US2022629A - Liquid dispensing apparatus - Google Patents

Description

Nov. 26, 1935. J. c. wooDFoRD LIQUID DISPENSING APPARATUS 2 SheetsFSheei; l

Filed June 4, 1951 NGI NOV.. 26, 1935. lQ C, WOQDFORD 2,022,629

LIQUID DISPENSING APPARATUS Filed Jun 4, 1931 2 sheets-sheet 2 dose-PH C Wvofmo/ Patented Nov. 26, 1935- UNITED STATES ram' ortica LIQUID DISPENSING APPARATUS Application June 4, 193i, serial No. 54i,994`

, 2 Claims.

My invention relates to apparatus which may be advantageously employed in dispensing gas-I olene from a flexible' hose having one end connected with a. stationary pump stand and having its free end provided with a nozzle including a manually operative valve controlling the dispensation of liquid therethrough; said hose having means adjacent to said stand operatively connecting said hose with an electric'switch inthe stand for controlling the circuit of an electric motor for operating a pump to supply theliquid for discharge through` the hose.

As hereinafter described, mere bending movement of the hose away from the stand, by the operator manipulating the hose to dispense liquid therethrough, sufiices to close said electric switch to start and maintain the operation of the pump motor. Suchclosing movement of the switch is effected against the stress of a spring which normally tends to open said switch and stop the motor. Such operation is terminated when the operator releases the hose, permitting it to swing back to its normal position; such release permitting the switch to be opened by said spring.

In the form of my invention chosen for illustration the motor controlling mechanism which is in cooperative relation with the hose as above indicated is also in `cooperative relation `with a hose support which is pivoted in the pump stand and projects' exterior thereto and is adapted to support the hose in idle position by engagement with the hose nozzle; said hose support and nozzle being so correlated that they may be locked together in idle position and, when thus locked, the motor controlling mechanism is rendered inoperative by its connection with the hose. That construction and arrangement is advantageous in that it prevents accidental or mischievous manipulation of the hose to operate the motor when the hose nozzle is in such idle position. I-Iowever, when the nozzle is released from said support, the controlling mechanism is freed to be operated by its connection aforesaid with the hose. Therefore, simpler embodiments of my invention may be made including the hose operable without correlation (Cl. 22l-95i `taken on the line II, II, in Fig. I, but on a larger scale.

Fig. III is a fragmentary vertical sectional view taken on the line III in Fig. II, on the same scale as the latter. 5

Fig. IV is an elevation of the right hand side of certain of the parts of the controlling mechanism as shown in Fig. IIIIZ` and on the same scale.

In said figures; the pump stand `includes the base I, casing 2, platform 3, center frame l, casing 5, and domes.

The liquid to be pumped is withdrawn from a subjacent tank through the pipe 8, the screen casing 9, and the pipe' Ill to the rotary pump Il which has its casing rigidly connected with the lower side of said platform 3. The rotor I2 of said pump is provided with the pulley I3 adapted to be driven by the belt I4 extending around the. pulley I5 on the armature shaft I6 of the electric motor I1. 2o

Said pump I l is adapted to' discharge the liquid through the pipe I9, thevmeter 20, and the pipe 2| into the sight gage 22 from-which it gravitates through the pipe 23 into the exible dispensing hose 24. Said hose has, at 4its free end, the nozzle 25 25 containing the valve 26 which is normally closed by a spring. Said valve has the stem extending through the stuiilng box 3l in said nozzle 25, adapted to be operated by thelever 3 4 which is fulcrumed at in the nozzle -frame 36. 30 Said iiexible hose 2B is provided with the band 38, conveniently formed of two oppositely counterpart semicylindrical sections hingedly connected by the pintle 39 at one side of the hose and clamped upon the latter by screws 40 at the 35. opposite side of the hose. Said pintle 39 is pivotally connected with the flexible connector All, conveniently a fiat link chain. Said chain is pivotally connected, by the screw 43, at its other end, with'the long arm 44 of the bell crank lever 40 having the short arm 65. Saidlever is fulcrumed en the pin 86 in the lever bracket d1 which is rigidly connected with the innerface of said' casing 5, conveniently by the three screws 9. Said screws 49 are in screw threaded engage ent with 45 said bracket 41 but extend through smooth holes in the roller bracket 5I which they rigidly secure upon the outer face of said casing 5. 4Said bracket 5I supports the two rollershafts 52 uponwhich are respectively journaled the two rollers 53, upon 30 opposite sides of said ilexible connector 4I which they guide, so as to permit said hose 24 to be pulled in any direction within an arc of one hundred and eighty degrees, to draw said ilexiblev connector 4I between said rollers with a mini- 55 mum amount of friction, said rollers serving as anti-friction bearings.

As shown in Figs. II and IV, the short arm 45 of said bell crank lever has the cylindrical stud 55 overhanging the collar 56 which is adjustably rigidly connected with the vertical slide rod 51, conveniently by the set screws 58. Said rod is mounted to reciprocate in the bearing 59 in said platform 3 and in the bearing lug 60 on said bracket 41. Said rod 51 is continually stressed upwardly against said lug 55 on the bell crank lever arm 45 to pull the flexible connector 4| and hose 24 to the position shown in Fig. III, by the spring 6| which encircles said rod between said platform 3 and the collar 62 which is adjustably rigidly connected with said rod, conveniently by the, two set screws 63.

Said slide rod 51 carries the bifurcated arm 65 which is adjustably rigidlyl secured thereon by the set screws 66 shown in Fig. III, so as to embrace, in the slot 61, between its bifurcations, the plunger 68 which is mounted to reciprocate in the bearing 69 of the switch casing 10 which contains a switch of any suitable type, indicated at 1| in Fig. III, operable by said plunger to control the circuit including the conductors 13 and 14 of said motor I1. Electrical energy is supplied to said motor through the conductors 15 and 16 which are conveniently extended-to said switch box 16 through the conduit 11 which is stationary in said pump stand. In the position shown; the switch plunger 68 is at the upper range of its movement and the motor circuit broken. Said circuit is closed by downward movement of said plunger; effected by the operator pulling the hose away from the stand as above contemplated. The operator holds the hose 24 in such bent position during the time when it is desired that said motor I1 shall be operated to dispense liquid through said hose.

It is to be particularly noted that, in comparison with devices of the prior art in which a rigid connector extends from the hose to the means for controlling the iiow of liquid through the hose; the connector 4|, which is flexible in any direction at the hose and at the wall of the casing, affords at least two distinct advantages,

to wit, first, the maximum range of lateral movement of both the hose and its connection Withthe controlling means is afforded with the minimum of projection thereof through the Wall of the casing containing the pump and, second, it is irnpossible to disable the connection by lateral movement thereof, whereas, with the rigid connections aforesaid, the range of lateral movement of the hose is materially limited and if the hose be accidentally forced aside from the plane in which the rigid connection is designed to move, the latter is distorted and disabled.

Electrical conductors 19 and 80 may be extended through the conduit 6| from the conductors 15 and 16 and in multiple relation with thev motor circuit, to energize an electric lamp 62 in said dome 6.

As shown in Figs. II and IV; the upper end 84 of said slide rod 51 is bent at right angles therevto and fitted through the slot 85 in the arm 86 of the hose supporting lever 81 which is fulcrumed on the shaft 88 in the bracket 89. Said bracket 89 has the outer face plate 90, rigidly connected with the outer face of the pump stand casing 5, conveniently by the screws 9|. Said lever 81 has the upwardly extending locking flange 93, intermediate of'its width, adapted to project upwardly through a slot in said'nozzle frame 36, and having the hole 94 through which the staple of a padlock 95 may be' extended to hold said nozzle upright with the discharge end 96 thereof projecting through the slot 91 in said casing 5, as indicated in dotted lines in Fig. I; in which position the nozzle serves to bracesaid lever 81 against upward movement and thus prevent accidental or malicious operation of the electric switch 1| by pulling the hose 24 when thus'locked in idle position. l()

It may be observed that the slot 85 in the arm 86 of the hose supporting lever 81 is of such extent that said lever may be idly upturned to the` limit of its movement, stopped by contact of said flange 93 against the flange 98 on said plate 90. Howi5 ever, `when said lever 81 is released by removal of said nozzle; it is free to be moved from the position shown in Fig. III to the upper limit of its movement by pulling the hose 24 away from the stand and thereby turning said bell crank 20 lever arm 45 downward, as above described, to depress said slide rod 51 against the stress of said spring 6| which latter continually tends to restore the switch controlling mechanism to the idle position shown in Fig. III, in which the motor circuit 25 is broken.

However, as above indicated, my invention may be simplified by omitting the parts which cooperatively connect the motor switch controlling` devices with the means for supporting the hose, 30 and the hose be otherwise supported than by the lever 81.

Moreover, it is to be understood that the exible connector 4| may be operatively connected with the motor controlling switch, by means other than 35 above described.

Therefore, I do not desire to limit myself to the precise details of construction, arrangement, and method of operation herein set forth, as it is obvious that various modifications may be made 40 therein without departing from the essential features of my invention, as dened in the appended claims.

I claim:

1. In liquid dispensing apparatus; the combination with a flexible hose; of a fixed support for one end of said hose; said support having an opening therethrough; a roller bearing plate on the outer face of said support in registry with said opening; a lever bearing plate on the inner face of said support in registry with said opening; fastening means extending through said support and both of said plates, for holding them in rigid relation; a pair of rollers journaled in 55 said roller bearing plate upon respectively opposite sides of said opening; a lever fulcrumed on said lever bearing plate in registry with said opening; a clamp band encircling said hose in registry with said opening; an electric switch 60 operatively connected with said lever; means continually stressing said switch toward one extreme of its movement; andv a flexible connector pivotally connected at one end to said lever and connected at its opposite end to said band; whereby bending movement of said hose tilts said lever and operates said switch in one direction and release of said hose permits said lever to be automatically returned to its initial position.

2. In liquid dispensing apparatus; the combivnation with a stationary pump stand having an motor in said stand, operatively connected with said pump; a liquid discharge conduit in com-v munication with said pump and including a ilexible hose having one end held stationary at said pump stand; a nozzle valve at the free end of said hose; an electric switch in said stand, adapted to control the energizing circuit of said motor. and including a recirocatory plunger; means cooperatively connecting said exible hose with said switch, including a flexible connector extending through said opening between said rollers and having one end connected with said hose; a bell crank lever Iulcrumed in said stand and attached to the other end of said ilexlble connector; a slide rod mounted to reciprocate in said stand, parallel with said switch plunger; means on said rod in cooperative relation with said bell crank 40i said pump, when the dispensation of liquid through said hose be 15 lever; an arm carried by said rod in cooperative relation with said plunger; and a spring in cooperative relation with said rod, arranged to stress the latter to open said switch; whereby, said ilexible connector is mounted for reciprocatlon. 5 through the sidewall of said pump stand and may be pulled outwardly by the operator ilexing said hose in any direction away from said stand to eil'ect a dispensing operation, against the stress of said spring, and said switch be closed and said 10 pump operated while .said hose is held in dispensing position, and said switch be automatically opened, by said spring, to terminate the operation said hose is released; and

manually controlled at said nozzle valve: v JOSEPH C. WOODFORD.

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