US2874874A

US2874874A - Switch and register control mechanism

Info

Publication number: US2874874A
Application number: US606342A
Authority: US
Inventors: Markoff Nicholas
Original assignee: Tokheim Corp
Current assignee: Tokheim Corp
Priority date: 1956-08-27
Filing date: 1956-08-27
Publication date: 1959-02-24
Anticipated expiration: 1976-02-24

Description

Feb. 24; 1959 N. MARKOFF 2,874,874

SWITCH AND REGISTER. CONTROL MECHANISM 6 Sheets-Sheet 1 Filed Aug. 27, 1956 NICHOLAS MARKOFF IN VEN TOR.

BYW

AT TO R N E Y Feb. 24, 1959 N. MARKOFF 2,874,874

SWITCH AND REGI'S'IER CONTROL MECHANISM 6 Sheets-Sheet 2 Filed Aug. 2'7, 1 956 NICHOLAS MARKOFF INVENTOR.

ATTORNEY Feb. 24, 1959 NQMARKOFF 2,874,874

SWITCH AND REGISTER CONTROL MECHANISM Filed Aug. 27, 1956 6 Sheets- Sheet 3 INVENTOR. NICHOLAS MARKOF'F BY fi/fM/W/m ATTORNEY NICHOLAS MARKOFF INVENTORL ATTORNIEY Feb. 24, 1959 N. MARKOFF 2,87 4

SWITCH AND REGISTER CONTROL MECHANISM Filed Aug. 2?, 1956 6 Sheets-Sheet 5 224 H (7! H I 1 figs NICHOLAS MARKOFF' INVENTOR.

ATTORNEY N. MARKOFF SWITCH AND REGISTER CONTROL MECHANISM 7 Feb. 24, 1959 6 SheetsSheet Filed Aug. 27, 1956 NICHOLAS MARKOFF INVENTOR.

ATTORNEY Jnited States atnt SWITCH AND REGISTER CONTROLMECHANISM Nicholas Markoff, Fort Wayne, Ind., a ssignortoToiiliein1 'Corporatiom'Fort Wayne, 1nd,, a corporation of Indiana Application August 27, 1956, Serial No. 606,342 26 Claims. Cl. 222-35) This invention, relates to aswitch and register control mechanism. More specifically it relates to a mechanism for the usual filling station dispenser which has a nozzle support and which is provided with a single lever and a mechanism operable thereby which resets the register and thereafter closes a motor switch uponmotion of the lever through a full stroke in one direction. The lever then moves in a reverse direction far enough to prevent supporting the nozzle on its support. Further movement of the lever in a return direction opens the motor switch, conditions the resetting mechanism of the register for a subsequent resetting operation and clears the nozzle support to receive the nozzle. In some cases, the mechanism is also connected to open and close a valve simultaneously with the closing and opening of the switch.

It is an object of the invention to provide a mechanism which will perform the described functions, in the required order, in a single cycle.

Another object of the invention is to provide a structure which is rugged and positive in action.

A further object of the invention is to provide an operating lever and a nozzle support which are so arranged that the nozzle'cannot be mounted on the support unless the lever occupies the power off position.

These and other objects will become apparent from a study of this specification and the drawings which are attached hereto, made a part hereof and in which Figure 1 is a partial elevation of a service station dispenser employing the novel structure. 7

Figure 2 is an expanded respective viewof the register mechanism in the normal or inactive condition of the dispenser.

Figure 3 is an elevation of the register clutch actuat- .ing mechanism.

Figure 4 is an elevation showing the actuating lever in the various positions which it occupies at the conclusion of certain phases of its cycle.

Figure 5 is a side elevation, with parts in section, showing the mechanism connecting the operating lever and the register control mechanism.

Figure 6 is a front elevation of the structure of Figure 5 showing the various parts in their fully actuated positions in dashed lines.

REGISTER AND REGISTER CONTROL SYSTEM (Figures 1, 2 and 3) Referring first to Figure l, the numeral 1 represents, generally, a cost computing type of filling station dispenser which includes a register 3having gallons dialsS, money dials 7 and price per gallon dials 9. The register has a similar set of dials on the face opposite to theone shown.

The details of the register are not important to theunderstanding of the invention and are fully disclosed in the patent to Harvey N. Bliss, Patent Number 2,814,444 issued November 26, 1957. The register is connected to be driven by the usual meter incorporated in'the dispenser so that dials 5 will indicate the total gallons dis- 2 pensedin a transaction and dials 7 will indicate the cost of the sale which is a product of the numbers indicated on dials Sand 9.

It is necessary to reset theregisters 5 and 7 to zero before delivering fuel in a succeeding dispensing operation or transaction and this is accomplished prior to the closing of the switch 6 which controls theusual pump motor 2 which may be included as a part of the dispenser" or it may be located. at a point remote therefrom; In-the latter case a control valve 4 is mounted in the dispenser and is operated simultaneously with the switch as indicated above.

The register mechanism will be first explained so that the functions will be understood and the movements required to perform the functions can be outlined. Thereafter the mechanism for producing the movements will be explained.

Referring first to Figure 2, the shaft 11 is the reset drive shaft for the registers 5 and 7 of register 35 while the shaft 13 serves a similar purpose for the registers on the opposite side of the dispenser. The shafts are connected to be driven by the gears 15 and 17 respectively which are in mesh with a common gear 19. The latter has a ratchet 21 fixed to it. Gear 19 is rotatable with respect to the shaft 23. A holding pawl 25, is pivoted at 27 on the frame 770i the computer and is urged into engage ment with the ratchet 21 by a spring 29.

A control element or ratchet disc 31 is provided with a hub 33 which is fixed to shaft 23. The disc carries three peripheral teeth 35; 3'7, 39 on one side and a single tooth 41 on the opposite side, the latter being formed by notching the disc at 43.

A resetting member or cam disc 45 is rotatably mounted on an extension of the hub 33 which projects through the disc 31 for movement between an initial (spring loaded) position and a reset position which it occupies after resetting of the register has been completed.

An actuating pawl 49 is pivotally mounted on disc 45 by means of a pin 51 andis urged into contact with the ratchet .21 bynieans of a spring 53 which is hooked at one end in a projection 55 on the pawl and at the other end in a projection 57 on the cam disc 45,

A cocking pawl 59 is pivotally mounted at 61 on the cam disc 45 in a position to engage the tooth 41 and it is urged into engagement with said tooth. by means of a spring 63 which-is connected at one end to a projection 65 on thepawl and at the other end to a pin 67 fixed in the cam disc. The pawl 59 and tooth 41 serve as a releasable means to connect said element to drive said memher in the spring loading direction.

The cam disc 45 carries projection 69 in which is mounted a grooved stud 71. A strong tension spring 73; is hooked at one end in the groove of the stud and at the other end to a fixed, grooved stud 75 on the frame 77 of the register so that the disc is urged in a clockwise direction (Fig. 2) by the spring;

A dashpot mechanism 79 has its cylinder 81pivotally mounted at one end on a stud 47 on the frame and the piston rod 83 is pivotally connected to the cam disc at 85. The dash pot is constructed so that the piston rod will move freely out of the cylinder but resists motion in the opposite direction so that it will slow the rotation imparted to the disc by the spring 73.

The cam disc 45 has a first cam 87 formed on its periphery which is adapted to engage a pin 89 which extends from a projection-91 on pawl 25 into the path of the cam. When the cam disc moves counterclockwise (Fig. 2) as will be described, the cam will lift the pawl 25 out of holdingengagement with ratchet 21.

Pivotally mounted in the frame of the register is-a shaft 93 and pivotally mounted on'the shaft is apaw1 9 5 which is positioned to move into engagement with the

teeth

35, 37 and 39. The pawl and teeth serve as latch means to hold the ratchet disc in certain of its rotative positions. The pawl carries a projecting arm 97 to which is connected one end of a spring 99, the other end of the spring is hooked on a pin set in the frame.

A trip pawl 103 has its hub 105 pinned to shaft 93 and has a bent over end 107 which overlies the tail 109 of cocking pawl 59. A downwardly extending arm 111 of the trip pawl is connected to one end of a spring 113 the other end of which is hooked on a pin. The pawl is thus urged in a counterclockwise direction by the spring 113, away from the tail 1.09. This motion is limited by contact between a stop pin 115 mounted on the pawl which contacts the arm 97 of pawl 95.

The upper end of pawl 95 carries a pin 117 which projects over the periphery of the cam disc 45 in a position to be actuated by the second cam 119 on the disc 45 upon clockwise rotation thereof so that the pawl 95 will be moved out of engagement with the tooth 35 as will be explained. The pin 117 is also engaged by the stop projection 121 on the cam disc to limit the clockwise rotation thereof under the action of the spring 73.

Referring now to Figure 3, the shaft 23 runs entirely through the register 3 and has fixed to the protruding end thereof the cam 123. A slide bar 125 is slidably mounted for endwise translation in

guide lugs

127, 129 formed on the frame. The bar is slotted at 131 to clear the shaft 23.

A pair of

rollers

133, 135 are rotatably mounted on

suitable studs

137, 139 set in the bar and ride on opposite portions of the cam when the line joining the points of contact AA or B-B is aligned with the line joining the centers of the rollers. Thus in at least these two positions, the bar is held against endwise displacement.

As shown in Figure 3, the points AA are aligned with the roll centers and the cam occupies this position when the ratchet disc occupies the position shown in Figure 2. The points BB are aligned with the roll centers when the ratchet disc 31 occupies its normal running position which will be described below.

The bar 125 is provided with openings 167, 169 which receive the ends of

levers

163, 165. The latter are fixed to

shafts

151, 153 mounted in inclined, upwardly converging positions on the computer frame by means of bearings 152.

Gear sector s 155, 157 are mounted on opposite ends of shaft 151 while similar sectors 159, 161 are mounted on shaft 153. These sectors mesh with

racks

141, 143, 145 and 147 respectively of the clutch operating shafts.

When the cam moves from the position shown in Figure 3 to the position in which the points BB align with the roll centers, the portion of the cam on the right hand side, between points A and B acts on roll 133 to move the bar to the right whereas when the cam moves from the latter position to the position of Figure 3, the portion of the cam on the left side acts on roller 135 to move the bar to the left.

The bar 125, in the position shown in Figure 3 has rotated the

levers

163 and 165 and associated parts in a counterclockwise direction when viewed from the top, and has pulled

clutch shafts

145, 147 outwardly toward the viewer and has forced

shafts

141, 143 inwardly away from the viewer. In this condition the indicator wheels of all of the registers have been declutched from the drive shaft and drive trains which normally drive them in an advancing direction as the meter rotates and they have been clutched to the reset drive trains not shown which are operated by the shafts 11 and 13 of reset gears 15 and 17.

When the bar occupies its opposite position, all of the indicator wheels of the registers have been declutched from the reset drive mechanism and have been clutched to the meter driven mechanism.

Operation The cycle of the register and register control system, starting with the parts in the Figure 2 and Figure 3 positions is substantially as follows:

1) The trip pawl 103 is rotated clockwise to cause the bent end 107 to contact the tail 109 of cocking pawl 59 and to thereafter rotate it counterclockwise out of engagement with tooth 41.

(a) The pawl 103 is restored to its initial position by spring 113.

(2) This frees the cam disc 45 which is rotated clockwise from its initial to its reset position by spring 73.

(a) During this rotation of the cam disc, the reset pawl 49 rotates its ratchet 21, the reset gears 15, 17, and 19 and since the indicator dials are clutched to the reset drive, they are reset to zero.

([2) Near the start of the rotation of the cam disc, the cam 87 disengages pin 89 so that holding pawl 25 will engage its ratchet 21 but it will ride over the teeth thereof so long as the ratchet is moving clockwise.

(0) Near the end of this movement of the cam disc, cam 119 actuates pin 117 and withdraws pawl from tooth 35 to unlatch the control element.

(d) Thereafter stop 121 strikes pin 117 to terminate rotation of the cam disc in its reset position.

(e) The motion of the cam disc is slowed by dashpot 79.

(3) The ratchet disc or control element 31 is thus freed for clockwise rotation past a point in which tooth 41 and pawl 59 would reengage.

(a) As this rotation is accomplished, to a position established by stop means (not shown), the cam 123 (Figure 3) will rotate counterclockwise to move the bar to its right hand position. This declutches the register dials from the reset train and clutches them to the meter drive so that any movement of the meter will advance the registers.

(b) For reasons which will become apparent, the ratchet disc 31 is then preferably rotated counterclockwise until tooth 41 thereof engages the cocking pawl 59. The corresponding movement of earn 123 does not disturb the clutches.

(4) When the registering function is completed, the ratchet disc or control element 31 is rotated in a counterclockwise direction.

(a) Since the tooth 41 thereof and cocking pawl 59 are engaged, the cam disc or resetting member 45 will also be rotated in the same direction to its initial position.

(b) The actuating pawl 49 which is carried by cam disc 45 rides idly over the teeth of ratchet 21 which is held against counterclockwise rotation by pawl 25.

(c) The cam 119 moves from under pin 117 so that pawl 95 will be reengaged with ratchet disc 31 by spring 99 so as to hold it against clockwise rotation beyond the position of effective contact between the pawl and the

nearest tooth

39, 37 or 35.

(d) The clutch cam 123 is also rotated to move the bar 125 to the Figure 3 position so that the registers are declutched from the meter and are clutched to the reset drive train.

(2) As the cam 87 moves under pin 89, the pawl 25 is disengaged from ratchet 21 which is now held by the reset pawl 49.

(f) The described movement of the cam disc or resetting member 45 also cocks spring 73 and extends the piston rod 83 of the dash pot. This occurs Without substantial resistance from the dashpot.

(g) It should be noted that the tail 109 of the cocking pawl is not brought into position to be actuated by 103 until tooth 35 is engaged by pawl 95. This compels a complete movement of disc 31 otherwise the mechanism is unable to function further.

Thus the parts are all restored to their initial positions as shown in Figures 2 and 3, to complete the cycle.

ge m

NOZZLE SUPPORT AND OPERATING MECHANISM (Figures 1, 4)

Referring to Figure 4, the numeral 171 represents the nozzle support which has an upward projection 173 adapted to enter a slot in the usual nozzle guard 10, to hold the nozzle 8 on the support and to block the valve lever 12 against operation.

A lever 175 is mounted at the outer end of the support for rotation about the axis of the support to various positions numbered I to IV. When the lever moves from position I to position II, the associated mechanism must rotate pawl 103 to trip the cocking pawl 59; when the lever moves on to position III, the mechanism must move the ratchet disc 31 to its full clockwise position; when the lever moves to the position IV, the mechanism moves the ratchet disc reversely to engage tooth 41 with the cocking pawl 59 and when the lever is returned to the initial position, the mechanism must rotate the ratchet disc to its initial position. In each position of the lever 175, the functions described in Operation above will occur.

It will be noted that in positions II and IV, the lever blocks the nozzle support so that it is impossible to place the nozzle thereon without first moving the lever to position I.

Referring to Figures and 6, a bracket 177 is mounted on the switch box 179' which is supported on the dispenser and the bracket has mounted therein a pair of parallel shafts 179181 which are connected with the

hubs

33 and 105 respectively of the register by suitable pin and slot connections.

Shaft 179 has fixed to it a lever 183 which has a lateral projection 185 which is adapted to engage and depress the plunger 187 of the switch 6 upon clockwise rotation of the lever, so as to close the switch against the action of spring 188. When the lever occupies its full line Figure 6 position, it is clear of the plunger which is moved outwardly of the box by spring 188 and the switch is open.

Shaft 181 has fixed to it a lever 178.

A second bracket 189 is fixed to a frame member 191 of the dispenser and a shaft 193 is rotatably mounted in the bracket, substantially parallel with

shafts

179, 181 and carries fixed to it a wrist plate 195 which is provided with three

arcuate slots

197, 199 and 201.

A link 203 has one end hooked into the end of lever 183 and the other end hooked into slot 199. A link 205 is connected to lever 178 and has its other end hooked into slot 201. A pin 207 on the bracket 189 engages slot 197 and serves as a stop for limiting the rotation of the plate in both directions.

A pawl or dog 209 is pivotally mounted at 211 on the plate and it has one arm 213 connected to one end of a helical tension spring 214, the other end of the spring is mounted on a pin 215 set in the plate. The other arm of the pawl has an edge 217 which is disposed substantially on a radius of the shaft 193 and slot Ztll while the top edge 219 is disposed at about 60 degrees thereto. The arm bearing these edges projects across the slot 2131 so as to engage the portion of the bent end of the rod 205 which extends through the slot.

It will thus be seen that when the plate 195 rotates counterclockwise (Fig. 6) the pawl will exert considerable pressure on the rod since the pawl 299 must rotate through a substantial angle, counter-clockwise, against the increasing tension of spring 214, until the pawl is moved past the slot. On the other hand when the rod is above the pawl and the plate is rotated clockwise, the.

pawl need be rotated only through a relatively small angle to force it past the slot, so that the rod, in this case, will pass' the pawl with relative ease.

As shown particularly in Figure 5, a nozzle receptacle 221- is mounted on the housing 223 of the dispenser and the nozzle support 171*is mounted on the receptacle.

The lever 175 is fixed to a shaft 224 which is rotatably mounted in suitable bearings 226 in the support, is provided with ahead 224' and is held against withdrawal therefrom by theretainer 225 and the lever. Shaft "193 is'provided with a similar head 227. The heads carry pins 229, 231 respectively which engage suitable slots in a sleeve 233 which fits over both heads. This connection transmits torque from lever 175 to plate 195 in both directions.

A helical torsion spring 235 has one end fixed to a stationary member such as the bracket 189 and the other end to the actuating plate 195 in such a manner that the spring opposes the counterclockwise rotation of the lever.

Operation Bearing in mind the functions and motions of the register control mechanism as outlined in column 4, lines 1 to 76 and the movements of the lever 175 as set forth in column 5, lines 1 to 76 and column 6, lines 1 to 11 and viewing the parts in the full line position of Figure 6, it will be seen that the movement of the lever 175 from position I to position II, Figure 4 will cause the pawl 289 to depress the first link 2&5 and rotate lever 178, shaft 181, hub and trip pawl 103 clockwise (Figs. 2 and 6) to trip the cocking pawl 59 with the result that the registers are reset as described above. Lever 183 does not move. The rotation of pawl 103 is limited by contact with cam disc 45 and therefore further rotation of lever from position II to position III is resisted by the link 2195. Pawl 209 then rotates, as increasing pressure is applied to lever 175, untiLit clears the slot 201 after which further rotation of the plate 195 may proceed because the first link 2115 will slide freely in the first arcuate slot 201.

The above described rotation of the plate relative to the second link 2033 has brought the right hand end of the second arcuate slot 199 to the link 283 so that such further rotation of the plate will now pull down on link 2113 and will rotate lever 183clockwise, causing projection 185 to depress the plunger 187 and close the switch. At the same time, shaft 179 rotates hub 33, ratchet disc 31 and shaft 23 so that the registers are clutched to the meter and declutched from the reset mechanism.

When the lever 175 reaches position III, the operator will release it, whereupon the spring 235, which has been wound up during the described rotation of the lever will return the lever to position IV. The link 2G3 and lever 183 are retracted by 188 spring and plunger 187, until the cocking pawl 59 is engaged by tooth 41 and the lever 175 is stopped in position IV by the contact of the other end of slot 199 with link 2113. The counterclockwise movement of lever 183 is not enough to permit the switch to open.

The lever 175 when it is returned to the Figure IV position prevents the nozzle from engaging the support 171.

The parts remain in the last described positions during the dispensing operation and at the conclusion thereof lever 175 is rotated to position I. During such rotation, it pushes link 203 upwardly, rotating lever 183 in a counterclockwise direction which causes hub 33 to rotate similarly with the result that the spring 73 is cocked and the reset mechanism is successively interlocked or latched by

teeth

39, 37 and pawl 95 which constitute additional latch means to prevent reclo-sing switch 6 until lever 175 has been restored to its first position in which the control element is restored to the initial latched condition in which latch means 35, 95 are engaged. It should be notedthat the latch means 35, 95 prevent closure of the switch by

levers

175 and 183 until the register has been reset and the control element has been freed, so that while

levers

175 and 183 serve to actuate the switch, such actuation is under the control of the element and the latch means. reopened due to the movement of projection 185 away from plunger 187.

During the described rotation of lever 175 to position The switch is also a I, the pawl 209 passes to the other side of link 205 to. condition these parts for a subsequent operation.

When lever 175 occupies position I, the nozzle may be placed on the support 171.

Control valve In some cases it is necessary to operate a iluid control valve so that it opens and closes a dispensing line simultaneously with the closing and opening respectively of the switch.

For purposes of illustration, a servo-valve mechanism 4 such as that disclosed in Patent Number 2,732,100 issued to Jackson et a1. January 24, 1956 as shown. The pilot or control valve operator 239 thereof is connected through a system of links and levers indicated generally by numeral 241 to the lever 183 so that the pilot valve is opened and closed as required.

It is obvious that various changes may be made in the form, structure and arrangement of parts of the specific embodiments of the invention disclosed herein for purposes of illustration, Without departing from the spirit of the invention. Accordingly, applicant does not desire to be limited to such specific embodiments but desires protection falling fairly within the scope of the appended claims.

I claim:

1. An apparatus comprising a resettable register, a resetting member mounted for movement between initial and reset positions and connected to reset the register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial position to load said spring, latch means for holding said element with said member in its initial position, manually operable means, having a first position, a lost motion device connecting said manually operable means with said element, means responsive to the operation of said manually operable means from said first position, through a distance within the limit of the lost motion in said device, for actuating said releasable means to free said member from said element for movement by said spring.

2. An apparatus comprising a resettable register, a resetting member mounted for movement between initial and reset positions and connected to reset the register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial position to load said spring, latch means for holding said element with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually operable means, having a first position, a lost motion device connecting said manually operable means with said element, means responsive to the operation of said manually operable means from said first position, through a distance within the limit of the lost motion in said device, for actuating said releasable means to free said member from said element, for movement by said spring.

3. An apparatus comprising a resettable register, a re setting member mounted for movement between initial and reset positions and connected to reset the register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial position to had said spring, latch means for holding said element with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually operable means, having a first position, a lost motion device connecting said manually operable means with said element, means responsive to the operation of said manu-- ally operable means from said first position, through a distance within the limit of the lost motion in said device, for actuating said releasable means to free said member from said element for movement by said spring, a switch,

means, connected for operation by said manually operable means and for control by said element, for closing said switch upon further operation of said manually operable means in the same direction after the release of said latch means.

4. The structure defined by claim 3 which includes means for reengaging said releasable means, after the closure of said switch, to condition said manually operable means and said element for opening said switch and for restoring said member to said initial position, when said manually operable means is restored to its first position.

5. The structure defined by claim 4 which includes additional latching means for preventing reclosure of the switch prior to restoration of said manually operable means to said first position.

6. An apparatus comprising a resettable register, a resetting member mounted for movement between initial and reset positions and connected to reset the register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial position to load said spring, latch means for holding said element with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually operable means, having a first position, a 10st motion device con necting said manually operable means with said element,

. means including a separable connection, responsive to the operation of said manually operable means from said first position through a distance within the limit of the lost motion in said device, for actuating said re-- operable means and for control by said element, for clos-- ing said switch upon said further operation of said manually operable means in said same direction after the release of said latch means.

8. The structure defined by claim 7 which includes means for reengaging said releasable means, after the closure of said switch to condition said manually operable means and said element for opening said switch and for restoring said member to said initial position when said manually operable means is restored to its first position and means for reestablishing said separable connection as said manually operable means is restored to said first position.

9.. An apparatus comprising a resettable register, a resetting member mounted for movement between initial and reset positions and connected to reset the register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial, position to load said spring, latch means for holding saidmeans responsive to the operation of said manually operable means from said first position, through a distance within the limit of the lost motion in said device, for

actuating said releasable means to free said member from" said element for movement by said spring, said manually operable meansand lost motion device servingflto move said element upon further movement in the same direction after the release of said latch means, a switch, and switch operating means operable substantially simultaneously, with said element.

10.The structure defined by claim 9 wherein said switch operating means includes a lost motion mechanism having a lost motion travel ofpredetermined magnitude.

11. An apparatus comprising a resettable register, a resetting member mounted for movement between initial and reset positions and connected to reset the register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial position to load said spring, latch means for holding said element with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually operable means including an actuating plate, having a first position, said plate defining an arcuate slot, a link having means at one end mounted to slide in said slot as said plate is operated, a dog mounted on said plate for movement to and from blocking relation with said slot, yieldable means for holding said dog in blocking relation, said dog serving to engage and actuate said link means as'said plate is operated from said first position, means operable by the other end of said link for releasing said releasable means when said link is actuated, stop means to thereafter stop said link, said yieldable means and dog yielding to pressure applied through said plate to free said platefrom said link for further movement in the same direction.

12. The structure defined by claim 11 which includes means for pivotally mounting said dog on said plate for movement from blocking relationwith said slot upon motion of said plate in either direction relative to said link means.

13. The structure defined by claim 12 in which said dog defines a first edge disposed for contact with said link means upon movement of said manually operable means from said first position and a second edge disposed for contact with said link means upon movement of said manually operable means toward said first position after said plate has been freed from said dog, said first edge being disposed substantially normal tothe axis of the slot so as to afford a high resistance to the passage" of the link means and said second edge being disposedabove and so as to form an acute angle with said first edge, to afford small resistance to the passage of the link means.

14. An apparatus comprising a resettable register, a. resetting member mounted for movement between initial,v and reset positions and. connected to resetthe register meeting said element to move said member to its initialposition to load said spring, latch means for holding said element with saidmember in its initial position, means on said member forsr eleasing said latch, means as said member moves" into its reset position, manually operable means including an actuating plate, having a first position, said plate defining an arcuate slot, a link having means at one end mounted to slide in said slot as said plate is operated, a dog mounted on said plate for movement to and from blocking relation with said slot, yieldable means for holding said dog in blocking relation, said dog serving to engage and actuate said link means as said plate is operated from said first position, means operable by the other end of said link for releasing said releasable means when said link is actuated, stop means to thereafter stop said link, said yieldable means and dog serving to free said plate for further movement in the same direction, said plate defining a second arcuat'e slot, a second'link having means mounted to slide in said slot as said plateis operated, means con-J necting the other end of said link to operate said ele'- ment, said second slot and link means being so disposed with, respect to said first slot, link means and dog, that said second link means will be actuated by said plate means from said second position toward said first position to etfect reengagement of said releasable means, said second link and the means connecting said second link with said element, serving to stop saidmanually operable means in a third position.

17.1'n a liquid dispensing apparatus comprising a resettable register, a dispensing nozzle, and a support for said nozzle, the combination of a resetting member mounted for movement between initial and reset posi H tions and connected to reset said register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial positionto load said spring, latch means for holding said element with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually'operable,

means including a lever, having a first position, a lost motion device connecting said manually operable. means with said element, means responsive to the operation of said lever from said first position through a distance within the limit of the lost motion in said device to a second position, for actuating said'releasable means to free said member from said element for movement by said spring, a switch, means connected for operation by said manually operable means under control of said element, for closing said switch upon further movement of said lever in the same direction from said second to a third position, said lever being disposed with respect to said nozzle support so as to render said support inca pable of supporting the nozzle when said lever occupies its second position.

18. In a liquid dispensing apparatus comprising a resettable register, a dispensing nozzle, anda support for said nozzle, the combination of a resetting member mounted for movement between initial and reset positions and connected to reset said register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted-control element, releasable means for connecting said element to move said member to its initial position-to load said spring, latch means for holding said element" with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually operable means including a lever, having a first position, a lost motion device connecting said manually operable means With 1 said element, meansresponsive to the operation of said lever from said first position through a distance within the limit of the lost motion in said device, to a second position for actuating said releasable means to free said member from said element for movement by said spring, a switch, means connected for operation by said manually operable means under control of said element, for closing said switch upon movement of said lever in the same direction from said second to a third position, yieldable means for returning said lever from said third position toward said first position, means for stopping said lever in a fourth position intermediate said second and third positions, said lever being so disposed 11 with respect to said nozzle support as to render said support incapable of supporting the nozzle when said lever occupies its second and fourth positions.

19. The structure defined by claim 18 which includes means operable upon movement of said lever from said fourth toward said first position for opening said switch.

20. The structure defined by claim 19 which includes additional latch means acting on said element to prevent reclosing said switch, said additional latching means being rendered ineffective upon the return of manually operable means to said first position.

21. In a liquid dispensing apparatus comprising a resettable register, a dispensing nozzle, and a support for said nozzle, the combination of a resetting member mounted for movement between initial and reset positions and connected to reset said register when said member moves to reset position, a spring connected to move said member to its reset position, a movably mounted control element, releasable means for connecting said element to move said member to its initial position to load said spring, latch means for holding said element with said member in its initial position, means on said member for releasing said latch means as said member moves into its reset position, manually operable means including a lever, having a first position, a lost motion device connecting said manually operable means with said element, means responsive to the operation of said lever from said first position through a distance within the limit of the lost motion in said device, for actuating said releasable means to free said member from said element for movement by said spring, a switch, means connected for operation by said manually operable means under control of said element, for closing said switch upon movement of said lever in the same direction to a second position, said lever being so disposed with respect to said nozzle support that said support will receive said nozzle when the lever occupies said first position, said nozzle and support cooperating with said lever to prevent the operation of said lever to its second position.

22. In a control mechanism for a liquid dispenser, a flow control device having flow starting and flow stopping positions, a resettable register adapted to register the liquid dispensed, power means for resetting said register, an element connected to operate said flow control device, means for latching said element and said flow control device in flow stopping position, a pivotally mounted handle, actuating means connected for operation by said handle when it is moved in one direction, for causing said power means to reset said register, means operable by said power means substantially at the completion of resetting to release said latching means, means operable by said actuating means upon further movement of the handle in the same direction to move said element and flow control device to said flow starting position.

23. In a control mechanism for a liquid dispenser which includes a resettable register adapted to register the liquid dispensed, resetting means, including a rotatably mounted resetting member, adapted to reset said register when the member is rotated in a first direction, a spring connected to rotate said resetting member in said direction, a rotatably mounted control element, first releasable connecting means for connecting said element to rotate said resetting member in a second direction to load said spring, means for latching said control element in a spring loaded position, said resetting means including means, eflective upon substantial completion of resetting for releasing said latching means, trip means mounted for movement to and from a position for releasing said first connecting means, the improvement which comprises a pivotally mounted handle, a mechanism including a lost motion device, connected for operation by said handle and connected to operate said control member in directions correlative with the directions of movement of said handle, means for connecting said handle to move said trip means to releasing position in response to movement.

of said handle in one direction through a distance permitted by said lost motion device and flow control means, operable simultaneously with said control element, to control the delivery of liquid from said dispenser.

24. The structure defined by claim 23 wherein said flow control means comprises a switch.

25. The structure defined by claim 23 wherein said mechanism comprises a wrist plate as said actuator, connected for operation by said handle and having a pivotal axis disposed substantially parallel to that of said control element, a crank connected to said control element and a link connecting said crank with said wrist plate.

26. In a control mechanism for a liquid dispenser which includes a resettable register adapted to register the liquid dispensed, resetting means, including a rotatably mounted resetting member, adapted to reset said register when the member is rotated in one direction, a spring connected to rotate said member in said direction, a rotatably mounted control element, releasable connecting means for connecting said element to rotate said member in the opposite direction to load said spring, trip means for releasing said connecting means, latching means for latch ing said element in a spring loaded position, said resetting means including means effective upon substantial completion of resetting for releasing said latching means, the improvement which comprises a handle mounted for movement in said one direction from an initial position to. a first position, a mechanism including a lost motion device for connecting said handle with said control element to move said control element in directions correla tive with the directions of movement of said handle, said mechanism serving, with said element and said latching means, to stop said handle in said first position, means operable by said handle during its movement to said. first position for actuating said tripping means to release said connecting means, said spring and resetting means serving thereupon to reset the register and to release said tion, means for returning said handle, mechanism and control element to said second position, a switch, means, including a second lost motion device, operable simultaneously with said control element to close said switch 'during passage of said handle beyond said second position, said second lost motion device serving to prevent opening of said switch during the return of said handle to said second position.

Tolley June 15, 1937