a chamber inclosing a space between said nozzles and having communication with said hopper, a cylinder having one end in communication with one of said nozzles and its opposite end in communication with a water supply, a loosely fitting piston in said cylinder, and a valve operatively connected with said piston said valve being adapted to control the communication between said hopper and said chamber. l

Apparatus for discharging refuse into Water comprising a i hydraulic ejector, a floating piston adapted to be moved in one direction by suction due to said ejector and by pressure due to a head of Water, and to be moved in the opposite direction by such head of vater, and a valve operatively connerled `with said piston and adapted to control admission to said ejector.

el. A pjniratus for discharging refuse into water comprising' a hydraulic ejector, acylinder, loosely fitting differential piston in said cylinder, a pressure connection for said cylinder on the side of the smaller area of said piston, a connection between said ejector and said cylinder on the side of' the larger area of said piston, and a valve operatively connected with said piston and adapted to control admission to said ejector.

5. Apparatus for discharging refuse into water comprising hydraulic ejector nozzles in cooperative relation, a chamber inclosing a space between said nozzles, a cylinder, a loosely fitting hollow differential piston in said cylinder, an admission port at one end of said cylinder adapted to constantly admit pressure liquid to the small area of said piston a suction and back pressure port at the other end of said cylinder, a connection between the last named port and the hydraulic ejector and a valve in operative connection with said piston and adapted to control a refuse entry opening in said chamber.

(3. Apparatus for discharging refuse into water comprising a hydraulic ejector nozzle combination, a chamber inclosing a space between nozzles of' said combination, a cylinder, a loosely fitting differential piston in said cylinder, an admission port at one end of said cylinder adapted to constantly admit pressure liquid to the small area of said piston, a suction and back pressure port at the other end oit said cylinder, a connection between the last-named port and one element of the hydaulic nozzle combination, and an annular valve mounted directly on the small end of said piston and adapted to control a refuse entry opening in said chamber.

7. Apparatus for discharging refuse into Water comprising` a hydraulic ejector nozzle combination, a chamber inclosingl a space between nozzles of said combination, a cylinder, a loosely fitting piston in said cylinder, a trunk on said piston said trunk passing loosely through one end of' said cylinder at which end is an admission port adapted to admit pressure liquid to the small area of said piston, a connection between the opposite end of said cylinder and one element of the hydraulic nozzle combination, and an annular valve mounted on the end of said trunk and adapted to control a refuse entry opening in said chamber.

S. Appa 'atus for discharging refuse into water comprising a hydraulic ejector nozzle combination, a chamber inclosing a space lflll between nozzles of said combination and having a refuse entry opening, a cylinder, a loosely fitting piston in said cylinder, a trunk on said piston said trunlr passing loosely through an opening in one end of said cylinder and entering said chamber', a

valve seating around said refuse entry opening, a Valve seating around the opening in the end or said cylinder, and reversely arranged Valves on said piston adapted to close on to said seatings at respective ends oi the stroke of said piston.

9. Apparatus for discharging refuse into Water comprising a hydraulic ejector nozzle combination, a chamber inclosing a space between nozzles ot said combination, a hops per communicating with a refuse entry opening in said chamber, an automatically controlled valve operative to open and close said refuse entry opening, and a selective grid arrangement in the mouth of said hop-v per, said grid arrangement having passages adapted to select objects according to three diiiierent dimensions substantially as and for the purpose set fort 10. Apparatus for discharging refuse into water comprising a hydraulic ejector, a chamber inclosing a refuse entry to said ejector, a hopper communicating' at its bottom with a refuse entry opening in said chamber, water flushing means adapted to wash refuse down said bottom to said entry openings, a valve adapted to normally close said opening but to be opened by suction set up by said. ejector, a normally closed valve controlling said water flush, and means connected with said tlnshing valve adapted to be directly influenced by the suction set up by the ejector for the purpose ot opening said Hush controlling Valve.

11. Apparatus for discharging refuse into water comprising a hydraulic ejector, a chamber inclosing a refuse entry to said ejector, a hopper communicating at its bottom with a refuse entry opening in said chamber, water flushing means adapted to wash refuse down the bottom of said hopper to said entry opening, a valve adapted to normally close said opening but to be opened by suction set up by said ejector, a flush controlling Valve normally seated by pressure applied thereto, and a piston connected with said Valve and adapted to be influenced by the suction set up by said ejec tor for the purpose of opening said lushcontrolling Valve.

12. Apparatus for discharging refuse into water comprising` a hydraulic ejector, a chamber inclosing a refuse entry to said ejector, a hopper communicating at its bottom with a refuse entry opening in said chamber, water flushing means adapted to wash refuse down the bottom of said hopper to said entry opening, a valve, a diierential piston connected with said valve `and adapted to normally close said valve over said opening under pressure applied to the differential areas of said piston but to be opened by suction set up by said ejector, behind the larger oiC said diiierential areas, a cylinder loosely inclosing said piston, a Hush controlling Valve normally seated by pressure applied thereto, and a piston connected with said Valve and adapted to be placed under the suction inlnence of said ejector by the movement of said differential piston in relation to ports in said cylinder under the action of the suction substantially as and for the purpose set forth.

13. Apparatus for discharging refuse into water comprising a hydraulic ejector, a chamber inclosing a refuse entry to said ejector, a hopper communicating at its bottom with a refuse entry opening in said chamber, water flushing means adapted to wash refuse down the bottom of said hopper to said entry opening, a valve, a dierential piston connected with said Valve and adapted to normally close said valve over said opening under pressure applied to the differential areas of said piston but to be opened by suction set up by said-ejector behind the larger of said differential areas, a cylinder loosely inclosing said piston and haring in its walls a port arranged within the limit of the rearward stroke of said piston and a port arranged beyond the said limit, a connection between the rear end or said cylinder and said ejector, a casing on said cylinder, a piston in the upper part cil said casing, a flush controlling valve in the lower part of said casing, a connecting rod between said valve and the last named piston, a connection between the first named port and said cylinder at a point between the connected valve and piston and a connection between the second named port and the ton of said casing.

14. Apparatus for discharging refuse into water comprising a hydraulic ejector, a chamber inclosing a refuse entry to said ejector, a hopper communicating at its bottom with a refuse entry opening in said chamber, a self-closing valve adapted to normally close said opening j but to be opened by suction set up by said ejector, and a revoluble plug valve arranged in the bottom of said hopper and adapted to control the communication between said hopper and said chamber independently of the first named valve substantially as set forth.

15. Apparatus for discharging refuse into water comprising a 4hydraulic ejector, a chamber inclosing a refuse entry tov said ejector, a hopper1 communicating at its bottom with a refuse entry opening in said chamber, water flushing means adapted to wash refuse down said bottom to said entry opening, a valve adapted to normally close said opening but to be opened by suction set up by said ejector, a normally closed valve controlling said Water flush, valve operatlng means responsive to suction set up by said ejector' and connected With said flushing valve, a hollow revoluble plug arranged in the bottom of said hopper and` adapted to control the communication between said hopper and said chamber independently of the lirst named valve7 said hollow plug having ports so disposed that When it opens communication between said hopper and said chamber it simultaneously opens a Watersupply to said usbino means.

16. Apparatus for discharging reiuse into Water comprising a hydraulic ejector, a chamber inclosing a refuse entry to said ejector, a hopper communicating at its bottom With a refuse entry opening in said chamber, Water flushing means adapted t0 wash ret'use down said bottom to said entry opening, a gate valve adapted to open and close the outlet from said ejector, operating mechanism for said gate valve, a flush eontrol valve7 and means in operative connection with said mechanism and adapted to open said fiush control valve in arrear of the opening ot' said gate valve and to close said lush control valve in advance of the closing of said gate valve substantially as set forth.

WILLIAM STEEL PARSONS.`

Witnesses W. MORLEY, O. J. WORTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, `Il. C.

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