US3840151A - Liquid fuel dispensing pump - Google Patents

Liquid fuel dispensing pump Download PDF

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Publication number
US3840151A
US3840151A US00351756A US35175673A US3840151A US 3840151 A US3840151 A US 3840151A US 00351756 A US00351756 A US 00351756A US 35175673 A US35175673 A US 35175673A US 3840151 A US3840151 A US 3840151A
Authority
US
United States
Prior art keywords
reset
shaft
switch
pump
interlock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00351756A
Other languages
English (en)
Inventor
R Jarvis
J Croxford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WLTD Ltd
Original Assignee
Dresser Europe SPRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dresser Europe SPRL filed Critical Dresser Europe SPRL
Application granted granted Critical
Publication of US3840151A publication Critical patent/US3840151A/en
Assigned to DRESSER U.K. LIMITED reassignment DRESSER U.K. LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER EUROPE S.A., A COMPANY OF BELGIUM
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
    • B67D7/22—Arrangements of indicators or registers
    • B67D7/26—Arrangements of indicators or registers with resetting or zeroing means
    • B67D7/263—Arrangements of indicators or registers with resetting or zeroing means using electrical or electro-mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/74—Devices for mixing two or more different liquids to be transferred
    • B67D7/741—Devices for mixing two or more different liquids to be transferred mechanically operated
    • B67D7/742—Devices for mixing two or more different liquids to be transferred mechanically operated involving mechanical counters, e.g. of clock-work type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/74—Devices for mixing two or more different liquids to be transferred
    • B67D2007/745—Devices for mixing two or more different liquids to be transferred for obtaining fuel of a given octane level
    • B67D2007/746—Devices for mixing two or more different liquids to be transferred for obtaining fuel of a given octane level by mixing different fuel grades or fuel and oil

Definitions

  • a reset Apr 17 1972 Great Britain ..17742 motor is coupled to reset the drums to zero and then switch on the main pump motor at the beginning of a [52] U.S. Cl. 222/33, 222/75 dispensing cycle.
  • the reset motor is also coupled to [51] Int. Cl....'. 367d 5/20 drive the interlock shaft and is switched on by move- [58] Field of Search 222/74, 75, 26, 33, 35, ment of an actuator in response to or allowed by re- 222/129 rnoval of the dispensing nozzle from the pump housmg.
  • the invention relates to a fuel dispensing pump which blends two base grades of liquid fuel usually petrol in adjustable predetermined proportions and delivers a mixture of desired octane rating.
  • Such pumps have a computer which computes and totalises the value of the fuel as it is dispensed.
  • Price and volume indicating drums are controlled by the computer.
  • an electric reset motor which is switched on at the beginning of each dispensing operation and is effective to reset the indicator drums to zero and then close a switch which allows a circuit for the pump motors to be completed.
  • a reset switch operates the reset motor.
  • a fuel dispensing pump of the kind referred to.
  • the reset switch is operated by turning of a reset shaft.
  • the reset shaft is turned by turning of an interlock shaft which is turned by a manual on/off switch.
  • the interlock shaft is interlocked with the blend selector mechanism so that it is turned by the on/off switch only if an appropriate blend selection has been made.
  • the interlock shaft in such a pump is also effective by a mechanical coupling to switch on the computer.
  • One method is to use the action of removal of the pump nozzle from its housing and/or replacement of the pump nozzle in its housing to effect the function of the on/off switch.
  • the force required to switch the computer on and off is such that the weight of the nozzle, or the strength of a spring able to be stressed by the weight of the nozzle, is inadequate.
  • the present invention seeks to provide a solution to this problem.
  • a fuel dispensing pump of the kind referred to has a nozzle normally housed in a nozzle housing; an actuator in the housing which is depressed by the action of pushing the nozzle home in the housing; an interlock shaft coupled to the computer to switch the computer on and off when turned; a mechanical linkage coupling the actuator with the reset switch so that movement of the actuator allowed by removal of the nozzle from the housing switches on the reset switch; and coupling means between the reset motor and the interlock shaft whereby the interlock shaft is turned by the reset motor to switch on the computer.
  • the arrangement does not require additional electric or hydraulic motors to turn the interlock shaft, use being made of available capacity of the reset motor itself.
  • the coupling means comprises a cam mounted to be turned by the reset motor, a lever having a cam follower which co-operates with the cam, a spring which urges the lever to press the cam follower on the cam and a crank on the interlock shaft, the end of the lever remote from the cam follower being arranged to engage the crank.
  • a latch is provided to hold the lever against the spring when the interlock shaft has been turned thereby to the on position and the actuator is coupled to release the latch when the nozzle is replaced.
  • the actuator is coupled to the normally provided reset shaft which, however, is not directly coupled to the interlock shaft.
  • the latch may be released by co-operation with a crank on the reset shaft.
  • an interlock is provided between the reset shaft and the blend selector so as to prevent rotation of the reset shaft unless the blend selection has been made properly.
  • This interlock may be electromechanical, with a switch and lockingsolenoid. Preferably, however, the interlock is mechanical.
  • FIG. 1 is a perspective view of a fuel dispensing pump in accordance with the invention
  • FIG. 2 is an end elevation of the mechanism of the pump of FIG. 1 associated with the actuator;
  • FIG. 3 is a schematic diagram illustrating the interrelationship of the components of the pump of FIGS. 1 and 2;
  • FIG. 4 is a diagram illusrating the means for turning the interlock lever of FIG. 3.
  • the pump is a blending petrol pump having a housing 1.with a boot 40 at the side which accommodates the dispensing nozzle 2.
  • a display comprising a set of rotatable volume drums 41 which is driven to indicate the volume of fuel dispensed and a set of price drums 42 which is driven to indicate the cost of the fuel dispensed.
  • a blend selector knob 43 is provided for selection of the blend, or grade, of fuel required. In accordance with the selection made, two base grades of fuel are mixed in appropriate proportions as dispensing takes place.
  • FIG. 2 shows the actuator mechanism.
  • the actuator is coupled at 4 to a link 6 the other end of which is pivotally coupled at 7 to a control plate 8.
  • the pump has a reset shaft 9 and the plate 8 is fixed thereto so that the plate is rotatable about the axis of shaft 9.
  • a spring 5 couples the plate 8 to a fixed point on the housing and is the effective to urge actuator 3 outwardly.
  • the blend selector knob 43 is coupled to a blend selector cam 10 and a cam follower roller 11 co-operates therewith.
  • the roller 11 is mounted on a lever 12 which is pivoted at 13 and urged in an anti-clockwise direction by a spring 14.
  • the spring thus urges the cam follower 11 into contact with the cam and the arrangement is effectively a strong indexing mechanism. If the blend selector knob is in a position appropriate to an obtainable blend then the lever 12 is in itsupper-most position as shown. On the other hand, if the blend selector knob is left in an intermediate position then the arm 12 will be urged downwardly by one of the cam projections.
  • leg 15 which carries an interlock plate 16.
  • Plate 16 is forked at its upper end to be guided by shaft 9 and has an L-shaped slot 17 which accommodates a peg l8 projecting from the control plate 8. If a blend has been properly selected and plate 16 is in its upper-most position then the slot 17 presents no obstruction to movement of peg 18 to the right when the nozzle 2 is removed.
  • interlock plate 16 is forked at its upper end to be guided by shaft 9 and has an L-shaped slot 17 which accommodates a peg l8 projecting from the control plate 8. If a blend has been properly selected and plate 16 is in its upper-most position then the slot 17 presents no obstruction to movement of peg 18 to the right when the nozzle 2 is removed.
  • the reset shaft 9 has at its end a crank 44 which, when the shaft is turned by the actuator 3, operates a reset switch 45.
  • gear-wheel 48 is another gear wheel 20 which drives a shaft 49 which resets to zero drums 41 and 42 in the display shown generally at 50.
  • the reset motor turns gear wheel 20 half a revolution and then actuates a switch 51 which allows the main pump motor to be energised.
  • switch 51 actuates an electric clutch 47 in the drive between the reset motor and the gear wheel 48. Actuation of the clutch disengaged the gear wheel 48 from the motor and shaft 44 therefore the gear wheels 48 and 20 and the shaft 49 stop turning while the reset motor continues to run.
  • the display drums 41 and 42 are driven by a mechanical computer 52 which is driven by fuel meters in the two fuel supply lines.
  • the computer is set to adjust the proportion of the base grades and the price displayed by a linkage from a shaft 53 on which the blend selector cam is fixed.
  • the computer 52 is switched on by rotation of an interlock shaft 27. In a manner to be described with reference to FIG. 4 the interlock shaft 27 is turned by the reset motor.
  • the modification made to the reset motor is to screw to the face of gear wheel 20 a cam 21.
  • the cam 21 cooperates with a cam follower roller 22 mounted on a lever 23 which is free to turn on shaft 9.
  • the other end of the lever 23 is forked at 24 and co-operates with a peg 25 on a crank 26.
  • the crank 26 is fixed on the interlock shaft 27 of the pump. When the crank 26 is in its left limit position as shown then the computer is switched on.
  • the lever 23 is urged anti-clockwise by a spring 28 so that the roller 22 is urged into contact with cam 21 and a force is provided from the spring 28 to urge the shaft 27 into the of position. This tendency is prevented by a latch arrangement when the computer has been switched on.
  • the latch arrangement comprises a latch lever 29 which is urged to rotate clockwise by a spring 30.
  • the lever is pivoted at 31.
  • a roller 32 is fixed on lever 23 and is free to rotate.
  • As lever 23 is turned clockwise by movement of the reset motor the roller 32 rolls up a surface 29a of the arm 29 until it lodges as shown in a detent 33. This latches the lever 23 in the on position shown.
  • the reset shaft is turned anti-clockwise (as seen in FIG. 4) and a crank 34 which is fixed to the reset shaft rotates with it and co-operates with a branch 29b of arm 29 to move the arm anti-clockwise and thus release the latch.
  • a further interlock is provided to supplement the action of peg 18 in slot 17 in preventing re-selection of the fuel grade during a dispensing operation.
  • This further interlock comprises a wheel 55 fixed on the blend selector shaft 53 and having a number of parallel pins 56 projecting therefrom.
  • An interlock pawl 57 is pivoted at 58 and is urged in the anti-clockwise direction by a spring 59.
  • the above described embodiment of the invention makes use of the fact that the reset motor has power to spare during its cycle of operation. This is because the first and last parts of the reset cycle completed by the motor are used to disengage and re-engage indicator drums, and switch on the pump motors. This requires a large effort. During the middle portion of the reset cycle the indicator drums require little power to turn them. It is during this part of the reset cycle that the rotation of the reset motor is used to turn the interlock shaft.
  • the cam 21 is shaped appropriately to achieve this function, the cam surface being circular at the beginning and end of each portion so that when the roller 22 is in engagement therewith the resistance to motion is small. Between these portions the cam shape is such as to move the roller radially.
  • the invention is not restricted to the details of the foregoing description made with reference to the drawings.
  • the spring 5 is simply removed, the remainder of the mechanism being unchanged.
  • the actuator 3 will not automatically move to switch the pump motors on it will be pulled by hand to do so.
  • the advantages remain that the switching effort required is small and switching off is effected, as before, by pushing the actuator with the pump nozzle in a single operation as the nozzle is replaced.
  • a liquid fuel dispensing pump of the blending kind which blends two base grades of liquid fuel, the pump comprising: a computer which computes and totalizes the value of fuel as it is dispensed; price and volume indicating drums controlled by the computer; an electric reset motor coupled to reset, when energised, the indicating drums to zero; a reset switch for energising the reset motor; a housing for the pump; a nozzle normally housed in the pump housing; an actuator in the housing which is depressed by the action of pushing the nozzle home in the housing; an interlock shaft coupled to the computer to switch the computer on and off when turned; a mechanical linkage coupling the actuator with the reset switch so that movement of the actuator allowed by removal of the nozzle from the housing switches on the reset switch; and coupling means between the reset motor and the interlock shaft whereby the interlock shaft is turned by the reset motor to switch on the computer, said coupling means comprises a cam mounted to be tumed by the reset motor; a
  • lever having a cam follower which co-operates with the cam; a spring which urges the lever to press the cam follower on the cam and a crank on the interlock shaft, the end of the lever remote from the cam follower being arranged to engage the crank.
  • a liquid fuel dispensing pump as claimed in claim 1 wherein there is provided a latch to hold the lever against the spring when the interlock shaft has been turned thereby to the on position and means coupling the actuator is to release the latch when the nozzle is replaced.
  • a liquid fuel dispensing pump as claimed in claim 2 wherein the actuator is coupled to a reset shaft and the reset shaft is coupled to the reset switch and also to the latch to release the latch when the nozzle is replaced.
  • a liquid fuel dispensing pump as claimed in claim 4 wherein the interlock comprises a first plate fixed on the reset shaft, which plate has a peg therein and a link carrying a second plate, the second plate having an L- shaped slot therein in which the peg rides the link being coupled to a detent wheel which raises and lowers the slot with respect to the peg as the blend selector is moved from one grade position to the next, the first plate and thus the reset shaft being prevented from turning when the second plate is raised, namely when the blend selector is between grade positions and the second plate being prevented from being raised by cooperation with the peg when the first plate has been turned to switch the reset switch on.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
US00351756A 1972-04-17 1973-04-16 Liquid fuel dispensing pump Expired - Lifetime US3840151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1774272A GB1402911A (en) 1972-04-17 1972-04-17 Liquid fuel dispensing pump

Publications (1)

Publication Number Publication Date
US3840151A true US3840151A (en) 1974-10-08

Family

ID=10100444

Family Applications (1)

Application Number Title Priority Date Filing Date
US00351756A Expired - Lifetime US3840151A (en) 1972-04-17 1973-04-16 Liquid fuel dispensing pump

Country Status (6)

Country Link
US (1) US3840151A (enExample)
CA (1) CA986892A (enExample)
DK (1) DK137292B (enExample)
GB (1) GB1402911A (enExample)
NO (1) NO140134C (enExample)
SE (1) SE389855B (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951307A (en) * 1973-07-11 1976-04-20 Kienzle Apparate Gmbh Timing of the control and resetting motor in a fuel dispensing arrangement
USD287600S (en) 1984-07-23 1987-01-06 Dresser Industries, Inc. Nozzle receptacle for fuel dispenser

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2390136A (en) * 1939-04-18 1945-12-04 Richard R Trexler Liquid dispensing apparatus
US2996221A (en) * 1957-05-28 1961-08-15 Gilbert & Barker Mfg Co Dispensing apparatus for blended liquids
US3045868A (en) * 1959-09-09 1962-07-24 Tokheim Corp Single lever dispenser control apparatus
US3484021A (en) * 1967-12-15 1969-12-16 Veeder Industries Inc Fluid dispensing apparatus with cost and volume registers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2390136A (en) * 1939-04-18 1945-12-04 Richard R Trexler Liquid dispensing apparatus
US2996221A (en) * 1957-05-28 1961-08-15 Gilbert & Barker Mfg Co Dispensing apparatus for blended liquids
US3045868A (en) * 1959-09-09 1962-07-24 Tokheim Corp Single lever dispenser control apparatus
US3484021A (en) * 1967-12-15 1969-12-16 Veeder Industries Inc Fluid dispensing apparatus with cost and volume registers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951307A (en) * 1973-07-11 1976-04-20 Kienzle Apparate Gmbh Timing of the control and resetting motor in a fuel dispensing arrangement
USD287600S (en) 1984-07-23 1987-01-06 Dresser Industries, Inc. Nozzle receptacle for fuel dispenser

Also Published As

Publication number Publication date
NO140134B (no) 1979-04-02
NO140134C (no) 1979-07-11
SE389855B (sv) 1976-11-22
GB1402911A (en) 1975-08-13
CA986892A (en) 1976-04-06
DK137292C (enExample) 1978-07-17
DK137292B (da) 1978-02-13

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DRESSER U.K. LIMITED, 197 KNIGHTSBRIDGE, LONDON SW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DRESSER EUROPE S.A., A COMPANY OF BELGIUM;REEL/FRAME:004564/0572

Effective date: 19860216