US1955712A

US1955712A - Liquid dispensing apparatus

Info

Publication number: US1955712A
Application number: US452157A
Authority: US
Inventors: Snow Alfred Taylor
Original assignee: JOHN WOOD Manufacturing CO
Current assignee: JOHN WOOD Manufacturing CO
Priority date: 1930-05-14
Filing date: 1930-05-14
Publication date: 1934-04-17
Anticipated expiration: 1951-04-17

Description

April 17, 1934. A. T. SNOW 1,955,712

LIQUID DISPENSING APPARATUS Filed May 14, 1930 2 Sheets-Sheet 1 Patented Apr. 17, 1934 PATENT OFFICE LIQUID DISPENSING APPARATUS Alfred Taylor Snow, Philadelphia, Pa., assignor to John Wood Manufacturing Company, Conshohocken, Pa., a corporation of Pennsylvania Application May 14, 1930, Serial No. 452,157 I 4 Claims. (Cl. 22195) My invention relates to apparatus which may be advantageously employed in dispensing gasolene thru 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 therethru, in conjunction with means at said nozzle whereby opening movement of the nozzle valve pulls a wire extending along the hose to operate an electric switch in the pump stand to close the circuit of an electric motor after more definitely specified.

In said drawings; Fig. I is an elevation of an apparatus conveniently embodying my invention, with the hoseand its nozzle released from the hook lever, with consequent release of the means for preventing closure of said motor switch.

Fig. II is a somewhat diagrammatic elevation of a portion of said apparatus, showing the hook T lever depressed, as by the weight of the hose and its nozzle, with consequent positioning of the device to prevent closure of said motor switch.

Fig-1H shows the switch wire gripping levers. Fig. IV is a perspective view of the switch safety lever.

In said figures; the pump stand includes the base 1, standards 2, platform 3, center frame 4,

standards 5, and dome 6.

The liquid to be pumped is withdrawn from a subjacent tankthru the pipe 8, screen casing 9,

and pipe to the rotary pump 11 which has its casing rigidly connected with the lower side of said platform 3. The rotor 12 of said pump is provided with the pulley 13 adapted to be driven by the belt 14 extending around thepulley -15 on the armature shaft 16, of the electric motor Said pump 11 is adapted to discharge the liquid thru the pipe 19, flow meter 20, and pipe 21, into the sight gage 22 from which it gravitates thru the pipe 23 into the flexible dispensing hose 24. Said hose has, at its free end, the nozzle 25 containing the valve 26 which is normally closed by the spring 27 but has the stem 28 engaged by the handle lever 29 which is fulcrumed at 36-. Said handle lever normally stands in the position shown in full lines in Fig. I, with the valve shut, but when it is grasped by the operator and drawn 69 into the position indicated in dotted lines in Fig.

I, against the nozzle handle guard 32, said valve is opened to permit the discharge .of liquid from said sight gage 22 thru said nozzle.

The amount of liquid thus discharged is manifested by the rotary index arm 34 which is operatively connected with said meter 20 and adapted to traverse the circular series of numbers on the dial 35 which conveniently indicate gallons. Said motor 17 is energized by way of the conductors 37 and 38 which conveniently extend thru the stationary conduit 39 to the switch casing 40 which is stationary in said stand 1. "The evacuated tube 41, which contains the'body'of mercury 42. is mounted to tilt in said casing 40 upon the axis 43 and is "tiltable by the switch lever 44. Said tube 41 includes the

terminals

45 and 46 of the motor circuit which are disconnected when the switch is in the open position shown in Fig.

II, to'which it gravitates when released. However, said

terminals

45 and 46 are connected, by the body of mercury 42, to close the circuit and energize said motor 1'1 when the switch lever 44 is lifted to the position indicated in dotted lines in Fig. II. Such lifting movement of the switch tube 41 may be effected by movement of the nozzle valve lever 29 to open the valve 26, and as follows:

Said valve lever 29 has the wire clamping jaw 48 opposed to the wire clamping jaw 49 on the wire gripping lever 50 which is carried by said valve lever 29 to which it is fulcrumed at 51. The end of the switch slide wire 53 normally extends loosely in the handle guard 32 between said

lever jaws

48 and 49,'b ut the arrangement is such that when the operator grasps the handle guard 32, with fingers extending in the space 54, anddraws the lever 29 into the position indicated in dotted lines" in Fig. I, said wire 53 is gripped between said

lever jaws

48 and 49 and pulled, contemporaneously with the opening movement of said valve 26. Said wire 53 extends through the curved tube 55 which is rigidly secured to said handle 32 by the bolt 56 and in continuation of the flexible tubular sheath 57.

Said sheath is conveniently formed of close wound, wire, extends along the hose 24 beneath the outer textile cover thereof, and is secured to the hose by the

clamp bands

58 and 59. Said sheath 57 registers with the curved tube 60 which 110 is a continuation thereof secured, by the bolt 61, in rigid relation with the hose coupling 63.

The end of said wire 53 extends from said tube 60 part way around and is attached to the grooved pulley 64, and is stressed by the weight 65 on said pulley. Said pulley is journaled in the bearing standard 66 on the platform 6'7 which is rigidly secured in said stand 1. Said pulley 64 carries the crank pin 68 in cooperative relation with the lift lever 69 which is fulcrumed at 70 on said standard 66 and carries at its free end the stud 71 which is adapted to lift said switch lever 44 when said wire is pulled as above described and with the effect of tilting said tube 41 and closing the motor circuit, contemporaneously with the opening of the liquid dispensing valve 26 at the nozzle 25 of the hose 24.

In order to prevent closure of said motor switch 41 by manipulation of the

levers

50 and 29 when it is desired that the apparatus shall beinoperative; I provide said stand 1 with the projecting hook lever '73 having the seat '74 in which said nozzle 25 may be hung, with the effect of tilting said lever '73 downward to the position indicated in dotted lines in Fig. I. Said hook lever 73 is pivotally connected by the link '15 with the safety lever 76 which is fulcrumed at '78 in the standard 79 and has its free end 80 upturned and slotted to embrace said switch lever 44 and limit the movement of the latter. When said nozzle hook lever is upturned as indicated in Fig.1; said safety lever '76 is also upturned as indicated in said figure to permit said switch lever to be pulled up to close the circuit by manipulation of the wire 53 by the nozzle levers 29 and 50 as above described. However, when said hook lever '73 is depressed to the position indicated in dotted lines in Fig I and in full lines in Fig. II; said slotted end 80 of the safety lever 76 is depressed to the position shown in Fig. II, in which the switch lever 44 is at the upper end of the slot in said lever end 80 and prevented from being uplifted to close the switch by manipulation of said nozzle levers 29 and 50. Operation of the motor 17 to dispense liquid thru the hose 24 is thus prevented when the hose nozzle is in its idle position upon said hook lever '73.

Moreover, I prefer to provide said hook lever '73 with the pendent link 82 which is mounted to reciprocate in the bearings 83 in cooperative relation with the valve 84 in the pipe 19 so as to automatically stop the flow of gasolene from the pump 11 when said nozzle 25 is thus hung on said hook lever 73, to thus doubly insure that no gasolene may be dispensed when the nozzle is in such idle position.

Altho to comply with some ofiicial requirements, said hook lever is so constructed and arranged that it will remain in its lowered position to which it may be shifted by the weight of the hose, or otherwise, so that it is necessary to uplift it manually to release the pump motor controlling switch; of course, said hook lever 73 may be provided with a spring or weight to thus uplift it when relieved of the weight of the hose.

I also find it convenient to extend thru said conduit 39 a pair of

conductors

85 and 86 of an electric lighting circuit controllable by the light switch 87 which is a fixture in said stand 1. Said lighting circuit includes the lamp 88, adapted to illuminate the dial 35, and the lamp 89 to illuminate the globe 90 to attract attention to the liquid dispensing stand 1;

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

I claim:

1. In liquid dispensing apparatus; the combination with a pump; of a dispensing hose connected with the discharge side of said pump; an electric motor adapted to operate said pump; an electric switch controlling said motor; and means adapted to close said switch including a pulley, a wire fastened at one end to said pulley, extending partly around said pulley and along said hose; a crank pin on said pulley; a lever adapted to be operated by the crank pin on said pulley and in operative relation with said switch lever; whereby traction on said wire in the direction of the flow of the liquid through said hose, partly turns said pulley and effects closing movement of said switch by the cooperation of said crank pin on said pulley with said levers.

2. Apparatus as in claim 1; including a safety lever movable to hold said switch lever in open position.

3. Apparatus as in claim 1; including a safety lever movable to hold said switch lever in open position; and a hook lever operatively connected with said safety lever and adapted to be operated by hanging a weight thereon.

4. In liquid dispensing apparatus; the combination with a stationary pump stand; of a liquid dispensing pump in said stand; an electric motor operatively connected with said pump; an electric switch adapted to control the energizing circuit of said motor, and including a switch lever, normally movable to closesaid switch and energize said motor; a liquid discharge conduit in communication with said pump and including a flexible hose; a hook lever pivoted in said stand and adapted to support said hose in idle position and to be depressed by the weight of said hose in that position; and means extending from said hook lever to said switch lever, adapted to prevent closing movement of said switch lever when said hook lever is depressed by said hose; wherein the hook lever is adapted to remain in a depressed position when relieved of the weight of the hose, so that it is necessary to manually move it to release said motor switch.

ALFRED TAYLOR SNOW.

Ill