US 2598708 A
Beschreibung (OCR-Text kann Fehler enthalten)
June 3, 1 J. w. M GARRY ET AL WATER SERVICE DEVICE 2 SI-lEETS--SHEET 1 Filed Feb. 1, 1946 'INVENTORS C/mes W Mc'arzy BY 195w! A fed? June 1952 J. w. MOGARRY El AL WATER SERVICE DEVICE 2 SHEETS-SP 2 Filed Feb. 1, 1946 IN V EN TORS flc' Garry rd H. [ads 4 M W 3 flfly.
C/ames W y Hon/a Patented June 3; 1952 UNITED STATES OFFIIE WATER SERVICE DEVICE James W. McGarry and Howard A. Eads, Cincinnati, Ohio, assignors to Railroad Products Company, Cincinnati, Ohio., a.v corporation of Ohio Application. February 1, 1946, Serial No. 64 L687 7, Claims. 1
This invention relates. to a. water-service device or hydrant for the delivery of potable water from amain or other source of water under'pressure.
An object of the invention isto provide an improved water-service device-which is self-drain ing and therefore protected againstfreezing, and incorporating, means to, render it free;- of: backsiphonage and the possibility of pollution.
Another object. is to provide improvements in a waterservice device having the foregoin .features, including structureto protect the; device from all' outside sources of contamination;
Another: object is to provide suchadevice, with simple and reliable means for visually indicat. ing; the operating; conditionthereof, at all times;
A further object is to provide a device of the character stated, which is fully automatic and substantially free of maintenance expense and servicing; diflicultiesxthe; niechanismthereof. be n arranged for easy access, however, in the. replacement or repair of wearing parts.
Another object is toprovide simple I neans-v tor the selective transfer of waste water to. either. a sewer-or a drainage pit, as-may be desired.
A further object is to simplify the mechanism and. reduce the cost of production. of. a. device embracing all of the advantages and; meritorius features aforesaid.
The foregoing and other objects are attained byqthemeans describedherein and illustratedin the accompanying drawings, in. which:
Fig. I is a side elevational.view;v partly in cross section, showing the improved water service device of the invention.
Fig, 2: is an enlarged cross-sectional View of an ejector mechanism constituting; a detail of the invention.
Fig; 3 is an elevationalv view of an ejector con.- trolvalve stem.
Fig- 4. is an enlarged perspective view of an ejector control valve actuator.
Fig, 5 is a fragmental, elevational view. Partly in cross section, showing a platform of flush type hydrant which might be substituted for the pedestalhydrant illustrated in Fig. 1.
Fig. 6 is a viewsimilar to Fig 5, showing a modification of the platform or flush type; hydrant.
Fig. '7 is a. fragmental side elevational View of the hydrant housing; illustrated by Fig; 1-.
Fig. 8 is av frag-mental cross-section taken on line 8-8 of Fig. 7.
Water service hydrants-frequently are installed in locations where sewer or drainage condition are. poor, and wher poor drainage or .flat; tel.-
rain. resultin contaminated water accumulating and: standing about the hydrant. Such conditions presenta problem of; contamination or pollutionof; potable water supply lines connected with the hydrant, through back-siphonage or other conditions prevailing to contaminate the interior of the hydrant and the water supply line connected thereto. Many different types of hydrantstructures have been proposed in the effort toovercome problems, of potablewater Slip plyline: pollution resulting from the conditions mentioned. above, or from conditions of a similar nature; but in the past such structures have proven objectionable clue to their complexity and the cost of maintaining them in an operating condition. One of the primary objects of the present. invention is to produce a simple, fully automatic; and highly serviceable hydrant structure which will protect the potable water supply line; under; all adverse conditions encountered at the site of installation. Other desirable features of the device have been previously set forth in the objects previously specified, and others may become manifest as the description proceeds.
Referring to Fig. 1 of the drawing l2 indicates the. housing of a pedestal type hydrant which stands above the ground line or platform level indicated. at I:3. Beneath the. line [3 is a reservoir. assembly indicated generally by the character l,4, and which includes certain operating mechanism disposed at a proper depth to avoid the possibility of freezing during the winter season. Apotable water supply line delivering Water to-thehydrant structure is indicated at [5. The supply line feeds a pipe section It which enters a T-fitting H. which in turn is connected to a valve body l8 containing a longitudinally slidable valve head, 19. the, valvehead being normally held against a valve seatZO to prevent aflow of Water upwardly through the hydrant structure. The valve l8 may be substantially of conventionaldesign, and, will include a drain port 2| which is uncovered when the valve is seated, so that water may not stand and freeze within the riser 2-2 which. conveys water to the hydrant nozzle or outlet 23 subsequently to opening and closing movements of the main. valve I9. As will be understood, drain port 2| is covered andclosed by valve head, l9 whenever the valve head is lifted from its seat 21 to initiate allow of water to the hydrant nozzle.
Themai-nvalve head l9- may be vertically actuated in any suitable manner, and with the use of; conventional means if desired. For the purposes of the present explanation, the valve head Jburied reservoir assembly l4.
including dome portion 31 may be in two parts,
is fixed to the lower end of a valve stem 24; the
upper end 25 carries a stem head 26 surrounded by a. compression spring 2'! which acts constantly upon a flange 28 of part. 26, to yieldingly maintain a seated condition of the main valve. The reciprocating part 26 may carry at its upper end a pivot 29 on which is mounted an actuating handle 36, said handle including a cam face 3| to engage the top of the hydrant cap 32 upon elevating and rotating the handle upon pivot 29; As the handle is moved toward an upright position, the toe of the cam bears upon the hydrant cap and draws the valve stem upwardly to unseat the main valve and establish a flow of water through the hydrant nozzle 23.
provide a hollowed dome 31 which serves as a protective cover for the upper portion of the The housing i2 or of split'construction, opposite halves thereof being fastened togetherby means of suitable bolts or screws-38 projecting therethrough. The base of the housing may rest upon any surface indicated by the line IS.
The opposed halves of the dome portion 31 of the housing are depressed inwardly to provide a recess as indicated at 39 of Fig. 7, said recess having an exposed upper wall 40 and a similar lower wall 4| located directly beneath it, 'both of said walls being provided with vertically alignedapertures 42 and 43. These apertures in the'recess walls constitute means for visually indicating the operating condition of the faucet mechanism, as in the normal operation of the device there will be evident at intervals, a stream of waste water passing from opening 42 to open-. ing -43, the stream being observable exteriorly of the hydrant housing due to. the exposed character of the openings. The stream of water mentioned emanates from the waste water spout 44, and is projected throughthe openings 42 and 43, by the spout as the waste water is supplied to the latter at periodic waste water displacement cycles occurring within the reservoir. Waste water dischargedfrom spout 44 through the, openings 42- and 43, enters the open upper end of a pipe or tube 45 located beneath the wall 4| of recess 39. By means of pipe 45, the waste water may be carried away from the vicinity of the hydrant.
' such as is commonly used for drainage water dis-1 posal purposes. Waste water from the instant servicedevice may be directed selectively to a pipe such as connected with the' sewenor to a At 33 is indicated a suitable packing arrangement for pre- 4 similar pipe at the opposite side of the housing, connected with a drainage pit or the like, by simply swinging the spout 44 on its vertical axis until the opening of the spout registers with an opening such as 42 of the waste flow indicator means. From the foregoing, it will be understood that spout 44 may be swung through a limited arc at its threaded connection 46, shown'in Fig. 1. The single swingable spout 44, and the recesses 39 at opposite sides of the dome 31, constitute alternative waste flow indicators which may be seen by an attendant as he walks past the hydrant in the performance of his regular duties. Should the attendant observe that no waste water flows through the visual indicator at intervals, he will know that the Water service device is not operating properly, and the fact may then be reported to the maintenance man. It is to be understood, of course, that only one of the waste flow indicators will be in operation in any particular installation'. If the waste water is directed to a sewer, one indicator will be used, whereas if the waste water is directed to a drainage pit, the other indicator will be used, the use being selective'by reason of the swinging of spout 44 toward one side or the other of the housing dome 31. v
Attention is now directed to the operating mechanism which is below ground level and housed within the reservoir M. It may first be noted that reservoir M, in the preferred construction, willcomprise a pair of upright cylindrical tanks 41 and 48, said tanks providing adjacent chambers 49 and 50 which are placed in fluid communicative relationship by means of a nipple 5| located near the bottom walls 52 and 53 of the cylindrical tanks. Along a line 54 where the sidewalls of the tanks abut one another, the tank walls may be welded or otherwise fixedly secured together to furnish a unitary reservoir structure. It may here be noted that the nipple 5| passes through the walls of both tanks, and will preferably be welded thereto in a'manner such as to avoid-leakage of water from the insideof the tanks to the earth, or vice versa. The bottoms of the tanks are carefully applied and welded inplace, likewise for the purpose of precluding contamination of the chambers 49 and 59 from outside sources. To tightly seal the tanks at their upper ends, each maybe provided with a tightly fitted annular bushing member 55 threaded interiorly to detachably mount the leak-proof caps 56 and 51. To obtain a tight connection at'the cap threads, the threads will desirably be tapered in the manher of pipe'fitting threads. The riser tube casin 35 is applied to reservoir cap 51 at the tight threaded connection 58,'and is closed at its upper end by means of the casing plug 36 to prevent entry of foreign substances into the'rese'rvoir chambers. As will be understood, the waste pipe 45 is located exteriorly of the tanks 41 and 48, so that'no contamination is risked at that location. From the foregoing it will be'understood that the reservoir chambers are thoroughly protected from contamination from outside sources. The fitting 59 at the potable water supply line is leak-proof, of course.
Tank 41 contains the potable water supply line, the faucet control valve |8,and the riser 22. This tank receives all water drained through the port 2| from riser 22, at each closing movementof the main valve. This drain water,;of course, is potable and as clean as the water of the supply-line.
After every closing movement of the main valve, a quantity of water equal to the capacity of riser 5 enters ta nk'fl throughthe drainpo'rtZ-l, as this port isopen whenever the main valve is closed! The'drainage water is'permitted to enter the tank 48' through the connecting nipple 5|, displacing air at the sli oint 5?, so that the water level in both tanks-will-always be equalized;
Tank 48 constitutes a float chamber and a compartment in which is-disposeda drain water ejector indicated generally by the character 62!; The ejector is so associated with thefloa't 6| as to go into action for displacing drainage water fromthe tank chambers before the level of drainage water reaches the elevation ofthe ejector and the main valve I8. Drainage water displaced by the ejector is conveyed from the open lower end of asuction pipe 62 through the ejector discharge pipe the upper end 54- of which is influid communicating relationship with the swingable spout 44 ofthe wasteflow indicator. From the general 'descriptio'n above given, it may readily be'understood' that the'operationof the ejector is controlled by float 6|, so that whenever the waste water from port 2| reaches a predetermined levelin the chambers 4-9 and 5D, the ejector will'be placed in operation tosubstantially empty the chambers of waste water;
With particular reference to the ejector, it may be noted that this element is associated with a housing 59 having an inlet chamber 65 connected to the supply of'water under pressure by means of the tube or extension 66 of the T- fitting I 1; Tube 66- has a threaded connection vwith afitting 61' that extends through the tank walls, and this fitting in turn is provided with a fixed upstanding nipple 68- disposed within the float chamber. 'Nipple 58 is extended vertically within the chamber; and has a smooth upper end 69, preferably tapered and reduced, so that it may enter a gland nut 'l'El of the ejector control inlet, the nipplehaving a slip fit within the nut and within a gasket H heldin place by'said nut. Theslip joint between the nipple 5 8 and the ejector inlet should be reasonably leak-'- proof, although any small amount of leakage at the joint will not defeat the anti-pollution characteristic of the device.
Flow of water under pressure from the supply line-may not normally occur through the ejector, because of the normally seated condition of the pilot valve 12 closing oil the ejector control inlet chamber 65 from the outlet chamber 13 thereof. This pilot valve, however, is to be unseated by the action of float 6| when elevated to a predetermined extent by an accumulation of drained water within the reservoir chambers. Whenever the pilot valve 12 is unseated, water under pressure from the supply line will pass through the ejector control housing 59', entering the ejector 60 through the pipe connection 14; The ejector may be of standard design, and will include a nozzle or jet [5 delivering water under pressure to the venturi 16', which creates a vacuum in chamber l! to lift drained water from the float chamber through the suction pipe 62. suction pipe 62 leaves the reservoirthrough tubes 63" and 44, this action being common and well known in the operation of all types of ejectors. The ejector will remain in operation as long as the pilot valve 12 is held open by the action of float 6i. Asthe float reaches its lower limit of travel, however, it will permit closing of the ejector control or pilot valve 12', thereby terminating the action of the ejector so that drained Water from the hydrant riser 22 may again ac- The discharge from the jet and from'the' l 2 may consist of'an uprighti linkl tpivotedlas at 19 to-thetop ofthe float; Link la is provid'ed with an elongated slot which slidingl y accommodates a pin 8t carried by the forked end 82: of a cam lever 83 disposed above the" float; To the lever 83 is-fixedly'applieda cam 84 which at 851 is pivotallymounted upon" abracket 86' extending from the housing 59 of the ejector control valve. A finger 81 on the cam extends upwardly for reception in; an opening or socket 88 provided by-a head 89 fixed to-theouter end of pilotvalv-e stem- 911 Accordingly; as the camis rocked about its pivot 85, the finger 81' will act upon valve stem head 89 to reciprocate stem- 91) to open and closed valve positions: Valve stem: 90 may be packed to preclude leakage, as indicated a-t'9l-.
The edge of cam- 84 preferably is: provided with apair of notches 92 and 93 in which may seat alternatively the head M of a leaf spring 9'5, the latter having itsbase' end- 9B fastened to the ejector control valve'housingat the location 9 In the lowered position of float 6!, the head of the leaf spring engages the lower notch 93; and this engagement persists until the float elevates sufficiently to bring the abutment19$ of link slot Shinto firm contact. with the pin- B l; of the cam lever. When the upward force imposed upon the cam lever by the: buoyancy ofthe-float reaches a sufiicient value to displace: the spring head 94 from cam notch 93, the cam willbe roitated about its pivotal mounting sufficiently to place the upper notch 92' in engagement with the spring head. Concurrently with this. action of the cam, finger 81* will shift the valve st'em for opening the ejector control valve 12, whereupon the ejector will be placed inoperation to immediately beginto perform its function of displacing drained water from. the reservoir and thereby lowering the water: level. As the water level is lowered, the float 61 moves freely downwardly a. distance corresponding: to the length of link slot 89', until theupper end 9.9 of the link slot engages the camlever pin 81 Because of the restraining action of spring head M then engaged in the upper notch 92 of the cam, the cam will not immediately be rocked to close the ejector control valve, but instead, the closing movement will be delayed until the weight of the float is in effect sufiiciently increased by the continued lowering of the water level in the reservoir, to overcome the restraining action of the leaf spring head 94 upon the cam: It will therefore be understood that the displacement of practically all the water from the reservoir will permit the full weight of the float to act upon the spring 95' to dislodge it fromthe upper cam notch 92, thereby returning the parts to the normal operating condition of the 'water service device, at which the ejector control valve 12 is closed. Adjustments of the force of spring 95 necessary to produce the desired reaction upon the cam, may be effected in any suitable manner, as by varying the thickness of a; shim I00 which supports the base end of the spring.
Referring further to the float til, it is to be noted that'this element comprises a buoyant cylindri'cal' can, preferably with atop wall NH which is centrally apertured to support a longitudinal sleeve I02 serving as a guidefor the float in its vertical movements along" the suction pipe 62. The bottom wall, I03 of the float likewise 1 is apertured at its center and supports the lower 1 this arrangement, it will beunderstood a rising level of .water within the reservoir will begin to buoy thefioat as soon as the Water reaches the lower end of sleeve I02, and that further elevating of the water level will result in an entrapment of air within the space directly beneath the bottom wall I03 of the float. As the float approaches its upper limit of travel and meets resistance imposed by spring 95, the entrapped air beneath, the float is compressed to a certain limit, until'the spring finally yields, and the suppressed buoyancy of the float augmented by the stored force of the entrapped air, thereupon acts to vibrate or jiggle the float with suflicient force to overcome any tendency of the pilot valve stem, the float linkage, its pivots, to stick or bind. Again, upon descent of the float as the water level reaches its lower limit'within the reservoir, a suction will be created beneath the float resulting in a vibratory movement for'the same purpose. By meansof this construction, the operating parts of the float mechanism are kept in a freely operating condition with every cycle of operation of the device, so that maintenance and servicing due to corrosion and they be guided by other'means. if desired. 7 Figs. 5 and 6 of the drawings are presented for the purpose of illustrating how the device of Fig.
1 may beconverted from a pedestal type hydrant, to a hydrant of the flush type sometimes referred to as platformtype of hydrant. As is obvious,,the housing I2 from the ground line I3 upwardly, may be lifted bodily from that'portion of the device which is buried in the earth. The pedestal or housing I2, when displaced, exposesthe reservoir caps 56 and 51 which may be then covered by the structures illustrated by Figs. 5 and 6. In these drawing figures, the same caps As will be under stood, the suction pipe 62 may be used as a guide for the float; however, the float obviously may and tanks as are illustrated by Fig. l, are shown.
Inaccordance with Fig. 5, the riser 22 has been shortened and at its upper end there is applied a fitting I0'I corresponding to the hydrant stock of Fig. 1, differin therefrom in that it is more squattyv in design and h aving a threaded outlet indicated at I08. The operating handleI09 maybe similar to that of Fig. 1, and may operate 'inthe manner previously explained for lifting the main valv rod to permit a flow of potable water to the outlet I08. The outlet may be the sunken box II8, as indicated at I19.
From the foregoing, it will be understood that swinging the lid to the open position about its hinge mounting II9, will bring the coupler I I5 into convenient position for the attachment of a complementary coupler, the latter being usually fixed to one end of a rubber hose or the like used for flushing purposes, or for filling tanks or other receptacles with potable water. When such hose is not in use, it may be detached from coupler II5, whereupon the lid III may be closed upon the rim I20 of the box I I8.
At the location I2I, the bottom I22 of box II8 may be apertured to accommodate the waste water pipe 45 previously mentioned in connection with Fig. 1, and into this pipe may be discharged the waste water ejected through the swing spout 44. With the hydrant stock I01 securely mounted upon the cap 51 at the location I23, all of the mechanism enclosed by means of the caps 56 and 51 is protected against contamination from any substances that might enter the service box H8. The box may be furnished with a side outlet I24 if desired, to ensure drainage of polluted water that might seep into the box about the rim I20; however, the box rim will preferably be elevated somewhat above the ground line I3 to avoid entry of water-borne foreign substances.
A preferred form of water service box is illustrated by Fig. 6, wherein the hydrant stock and its associated mechanism are indicated generally by the character I25. In this instance, the outlet I26 is fixedly attached to one end I2'I of a flexible hose or the like I28, the opposite end I29 of whichis located above the level of the box rim [30. A coupler I3I, similar to the coupler II5 of Fig. 5, is fixed at I32 to the inside of a crown lid I33 which is considerably above the box rim I30. It will be seen by referring to Fig. 6, that the water service box'I34 may be filledwith contaminated water to the height of its rim, without subjecting the inlet I35 of the coupler to contamination or pollution. The lid I33 may be hinged to the service box at I36, and as evident, the coupler I3I moves with the lid when swung to the open position, by reason of the flexibility of hose. I28. The service box of Fig. 6 may be equipped to accommodate a sewer pipe such as 45, if desired, while under certain circumstances the swing spout 44 may be permitted to discharge directly into the service box, the latter being furnished with a drain pipe I3'I leading to any convenient depository for the waste water ejected from the reservoir comprising tanks 41 and 48. The manner in which waste water is led from the service boxesof Figs. 5 and 6, is a matter relatively unimportant to the invention. It should readily be evident, however, that flush boxes of a type illustrated by Figs. 5 and 6 can be substituted for the pedestal hydrant of Fig. 1 without difliculty, whileat the same time retaining all of the advantages inherent in "the pedestal hydrant as previously noted.
The air gap between the ejector discharge spout 44 and the drain pipe, is in each instance made sufliciently extensive to avoid all possibility of back-siphonage that might introduce polluted water or contaminating substances into the potable water supply line. Whenever it is possible to do so, the spout 44 is placed atan elevationabove the ground line I3, or such other surface as might support a stand of extraneous impure water. a I
In the event that any wearing parts of the apparatus within'the buried reservoir should require replacement or repair, such parts are rendered easily accessible byreason of the fact that the pedestal housing may readily be lifted from covering relationship to the reservoir caps 56 and 51. In, the caseof the main valve [9, it is necessary only to detachthe hydrant stock and lift the valve stem vertically upwardly from its position within the valve housing 18. Valves may quickly and easily be replaced in this manner. Should it be necessary to have access to the float .and ejector mechanisms, it is necessary-only to remove the hydrant housing 12, whereupon the reservoir cap .56 maybe unscrewed from the bushing 55 and bodily removed to open the upperend of the tank, so that the complete unit consisting of the float -6l,.suction pipe 62, ejector 60, housing .59, and discharge pipe 63, may be bodily lifted out of the tank, this operation being permitted and facilitatedby reason of the slip joint provided at the nipple B8. The :connection between the cap 56 and the upper end 64 of the ejector-discharge pipe 63likewise is a slip joint, which involves no interference with bodily removalof cap 5B. After thefloat and ejector unit has been bodily lifted from tank 48, repairs or .replacements maybe made thereon, or as an alternative, a complete replacement unit may be substituted therefor. It will accordingly be understood that maintenance costs may be reduced to aminimum in a device constructed as disclosed herein.
In the case of the flush boxes, access to the reservoir caps 56 and the mechanism beneath it, may be had by simply removing or displacing the flexible hoses H3 or I28, whereas main valve replacements are usually effected by removing the hydrant head or stock and pulling the main valve and stem from the riser.
Various modifications and changes in the details of construction may be resorted to, within the scope of the following claims. For example, the actuating mechanism for the pilot valve might be altered in form, and the float may be guided otherwise than by means of a suction pipe 62. The'particular type of ejector 60 employed in the combinationis a matter of immateriality to the invention, since many forms of ejectors are available for use in the combination. Likewise, many 'formsof-main valves 18-19 are available for use in the device, and actuating means therefor need not necessarily be of the type illustratedatthe upper end of the'hydrant stock. The buried reservoir will, of course, be constructed of materials capable of withstanding the destructive effects of oxidation and chemical reactions which usually take place in the earth.
What is claimed is:
1. A device of the class described, comprising in combination, a hydrant having an outlet for the delivery of water, an upright riser tube having connection with a source of water under pressure near its lower end, and with the hydrant outlet near its upper end, a main valve in the riser and means for opening and closing said valve, the valve including a port to drain the riser upon each closing movement of the valve, an upright elongated tank for embedment in the earth and enclosing the main valve and a portion of the riser, said tank including a displaceable sealing upper cap, a second upright tank substantially coextensive with the first, and including means placing the tanks in fluid communication near lower ends, a displaceable upper cap sealing the second tank, a water pressure connection extending from the source of supply and terminating in the second tank, and a bodily displaceable float-operated ejector assembly in the second tank having a slip-joint connection with the terminus of the water pressure connection, whereby said assembly is rendered instantly 10 displaceable vfrom the. second tankas a unit, upon removal of the-cap of said second tank.
2. A device of the class described, comprising in combination, a hydrant having .an outlet Iior the deliveryof water, an upright .riser tube hay-'- ing connection with a source of water under pressure near its lower end, and with .the hydrant outlet near its .upper end, a main valve .in the riser andmeans for opening and closing said valve, the valve including .a port to drain the riser upon each closing movement of the valve, an upright elongated tank for embedment .in the earth and enclosing the main valve and a portion of the riser, .said tank including a displaceable sealing upper cap, a second upright tank substantially coextensive with the lfirst, and including means placing the tanks in fluid communication near their lower ends, a displaceable upper cap sealing the second tank, a water pressure connection extending .from the source of supply and terminatingin the second tank, and a bodily displaceable float-operated ejector assembly in the second tankhavingaslipjoint connection, whereby said assemblyis rendered instantly displaceable from thesecond tank as a unit, upon removal of thecap .of said second tank, and means above the tank caps for visually indicating exteriorly of the hydrant, :the flow of drained water displaced .from the tanks by operation of theejector assembly,
3. .A device of the class described, comprising in combination, .a hydrant having an outlet ior the delivery of water, an upright riser tube .having connection with a source of water under pressure near its lower end, and with the hydrant outlet near its upper end, a main valve in the riser and means for opening and closing said valve, the valve including a port to drain "the riser upon each closing movement-of the valve, an earth embedded reservoir receiving and accumulating the drained water from said port, said reservoir including a discharge pipe extending to the exterior of the reservoir, and adownturned spout communicating with saiddischarge pipe, to direct-the drained-water'downwardlyoutside the reservoir, and an exterior waste receptacle, the spout being spaced from the receptacle to provide an air gap, avoiding back-.siphonage.
4. A device of the class described, comprising in combination, a hydrant having an outlet for the delivery of water, an upright riser tube having connection with a source of water under pressure near its lower end, and with the hydrant outlet near its upper end, a main valve in the riser and means for opening and closing said valve, the valve including a port to drain the riser upon each closing movement of the valve, an earth embedded reservoir receiving and accumulating the drained water from said port, a discharge pipe extending from the interior to the exterior of the reservoir, a hollow base for the hydrant having a recess therein with spaced upper and lower apertured walls, the apertures of said walls being exposed exteriorly of the base and vertically aligned, a waste receptacle directly beneath the lower wall aperture, and a down-turned spout in the hollow base communicating with said discharge pipe and overhanging the aperture of the upper wall of the recess in spaced relationship, to direct a stream of discharged water through both of the aligned apertures and into the waste receptacle beneath them.
5. A device of the class described, comprising in combination, a hydrant having an outlet for the delivery of water, an upright riser tube havf a er ure an earth embedded reservoir receiving andaccumulating the waterfrom said port, said reserexterior of the reservoir, a hollow base for the hydrant having a recess therein with spaced upper and lower apertured walls, the apertures of said walls being exposed exteriorly of the base and vertically aligned, a wastereceptacle directly means mounting the down-turned spout for swinging rimovement out of alignment with said 6. A platform type of water service device comprising in combination, a drainable box for em bedment beneath a surface, said box having a bottom wall and a circumferential rim for dis- 1 coupler fixed to the box lid, and a flexible con- 1 duit for the delivery of water from the hydrant outlet to the hose coupler, an upright riser tube 1 having connection with a source of water near 7 its lower end, and with the hydrant outlet near its upper'end, a main valve in the riser, means i in the box for openingand closing said valve, the
valve including a port to drain the riser upon each closing movement of the valve, an earth determined level in the reservoir, for substantially emptying the reservoir.
7. A platform type of water service device com- 12 prising in combinatioma drainable box forembedment beneath a surface, said box having a bottomwall and a circumferential rim forfdisposition near said surface, a lid hinged for swinging movement upon the box to open and closed positions, a hydrant stock within the box and normally concealed by the lid, said hydrant voir including a discharge pipe extending to the 1 1 embedded reservoir receiving and'accumulating the drained water from said port, and means operative when the drained water reaches a prestock having an outlet within the box, ahose coupler fixed to the box lid, and a flexible conduit for the delivery of water from the hydrant outlet to the hose coupler, an upright riser tube having connection with a source of water near its lower end, and with the hydrant outlet near its upper end, a main valve in the riser, means in the box for opening and closingsaid valve, the valve including a port to drain the riser upon each" closing movement of the valve, an earth embedded reservoir receiving and accumulating the drained water from said port, means operative when the drained water reaches a predeter mined level in the reservoir, for substantially emptying the reservoir, the means last mentioned including a discharge pipe extending to the exterior of the reservoir and terminating within the drainable box above the level of its bottom Wall.
JAMES W. McGARRY. HOWARD A. EADS.
REFERENCES CITED 7 The following/references are of record in the file of this patent: I
V UNITED STATES PATENTS Number