US1447342A - Hydraulic rams - Google Patents

Description

Mar. 6, 1923 ,447,342? 1 MEANS FOR CONTROLLING HYDRAULIC RAMS Filed May 28, 1921 7 sheets-sheet 1 fi Madame INVENTOR.

ATTORNEY-15.

Mar, 6, 1923. 1,447,342

D W. DODSON MEANS FORI'CONTROLLING HYDRAULIC RAMS Filed May 28, 1921 '7 sheet-sheet 2 INVENTOR.

I I {L r M2 I ATTORNEYni D, W. DQDESUN MEANS FOR CONTROLLING HYDRAULIC RAMS Filed May 28, 1921 7 sheets-sheet 5 "INVENTOR.

A TTORNEYrE'l Mar. 6, 1923, 31314123 52 W. DODSON MEANS FOR CONTROLLING HYDRAULIC RAMS Filed May 28, 1921 7 sheets-sheet 4 Mffiadawa INVENTOR.

A TTORNEYdi Man 6, 1923.

' D. W. DODSON I MEANS FOR CONTROLLING HYDRAULIC RAMS Filed May 28,- 1921 7 sheets-sheet 5 W a 1 {1? .I 5@ w A/fl I. W a v I n JNVENTOR.

I BY ATTORNEYS,

Man, 6, 1923 ax:342

" D. DOD$ON MEANS FOR vCONTROLLING- HYDRAULIC RAMS Filed May 28, 1921 '7 sheets-sheet 6 Arrozwms.

Mail 6, 19231 1,447,342

D. W. DQDSON MEANS FORVCONIIROLLING HYDRAULIC RAMS Fi led May 28, 1921 7 sheets-sheet 7 R l ZK fl@dswa, INVENTOR;

Patented'lvlar. 55, 19233.

nuirsn I/ililAhl'El FOB,- CUR l (3 cy .oo,

To all iii/20m may ounce m. V

l c it known that l, Drains): ll Demo's, a. citizen of the United States, residing at llorrauceton Borough, in the county of Lu- Zernc and litate of Pennsylvania, have in rented certain new and useful lnxprovnents i rt-1s tor Controlling lilydraulic Rams; and do hereby declare. the :lfollowing to he a full, clear, and exact description of the inveniioiu such as will enable others skilled in. the art to which it appei'tains to make and use the same.

This invention relates to hydraulic rams and more. particularly to means, automatically actuated and controlled by a stream ot' water sluinted through conduit from the spring or other head of water whence the rain derives its impetus current through the drive pipe for keeping" the ram in continuous oper on as lo as the water supply in the spring, drive tr uh, or other resew voir is high enough to feed the shunt conduit.

In so tar as l am aware the usual practice in. the installation oi? rams herctotore has been to measure the flow, from the pro i osed sou roe of water supply, in gallons per minute at time or normal supply, estimate the minimum tlow, and install a ram that will operate normally and continually with the minimum flow. At time of measure.- ment the water supply may be ample to keep a rain in operation; but drought may reduce the supply below the requirements of any ordiuai'v ram.

Pis a consequence of reduction of low hclow the estimated minimum the ram to operate. A trip to the ram is then necessary for the purpose of closing the impetus valve in order to allow the spring or reservoir to till: then another trip to open the valve in mailer to start the rant, which then (moi-ates hrieit period and aga n. dies or ceases-1 to operate; whereupon the operations have to be repeated. iv reason of the failure rams to continue in operation. during; periods of low wa ter ply and the excessive annoyances due to the coiistaut at ention required to start start them, they e failed to come the extensive use which the simplic' it the principle involved in their operation and the low cdst of installation and maintenance in localities; to which they are adapted would seem to iustily.

l t is the general. purpose t my invention DltAULIC TIA BIS.

192 serial No. 273,351.

to cause rams to continue in action without attention as long as there is any water flowing into the spring or other reservoir of supply.

.in order to achieve the purpose of this invention I have devised means including a gavity motor controlled by a shunt tlow it'ron'i the soiiirce of supply to quickly drive the valve from its seat to start the ram; means actuated by the motor to wedge the val against its seat automatically and hold it there pending an accumulation of drive water sutlicient to again close it after it has len opened; an improved stop for limiting advance of the means for holding the sPnLVS closed so that the said holding means will not obstruct the full movement of the valve under the impetus of the drive water; means to lift the stop tree of the path. oi the valve stem in its movement; means to stop the intermitting operation of the motor, controlled by flow of water escaping through the port of the impetus valve; an adjustable housing or frame work for supporting the several means aforesaid, a shuntconduitcomprising an improved siphon adapted to afford an even and steady flow of water for operating the motor, and various suhcombinations and details of construction more fully pointed out in the ensuing; description, defined in the appended claims and illustrated in the acompanying drawings.

In the drawings, in which like reference characters indicate like parts throughout the several views;

Figure 1 is an elevation of my improved rain controlling mechanism showingthe impetus valve locked up in closed position and the motor ready to operate;

Figure 2 is an elevation oi the same mechanism that shown in Figure 1 but with the motor mechanism in the position assumed after it has operated to open the impetus valve;

Tio ure 3 is an elevation of the motor mechanism viewed from the right of Figure Figure 41- is an elevation of the motor mechanism viewed from the left of Figure 2:

.Figure is a section on the line 5-5 of Fie'ure: 3, viewed from the left;

Figure 6 is a section disclosing the Darts as are disclosed in Figure 5, but in the position assumed during the descent t the 2 la iness gravity spill pan after it has caused the impetus valve to be unlocked and is causing said valve to descend.

Figure 7 is a vertical section on the line 7-7 of Figure 4: viewed from the right.

Figure 8 is a diagramamtic illustration of a drive tank or supply reservoir, drive pipe, shunt supply and ram with the improved control mechanism of this invention applied thereto;

Figure 9 is a view of an improved siphon designed to afford a steady even flow from the reservoir to the shunt conduit;

Figure 10 is a bottom plan view of a leal: bucket for controlling the operation of a switch motor, and

Figure 11 is a section through the housing in the plane of the axes of clamping bolts 3.

In the drawings a is a conventional representation of a hyoraulic ram; 7) a reservoir of water such as a drive tank adapted to receive flow from a spring; a a drive pipe conducting water from the reservoir to the ram; d the mechanism for starting and continuing the operation of the ram when conditions have interfered with its normal operations; e the automatic switch for preventing operation of the starting and controlling mechanism d when the ram is operating normally; the pipe through which water is delivered by the ram; and g the shunt pipe leading from the spring or drive tank for supplyingwater to actuate the starting and controlling mechanism.

The casing of the impetus valve of the ram a is indicated at a, the valve seat at a and the impetus valve at a said valve being adapted as well understood, alternately to close in response to the pressure of water rushing from the drive pipe, and to open under the influence of gravity after the rush of water has been checked. The valve casing a is open at both sides above the valve seat to permit escape 01 water, and, in the e1nbodiment shown, has two opposite risers a supporting a centrally perforated bridge (0", from which a hollow guide stem (4 projects upward centrally. The stem o of impetus valve a is guided so as to slide freely in the guide at. Rigid with the valve stem o above guide a is a collar to the upper end or limit the extent of downward or opening movement of the valve and to be eng ed by a latch or other locking member w ion the valve is closed, to temporaril said valve closed in periods when, pe-

ing normally on a supporting member con nected to the housing to be later described, and cushions the fall of the valve by engaging the collar a A housing, indicated as an entirety by the numeral 1, is secured to the stem a in such manner as to be adjustable vertically a limited extent. The base 2 of the housing has a half round vertical groove engaging the guide a. Two bolts 3 project from the side of the base 2, one on each side of the groove. At one side of the groove that fits the guide a is a smaller half rounded threaded vertical groove for receiving an adjusting bolt. A. cap member 4, provided with half round vertical grooves corresponding with those in base a and with suitable holes for the bolts 3, is secured by nuts 3, so that the housing 1 may be mounted on the guide stem a, but in such manner as to permit it to move .up or down thereon. An adjusting screw 5, threaded into the smaller vertical cavity between the base 2 and cap member l, is adapted to be rotated so as to raise and lower the housing, the end of said screw 5 bearing against the bridge a A screw 6 threaded through the cap t may be set up to secure the housing firmly to the guide a of the impetus valve casing and prevent rotation thereof after the appropriate adjustment has been made by the adjusting screw 5. Rising from the opposite side of the base member 2 are two lateral upright arms-7 and 8, the upper ends of which are tied together with a cross tie 9, preferably of brass or bronze, the latter serving as a bearing member upon which the OSCI HtOI'Y actuator oi? a gravity motor mechanism is saddled so that it may vibrate with freedom between its limits of movement, which are fixed by a stop 7 at the end of a bracket 7 secured to arm 7 of the frame, and a stop S rigid with the inner side of arm 8 of the frame. Resting on the base 2 and cap i there may be a U shaped member P if desired for supporting the washer a The oscilla ory actuator comprises a rocking lever me 10, having a wide saddle bearing resting on the tie l). he saddle hearing, at least, and preferably the lever frame, as well as the tie rod 9 may be of brass, bronze, or other metal not subject to rust or corrosion.- in the form illustrated the lever frame 1.0 has two spaced parallel arms 12 projecting at one side of the bearing 11 to support an actuator pan 13, adapted to the 1 er frame downward when it is water. Attached to the lever end opposite the pan 13 is a perweight l i, adapted to return the ne ans hold it in the position illustrated in n igs. 1, 3 and 5, when said pan is empty; it will be understood that said weight '1 will hold the pan 13 elevated until it has recei *cd water nearly to the level of its pouring nozzle 13 which is in communication with the interior of the pan by holes 13 owing to the advantage or position of said weight when the pan is elevated; whereas the pan, after it has been dropped, will remain depressed until nearly all of the water has run out owing to advantage of position when. depressed. The end and sides of pan l3 nearest the bearing 11 higher than the remaining sides as shown at 13 to permit a heavy charge of water to be received. Depending from the lever trame "L0 is a stop and actuator arm so disposed as to enga 'e stop lug 8" and limit the movement or the lever frame under the luence of? weight 14:, while the stop lug N limits the movement of said frame when. ti ted by the water laden pan 18, by engaging a member attached to said frame to be hereinafter described. hen pan 13 is in the position illustrated in Figs. 1 and 8 and. water is continually flowing from the nozzle of the shunt pipe 9, it obvious that the lever iramelO will intermi tingly oscillate deoendent upon the rate of discharge from the nozzle unless there are modifying conditions other than have thus far been described.

lln addition to the parts thus far mentioned the lever frame 10 is provided with tie plate connecting the outer ends of .rms 12; a latch retra ting arm 17; a bar i8 for engaging; a latch stop litter, a stud bearing 19 for the valve actuator trip, and a stop surface 20 for limiting the releasing); movement of said valve actuator trip, all to be hereinafter described.

l Vhen the actuator or gravity motor is functioning a spring actuated valve latch 21 e gages beneath the collar a of the impetus valve every time the impetus valve is closed or el rated, said latch 21 having a latch head 22 with abrupt tip for engaging the under side oi said collar, and curved inclined face 23, adapted to be engaged by the edge oi said collar when the valve rises in order to permit the rising; valve to push the latch aside against the tension of its spring. Figs. 3, and particularly Fig. 5 show the latch 21 holdin the impetus valve closed. The latch 21 is lorlrd at 24- and has on each prong a bearinglug 25 extending at substantially right angles to the body of the latch, the extremities of said lugs being rounded and fitted to corresponding bearing cavities 26 in the base 2 of the housing, so disposed that the of movement or the latch intersects the valve stem 4 ing outward and downward "from said base 2 is a rod 27, having a threaded extremity 27 straddled by the fork of latch 21. Curved ended lugs 28. project from the prongs of the forked latch body shown, above and from the side opposite lugs 25, for the purpose oi. receiving the pressure oi? a spring 29, tending to hold the latch in looking position when it has once been locked, or in unlocked position when it has been unlocked. An annular spring end plate 30 having cars 31 relative positions of the spring, latch and associated parts is such that when the latch 21 is forced ully bacl: a ay from locking position the no of force exerted by spring; 29 paves slightly below the pivotal axis of said latch alerting); suihcient pressure to retain the latch quiescent in unlocked position; but when the latch is locked, the line of force of said spring passes well above the pivotal axis of the latch so that after the latch is moved a little toward locking position the splin snaps it with energy to such position. is the latch head travels upward in an arc in moving to locking position, the head, en-

beneath the relatively wide collar exerts a camming action thereon, thereby powerfully forcing the inpetus valve a into engagement with its seat (5 The tension of spring 29 may be varied by adjusting the nut 32 by means of the handle On one side of the latch head is a laterally projecting latch stop engaging lug 34': as best shown in Figs. 2, 5 and 6. lhis latch stop lug is for the purpose of engaging the shoulder 35 oi a pivoted latch stop 36, in order to prevent the latch head 22 from moving; so far inward when it is set to en- ,o ag'e the collar (0 on its next upward movement that it will rest in the path of the cap o present an extended surface to the pressure oil? the collar a during its upward movement, under the influence or the water in the drive pipe. The said latch stop 36 i pivoted on a stud 87, preferably of brass or bronco. extending laterally from bracket arm 7 on the upright arm 7'. The shoulder 35 when engaged over the lug 341- permits the latch head 22 to advance under pressure of spring 29 far enough for its edge to engage the edge 01'? collar a during its upward movement, be moved aside thereby, and to snap under said collar. but not far enough to re inclined surface 23 of the latch rto the path of the cap a or the valve, to present the entire inclined surface 23 to the ibbing' friction of collar a By this means the valve is not materially obstructed should it rise while the latch is set and the p l3 :aised. In this condition the collar c o the i'sing valve, when near the upward limit of its movement, strikes the tip of latch 36, lifting the shoulder free of the ment of lug 34-, whereupon the latch head 22 springs inward into full engagement beneath the collar a so that the full force of spring 29 is exerted to push the valve a to its seat.

In order to release the latch 21 from en gagement with the collar a an arm 38 having a long laterally extending trip lug 39 is secured to the lug 34: on the latch. The trip lug 39 rests in the path of arm 17' depending from the lever frame 10, the result beingthat when the lever frame 10 tilts, by reason of the weight of water in the pan 13, the latcn will be carried back and held back by the spring 29, until the arm 15 restores it by striking the lug 39 on the other side when the lever frame 10 is restored to its initial position by the weight 1 after pan 13 has been emptied. Said lug lies in the path of arm 17) for the purpose of initiating the movement of latch 21 toward locking position.

In order to lift the latch stop 36 clear of the path of the collar a thus affording the valve an absolutely unobstructed path closing movement thereof after the latch 21 has released it, or when the actuator is held out of operation the said latch stop is lifted by the frame 10 during the downward movepan 13. For this purpose a hook 10 is pivoted at 511 to the latch stop 36 between its ends, the hooked end 42 of said pivoted hook resting always in position to engage over the bar 18 near the end of the upward movement of that end of the frame that supports weight 14-. Figure 2 indicates in dotted lines the elevated position of the latch stop when lifted by the tilting of frame 10 due to the weight of water in pan 13.

In order to push the impetus valve from its seat after it has been released by retraction f the latch 21, as before described, a powerful and quick acting lever 13 of the first order is caused to press smartly upon the cap a. on the end of the valve stem with a ramming action to unseat the Valve. Motion is given to this lever by a lost motion connechin with the tilting of frame 10 when it is tilted by the full pan 13. The said lever is pivoted on a stud 14, preferably 1 s or bronze, projecting from the inner of bi:v side ()l. frame upright 7 just beneath and a trifle at one side of the saddle'bearing or tie rod 9. Lever 13 is prevented from lateral displacement by guide 7 on bracket 7. The short arm of the lever i3 is disposed above the cap a of valve stem a W hen the pan 13 is elevated and empty as shown in Figs. 1, 3 and the said short arm rests a short distance above said cap a", by reason of a lug 43 on one side of the long arm engaging bracket 7 the short arm being overbalanced by the weight of the longer arm. The longer arm of lever d3 terminates in a shouldered end 4-6, adapted to be caught by the lateral hooked end 4 7 of a lifting and tripping member 18 pivoted to the lever frame 10 on stud 1.9. The said lifting and tripping member is over weighted at 50 so that its hooked end tends to swing to position to engage the shoulder as on the valve pushing lever d3; the lower face of the end 7 is beveled and the curved guard 46 on the lever 43, engaging said end 47 prevents the member from swinging in above the tail end of the lever 43, and the end of bracket 7 prevents it from swinging inward too far when the end 47 has passed below the shoulder 16. The member 1-8, having, as stated a tendency to swing so as to bring the end l? under the shoulder of valve unseating lever when frame 10 tilts under the influence of afull pan. the hook 4:? engages with the shoulder 46 after the frame 10 has attained a great momentum thus snapping the end 15 of lever (i3 downward upon the valve stem, with a camming blow and driving the valve surely from its seat. Before the pan 13 has carried the frame 10 to the limit of its tilting movement a trip linger 51 on lifting and tripping member 48 comes into contact with the stop lug 7 as indicated in Fig. 6. Continued movement of the frame 10 causes the release of hook '57 from shoulder 46, throws the hook end 41-? clear of lever 4.3, and presses the trip finger down against the stop surface 20, before mentioned, on frame 10. Contact of trip linger 51 with stop lug 7 also limits the descent of that end of the frame which supports the pan 13. In this position the pan is gradually emptied through the spout 1.3 after which, as before stated, the weight 1-lvibrates said frame in the opposite direction to the normal starting position.

The mechanism thu far described would continue intermittingly to operate, in the manner set rth in conjunction with the description of the mechanism, whether the supply of water flowing in the drive pipe were meager or abundant. In order to prevent the continued oscillation of the said gravity actuating mechanism when the water supply is abundant and the ram therefore. operating normally, a device which I here designate an autonurtic motor switch is applied. This switch causes cessation of the oscillation of the motor mechanism when. the supply is so abundant that the ram operates normally. and permits the oscillation to start again should. the normal operation of the ram cease, by reason of insuflicient water, sticking of the impetus valve, or failure of the valve to operate nor mally for other causes.

The said switch is in the nature of an auxiliary oscillatory weight motor carrying a spout adapted to be oscillated to and from a position beneath the shunt pipe nozzle and which, when in position beneath said inane-4.1a

nozzle, directs the water therefrom into the pan 13, thus keeping frame 1 tne position illustrated in .i'ii 2 Wlilll t). 1 above the valve clear 01:"; rang;- 01 movement.

Projecting "rein the base of housine; l

at the lower end of frame are: 8 a knite bearing 52. Above said knife bearine' and projecting from said frame arm 8 is a stop lug notched on opposite sides, and guides 5 Saddlcd on the kriii'o bearin is an. oscillatory weight motor l ra-me, consisting of a three armed lever, one arm ca 7- ing a permanent weight 56, another arm 5"? having a hooked end 58 adapted to suspend a leak bucket 55) having a hole 6G in its bot tom, which may be ope? ed more or less or closed by a gate 61. Arms 55 and e1:- tcnd downward at an angle to each col r forming a saddle bearing: at their junction which rests upon the knife edge bearing 52. The third arm 62 of said three armed lever projects upward and formed downward projecting line; (33 spaced roni t .e body of the arm 62. Said stop lug 53 projects into the space between lugs G3 and arm 62, thus serving lintit the arc of os cillation oi? the motor switch. The guide surfaces 54, and lateral notches in opposite faces oi lug 58 serve to steady the lever arm 62, to which is secured the long continuation (it carrying on its upper extremity the spent before referred to,

The movements of this witch motor controlled by water escaping; past the i1npetus valve. in order to utilize this flow a trough is placed so as to catch escape water and direct it into he bucket hung; therein in an inclined posiuon .1 y hooked straps 69 and ?O, so that portion out the water escapingpast the etus valve will be directed into bucket its long as the valve is openino' l closing nor- .ially by reason of ample rlow i the drive pipe, the bucket 59 will overbalance weight 56, thus holding the switch trough 65 be neath the shunt pipe nozzle in position to direct the flow into pan 13, thus keeping said pan d wn. Should the impetus valve close and remain closed, bucket 59 would soon be emptied through the opening (30. whereupon the permanent weight would swing the switch spout 65 from beneath the shunt pipe nozzle The low troni shunt pipe then descends between said switch spout 65 and the pan 13. the pan 13 empties, starting the ram controlling weight motor again into operation.

In order to cause an even flow through the shunt pipe g, whatever nzay be the level of water in the spring or drive tank Z), l afli a siphon 5/ to the inlet end of said shunt pipe. The connection between the times of or siphon and the shunt pipe is made by a pipe section 9 of a diameter less than that of the pipe 9 or the rest of the siphon and said reduced section is preferably of brass, bronze, or other non-corrosive material which will not rust and clog, but remains constantly of the same capacity. l y this in ans the siphon starts easily and a constant even delivery of water to the control motor may be had as long as there is sutli cient head in the spring or drive tank to operate the rain. Should the water fall so low as to stop the operations of the rain entirely, as when it falls so as to admit air to the siphon, the operation of the rain will ease until the water accumulates in the spring; or drive tank. over the bend of the siphon, whereupon the motor will resume operations, start the rain and keep it going until the head is again depleted as described.

By means of the descril'zed controlling mechanism a rain may be kept in operation without attention as lone; as there is any water flowing, although the delivery oi the rain may, course, be at a. lower rate in right.

@winp; to the fact that the lever frame 10. is saddled upon the rod 9 and the switch frame rests upon knife bearing 52, both may be lifted bodily from their bearings and taken off. These bearings cannot clog; the operation of the mechanism. All stud bearings for moving parts are of brass, bronze, or other non-corrosive metal, are also, preferably, the various movable latches, stops and stop lift devices, substan tially unaffected in their operation by exposnre to moisture.

ll hile l have illustrated and described my invention in the best embodiment now known to me, it is to be understood that changes in form and details 01 structure without substantial changes in principle or mode oi operation may made hout departing; from the spirit of my invention.

lVlltd) I claim and desire to secure by Let cent is:

V. mechanism of the class described, combination of an impetus valve, with a latch adapted to engage said. valve and d it closed, and automatically controlled means operating periodically to release said latch.

E3. in mechanism of the class described, ie conilgiiuation oi an iinpct .1 valve. with latch adapted to engage said valve and hold it closed, and water motor o erating to release said latch periodically.

ln mechanism of the class (lea-scribed. the combination of an impetus valve, with latch adapted to engage said valve and hold. it closed, an oscillatory motor operated to release said latch periodically, said motor comprising a lever frame haying a counter weight one side of its bearing and an actuator pan at the other side thereof. said actuator pan being constructed to discharge its contents when depressed.

4. In mechanism of the class described. the combination of an impetus valve, with a latch adapted to engage said valve and hold it closed, an oscillatory motor comprising a lever frame having a counter weight at one side of its bearing and an actuator pan at the other constructed to discharge its contents when depressed and an arm de pending from said lever frame adapted to release the valve when the lever frame moves in response to the weight of water in the pan.

5. In mechanism of the class described, the combination of an impetus valve, with a latch adapted to engage said valve and hold it closed, an oscillatory motor comprising a lever frame having a counter weight at one side of its bearing and an actuator pan at the other side thereof, sa'd actuator pan being constructed to discharge its contents only when depressed, a pair of spaced arms depending from the lever frame, a projection on said latch adapted to be engaged by one of said ar is when the lever frame tilts in one direction and by the other of said arms when the lever fram tilts in the opposite direction.

6. In mechanism of the class described, the combination of an impetus valve having a collar, with a latch adapted to engage un der said collar and hold said valve closed, said latch having an inclined face adapted to be engaged by the collar in the upward movement of said valve toward its seat, means adapted and arranged to urge said latch yieldingly toward locking position, a movable stop for limiting the extent of movement of said latch to engaging position beneath said collar, said step having a part adapted to be engaged by the upper side of said collar and released from engagement with the latch by the upward closing movement of the valve.

7. In mechanism of the class described, the combination of an impetus valve having acollar, a latch adapted to engage said collar and hold the valve closed, means for yieldingly urging said latch toward locking position, a movable stop adapted to engage said latch. and limit its movement toward locking. position, a motor and connections adapted to periodically release said latch and simultaneously elevate said stop out of the path of the valve stem in its closing): movements.

8. In mechanism of the class described, the combination of an impetus valve having? a collar, a latch having a tendency and adapted to engage said collar and hold the valve closed, an oscillatory gravity water motor operating periodically to release said latch, a movable stop adapted to limit the 1 ,a rzge ie extent of movement of said latch toward its locking position and means actuated by a movement of the motor caused by a charge of water for liftingsaid stop when the valve is retracted.

9.111 mechanism of the class described, the combination of an impetus valve having a collar, a latch having a tendency and adapted to engage under said collar and temporarily hold said valve to its seat, an oscillatory gravity water inotor comprisng a lever frame having a counter weight at one side of its bearing and an actuator pan at the other, a movable stop adapted to limit the movement of the latch toward locking position, said stop having a part projecting above said collar, a lost motion connection between said stop and said lever frame, whereby said stop will be lifted by the lever frame near the end of the movement thereof caused by the descent of the pan.

10. In mechanism of the class described, the combination of an impetus valve having a collar, with a latch adapted to engage be-- neath said collar and hold the valve closed, pivoted stop for limiting the movement of the valve toward locking position, said stop having a portion projecting over the collar, an oscillatory gravity water motor comprising a lever frame having a weight at one side of its bearing and an actuator pan at the other, a link pivoted at one end to said step and having a hook at its other end, and means on the counter weighted end of the lever frame for engaging said hook near the end of the movement of the frame caused by the descent of the pan.

11. In mechanism of the class described, the combination of an impetus valve, a pivoted lever having one end adjacent but spaced from said valve when the latter is closed, and a motor adapted perodically to move said lever so as to effect a camming blow on said valve to force it from its seat.

12. In mechanism of the class described, an impetus valve, a housing, a motor comprising an oscillatory frame, a lever for un.

seating said valve, and a lost motion COI1I16C tion between said frame and said lever for operating the lever by impact due to movement of the frame.

13. In mechanism of the class described, the combination of an impetus valve, a pi.v oted lever having its end normally spaced. above the end of the stem of said valve. a motor comprising an oscillatory frai'ne. a movable device on said frame adapted to engage and operate said lever and means to trip said d vice and release the lever after the latter has unseated the valve.

let. In mechanism of the class described, the combination of animpetus valve, a housing, a counter vweighted lever pivoted on the housing and normally resting with one end above the end of the valve stem, a motor m i auprisi: sold hon,

'zscillzitory {rouse mounted on '2 lever operator;- device pivoled on sa frame in position to engage l'ii'llui lever and operete during; the movement of in one direction, and means for tripping said device and releasn he lever it has: unseated the valve. nisni cit the class described, the coinbinzitic i oi an impetus valve, hous counter weighted lever pivoted on said housing, having one normally spaced above the end of t lt, valve stem, an oscillatory motor coinprising; lever frame mounted on said housing, a lever operating member pivoted to id home and adapted to engage said counter weighted lever, said lever operating member com rising a bell cranl: having on. one orm a hooked depending end sdap 763 the valve operated to cu mg; lever durn the latter portion of a tilting movement or said frame, and s stop on the housin r, erwnged to c othci. arm of son hell crank for role: line, said valve actuating lever after the olve has been nnseeted.

1,6. in mechanism 0' the combination of an i adopted to hold the valve lever having; one end 21g normally adjoccnt the valve, and means controlled by the motor for releasing the lat-ch end operating the lever to Tins-eat the valve.

described, l

c. a closed, a motor 'i 17. In mechanism of the class described, on oetus valve having latch engaging '1 NJ. i I ,L sciiace, a, lwtcn llllvlllg head adapted to said surr ce with a camnnng effect 1 -V i controlling Sftlh latch.

motor 1.8. in m chanism o: the class descr' under arranged to said latch to force it loci-ring; position.

52,0, ln mechanism oi? the class described, an impetus valve, opivoted latch. ac llpififl to engage said valve and hold it rented, it spring; bearing against said hitch, said spine being so disposed es to exert its 1T6SS1UC lightly to hold said latch retracted, but to force said latch powerfully toward lochino position after i111 movement oi the later: from retracted position, and e motor mechangg; a body and a nism for retracting the latch and initiating its locking movement.

21. In mechanism of the class described, the combination of an impetus valve having; it collar on its stem, a latch adopted to enunder said cells-r when the valve is seated, said latch comprising; a head, an elongated body having bearing lugs extending at right angles from its lower end, notched bearings for said bearing lugs, the axis whereof intersect the axis of said valve, a coil spring bearing against said latch on the side opposite said lug and or ranged to exert its pressure along a line passing slightly below said hearing when the latch is retracted and along a line well above said hearing when the latch is in loclo ing position.

22. In mechanism of the class described, the combination of an impetus valve, with a latch adapted to engage said valve and hold it in closed position, sold latch. compris ing a body aving latch head and bearing lugs extending at right angles therefrom at the end opposite said head, bearing notches at opposite sides of the axis of said valve, lugs on the side oi? the latch body opposite and above said bearing lugs, s bearing plat-e engaging said lugs, a rod, a spring bearing head thereon, coiled spring between the said bearing head and said bearing plate, the arrangement being such that when the latch is fully retracted the line of force of the spring extends slightly below said hearing notches and when the latch is in looking position the line of force extends well above said bearing notches.

28. In mechanism of the class described, the combination of an impetus valve having a collar on stem, a latch comprising a body and a head adapted to engage under said collar when said valve is seated, sold latch body being pivoted on an axis substantially intersecting the axis of the valve, or spring arranged to hold said latch in retracted position and to force said latch into locking position when moved slightly from its retracted position, a motor comprising an oscillatory frame and means on the said frame for retracting the latch when the frame moves in one direction and for initiating the locking movement oi: the latch when it moves in the other direction.

l n mechanism of the class described, the combination of an impetus valve, a housing comprising spaced uprights, a transverse bearing member between said uprights, an oscillatory frame having a saddle bearing; resting on said bearing member, ineens on said oscillatory frame for controlling t ill, position of said impetus valve and stops on the housing for limiting the oscillation of said frame in both directions.

25. In mechanism of the class described,

the combination of an impetus valve, means for controlling the position of said valve comprising an oscillatory motor having a counter weight on one side of its bearing and an actuater pan on the other side, a conduit arranged to deliver a stream of water into said pan when said pan is elevatcd and to discharge at one side of said pan when it is depressed, a switch spout adapted to be moved from a position at one side of said delivery spout to a position beneath said delivery end so as to direct the flow into the pan when the latter is depressed, and a leak bucket adapted to receive waste water from said valve for controlling the position of said spout.

26. In mechanism of the class described, the combination of an impetus valve, a housing, an oscillatory motor for controlling said valve, said motor comprising alever frame having a counter weight on one side of its bearing and an actuator pan at the other side thereof, a conduit for delivering water into said pan when in its elevated position, a counter weighted auxiliary oscillatory motor pivoted on said frame, a switch spout operated thereby, a leak bucket adapted to operate said auxiliary motor, said bucket being disposed so as to receive waste water flowing from said impetus valve, and means for limiting the oscillations of said auxiliary motor so as to move the spout beneath the delivery end of the conduit when said bucket is filled with water and to remove the switch spout from beneath said delivery end when said bucket empties.

27. In machanism of the class described, the combination of an impetus valve, a housing, an oscillatory motor mounted on said housing, comprising an actuator pan, a conduit for delivering to said pan when in its elevated position, a knife bearing on said housing, a counter weighted oscillatory frame mounted on said knife bearing, a switch spout carried on said oscillatory frame, means for limiting the oscillations of said frame so that said spout may move from a position at one side of the delivery end of said conduit to a position beneath said delivery end, a leak bucket for controlling said oscillatory frame, and means for directing water flowing from the impetus valve into said bucket.

28. In mechanism of the class described, comprising an automatic switch controlled by water flowing through the impetus valve,

a spout, and means for detachably securing said spout in position to receive water from the impetus valve and direct it so as to operate the switch.

29. In mechanism of the class described, an impetus valve, a water motor, a conduit for delivering water from the reservoir to said motor and a siphon in said reservoir connected to said conduit.

30. in mechanism of the class described, an impetus valve, awater motor for controlling said valve, a conduit for delivering water to said motor, a siphon connected to the inflow end of said conduit in the reservoir, and a reduced section connecting one arm of said siphon to the conduit.

31. In mechanism of the class described, an oscillatory gravity motor comprising a counter weighted frame carrying actuator pan, means for limiting the amplitude of the oscillations of said frame, said pan having a spout at its discharge end the bottom of which extends at an oblique angle from the bottom of the pan, and is substantially horizontal when the frame is at the limit of the movement caused by the weighted pan, said spout communicating with the interior of the pan by a hole in the wall of the latter.

32. In mechanism of the class described, an oscillatory gra ity motor comprising a counter weighted frame carrying an actuator pan, means for limiting the amplitude of the oscillations of said frame, said pan having walls of greater depth the end nearest the bearing of said frame than at the outer end, a spout at the outer end of said pan the bottom of which inclines upward from the bottom of the pan at such an angle that it is substantially horizontal when the pan is at the limit of its discharg ing position, said spout communicating with said pan by a hole in the wall of the latter.

In mechanism of the class described, an oscillatory gravity motor comprising a counter weighted frame carrying an actu ator pan, means for limiting the amplitude of the oscillations of said frame, said pan having a discharge outlet in the end farthest from the frame, the frame being so disposed that substantially all water will be dis charged from the pan only when the pan is fully depressed.

In testimony whereof I afiix my signature.

DARIEN W. DODSON.

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