US2326636A - Liquid dispensing apparatus - Google Patents

Description

Aug. l0, W43. A. 1 GRISE LIQUID DISPENSIING APPARATUS Filed Jan. 2, 1942 m-m A Patented Aug. 10, 1943 Alfred L. Grise, springfield, Mass., signor to Gilbert & Barker Manufacturing Company, West Spring-Held, Mass., a corporation of Massachusetts Application January 2,1942, Serial No. 425,392

1 claim. (ci. zei-95) This invention relates to improvements lin .a liquid dispensing apparatus having `a iexible hose. A iilling station gasoline pump is the important example, The idea is to provide conv trol means operable in a new way by the movement of the hose,for startirg and stopping the pump. This willbe disclosed by the accompanying drawing, as illustrative means.

Fig. 1 is a sectional elevational view of a gasoline dispensing apparatus embodying the invention;

Fig. 2 is a detail view of parts; and

Fig, 3 is a detail view indicating the spring drum construction.

In the drawing a specii'lc type of hose handling apparatus has been shown in connection* with a well-known form of gasoline dispensing pumpL Such pump is shown as embodying the extensible hose handling apparatus shownin the Hope Patent No. 2,225,271, dated December 17, 1940. However, this serves as an illustrative example only, since it will be recognized that the device of my invention may be adapted to other forms of hose handling equipment in connection with pump apparatus. It is not "intended that the invention be limited to the particular extensible' hose handling structure of said prior patent.

'Ihe various operative elements necessary forl dispensing the liquid through the 4system are shown in Fig. 1, and it will sumce here to trace the ow of liquid from the inlet of the pump to its outlet. The fluid is ilrst drawn up from an underground tank (not shown) through suction pipe I by a pump 2, (driven by an electric motor 3), and is then forced by the, pump through a discharge line 4 to air separator 5. From the air separator 5 air-freed liquid passes through a meter 8, (which drives a register 'I by means of a shaft 8), then through a pipe 9 to the exible hose I0 and valvefcontrolled nozzle II. A11 these parts are'generally known, all being suitably housed in a casing, except for the dispensing nozzle and its connection through the casing, two walls of which are shown by the numbers l2. i

The exible hose I0 in lthis structure as illustrated hangs in two loops-one hangs outside the-casing in the usual manner with the nozzle |I placed on the support I3; the other, connected with-the outside loop by a section of the hose passing across the top of the pumping means, hangs inside the casing and passes around a sheave I4 adapted to rise and fall within-a narrow well formed bygone 'casing wall I2 and a sheet of metal Il attached for that purpose to supporting posts I6 of the pump standard. 'I'he inside loop is only used in instances when more than the ordinary length of hose is required to reach a point at which delivery is desired. The outside loop alone, as pointed out l in said previously' mentioned Hope patent, will sufhce to serve an area effective'for most. deliveries.

The flow controlling mechanism will now be described withreference to Fig. 1. A control lever I8 mounted on a shaft I3' extending through .the nozzle support I3 asindicated, is in oil position when nozzle I I is hung on the support. l

The nozzle handle `guard blocks leverv I6 from turning to on position. The lever I6 governs Y a rod l1 which slides freelyin la vertical hole I8,

see Fig. 2, in one end of a switch arm I9. Arm I9 is pivoted in the middle on a switch box 2|. A stop collar 2|I on rod I1 contacts one endo! l the arm I3 when the control lever I6 is in oil position, as in Fig. 1, and prevents the switch arm I8 from being turned clockwise and there- 4 by prevents closing the circuit of the switch in box. 2|. Box 2| is attached to motor 3 and the switch controls the running of the motor. No detail of the electrical connections is shown here as the switch and motorarrangement per se is well known in the art and widely used. The

novelty-in my arrangement has to do with the means and circumstances of operating the switch.

When the nomle is taken oi its hook support I3 and the control lever I6 is moved to on" posltion (by counter-clockwise movement), the rod I1 is moved upwardly (by aflever arm. the

near end I6 of which is shown in Fig, 1 attached to` shaft I3', the far end of which moves upwardly while engaging rod I1). Rod |1, sliding freely in the vertical hole I8 at the end of switch arm I9, carries the stop collar 20 away from contact with arm I9 aperturedend of arm I9 is then free to move; upwardly and operate the switch 2| to close the circuit and start the pump motor.

The mechanism for actuating the switch arm I9 when the stop collar 2li is raised is connected with that end of switch arm I9 opposite the apertured end. This end is bifurcated for a purpose to be presently described. Two stop pins 22 and 23 above and below arm I9 are arranged to limit its movement.-

Adjacent the switch box 2| on shaft v3|! .is mounted aspring drum 24 with a cable 25 wound (see Fig. 2). The.I

thereon, see Figs. 1 and 3. The cable 2l has one mounted on the casing wall below the opening through which hose I3 extends to, the outside loop. The cable then passes through an opening in the wail to the outside and running through a guide collar 2l on hose I0 it is attached to a bridle clamp 2 3, alsoafl'lxed to hose I3.

I'he spring drum is provided with a boss 23 which is suited to drive by frictional contact a tripping arm 3| mounted onv shaft 30. 'I'he tripping arm extends between the prongs at the bifurcated end of switch lever arm I3 and is capable of moving that end of arm i3 up or down within the limits imposed by stops 22 and 23.-

It will be seen from the above description that as the cable is unwound from the drum 24 the rotation of the drum will cause` the tripping arm 3| to move in a counter-clockwise direction. The end of arm 3| will then move thebiiurcated end of switch arm I3 down or clockwise. This turning of arm I3 will close the switch and start the pump motor. When the circuit has closed, stop 22 will hold arm 3| from rotating further in that direction, since arm |3 has reached the limit of its movement. This on position is indicated :in Fig. 2. 'I'he cable may be unwound further than enough to close the switch and this continued rotation of drum 24 will not move arm 3|. A `irictional contact only exists between boss 23 and arm 3|.

When the unwinding movement oicableV 25 stops, the spring 34 -in the drum will begin to rewind the cable and thus turn the drum in a reverse'or clockwise direction unless something prevents such operation. This operation, when permitted, will carry the tripping arm 3| in contact with arm I9 inA an upward direction or a counter-clockwise turning oi.' arm I3. The switch will then open and the stop 23 will eectively resist any further motion of arm 3|.

It will be recognized that in the same manner as stops 22 and 23, stop 20 resists rotation of arm I9. Thus, until control lever i6 is in on Pos1- tion with stop 2'0 raised as in Fig. 2, rotation of drum 24 and arm 3| will have no eilect on arm I3. As indicated in Fig. 1, the nozzle support I3 when it supports the nozzle by the handle guard, provides for blocking the movement of lever lrand thus stop 20 to on position.

In operation the device works as followsz'fll'he nozzle is taken on its support and the lever I6 is turned to on position.v The operator carries' swing `outwardly from the casing by a pivoting movement and carry the Acable with it. The

" weight of the hose itself is enough to exert the tension necessary to withdraw cable 25. The

ascenso shift or the hose from vertical position to one at an angle causes cable 2B to turn the drum 24 and trip arm I3, stop 23 having been raised by lever '|6. Thus, the motor starts the pumping system and dispensing can take place. Y In case the outward swing is not enough, which would be the situation if it were not necessary for the operator to carry the nozzle away from the side of the pump to make his delivery, the operator can start the motor merely by raising the hose portion next the pump casing toward a horizontal position enough to operate cable 25. With this construction, ifv during dispensing or after the operator carelessly leaves the hose un.- attended, the portion next the pump casing will drop back toward vertical position and thus permit the spring to rewind the slackened cable and shut oli.' .the motor. It will be noted that structure disclosed is adapted to automatically start the motor without the need for the attendant doing more than carry the hose to the point of delivery. For all deliveries with the ordinary length of hose, the operator can ignore the existence of the reserve loopinside the casing without being called upon to pull out-a certain length of hose to actuate the cable and its associated means. 'I'he cable is made of a length sumcient to allow extension of the hose l0 to its maximum length in the illustrated apparatus. 1

What I claim is:

In dispensing apparatus of the electric gasoline Dump using a delivery hose with a loop normally hung on the outside ready for use and having switch, mechanism to open and close said switch,

said mechanism comprising a switch-operating l element, actuating means for saidelement made up of a` drum-like member to store a long cable cord, a spring adapted to wind such cord on the drum-like member, a cord connected to tension said spring when unwound, said cord being connected to the hose portion normally outside the casing to cause its unwinding as said hose is .moved for delivery, a friction drive between said switch operating element and said drum adapted to promptly open and close said switch as .the drum 1s turned in one direction or the other, all

- adapted `for said cord to operate with the hose for the purpose described, whether or not the outside portion is moved along or the inside portion is pulled out ofthe casing to reach the point of delivery.

ALFRED L. GRIs.

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