US2109084A - Dispensing apparatus - Google Patents

Description

Feb. 22, 1938.

w. M. CARROLL DISPENSING APPARATUS Filed Feb. 2, 1935 '7 Sheets-Sheet l Feb. 22, 1938. w. M. CARROLL DISPENSING APPARATUS 7 Sheets-Sheet 2 I'UUZTLtOI': bllwmwflfarrobb Filed Feb. 2, 1935 (o mm eggs.

File.

Feb.22, 1938. w, M, CARR LL 2,109,084

DISPENSINQ APPARATUS Filed Feb. 2, 1935 '7 Sheets-Sheet 3 Irjbenimrz Z1) LlLLamM. Carma Feb. 22, 1938. w, M, AR L 2,109,084

msimnsma APPARATUS Feb. 22, 1938. w. M. CARROLL 2,109,084 DISPENSINGYAPPARATUS I Filed'Feb. 2, 1935 7 Sheets-Sheet 5 aea IGZSQ J54 Fel 22, 1938. w. M. CARRGLL 2,109,034

DISPENS ING APPARATUS Filed Feb. 2, 1955 7 Sheets-Sheet 6.

Feb. 22, 1938. w. M. CARROLL 2,109,084

DISPENSING APPARATUS Filed Feb. 2, 1955 7 Sheds-Sheet 7 l G 0 H L Patented Feb. 22, 1938 PATENT OFFICE DISPENSING APPARATUS -William M. Carroll, Fort Wayne, 1nd., assignor to S. F. Bowser'.& Company, Inc., Fort Wayne,

Ind., a corporation of Indiana Application February 2, 1935, Serial No. 4,675

34 Claims.

My invention relates to liquid dispensing devices adapted to be used for the dispensing of gasoline andsimilar liquids.

In general, this invention is related to an ap- 5 plication heretofore filed by me Serial Number 4,674, filed February 2,1935 for a control mechanism for a liquid dispensing devices specifically a dispensing devicefor gasoline and other liquids. In my prior application I have disclosed l0 and claimed a construction wherein an exact and predetermined amount of liquid is adapted to be dispensed from a dispensing nozzle by an arrangement such that the dispensing operator may remove the nozzle from its support or other hook at the pumpstandard or housing, and walk over to the tankto be filled, generally disposed at a. distance'from the housing, such as an auto-.

mobiletank, and whereupon by a pull upon the hose at the nozzle end of the dispensing device,

start the dispensing pump and open a. control valve in the dispensing line in advance of the meter. Upon the opening of the nozzle valve,

the dispensing is continued by maintaining a tension upon the hose. The operator, merely by watching the, liquid level in the tank, is able to fill the tank and without regarding the meter clock, know that an exact, definite quantity of liq- 4 uid, such as exactly ten gallons, will be dispensed.

When-the level in the tank is just short of being full, sayshort'by approximately one quart of filling the tank, upon release of the tension on the hose, mechanism will be automatically set into operation for automatically stopping the dispensing action independent of the closure of the nozzle valve, so that an exact and predetermined amount of liquid is dispensed, generally an exact unit amount such, for instance, as ten gallons, no more or no less of liquid, or ten and one-half gallons, no more-or no less','of liquid. In my 40 prior invention, as heretofore disclosed and claimed, the control from the nozzle endof the.

dispensing device, of 'the automatic means for dispensing exact and predetermined volumes of liquid, no more or no less, when operated by remote control means, is carried out by a pull hose operation wherein the pulling and main! taining oi the tension on the .hosestarts and.

continues the dispensing operation, and wherein a release of the tension stops or initiatesthe automatic stoppage of the dispensing operationin every case the dispensing flow is stopped automatically at an exact and predetermined unit quantity of liquid, and the initiation of the stopping mechanism may be actuated at the will of the operator at any time just before and/or just rat the time the exact and predetermined amount has been delivered.

My present invention constitutes, in a specific sense as applied to the pull hose control or my prior application, an improvement on the pull 5 hose means vfor actuating the automatic means for dispensing a predetermined, exact and preferably unit amount of liquid; in a broad sense, my present invention includes a new type of control means for stopping the dispensing action, at 10 a remote control station, as from the nozzle end of the dispensing conduit, and particularly does it provide a novel construction oi pressure-operated means actuated by a predetermined increase or by the creation of a predetermined sudden 15 surge in pressure in the dispensing line and wherein particularly and specifically, this creation of pressure is occasioned by a hammer action of the dispensing liquid occasioned by momentary closing of the nozzle valve and in such 20 a manner as not to substantially-interfere with continuous flow.

'Among the objects oi my invention are to provide a liquid dispensing device including a liquid dispensing line through which liquid is adapt- 25 ed to flow under pressure and wherein means is provided forcontrolling-the dispensing operation from the nozzle end of the line by'the creation of a suddenand relatively marked increase in pressure in the dispensing line for actuating the 30 liquid control means.

Another object of my invention is to provide a dispensing device wherein'means is provided in cooperation with a. liquid dispensing line so that operation of the manually operable control means 35 'for the nozzle valve serves to actuate the liquid control means by means oi. so-called hammer action set up in the liquid in the dispensing line."

Yet another -object of my invention resides in 40 providing a liquid dispensing device with means operably controlled .by the passage of fluid through the dispensing line for dispensing an exact and predetermined unit quantity or liquid, and pressure operated means is associated with 5 the dispensing line and adapted to be operated from the nozzle end thereof at the will of the operator for controlling the operation of the aforesaid dispensing means.

Another one of my objects is to provide a pull 5ooperator releases his tension upon the hose after the same has been pulled to startdispensing, the termination of the dispensing operation can be still accomplished from the dispensing or nozzle end of the hose.

Yet another object of my invention resides in providing a remote control-device for a liquid dispensing mechanism wherein a pressure operated device such as a collapsible bellows is associated with the dispensing line and actuated by a predetermined pressure therein created at the will of the operator for actuating the dispensing mechanism.

Yet another object of my invention resides in providing a control mechanism for a liquid dispensing device wherein a collapsible pressure operated device is utilized in cooperation with that portion of the liquid dispensing line disposed between the meter and the valve-controlled nozzle wherein after dispensing is started, when the valve of the nozzle is closed momentarily, a predetermined back pressure will be built up in said dispensing line to cause the operation of the collapsible pressure-operated device to actuate control mechanism for eflfecting the dispensing oper-v ation.

Yet another object of my invention resides in providing a control device for the dispensing operation, which device is operable due to the creation of a sudden, perceptible increase in pressure in the dispensing line. yet which device is not operated by a gradual increase in pressure in the dispensing line, such as occurs when the nozzle valve is gradually closed.

Yet another object of my invention resides in providing a pressure-operated control device for controlling and/or stopping the dispensing flow, and which is operable by closing the nozzle valve in a predetermined manner, but which is not operable when the nozzle valve is actuated in the normal manner.

Yet another object of my invention resides in providing a control valve for a liquid dispensing device which is adapted to be closed by a momentary and sudden closure of the nozzle valve, but which will not be affected by a gradual closure of the nozzle valve.

Yet another object of my invention resides in providing, in a liquid dispensing system, through which liquid is adapted to be forced by a pump, a control valve for stopping the liquid flow therein, and providing associated mechanism for operating the same, which control valve and associated mechanism is constructed and arranged to cause the valve to close by quickly snapping or momentarily closing the nozzle valve.,

Yet another object of my invention resides in providing a liquid dispensing system through which liquid is adapted to be forced by a pump or equivalent device, including gravity head, and wherein a control is provided for controlling liquid flow, and specifically for stopping liquid flow and wherein means is provided, operable from the nozzle end of the flexible hose, whereby the control means is adapted to be closed at a predetermined time without the intervention of any operating devices extending along or within the length of hose. In short, one of the objects of my invention is to provide a liquid control device operable from the nozzle valve without the use of the usual type of interconnecting Bowden wires, hydraulic tuba, electrical wires, or, pres-- sure tubes or other control devices extending along the hose, whereby to encumber or restrict the free movement of the hose.

Yet another object of my invention resides in transforming the kinetic energy of a body of liquid flowing through a dispensing line into pressure which is of substantially equal intensity throughout the line by manipulating a device connected to one end of the line to in turn operate a pressure responsive device located at a point in the dispensing line remote from the first mentioned device, preferably within the pump housing, to actuate means for controlling the dispensing operation, thus providing a remote control system for the control means without encumbering the dispensing line and particularly the flexible hose portion thereof, if such is provided, with control mechanisms.

Another object of my invention resides in providing a remote control device for a gas line dispensing mechanism which includes a collapsible device operated by a predetermined pressure created in the dispensing line and which pressure is higher than that normally created by the operation of the pump when in dispensing operation. It is also higher than the normal by-pass operating pressure of the pump when the pump is bypassing as when the nozzle valve is closed and preparatory to the usual dispensing operation.

Yet another object of my invention resides in providing a liquid dispensing device involving a dispensing line through which liquid is adapted to be forced under pressure by the desired type of pumping means having the usual by-pass and wherein a control valve is insertedin'said line and adapted to be closed to stop dispensing action and wherein means is associated for closing the valve at a predetermined and exact time for dispensing an exact unit quantity of liquid and wherein the closure of said control valve is operable from the nozzle end of the dispensing line by means of a pressure-actuated device associated with said line so that when a pressure is built up insaid line, due to the momentary closure of the nozzle valve, the dispensing mechanism will be controlled.

These and other objects of my invention will be apparent from a perusal of the following specification when taken in connection with the following drawings, wherein Fig. 1 is a front elevational view of one form of my dispensing mechanism;

Fig. 2 is a side elevational view;

Fig. 3 is a plansection on line 33 of Fig.

Fig. 4 is a changed position of the hose pull arm operating-means shown in Fig. 3;

Fig. 5 is a section on line 5-5 of Fig. 3;

Fig. 6 is a view of the positive stop mechanism for the set back arm, the same being taken on line 66 of Fig. 5;

Fig. ,7 is a perspective view of the hose pull arm and the collapsible pressure-operated means and associated parts;

Fig. 8 is a section on the line 8-8 of Fig. 3', showing the collapsible pressure-operated device with the control valve open and the pump in operation;

Fig. 9 is a changed position of the parts shown in Fig. 8 and illustrating the same after the pressure-operated device has operated;

Fig. 10 is a diagrammatic perspective view of the clock and reset mechanism therefor, and

Fig. 11 is a side view of a modified form'of the hose pull control mechanism;

Fig. 12 is a section on the-line [2-H of Fig. 11.

Referring now to the drawings in detail, in the embodiment which I have illustrated for disclosing a preferred form of my invention, I have provided the present standard type of pump housing 2 located on any desired base and adapted to house a portion of a dispensing line 4 disposed between the pump and reservoir to hold the prime for the pump. By the utilization of the control valve hereinafter disclosed, I am enabled to omit the pressure relief valve, which is customarily located in the air relief since the control valve serves the same function. The line 4 is connected to the inlet side of any type of means for causing a flow of fluid through the line under pressure, which'herein is illustrated as a pump 6, preferably of the rotary tim driven by a belt 8 from an electric motor I8 having a switch I2. The discharge side-of the pump is connected to a conduit I4 terminating in a coupling I6 forming a valve seat I8 in which is located a control valve 28 having a stem 22 passing through an opening in the side of the conduit 24 which connects with the inlet side of the meter.

The meter bowl is shown as at 26 in Fig. 1. This meter is preferably of any liquid displacement type such as any well known type, of Bowser meter now on the market, and in general, it comprises a plurality or series of cylinders in which pistons reciprocate. The pistons are interconnected with a suitable valve mechanism whereby the liquid under pressure forces the pistons back sequentially, the valve mechanism in turn serving to discharge the measured quantity of liquid through the discharge side of the meter. The movement of the piston, in turn, is, connected to a meter shaft adapted to operate suitable clock mechanism for indicating the amount of liquid dispensed at any particular instant.

The control valve 28 is adapted normally against its seat by the spring 26 and also by the pressure of the liquid. This valv as herebefore stated, has a stem 22 passing through suitable packing and projecting outwardly as at 28 for operation as hereinafter described.

The dispensing side of the meter is connected to a dispensing conduit 38 which connects with a sight-glass 32 which, in turn, discharges through a usual dispensing conduit 34v herein shown as a flexible hose terminating in a nozzle 86. In the present instance, this nozzle is provided with a spring-pressed nozzle valve 38 and with manually operated means48 for opening the same when desired. The spring of course, causes the instant closure of the valve when pressure is I released. In addition, the nozzle is provided with a usual nozzle guard 42 adapted to be supported on a support 44 provided with two outstanding cradle-shaped arms 46 and a locking mechanism 48 hereinafter set forth.

In certain details of construction, my presentinvention incorporates some of the features of my previously mentioned application, and as to these parts, per se, no claim is made herein, but

as to any claims in combination of this previously claimed construction with the pressure-operated means hereindisclosed for the first time, for controlling and/or' stopping the dispensing operation, claims are made herein.

As before stated, means is provided for dispensing, under the control of the operator, predetermined and exact quantities of liquid. To this end I have provided devices controlled by the flow -is provided with a slow hand 88.

to be closed carries a friction disc I2. A gear 14 is loose on the collar 18 and is interposed between the disc 12 and a spring 16 which is driven by disc 18, which is fast to the collar 88 which, in turn, is fast to shaft 88. Two pegs 82 and 84 are disposed in the slots in the disc I8 and are driven thereby. The bottom of these pegs 82, 84 are connected to a disc 86 which, in turn, carries a pin 88 which drives this spring disc 16, whereby when shaft 68 is driven it will drive collar 88, and hence shaft 98 connected thereby, but when it is desired to reset the clock mechanism, as hereinafter described, the gear I4 will turn preliminarily for resetting the hands to zero and then, when the hands are back to zero against the usual stop, the gear 14 will continue to turn without putting any further turning moment upon the shaft for turning the hands. The collar 88 is provided with an elongated bearing 88' into which extend both shafts 68 and 98. The former turns freely in the bearing while the latter is pinned to rotate with the collar 88 by a pin 88'. A pin 68' is inserted in a hole drilled through shaft 68 just above disc 86 and serves to hold the spring I6 under committing free rotation of the disc and the remainder of the clutch assembly as described above. The shaft 881s provided at its top end with the gear 92 meshing with the worm spiral gear 94 on one of the indicator shafts 96, which The other shaft I88, for driving the fast han'd I82, as is disclosed in my prior application, is driven by means of a gear I84from a spiral gear I86 on the collar I88, and, in turn, is driven through similar mechanism including gear II8, which is driven by means of a gear II2, which is in turn adapted to be driven by certain reset mechanism hereinafter described. 4 The reset mechanism comprises a reset actuator. I I6 carrying thereon a bevel gear II8 driving another bevel gear I28 on a shaft I22. Shaft I22 drives an arm I24 which carries a pawl !26 adapted to engage a ratchet I28, which is integral formed on the underside of the gear H2. The teeth of this ratchet engage a pawl I32 pivoted as at I34 to a. disc gear I36 which is adapted to mesh with the disc gear 14. The disc gear 2' disc I36 clockwise, whereby to'revolve the disc gear 14 in a counterclockwise direction. Gear II2, being rotated in a clockwise direction, will revolve disc gear H8 in a counterclockwise direc-- tion. A pin I38 on the arm I2,4 is connected to a spring I48, the other end of which is connected to a pin I42 on the pawl I26, the center portion of which is pivoted as at I42 to the arm I24. When the indicators are reset to zero, as herenbefore described, through the action of pawl I26, the pawl I26 is cammed out of engagement with the teeth of the ratchet wheel I 28 by reason of with gear H2 and integral with ratchet I88 the engagement of the pawl I 28 with stop I44. After resetting this pawl remains out of engagement with the gear I26 so that there is no interference between this pawl and the teeth of this ratchet wheel when the ratchet wheel is sub sequently rotated in a counterclockwise direction during dispensing. The complete details of construction of this resetting mechanism are fully disclosed and claimed in my prior-mentioned application.

The shaft I22 carries a collar I48 having an arm I48 adapted to operate in a cut-out portion of a segment I58 which is provided with teeth meshing with teeth I54 on a sector I58 loosely mounted on shaft 52 (see Figs. 5 and 10). This sector, in turn, overlies a roller clutch arranged in a cup-shaped disc I58 (see Fig. 3). This cupshaped disc I58 is provided with peripheral notches disposed in predetermined spaced relation to correspond with certain angular turning movements of the meter shaft 58. For instance, if the meter shaft 58 is mounted to turn once for every gallon of liquid dispensed, there will be provided four notches I88 on the disc I58, whichnotches will be arranged to correspond with quart volumes of liquid dispensed by the meter. Any suitable arrangement of notches and any variation may be selected, either in accordance-with volume, or price, as may be desired.

Meter shaft 52 has keyed thereto a clutch member I82 provided with three peripherally disposed ports in which are located the pawls or rollers I64 urged by meansof springs I88; as shown particularly in Fig. 3. These pawls cooperate in conjunction with the inner wall of the surrounding and enclosing housing I88 of the cup-shaped disc I58 whereby when the meter shaft 52 is driven in a clockwise direction, the rollers 54 will form the clutch traction for driving the cup-shaped disc I58.

Liquid control means is associated with the notched disc I58 comprising an arm I18, Figs. 3 and 7, pivoted as at I12 to a stationary part I14 of the device. This control mechanism has pivoted thereto, as at I16, a link I18 in turn pivoted to an arm I88 on a collar I82 fixed to shaft I84. This shaft is provided on its end with an additional collar I86 carrying an arm I88 adapted to operate the valve stem 28 of the control valve by means of a yoke 312 which is provided with pins 318 which ride in a groove 388 of a collar 366. The collar is slidably mounted on the valve stem and held against a set of jam nuts 314 by a relief spring 888 which is confined on the valve stem by means of a washer 382 and a second set of jam nuts 384. On a clockwise rotation of shaft I84, Fig. 7, the arm I88 will push the operating stem downwardly against the tension of its spring 28. Means is provided for operating the shaft remotely and preferably from the nozzle or dispensing end of the dispensing line. As disclosed in my prior application, the shaft I84 is provided with an arm I82 having a substantially roller-shaped head I84 thereon adapted to cooperate with a substantially Y-shaped cam surface I88 on a lever I88 pivoted as at'288 in a stationary part of the dispensing device. This arm I88 passes through a slot 282 in the housing 2 and terminates in a yoke 284 adapted to embrace the dispensing line, i. e., the hose portion 84 thereof.

As described in my previously mentioned application, the inner end of the leverI88 beyond the pivotal point 288 thereof, has means thereon to bring the lever to a constantly centralized position. This means comprises two superimposed levers, Figs. 3 and 4, which are plvotally mounted on the common pivotal pin 288 and superimposed upon a stationary bracket 282', which bracket is provided with oppositely disposed upstanding pins 284 and 285 on opposite sides of the pivotal pin 288. These levers are identical in construction, but have their parts oppositely or reversely arranged. The lowermost lever is provided with a rearwardly extending stop 2I8 (see Figs. 3 and 4) on its upper side, adapted to engage the uppermost pin 288. From this stop 2I8 the lever projects forwardly in a downward curve, as shown at 2| 2, and then flares outwardly and somewhat upwardly as at 2, where it is provided with an upstanding ear 2I6, perforated to receive therethrough one end of a tension spring 2I8, the inside end of which is fixed to an upstanding base 228. From the vertical ear 8 I8, the arm 2" curves diagonally downwardly as at M8 to the point 228 where it projects forwardly again as at 222, and at which point it is provided with an ear extending downwardly in a substantially vertical plane as at 224 to engage the outer edge of the Y-shaped cam portion of the lever I88. From the ear 224 the lever extends directly rearwardly as at 226 where it curves concentrically about the pivotal pin 288. Immediately above this arm lies the lever 288 which has a stop 228 to cooperate with the lowermost vertical pin 284, and is provided with a forwardly projecting arm 238 connectingwith a spring 282 fixed to'a stationary pin 234 at its opposite end. In addition, the upper am 288' is provided with an am 288 adapted to engage the opposite side of the Y-shaped cam of the lever I88 in exactlya similar manner as the lowermost lever does. By referring to Fig. 4, it will be seen that when the lever I88 is pivoted about its point 288, resiliently held arms will be put under tension and will tend to move the Y- shaped cam portion of the lever i88 back to central position so that the Y-shaped cam thereof will be centralized with respect to the roller I 84. It is to be observed that spring 28 on the valve stem control valve will tend to push the arm 188 upwardly to rotate shaft i84 counterclockwise to hold the am 582 against the Y- shaped cam.

The outer end of the lever I88, because of its connection to the hose, is so operated that a pull in any direction on the hose will tend to move the arm on its pivot and hence, through the Y-shaped cam, willactuate the control arm I82 to turn shaft I84 and hence to pull the arm I 88 downwardly to open the valve against the tension of its spring. when this happens, the

a rod 248 to the pump switch 12, and if the a nozzle valve is then opened, liquid will'be forced by the pump through the dispensing line to cause actuation of the meter, which, in turn, will operate the meter shaft and through the operation of the hereinbefore describedmechanism (see Fig. 10) the notched disc shaft I58 will be rotated and will continue to rotate as the dispensing continues, thereby accumulating on the clock mechanism units of volume dis- 'pensed.

In my present invention I have provided a pressure-operated control device for controlling provided means in the form of a control valve,'

which is adapted to close when actuated by this sudden rise in pressure to stop the liquid flow independent of the nozzle valve control. In the specific adaptation of my control means to the present invention, I have utilized the same preferably in the form of a remote control, particularly operative from the dispensing end of the unit, and specifically from the nozzle valve. In the preferred form, I have utilized the manually operable member which actuates the nozzle valve,

as a means for causing the sudden rise. In short, by creating a hammer action of the liquid in the dispensing line, and particularly the flexible hose, whereby this rapid rise in pressure upon the momentary closing of the nozzlevalve and re-opening thereof will cause a rise in pressure to approximately 25 pounds, which will immediately actuate a pressure-operated device such as a collapsible or expansible bellows in the flow line, which, in turn, will actuate certain control devices. By this-arrangement I have found that when the nozzle valve is gradually closed, the

gradual build up in pressure in the flow line does not operate the pressure device, however, when the so-called hammer action is created, the sudden rise in pressure will accomplish the operation of the control device, therefore I am able to provide a remote control device for controlling the dispensing action from the nozzle end of my dispenser and particularly by the manually operable member for the nozzle valve, whereby a momentary closure of the same will actuate the control, but whereby the customary gradual closing of the nozzle valve as in reducing to a finely metered flow, or lessened flow, will not operate the control device. Furthermore, by the provision of such-a type of device, I am enabled to utilize a remote control which is exact in operation, but wherein I am enabled to eliminate the utilization of objectionable Bowden wire controls, air-pressure controls, hydraulic tube controls, electrical controls, heretofore suggested,

and which have been placed along the flexible hose of the dispenser, either on the outside thereof, or within the same, and whereby irrespective of any increase in length of the hose due to well-known stretching action after some use, my device will actually-and instantly, when desired, control the dispensing action. Furthermore, by the use of my device, I am enabled to accomplish a remote control initiation of a dispensing operation which will then set in motion a mechanism which may subsequently be conditioned for automatically stopping the dispensing action at a predetermined time, and/or to dispense a predetermined exact unit quantity, volume or amount of liquid.

In my present invention, and as distinguished from the disclosure of my previous application,

the dispensation at the will of the operator, herein shown as means to initiate automatic stopping at the will of-the operator and at any time to produce automatically the dispensation of an exact and predetermined quantity of liquid. In

other words, I have provided means preferably, but not necessarily at the nozzle end of the device and operable by the dispenser .for actuating the control finger-I18, and irrespective of any tension or pull on the hose, whereby the stop will be moved into contact-with the periphery of the control device I58 so that when one of the control notches moves into registration with the. control "8, the latter will move thereinto and will immediately cause further movement of the shaft I84 as to permit the control valve 28 under the tension of its spring 26 to close, and if desired, to permit the pump actuating link 248 to stopthe pump. This mechanism also includes means for preliminarily causing a slight closing of the valve for slow dispensing and this is accomplished due to the fact that the control "8, upon preliminary actuation, will move up into contact, with the peripheral edge of they disc I58 without entering the slot, concurrently the shaft I84 will turn slightly, which will permit the valve stem 28 to rise slightly, which will permit a limited closure of the valve, but nota complete closing thereof. Ultimately, when a notch registers with the control I18, a complete closing of the valve will be effected;

In the invention herein described, and in contradistinction to my aforementioned application, the means for accomplishing the foregoing comprises an arm 242 rigidly mounted on the shaft I84 near the end thereof, adapted to rotate with the shaft.. Cooperating with this arm 242 is a trigger or latch 244 pivotally mounted as at 248 to a stationary bracket on the meter housing.

This latch 244 has an arm 248 and anptherarm 258, the latter constituting a limiting stop. The upper portion of the latch 244 is provided with a shoulder seat 252 upon which is adapted to rest,

the end 254 of the arm 242. A spring 256- connected as at 258 to arm 242* and as at 268 to latch whichmeans that thearm I88, which is depressing the grooved collar 366 and valve stem 28, will be held in such position to hold the control valve 28 in open position against the tension of its spring 28. This will mean that dispensing will continue with the parts in this position.

In conjunction with this mechanism, means is provided for releasing the latch at will and to bring about the automatic closure of the valve 28 at a desired time so that the control device I18 will engage a slot to stop the dispensing at an exact time and when and so that an exact volume of liquid will be dispensed-no more and no less. The means I have provided for this is operable preferably from the nozzle end of the device so that it will not be necessary for the operator to approachthe housing standard 2 to accomplish this, and particularly in conjunction with my pull hose means for starting, so that should the person purchasing the liquid desire an additional quantity, the device may again be re-started by pulling upon the hose and releasing the same. In the present instance I accomplish this remote control of the dispensing by means of a pressure-actuated device operating in conjunction with the dispensing line so that upon the creation of a predetermined pressure in the dispensing line, and particularly at the nozzle end of the dispensing line, the stop mechanism will be operated; In my present invention I prefer to have this pressure-operated device operable by means of the manual actuator for controlling the nozzle valve, in short, the lever 40. By reference to Figs. 7, 8 and 9, it will be seen that Ihave provided that part of the conduit which leads into the meter and in which conduit the. control valve 20 is located, with a passage 24 of suflicient capacity to house a pressure-operated device in the form of a bellows of any desired material, 262, preferably comprising a flatdisc-like head 264 and an expansible body sealinglyv connected by means of a disc 256 with the underside of 'a cover-plate 268 covering the upperwportion of the meter bowl housing. The disc 264 has riveted thereto a central operating pin 210, the outer end of which is threaded and provided with a head 212 adapted to underlie the latch arm 248. A spring 214 encircles the pin 210 within the bellows 262 for normally maintaining the bellows and disc 284 in expanded position.

Spring 214 may be adjusted by means of a threaded bushing 215 normally held in adjusted position by means of a spring stop 280. A suit-. able stop 215 is formed, preferably on the inner wall of the meter housing, forming the passage 24, which acts as an outward stop for the bellows disc 264 and its pin 210. The action of this device is such that when the nozzle valve is open. and the pump is operating, the working pressure will beapproximately thirteen (13) pounds. If the nozzle valve has remained closed, it is well known that in pumps of this type, the by-pass around the pump will be in operation and this by-pass is regulated to operate at a higher pressure-say seventeen (17) pounds pressure, however, when the device is in operation and the nozzle valve open, if the nozzle valve is closed momentarily and immediately opened so as not to substantially interfere'with the dispensing operation, the pressure will quickly jump to sub-' stantially twenty-five (25) pounds. The screw bushing 215 provides an adjustment for spring 214 to suit various conditions of working by-pass pressure and since the adjustment of the collapsible bellows is arranged so that this sudden mcrme in'pressure will operate the bellows to push the pin 210 upwardly to push the latch 244 upwardly to release the latch so that pressure of the spring 20 of the valve will push the stem 20 upwardly sumciently to turn the shaft I04 suiliciently to permit arm 242 to drop out of its latched seat under the tension also of the spring "Land-simultaneously therewith the control I I willmove into contact with the peripheral edge of the slotted disc I50, which continues to rotate until the next slot therein registers with the stop, at which time stop I will drop therein and will by watching the dial, will always know just when to operate the nozzle valve to cause operation of the sylphon or bellows to cause the automatic release of the stop mechanism to initiate automatic stopping. It is obvious that other types of bellows may be used and also other locations of the bellows. Obviously,in lieu of the sylphon or bellows, an equivalent device such as a cylinder and piston could be used to react to the impact pressure in a manner that the bellows does.

In Figs. 3 and 7 I have illustrated the manner of providing an interlock between the resetting mechanism for returning the indicators such as the indicating hands I 02 to zero and the nozzle support'is the same as shown in my prior mentioned application, which shows the resetting arm H6 which carries the bevel gear 8 as shown in Fig. 10 as constructed and arranged so that the bent portion thereof will swing into a dotted line position as shown in Fig. 7, from a full line position likewise shown in Fig. 'I. In the dotted line position, the arm- IIB will block or prevent the nozzle being placed on its support, whereas when swung to a position free thereof, it would permit the nozzle being placed upon its support and locked therein by means of the locking device 48. The resetting shaft 6 is provided with a. collar carrying a locking groove having a sharp shoulder adapted to engage a stop onthe shaft I84 as described in my prior application. In addition, the reset shaft I I6 is provided with an arm which cooperates with one or the other of the two stops which are mounted on the clock frame as shown in Fig. 6, and a spring is provided for holding the reset arm in whichever position it has been shifted to, whereby it requires a manual shift to move it from the dotted line position to the full line position.

While in a general way, the slotted disc mechanism and associated mechanism and/or its equivalent for causing the closing of the dispensing line at an exact instant, calculated with reference to the displacement of the meter to dispense exact quantities of liquid and no more and no less, is used with any type of clock mechanism, it is especially adaptable for use with a clock mechanism in which the indicating means comprises mechanism for indicating only exact volumes of liquid dispensed corresponding with the quantum stop calibrations of the slotted disc I58, or its equivalent. In other words, since the slotted disc is adapted to operate the closing mechanism for the control valve at exactly complete quantums or units of liquid measme, such as pints, quarts. gallons or the like, or

' any quantums of price measure such as 25, 50,

$1.00 or $5.00, it is preferable to provide a clock mechanism that will correspondingly indicate only the exact quantum of units of volume and/or price, and which will not indicate any intermediate values. a I have illustrated in Fig. 1 the type of clock mechanism which is shown in detail and claimed in my prior mentioned application, reference being made to a full disclosure of said application thereto.

From a, perusal of the foregoing, it will be evident that I have provided a novel and useful type from its support, the attendant must first shift the resetting arm II8 from the full line position to the dotted line position as shown in Fig. 3, at which time resetting, as hereinbefore described in connection with the mechanism shown in Fig. 10, will take place. The attendant then will carry the nozzle over to the automobile tank, generally located at a distance from the pump pedestal 2. If the purchaser desires to have his tank filled, the attendant will pull upon the hose, thereby through the lever I98 operating the shaft I84 in a clockwise direction to remove the control I18 from its slot in the slotted disc I58 and which movement of the shaft I84 opens the control valve and thereafter starts the pump. Obviously any type of means may be used to provide a delayed action for opening the control valve before or after the starting of the pump, or simultaneously therewith, if desired, so as hereinbefore.

stated, the pump .may have an independent switch control operable from a manually actuated lever on the housing, but I prefer to interconnect the pump switch with the operation of the shaft I84 whereby the pump is in operation only during the actual dispensing period, thereby saving electrical energy as the pump will not need to be by-passing when the dispensing is not in operation. The control valve being open before the pump is operated, the pump will by-pass until the dispenser actually opens the nozzle valve. It will be understood that when the attendant then pulls upon the hose, the latch mechanism shown in Figs. 8. and 9 will operate to hold the trigger or latch 242 shown in Fig. 8

' in horizontal position, thereby locking the shaft I84 and holding the control valve open so that tension can be released on the hose and dispensing by the operator can take place in the normal way without the inconvenience of maintaining his pull upon the hose, which has always been one of the disadvantages of a hose pull type of device, whereby complete attention can be directed to filling the tank. Or, if it is not desirable to completely fill the tank, but instead a definite amount of gasoline as, for instance, five gallons is desired, when the indicator clock has moved around to a position wherein four and three quarters (4%) gallons have been indicated, the operator will then snap the nozzle valve shut, even momentarily, which will immediately build up the requisite pressure in the liquid dispensing passage 24 which will operate the sylphon bellows to release the latch mechanism whereby permitting the cooperative latch to drop slightly, whereby the spring 28 of the control .valve will move the nozzle valve slightly to a somewhat closed position and thereby metering down the discharge from a fulldischarge to a smaller discharge and whereby at the same time the control I18 will move into engagement with the imperforate periphery of the slotted disc I58 which is turning under the influence of the meter shaft as the liquid passes through the meter. Just as soon asone of the control notches in the slotted disc I58 registers with the control I18, the latter will drop into such registered notch, thereby permitting further movement of the control I18 which in turn will permit further movement of shaft I58 and the complete closing I of the valve 28 for stopping the fiow and consequently in the absence of fiow, holding the meter shaft from turning. This same movement of shaft, IN by reason of its connection with arm In the event that the purchaser should desire I Q another quartof liquid or another gallon of liquid, the operator will pull upon the hose from his remote position which will again start the pump, again open the control valve, again unlock the slotted disc by pulling away the control I18 and upon opening the nozzle valve, liquid will be dispensed until the indicator has approached the one-quart or one gallon indicated position, at which time the operator will repeat the process of snapping the nozzle valve to effect the closing operation as'hereinbefore described.

It is to be understood that the nozzle valve control lever can likewise be snapped in the event that a tank is overflowing, thereby immediately stopping the dispensing operation.

The control valve, it will .be noted, remains partly open because the pawl I18 is in. engagement with the periphery of the disc but is not seated in a notch; and the motor and pump are still in operation. When the operator proceeds to return the nozzle to the hook 48 he must first swing the lever I I8 from the dotted to the full line position in Figure 3 because the lever prevents return of the nozzle to the hook.

As the lever is swung, a counterclockwise rotation of shaft I22, Figure 18, ensues and the dog I48 engages the right hand shoulder of gear sector I58 to impart a counterclockwise rotation to it. Due to the meshing of gear sectors I58 and I54 the latter receives a clockwise rotation which is transmitted to the pawl to move it from its stop to permit it to engage the periphery of the disc.. Further rotation of lever II8 causes the pawl to pick up a notch in the disc, carry the disc to a position where the pawl I18 may engage another notch in the disc andwhen this occurs the shaft I84 rotates a sufficient distance to close the control valve and to open the motor switch to shut down the pump. The rotation of arm I I8 also cooks the reset pawl I28 for resetting the indicators when a subsequent dispensing operation is undertaken.

Referring now to the modified construction shown in Figs. 11 and 12, I have provided a modifled means for actuating the rock shaft I84, as shown in Fig. "7, which permits the elimination of the more or less unsightly lever I88, as shown in Fig. 1, and passing through a preferably round aperture in the housing. This shaft 282 is carof the clamp 284 carried by the bottom end of the sleeve 298. The hose 292 is shown as connected as usual by means of a coupling 288 to the bottom of the sight glass 298, which, as is well known, connects with the dispensing line 388.

Any movement of the flexible hose 292 will impart a definite rocking or turn to the shaft 282. At its inner end and within the housing 288, the shaft 282 is provided therein with a double link 382, which is rigidly mounted to rock with the shaft 282. This link, at its opposite outer ends, is perforated at. 384 and 388. Each perforation of the link receives the end of a control rod 388 and 3 I8 put thereinto as shown clearly in Fig. 11. The bottom end of each one of these rods is-provided with adjustable collars M2 and 3I4. Each one of the collars is provided with a spherically shaped shoulder 3I6 and 3I8, which spherical shoulder is adapted to seat or contact with the wallsof an opening 328-and 322 formed in the opposed ears 324 and 326 of a bracket 328 having a central arm 338 terminating in a collar 332 which is fixed, as at 334 to the rock shaft I84, which is the same rock shaft as is shown in Fig. 7 of the-drawings and hereinbefore described. This collar 332 is provided with another arm 336 corresponding to arm I88 as shown in Fig. '7, which arm is provided with a pivotally mounted link 338 which corresponds to link I18. This link I18 in turn actuates the control device I18, which is shown in Fig. '1 and which is adapted to cooperate with the tumable control device I58 on the extension metershaft '52 as hereinbefore described. v

Loosely mounted on the shaft 282 are two shaftcentralizing arms 348 and 342. Ann 348 is provided with an ear having a perforation through which passes one end of a coil spring 344, the opposite end of which is connected with anystationary part of the machine, as at 345. This arm 348 likewise is provided with a flattened surface 346 adapted to engage the uppermost end of rod 388. Arm 348 is loosely pivoted at 282 and has an extension 348 to engage a stop pin 358 mounted on the bracket 286. The other lever 342 is provided with aspring 352 fastened to the arm 342 at 358, and its opposite end is fastened to a stationary part of the machine at 358. Lever 342 has a flattened surface 358 adapted to engage the arm 3I8. This lever 342 is also pivoted on the same shaft as lever 348. Lever 342 has an extension 368 adapted to engage the stop pin 358.

These two levers 348 and 342 Ming under the.

tension of their respective springs 344 and 352, tend to keep the double link 382 in a centralized position.

When the hose 282 is pulled either to the right or left, it revolves a shaft 282, which has fastened to it the doublelink 382, which depresses either arm 388 or 3I8 which, in turn, rocks the shaft I84 by the engagement of the head 3| 2 or 3, against the surfaces 328 and 322 of the bracket 328.

I have provided resilient means associated with the control valve 28 for effecting the easy operation and particularly closure of this control valve, and particularly so that it may be quickly and easily closed or controlled from a remote point, and through the exertion of a minimum of energy from the remote point. At the same time I have also provided resilient means for maintaining this valve closed on its seat once it is closed. with a suflicient tension or force which is of suflieient degree to'maintain a considerable pressure in the dispensing line, particularly in the hose and sight glass whereby to prevent vaporization of the gasoline or other liquid therein, at relatively high temperatures, as for instance, during the summer time. So also this same means. particularly the spring mechanism, is constructed and arranged to permit the control valve to yield.

when inordinately high pressures are created in the dispensing line, particularly in the hose and in the sight glass whereby to relieve such pressures. In the present instance I have provided automatic means whereby a spring of greater tension is operatively brought into association with the control valve after the control valve has been closed, whereby to accomplish the foregoing, and I have preferably included mechanism for accomplishing this in connection with the reset mechanism of the pump and/or with the nozzle support and its accompanying shiftable device, which heretofore was utilized to insure the on or off position of the pump or liquid dispensing control in association with the placing or removal of the nozzle from its support on the housing. Inasmuch as the foregoing mechanism has been disclosed and claimed in my prior application, I shall make no claim broadly thereto, other than any possible new arrangement of elements thereof in association with the remote control device operated by the hammer action of. the liquid or the liquid column in the hose for closing the control valve. However, for purposes of exemplification, I desire to point out that in the preferred form illustrated in Figs. 7, 8 and 9, the spring 26 may be of suflicient tension to just overcome the friction of the stuiling box 358,

through which the stem is adapted to move, and

in addition the spring may have some slight further action in assisting the liquid column being forced through the meter by thepump, quickly to close control valve 28, whereby by providing a relatively weak spring such as 26, the same may he opened by remote control action, specifically by a relatively easy pull upon the hose. In association with this resilient means 26, I have provided additional springmeans 368 of relatively stronger tension adapted to have one end abut washer 362 adjusted in position on the stem 28 by means of the lock nuts 364. The opposite end of this spring 368 abuts against a collar or yoke 1366 having an annular opening 368 in which operate opposed pins 318 on a bifurcated arm 312 on the end of arm I86. The yoke.v or collar 366 is capable of sliding on the stem 28 but is opposed by means of the spring 368 against theadjustable lock nuts 318. By adjusting the locknuts 364 and 314, the tension of the spring 368-may be regulated. Cooperating with this mechanism,

and on the oppositeend of the shaft I84 is a collar 316 pinned thereto. This collar. is provided with an operating arm 318 adapted oper- 384 arranged so that when the delivery is completed and the operator desires to reset the clock mechanism, he must turn the reset control I I6 a distance of 188 degrees before hanging up the hose. In doing so, the cam surface 384 of the cam 388 contacts the finger 318 and imparts a slight counter clockwise rotation to the shaft I84 thereby bringing spring 368 into action to main-' tain the control valve 28 tightly against its seat, and with a greater force than could be exerted by the spring 26. This spring 368 is designed and adjusted to relieve pressure resulting from excessive summer temperatures at a desired pressure release.

In order to permit opening of the valve 28 to start the How, the cam 388 is provided with an opening therethrough, 386, which is adapted to register with the plane of movement of the finger 318 when the reset control I I6 is shifted to dotted line position as shown in Fig. 7. Manifestly, when shifted to full line position shown in Fig.

7, the slot 388 is out of registration with the control finger 318, whereby said finger is held from clockwise movement so that the valve 28 is prevented from being opened bythe remote con- I trol actuating mechanism.

1. A liquid dispensing apparatus comprising means forming a delivery conduit having a freely suspended portion, means for delivering liquid through said conduit, said means including an electric pump and a switch for starting and stopping the pump, a member secured to said conduit below its point of suspension, means operatively connecting said member with said switch so that by pulling said conduit the switch will be moved to starting position, means for maintaining the switch in such starting position on release of the pulling action on said conduit, and manually shiftable means actuatable from the delivery end of said conduit for restoring the switch to stopping position without pulling action on said conduit. 1

2. A liquid dispensing apparatus comprising means forming a delivery conduit having a freely suspended portion, means for delivering liquid through said conduit, saidmeans including a motor driven pump and switch mechanism for starting and stopping the motor thereof, means operatively connecting with said member and shiftable by pulling on said hose for operating said switch mechanism, means for retaining said switch mechanism in motor running position, means for releasing retaining members, and manually operable means disposed at each end of said conduit for actuating said releasing means.

3. A liquid dispensing apparatus comprising a pump stand, a delivery conduit freely suspended exteriorly to the stand, means within the stand for delivering liquid to said conduit, said means including an electric pump, and a switch for starting and stopping the pump, a member secured to said conduit below its point of suspension and extending into the stand, means operatively connecting the said member to said switch so that by pulling said conduit relative to said stand the switch will be moved to starting position, and a manually releasable means for maintaining the switch in starting position when the pull on the conduit is released.

4. A liquid dispensing apparatus comprising a delivery line having a fixed portion and a relatively movable portion, an electric pump for supplying liquid to the line, a controller for said pump, said relatively movable portion terminating in a dispensing nozzle, and connecting means from the controller to said relatively movable portion whereby the pump may be controlled by shifting said relatively movable portion away from a predetermined normal position, and means operative subsequently to the movement of said relatively movable portion back to its normal position forming a second control for said controller.

5. A liquid dispensing apparatus comprising a delivery line having a fixed portion and a dependent flexible portion suspended therefrom, an electric pump for supplying liquid to the line, a controller for said pump, connecting means from the controller to said dependent portion below its point of suspension whereby the pump may be started by swinging said flexible portion from its normal position, and means conditioned by movement 'of the flexible portion away from its pump starting position and manually actuated means for actuating said conditioned means for stopping said pump.

6. A liquid dispensing apparatus comprising a delivery line having a flxed portion and a depending flexible portion suspended therefrom, means connected to said depending portion below its point of suspension and actuated by swinging said flexible portion from its normal depending position for initiating the flow of liquid through said depending portion, and means conditioned by release of said flexible portion from its initiating position and thereafter manually operable without moving the depending portion of said flow line for stopping the flow of liquid through said depending portion.

7. In a dispensing system, a conduit for fluid,

' means for-controlling the flow of fluid through the conduit, a nozzle assembly for the conduit including a valve and mechanism for actuating the fluid controlling means by movement of the conduit and also by movement of the nozzle valve.

8. In a dispensing system, a conduit or fluid, means for controlling the flow of fluid through the conduit, a nozzle assembly for the conduit, and mechanism for actuating the fluid controlling means by movement of the conduit from the nozzle end thereof and means for actuating the fluid controlling means from the nozzle end of the conduit without moving the conduit.

9. In a dispensing system, a conduit for fluid, control means for starting the flow of fluid through the conduit, a nozzle assembly for the conduit including an actuatable member, means controlled by the movement of the conduit for actuating said control means to start the flow, and means preventing a subsequent actuation of said control means for starting the flow by movement of the conduit, without an intervening actuation of the actuatable member of the nozzle assembly. v

10. In a dispensing system, a conduit for fluid, means for controlling the flow of fluid through the conduit, a nozzle assembly for the conduit including an actuatable member, means adapted to be actuated by the movement of the conduit for controlling the fluid controlling means, and pressure-actuated means operated by movement of the actuatable member of the nozzle assembly for controlling the fluid controlling means.

11. In a dispensing system, a conduit for fluid, means for controlling the flow of fluid through the conduit, a nozzle assembly for theconduit including a valve, means adapted to be actuated by the movement of the conduit for controlling the fluid controlling means, and means adapted to be actuated by movement'of the nozzle valve for controlling the fluid controlling means.

12. In a dispensing system, means forming a dispensing conduit, a meter in said conduit, a control valve for said conduit, said conduit terminating in a nozzle assembly having a manually actuatable valve, and means automatically actuated by the operation of said nozzle valve for partially closing said control valve.

13. In a dispensing system, a conduit for fluid, means for controlling the flow of fluid through the conduit, a nozzle assembly for the conduit including an actuable member, means adapted to be actuated by movement of the actuatable member forvgradually decreasing the flow of fluid through the conduit.

14. In a dispensing system, a conduit for fluid, means for controlling the flow of fluid through the conduit, a nozzle assembly for the conduit, means adapted to be actuated by movement of the conduit for operating the fluid control means, and means for maintaining the condition of said first mentioned means when once operated by movement of the conduit.

5. In a dispensing system, a conduit for fluid,

' means for controlling the flow of fluid through the conduit, means operable upon movement of said conduit for starting the fluid flow, means for automatically latching the starting means in fluid flow position, and means for thereafter releasing said latching means to stop said fluid flow.

16. In a fluid dispensing system, means forming a dispensing conduit, a member for controlling the flow of fluid through the conduit, a pressure device connected to said conduit and adapted to be moved by a predetermined pressure of liquid in said conduit, mechanism actuated by movement of the conduit for actuating the flow control means to start the dispensing operation, means for automatically latching said mechanism in fluid flow position, and means actuated by movement of the pressure-operated means for releasing said latching mechanism for terminating the dispensing operation.

17. In a dispensing system, a conduit for fluid, a control valve in said conduit, a spring normally adapted to close said valve, said valve having an actuatable portion, a shiftable device in said conduit and adapted to be actuatedby a predetermined pressure of liquid in said conduit, a member adapted to open said valve, connections from said member to the conduit including means'operative by movement of said conduit for actuating said connections to open said valve, means for holding said connectionsin position for maintaining said valve open, connections between said device to said holding means, and means operated from the nozzle end of said conduit for actuating said device whereby to release said holding means to permit said valve to close.

18. In a dispensing system, a conduit for fluid, a pump for forcing liquid throughv the conduit, a nozzle assembly for the conduit including an actuatable member, means adapted to be actuated by the movement of the conduit for starting the pump, said means including devices for maintaining said pump in operation irrespective of further movement of said conduit, and actuatable from the dispensing end of said conduit for stopping said pump.

19. In a liquid dispensing device, the combination of means forming a liquid dispensing line, a meter in said line including a meter shaft, meter driven register, means adapted torotate in synchronism with the meter shaft including a plurality of operating devices, associated operating devices, means operative by movement of a portion of the dispensing line for moving the associated operating device out of contact with said first-mentioned operating devices to permit movement of the first-mentioned operating device by the meter during dispensing, means for maintaining said associated operating device in removed position while permitting free movement of said portion of the dispensing line, and means operable from the dispensing end of the conduit and operated by the pressure oi. liquid in said conduit for releasing said associated locking device for engagement with one of said operating devices whereby to cause termination of the dispensing operation when a predetermined and exact quantity of liquid has been dispensed.

20. In a liquid dispensing device, the combination with means forming a liquid dispensing line, a meter in said line including a meter shaft, meter indicating mechanism, means adapted to rotate in synchronism with the meter shaft, including a plurality of operating devices, an associated operating device, means operative by movement of the dispensing line for moving the associated operating device out of contact with said first-mentioned operating device to permit movement of the first-mentioned operating device by the meter during dispensing, means for maintaining said associated operating device in removed position irrespective of movement of the conduit, a pump for forcing fluid through said conduit, and means actuated with the movement of said associated operating device into operating position for stopping the operation of the pump.

21. In a dispensing system, a conduit for fluid, means for controlling the flcw of fluid through the conduit, a nozzle assembly for the conduit,- and manually operated means adapted to be actuated through the intermediary of the column of fluid in said conduit for progressively actuating said flow controlling means.

22. In a dispensing system, a conduit for fluid, means for controlling the flow of fluid through the conduit, a nozzle assembly for the conduit, and mechanism utilizing the column of liquid in said conduit for actuating the flow control means, said mechanism including means to cause the actuating of said flow control means in successive operations with a predetermined interval between each operation.

23. In a dispensing system, a conduit through which liquid to be dispensed is adapted to flow, means for stopping the flow of fluid through the conduit, a nozzle assembly for the conduit including an actuatable member, and pressureactuated means operable by movement of the actuatable member for stopping the liquid flow, said pressure operated means including mechanism for preliminary and partially stopping the flow and thereafter for completely stopping the flow.

24. In a liquid dispensing device the combination of a means forming a liquid dispensing line including a pump for forcing liquid through the line, a meter in the flow line, said flow line terminating in a flexible hose, a manually operable control valve for said hose, a second control valve in the flow line, a collapsible device in said flow line, hose pull mechanism connected to the hose for opening the control valve when the hose is put under tension, means formaintaining the valve in open position upon release of tension on the hose, said collapsible device including means for closing the control valve upon the creation of an abnormal pressure in the dispensing line occasioned by momentary closing of the nozzle valve.

25. In a liquid dispensing device a combination means including a flow line, including a meter therein, a pump for forcing liquid through the meter, said flow line terminating in a manually operable control valve, a second control valve in said flow line, a collapsible bellows operating at a pressure in excess of the normal dispensing pressure and disposed in said flow line, including a member extending outside of said flow line, means for adjusting said member to adjustably change the tension of said bellows, means rotatable upon operation of said meter, a shiftable member cooperating with said rotatable means, pull hose mechanism for operating said shiftable member for opening one of said control valves, latching mechanism shiftable to latch said shiftable member into the position shifted by said pull hose mechanism, and means operable by said bellows for actuating said latching mechanism to release the same to permit the closure of said opened control valve, said last named means being conditioned by cooperation of said shiftable member with said rotatable member.

26. In a liquid dispensing device a combination of means forming a liquid dispensing line including a pump, a motor operating said pump, a switch for the motor, a meter in the flow line, said flow line terminating in a manually operative control valve, a second control valve in the flow line, pull hose means for opening the control valve, means for latching the control valve in open position, means operable upon the actuation of the pull hose mechanism for actuating the pump switch, a pressure operating device in the dispensing line, an adjustment for said pressure operating device whereby said device is shiftable upon the creation of a pressure in the dispensing line caused by momentary closingof the manually operable terminal valve of said dispensing line which is in excess of the normal operation of the pump pressure or of the pressure of the bypass for the pump.

27. In a liquid dispensing system through which liquid is forced under pressure, a displacement meter in said system, said system terminating in a flexible hose provided with a valve control nozzle, a control valve in the flow line of said system for stopping, the flow therethrough, pull hose mechanism connected to the hose and connected to said control valve for opening the same, and a pressure operative device actuated by a pressure created in the flow line and connected to said control valve for causing the closure of said control valve.

28. In a liquid dispensing system a combination of means forming a flow line through which liquid is adapted to be forced under pressure, a displacement meter in said line, said line terminating in a flexible hose provided with a manually operable control valve, a second control valve in said line, a pressure operable device adapted to be actuated by the creation of a predetermined pressure in said line, pull hose mechanism and means connecting said pull hose mechanism withsaid second control valve for causing only the opening of said valve upon operation of said pull hose mechanism and means for causing solely the closing of said control valve upon the actuation of said pressure device.

29. In a liquid dispensing device of pull hose type a combination of an upstanding housing, a liquid flow line having a portion thereof passing through said housing and having a portion extending outside of said housing, means for causing the flow of liquids through said line, a control mechanism for controlling the flow of liquids through said line, a bracket extending outside of said housing including an elongated sleeve attachable to a portion of said flexible hose, a portion of said sleeve having an inwardly extending rigid member passing through the wall of said housing, mechanism on the inner portion of said member for actuating control mechanism, the lower portion of said sleeve having means for connecting with the hose.

30. A liquid dispensing apparatus comprising means forming a delivery line having a fixed portion and a depending flexible portion suspended therefrom and terminating in a dispensing nozzle, means for controlling the liquid flow through said line, controlling means for said liquid supply means, connecting means from the controlling means to said dependent portion whereby the flow may be started by swinging said flexible portion from its normal position, mechanism additional to said connecting means for stopping said liquid flow, and manually controllable means mounted on the dispensing end of said flow line for actuat-. ing said mechanism.

31. In a fluid dispensing apparatus, a conduit, a meter connected to said conduit, means for supplying a flow of fluid through said meter and said conduit, means for disabling the flow supplying means, means for preventing operation of said disabling means except when the meter indicates that an exact unit quantity of fluid has been dispensed, means forrmaintaining the disabling means and the preventing means inoperative, a pressure responsive device in said conduit, a closure in said conduit adapted, when operated, to prevent the flow of fluid therethrough, said pressure responsive device being operated only when the closure is suddenly operated, to render said maintaining means inoperative and to thus condition the disabling means for operation under control of the preventing means, additional means, operable to condition said preventing means to permit operation of the disabling means in case the closure is maintained in its operated condition with the meter indicating other than an exact unit quantity.

32. In a fluid dispensing apparatus, a conduit, a meter connected to said conduit, means for supplying a flow of fluid to said conduit and meter, a hose pull apparatus for initiating operation of the flow supplying means, means for disabling the flow supplying means, a device for closing and opening said conduit at will, an element driven under control of the meter, a pawl pivoted for cooperation with formations on said element which are so arranged with respect to the pawl that registration of the pawl and a formation is efiected each time a unit quantity of fluid has been dispensed through the meter, means for holding said pawl out of contact with said element, a pressure device connected to said conduit and responsive to sudden closure thereof for releasing said holding means whereby permitting cooperation of the pawl with said element, so that when the conduit is again opened, they will permit operation of the disabling mechanism when the dispensing of the then partially dispensed unit quantity of fluid is completed, and

means enabling rotation of said element and the pawl relative to each other to efiect registration of the pawl and a formation on said element in the'event that suchregistration is not efiected under control of the meter.

33. In a fluid dispensing apparatus, a conduit terminating in a dispensing hose, a meter connected with said conduit, means for supplying a flow of fluid through said meter, conduit and hose, a control valve in said conduit, means 'for opening said valve and initiating operation of the flow supplying means, means for maintaining said control valve open and said flow supplying means in operation, a disc driven by the meter and formed to cooperate with a pawl to permit clos ing of the control valve and stopping of the flow supplying means when any exact unit quantity of fluid has been dispensed, means to maintain the disc and paw] out of operative relation, means responsive to the creation of a predetermined pressure in the conduitfor rendering the latter maintaining means inoperative, and means enabling the setting of the disc, and pawl relative to each other to permit closing of the control valve and stopping of said flow supplying means when this is not accomplished under control of the meter.

34. In a liquid dispensing system, means forming a liquid flow line through which liquid is adapted to flow under pressure, means for controlling the flow of liquid through said line, and a plurality of means disposed in said line remotely one from the other, one of said means including devices for transforming'the kinetic energy of the liquid flowing through said line into pressure which is of substantially equal intensity throughout the portion of the line between said devices whereby to cause the operation of the other device, and means operated by the actuation of the other device for actuating the flow control means in the line.

' WILLIAM M. CARROLL.

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