US2482283A - Water service apparatus - Google Patents

Description

Sept. T MCGARRY WATER SERVI CE APPARATUS s Sheets-Sheet 1.

Filed Feb. 10. 1944 45 //VVENOR 2 ma ATTORNEY.

Sept. 20, 194%. J. T. MCGARRY 2,482,283

WATER SERVICE APPARATUS Filed Feb. 10. 1944 3 Sheets-Sheet 2 79 6 79 A rromws Y,

Sept. 20, 194-9. J. T. MCGARRY WATER SERVICE APPARATUS 5 Sheets-Sheet 3 Filed Feb. 10. 1944 patented Sept. 2Q, 194?) WATER, SERVICE APPARATUS John T. McGarry,

Cincinnati, Ohio;

Mary

Frances McGarry, executrix of said John '1. McGarry, deceased, assignor to Railroad Products Company, Cincinnati, Ohio, a corporation of Ohio Application February 10, 1944, Serial No. 521,827

16 Claims. 1

My invention relates to hydrants and the like, and more especially to such apparatus so exposed as to require precaution against freezing, and to require drainage of the residue of water in the riser after each taking of water.

One object of my invention is to avoid connection of the riser-drainage means with a sewer or other receptacle for the drainage from which the riser and other parts contacted by the used water may be contaminated. This object is attained by use of a reservoir receiving the drainage from the riser immediately after each taking of water for use, and by using force of water from the supply main, at the next taking, to return the drained water from the reservoir to the riser to pass out therefrom with water coming directly from the main, for use.

It is necessary to admit air to the reservoir as the drainage is drawn therefrom and to allow escape of air from the reservoir as water drains into it from the riser. Another object of my invention, ancillary to the first described object, is to exclude from the reservoir contamination carried in the atmosphere from which the air .enters the reservoir.

In order to reduce the amount of water in the reservoir by at least the amount drained each time thereinto, it is necessary, since it is water diverted from the main stream coming from the main that operates to take the drainage from the reservoir, to permit this main discharge to continue until the required reduction of amount of water in the reservoir is attained. A further object, therefore, is automatically to lock the main valve against closing until the flow from the main has been suflicient to effect the required reduction 'of amount of water in the reservoir.

Concerning the object of removing the drainage from the reservoir, the novel means therefor is disclosed in my co-pending application, Serial 452,315, filed July 25, 1942, which has become abandoned and in my application, Serial No. 448,095, filed June 23, 1942, and which became abandoned December 3, 1943. In that respect, therefore, this application is continuous with the first mentioned prior application which in turn is continuous in part with the second mentioned prior application. Concerning the exclusion of atmospheric contamination from the reservoir, and the locking of the main valve, as above described, the novel means therefor is disclosed in my first mentioned prior application. No improvements other than are disclosed in the mentioned prior applications are disclosed herein. Other objects, not above mentioned, will appear in the course of the following description, illustrated by the accompanying drawings, in which- Figure l is a side elevation of a complete apparatus embodying my invention, certain portions thereof being shown in vertical cross section;

Fig. 2 is a schematic illustration of the apparatus, showing relative positions of certain parts in one stage of use of the apparatus;

Fig. 3 is a like illustration showing change :relative positions of said parts in another stage of use of the apparatus;

Fig. 4 is a sectional plan view of the lower portion of the apparatus, the section being on line 4-4 of Fig. 5;

Fig. 5 is a sectional side elevation of said lower portion, the section being on the vertical plane of the line 55 of Fig. 4;

Fig. 6 is a vertical section of said lower portion and portions thereabove, on line 66 of Fig. 5;

Fig. 7 is a horizontal cross section on line 1-1 of Fig. 5; and

Fig. 8 is a vertical section on line B8 of Fig. 4.

In Figs. 1, 2 and 3, the upper part of the apparatus is that of a hydrant used in supplying potable water to railroad trains; and in this example, including Figs. 4 to 8, inclusive, the means for using the newly admitted water from the main to remove the drained water from the reservoir comprises a motor driven by part of the newly admitted water and a pump driven by the motor and pumping the drained water from the reservoir into the riser. The primary consideration is the lower structure; and other kinds of structures upstanding from the ground level, or near or at the ground level, may have the disclosed lower structure. The upper structure is described for clearness.

In Fig. 1 is shown the pedestal I having a chamber entered at its bottom by riser 2. The pedestal top is a housing screwed to the top wall of the chamber. A spout 4 leads from one side of the chamber and has its end 5 threaded to receive a hose or the like. The top of the chamber has a stuffing box up through which extends operating rod 1 from within riser 2. The handle 8 has members straddling housing 3, and in collars 9 .in the respective housing walls a square shaft l0 fits, across the interior of housing 3, with ends projecting at both sides thereof. The members of handle 8 fit the square projections of shaft l0; and in the housing an eccentric cam ll fits this square shaft 10. When handle G is The top II of the body 61 has the socket 14 for which the air chamber bottom 13 forms the lid, with a gasket I3. Screws I5 through bottom I3 and top H into body 61 unify the body 61 and the air chamber I2. The socket I4 of the body top H contains the timing gears 16 which are fixed to the rotor shafts 11 that have bearings I8 in chamher bottom 13 and in the barrel bottom 69, with packings 80, 8| and 82 in bottom 69, partition 68 and barrel top II, respectively. Accurately fitting the motor chamber are the coacting epicycloidal rotors 83; and likewise fitting the pump chamber are like rotors 84. The rotors 83 and 84 are fixed on the respective shafts 11. The pump rotors 84 are of much greater diameter than the motor rotors 83; as here shown in ratio of about three to one. This is so that there will be a rapidexpulsion of the drainage from the reservoir, avoiding the use of too much of the water directly from the main 31, which fiows up through the riser 2 along with the pumped drainage water from the reservoir. This is permissible, as the water from main 3'! has much higher pressure than must be overcome by the pumped drainage water from the reservoir up to spout 4 or any extension thereof, as a hose leading, for instance, up onto the top of a railroad car being supplied with the water. Also there is to be made allowance for slippage of water in bothmotor and pump, so that the actual ratio will be less than the theoretical one, but sufficient.

The body 61 has in its walls the motor inlet port 85, the motor outlet port 86, the pump inlet port 81 and the pump outlet port 88, registering, respectively; with the openings 58,60, 62 and 93 in the walls of barrel'55. As the body 01 is to be raised out of barrel 55, packings 89 are provided in recesses around the outer ends of ports 85, 86, 81 and 88 against the interior surfaces of barrel 55, to fit tightly yet be slidable up and down on these surfaces.-

The lid 90 is secured to the top of air chamber I2 by screws 9|; and the strut tube 23 has its bottom end screwed into a central opening in this lid 90, so as to serve as a vent from pedestal vent pipe 22 to the air chamber, at all times. It is readily understandable that only such a vent would serve the reservoir as the water enters or leaves it; but it has been found that this direct venting permits ready entrance of impurities from the atmosphere into the reservoir, which a screen or the like for the vent will not certainly prevent. It is preferred to limit the venting to strut tube 23 rather than through the large casing tube because the latter would more easily admit dust, soot and other substances which, collecting on the entire lid 90, would more'easily drop into air chamber 12 through such lid opening.

' It will be seen that tube 23 serves as a strut to hold the mechanism firmly down in the barrel 55, and asa handle for lifting the mechanism above the ground for servicing, as well as the vent as just described. The connection of the casing tube 20 with the reservoir top excludes all matter from the surrounding soil in which the structure is embedded.

The air chamber piston 92 comprises a body plate 93 with a central hub 93 into which is pinned, with a filler 93", the bottom end of the tubular stem 94, which extends up centrally in strut tube 23 with radiating arms 95 near its top end guidingly contacting the interior walls of this tube 23. The piston cup packing 96 has its rim u s din around its ho d nep ate 91 held by screws 98 to the piston body plate 93. Such cup packing 96 is preferred as being effective without excessive tightness against the chamber walls; but I am not limited to use of it.

A finger 99 is fixed to an edge part of piston body plate 93, depending to enter downward through an opening I00 in the air chamber bottom I3. This opening allows passage of airfrom air chamber I2 into the reservoir as piston '92 descends upon exit of water from the reservoir, and in the opposite direction as water enters the reservoir and the piston 92 ascends.

The counterweight IOI surrounds and is guided by strut tube 23 and is connected to one end of chain I02 running over a sheave I03 in a slot I04 in the tube wall; the other end of chain I02 being connected to the upper end of piston stem 94. The sheave I03 has a shaft I05 in ears I06 on tube 23 at opposite sides of its slot I04. Weight IOI is unsymmetrical with its heavier part where it connects with chain I02 to hang with its diameter substantially horizontal. The counterweighting of the piston structure, and a making of the parts as light as is feasible, respectively make up and down movements desirably of like resistance, and minimizes friction so asnot to depart too much from the conditions with free flow of air to and from the reservoir. Only slight lubrication is needed, and opening I00 affords scant facility to run from the air chamber mechanism into reservoir 12 to mingle with the drainage.

The piston 92 descends under atmospheric pressure thereon against atmospheric pressure on the water rising in riser 2; the less distance in proportion to the greater area of piston 92 rela-' tive to the area of exposed water surface in riser 2 around rod I, departing from theory only by the efiect of friction and weighting the piston 92. This also is true when water is draining into the reservoir. The nature of the counterbalance may affect either operation one way or the other; and the progressive change of disposition of chain I02 also varies that nature. Thus, as seen in Fig. 6 most clearly, most of chain I02 hangs at the outer side, resisting descent of the piston; which is as it should be, because the water is in the reservoir and not in the riser where it could more effectively resist the piston descent. Conversel y, with piston 92 lowered, most of chain I02 hangs inside tube 23 where it more effectively permits descent of piston 92; again'as it should be, because then the water is higher in the riser and can more effectively resist the piston descent. These conditions are favorable at all stages in the manner just described.

To augment these effects weight may be added only to that part of chain I02 that passes from either side to the other of sheave I03. Thus, as shown, blocks of this chain I02, which is a sprocket chain, are enlarged to act more effectively as weights, as the blocks I01. In Figs. 2 and 6, all of these enlarged blocks are at the outer side to resist descent of the piston 92 or aid its ascent; and in Fig. 3 all of them are at the inner side to resist ascent and aid descent of the piston.

When the apparatus is used for such purposes as supplying potable water to railroad cars there is almost never a less taking of water than is required to operate the pump long enough to empty the reservoir. But, while the apparatus is not intended for such purpose, only a small amount of water may be desired, as only a cupfulyin. which case if the operator closed the main valve 38 assoon as that small amounthad been ob tamed, only part ortheres ervoir water would be: removed. If this happened many times, though the reservoir hasan excess of capacitythecumn' lative residues wouldwpreclude fu-l l drazinageTot the; risenwhi'ch of course always: iszleit full, whatever small amount of waterhas been takern This: makes .it desirable. automatically; without de-- pendence upon care of the: operator. to take enough water, to prevent such premature: closure of main valve 38;. compelling: s1ifficieni-,flow or water, though it may not be wantedto empty the reservoir every time the apparatusis used.-

For this purpose, as. exemplified herein; the casing 2-1 and reservoir part 4-5 have a: ex-i tension in which is a horizontal shaft. lfllg with. a: bearing H39 on the extension: wall. Here are arm: H is fixed on shaft Hi8, extending, forward.

7 der air chamber bottom. opening no to: be ens gageda by piston finger 9-9 when it projects down through opening I l-II as previously mentioned. The shaft Hi8 has a second bearingv H! on. the extension wall at the rear of casing 21;, and here ithas fixed on it the upright arm HQ with afiront nose beveled downwardly forwardly at itstopand entering a slot H3 the wall ot casing llf.

The liner 28 has through its wall, at this slot M3, the detent opening- H4 containing a pin 5st. length equal tothe thickness of the liner wall having its outer end engaged by the nose ot arm: '2. The drain valve cup as has lengthwise throughi-ts cross. part 54 the guideway HB- mam venetian-re andstiopping tiais'renioval 'dction 'is -automatically prevented until them itsengagement' withthe chamber 1:3 time a not: strainingthe shaft and arm; assemblwmr bolt H8. or course '99 is': sufiiciently, ac:- curately of such length and thei'shaft'and likewise so proportioned and arranged; that-"bolt I: I2 is properly, heldin release position: witir'the' piston. 92; thus stopper-1. Also the pistomfl. its stopped: byabutments it on the bottom of the air chamber lid 98;; v

InFig. 2;, the maimvalvefiia has: 111st shortly bee f ore: been opened: and an im'tial; portion. of. water R has passed fromthe reservoir, into the riseri; bolt 4% having protruded opemng- M.-4-. Fig. 3, water discharged? in excess of riser eon:

' tent. may have 1m any; amount;

meets detent opening H4 when the cup valve-50,

descends with. opening of main valve-.38. The outer end portion of guideway H5. is. reduced. to leave an annular shoulder lllfacing. forwardly; and bolt l l 8 is guided in the reducedlpor nwith. a head I I9 engaging shoulder HT underpre'ssure of a spring I between head "l [9 anda' plug [2!! in. the front end of guidewayl l5. 1 I V Thus, when the drain valve is opened. downwardly', the bolt H8 registers with and springs out into the detent opening 114', pushingpin [H 5 backward and swinging uprightarm H12 backward and arm Hil upward under chamber bottom opening fllil. The bolt H8 thus can'pre-- vent return of the main valve 38 upward for its closure. The detent opening I14 and pin file, are larger in diameter than the protrudi'ngbolt H8 and its guideway' part, so that pin L15 can: not enter the bolt guideway. Also the protruding bolt part has considerable clearance in the de-' tent opening N 3 for easy movement outfol this opening when the main valve-t8 'isheld fully open by its operating cam- H swung dpwn 'as' in Figs. 2 and 3. Having the pi'n 1' l5 separate from the arm H2 permits removal of theliner (and associated parts upward as before explained? The nose of arm I I2 is beveled at its top because, to be free to act on pin H5- it'must haveclearance in slot Il3 as indicated. So having, it can enter casing 21 when liner 28 is removed, and so must be pushed aside by the liner 23 as i-t'is insertedinto casing 21. Most of this'construction steer seen in Fig. 8. g V

When the descending piston finger Sapushes' the shaft arm Hil downward, the shaft upright arm H2 is swung forward, pushing pin"ft'ii f'erward, which pushes bolt H8 out or detent -opening H4 against pressure of spring [20,;- leaving main valve 38 free to rise and close, the 'positipn' shown in Figs. 5 and 8, if'cam H is swung up as seen in Fig. 1; thus stopping the flow of water.- As this action cannot occur untilthe piston-92 has reached its lowest position due to'the fuli previous drainage having been "withdrawn the: reservoir by action of theflowing water, the

is indicated at. IE; it being understoodxthat these schematic views do-notshow parts in their true proportions. In Fig. 2 the'pistonjfi isadescend ing; the-water being pumped theroservoir. In. Fig. .3 the piston. 92 isentirelydown: and pushed the? bolt M8." out or theopening. #114,, so that the operator can close main val ve'eaz whenever he'has obtained the: desired ameunt of waterE.

'The'clo -.e of upper liner-and casing port when the cupzvalveiflsis raised is to protect themat c! in the. ducts. it and 6-3 from outer air impurities until it has leaked throughthezmoter and pump backv into the reservoir, whiclrleakage-may be negligible if the motor andnump are amply'proof' a ainst slippage. of warm Asarranged not entirely emptied; the port 43 slants dewn to the: reservoir; leaving, a. moderate head of water theupperisurfaceoi' which; in; drain port 48', is the only watervsurfiace exposed. to the atmosphere. when. the reservoir :Air will bubble 'in through. slight heart; eliminating whatever been created in the reservoir by operation of tne'pump' bydischarge of. water miter: the vreservoiremptied.atthe previous use; It is desirable to some change oi air in the reservoir, as. withalwajss the same body oi air retained; air would foster reactions amdfgerminafihn. of its content; ac cumulating chemicals. or gems. from, the mam succeeding volumes of water. 7

It: is preferred to have-the. reservoir capable of holding considerablerdrainage in excess'aE riser capacity, 'beiowatochemher "as.

there is never any cumulative deposit of I purities as ina; direct-reservoir vent over reservoir water as just noted. Moreover, a cap C, shown dotted in Fig. 1, may cover the outlet of spout 4, minimizing entrance of impurities to the riser and onto the slight exposure of reservoir water in the drain port 49 as before mentioned. It also keeps pollution off of the spout threads which would enter a hose as it is screwed onto the spout 4.

Could the piston 92 not remove the bolt I08 to release position the discharge would continue until the next use of the apparatus. The chain weight blocks I01 may be made heavy in proportion to the efilciency of the motor and pump, so to resist descent of piston 92 that vacuum is created in the first stage of piston descent, and. as weights I01 pass over and downward they add force of gravity in degree that they overcome counterweight IOI, against the reduced air pressure in the reservoir, giving the piston 92 the more force to remove bolt I08 to allow main valve 38 to close. Also any vacuum in the reservoir promotes quick drainage from riser 2, lessening the chance of the Water freezing on the riser walls and the rod I; which freezing, cumulative, can build ice on these parts to the extent of clogging the riser and making the apparatus inoperative.

The piston 92 prevents vapor from the reservoir rising and condensing in the interiors of the upper parts of the vent means, as tubes 22 and 23, there to freeze or to adhere dust as is the case with a direct vent to the reservoir.

A usual habit of persons drinking is to withdraw and throw away a first portion of water, if a cup is used, or to allow considerable water to flow from a fountain before drinking. Also, nearly always more water flows to the drinking fountain basin than the user drinks; and children tampering usually will allow too much instead of too little water to flow for emptying the reservoir. Along with all the other advantages described for the apparatus, which as shown herein is of the type for railroad car watering, the bolt I08, avoiding speculation as to the just mentioned circumstances with a drinking fountion, is especially valuable in such a fountain. Therefore, this modified use, with upper parts designed as in drinking fountains, or other uses occurring in practice, as well as modifications of structure, I regard as within the scope of my invention as defined in the following claims.

I claim:

1. In water service apparatus, casing means, a main valve in said casing means, a main in water-delivering relation to said casing means,

a riser in water-receiving relation to said casing means, said main valve being operative to permit or prevent flow from the main to the riser, a reservoir in water-receiving relation to said riser, a second valve operative to permit or prevent flow from the riser into the reservoir alternative with the flow from the main to the riser and invariably operative to prevent flow from the main directly to the reservoir, a motor, means admitting water from the space between the two valves into said motor when said main valve is open, a pump driven by said motor, having an inlet from said reservoir, means 'for admitting water from said motor to said riser beyond said second valve from said main valve, and means for admitting water from the pump into the riser along with the water admitted from the motor.

2. Water service apparatus comprising a riser and a reservoir into which drainage passes from the riser for storage after each use of, the avparatus, and means for exerting the force of water newly admitted to the apparatus upon said drainage/to dispose said drainage out of the reservoir, said apparatus comprising means fwhereby the disposed drainage is conducted into the riser under said force, and means holding air in common with said reservoir, having an operation to increase its air capacity as the drainage passes into the reservoir, and having an operation to decrease its air capacity as the drainage is disposed out of the reservoir.

3. Water service apparatus as set forth in claim 2, in which is included a device assistant to the increase of air capacity of the air-holding means in progressively increasing degree as the drainage passes into the reservoir and assistant to the decrease of air capacity of said air-holding means in progressively increasing degree as the drainage is disposed out of the reservoir.

4. Water service apparatus as set forth in claim 2, including flow-control means having operations, respectively, for permitting admission of forcing water and stopping said admission, and a control device operative to assume preventive relation to said flow-control means whereby it can prevent the admission-stopping operation of said flow-control means, upon admission-permitting operation of said flow-control means, said device having a subsequent operation in conjunction with a terminal stage of aircapacity-decreasing operation of the air-holding means, to restore said control device out of said preventive relation to permit admission-stopping operation of said flow-control means.

5. Water service apparatus as set forth in claim 2, including flow-control means having operations, respectively, for permitting admission of forcing water and stopping said admission, and a control device operative to assume a preventive relation to said flow-control means whereby it can prevent the admission-stopping operation of said flow-control. means, said device having a subsequent operation in conjunction with a terminal stage of the air-capacity-decreasing operation of the air-holding means, to restore said control device out of said preventive relation to permit admission-stopping operation of said flowcontrol means, said apparatus also including a device assistant to the increase of air capacity of the air-holding means in progressively increasing degree as the drainage passes into the reservoir and assistant to the decrease of air capacity of said air-holding means in progressively increasing degree as the drainage is disposed out of the reservoir.

6. Water service apparatus as set forth in claim 2, in which is included means stopping the decrease of air capacity of the air-holding means in the course of continued operation of the forceexerting means after the drainage is disposed out of the reservoir, which force-exerting means, due to the stoppage of decrease of air capacity, can then reduce the pressure of air in the reservoir, whereby succeeding drainage into the reservoir is facilitated by the reduced pressure of the air therein relative to the pressure of air in the riser.

'7. Water service apparatus as set forth in claim 2, in which is included means for stopping the decrease of air capacity of the air-holding means in the course of continued operation of the forceexerting means after the drainage is disposed out of the reservoir, which force-exerting means,

due to stoppage of decrease of air capacity, can then reduce the pressure of air in the reservoir,

amass:

whereby succeeding drainage into the reservoir is facilitated bythe. reduced pressure of the air therein relative to the pressure oi air in. theriser, the: reservoir and the riserflloeing so proportioned and arranged in their drainage-exchanging: reration that the drainage, in. the terminal stages of its: accumulation the. reservoir, presentsa portion of drainage. through which air passes from the: riser into the reservoir without. exposure of the top surface of the water in. the; reservoir to exterior atmosphere.

8. Water serviceapparatus comprising a riser and" a reservoir into which the drainage passes from theriser for storage after each use or the apparatus, and means for exerting the force of water newly admitted to the apparatus upon said r'ainage, to dispose said drainage out of the reservoir, said apparatus comprising means whereby the disposed drainage-is conducted into the riser under said force, an air chamber in aircontaining continuity with said reservoir, and a piston movable said chamber in response to venting movement of. air the reservoir and chamber incident to the passage oi said drainage inter and; out.- of the reservoir. 7 r

9. Water service apparatus: asset torth claim 8,.in which the piston ascends as the. drainage passes; into the; reservoir and descends as the drainage passes from the: reservoir, said apparatus including: coimteractingr means. having. an operation to substantially neutralize the weight of. said piston relative to theprcssures' incident tothe passages of thedrainage. V

10. Water service apparatus as. set forth in claim 8 in which the piston ascends as: the drainage passes into the reservoir and descends as the drainage passes from the reservoir; said. apparatusi including counteracting means comprising a Weight, a sheave member; and a. flexible member passing over said sheave: member and connected to said weight and: to said piston, to substantially neutralize weight of said piston relative to: the pressures incident. to the passages of the. drainage; 7

11.; Water. service apparatus. as forth in I claim 8, in which the piston ascends as the drainage passes into the reservoir and descends as the: drainagepassesv irom; the reservoir, said; apparatus including counteracting means having: an

operation to: substantially the weight of. the piston relative to the. pressures incident to the passages of the drainage, and means moved incident to. the operation or said: counteracting means, first to operate so as: to resist descent of said piston and then to operate so as to assist said descent, successive: stages oi the descent, and then first to operate so as to resist of said piston and their to operate so as to; assist said ascent, in successive stages 01% said ascent.

12. Water service: apparatus comprising a. riser and a reservoir into which drainage passes; from the riser for storage afiter each use of the apparatus, and means tor. exerting thefiorce of water newly admitted; to the apparatus wpon said drainage, to dispose said drainage out of the reservoir, said apparatus: comprising means whereby-the disposed drainage is conducted into the riser under. said force, said; force-exerting" means cornprising a motor driven. by said. newly admitted water, and a pimpdriven by said motor to eiiect the: disposal or the drainage out of the. reservoir,

and said apparatus also including air-holding means holding air in common withsaid! reservoir, capable of operation to'increase its air capacity as the drainage passes into; the reservoir, and

capableozt' operation to. decrease its air capacity as. thedrainage disposed'oui offthe reservoir,

said pinup, motor and air-'holding means being assembled a unit for removalfrom and replacement into operative'rel'ation to said riser and sat reservoiri 123.. Water service apparatus comprising a. riser and a reservoir into which drainage passes from riser for storage after each use of' the apparatus, and means: for exerting the force of water newly admitted to the apparatus upon said dramage, to) dispose said drainage out; ofthe reservoir, said apparatus: comprising means whereby the disposed; drain-age: is conducted into the riser under said force; and also comprising flow-control means having operations, respectively; for permitting admission of the: forcing water audlsiiopping said admissitm, and a control; device operati ve upon admission-permitting operation or said flow control meansfto assumea preventive relatiorrto said ifio vv-coutrot means whereby it preventsadimissioii-stopping operation of said; flowcontrol means, saidv devi'ce haiving. a subsequent operation, response to a terminal stage of reduction of volume of drainage. in the. reservoir tore.- store said control device out oi'said preventive relation to permit the admission-stoppingoperation ozfi said flow-control means.

11. Water service apparatus comprising 'a riser and a reservoir into which: drainage passes.- from the riser for storage after each use; of the' apparatus', and means for exerting". the force of water new-1y admitted to the. apparatus upon said drain age, to dispose said drainage. out oi the reservoir, said: apparatus. comprising means whereby' the disposed. drainage is. conducted into the riser under said force, a flow-control structure having mrrverrentsrespectively; to permit or stop admits:-

' sionl oi the: forcing water to: the. force exerting apistorr which movable in response to move ments of air due to changes or volume at the drainage iIrthe reservoir. j Q

16-h Water service apparatus as set forth in claim 14, which is included a 'casi-ngi'and a liner withdrawableand insertibl'e out or and into the casing, as a part of the riser" and along with the flow-control structure, said'lirier being the therein; mentioned member fined relative. to the flowcontrot structure having an opening through its: as the therein mentioned detent means, a first element movable on the casing anda second element movable said opening, as parts of the. therein mentioned control structurerela ted to thedrainage, said casing having an opening in its wall admitting said firstiel'ement to engage said second element; said second element beingmwable by' said elementfor engaging the bolt to: move it out of its? detaining relation, and said second element being wholly contained within said of said liner-when it has moved said bolt out of said relation, whereby said second element is; out of retentive'engagement with said casing 13 and permits the withdrawal and insertion of said Number liner. 1,216,815 JOHN T. MCGARRY. 1,610,454

REFERENCES CITED The following references are of record in the g g file of this patent: 25159 UNITED STATES PATENTS 91165 Number Name Date 10 932,240 Beal Aug. 24, 1909 Name Date Kelly Feb. 20, 1917 Lawaczeck Dec. 14, 1926 FOREIGN PATENTS Country Date Germany Oct. 10, 1879 Germany 1883 Switzerland Nov. 16, 1921

Images