US2024320A - Filling station pump - Google Patents

Description

Dec. 17, 1935.

c; WALKER v 2,024,320

FILLING STATION PUMP Filed Nov. 22, 1954 2 Sheets-Sheet l Jill/1 Dec. 17, 1935. Q WALKER 2,024,320

FILLING STATION l UMP Filed Nov. 22, 1934 2 Sheets-Sheet 2 Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE 7 Claims.

My invention consists in new and useful improvements in a selective control mechanism for use in connection with liquid dispensers or pumps of the type commonly used at motor fuel filling stations, and has for its object to provide a mechanism of this character which is simple in construction, economical to manufacture and convenient to operate.

Another object of my invention is to provide a selective control mechanism which is both positive and accurate in controlling the operation of a fluid dispensing pump, and one which can be installed in connection with various types of pumps.

With the above and other objects in view which will appear as the description proceeds, my invention consists in the novel features herein set forth, illustrated in the accompanying drawings and more particularly pointed out in the appended claims.

Referring to the drawings in which numerals of like character designate similar parts throughout the several views,

Fig. 1 is a front view of one form of my invention applied to a motor-driven filling station pump or the like, certain parts being shown broken away and in section to illustrate the details of construction.

Fig. 2 is asectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a sectional view taken on line 33 of Fig. 1.

Fig. 4 is a view similar to Fig. 2 showing the invention applied to a manually operated device.

Fig. 5 is a fragmentary section taken on line 5-5 of Fig. 4.

Fig. 6 is a front view of a still further modification of my invention applied to a manually operated pump.

40 Fig. 7 is a sectional view taken on line '|1 of Fig. 6, and

Fig. 8 is a fragmentary detail showing the means for returning the selective pins to normal position.

v In the drawings, referring to Figs. 1 to 3 which 5 hes 6 arran ed an annu ar row adj ent ts periphery, said openings being adapted to receive a corresponding series of pins 1, each of which is provided with a head or knob 8 at its outer end. These pins are preferably rounded at their inner ends, and adjacent said rounded ends are provided peripheral grooves 9 and Ill adapted to cooperate with a spring clip I l in each of the openings 6 to retain the pins 1 in either one of two positions as hereinafter set forth more in detail.

.The rear portion of the disc 3 is provided with 10 a series of peripheral teeth I2 adapted to mesh with a gear l3 carried by a shaft M in the lower wall of the housing 2, the inner end of said shaft l4 carrying a driving disc l5. which, through the medium of a connecting rod l6 eccentrically 15 mounted on the disc at one end, is adapted to operate a fluid dispensing pump, not shown.

An electric motor I! secured in any suitable manner to the housing 2 or supporting member 1, drives a gear it which is arranged to mesh =v with the gear l3, whereby upon the operation of the motor, the gear l8 drives the gear l3 and shaft l4, and through disc l5 and connecting rod it, operates the pump. It will be apparent from the relation of gear l3 with the gear teeth l2 in 25 disc 3 that upon the operation of the motor and pump. the disc 3 will also be rotated a degree proportionate to the number of rotations of the motor, and dependent upon the gearing ratio.

Inside'the housing 2, the face of the support I carries an annular ring l9, best seen in Fig. 3, in line for engagement by the inner ends of the pins '1, said ring and pins being suitably connected in electric circuit with the motor I1 and a source of current, whereby when any one of said pins engages the front face of the ring l9, said circuit is closed to energize the motor.

The outer face 20 of the housing 2 is providedwith a series of numerals or other indicia corresponding in number to the pins 7 in the disc 3, and in the form shown in Figs. 1 to 3, arranged in counterclockwise direction as shown in Fig. l. The ring I9 at a point preferably adjacent the zero mark on the front face of the housing is recessed as at 2 I, which recess merges into an outward projection or lug 22 at its posterior terminus, whereby when a selected pin reaches the recess 2 l, the circuit to the motor will be broken.

Adjacent each pin I, the periphery of the disc v 3 is provided with a V-shaped notch 23 adapted 6 to be engaged by a suitable spring clip 24 arranged at a predetermined point on the inner wall of the housing 2 so as to normally prevent overrunning of the disc after a predetermined degree of rotation.

In the operation of this form of my invention, let us assume that five gallons of gasoline are to be dispensed. The head 8 of the pin adjacent the numeral 5 on the outer face of the housing 2 is depressed causing the inner end of the pin to engage the face of the ring I9 to close the electric circuit and energize the motor II, the pin being held in engaging position by the spring clip .I I and groove I 0. The motor rotates in clockwise direction and with it the driving gear I8 which causes the intermediate gear I3 to rotate in counterclockwise direction. The gear I3 through shaft I1, disc I5 and connecting rod I6, operates the pump (not shown), and at the same time, through teeth I2, causes the main disc 3 to rotate in clockwise direction as shown by the arrow in Fig. 1. The motor continues to rotate and drive the pump until the depressed pin reaches the indentation or recess 2I in the ring I9, whereupon the circuit is broken, as before mentioned, and the motor stops. At this point, the spring 24 on the inner face of the housing 2 engages an adjacent notch 23 which causes the disc 3 to remain in this position and prevents overrunning of the disc beyond the recess 2I in the ring I 9.

Now then, when it is desired to vend gasoline to the next customer, the head 8 of the pin adjacent the numeral corresponding to the quantity of gasoline to be dispensed is depressed and the operation just described is repeated. It will be noted, however, that as soon as the disc 3 begins to rotate after the circuit is closed again, the previously depressed pin engages the raised member or lug 22 and is forced back to its normal inoperative position where it is retained by engagement of the spring clip II with the roove 9.

In the form of the invention shown in Figs. 4 and 5, the device is employed in connection with a manually operated mechanism and generally speaking, the construction is substantially the same as that just described. In this form, however, instead of the motor for driving the pump and main disc, I provide a driving shaft 25 which carries at its outer end a handle 26, said shaft passing freely through the main disc 3a and being journa ed at 5a in the supporting member Ia. Adjacent the inner face of the disc 3a and in slightly spaced relation therefrom, I provide a circular clutch plate 21 which is keyed as at 28 to the shaft 25. This clutch plate is provided around its periphery with a series of notches 29 corresponding in number and in spacing to the number of pins la.

The inner ends of the pins 1a are reduced as at 30, the length of the reduced ends being substantially equal to the distance between the clutch plate 21 and the ring I 911, whereby when any one of the pins la is depressed, its inner end will engage the face of the ring I9a with the body of the pin lying in the respective notch 29 in the periphery of the clutch plate 21. With the pins in their outward position, the diameter of the clutch plate 21 is such that its periphery clears the reduced ends 39 of the pins.

Thus, upon the rotation of the handle 25 and in turn the clutch plate 21, if none of the pins are depressed, the main disc 3a and the dispensing pump will remain inoperative. However, upon depressing a predetermined pin, the body of said pin will engage the adjacent notch 29, and as the handle 26 and clutch plate 21 are rotated, said rotation will be transmitted to the main disc 3a, and through gear I3a, shaft Ma, disc I5a and connecting rod I 6a, to the dispensing D p.

As in the case of the motor-driven assembly heretofore described, the ring I9a is provided with 5 a raised portion or lug 22a, whereby when the depressed pin reaches a point adjacent the zero mark on the outer face of the housing 2a, its inner end engages the raised member 22a and is forced outwardly, thus disengaging the body 10 of the pin 1a from the notch 29 in the clutch plate 21 and preventing further operation of the main disc 3a and through it, the pump.

Here again, as in the other structure, peripheral notches are provided in the main disc 3a 15 for engagement by a spring clip to prevent overrunning of the disc 3a. Any suitable means may be provided for limiting the inward and outward movement of the pins Ia in their respective openings 6a and for retaining said pins in 20 one of their two positions.

In the third form of my invention illustrated in Figs. 6 to 8, the manually operated handle 3| is mounted on an ext nsion of shaft Mb, which through gear I3?) and disc I5b, operates the 23 main disc 31) and pump connecting rod lGb, respectively. The main disc 32) is freely rotatable upon a shaft 4b suitably secured within the housing 2b and is rotatable in counterclockwise direction upon the clockwise rotation of the handle 3|. The numerals on the face of the housing 2b are arranged in clockwise direction as will be seen from Fig. 6 instead of the counterclockwise arrangement described in connection with Fig. 1.

In this form of my invention, the extent of rotation of the disc 3b and the pump is controlledv by a stop mechanism generally indicated by the numeral 32 instead of the recessed ring of Fig. 1 or the notched clutch plate in Fig. 4.

This stop mechanism 32 comprises a rocker arm 33 pivoted to the supporting member Ib at 34, one end of said rocker arm terminating in a U-shaped hook member 35 adapted to receive the nozzle 36 of a hose 31, as shown in dotted lines in Fig. 6. The other end of the rocker arm 33 is bent at substantially right angles to form an abutment 38 and carries a normally downwardly depending pivoted arm 39. This arm 39, when the rocker arm 33 is in the full line position shown in Fig. 6', that is, when it is not engaging the nozzle 36, is sufficiently long to lie in line for engagement by a depressed pin 1b as shown in Fig. 7, the abutment 38 lying in a position adjacent the zero mark on the front face of the housing 217.

Thus, upon the counterclockwise rotation of the disc 3b, when a depressed pin reaches the depending arm 39, said arm is moved to the left until it engages the abutment 38 which prevents 50 further rotation of the disc 3b after a depressed pin has reached the zero mark. When the nozzle 36 is placed in the U-shaped hook 35, the arm 33 is rocked on its pivot 34, elevating the free end of said arm and lifting the stop arm 39 out of engagement with the depressed pin. Now, when a second pin is depressed for further operation of the vending pump and the disc 3a turned in counterclockwise direction, the formerly depressed pin 12) engages an inclined lug 22b as shown in Fig. 8, and is forced outwardly to its normal inoperative position.

It will be understood that in this form, as in those heretofore described, any suitable means may be provided for retaining the pins in either or their two positions, and notches are arranged in the periphery of the disc 317 for engagement with a spring clip to prevent overrunning.

From the foregoing it is believed that the construction and advantages of my invention may be readily understood by those skilled in the art without further description, it being borne in mind that numerous changes may be made in the details disclosed without departing from the spirit of my invention as set out in the following claims.

What I claim and desire to secure by Letters Patent is:

1. In combination with the operating element of a. liquid dispenser, a selective control mechanism comprising a rotary member, means for rotating the same, a series of movable pins carried by said member for selectively controlling the extent of rotation thereof, means operatively associated with said rotary member for driving said dispenser operating element, and means for automatically returning a selected pin to inoperative position.

2. In combination with the operating element of a liquid dispenser and means for driving the same, a rotary member operatively associated with said driving means, a, stop member adjacent said rotary member, a series of movable elements carried by said rotary member and selectively engageable by said stop member, means for releasing said engagement, and means for returning said selected movable member to inoperative position.

3. In combination with the operating element of a liquid dispenser and a shaft for driving the same, a rotary disc geared-to said shaft, a stop member adjacent said disc, a series of movable pins extending transversely through said disc and adapted to be selectively moved into line for engagement by said stop member, means for releasing said engagement, and means for returning said pins to inoperative position.

4. The combination as claimed in claim 3 wherein said stop member comprises a pivotally mounted arm, one end of which carries an abut- 5 ment engageable by said selected pins, the other end of said arm forming a leverfor rocking said arm to release said abutment.

5. In combination with the operating element of a liquid dispenser, a selective control device comprising a rotary member operatively associated with said operating element, a second rotary member co-axial with said first rotary member, means for rotating said second rotary member, clutch means for operatively connecting said rotary members to drive said dispenser operating element, and means for selectively releasing said clutch engagement to limit the rotation of said first named rotary member.

6. The combination as claimed in claim 5 wherein said selective means comprises a series of movable pins carried by said first named rotary member and adapted to be moved into operative engagement with said second rotary member, said releasing means comprising an inclined surface engageable by the projecting end of a selected pin to return the same to inoperative position.

7. In combination with the operating element of a liquid dispenser, an electric motor for drivmg said element, a rotary member operatively associated with the shaft of said motor, a stationary contact ring arranged co-axial with said rotary member and spaced therefrom, a series of movable contact members carried by said rotary member and selectively engageable with said ring to close the motor circuit, means at a predetermined point on said ring for breaking said circuit, and means for returning the selected contact member to non-contacting position.

CHARLES WALKER.

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