US1985402A - Hose nozzle - Google Patents

Description

Dec. 25,4 1934. C, E, CARLSN 1,985,402

HOSE NOZ ZLE Dec. 25, 1934. c. E. cARLsoN 1,985,402 HOSE NOZZLIE I Filed Jan. 23, 1933 5 Sheets-Sheet 2 Dec. 25, 1934. c. E. cARLsN 1,985,402

HosE NozzLE 5 sheets-sheet 5 Filed Jan. 25, 1933 Dec. 25, 1934. c.. E. CARLSON HOSE NOZZLE Filed Jan. 2s, 19:55 5 sheets-sheet 4 @A @6X Y WW,

Dec. 25, 1934. Q E -CARLSON 1,985,402

HOSE NOZ ZLE Filed Jan. 25, 1933 5 sheets-sheet 5 Patented Dec. 25, 1934 UNITED .STATES Hosn NozzLE Carl E. Carlson, Fort Wayne, Ind., assignor to S. F. Bowser & Company, Inc., Fort Wayne. Ind., a corporation of Indiana Application January 2 3, 1933, Serial No. 653,016 1o claims. '(01. 221-95) the flow of liquid through the hose, or other conyduit, or is operable subsequently to the opening of such valve, and whereby the pump or other liquid forcing means is maintained in operation until after the closing of such valve, wher eby on the initiation of the dispensing operation, hammering action is avoided, and whereby at or toward the conclusion of the dispensing operation, the pressure on the liquid is maintained until small quantities of liquid may be dispensed under pressure as the end of the dispensing operation approaches; another object is to provide means of the foregoing character wherein the control of the pump-or other liquid forcing means is effected from and by the nozzle control valve at the end of the hose.

Another object is to provide mechanism for carrying out the foregoing sequence of operation of the pump and valve whereby said sequence may be carried out by any type of remote control mechanism either electrically, pneumatically, hydraulically or by mechanical means such as a Bowden wire, and the like; to provide a simple type of control means for providing the foregoing sequence, Awhich is mounted in the nozzle for operating the nozzle valve, and also the pump operating mechanism by a simple manual movement; to provide an adaptation of my invention whereby the control is effected from a manually operable member disposed at the side of the housing instead offrom the nozzle; to provide broadly. a locking arrangement between the pump operating member, the housing and the nozzle valve 4 whereby when the nozzle valveis supportedin stationary position on the housing, it will be impossible to operate the pump or the liquid forcing means, and it will be 'impossible to operate or open the nozzle valve, or more broadly speaking, it will be impossible to operate the dispensing apparatus. 1Stillother objects of my invention are to provide a novel type of stationary support for the nozzle 'when not in use, whereby the same may be locked imposition and whereby when so placed to be locked in position the pump control and liquid control are rendered automatically inopf erable; to providethese and other objects of my invention which will be apparentfrom-a perusal after the closure of the valve, whereby relativelyuids, wherein I desire to provide control mechaof the following specification when taken in connection with the following drawings, wherein Fig. 1 is a view partly in section of one form of my invention as applied to a remote control for a nozzle-operated mechanism for producing the 5 desired sequence hereinbefore mentioned from the nozzle valve itself;

Figs. 2, 3 and 4 are section views showing the manner in which the nozzle valve and pump mechanism are operable;

Figs. 5, 6, 7 and 8 are section views showing the manner in which the cam mechanism is operable for carrying out the functions of Figs. 2 to 4 inclusive;

Fig. 9 is a perspective view of the nozzle valve lever cam;

Fig. 10 is a perspective view of one form of my -invention as applied to a pneumatic remote control between the nozzle valve lever and the pump or other liquid forcing means; 20

Fig. 11 is a sectional view of one form of my air valve for association with the apparatus shown in Fig. 10;

Fig. 12 is a view showing an adaptation of my invention providing an interlock between the manually operable pump control member and a stationary support for the hose nozzle when notin use, and also a delivery valve if desired; l

Fig. 13 is a fragmentary section taken along the .line 13 13 of Fig. 12; 30

Fig. 14 is a partial sectional view of an adaptation' of my invention to a manual control on the side of the housing on the pump switch; and

Fig. 15 is a view of the air cylinder co-operating with the air valve of Fig. 11.

Referring now to my invention ingeneral, I have provided a liquid dispensing device of general application, but more particularly in mind for the dispensing of gasoline and other like liqnism between the pump or other liquid forcing means, which is adapted to draw the liquid from the usual storage tank and pass it through the dispensing hose under pressure and valve-controlled mechanism for controlling the ow of the fluid through the hose wherein a desired sequence of operation between the opening and closing of the valve and the liquid forcing means, such as the pump, is effected, so that at the initiation of .the dispensing operation the usual hammering action will be prevented by opening the liquid controllin" valve and operating the pump or other liquid forcing means either simultaneously or operating the liquid forcing means or pump Slightly Subsequently to the opening of the valve and on the approach or conclusion of the dispensing operation to secure a maintained control of pressure on the liquid passing through the nozzle valve by maintaining the pump or liquid forcing means in operation until after the closing of the valve. This sequence 'of operation, i. e., the control of the pump. may be carried out either as a remote control, i. e., by controlling the pump or other liquid forcing means automatically from the operation of the nozzle valve, or by instrumentalities located adjacent the nozzle valve and carried thereby, but not necessarily an automatic operation, or by instrumentalities disposed on the housing or remote from the nozzle valve. The control mechanism itself may be of any desired nature such, for instance, as an electrical control mechanism for automatically interconnecting the nozzle valve and the liquid forcing means such as the pump, or alternatively, a pneumatic arrangement, or hydraulic arrangement. or a mechanical arrangement such as a Bowden wire, or its equivalent. In the present instance I have illustrated one embodiment of my invention as a pneumatic arrangement purely forthe purpose of exemplilcation and not by way of limitation, and I have selected, for this purpose, the pneumatically controlled mechanism disclosed in the co-pending application of Clement P. Griilith, Serial No. 385,165, filed August 12, 1929, and in which present illustration I have modified certain features of the aforementioned Griffith application for the purpose of carrying out my desired sequence.

In my present invention I have also provided a new type of means providing a support for the hose when not in use, as for instance, when it is positioned on the housing after the dispensing operation, or when it is placed on the housing n and locked in position for the night, wherein there is provided an automatic interlock for the pump or liquid forcing means, and also wherein instrumentalities are provided so that when the nozzle is stationarily positioned, as aforesaid, the pump or liquid forcing means is automatically locked in inoperative position, and wherein these same instrumentalities will prevent the operation of the nozzle valve lever and/or alternatively, if desired, the operation of the delivery valve, and also wherein these same instrumentalities prevent the positioning of the nozzle on said stationary support in any other position than the one which will 4bring about the automatic interlock to prevent flow of the liquid when the device is so positioned, and alternatively, when the nozzle is removed from its position, these instrumentalities will automatically unlock the pump or liquid forcing means so that it can be given a manual operation, if desired.

Referring now to the drawings in detail, in Fig. 10 I have shownthe upper portion of the housing, shown'more in detail in Griffith application Serial No. 385,165, to which reference may be had, for purposes of explaining more in detail, if desired, that the housing comprises an upstanding member 2 of preferably sheet metal construction, and embodies a liquid flow pipe 4 connected to a pump or other liquid forcing means, which pump preferably is mounted in the housing, or may be mounted outside of the housing, as shown in the aforesaid Griffith application. This pump, in turn, is connected to a reservoir or tank in the usual customary manner so that when the pump is in operation it will draw liquid from the tank, force it through the conduit 4 and through a delivery valve 6,- ifa delivery valve is desired.

At this point I wish to state that in the present type of apparatus these delivery valves are considered yunnecessary since the nozzle valve control is deemed suicient for governing the flow of liquid through the hose, however, it may be that in certain instances Idesire to provide -the delivery valve 6 in addition to the nozzle valve, or I may eliminate the nozzle valve and control the flow of liquid from the delivery valve 6. This delivery valve may be considered for generic purposes, as a valve controlling the flow of liquid through the hose, as an alternative to the nozzle valve, if desired.

Liquid from the pipe 4 passes through conduit 8 and thence through a usual meter, the dial 10 of which is illustrated inthe drawings, and thence through conduit 12 through the usual sightglass 14, thence through the flexible hose 16 to the nozzle 18, thence through the nozzle valve 20 in a manner well known in the art. The details of my preferred type of nozzle valve are shown in Fig. 1.

In the remote control type of device as shown in Figs. 1 to 11 and 15, the cover 18 is provided with a guard 22, which forms a sort of protective housing for a manually operable nozzle valve operating member 24 in the form of a lever pivoted as at 26 to the body of the nozzle. This lever is adapted to co-operate with another lever 28 pivoted as at 30 to the nozzle. The end of lever 24 is formed to co-operate with lever 28. Lever 24 is adapted to be manually operated by means of the hand when gripping the nozzle, and this lever 24 servesv to operate the nozzle valve 20 and also the lever 28 which remotely controls the pump or other liquid controlling means in a manner about to be described. 4

The nozzle valve 20 is provided with the usual stem 32 and spring 34, which latter spring keeps the nozzle valve on its seat unless manually opened. The end of the valve stem 32 passes outwardly through a usual packing 34' and lies opposite a screw 36 adjustably mounted on the lever 24. An aperture 38 in the. guard permits the adjustment of screw 36. The screw 36 is for the purpose of controlling the opening of the valve 20 at various times in connection with the amount of movement of the lever 24 and consequently the movement of the pump-operating lever 28.

The end of lever 24 is preferably bifurcated as at 40 and 42 to provide a seat for a cross pin 44 on which is mounted a roller having a portion 46 of large diameter and a portion 48 of smaller diameter. This roller is freely slidable longitudinally of the pin 44 and is adapted to cc-operate with the cam lever 28 in the manner shown in Figs. 2 to 8 inclusive, to operate a plunger 50 for operating the pump or liquid forcing means. In the present case this plunger, as shown in Fig. 11, is aplunger of an air valve for controlling the flow of air from any desired source through certain pneumatic connections to the pump operatingA mechanism or other liquid forcing means, as hereinafter will be described.

Referring now to Fig. l, it will be noted that the nozzle valve is closed and the power is off. It will be noted from the position of levers in Fig. 2, and in Fig. 5, which show corresponding positions, that leverl 24 has been raised up to a point. wherein nozzle valve 20 is partially opened and the roller 46' at the end of the lever'has vnot yet contacted lever 28 in such a manner that the power is turned on. When lever 24 is raised.A

' a'little further, there is presented a condition in brackets 75--76, which are secured to the end as shown in Figs.3 and 6 wherein the valve is open and the power has been turned on. Fig. 7 shows the initiation, of the reverse motion, that is, when the nozzle valve is closing and Figs. 4 and 8 show a condition where the valve 20 has been closed but the power is still on. A further `downward movement of valve lever 24 will shut olf the power. This is accomplished by shifting the position of the contact roller 46 by means of the cam surface 54.

By referring to Fig. 9 it will be clearly seen that as the lever 24 is shifted, the roller contacts with the cam surface 56, so that the roller runs up this surface, and then the' roller contacts with the cam surface 52, which moves the roller laterally on its pin onto the narrow lugl 58 of the lever 28. This cam surface is so positioned that the valve is opened, but the lever is not pressed down. This is due, in part, to the smaller diameter of the roller 48. Since this smaller diameter roller rolls up the inclined surface 56, it positions the larger diameter roller 46 on the lug 58. It will be noted that 4the cam portion.56 is somewhat higher than the cam portion 58 of the lever 28. This will accommodate the difference in diameters of the two rollers, and will permit the positioning of the larger roller 46 on the cam portion 58 as shown in Fig. 5 without causing the initial depression of lever 28 during the opening of the valve stem by the lever 24. As the lever 24 continues to move, the valve will open wider and wider andusimultaneously therewith the roller 46 will move along the camshaped portion 58, thereby pressing the lever about its pivot, .and pushing the plunger 50 inwardly so as to actuate the pump or liquid forcing means. On 'the return movement, or as the lever 24 is reversely shifted'fby means of the spring 34, and as the lever 28 is shifted by means of the vspring in the air valve, as hereinafter referred to in Fig. 11, 4the roller 46 will move down the longer lever portion 58 as ,shown by dotted lines. As this^lever`poi'tion 58 is longer than the corresponding lever portion 56, the

lever 28- will be maintained in shifted position so as to keep the pumpA in operation after the nozzle valve stem 32 has been moved back to a position such that-the valve is fully closed.

As the roller 4 6 reaches the end of the eamshaped portion 58, it will strike the inclined portion thereof 54) which will cause the rollers 46-48 to be shifted to the right so as to be opposite the upwardly inclined portion 56 of the lever 28 so that the next time the lever 24 is shifted, the sequence will begin again as heretofore described.

In order to operate the-pump or other liquid forcing means automatically, I have provided a pneumatic motor 65, which is preferably under the control of the operator at the nozzle. As shown in Fig. 15, the motor comprises a casting, the lower en d of which is closed by the screwthreaded cap 66. Within the interior cylinder 67 is a piston 68 to the lower side of which is connected a plunger 69 movable vertically through I the cylindrical guide 70 secured to the cap 66. A'

spring 71 surrounds the cylindrical guide 70 and the cylindrical guide is located between the top of the cap 66 and the bottom of thepistn68.

The plunger' 69 extends through an opening at the center of the cap 66 and its lower end rests upon the horizontal arm 72 which is provided lfwitha collar, not shown, at its left-hand end,

the latter being keyed to the lower end of the rod 74--l The rod 74 is guided throughopenings of the wall of the housing 77, which encloses the delivery valve 6 and the operating mechanism thereof. The upper end of the rod 74 is connected by a pin and slot, as indicated at 78 (Fig. 3) to the crank arm 61 of the delivery valve 6;

therefore, when the pneumatic motor is operated to depress the piston 68 againstthe action of the spring-71, the plunger 69 will actuate the bracket arm 72'and pushdown the rod 74 through the guides and 76, and thereby turn the crank arm 61 in an anti-clockwise vdirection to effect the opening of the valve 6. When air pressure on the piston 68 is relieved, the spring 71 restores the plunger 69 to its initial position and the spring not shown simultaneously restores the rod 74 and the arm 72 to their initial positions, and recloses the valve 6. In order to permit free downward movement of the piston an aii` port is provided at 79.

The cap 66 is shown in Eig. l5.

Air pressure may be conducted into the cylinder 67 through the connection at 80, as shown in Fig. 15. A small flexible pipe, preferably of metal such as copper,y is led upwardly from the connection 80 as shown, to the conduit 82, which is mounted by means of the bracket 83 on the vertical pipe 12. Also extending upwardly into the conduit 82 is a compressed air pipe'84, preferably of flexible metal such as copper. referring to Fig. 10 it will be seen that the pipe 84 is adapted to be connected to a compressed air supply of any desirable type. By means of a suitable air tube adaptor 90, the upper ends of the two metal pipes 8l and 84,l and a flexible hose 87, are mounted on and attached to the delivery hose 16 so as to move bodily therewith. For this purpose the flexible hose 87 may be secured to the delivery hose 16 by spirally wound tape or by means of clamps 88.

Air valve controlling mechanism 89..is connected by means of the air tube adaptor 90 to the flexible pipe 87 having the two air passageways 81 and 84 therethrough. The air valve mechanism 89 may be detachably secured to the valve hose housing 18 as shown in Fig. 1. The details ofthe valve mechanism 89 are shown in Fig. 11.

' 99. Passageway 97 may be closed at 100 by means of a screw plug. The valve stem 101 has mounted thereon two valves 102 and 103. Between the nipple 96 and the valve 102 is a spring 104 which urges the valve 102 to closed position. The valves 102 and-103 are so related that when the port- 98 is closed, port 99 is op2n.- When the valve 103 closes the port 99, the valve 102 opens the port 98. When the valve 102 is closed, communication 'from the source of compressed air through pipe 84 to thepneumatic motor l65 is shut off. When the valve 102 is closed, valve 103 is opened, and at this time the pneumatic motor 65 is connected through the pipe 81 to the passageway ,97 and the port 99 to the chamber 105 and exhaust port 106, thereby relieving the air pressure on top of the piston 68 and permitting thespring 71 to return the piston to its initial position as shown in Fig. l5.

Aslshown in Fig. 11, the plunger 50 extends the closed vacuum through a bearing 108 which is threw-threaded into one end of the cylinder 109. At the inner end of the plunger 50, is a piston movably along the cylinder 109. An inner end of the plunger 50 is provided with a recess 111 fitting over the valve stem 101. The piston 110 presses against the spring 112 when the plunger 50 is moved inwardly. The inward movement of the plunger causes the piston 110 to act as a valve to cut off the exhaust port 106 from the chamber 105,' and the port 99. 'I'his is followed by the closureof the valve 103 and the opening of the valve 102 when sufficient force is exerted on spring 112 to counteract the spring 104. It is desirable to close the port 106 before the valve 102 is opened so that compressed air cannot escape from the supply passageway 84 through the exhaust port during the interval when the valves y102 and '103 are both open.

By referring to Fig. 1 it will be seenV that when the nozzle is grasped in the operators hand with his palm over the valve, his ngers may be used to move the lever 24 inwardly away from the guard and this operation will open the valve `20. 'Beforethe valve 20 is open,

however, the'roller end of the lever will ride along the cam faces of the lever 28 in the manner hereinbefore described.

As shown clearly in Fig. 15, an extension 141 is carried by the bracket arm 72 andto this extension 141'is pivoted at 142 a bar 143, which has sliding connection through a diametrical opening in the' shaft 144. This shaft is mounted in the bearings 145 of the switch box 146. Mounted on the inner end of the shaft 144 are suitable means for engaging the opposite surfaces of the vacuum tube 148 preferably of glass and containing within the same quantity of mercury for engaging the terminals and 151, which project into the last vacuum tube 148, as illustrated in Fig. 14. The terminals of the vacuum tube are suitably connected to a source of current, as illustrated in the prior Griilith application Serial No. 385,165, whereby on rocking of the mercury tube, the switch will be made or broken to start and stop the electric motor operatively-connected to the pump or to operate any type of valve or other mechanism for controlling the liquid forcing means of any desired type.

It is usually understood that when the operating lever 24 of the nozzle valve is shifted, exhaust port 106, as shown in Fig. 11, will be nrst closed and this will be followed by the closing of the valve 103 and the opening of the valve 102. The air pressure supply will then pass into pipe 84 and thence through the passageway of the flexible hose 87. This air pressure will then pass through the port 98 and passageway 97 into the passageway 81, and the top of the cylinder 67. The piston 68 will move downwardly against the action of the spring 71 while the air below the piston 68 will be exhausted through port 79. This will cause the plungerA 69 to be moved downwardly to pull rod 74 downwardly, thereby operating the crank 61 in an anti-clockwisedirection to cause the delivery valve 6 to open, to aord communication between the supply pipe 4 and the pipe 8 leading to the dispensing hose 16. At the same time the delivery valve 6 is opened, the mercury switch will be'tilted to horizontal position from its inclined position. 'Ihe mercury in tube 146 will thereupon connect the terminals 150 and151 to start the motor, to continue operating as long as .the terminals are connected by the mercury 139. When the motor is operated, pump 16 will operate to pump gasoline through the suction pipe and supply it to the pipe 4, delivery valve 6, through pipe 8 to the delivery hose 16 in a manner well known in the art.

It is understood that mentioned Grilth application.

When the operator releases the' lever 24, the spring 34 closes the nozzle valve 20 and returns the lever 24 to its initial position. At the same 10 time the plunger 50 is returned to its initial positi'on by the springs 104 and 112 and the lever 28 will thus be returned When the operator releases the lever 24 and therefore the lever 28, the spring 104 is free to act to close the valve 102. This will also effect the opening of the valve 103 when the spring 112 in turn acts on piston 110 to uncover the exhaust port 106 so that a. chamber 105 will be connected to the atmosphere. This will result in the cylinder 67 being connected to atmosphere above the piston 68 through pipe `81, passageway 97 and port 99, chamber 105 to exhaust port 106. A spring, not shown, in the valve 6, will then close the valve and act through rock-shaft 52 -and the crank of said valve to lift rod 74 back to its initial position. This will also lift the extension 141 to its initial position and swing the rod 143 to its position, whereupon the mercury switch will be tilted, .thereby disconnecting the terminals 150 and `151 and cutting off the electrical current supply to the motor causing the pump 16 to stop.

In Figs. 12 and 14 I have disclosed a modification of myv invention wherein I provide a manually operable control means, preferably positioned on the side of the housing for operating the pump, and a liquid delivery valve in the desired sequence above set forth. `In thisconstruction the housing is provided with a preferably mushroom-shaped manually operable head 162 originally mounted on a shaft 164 to which is aiiixed a crank 166, having a rod 168 connected thereto. This rod passes downwardly and it is adapted to operate a vertically slidable rod 170 having its lower end pivotally connected as at 172 to a lever 174 in turn pivoted as at 176 in the switch-housing. The inner end of thisllever 174 is provided with abifurcated hea`d carrying a roller, the same type as is to 9 inclusive, and in turn co-operates with a lever 178 having its inner end configured exactly like the lever 28 of Fig. 9. This lever 178 is pivoted as at 180 and suitable spring to return the lever to desired normal position. The upper portion of lever 178 is a mercury switch 148 as hereinbefore In this device, the rod 170 is provided with a slot and pin connection 182 with a link 184 in turn connected with a crank arm 186 connected to a shaft-188 in which is disposed a delivery valve of any desired construction, but preferably as shown in'the prior mentioned Griffith applicationv Serial No. 385,165. By reason of this construction, when the head 162 is turned, the rod 168 is operated to shift the sliding rod 170 vertically whereby to cause movement ofthe link 184 and movement of lever 174 to securethe same sequence of operation as in connection with Fig. 1. t

In connection with the device for manually controlling a delivery valve and for operating the pump switch, I provide the housing -160 with a stationary support adapted to receive the nozzle 75 the pump is provided 5 with the usual by-pass, all as shown in the prior to its former position.'

illustrated in Figs. 14

provided with y described.

hereinbefore described 70l when not in use. In this connection thewall 160 of the housing is provided with a vertically disposed recess 190 to receive the flexible portion of the nozzle and I preferably provide a depending lip portion 192 which is adapted to overhang the end of the nozzle when inserted in its vertical seat. In addition the lower end of the housing stops at the point 194 to co-operate with a lower rim portion 196 of a lower portion of the housing to providean opening of sufcient height and width t accommodate the nozzle proper, and so that the guard of the nozzle and the nozzle lever 24 will lie within the exterior planes of the housing, whereas the portion 18 of the nozzle will lie outside of the exterior planes of vthe housing. In addition I preferably provide the housing with two outstanding ears 192 which have downwardly slanting surfaces 195 and which are provided with registering apertures 197 through which a padlock 198 may be passed when the nozzle is in its seated position. In addition I provide within the housing and opposite the opening a pivotally mounted interlocking device comprising an abutment 199 suitably weighted as at 200 and pivotally mounted as at 202. This abutment is provided with an upstanding arcuate toe 204 which in one position is adapted to underlie the pin 206 which interconnects the vertical slide rod 170 and the link 184. The operation is such that when the nozzle is placed in position on its seat the nozzle guard will` force the abutment`198 inwardly and upwardly and thereby cause the rigidly mounted arcuate toe 204 to ride under the pin 206 interconnecting the rod 170 and the link 184. When in this position it willv be impossible to operate the head 162 to either open the valve or operate the pump switch. When the nozzle 1ever is withdrawn they weight 200 of the abutment will swing down to such a position as to' substantially close the opening in the housing and the toe 204 will shift to a position from under the pin 206, thereby permitting the manual operation of the control member 162 to both open the delivery Valve and to operate the switch for the pump, or its equivalent. It will be noted that when the nozzle is in position shown in Fig. 12, and the padlock passed therethrough, the nozzle will be locked through the housing;l the pump control member and the valve control member 162 -will be locked in inoperative position and it will be impossible to reach the nozzle valve delivery valve to operate the same, due to the fact that it lies within the exterior planes of the housing and is shielded from access by means of the nozzle itself. It will also be appreciated that by reason of the sloping sides 194 of the two ears -192, the nozzles cannot be hung sidewisev on the ears, but can be only seated in their proper place in such position as is indicated in the drawings, whereby means is-provided for automatically locking the pump operating means or valve opening means from operation when the nozzle is placed upon its support.

It must be obvious by referring to Fig. 1 of the drawings that in lieu of using an air valve 89 and its co-operating mechanism shown in Fig. 15 of the drawings, that Iv am enabled to operate my pump and nozzle valve in the desired sequence in a remote controlled manner by substituting a solenoid for the device 89 and having proper electrical connections f cr causing the operation of the pump vswitch therefrom in the manner set forth in a co-pending application led by Junius F. Cook and James Ballard Moore, to which reference is made for a fuller disclosure of said invention, or I may utilize any type of Bowden wire device such as shown in the patents to Stedwell or Hawxhurst for causing the operation of the pump switch by the operation of a plunger 50 shown in my present drawings, or alternatively, I may cause the plunger 50 to operate one end of a sylphon construction containing oil, the interior of which sylphon is connected with a exible hose likewise full of liquid and extending along the flexible hose 16 and likewise connecting at the other. end to a sylphon which, in turn, is adapted by its movement to operate a lever mechanism 143 of the pump switch, as shown herein, whereby upon operation of the plunger 50, operating on the sylphon system, the liquid column will cause the operation of the lever 143 to operate the mercury switch vin accordance with my disclosed sequence of operation in connection with the nozzle valve mechanism.

Having thus described my invention, Iwhat I claim .as new and desire to secure by Letters Patent is:

1. In a liquid dispensing system, a liquid delivery line'terminating in a flexible hose, controllable means for supplying liquid through said line and hose, a vvalve controlling discharge through the hose, and operating means for starting the liquid supplying means and opening the valve simultaneously and for closing said valve and for stopping said means after the valve has been closed. l

2. In a liquid dispensing system, a liquid delivery line terminating in a flexible hose, controllable means for supplying liquid through said line, and operating means for opening the valve and then starting the liquid supplying means and for then closing said valve and stopping said means after the valve has been closed.

3. In a liquid dispensing system, a liquid disy pensing hose having a nozzle valve, a flexible connection extending from the nozzle valveback along the hose, flow regulating means actuated by said flexible connection, a flow meter in service relation to the hose, and instrumentalities associated with said flexible connection and said nozzle valve, arranged to prevent pressure on said nozzle valve, prior to its opening and to maintain pressure on said nozzle valve after its closing. 4. In a liquid dispensing system, a liquid delivery line terminating in la flexible hose, con.

trollable means for supplying liquid through said line and hose, a nozzle valve controlling discharge from the hose, and operating means for. starting the liquid supplying means and for opening the nozzle valve simultaneously with the operation of said means, and for closing said nozzle valve and stopping said means after the nozzle Valve` has been closed.

5. In a liquid dispensing system, a liquid delivery line terminating in a ilexible hose, controllable means for supplying liquid through said line vand hose, a nozzle valve controlling discharge through the hose, and operating means for opening said nozzle valve and then starting the liquid supplying means and then for closing the nozzle valve and then stopping said means after the nozzle has been closed.

6. In a liquid dispensing system, a delivery line, a hose connected therewith, a delivery controlling valve in said delivery line, an electric control switch, and operating means for opening the delivery valve and closing the switch simultaneously and for opening the switch after 4the delivery valve is closed.

7. In a liquid dispensing system, the combination of a hose terminating in a nozzle having a valve, a manually for opening said valve, means providingvan adjustment Iordetermining the time of opening of said valve with respect to the movement of the vopening of said manually operable means, a shiftable device mounted on said nozzle and operated by the movement of said manually operable means, a pump, means for actuating said pump including a control device operated by said shiftable device, and means operatively interconnecting the manually operable means and the shifting device, whereby the pump will be maintained in operation after the closing of said valve and whereby the pump will be started simultaneously with or subsequently to the opening of said valve;

8. In a liquid dispensing device, in combination with a hose providedwith a nozzle, a valve in said nozzle, a lever mounted in said nozzle and adapted to be manually operable to open said valve, said lever having at its extremity a roller having diametral portions of different dimensions, a second lever mounted on said nozzle and arranged in the path of movement of said iirst mentioned lever, a shiftablemember adapted to be actuated by movement of said second lever, remote control connections from said shiftable member, a pump, operating meansV for said pump including a switch connected to said remote control connections, said second lever having two portions, one of which is shorter than the other, said portions having cam-shaped surfaces whereby upon actuation of said iirst-mentioned lever, the smaller diameter of said roller will be caused to ride upon said shorter portion and move laterally thereon onto the longer portion without substantially ,shifting said second mentioned lever and will thereafter ride along said longer portion to depress said lever and upon return movement of said first mentioned lever, said roller operable means on said nozzleA ate remote control connections passing along thel and connections becam surfaces on one hose to the pump switch, tween said levers including reversely roll on of said levers and an operating member carried on the other of said levers whereby upon the actuation of one of said levers saidl valve will be opened and said remote control connections will be operated, whereby said pump will not be operated until the valve opens and whereby upon return movement of said lever said pump will be maintained in operation after the closing of said valve.'v

10. In a liquid dispensing device, vthe combination of an upstanding housing, a meter in said housing, a.V liquid dispensing line, a pump for passing liquid through said line and through said meter, said line terminating in a hose outside of said housing, said hose being provided with a nozzle, a`valve for controlling the flow of liquid through said line, a member projecting from said housing for opening and closing said valve, a` connection from saidmember to said pump switch including instrumentalities whereby upon the opening of said valve, said pump switch will not be operated until at least the opening of said valve and whereby upon the closing of said valve said pump switch will be maintained in pump operating position until after the closing of said valve. Y

CARL E. C ARLSON.

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