US2147126A - Switch handle control mechanism for dispensing pumps - Google Patents

Description

C. T. NEAL Fel. 14, 1939.

SWITCH HANDLE CONTROL MECHANISM FOR DISPENSING PUMPS g Il h .14. i l mvr y@ MU/ E. lo 5 O O P o o Feb. 14, 1939. c. T. NEAL 2,147,125

SWITCH HANDLE CONTROL MECHANISM FOR DISFENSING PUMPS Original Filed May 5, 1957 3 Sheets-Sheet 2 INVENTOR @ESTER z /Ve-AL 'Feb. 14, 1939.

C. T. NEAL SWITCH HANDLE CONTROL'MECHANISM FOR DISFENSING PUMPS Original Filed May 5, 1937 3 Sheets-Sheet 3 INVENTOR @mi 77M ATTORNEYS Patented F eb. 14, 1939 SWITCH HANDLE/ CONTROL LIECHANISM FOR DISPEN SING PUlYlPS Chester T., Neal, Springfield, Mass., assigner to Gilbert & Barker Manufacturing Company,

West Springfield, Mass.

sachusetts a corporation of Mas- Application May 5, 1937, Serial No. 140,874

' Renewed June 30, 1938 6 Claims.

As is customary in such dispensing pumps, the

register has a manually actuated' device for resetting its indicator to zero so that the quantity of each dispensing operation may be accurately l and separately registered' and the present improvement relates more particularly to means for inducing the pump attendant to perform the resetting operation of the register prior to the start of each new dispensing operation.

The particular features of the invention and advantages thereof will be more clearly apparent from the following description taken in connection with the accompanying drawings, in which Fig. 1 is a front elevation of the entire pump casing with a portion of the casing removed to show interior parts;

Fig. 2 is a right side elevation of the pump casing with the relative position of some of the principal parts indicated thereon;

Fig. 3 is a detached side elevation of the motor switch handle for the pump and its mounting;

Fig; 4 is e. fragmentary section along line 4-4 of Fig. 3;

Fig. 5 is a similar section along line 5- 5 of Fig. 3;

Fig. 6 is a partial'end view of the switch handle bracket showing behind the same in dotted lines one position of the locking beam and its associated parts; and

Fig. 7 is a similar view showing the other position of said locking beam and associated parts.

Referring more particularly to the drawings,' I indicates the pump casing, 2 the casing of a combined motor and pump unit, and having integral therewith the casing 3 for containing the motor switch as is well understood. The liquid fluid or gasoline is drawn by the pump through the pipe 4 from asource of supply not shown and forced out through delivery pipe 5 and meter 6 and finally through dispensing hose 'I and nozzle 8. The nozzle guard 9 is adapted to rest on a fixed support I0 extending from the pump casing and when on said support the g'uard 9 interferes and prevents the turning to on positionof the motor .switch handle II. The switch handle Il is fixed to a turnable shaft or stem I2 mounted in a bracket I3, the latter being secured to the pump casing.

As shown in Fig. 3, the inner end of said handle stem I2 has xed thereto an arm I4 connected by link I5 to an arm I6 for operating the motor switch within the casing 3. In Fig. 2 the motor switch handle I I is shown in its off position for shutting off the pump motor and the line of the on position is also therein indicated. As shown 5 in Figs. 4 and 5, the movement of the switch handle II between its on and 01T positions is limited by stop pins II and I8 fixed to the stem I2 coacting with stop lugs I9 and 20 fixed to the bracket I3.

The register indicator for the pump is shown generally at 2l and is provided with the usual number dials 22 for indicating the quantity of gasoline dispensed in terms of gallons and in terms of cost value as is the present day practice with l5 such registers. The register is driven in the usual manner through shaft 23 from the uid operated meter 6. The resetting mechanism, for returning the indicator dials 22 to zero after the dispensing operation, comprises a crank handle 25 fixed 20 to a reset shaft 26 which extends across the pump casing and is permanently clutched to a cam collar 21 mounted in the bracket I3. It will be understood that the resetting shaft 26 when revolved through a complete revolution (counter- 25 clockwise as one faces the handle 25) operates the usual devices (not shown) for returning the indicator dials 22 to zero.

Referring more particularly to Figs. 6 and 7, the switch handle stem I2 has loosely mounted 30 for a partial and relative rotation thereon a resist member in the form of a cam collar 28. As shown in Figs. 3 and 4, the relative movement of the cam collar 28 on the stem I2 is limited by a pin 29 fixed in stem I2 and extending into a segmental 35 slot 30 formed in a reduced shoulder of said collar 28. A coil spring 3l has one end 32 thereof xed to the handle stem I2 at a pin I'I thereof and the other end of the coil spring is fixed into the collar 28 by an anchoring projection 33 of said 40 spring. The tension of the spring 3| tends to rotate the cam collar 28 counterclockwise and to rotate the handle stem I2 clockwise relatively to one another until the pin I9 abuts the right hand Wall of the segmental slot 30, as viewed in Fig. 4. 45

or resist member 28. On the" other hand, if no means interpose to prevent the follow-up action of collar 28 with respect to stem I2, then the collar will turn back and forth with said stem in the vmovements of the latter between its off and peripheral surface of the cam collar 28 (at one side of caml 50) and is adapted to drop into a cam notch 31 formed insaid surface'and having a stop shoulder 38 whereby when the end 36 is in said l notch the collar 28 will be prevented from clockwise movement. The other end 39 of said locking beam 35 works against the peripheral surface of the cam collar 21 (at one side of cam 5I) and is adapted to drop into locking notch 48 for preventing rotation of said reset shaft 26. The shoulder 4 Iv of said notch 48 is suiciently beveled to permit the reset shaft 26 being rotated clockwise, viewing Fig. 7, upon application of extra force, and camming said end 39 out of the notch 48, except when the end 36 of said 4beam 35 is resting upon the solid unnotched portion of said collar 28. In said latter condition which is the position with the switch handle II in on position, the end 39 when'in notch 40 positively locks the reset shaft from being operated. It will be understood that the reset shaft 26 in its resetting action turns clockwise when viewing Fig. 7.

The means for shifting and holding the locking beam 35 into its two different positions as shown in Figs. 6 and 'I comprises a loading spring 42 mounted on a toggle rod 43, one end of which rod is pivotally connected at 44 to a toggle plate 45` and the other end of which rod slides through a rocking pivot stud 46 extended from the bracket I3. The spring 42 is interposed under compressed tension between said pivot stud 46 and a shoulder on said rod 43. The toggle plate 45 is a bifurcated member straddling the beam 35 and pivoted on the stud 44. Between the side members of said toggle plate 45 are mounted studs or rollers 41, -48 and 49. The cam collar 28 is formed with a cam 58 which is in a plane at one side of the beam 35 and in the plane of said roller 41 so as to. act thereagainst. Similarly, the cam collar 21 on the reset shaft 26 is provided with a cam 5I adapted to act against the rollers 48 and 49 of the plate 45. It will be understood that when the cam collar 28 turns clockwise it's cam 58 acts against roller 41 to throw the toggle 43, 45 from the position shown in Fig. '1 to the position shown in Fig. 6, and that when cam collar 21 rotates clockwise its cam 5I acting against the rollers 48 and 49, throws the toggle combination 43, 45 from the position shown in Fig. 6 to that shown in Fig. '1. With the toggle in the position shown in Fig. 6 roller' 49 bears against a shoulder of said vbeam 35 whereby the loading spring 42 tends to rockthe beam 35 anticlockwise to bring its end 36 into the notch 31 of said cam'collar 28, and

when the toggle is in the position shown in Fig. 7 the roller 41 bears against the beam 35 whereby the loading spring 42 tends to remove the end 36 from the notch 31 and to press the end 39 into the notch 48 of cam collar 21.

The loperation of the above described mechanism in connection with the operation of the pump will now be described. Assume that the pump attendant has just completed a dispensing operation and has turned off the motor switch, but has vnot yet operated the reset mechanism. The switch handle I I thereof will then be in the olf position shown in Fig. 2. The toggle 43, 45

. will be at the left as shown in Fig. 6, having been thrown to this position by the previous on movement of the switch handle I I. The loading spring 42 presses the roller 49 against the beam 35 and holds its end 36 in the notch 31 of said cam collar 28, whereby said cam collar 28 cannot turn clockwise.

If in this condition of/'the parts the attendant A fails to operate the reset crank 25 for returning the register to zero, buton the contrary turns on the motor switch for a new dispensing operation, he does so against the resisting force ofthe spring 3I because since the cam. collar 28 is locked against its follow-up movement with the stem I2 said stem can only be turned by further compresits on position. If the attendant lets go of the handle II Vit will move back to off position and stop the pump under the force of the spring 3l. However, the attendant being warned by the resistance of said spring 3| that the reset mecha.- nism has not been operated, he should immediately operate the same by turning the reset shaft 26 a complete revolution through the handle 25. The turning of the reset shaft will then carry its cam 5I against the rollers 48 and 49 and throw the toggles 43, 45 to its right hand position shown in Fig. '1. In this position the roller 41 bears on the beam 35 and the loading spring 42 will rock said beam to withdraw its end 36 out of notch 31 and release the heretofore locked cam collar 28. Upon said release the cam collar 28 under force of its spring 3| immediately follows up to the on position of the stem I2 and thereby removes all resistance of said spring 3I to said on position of the switch handle I I. Under these conditions the attendant may let go of the switch handle I I and it will remain in on position so that the dispensing can be proceeded with.

The normal and proper way for the attendant to operate the mechanism in performing a dispensing operation when the switch handle is in off position as shown in Fig. 2, is to first rotate the reset shaft 26 by handle 25 before turning on will readily follow up the' movement of Asaid switch n handle stem I2.

By the arrangement above described the pump attendant may at all times whether or not the reset mechanism is operated, turn on the motor switch for starting the dispensing operation, but unless the reset shaft has been revolved previously to turningon the switch handle, the dispensing cannot be continued except by manually holding said handle in its on" position against the tension of the spring. On the other hand, by operating the reset mechanism before turning the switch handle on the 'latter is moved on without resistance and will remain in its on position without being manually held on, and the attendant can walk away from the pump for more conveniently servicing an automobile with gasoline. Itis expected that the warning given by the resist member and its spring, together with the convenience of being able to leave the pump, will be a suiiicient inducement for the attendant to always operate the pump in the proper sequence of steps, viz., iirst reset and then turn on the motor.

I claim:

1. In liquid dispensing apparatus of the type having means for establishing flow, a register for indicating the quantity of liquid dispensed and reset mechanism for zeroizing said register, control mechanism comprising a control handle movable to on and oif" positions corresponding to starting and stopping the ow, a spring for resisting the movement of said handle to on position, said spring adapted to be overcome by manual force applied to said control handle and tending when stressed to return said handle to its oi position, and means actuated by the zeroizing operation of saidreset mechanism to remove the resisting action of said spring on said control handle.

2. In liquid dispensing apparatus of the type having means for establishing iiow, a register for indicating the quantity of liquid dispensed and reset mechanism for zeroizing said register, control mechanism comprising a control handle movable to "on and oi positions corresponding to starting and stopping the ow, a resist member connected by a spring to said control handle for being moved therewith and adapted when held from movement to permit independent movement of said handle to its on position against the stress of said spring, a movable stop for said resist member, moving into active position upon the cessation of each dispensing operation, and means actuated by the zeroizing operation of said reset mechanism to move said stop into inactive position with respect to said resist member.

3. In liquid dispensing apparatus of the type having means for establishing ilow, a register for indicating the quantity of liquid dispensed and reset mechanism for zeroizing said register, .control mechanism comprising a control handle movable to on and o positions corresponding to starting and stopping the ilow, a resist member connected by a spring to said control handle for being moved therewith and adapted when held from movement to permit independent movement o! said handle to its "on position against the stress of said spring, a movable stop for said remember.

sist member, means operated by the movement of said control handle to ot" position to render said stop active, and means actuated by the zeroizing operation of said reset mechanism to render said stop inactive with respect to said resis 4. In liquid dispensing apparatus of the type having means for establishing flow, a register for indicating the quantity of liquid dispensed and reset mechanism for zeroizing said register, control mechanism comprising a control handle and stem xed thereto movable to on and oi positions corresponding to starting and stopping the 110W, a resist member loosely carried on said stem and connected thereto by a spring to move therewith, a movable stop for said resist member moving into active position .upon the cessation of each dispensing operation, and means actuated by the zeroizing operation of said reset mechanism to move said stop into inactive position with respect to said resist member.

5. In liquid dispensing apparatus of the type having means for establishing flow, a register for indicating the quantity of liquid dispensed and reset mechanism for zeroizing said register, control mechanism comprising a control handle and stem fixed thereto movable to on and oif positions corresponding to starting and stopping the ow, a resist member loosely carried on said stem and connected thereto by a spring to move therewith, a movable stop for said resist member, means operated by themovement of said control handle to oi position to render said stop active, and means actuated by the zeroizing operation of said reset mechanism to render said stop inactive with respect to said resist member.

6. In liquid dispensing apparatus of the type having means for establishing flow, a register for indicating the quantity of liquid dispensed and reset mechanism for zeroizing said register, control mechanism comprising a control handle and stem iixed thereto movable to on and o positions corresponding to starting and stopping the ow, a resist member loosely carried on said stem and connected thereto by a spring to move therewith, a pivoted locking beam for said resist member, a loading spring for said pivoted beam adapted to be shifted to a locking side thereof to place said beam in active position and to an unlocking side thereof to place said beam in inactive posil tion with respect to said resist member, means operated by the movement of said control handle to "on position to shift said loading spring to the locking side of said pivoted beam, and means actuated by the zeroizing operation of said reset mechanism to shift said loading spring to the unlocking side of said pivoted beam.

CHESTER T. NEAL.

Images