US2231852A - Gasoline dispensing apparatus - Google Patents

Description

11, J. D. GASOLINE DISPENSING APPARATUS Filed Feb. 24, 1940 INVENTOR Jose 0A .D. Lear BY 3140? My: ATTORNEY Patented Feb. 11, 1941 UNITED. STATES ossomvn msrnnsmo arram'rus Ioseph D. Lear; B'nihlo, N. Z; assignor to m & Schwartz. 1120-, will, Md.

Application February 24, 19, Serial No. 320,093 5 Claims. (01. 221-95) This invention relates to gasoline dispensers,

and it has particular reference to'improvements in the controls for the motiveelements thereof.

In installations where automatic hose reels are 5 used, the application of safety controls thereto has proved a difllcult problem. This has been particularly aggravated where the requirements demand that the controls be so arranged that the motive or pumping elements remain oper-v able only when the attendant is at the controls.

In the present invention, this is accomplished in a simple and practical manner through the use of a hose-carried pneumatic system which is. unaflected by the variables which have heretofore rendered this problem so difllcult. such as stretching of the hose, temperature changes, and the varied positions oi the hose when inactive service. a Y

The more specific aspects of the invention are 2 set forth in detail in the accompanying specification and drawing, wherein:

Fig. l is a side elevation of a dispenser show-- ing diagrammatically the location oi the various units: 25 Fig. 2 is an enlarged section on the line 2-2 of Fig. l, with portions shown in elevatim;

Fig. 3 is a section on the line 2-4 of Fig. 2;

and 1 Fig, '4 is a diagrammatic view showing the 30 electrical circuit of the dispenser motor.

The invention is organized with a gasoline pump unit having a casing i0 containing liquid dispensing mechanism including a motor-drivenpump i i, whichpump directs gasoline toa flow 35 meter whence it is delivered through a pipe i2 to a hose reel N. The motor Ila may. 1!- desired, 'be controlled by a switch M which is opert by a lever II. which lever serves also as a support for the nozzle it of a dispensing hose 40 I1.

I It will be observed that the hose i1 contains" I 50 bleed port 20a which maybe covered 'by' the operators hand during operation, andwhich otherwise, serves to retain the air within the passage 22 at atmospheric pressure.

J The reel I2 is the usual spring-energized N which is altered slightly to permit organization the attendant removes the nozzle thereof with the previously mentioned second motor control i2. As will be seen in Fig. 2, the

reel i2 is fabricated of end plates. 24, 25, and an attached cylindrical drum 26. An. adapter, 21 is secured to the plate 25 and it is formed with 5 [a radial duct portion 28 whichextends through an opening 22 in the drum 26 and terminates in an angular portion 22a. The extremity of the hose i1 is connected to theportion 28a by a coupling 2i. and the adjacent portions oi the hose are coiled about the drum 2-6 with the free extremity extending through a suitable guide rollerstructure 22 to the exterior of the casing iii.

The adapter 21 is formed with a protruding axial portion 20, which is received in a bearing and gland structure 2i carried in a pedestal 33. The pedestal 22 receives, the end of the previously mentioned pipe l2, which pipe conveys gasoline to a chamber 24 in thegped'estal, where it enters the hollow axial portion and is thus delivered 20 tothehose i1.

A second pedestal is formed with a boss 36, I through which extends a hollow pintle 21. The pintle 21 is held against rotation by. a set screw 22. The plate 24 carries a ball bearing 39, which 25 is mounted upon the projecting end of bearing the pintle 21. The plate is also formed with a circular flange ll to-which one end of a helical spring 42 issecured. The remaining end of the spring J2 is secured to the boss 38, and inas-- much as the spring is positioned under considerable tension, it will be apparent that it serves as a motor tor turning the reel i3 when the. hose I1 is released by the operator.

The motor control i2 isorganized with the M adapter 21 and the fixed pintle 21, and it consists of an open axially positioned chamber 23 which is tormed integrally with the adapter 21.

. The chamber 42 is closed by a flexible diaphragm M. A cylindrical switch box 45 is fastened to the end of the pin-tie 21, and its flanged open end 42 slidably covers the lip ll of the adjacent chamber 42. A switch 52 is carried within the box and its actuating button II is located axially, and

thus is opposed by the center 01 the diaphragm 45 M, which diaphragm is furnished with an actuating pin 42'. The electrical connections 52, 53

of the switch iii extend through the hollow pintle 21, whence they are connected to the motor'circuit, as will be seen in Fig, 4.

A coupling tube 54 connects the extremity of the air passage 22 of lthehose I! with the diaphrasm chamber 42.

- Inthe operationv oi the'dispensing mechanism,

It from the is. 2

lever I I, and then lifts the lever to throw the switch II. It will be noted (Fig. 4) that the switch It is in series with the second switch I8, and thus this act is only a preparatory move to the energlzation of the motor. The hose H is now drawn from the reel l3 against the tension of the reel spring 40, to permit the positioning of the nozzle H5 in the tank of an automobile. During this operation it will be observed that the diaphragm chamber 43 is rotated with the reel, but inasmuch as it is, axially located, its position with reference to the stationary switch 50 is not changed. When the attendant is ready to fill the tank of the automobile, he covers the small bleed port 20a and simultaneously squeezes the bulb I 9, thus compressing the air in the pneumatic system and causing the flexible diaphragm 4-6 to be extended sufilcintly to throw the switch i8. This closes the motor circuit, and gasoline is immediately available for delivery through the meter hose and nozzle to the automobile tank.

If the attendant should, for any reason, leave the dispensing station with the nozzle remaining in the tank, it will be obvious that the motor circuit will be broken upon release of the bulb W. This provides a desired safety feature, wherein the escape of gasoline under pressure is guarded against in the event of a rupture of the hose under the conditions above outlined.

Ihe invention thus provides an extremely simple and positive control for the motor-driven pump H, which control feature is not affected in' any way by the positioning of the hose nor the extent to which it is uncoiled from the reel l8. It will be obvious to those skilled in the art that the dispensing system herein described is exemplary of but one of numerous possible adaptations, and thereforethe reel control feature may be applied to other dispensing systems and similarly be organized with other controls, switches or solenoids without departing from the inven V tive concept.

I claim: 1. In a gasoline dispenser having asource of liquid under pressure, a dispensinghose, a reel 7 having one end of the hose attached thereto, said reel being rotatable to permit ceiling or the hose thereon, said reel having a liquid passage therein connecting the end of the hose with said pressure source, a control conduit coextensive with said hose, depresslble means on the tree end of the hose connected with an extremity of the control conduit, expansible means carried by the reel and connected to ,the remaining extremity of'the conduit, and control means for said pressure source organized for operation by said expansible'means.

2. In a gasoline dispenser having a source of liquid under pressure, a dispensing hose, a reel, said reel having a liquid passage therein connecting one end of the hose with said pressure source,' stationary means for mounting the reel for rotation to permit coiling of the hose thereon, a control conduit coextensive with the hose, depressible means on theiree extremity of the hose connected with an extremity of the control con-- duit, expansible means carried by the reel and connected to the remaining extremity of the conduit, and control means axially carried by said stationary means and organized for operation by said expansible means.

3. In a gasoline dispenser having a source of liquid under pressure, a dispensing hose, a reel, said reel having a liquid passage therein connecting one end or thehose with said pressure source, stationary means for mounting ,the reel for rotation to permit coiling of the hose thereon,

a control conduit coextensive with the hose, depressible means on the tree extremity of the hose connected with an extremity of the control conduit, expansible means carried by the reel in an axial position thereon, and control means carried by said stationary means and organized for operation by said expansiblemeans.

4. In a gasoline dispenser having a source of liquid under pressure, a dispensing hose, 9. reel, said reel having a liquid passage .therein connecting one end of the'hose with said pressure source, stationary means for mounting the reel for rotation to permit coiling o! the hose thereon, said stationary means including a fixed hollow pintle for said reel, a control conduit coextensive with the hose, depressible means on the free extremity of the hose connected with an extremity ofthe co trol conduit, expansible meanscarried by the r e1 in an axial position thereon, an electrical control switch for the liquid source carried on an extremity of saidpintle and having an axially positioned switch button operable by said expansible means, and electrical connections to said switch extending through said hollow pintle.

5. In a gasoline dispenser including a motordriven pumpfa dispensing hose, 9. reel, said reel having a liquid passage therein connecting one end of the hose with said pump, said reel being mounted for rotation to permit coiling of the hose thereon, a control conduit coextensive with said hose, depressible means on the free end of ing extremity of the conduit, and fixed switch means having a switch button positioned in the path of said expansible means, said switch means controlling operation of said motor-driven pump.

JOSEPH D. LEAR.

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