US3178057A

US3178057A - Pump operating mechanism

Info

Publication number: US3178057A
Application number: US350982A
Authority: US
Inventors: Lowell F Nelson
Original assignee: John Wood Co
Current assignee: John Wood Co
Priority date: 1964-03-11
Filing date: 1964-03-11
Publication date: 1965-04-13
Anticipated expiration: 1982-04-13
Also published as: ES308866A1; CH436005A

Description

April 13, 1965 L. F. NELSON PUMP OPERATING MECHANI SM Filed March 11, 1964 wir 6 'Sheets-Sheet 1 INVENTOR LOWELL F. NELSON ATTORNEY April 13, 1965 L. F. NELSON PUMP OPERATING MEGHANISM 6 Sheets-Sheet 2 Li mTERLocK\.

Filed March 1lI 19(34 INVENTOR LOWELL F NELSON ATTORNEY L April 13, 1965 L. F. NELSON PUMP OPERATING MEGHANISM 6 Sheets-Sheet 5 Filed March 1l, 1964 INVENTOR LOWELL F. NE

LSON

ATTORNEY FIC-3.3

April 13, 1965 L.. F. NELsoN PUMP OPERATING MECHNISM 6 Sheets-Sheet 4 Filed March 11,` i964 FIG.4

INVENTOR LOWELL F. NELSON ATTORNEY April 13, 1965 1 F. NELSON PUMP OPERATING VIEGHNISMk 6 Sheets-Sheet 5 Filed March ll,- 1964 INVENTOR LOWELL F. NELSON ATTORNEY April 13, 1965 L. F. NELSON 3,178,057

PUMP OPERATING MECHANISM Filed March ll, 1964 6 Sheets-Sheet 6 LNVENTOR LOWELL F. NELSON ATTORNEY lnited States Patent O PUMP PERATHNG MECHANISM Lowell E'. Neison, Muskegon, Mich., assigner to John Wood Company, New York, NX., a corporation of Delaware Filed Mar. 11, 1964, Ser. No. 350,982 l Claims. (Cl. 22235) My invention relates to pump operating mechanism, which Iis particularly adaptable lfor -turning on and off the pump motor of a gasoline pump dispensing apparatus or dispenser. Y

Hereto'fore, the turning on and off of the pump motor was effected `by means of a rather complicated linkage, which has many parts and loose joints which made it difficult `to properly adjust in manufacturing. The many parts of the currently used type of linkage are costly to manufacture, and such a linkage may lose its proper adjustment in the shipping of the gasoline pump, even though the linkage initially was properly adjusted when the gasoline pump was shipped `from the manufacturing plant.

Adjustment and replacement of some parts of such currently used type of linkage is frequently required when the gasoline pump is installed and in use in a service station, etc. In some models of gasoline dispensing apparatus, the adjustment of the motor switch so as to open and close said switch in proper sequence with the interlock of the well-known and commonly used computer, is a very sensitive adjustment, and the cause of many service complaints. In addition, the overload spring of the -commonly yused linkage, which overload spring -is required to prevent breakage of the computer elements if an operator endeavors to turn the switch to closed position without a resetting of the computer dial `Wheels to zero, has sometimes imposed too great a load on the cornputer mechanism, which results in a breakage of some gof its parts.

One object of my invention is to provide a gasoline dispensing apparatus with a nozzle boot holder Iwhich is adapted to support all of the various types of gasoline dispensing nozzles at the distal end of the dispensing hose, and which apparatus is provided with a motor switch operating handle of such a design as will prevent the dispensing nozzle from being supported in the boot holder until the pump motor switch has been opened.

Another object of my invention is to provide an operating handle to effect the turning on and off of the pump motor in the normal manner, and which operating handle is of such shape that it will close off the opening of the nozzle yboot holder when the pump motor switch is in closed position.

Another object of my invention is to provide ya motor switch `operating handle which is of a T or wing shape which ywill keep the opening in the nozzle boot holder covered continuously when the pump motor switch is in closed position, and which will maintain the opening in the nozzle boot covered until the motor switch operating handle has been turned back in a clockwise direction to effect the opening of the pump motor switch.

Another object of my invention is to provide an operating mechanism which will prevent the pump motor switch to again be turned to closed position after a dispensing operation until the pump computer has been reset to zero by a reset lever such as has been in common and wellknown use for many years.

Another object of my invention is to provide the operating handle shaft at its inner end with a clutch face, adapted to be engaged with `a mating clutch face operatively connected to the com-puter shaft.

Another object of my invention is to provide a pump operating mechanism consisting of a minimum number of Patented Api'. 13, 19565 parts which are simple to manufacture, and with a resultant low manufacturing cost. j

Another object of my invention is to provide a pump operating mechanism which has only one point of adjustment, to wit, the motor switch at a cam surface, which eliminates service problems in the field of adjusting a number of parts, etc. in the previously used linkage.

Another object of my invention is to provide pump operating mechanism which includes mating clutch elements which provide a more positive and fool-proof device which assures protection lfor the computer.

My invention may be more fully understood and further objects -and advantages may become apparent when reference is made to the more detailed description of the invention with respect to the accompanying drawings.

In said drawings: y

FIG. A1 is a fragmentary sectional View, partly in elevation, of the upper portion of a gasoline pump dispense-r, and with the dispensing nozzle, at the endof the dispensing hose, positioned in the nozzle boot holder.

FIG. 2 -is a side elevation of the upper portion o-f a gasol-ine pump which includes my operating mechanism, and with the various positions of the motor switch operating handle identi-tied. j l

FIG. 3 is an exploded view of my improved operating mechanism, including the motor switch box assembly.

FIG. 4 is a vertical sectional view of the switch box assembly, partly in elevation, taken on the line 4 4 in FIG. 1.

FIG. 5 is a front face -View of the clutchl half at the inner end of the shaft connected to the motor switch operating handle.

fFIG. 6 is a modified form of pump operating mechanism generally `similar to 4that shown in FlG. l, but with a clutch half rigidly connected by pin means to the inner end of the operating shaft of the motor switch operating handle.

FIG. 7 is an exploded View of the modified Aform of pump operating mechanism shown in FIG. 6.

yReferring more particularly to FIGS. 1 and 2 of the drawing; `a fragmentary portion of the upper part of the outer housing of a gasoline dispensing computer pump of the well-known type is indicated generally at 1. Such a type of gasoline dispensing computer pump is shown in U.S. Design Patent Nos. Des. 184,25() and Des. 197,248. The upper portion of the outer housing 1 is provided with a nozzle boot 2 which has an open outer end 3 of the upperwardly inclined nozzle boot 2. The nozzle portion 5 of the manually operative valve controlled dispensing nozzle 6 i-s inserted in the nozzle boot `2, when the motor switch opera-ting handle 7 is in OFF position as shown in FIG. 2, and in which position the motor switch 10 is open.

The dispensing nozzle 6 is screw threadedly connected to the outer end of the gasoline dispensing hose 9, the inner end of said hose 9 being connected to the outlet of the gasoline pump meter, in the ordinary manner as is well-known in the art. The handle portion 11 of the dispensing nozzle 6 is :adapted to be positioned on the dispensing nozzle support 12 rigidly connected to the outer housing 1, by any convenient means, such as a cap screw 13 which extends through an open-ing in the outer housing 1 into a screw threaded opening in the nozzle handle 12.

The motor switch lil is connected by suitable wiring means, such a-s indicated at 15, .to a source of supply of electrical current, and said motor switch 10is also connected by suitable wiring to the electric motor of the pumping unit, in the customary manner well-known in theart.

Referring more particularly to FIG. 2, when the nozzle portion 5 of the dispensing nozzle 6 is manually withdrawn from the opening 3 in the nozzle boot 2, a motor switch operating handle 7 may be moved counterclockwise from the OFF position to the ON position, which, as hereinafter more described in detail, will close the motor switch 10 and cause the electric motor connected to the pumping means to operate.

As noted on FIG. 2; the motor -switch operating handle 7 with its shaft is rotated through an arc of approximately 88 in its incomplete movement from OFF position to ON position. When the motor switch operating handle 7 is moved counterclockwise from its OFF to its ON position, the T or wing shaped portion 16 of the handle 7 is positioned over the open outer end 3 of the nozzle boot 2, thereby preventing dispensing nozzle from being positioned in the nozzle boot 2 as long as the motor switch 10 is closed.

After a gasoline dispensing operation has been completed by the operator, the motor switch operating handle 7 is moved clockwise from ON position to OFF position, which will permit the nozzle portion S of the dispensing nozzle 6 to be again positioned in the nozzle boot 2.

As noted on FIG. 2, when the motor switch operating handle 7 has been moved through an are of approximately 50 from the ON position, the motor switch 10 is opened. As also noted on FIG. 2- of the drawings, the interlock mechanism of the well-known and widely used computer mechanism becomes effective when the motor switch operating handle 7 is within a small number of degrees of its approach to said 50 position where the motor switch I@ is opened. Also as noted on FIG. 2 of the drawings, when the motor switch operating handle is moved counterclockwise of an arc of approximately 66, the connection to the computer unit becomes effective, providing the computer dial wheels have been reset to zero by means of the reset handle 20 which is rigidly connected to the reset shaft 21 which is connected at its inner end to the universal link and pin assembly 22 of the computer reset shaft 23. n

Bliss Patent No. 2,814,444, assigned to Veeder-Root, Incorporated, shows the computer interlock and the connection between the computer shaft and the reset shaft operated by means of a reset handle, such as .the reset shaft 23-21 and reset handle 20 described above. Veeder- Root, Incorporated is the manufacturer of practically all of the standard computer units in gasoline computing pumps in use in the United States made by all U.S. gasoline computing pump manufacturers. Wright Patent No. 2,942,759, correspondingly, refers to Bliss Patent No. 2,814,444 as showing the connection between the computer shaft and the reset Ishaft operated by means of a reset handle.

Referring more particularly to FIGS. 1 and 3; the motor switch operating handle 7 is rigidly connected by any convenient means, such as pin means, to the shaft 2S. The shaft 25 extends through the opening 26 in a bushing member in the plate member 27. and through a matching enlarged opening formed in the pump housing 1, and through an enlarged rectangular opening 29 in the bracket member 30. The plate members 27 and bracket member 30 are rigidly secured to the housing 1 by any convenient means, such as screw members 32 which extend through matching openings in said plate 27, housing 1, and bracket member 30, said screw member 32 being rigidly secured by nut 32a, only one of said screws 32 and nuts 32a being shown in the exploded view FIG. 3.

The spring 33 surrounds the shaft 25, with the outward end of the spring 33 bearing against a boss formed on the inner surface of the plate member 27, and the inward portion of said spring 33 surrounds the hub 40 of the clutch member 4I and bears against said clutch member 4I, as shown in FIG. 1. The inward end of the shaft 25 is provided with standard

automotive non-rok keys

36 and 36a which are slideable, respectively, in the

grooves

37 and 37a in the hub portion 40 and the inclined cam faced clutch disc member 41. The clutch disc 41. is

shown in the exploded view FIG. 3and the engaging face of the clutch half on the shaft 25 is shown in FIG. 5. The shaft 25 and its operating handle 7 are prevented from moving outwardly by a snap ring 42 in a groove formed in said shaft 25, said snap ring 42 and its groove being positioned on the shaft 25 so that the snap ring is positioned to slidingly engage the inward surface of the plate member 27.

If the computer mechanism has not been reset to zero by the reset handle 2b, and the motor switch operating handle 7 is moved counterclockwise, the computer will not turn on because it has not been reset to zero. To prevent damage to the computer in such a situation, continued counterclockwise movement of the motor switch handle 7, is prevented by a stop pin 43 on the plate membei' 27 coming -into engaging abutment with the Wall of a recess 4S formed in the back portion of the motor switch operating handle 7, as shown in the exploded View FIG. 3.

The shaft 47 is provided at its outer end with a reduced portion 48 which is adapted to be slidingly engaged in a drilled opening at the inner end of the shaft 2S, to maintain alignment of member 41 with the mating cam faced clutch member 50 rigidly mounted on the outer end of the shaft 47 by any convenient means, such as by a pin 52 extending through the clutch member E@ and shaft 47. The cam 53 which is floatingly mounted on the shaft 47 is provided with a drive lug, or pin, 56 which is adapted to come into engaging contact with the side wall of .the recess 57 formed on the inward side of the clutch member 50, asbest shown in FIG 1, and as shown and indicated in the exploded view FIG. 3. A washer 59 is interposed on the shaft 47 between the inner face of the clutch member 50 and the outer face of the cam member 53. A washer, or plurality of washers o@ are interposed on the shaft 47 between the inward face of the cam 53 and the outer face of the snap ring 62 positioned in a groove 63 formed at the inner portion of the shaft 47. A washer 65 is interposed on the shaft 47 between the inward face of the snap ring 62 and the outward face of the web portion 34 of the bracket member 30, which web 34 is provided with an opening 31 through which the slotted inner end 65 of the shaft 47 extends, as shown in FIG. l. The slotted portion 68 of the shaft 47 is adapted to be operatively engaged with the universal link and pin assembly 70 at the outer end of the shaft 71, the inner end of which correspondingly is provided with a universal link and pin assembly 72 adapted to be engaged with a shaft of the computer to turn the computer to on position, in the manner as is well known in the art.

The motor switch 10, rigidly mounted in the motor switch housing 74, which ha-s a closure plate 75 connected thereto by any well known means, such as a series of screws 76, one of which is shown in FIG. 3, includes a motor switch plunger 78 and a switch shaft 79, the upper end of which is in engagement with the lower end of the .plunger 78. Said switch shaft 79 extends through an opening formed in the bottom wall of the housing 74 of the motor switch, and said switch shaft 79 is provided at its lower end with a follower member 81 which is rigidly secured to the end of the shaft 79 by any convenient means, such as by a cotter pin 82 extending through said follower 81 and shaft 79. A spring 83 is interposed around the shaft 79 between the upper end of the follower S1 and the lower side of a boss 85 formed at the bottom wall of the switch housing 74.

Referring to FIGS. 6 and 7, the modified form of my invention shown therein is generally similar to that shown in FIGS. 1 to 5, inclusive, the principal difference being that the clutch face disc at the inner portion of the shaft to which the motor switch operating handle is rigidly aixed is adapted to move as a unit outwardly when the clutch disc is moved out of engagement with the mating clutch disc on the outward end of the shaft adapted to be engaged with a shaft of a computer to turn the computer to ON position.

Referring more particularly to FIG. 6; a fragmentary portion of the upper .part of the outer housing of a gasoline dispensing computer pump of the Well known type is indicated generally at 101. Such gasoline dispensing computer pump is of the same type as that heretofore noted in connection with FiGS. 1 to 5, inclusive. The upper portion of the housing 101 is provided with a nozzle boot 1&2 which has an open outer end for the insertion of the nozzle portion 165 of the manually operative valve controlled dispensing nozzle 166. The nozzle portion 195 is inserted in the nozzle lboot 102 when the motor switch operating handle 107 is in OFF position as heretofore described with reference to FIG. 2. The movement and operation of the motor switch operating handle 167 is the same as that heretofore described with reference to FIG. 2 of the motor switch operating handle 7 of the form of my invention shown in FGS. l to 5, inclusive. The motor switch operating handle 167 functions in the same manner with reference to the motor switch 116, as indicated in FIG. 7, in the same manner as the motor switch operating handle 7 in connection with the motor switch 16 of the form of my invention shown in FIGS. l to 5, inclusive.

The dispensing nozzle 165 is screw threadedly connected to the outer end of a gasoline dispensing hose, in the same manner as heretofore described with reference to the nozzle 6 and the dispensing hose 9, with the inner end of said dispensing hose being connected to the outlet of the gasoline pump meter, in the same ordinary manner as is well known in the art. The handle portion 111 of the dispensing nozzle 1&6 is adapted to be positioned on the support 112 rigidly connected to the outer housing 161.

The motor switch 1li? is connected by suitable wiring means, such as indicated at 11S to a source of supply of electrical current, and said motor switch 110 is also connected by suitable wiring to the electric motor of the pumping unit, in the manner well known in the art.

The movement and functioning of the motor switch operating handle 107 and its wing shaped portion 116 is the same as that heretofore described of the motor switch operating handle 7 with reference to FIG. 2, of the form of my invention shown and described in FIGS. l to 5, inclusive.

The reset handle 12d is rigidly connected to the reset shaft 121 which is connected at its inner end to the universal link and pin assembly 122 of the computer reset shaft 123, as heretofore described with reference to the reset handle 26, etc., of the form of my invention shown in FIGS. l to 5, inclusive.

The motor switch operating handle 167 is rigidly connected by any convenient means, such as pin means, to the shaft 125. The shaft 125 extends through the opening 126 in a bushing member in the plate member 127, and through a matching opening formed in the pump frame 191. The plate member 127 is rigidly secured to the housing 101 by any convenient means, such as screws 132 which extend through matching openings in said plate 127 and housing 161, lsaid screws 132 being rigidly secured by nuts 132e, as shown in the exploded view FIG. 7.

The spring 133 surrounds the shaft 125, with the outward end of the spring 133 bearing against the inner surface of the plate member 127, and the inward end of said spring 133 bearing against the outward surface of the inclined faced clutch disc member 141. The clutch disc 141 is rigidly secured to the inner portion of the shaft 12S by a pin 142 extending through the clutch member 141 and shaft 125.

If the computer mechanism has not been reset to zero by the reset handle 12u, and the motor switch operating handle 167 is moved counterclockwise the computer will not turn on because it has not been reset to zero. To prevent damage to the computer in such a situation, continued counterclockwise movement of the motor switch handle 1117 is prevented by a stop pin 143 coming into engaging abutment with a recess 145 formed in the back portion of the motor switch operating handle 1417, as shown Iin the exploded view FlG. 7. The same stop pin 143 provides a positive stop in the clockwise movement of the handle 107 to prevent damage to the computer in movement of the handle to OFF position.

The shaft 147 is provided at its outer end with a reduced portion 148 which is adapted to be slidingly engaged in a drilled opening at the inner end of the shaft 12S, to maintain alignment of the mating inclined cam faced clutch member 150 which is rigidly mounted on the outer end of the shaft 147, by any convenient means, such as by a pin 152 extending through the clutch member 15d and shaft 147. The cam 153 which is iioatingly mounted on the shaft 147 is provided with a drive lug, or pin 156 which is adapted to become into engaging contact with 'the side wall of the recess 157 formed on the inward side of the clutch member 150, and as best shown and indicated in the exploded view FIG. 7. A washer 159' is interposed on the shaft 1d? between the inner face of the clutch member 15@ and the outer face of the cam member 153. A snap ring 162 positioned in a groove 163 formed at the inner portion of the shaft 147, prevents inward movement of the cam 153 on the shaft 147. The inner end of the shaft 147 is provid-ed with a universal link and pin assembly 172 adapted to be engaged with a shaft of the computer to turn the computer to on position, in themanner as is well known in the art, and heretofore described with reference to the form of my invention shown in FIGS. l to 5, inclusive.

The motor switch 110, is rigidly mounted in the motor switchhousing 174 which has a closure plate 175 connected thereto by any well known means, such as a series of screws 176, as indicated in FIG. 7.

The follower is rigidly mounted at the lower end of the switch shaft 151 by any convienent means, such as by a Cotter pin 182. The switch lshaft 131 extends through an opening in the boss 183 formed at the lower wall of the motor switch housing 174. The follower 130 rides along the large diameter of the cam 153 as the cam 153 is moving counterclockwise, and then due to the effective forces of the spring 185, the lower end of which engages the top surface of the follower 131i with the upper end yof the spring 1&5 engages the lower face of the boss 183, the follower 1&0 is driven downwardly when the cam 153 has been rotated to its smaller diameter portion. The downward movement of the follower 18u pulls the motor switch shaft 131 downwardly, allowing the switch plunger 1de to ride down inclined surface 187 of the switch shaft 181 to the ON position, thus closing the circuit to the pump motor.

Operation Referring to the fon-m of my pump operating mechanism invention shown in FIGS. l to 5, inclusive; the linkage consists of two shafts 25 and d?, which are piloted together in axial alignment by means of a reduced portion d8 of the shaft 47 being slideably engaged in an opening in the inner end of the shaft 25'. The shaft 2S has at its inner portion a clutch disc d1 which is slideably connected to the inward end of the shaft 25 lby means of non-rok keys 36 and 15a in slideable engagement with

recesses

37 and 37a in the clutch disc members 41; and the shaft 47 has a mating clutch disc member 5@ rigidly connected at the outward end of said shaft d?.

In normal operation, after the nozzle 6 has been manu- .ally removed by the operatorl from its position in the nozzle boot 2 of the outer housing of the gasoline dispensing apparatus; the operating handle 7 is turned counterclockwise, as in FIG. 2, which effects the turning of the shaft 2S counterclockwise `to which the operating handle 7 is pinned.`

The effective forces of the spring 33 moves the angled faces of the

clutch disc members

41 and 50 into mating engagement with each other, clutch disc member 41 being moveable along the outer plane portions of the nonrok keys 36 and 35a on the shaft 25. The mating engagement of the

clutch disc members

41 and 50 provides the torque to rotate the shaft 47, which through the

universal linkage

70, 71, and 72 operatively engaged in the slotted end 68 of the shaft 47 effects the turning of the computer to on position. The recess 57 at the rearward side of the clutch member 50 provides lost motion for the purpose of delaying the effecting of the closing of the switch until the computer is in the on position, and then the end of the recess 57 picks up the drive lug 56 of the cam 53, which is in floating engagement on the shaft 47, and drives the calm 53 in a counterclockwise direction.

The follower 81, which is attached to the switch shaft 79 by means of the cotter pin 82, rides along the large diameter of the cam 53 as it moves counterclockwise, and, due to the effective forces of the spring 83, the follower 81 and switch shaft 79 are moved downwardly when the cam has rotated to its smaller diameter. The downward movement of the follower 81 causes the switch shaft 79 to move downwardly, which allows the switch plunger 75 to move downwardly to its on, or closed, position, thus activating the electric motor of the pump.

In turning the switch 10 to off, or open position, the motor switch operating handle 7 is moved clockwise, and, hence, the shaft 25 and clutch disc member 41 are driven clockwise. In this clockwise movement, the square faces of the clutch member 50 provides a positive drive means without the necessity of any assistance from the spring 33. The recess 57 in the inward side of the clutch 50 then delays the movement of the cam 53 in a clockwise direction until the computer is driven by the shaft 47 to its locked out condition. The drive lug 56 of the cam 53 then engages the end of the recess 57 in the clutch disc 50 and drives the cam 53 clockwise. The follower 81 rides up the inclined small diameter of the cam 53, and when the follower 81 engages the large diameter of the cam 53, the follower 81 and the switch shaft 79 are moved upwardly, which effects upward movement of the switch plunger 73 to move the switch 10 to open, or off, position which causes the motor of the pump to be deactivated.

If the computer has not been reset to zero by the operation of the reset handle 20, etc., and the rnotor switch operating handle 7 is moved counterclockwise toward ON position, the computer will not be turned on. To prevent damage to the computer from the forcing of the motor switch operating handle 7 in a counterclockwise direction, the inclined faces of the

clutch members

50 and 41 are caused to cam off each other, which forces the faces of the

clutch members

50 and 41 apart, thus disengaging the shaft 25 from the shaft 47. Continued counterclockwise movement of the motor switch operating handle 7 is prevented by the stop pin 43, on the plate member 27, riding in the recess 45 at the back of the handle 7. This same stop pin 43 provides a positive stop in the movement of the motor switch operating handle 7 in a clockwise direction, thereby preventing damage to the computer in the movement of the handle 7 to the OFF position.

Referring to the modified form of my pump operating mechanism shown in FIGS. 6 and 7; the linkage includes' two

shafts

125 and 147, which are piloted together in axial alignment by means of a reduced portion 14S of the shaft 147 being slideably engaged in an opening formed in the inner end of the shaft 125. The shaft 125 has at its inner portion a clutch disc member 141 rigidly fixed thereto, and the shaft 147 has a mating clutch disc member 150 rigidly connected to the outward end of said shaft 147.

In normal operation, after the nozzle 106 has been manually removed by the operator from the nozzle boot 102, the operating handle 107 is turned counterclockwise, as in FIG. 2, which effects the counterclockwise turning of the shaft to which the handle 107 and clutch disc member 141 are pinned. Such counterclockwise movement of the handle 107 moves its wing portion 116 to close off the open end of the nozzle boot 102.

The effective forces of the spring 133 moves the

clutch disc members

141 and 150 into mating engagement with each other. Such mating engagement of the

clutch members

141 and 150 provides the torque to rotate the shaft 147 counterclockwise, which, through the pin and universal linkage 172 engaged in the slotted end of a shaft of the computer, effects the turning of the computer to on position.

The recess 157 at the rearward side of the clutch disc member 150 provides lost motion for the purpose of delaying the effecting of the closing of the motor switch 110 until the computer is in the on position, and then the end of the recess 157 picks up the drive lug 156 of the cam 153, which is in floating engagement on the shaft 147, and drives the cam 153 in a counterclockwise direction. The follower 130, which is attached to the switch shaft 181, rides along the large diameter of the cam 153 as it moves counterclockwise, and, due to the effective forces ofthe spring 185, the follower and switch shaft 181 are moved downwardly when the cam 153 has rotated to its smaller diameter. The downward movement of the follower 180 moves the switch shaft 131 downwardly, allowing the switch plunger 186 to ride down the inclined surface 187 on the switch shaft 181 to permit the switch plunger 186 to move to its ON position, to activate the pump electric motor.

The turning of the motor switch operating handle 107 clockwise from its ON position to its OFF position effects the same cyclic operation as that heretofore described with reference to the motor switch operating handle 7 of the form of my invention shown in FIGS. 1 to 5, inclusive, except that such clockwise movement of the motor switch operating handle '7 causes the clutch member 141, shaft 125, and handle 107 to be moved outwardly as a unit to effect disengagement of the clutch member 141 from its mating clutch member 150. The clockwise movement of the operating handle 107 moves the wing portion 116 thereof away from the outer opening of the nozzle boot 102, and permits the operator to insert the nozzle portion 105 of the dispensing nozzle 106 into the nozzle boot 102, with the handle portion 111 of the dispensing nozzle 106 positioned on the support 112.

I do not desire to limit myself to the specific details of the construction and arrangement as herein set forth, as it is obvious that various modifications may be made therein without departing from the essential features of my invention, as defined in the appended claims.

I claim:

1. In fluid dispensing apparatus which includes an outer housing, a nozzle boot, having an outer opening, in the upper portion of said housing, a meter, conduit means connected to the outlet of said meter, a hose connected to said conduit means, a manually operative valve controlled dispensing nozzle connected to the distal end of said hose, a computer' mechanism operatively connected to the output shaft of said meter, means to reset visual indicating means of said computer mechanism to zero indication, and an electric motor driven pump means adapted to deliver fiuid from a supply source to the inlet of said meter; the improvement in pump operating mechanism for effecting the turning on and off of said pump electric motor comprising:

(a) an electric switch operatively connected by wiring to a source of supply of-electric current and to said electric motor driven pump means;

(b) a motor switch operating handle positioned eX- teriorly of said housing, said motor switch operating handle being rigidly connected to the outward end of a first shaft which extends inwardly from said motor switch operating handle into said housing;

(c) a first clutch disc member mounted axially slideable on the inward end of said first shaft, the means for permitting said rst clutch disc member to be slideable on said first shaft also effects a rotation of said clutch disc member which is coincident with the rotation of said first shaft;

(d) a second shaft operatively connected at its inward end by connection means to a shaft of said cornputer mechanism to effect the turning on of said computer' mechanism;

(e) a second clutch disc member mating with said first clutch disc member, rigidly mounted on the outward end of said second shaft;

(f) a cam oatingly mounted on said second shaft, said cam being provided with a drive lug by which said cam is rotated by rotation of said second ciutch disc member on said second shaft, said cam having peripheral face portions of greater and lesser diameter;

(g) a follower means, with a switch shaft connected thereto, in engaging contact by spring means with said faces of said cam, the end of said switch shaft opposite the end thereof connected to said follower being in engagement with means to effect the opening and closing of said motor switch.

2. In liquid dispensing apparatus which includes an outer housing, a nozzle boot, having an outer opening, in the upper portion of said housing, a meter, conduit means connected to the outlet of said meter, a hose connected to said conduit means, a manually operative valve controlled dispensing nozzle connected to the distal end of said hose, a computer mechanism operatively cont nected to the output shaft of said meter, means to reset visual indicating means of said computer mechanism to zero indication, and an electric motor driven pump means adapted to deliver fluid from a supply source to the inlet of said meter; the improvement in pump operating mechanism for effecting the turning on and off of said pump electric motor comprising:

(a) an electric switch operatively connected by wiring to a source of supply of eiectric current and'to said electric motor driven pump means;

(b) a motor switch operating handie positioned eX- teriorly of said housing, said motor switch operating handie being rigidly connected to the outward end of a' rst shaft which extends inwardly from' said motor switch operating handle through an opening in a plate member aiiixed to said housing and an opening in said housing into said housing;

(c) a first ciutch disc member mounted axially slideable on the-inward end of said iirst shaft, the means for permitting said rst clutch disc member to 'be slideabie on said irst shaft also eifects a rotation of said clutch disc member which is coincident with the rotation of said first shaft;

(d) a spring surrounding said first shaft, one end of said spring being in engagement with the inner side of said plate member and the inner end of said spring beingin engagement with the outer portion of said first clutch disc member;

(e) a second shaft operatively connected at its inward end ,by connection means to a shaft of said computer mechanism to etect the turning on of said computer mechanism;

(f) a second ciutch disc member mating with said irst ciutch disc member, rigidly mounted on the outward end of said second shaft;

(g) a cam oatingly mounted on said second shaft, said cam being provided with a drive iug by which said cam is rotated by rotation of said second clutch disc member on said second shaft, said cam having peripheral face portions of greater and lesser diameter;

(h) a follower means, with a switch shaft connected thereto, in engaging contact by spring means with said faces of said cam, the end of said switch shaft opposite the end thereof connected tov said follower i@ ybeing in engagement with means to edect the opening and closing of said motor switch.

3. in gasoline dispensing apparatus which includes an outer housing, a nozzle boot, having an outer opening, in the upper portion of said housing, a meter, conduit means connected to the outlet of said meter, a hose connected to said conduit means, a manually operative valve controlled dispensing nozzle connected to the distal end of said hose, a computer mechanism operatively connected to the output shaft of said meter, means to reset visuai indicating means of said computer mechanism to zero indication, and an electric motor driven pump means adapted to deliver fiuid from a supply source to the inlet of said meter; the improvement in pump operating mechanism for effecting the turning on and off of said pump electric motor comprising:

(a) an electric switch operatively connected by wiring to a source of supply of electric current and to said electric motor driven pump means;

(b) :a plate member aixed to said housing;

(c) a motor switch operating handle positioned eX- teriorly of said housing, said motor switch operating 1handle be'mg rigidly connected to the outward end of a -iirst shaft which extends inwardly from said motor switch operating handle through matching openings in said plate member and housing into said housing;

(d) a irst clutch disc member mounted axially slideable on the inward end of saidrfirst shaft, the means for permitting said first clutch disc member .to be siideable on said rst shaft also effects a rotation of said clutch disc member which is coincident with the rotation of said first shaft;

(e) a spring surrounding said rst shaft, one end of said spring being in engagement with the inner side ofsaid plate member and the inner end of saidspring being in engagement with the outer portion of said iirst clutch disc member;

(f) a second shaft operatively connected at its inward end Iby connection means to a shaft of said computer mechanism to efect the turning on of said computer mechanism;

(g) a second clutch disc member mating with said first clutch disc member, rigidly mounted on the outward end of said second shaft;

(It) each ofthe mating faces of said first and second ciutch disc members having both an angled clutch face portion and a square clutch face portion;

(i) acarn fioatingly mounted on said second shaft, said cam being provided with-a drive lug by which said cam is rotated by rotation of said second clutch disc member on said second shaft, said cam yhaving peri-pheral face portions of greater and lesser diameter;

(j) a follower means, with a switch shaft connected thereto, in engaging contact yby spring means with said faces of said cam, the end of said switch shaft opposite the end thereof connected to said follower being in engagement with means to effect'the opening and closing of :said motor switch.

4. A structure as in claim 2; wherein said second clutch disc 4member is provided at its inward side with a recess portion; and the outward side of said cam is provided with a drive lug adapted to engage the side wall of said recess; whereby lost motion is provi-ded for the delay of the operation of said electric switch until said computer mechanism is in the on position, whereupon theend wall of said recess picks up said drive lug on said cam and drives said cam by the continued rotational movement of said second clutch disc member.

5. A structure as in claim 3; wherein said second clutch disc member is provided at its inward side with a recess portion; and the outward side of said cam is provided with a drive lug adapted to engage the side wall of said recess; whereby, lost motionl is provided for the delay of l l the operation of said electric switch until said computer mechanism is in the on position, whereupon the end wall of ksaid recess picks up said drive lug on said cam and drives said cam by the continued rotational movement of said second clutch disc member.

6. A structure as in claim 2; wherein the back portion of said motor switch operating handle is provided with a recess, and the outer side of said plate member is provided with an outward projecting stop pin adapted to be engaged in said recess; whereby, continued counterclockwise movement of the motor switch operating handle is prevented by said stop pin coming into engaging abutment with the wall of said recess to prevent dam-age to the computer mechanism if the said visual indicating means of said computermechanism has not been reset to zero.

7. A structure as in claim 3; wherein the back portion of said motor switch operating handle is provided with a recess, and the outer side of said plate member is provided with an outward projecting stop pin adapted to be engaged in said recess; whereby, continued counterclockwise movement of the motor switch operating handle is prevented by said stop pin coming into engaging abutment with the wall of said recess to prevent damage to the computer mechanism if the said Visual indicating means of said computer mechanism has not been reset to zero.

8. A structure as in claim 2; wherein said rst shaft and said second shaft are provided with means to pilot said shafts together to maintain said rst shaft and said second shaft in axial alignment. v

9. A structure as in claim 3; wherein said first shaft and said second shaft are provided with means to pilot said shafts together to maintain said first shaft and said second shaft in axial alignment.

10. A structure as in claim 2; wherein said second clutch disc member is provided at its inward side with a recess portion; and the outward side of said cam is provided with a drive lug yadapted to engage the side wall of said recess; whereby, lost motion is provided for the delay of the operation of said electric switch until said computer mechanism is in the on position, whereupon the end wall of said recess picks up said drive lug on said cam and drives said cam by the continued rotational movement of said second clutch disc member; and wherein the back portion of said motor switch operating handie is provided a recess, and the outer side of said plate member is provided with an outward projecting stop pin adapted to be engaged in said recess; whereby, continued counterclockwise movement of the motor switch operating handle is prevented by said stop pin coming into engaging abutment with the wall of said recess to prevent damage to the computer mechanism if the said visual indicating means of said computer mechanism has not been reset to zero.

l1. A structure as in claim 3; wherein said second clutch disc member is provided at its inward side With a recess portion; and the outward side of said cam is provided with a drive lug adapted to engage the side wall of said recess; whereby, lost motion is provided for the delay of the operation of said electric switch until said computer mechanism is in the on position whereupon the end wall of said recess picks up said drive lug on said cam and drives said cam by the continued rotational movement of said second clutch disc member; and wherein the back portion of said motor switch operating handle is provided with a recess, and the outer side of said plate member is provided with an outward projecting stop pin adapted to be engaged in said recess; whereby, continued counterclockwise movement of the motor switch operating handle is prevented by said stop pin coming into engagement abutment with the wall of said recess to prevent damage to the computer mechanism if the said i2 visual indicating means ofV said computer mechanism has not been reset to zero.

l2. In gasoline dispensing apparatus which includes an outer housing, a nozzle boot, having an outer opening, in the upper portion of said housing, a meter, conduit means connected to the outlet of said meter, a hose connected to said conduit means, a manually operative valve controlled dispensing nozzle connected to the distal end of said house, a computer mechanism operatively connected to the output shaft of said meter, means to reset visual indicating means of said computer mechanism to zero indication, and an electric motor driven pump means adapted to deliver gasoline from a supply source to the inlet of said meter; the improvement in pump operating mechanism for effecting the turning on and o of said pump electric motor comprising:

(b) a plate member affixed to said housing;

(c) a motor switch operating handle positioned exteriorly of said housing, said motor switch operating handle being rigidly connected to the outward end of a first shaft which extends inwardly from said motor switch operating handle through matching openings in said plate member land said housing into said housing;

(d) a rst clutch disc member rigidly mounted on the inward end of said iirst shaft;

(e) a spring surrounding said rst shaft, one end of said spring being in engagement with the inner side of said plate member and the inner end of said spring being in engagement with the outer portion of said iirst clutch disc member;

(f) a second shaft operatively connected at it inward end by connection means to a shaft of said computer mechanism to effect the turning on of said computer mechanism;

(g) a second clutch disc member mating with said zfirst clutch disc member, rigidly mounted on the outward end of said second shaft;

(lz) each of the mating faces of said first and second clutch disc members having both an angled clutch face portion and a square clutch face portion;

ti) a cam oatingly mounted on said second shaft, said cam being provided with a drive lug by which lsaid cam is rotated by rotation of said second clutch disc member on said second shaft, said cam having peripheral face portions of greater and lesser diameter;

(j) a follower means, with a switch shaft connected thereto, in engaging contact by spring means with said faces of said cam, the end of said switch shaft opposite the end thereof connected to said follower being in engagement with means to effect the opening and closing of said motor switch;

(k) whereby, when said motor switch operating handle is rotated to effect closure of said electric switch, said motor switch operating handle, said rst shaft and said first clutch disc member are moved inwardly as a unit to effect mating engagement of said first clutch disc member lwith said second clutch disc member; and when said motor switch operating handle is rotated in the opposite direction to effect the opening of said electric switch, said first clutch disc member, said first shaft, and said motor switch operating handle are moved outwardly as a unit to effect the disengagement of said first clutch disc member from said second clutch disc member.

13. A structure as in claim l2; wherein said second clutch disc member is provided at its inward side with a recess portion; and the outward side of said cam is provided with a drive lug adapted to engage the side wall of said recess; whereby, lots motion is provided for the delay of the operation of said electric switch until said computer mechanism is in the on position, whereupon the end wall of said recess picks up said drive lug on said cam and drives said cam by the continued rotational movement of said second clutch disc member.

14. A structure as in claim 12; wherein the back portion of said motor switch operating handle is provided with a recess, and the outer side of said plate member is provided with an outward projecting stop pin adapted to be engaged in said recess; whereby continued counterclockwise movement of the motor switch operating handle is prevented by said stop pin coming into engaging abutment with the Wall of said recess to prevent damage to the computer mechanism if the said visual indicating means of said computer mechanism has not been reset to zero.

15. A structure as in claim l2; wherein said first shaft and said second shaft are provided with means to pilot said shafts together to maintain said first shaft and said second shaft in axial alignment.

No references cited.

LOUIS I. DEMBO, Primary Examiner.

UNITED STATES PA'ILEINIIv OFFICE CERTIFICATE oF CORRECTION Patent No. 3,178,057 Aril 13, 1965"v Lowell F. Nelson It s hereby certified that error appears in the above numbered paten'fl reqlrng correction and that the said Letters Patent should read as oorrecteibelow.

Column 3, "line 8, for "incomplete" u,read complete :olumn 6, line 66, for "members" read -e member n; column l2, line 9,' for "house" read hose line 75, for "lot-"- Signed and lsealed A*Chis 14th day of September` 1965.

SEAL) test:

RNEST W. SWIDER EDWARD J. BRENNER testing Officer v Commissioner of Patents

Claims

1. IN FLUID DISPENSING APPARATUS WHICH INCLUDES AN OUTER HOUSING, A NOZZLE BOOT, HAVING AN OUTER OPENING, IN THE UPPER PORTION OF SAID HOUSING, A METER, CONDUIT MEANS CONNECTED TO THE OUTLET OF SAID METER, A HOSE CONNECTED TO SAID CONDUIT MEANS, A MANUALLY OPERATIVE VALVE CONTROLLED DISPENSING NOZZLE CONNECTED TO THE DISTAL END OF SAID HOSE, A COMPUTER MECHANISM OPERATIVELY CONNECTED TO THE OUTPUT SHAFT OF SAID METER, MEANS TO RESET VISUAL INDICATING MEANS OF SAID COMPUTER MECHANISM TO ZERO INDICATION, AND AN ELECTRIC MOTOR DRIVEN PUMP MEANS ADAPTED TO DELIVER FLUID FROM A SUPPLY SOURCE TO THE INLET OF SAID METER; THE IMPROVEMENT IN PUMP OPERATING MECHANISM FOR EFFECTING THE TURNING "ON" AND "OFF" OF SAID PUMP ELECTRIC MOTOR COMPRISING: (A) AN ELECTRIC SWITCH OPERATIVELY CONNECTED BY WIRING TO A SOURCE OF SUPPLY OF ELECTRIC CURRENT AND TO SAID ELECTRIC MOTOR DRIVEN PUMP MEANS; (B) A MOTOR SWITCH OPERATING HANDLE POSITIONED EXTERIORLY OF SAID HOUSING, SAID MOTOR SWITCH OPERATING HANDLE BEING RIGIDLY CONNECTED TO THE OUTWARD END OF A FIRST SHAFT WHICH EXTENDS INWARDLY FROM SAID MOTOR SWITCH OPERATING HANDLE INTO SAID HOUSING; (C) A FIRST CLUTCH DISC MEMBER MOUNTED AXIALLY SLIDEABLE ON THE INWARD END OF SAID FIRST SHAFT, THE MEANS FOR PERMITTING SAID FIRST CLUTCH DISC MEMBER TO BE SLIDEABLE ON SAID FIRST SHAFT ALSO EFFECTS A ROTATION OF SAID CLUTCH DISC MEMBER WHICH IS COINCIDENT WITH THE ROTATION OF SAID FIRST SHAFT; (D) A SECOND SHAFT OPERATIVELY CONNECTED AT ITS INWARD END BY CONNECTION MEANS TO A SHAFT OF SAID COMPUTER MECHANISM TO EFFECT THE TURNING ON OF SAID COMPUTER MECHANISM; (E) A SECOND CLUTCH DISC MEMBER MATING WITH SAID FIRST CLUTCH DISC MEMBER, RIGIDLY MOUNTED ON THE OUTWARD END OF SAID SECOND SHAFT; (F) A CAM FLOATINGLY MOUNTED ON SAID SECOND SHAFT, SAID CAM BEING PROVIDED WITH A DRIVE LUG BY WHICH SAID CAM IS ROTATED BY ROTATION OF SAID SECOND CLUTCH DISC MEMBER ON SAID SECOND SHAFT, SAID CAM HAVING PERIPHERAL FACE PORTIONS OF GREATER AND LESSER DIAMETER; (G) A FOLLOWER MEANS, WITH A SWITCH SHAFT CONNECTED THERETO, IN ENGAGING CONTACT BY SPRING MEANS WITH SAID FACES OF SAID CAM, THE END OF SAID SWITCH SHAFT OPPOSITE THE END THEREOF CONNECTED TO SAID FOLLOWER BEING IN ENGAGEMENT WITH MEANS TO EFFECT THE OPENING AND CLOSING OF SAID MOTOR SWITCH.