US2172065A - Liquid dispensing apparatus - Google Patents

Description

LIQUID DISPENS ING APPARATUS Filed June '7, 1957 5' Sheets-Sheeb l I Ewa-5i J www1/260m,

Sept. 5, 1939. R. J. JAUCH Er AL 2,172,065

LIQUID DISPENS ING APARATUS Filed June 7, 1937 5 Sheets-Sheet 2 Sept. 5, 1939.

R, J. JAUCH l' AL LIQUID DISPENSING APPARATUS Filed June 7, 1937 5 Sheets-Sheet 3 Sept. 5, 1939. R. J. JAUcH ET A1. 2,172,065

LIQUID DISPENSING APPARATUS Filed June 7, 1937 5 .Slxeets-Sl'leefI 4 f4 @my M7/M Sept 5, 1939. R. J. JAUCH ET Al. 2,172,065

LIQUID DISPENS ING APPARATUS Filed June 7, 1937 5 Shets-Shee?l 5 Patented Sept. 5, 1939 UNITED STATES PATENT OFFICE LIQUID DISPENSING APPARATUS Application June '7, 1937, Serial No. 146,824

22 Claims.

This invention pertains to liquid dispensing apparatus and more particularly to yieldable spring latch means for controlling operation of said liquid dispensing apparatus, unless said apparatus has been previously reset to a predetermined position.

It is an object of. this invention to provide a yieldable latching mechanism for controlling the liquid dispensing apparatus. unless said apparatus has been previously reset to a predetermined position.

Another object is to provide a yieldable spring latch device for liquid dispensing apparatus which physically notifies the operator if the pump has not been previously reset to a predetermined position.

Still another object is to provide a spring latch device for a liquid dispensing apparatus, the apparatus and the spring latch device being controlled by separate means for normally rendering the liquid dispensing apparatus operative or inoperative.

A still further object is to provide a spring latch device which can be readily applied to existing pumps as well as to new installations which is inexpensive to make and maintains and fullls all requirements of manufacture and service.

With these and various other objects in View, the invention may consist of certain novel features of construction and operation as will be more fully described and particularly pointed out in the specication, drawings and claims appended hereto.

In the drawings, which illustrate embodiments 0f the device andwherein like reference characters are used to designate like parts- Figure 1 is a sectional elevation of a liquid dispensing apparatus having the spring latch means applied thereto; v

Figure 2 is an enlarged fragmentary sectional elevation of one form ofL spring latch device embodying the invention, said ligure showing the parts in position where the switch is open and the registering mechanism is in maximum set-back position;

Figure 3 is an enlarged fragmentary sectional elevation corresponding to Figure 2, showing the mechanism in position where the switch is closed and the liquid dispensing apparatus is operative;

Figure 4 is an enlarged fragmentary sectional elevationcorresponding to Figure 2 showing the parts in position where the switch is closed but the registering mechanism has not beenkset to zero so that the liquid dispensing apparatus will be automatically shut 01T;

Figure 5 is an enlarged fragmentary sectional elevation corresponding to Figure 2 showing the parts in position where the switch is open, but the registering mechanism has not been reset;

Figure 6 is an enlarged fragmentary sectional elevation taken substantially in the plane as indicated by the line 6 6 of Figure 5;

Figure 7 is an enlarged fragmentary sectional elevation taken substantially in the plane as indicated by the line 'l-'l of Figure 5;

Figure 8 is an enlarged perspective elevation of the double-acting pawl provided in the modification illustrated in Figures 2 to '7 inclusive;

Figure 9 is an enlarged perspective elevation of the sliding pawl of the mechanism illustrated' in Figures 2 to 7 inclusive;

Figure 10 is an enlarged fragmentary sectional elevation through a portion of the liquid dispensing apparatus and registering mechanism therefor showing a modified form of spring latch device;

Figure 11 is an enlarged fragmentary sectional elevation through a portion of the liquid dispensing apparatus and registering mechanism therefor showing another modified form of spring latch device;

Figure 12 is an enlarged fragmentary sectional elevation through a portion of the liquid dispensing apparatus and registering mechanism therefor showing yet another modied form of spring latch device;

Figure 13 is an enlarged plan view of the latch control for the starting button, the same looking toward the left as viewed in Figure 12.

Referring rst of all more particularly to Figure 1 which shows a liquid dispensing apparatus having applied thereto one form of resilient latch device embodying the invention, the liquid dispensing apparatus 20 consists essentially of the base 22 on which the standard or casing 24 is mounted. Within the casing there is mounted the rotary pump 26 the suction side of which is connected through pipe 2l to a source of liquid supply (not shown). The pump is operated by means of. a suitable rotor adapted to be rotated by means of the pulley 28 connected through the belt 30 to the driving pulley 36 provided on the electric motor 38, the electric kmotor being controlled by means of the switch having an operating lever or control arm 42 movable to one of two positions for starting or stopping theedito be rotated by liquid passing through the meter, said meter shaft being adapted to operate -registering means 66- which, in the form shown, is provided with indicating means 68 and 10 for showing the number of gallons or the amount dispensed, and the price" thereof, the computing being accomplished by means of the variator indicated generally at 12.

The registering means is adapted to be reset through the reset shaft 14 provided with the operating or reset crank 16. A fixed hose support 18 is provided for supporting the nozzle through the nozzle guard 58 when the nozzle is in an inoperative position. For dispensing operation it is only necessary to remove the nozzle from the support and close the switch 40 through mechanism toy be later described Closing the switch Y40 starts the motor which causes rotation of the pump, whereuponiiquid is drawn from the source of supply through pipe 26, and supplied to the meter through pipe 44. The lever 60 may be operated to open the valve 62. Liquid thereupon passes through the meter out the pipe 50 through the visi-gauge 52, hose 54 and through the nozzle. Passage of liquid through the meter causes rotation of the meter shaft, which operates the variator and indicating means. Closing the valve 62 of course stops the passage of liquid through the meter, and the amount and cost of the liquid dispensed at any instant may be read.

Devices are associated with the indicating means for resiliently resisting the operation of the switch 40 to closed position unless the indicator 66 is at a predetermined or zero position at the time of the closing of the switch. One form of the device is illustrated in Figures 2 to 8 inclusive. In this form of the device a starting push button 80 is disposed below the stationary hose hook 18, said push button conveniently taking the form of a slidable plunger. Immediately above the stationary hose hook there is a stopping button 82, which may likewise conveniently take the form of a sliding plunger, and cooperating therewith is a boot 84 which may take the form of a lever pivoted at 86 to the casing and so disposed that when the nozzle is placed on the hose hook the boot will be engaged, and the stopping button'will be moved to its innermost position. This lever not only prevents Wear on the button 82 but provides leverage f or operating the same and prevents breakage of the nozzle guard and renders the stopping operation more positive.

A bell crank 88 is pivoted as at.90 with respect to the casing and is provided with the downwardly extending arm 92 adapted to'be engaged by the starting button 80, and has an upwardly extending arm 94 adapted to be engaged by the stopping button 82. The bell crank is provided with another inwardly extending arm 96 which is pivoted as at 98 to the rod 00. The rody |00 extends downwardly and is pivoted to the lever |02, said lever in turn being pivoted to the rod |04, the lower end of rod |04 being pivotaly connected as at |06 to the switch control arm 42. The connection between the arm 96 and the arm 42 through the rods |00 and |04. is such that when the arm 96 is moved in a counterclockwise direction the switch will be moved to closed position, and, conversely, when the arm is moved in a clockwise direction to the position as shown in Figure 5, the switch is opened.

The arm 94 is provided Wtih a transversely extending pin |08 `adapted tov be disposed Ain the path of the lip provided on the bracket or lever 2. The lever ||2 is pivoted as at 4 to a bracket I secured to the casing and is provided with the upwardly extending arm ll6, to which one end of the spring ||8 isconnected as at |20, the opposite end of the spring being connected as at |22 to said bracket, the spring being a contractile spring which, when extended, urges the lever ||2 in a counterclockwise direction, that is-to a position such as shown in Figure 5. 'I'he lever ||2 is provided with the inwardly extending arm |24, to which one end of the rod |26 is pivoted as at |28. The lower end of rod |26 is pivoted as at |30 to the lever |34, said lever beingA pivoted as at |36 intermediate the ends thereof to a suitable bracket |38 provided in the casing. The opposite end of the lever |34 is pivotally connected as at |40 to the rod |42. The upper end of the `rod is connected as at |44 to a cam follower 46. The cam follower |46 embraces the oiset pin or cam |48 provided on the reset shaft 14, the shaft 14 extending through the register 66 and the opposite end thereof being provided with the reset crank 16. 4

A double acting pawl |50 is pivoted at |52 to y ,the lever ||2 adjacent to the lip 0, said pawl being urged in a counterclockwise direction about the .pivot by means of a spring |54. A suitable stop |56 is provided on said pawl adapted to have limiting engagement with the stop |58 provided.

on ythe lever ||2. The double acting pawl |50 is cut away to provide a lip |60 and a projection or extension |6| and to permit downward movement of the sliding pawl |62. The sliding pawl |62 is provided with the downwardly extending offset projection |63 and in the embodiment shown is mounted for vertical sliding movement adjacent to the slot |64 provided in the bracket ||5, a suitable sliding connection |66 being provided for this purpose. The sliding pawl |62 is connected as at |68 to the rod |10 which extends downwardly through the guide |12 and is pivotally connected as at |14 to the arm 96 of the bell crank. The sliding pawl is disposed adjacent to.

a xed stop member |16, and said pawl is provided with the depending lug |18. This lug, in the embodiment illustrated in Figures 2 to 8 inclusive is `integral with the pawl |62, while in the modification illustrated in Figure 9 the depending lug |19 is a spring-pressed member normally urged in a clockwise direction about the pivot |66 by the spring |8| but limited in its movement to a substantially vertical position by the shoulders |83 and |85 on the pawl and depending member.

Assuming the liquid dispensing apparatus is inoperative, that is-with the switch 40 in open position, and assuming that the registering mechanism66 has not been reset to zero, then the re- If the operator removes the nozzle from the stationary hose hook and pushes the starting button 80 inwardly,'the bell crank 88 will be moved in a counterclockwise direction 'about the pivot 90, causing the sliding pawl |62 to be moved upwardly to release the portion |63 from engagement with the lip |60. The pin |08 will engage the lip 0, and continued counterclockwise movement of the bell crank will cause a clockwise movement of the lever ||2 against the action of the spring ||8. However, the projection |6| will continue to lie below the stop |16 so that when the starting button is released by the operator the spring will cause the lever ||2 to be moved in a counterclockwise direction and consequently the bell crank to be moved in a clockwise direction which will open the switch 40 through upward movement of the rod |00. This action of the liquid dispensing apparatus will notify the operator that he has neglected to reset the registering mechanism to zero before attempting to serve liquid.

The operator will then rotate the shaft 14 `by the reset handle 'I6 moving the cam or cset |48 through its maximum position as shown in Figure 2. At the maximum position as shown in Figure 2, the rod |42 will be moved upwardly, causing a counter-clockwise movement of the lever |34 about the pivot |36, this movement causing a clockwise movement of the lever 2 about the pivot ||4 through the rod |26. This movement of the lever ||2 causes the lip |60 to be moved out of the path of the projection |18, and the projection |6| will be moved to a position where it may engage the stop |16 when the crank 16 has been movedx to full reset position.

In the full reset position, of course, it is to be understood that the sliding pawl |62 is in its lowered position, such as shown in Figure 2. When the full reset position has been reached the operator may then depress the starter button 80 as shown in Figure 3, causing the bell crank 88 to be moved in a counterclockwise direction about the pivot 90. This movement of the bell crank will cause the stopping button 82 to be moved outwardly to cause the boot 84 to obstruct the stationary hose hook 18. The bell crank will remain in the position illustrated in Figure 3, as the pin |08 will not have contacted the lip as said lip will be moved out of the path of movement of the pin |08 by the resetting operation. The lip ||0 will be maintained out of obstructed position as the projection |6| will be behindV and will 'engage the stop |16 to hold the lever I2 against rotation b y the spring |8. 'Ihe pawl |62 will have been'moved upwardly by the rod |10 where the projection |18 will overlie the widened part |5| of the double acting pawl |50.-

After dispensing operation is completed the nose nozzle may be returned to the stationary hose hook. When the nozzle is placed on the hose hook, the boot 84 will move the stopping button 82 inwardly to cause the bell crank 88 to be r moved in a clockwise direction about the pivot 80, moving the rod |00 downwardly to open the switch and moving the rod downwardly, thereby lowering the pawl |62. Downward movement of the pawl |62 causes the projection |18 to engage the widened portion |5| of the double actingpawl |50, and continued downward movement of the pawl causes the projection |6| to be moved below the stop |16, to thereby permit the contractile spring ||8 to move the lever ||2 to the position shown in Figure 5, in which position it will be necessary to repeat the cycle of reset and operation before liquid can be dispensed from the liquid dispensing apparatus in the intended manner.

Referring now to the modification illustrated in Figure 10, the pump casing 200, similar to the liquid dispensing apparatus casing 24, is provided with the pump, and metering and discharge mechanism as described in Figure l. The registering mechanism 202 is provided with the reset shaft 204 having a cam 206 mounted thereon. The stationary hose hook 208 is suitably secured with respect to the casing and may be connected to a bracket 2 l0. The starting button or plunger 2|2 is disposed below the' stationary hose hook and is adapted to be slid inwardly in order to start operation of the pump or liquid forcing means. rThe stopping button 2|4 is disposed above the hose hook and is adapted to be moved to its inwardmost position to render the liquid forcing means inoperative, a suitable boot 2|6 being pivoted as at 2| 8 with respect to the casing and overlying the stopping button, said boot extending downwardly adjacent the stationary hose hook and being adapted to be engaged by the nozzle guard when the nozzle is placed on the hook to move the stopping button to its innermost position.

The bell crank 220 is pivoted as at 222 to the bracket 2|0 and is provided with the inwardly extending ann 224 looselyconnected as at 226 to the switch control rod 228, said rod being similarto the rod 00, and extending downwardly and being connected to the operating switch. The bell crank is also provided with the arm 230 adapted to have engagement with the starting button 2|2, and said bell crank is provided with the upwardly extending arm 232 pivotally connected as at 234 to the slidable plunger 236, said plunger having a connecting rod 238 disposed between said plunger and the end guide member 240. The plunger 236 and the guide member 240 are adapted to have sliding support in the spaced bearings 242 and 244, and there is provided a shoulder member 246 forming an abutment Ior one end of the spring 248. The other end of the spring 248 is adapted to engage one side of the latch shoulder 250. The support 2|0 is provided with the bracket 252 to which the latch member 254 and the latch control member 256 are pivotally and frictionally mounted as at 258. A spring 260 is provided to supply the frictional mounting. The outer end of the control member is adapted to be engaged by the cam 206, and the other end is provided with the lip 262 underlying the latch 254, said control member 256 being provided with the spring 264 secured thereto as at 266 and engaging the latch member as at 268.

In the operation of this form of the device, assuming that the registering device 202 has not been reset to zero, the latch member 254 will be disposed in its lowermost position. If then the starting button 2|2 is moved inwardly to rotate the bell crank in a clockwise direction to close the switch. the sliding member 236 will be moved toward the right as viewed in Figure l0, causing the spring 248 to be compre-sed due to engagement of the members 250 and 254 so that when the operatory releases the starting button the spring 248 will move the member 236 toward the left as viewed in Figure l0 to open the switch. This operation gives notice to the operator that the registering mechanism has not been reset to zero. Accordingly, he will rotate the reset shaft 204 to reset the registering mechanism to zero.

During the resetting operation the cam 206 will be moved to engage the control member 256 to move the control member 256, and consequently the latch member 254, through the shoulder 262 in a counterclockwise direction about the pivot 258, whereupon the latch member is moved out of the path f movement of the member 250. The frictional mounting of the members 256 and 254 prevents the latch member from dropping back to the position illustrated in Figure 10 where the path of the member 250 is obstructed. Accordingly, starting button 2I2 can be operated or moved inwardly to close the switch, and the member 236 is then free to be moved toward the right as viewed in said ligure to permit-continued operation of the liquid dispensing apparatus.

When the members 236, 238, 240 and 246 are moved toward the right, the member 246 will e gage the control member 256 and move it pwardly, causing the spring 262 to tend to ove the latch 254' downwardly, but it will not be moved downwardly to obstructing position with respect to the member 250 until the switch has been moved to open position, after which the cycle of operation must be repeated before the switch can again be unobstructedly closed.

In the construction shown in Figure 1l, a similar form of resilient latch,'interlock is provided shown, however, in conjunction with a different form of switch control. In this modification the liquid dispensing apparatus casing 300 also is provided with the pump mechanism as illustrated in Figure 1, the registering mechanism 302 being provided with the reset shaft 304 having an operating cam 306 thereon. The stationary hose hook 308 is fixed with respect to the casing, and a switch control `member 3I0 is pivotally mounted as at 3I2 in a suitable bracket 3|4, the control member 3I0 being disposed below the supporting shoulder 3I6 for the nozzle when the switch is open. The switch control member 3I0 is provided with the inwardly extending arm 3l8 which is pivotally connected as at 320 to the switch control rod 322, said switch control rod being similar to the switch control rod 228. A latching shoulder 324 is loosely or slidably mounted on the switch control rod 322 above the connection 320 and forms an abutment for one end of the coil spring 326, the opposite end of said spring 326 abutting the member v328 ixedly mounted on the switch rod 322.

A bracket 330 is connected to the bracket 3i4, and the latch member 332 and the latch control member 334 are pivotally and rictionally connected to the bracket 330 as at 336, the spring 338 supplying the'friction therefor. The latch control 334 is provided with the lip 340 underlying the latch 332, and said latch control member is provided with the spring 342 secured thereto as 'at 344 and engaging the latch member as at 346. The opposite end 348 of the latch control member is adapted to be controlled by the cam 306.

In the operation of this form of the device, assuming the registering mechanism 302 has not been reset to zero, should the nozzle be removed from the hose hook 308 and the switch control member 3I0 raised to close the switch, the latch 332 will be engaged by the shoulder 324, and the spring 326 will be compressedl so that when the operator releases the switch control member 3I0 for the purpose of dispensing liquid, the spring 326 will raise the switch control rod 322 to open the switch and render the liquid dispensing apparatus inoperative. Resettingl of the register 302 will cause the cam 306 to move the latch control member 334 and the latch 332 through the shoulder 340 in a clockwise direction', whereupon the latch will be moved out of the path of movement of the member 324. Raising the switch control member 3I0 will cause the shoulder 324 to be moved past the latch 332, whereupon the switch will be unobstructedly closed. Downward movement of the member 328 will move the latch control member 334 is a counterclockwise direction, whereupon the spring 342 will urge the latch member 332 in a counter-clockwise direction, but this will not be effective until the member 324 is moved above the latch member, that is, the switch is moved to open position, so that the cycle of operation must be repeated before additional liquid can be dispensed.

yReferring now to the construction illustrated in Figure 12, a modification of the form of mechanism describedA in Figure 10 is provided. The liquid dispensing apparatus casing 400 is provided with the mechanism as described in Figure 1, the registering mechanism 402 being provided with the reset shaft 404 provided with the cam- 406. The cam 406 is adapted to have engagement with one end of the latch control member 408. The latch control member 408 is provided with the shoulder 4l0 underlying the latch member 4l2 and has a spring 4I3 engaging the latch 4|2. The latch member 4I2 and the latch control member 408 are pivotally and frictionally connected as at 4|4 to the bracket 4I6, a suitable spring 4|8 providing the friction. The brocket 4l6 is fixed with respect to the casing 400 and the stationary hose hook 420 may be connected to said bracket. The stopping button 422 is disposed above the stationary hose hook and the boot 424 is pivotally supported as at 426 above said stopping button, and extends downwardly to a point "adjacent the stationary hose hook so that said boot may be engaged by the nozzle to move the stopping button 422 to its innermost position where the switch is open or inoperative. The stopping button 422 is adapted to engage the slidable member 428 provided with the latching shoulder 430, said shoulder forming an abutment for the coil spring 432, the opposite end of said coil spring being seated on the member 434 provided on the sliding member 436.

The members 428 and 436 are connected by means of the rod 438, and said members are4 one arm 446 of the bell crank 448, said bell crank being pivoted as at 450 to the bracket 4I6. The bell crank is provided with an arm 452 pivotally connected as at 454 to the switch control rod 456, and the arm 452is provided with a latch control projection 458 adapted to engage the arm 460 of the latch 462, said latch being pivoted as at 464 to the support 466 and being provided with the depending locking arm 468. A swinging latch member 410 is pivoted as at 412 to the bracket 466 and is adapted lto conceal and reveal an aperture 414 provided in the'bracket 466, the locking arm 468 locking the latch in a. position to reveal the aperture 414. 'Ihe swinging latch I 410 is pivotally and loosely connected as at 416 to the rod 418 which extends upwardly and is 'Ihe'bell crank 448 is provided with the depending arm 482 which slidingly embraces a rod 484, Said rod extending through the stopping button 486. The somewhat sharpened end 488 of said rod is normally flush with the end of the button 486 when the pump is inoperative, or when it is operated in the intended manner. The button 486 is hollow and provided with the spring 490, one end abutting the button, and the other end abutting a stop 492 xedly mounted on -the rod 496.

Assuming the pump to be inoperative, and assuming that the registering mechanism has not been reset to zero, should the operator remove the nozzle from the hose support and move the starting button 486 inwardly, the rod 488 will protrude due to engagement of the rear end of the rod with the swinging latch 480, thus notifying the operator that the device has not been reset as the operators finger will be pricked by the end of the rod 486. The rod 488 is also of a size and the end of the button of such shape that it will be extremely diilicult to operate the button unless the rod moves with it. Should the operator persist in moving the starting button inwardly, the bell crank 446 will be moved in a. clockwise direction, causing the shoulder 430 to engage the latch 412 compressing the spring 432 so that when the operator releases the button 486 for dispensing operation, the spring 432 will elongate, moving the bell crank in a counterclockwise direction to open the switch. The operator will then reset the registering mechanism 402 to zero by rotating the shaft 404, causing cam 406 to move the latch control member 408 in a counterclockwise direction. Upward movement of the latch control member 408 will move ythe rod 418 downwardly, rotating the swinging latch 410 to reveal the aperture 418, and the arm 468 will lock the latch 410 in position where the hole is revealed.

The counterclockwise -rotation of the latch control member 408 moves the latch member 4l2 out of the path of movement of the shoulder 430 so that the starting button 486 can be moved inwardly, together with the rod 488 which will enter the aperture 414, and the members 426, 432, 438 and 436 will be moved as a unit toward the right` as viewed in said figure. Movement of said members toward the right will cause the member 434 to move the latchA control member 408 upwardly, causing the spring 4I3 to tend to move the latch member 4|2 downwardly, but thiswill not be accomplished until the pump has been rendered inoperative, that is, the shoulder 430 has been moved to the left of the latch member. The latch member 4|2 will then fall into the path of movement of the member 430, moving the swinging latch member 410 to conceal the aperture 414. In the meantime, the rod 484 has been moved out of the aperture by movement of the bell crank 446 in a counterclockwise direc'- tion, also causing the starting button 486 to be protruded. 'I'he cycle of operation can then be effected after the registering mechanism has been reset to zero.

It is to be understood that we do not wish to be limited by the exact embodiments of the device shown, which are merely by way of .illustration and not limitation as various and other forms of the device vwill of course be apparent to those skilled in the art without departing from the spirit of the inventionv or the scope of the claims.

'1. lIn a device of the character described, the combination of liquid forcing means, a meter connected to said liquid forcing means, dispensing means connected to said meter, control means for the liquid forcing means, registering means operatively connected to said meter for indicating the measurement of liquid passing through said meter, reset means for said registering means including a reset shaft, operating means for said control means including a pivoted bell crank having a plurality of arms, one of said arms being connected to said control means, a sliding pawl connected to said bell crank, a pivoted lever having a pawl pivoted thereto, said pawl being urged toward said first named pawl, resilient means connected to said pivoted lever urging said lever to engage said bell crank to move said bell crank to render said control means inoperative, and stop means engageable by said second named pawl when said registering means is in a predetermined position to prevent movement of said pivoted lever when said control means is operated to start said liquid forcing means.

2. In a device of the character described, the combination of liquid forcing means, a meter connected to said liquid forcing means, dispensing means connected to said meter, control means for the liquid forcing means, registering means operatively connected to said-meter for indicating the measurement of liquid passing through said meter, reset means for said registering means including a reset shaft, operating means for said control means including a pivoted member, said member being connected to said control means, a sliding pawl connected to said pivoted member, a pivoted lever having a pawl pivoted thereto, said pawl being urged toward said rst named pawl, resilient means connected to said pivoted lever urging said lever to engage said pivoted member and to render said control means inoperative, and stop means engageable by said sec- ,ond named pawl when said registering means is in a predetermined position to prevent movement of said pivoted lever when said control means is operated to start said liquid forcing means.

3. In a device of the character described, the combination of liquid forcing means, a meter connected to said liquid forcing means, dispensing means connected to said meter, control means for the liquid forcing means, registering means operatively connected to said meter for indicating the measurement of liquid passing through said meter, reset means for said registering means, and means for resiliently resisting operation of said control means until said registering means has been reset to a predetermined position.

4. In a device of the character described, the combination of liquid forcing means, a meter connected to said Yliquid forcing means, control means for the meter, dispensing means connected to said meter, a stationary support for said dispensing means, registering means operatively connected to said meter for indicating the measurement of liquid passing through said meter, reset-means for said registering means including a reset shaft, operating means for said control means, a movable member connected to said control means, a slidable plunger disposed below said support adapted to be moved to operate said movable member, a slidable plunger disposed adjacent and above said support adapted to be movable to operate said movable member, said plungers being inoperative when said dispensing means is in supported position, and

means interposed between said reset means and control means for selectively affecting operation thereof.

5. In a device of the character described, the combination of liquid forcing means, a meter connected to said liquid forcing means, control means for the meter, dispensing means connected to said meter, a stationary support for said dispensing means, registering means operatively connected to said meter for indicating the measurement of liquid passing through said meter, reset means for said registering means includ-k `ing a reset shaft, operating means for said control means, a movable member connected to said control means, a slidable plunger disposed below said support adapted to be moved to operate said movable member, 'a slidable plunger disposed adjacent and above said support adapted to be movable to operate said movable member, said plungers being 'inoperative when said dispensing means is in supported position, and movable means overlying said second named plunger and disposed adjacent said support, said movable means being engageable by said dispensing means when said dispensing means is being moved to supported position to cause said movable means to move said second named plunger.

6. In a device of the character described, 4the combination of liquid forcing means, a`meter connected to said liquid forcing means, control means for 'the meter, dispensing means connected to said meter, a stationary support for said dispensing means, registering means operatively connected to said meter for indicating the measurement of liquid passing through said meter, reset means for said registering means including a reset shaft, operating means for said control means, a movable member connected to said control means, a pair of slidable plungers disposed adjacent saidV stationary support adapted to be moved to operate said movable memberpone of said plungers moving said movable member to render said control means operative and the other of said plungers moving said movable member to render said control means inoperative, and means operatively connected to said reset shaft and said plungers and operated by said`reset shaft for moving said control means to inoperative position when said first named plunger is released by an operator after moving said first named plunger to operate said control means unless said registering means is in a predetermined position.

7. In a device of the character described, the combination of liquid forcing means, a meter connected to said liquid forcing means, dispensing means connected to said meter, control means for the liquid forcing means, registering means h operatively connected to said meter for indicating the measurement of liquid. passing through said meter, reset means for said registering means including a reset shaft, operating means for said -control`means, and resilient means operatively interposed between said reset shaft and said operating means for resiliently resisting movement cating means to initial position, and means to vto return said portion to initial position, a lever,

a switch, operative connections between the lever and switch, resilient means to resistingly but resiliently maintain said lever in switch open position, and means carried by said portion adapted at initial position of the registering means to render ineiiective said retaining means;

10. In liquid delivery apparatus, the combination of a meter and indicating means operated thereby, said indicating means having mechanism for resetting the indicating means to zero position, means for delivering liquid through the meter, actuating means for starting and stopping the delivery means, and means including a resilient member interconnecting the resetting mechanism and the actuating means to return the actuating means to inoperative position unless the'indicating means is at zero position when the delivery means is started.

11. In a fluid dispensing apparatus, the combination of power means for delivering fluid therefrom, indicating means for determining the quantities of fluid delivered, and means for controlling said power means Whereby the power means is moved from an operative to an inoperative position if the indicating means is in an other than initial position when said power means is initially operated.

l2. In a fluid dispensing apparatus, the combination of power means for delivering duid, indicating means for determining the' quantity of uid dispensed by said apparatus, control means for said power means, cam means asociated with said indicating means for rendering said control means operable for initial operation of said power means Whensaid indicating means is in a predetermined position, and means associated with said cam means and said control means for yieldingly rendering said control means inoperative unless said indicating means isin said predetermined position.

13. In liquid delivery apparatus, the combination of a meter, indicating means operated bysaid meter and having mechanism for resetting the same to zero position, means for eiecting liquid flow through the meter, electric switch mechanism controlling operation of said liquid i'low effecting means, and interconnecting means between said switch mechanism and indicating means resetting mechanism for returning the switch mechanism to inoperative position unless said indicating means has been set to zero before said switch mechanism has been rendered operative.

14. In liquid delivery apparatus, the combination of a meter, indicating means operated by said meter and having means for resetting the indicating means to zero position, means for delivering liquid through the meter, actuating means /for starting and stopping the vdelivery means, said resetting means and actuating means being interconnected to yieldingly resist operation of the actuating means after completion of a liquid delivery until the resetting means has been actuated.

15. In a liquid dispensing device, the combination with a pump having a manually operable control for starting and stopping the flow of uid therethrough, a meterhaving mechanism operated by the flow of fluid from the pump, indicating means operated by the meter mechanism, manually operable resetting means for the indicating means, and means interconnecting the means for the reset mechanism and the pump, control whereby to yieldingly resist pump-starting movement of the pump control until the manual actuating of the resetting means.

16.'In a liquid delivery apparatus, the combination of a meter, indicating means operated by the meter and having resetting mechanism, a pump, manually actuated means to start and stop the pump, a manual actuator for the resetting mechanism, and means connecting the resetting mechanism and the pump actuator to yieldingly resist starting movement of the pump actuator until actuation of the resetting means.

17. In a liquid dispensing apparatus, the combination of flow establishing means, an electric swtch for controlling operation of said flow establishing means, a meter for measuring liquid dispensed from said liquid dispensing apparatus, an indicator operated by said meter for indicating dispensing of liquid from said liquid dispensingv apparatus, said indicator having reset means including a biased member, means for opening and closing said electric switch, said means including slidable stopping and starting buttons, a bell crank interposed between said buttons and adapted to be moved thereby, a connection between said switch and said bell crank, a slidable member connected to one arm of said bell crank and engaging said stopping button, a spring supported on said slidable member and having a latch shoulder, a pivoted latch adapted to be engaged by said shoulder, a pivoted latch control member movable by said cam and having engagement with said latch for moving said latch out of the path of movement of said shoulder, resilient means between said latch and latch control member for urging said latch toward the path of movement of said shoulder, and a member carried by said slidable member to move said latch control member to a position where said last named spring urges said latch toward said path of movement of said shoulder.

18. In a liquid dispensing apparatus, the combination of flow establishing means, an electric switch for controlling operation of said flow establishing means, a meter for measuring liquid dispensed from said liquid dispensing apparatus, an indicator operated by said meter for indicating dispensing of liquid from said liquid dispensing apparatus, said indicator having reset means including a biased member, means for opening and closing said electric switch, said means including, a pivoted member operable externally of said liquid dispensing apparatus, a slidable member connected to said switch, a fixed member disposed on said slidable member, a slidable latch shoulder spaced from said xed member, a spring interposed between said shoulder and xed member, a pivoted latch adapted to be engaged by said shoulder, a. pivoted latch control member movable by said cam and having engagement `with said latch for moving said latch out of the path of movement of said shoulder, resilient means between said latch and latch control member for urging said latch toward the path of movement of said shoulder, said fixed member being adapted to move said latch control member to a position where said last named spring urges said latch toward said path of movement of said shoulder.

19. In liquid dispensing apparatus having flow establishing means, control means therefor, and liquid metering means, in combination, indicating means movable by the liquid metering means from an initial position' in proportion to the `amount of liquid passed through the metering means, means to return the indicating means to initial position, and means associated with said control\ means for resistingly indicating that said indicating means has not been reset to a predetermined position, said means including a member moved with the control means when said indicating means has been reset to said predetermined position, said member being rendered stationary if said indicating means has not been so reset.

20. In liquid dispensing apparatus having flow establishing means, a register for indicating the quantity of liquid dispensed at each dispensing operation and reset mechanism for zeroizing said register, the combination therewith of controlling mechanism for the ilow establishing means comprising means under hand control for causing said flow, automatic means tending to stop said llow, and manually controlled hold-on means for preventing theoperation of said automaticstopping means, said hold-on means comprising a latch actuated by operation of the reset mechanism.

2l. A switch control device for fluid pumps comprising the combination With a motor starting switch and a computing mechanism, of a rocker member operatively connected with the motor switch, a starting plunger adapted to engage and operate said rocker member to close the switch, a latch mechanism adapted to hold said starting plunger in the switch-operating position, means for releasing said latch from its holding engagement with said plunger and rocker member, and means operated by the resetting of the computing mechanism for resetting said latch mechanism. u

22. A switch control device for fluid pumps comprising the combination with a. motor starting switch and a computing mechanism, of means for automatically opening the motor switch, manual means for operating said openi CERTIFICATE OF ACQPRPIION.y l Patent No; 2,172,065. n v september 5, 1959.

ROBERTJ.l MUCH, Er AL. l

It is hereby certifiedA that error appears in the printed specification of the above numbered patentrequiring correction as follows: Page LL, second column, line l2, for the words "member 55h, is'" read member 53h in; line 55, for "'brocket" read bracket; page 5, ysecond column, line 6l, and .page 6v, first column, lines 7 and 5l, claims 1i, 5 and 6 respectively, for "meter" read liquid forcing meansjand that the said Letters lPatent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.,

Signed and sealed this 5th day of' December, A. D. 1959.

' Henry Van Arsdale, l (Seal) Acting Commissioner of Patents.

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