US3434580A - Manual actuator for service machines - Google Patents

Manual actuator for service machines Download PDF

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US3434580A
US3434580A US3434580DA US3434580A US 3434580 A US3434580 A US 3434580A US 3434580D A US3434580D A US 3434580DA US 3434580 A US3434580 A US 3434580A
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shaft
armature
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pawl
actuator
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Mitchell A Hall
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Mitchell A Hall
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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F5/00Coin-actuated mechanisms; Interlocks
    • G07F5/02Coin-actuated mechanisms; Interlocks actuated mechanically by coins, e.g. by a single coin

Description

March 25, 196% M. A. HALL MANUAL ACTUATOR FOR SERVICE MACHINES I of 2 Sheet Filed July 2.8, 1967 INVENTOR March 25, 1969 M. A. HALL 3,434,580
ANUAL ACTUATOR FOR SERVICE MACHINES Filed July 2.8, 1967 Sheet 2 of 2 FIG-H INVENTOR MITCHELL A. HALL nited States 3,434,580 MANUAL ACTUATOR FOR SERVICE MACHINES US. Cl. 194-9 23 Claims ABSTRACT OF THE DISCLOSURE The actuator includes a manually reciprocable operating shaft to activate the starter of a dispensing machine. The operating shaft normally is locked against advancement toward the starter, but may be released for manual advancement by the deposit of a proper coin or coins in a coin slide which may be located at a distance from the actuator. The coin slide and the actuator are associated to the extent that the actuator includes solenoid means controlled by one or more electric switches to be closed whenever proper coins are accepted by the coil slide. The operating shaft of the actuator includes means to foil attempts made for free play, and all operative elements thereof are inaccessible for unauthorized manipulation.
This invention relates to a manual actuator for service machines, for example, machines designed to dispense a commodity or a service, or machines for other purposes which may be placed in operation by a patron after deposit of one or more tokens in a suitable receptacle.
An object of the invention is to provide a manually operable actuator including means to preclude free play or operation of a service machine in the absence of a proper coin or token deposite, and to prevent more than one actuation in return for each such deposit.
Another object of the invention is to provide improved mechanism in an actuator of the character stated, which is simple and inexpensive to manufacture and install, and which will perform reliable trouble-free service without maintenance expense throughout a long period of use.
A further object is to provide an actuator for the purpose stated which is fool-proof in many respects, the operating parts of which are not easily accessible for unauthorized manipulation.
The foregoing and other objects are attained by the means described herein and illustrated upon the accompanying drawings, in which:
FIG. 1 is a perspective view of the improved actuator, in a form which requires for its operation the closing of one electric circuit, the operating shaft thereof being fully retracted.
FIG. 2 is a fragmentary top plan view of FIG. 1.
FIG. 3 is a side elevation of FIG. 2, parts being broken away.
FIG. 4 is a view similar to FIG. 2, showing the operating shaft partly advanced.
FIG. 5 is a side elevation of FIG. 4.
FIG. 6 is a view similar to FIG. 4, the operating shaft being fully advanced to an operative position.
FIG. 7 is a side elevation of FIG. 6.
FIG. 8 is a view similar to FIG. 7, the operating shaft being partially withdrawn from operative position.
FIG. 9 is a top plan view of a modification wherein two electric circuits are required for conditioning the device for operation, the operating shaft thereof being in the fully withdrawn or inoperative position.
FIG. 10 is a fragmentary longitudinal cross-section taken through the axis of the operating shaft.
FIG. 11 is a view similar to FIG. 9, with the operating shaft thereof partially advanced.
FIG. 12 is a view similar to FIG. 10', showing the relationship of parts occurring in FIG. 11.
3 ,434,586 Patented Mar. 25, 1969 FIG. 13 is a view similar to FIG. 11, showing the operating shaft fully extended to the operative position.
FIG. 14 is a view similar to FIG. 12, showing the relationship of parts occurring in FIG. 13.
FIG. 15 is a view similar to FIG. 14, showing the operating shaft thereof partially withdrawn from the operative position.
Machines for vending services or commodities general ly are coin-operated, that is, they require the deposit of one or more proper coins in order to condition a machine for the dispensing operation. Usually the dispensing machine embodies a starter in the form of a shaft, lever, button, or electric switch (not shown) which may be depressed or otherwise actuated to initiate a dispensing operation, only after a deposit of the proper coin or coins. The starter element of the dispensing machine may be aligned with one end 18 of an operating shaft 20 to be reciprocated by means of a knob or handle 24. Shaft 20 may be reciprocated between an inoperative or retracted position (FIGS. 1, 2, 3, 9 and 10), and an operative or extended position (FIGS. 6, 7, 13 and 14). In the operative or extended position, the shaft end 18 may strike and move the dispensing machine starter, to initiate a dispensing operation.
The actuator disclosed in the accompanying drawings may be installed within a dispensing machine housing, with handle 24 exposed for manipulation exteriorly of the housing, and with shaft end 18 in alignment with the dispensing machine starter. It may be noted that said actuator includes no coin-receiving or coin testing components such as are usually incorporated in a coin slide. In practice, a conventional coin slide may be used in conjunction with the present actuator, and may be located remotely therefrom, if desired.
The present actuator may depend for its operation, upon the momentary closing of an electric switch 26 (FIG. 1), or upon the momentary closing of a plurality of electric switches 28, 30 (FIG. 9), said switch or switches preferably being located for actuation by a coin slide which tests and either accepts or rejects coins deposited therein. The switch or switches may be closedcircuited only upon the acceptance of proper coins or tokens by the coin slide. Accordingly, the acceptance of proper coins or tokens by the coin slide may result in closing the switch or switches momentarily, to furnish electric impulses which will condition the present actuator for manipulation by means of handle or knob 24.
With reference now to FIGS. 1 through 8, the shaft 20 may be mounted upon a base 32 for longitudinal reciprocation, and may carry a fixed stop 34 to limit movement of the shaft to the retracted or inoperative position of FIGS. 1, 2 and 3. Stop 34 has another function later to be explained.
Intermediate the stop 34 and the inner end 18, shaft 20 may be provided with a series of annular ratchet grooves providing in effect rack teeth 36, flanked by annular seats 38 and 40 of reduced diameter. A reversible doublenosed ratchet pawl 42 pivoted upon a stationary element of the base at 44, and biased to a neutral position by a spring 46, may dip into either of the seats 38 or 40 at the extreme shifted positions of shaft 20. Upon advancement of shaft 20 to the right, FIG. 5, pawl 42 may ratchet freely over teeth 36, but will perform to preclude retraction of the shaft until the shaft reaches the fully extended position of FIG. 7, at which the pawl drops into seat 38 preparatory to reversing its operation. From the position of FIG. 7 the shaft 24 may be retracted, according to FIG. 8, with the pawl ratcheting freely over teeth 36 but remaining always in readiness to prevent shaft advancement to the right in FIG. 8, until the pawl drops into seat 40 upon full retraction of shaft 20.
From the foregoing explanation, it will be understood that pawl 42 assures continuity of shifting of shaft 29 in either of its linear directions of shiftability between the fully advanced and the fully retracted positions.
The numeral 50 indicates an electro-magnetic device, preferably in the form of a solenoid having a reciprocable armature 52 to be retracted into the coil of the solenoid whenever switch 26 is momentarily closed by reason of a coin or token acceptance by a coin slide as previously explained. The armature preferably is not spring-biased in either direction of its movement. A link 54 carried by the outer end of armature 52 connects the armature to a locking pawl 56, which by the force of a spring 58, may be biased constantly toward the longitudinal axi of shaft 20. The locking pawl 56 may be rockable upon a stud or pivot 60 which is fixed to base member 32.
When armature 52 is extended, and operating shaft 20 is fully retracted to the inoperative position of FIGS. 1, 2 and 3, the nose of pawl 56 may be yieldingly projected by spring 58 onto the seat 40 of shaft 20, and will engage a shoulder or abutment 62 at one end of ratchet structure 36 to preclude manual advancement of shaft 20 toward the operative position. The shaft will be so locked against advancement until pawl 56 is withdrawn, as in FIG. 4, incident to retraction of armature 52 resulting from momentary closing of electric switch 26. As was previously stated, armature 52 will remain retracted after a momentary energization of solenoid 50, as in FIG. 4, thereby to unlock shaft 20 and permit advancement thereof by means of handle 24, to the fully extended or operative position of FIG. 6.
The numeral 64 indicates an armature latch pivoted upon a pin 66 fixed to base member 32. The latch may have a toe 68 at one end, and a heel 70 at the opposite end thereof. A spring 72 may operate to yieldingly urge the toe of the latch against a side of armature 52.
The armature may carry a keeper in the form of an annular radially outwardly extended flange '74, which is fixed for movement with the armature. As FIG. 2 indicates, latch toe 68 is held by spring 72 against the armature side and behind keeper 74, when shaft 21) is fully retracted with pawl 56 in engagement with shaft abutment 62. The armature may limit rotation of latch 64 in the clockwise direction.
Upon momentary closing of switch 26 to withdraw the armature, as in FIG. 4, keeper 74 will act to momentarily rotate the latch in counter-clockwise direction, and the toe of the latch will override the keeper to assume a position ahead of the keeper and against the armature (FIG. 4), at which position of the latch the toe {thereof holds the armature in retracted position. At the same time, pawl 56 is withdrawn from seat 46 and abutment 62 by the retraction of armature 52, so that the operating shaft may be advanced toward the right, or toward operative position, by means of knob or handle 24. FIG. 4 shows the operating shaft partially advanced.
When the operating shaft reaches the fully advanced position of FIG. 6, stop 34 thereon strikes the heel 7d of latch 64 and rotates the latch in counter-clockwise direction to displace the latch toe 68 from engagement with keeper 74. Locking pawl 56 thereupon is projected onto seat 38 by the force of its spring 58, and may engage a shaft abutment 76 to stop the shaft advancement at the operative position of the shaft. The locking pawl in so moving, may through the agency of link -4, extend the armature 52, FIG. 6. In reaching the fully advanced position of FIG. 6, the shaft end 18 will have actuated a starter of a dispensing machine, to deliver a commodity or a service.
The operating shaft 20 of FIG. 6 having been fully advanced, may now be retracted by means of handle or knob 24. In the initial stage of the shaft retraction, stop 34 will leave the heel of latch 64, thereby permitting the toe 68 of the latch to engage behind keeper 74 as in FIG. 2, while the teeth of ratchet 36 freely pass under and override the nose of pawl 56. Pawl 56 may be loose on link 54 to permit the ratchet override, or, the pawl in being displaced by ratchet teeth 36 passing therunder, may slightly move the armature into the solenoid coil and thereby cause a slight displacement of latch toe 68 short of causing keeper 74 to pass the toe 68 of the latch. That is, keeper 74 will not thereby be moved far enough toward the solenoid coil, so as to bring about the solenoid coil, so as to bring about the solenoid latching condition of FIG. 4.
From the foregoing explanation, it should be understood that full retraction of operating shaft will bring about the relationship of the elements depicted by FIGS. 1, 2 and 3, in readiness for a subsequent cycle of operation to be initiated by a momentary energization of solenoid 50 as previously explained.
In the modification, FIGS. 9 through 15, two solenoids 78 and 80 are employed, and are separately energizable by the momentary closing of two electric switches 28 and 30, either simultaneously or consecutively. In one practical exemplification, switches 28 and may be incorporated in a coin slide which is adapted to receive two coins of different denominations. If both coins deposited in the coin slide pass the usual tests, one coin may be instrumental, directly or indirectly, in closing the switch of solenoid 78, and the other accepted coin may be instrumental in closing the switch of solenoid 80. If either coin is rejected by the coin slide, that switch which is associated with the rejected coin will fail to close, and accordingly, one of the solenoids will receive no energizing electric impulse. The same situation may result from the use of two separate coin slides, each controlling one of the electric switches.
The actuator of FIGS. 9 through 15 may incorporate an operating shaft 20 like that of FIG. 1, which may be advanced to operative position after a momentary energization of both solenoids 78 and 80, but not after energization of only one solenoid. That is, two proper coins must be deposited in and accepted by one or more coin slides, before operating shaft 20 may be manipulated to initiate delivery of a service or commodity by a service machine under the control of the actuator.
The reference numeral 82 indicates a base member which supports shaft 20 for longitudinal reciprocation between the fully retracted inoperative position of FIGS. 9 and 10, and the fully advanced operative position of FIGS. 13 and 14. Shaft end 18 in these figures corresponds to the shaft end 18 of FIGS. 1 through 8, and may perform the same function of activating the starter of a service machine. The opposite end of shaft 20 may carry a knob or handle, as at 24 of FIG. 1, and intermediate the shaft ends may be formed the ratchet section 36 flanked by the seats 38 and of reduced diameter. As FIGS. 10, l2, l4 and 15 clearly indicate, retrograde movements of shaft 20 may be controlled by a springbiased reversible pawl 42 in a manner and for the purposes previously explained.
The armatures of solenoids 78 and are denoted 86 and 88, respectively, and each may carry at its exposed end a connecting link 84. The connecting links have pivotal connection with a pair of locking pawls 90 and 92 which at corresponding ends may be pivoted at 94, 94 upon base member 82. Each locking pawl may have at it swinging end a nose portion 96 adapted to rest normally upon seat 40 and to engage a stop shoulder or abutment 98 to preclude advancement of shaft 20 toward the operative position. The noses of the locking pawls may be yieldingly held against seat 40 and abutment 98 by suitable spring means 100, which may comprise a tension spring having opposite ends thereof anchored on the pawls for drawing the pawl noses toward one another.
From the foregoing explanation, it will be understood that the locking pawls acting against annular abutment 98, will normally preclude shifting of shaft 29 from left to right. However, the pawl noses may be swung outwardly about their pivots 94 to disengage the abutment 98, Whenever the solenoids 78 and 80 are energized to retract their armatures 86 and 88 through the agency of links 84, 84. It will be understood also that energization of only one solenoid will not release shaft for manual advancement, because the locking pawl controlled by the solenoid not energized, will remain in locking engagement with abutment 98. Thus, the deposit of a proper coin in a coin slide to effect a closing of switch 28, will not sufiice to release shaft 20 for reciprocation unless a second proper coin is deposited to effect a closing of switch also.
The release of shaft 20 by locking pawls 90 and 92, is to be effected whether the solenoids be energized either simultaneously, or in succession, and means is provided for assuring such release of the shaft. Said means may comprise a pair of armature latches 102 and 104. The latches may be rockable upon stationary pivots 106 and 108 upstanding upon base member 82, and each latch may include a toe 110 and a heel 112 located at opposite ends of the latch. Spring means 114 associated with the latches, serves to yieldingly urge the toes of the latches constantly toward and against the sides of armatures '78 and 80. Such spring means may comprise a single tension spring having opposite ends anchored to the latches so as to rotate the latches in opposite directions about their respective pivots, with the latch toes stopped against the armatures.
Each armature near its exposed or outer end, may be provided with a keeper 116 to be engaged by a latch toe 110 as in FIG. 11. The keeper may consist of an annular shoulder or flange turned upon the armature to produce the keeper 116. The keeper may include a conical surface upon which the latch toe 110 may slide in shifting from the FIG. 9 position to the FIG. 11 position resulting from a retraction of the solenoid armature.
The disclosures of FIGS. 9 and 10 indicate a normal relationship of the actuator components, at which the armatures 86 and 88 are extended; the locking pawls 90 and 92 are in engagement with the shaft abutment 98; the latches 102 and 104 are out of engagement with keepers 116; and shaft 20 is in the fully retracted inoperative position. Assuming now a momentary closing of both switches 28 and 30, armatures 86 and 88 will be retracted by their respective solenoids, and keepers 116 will move beyond the toes of latches 102 and 104 to latch-engaging position (FIG. 11). At the same time, connecting links 84 attached to the armatures, will displace the noses of pawls 90 and 92 from seat and from locking engagement with shaft abutment 98, thereby to release shaft 20 for manual advancement to the right, as in FIG. 11, for distortion to the fully advanced operative position of FIG. 13, at which the shaft end may actuate the starter of a service or vending machine. During the shaft advancement, the pawl 42 of FIG. 12 perform to preclude retrograde movement of the shaft in a manner previously explained, for the purpose of foiling free play manipulation of the shaft.
Once the shaft has reached the operative position, shaft stop 34 will have struck the latch heels 112 (FIG. 13), to disengage the latch toes 110-112 from keepers 116, and permit the noses of pawls 90-92 to dip into shaft seat 38 under the force of spring 100. Adjacent to seat 38 is a stop or abutment 118 to be engaged by the noses of pawls 90 and 92, for limiting advancement of shaft 20 at operative position.
Operating shaft 20 may now be retracted manually from the operative position of FIG. 13 to the inoperative initial position of FIG. 9, and in so retracting, the teeth of ratchet section 36 will pass the nose ends of locking pawls 90 and 92 although the pawl noses may be lightly urged toward the ratchet teeth by spring 100. Shaft stop 34, of course, will leave the heels 112 of latches 102 and 104, permitting the latch toes 110 to impinge against the side of each armature behind keepers 116 as in FIG.
9. The device will then be in condition for another cycle of operation to be initiated by a closing of switches 28 and 30.
It will be noted that latches 102 and 104 will engage the keepers 116 only after momentary energization of the solenoids to retract the armatures thereof. If only one solenoid is activated, the armature of that solenoid Will be latched to hold its associated holding pawl disengaged from shaft abutment 98, but the shaft nevertheless will be locked against advancement by the holding pawl whose solenoid had not been activated. Thus it is apparent that the operating shaft may be advanced to operative position only after an energization of both solenoids, either simultaneously or in succession. If the switches 28 and 30 are to be momentarily closed by a deposit of proper coins in one or more coin slides, the actuator of the present invention will be operative only on condition that proper coins in proper numbers and denominations are deposited.
It is to be understood that various modifications and changes may be made in the structural details of the device, within the scope of the appended claims, without departing from the spirit of the invention.
What is claimed is:
1. A manual actuator for activating the starter of a coin-controlled dispensing machine having associated therewith a coin slide which includes at least one normally open-circuited momentary contact electric switch, said actuator comprising in combination: a base mem her; an elongate operating shaft supported by the base member for longitudinal manual reciprocation between a normally retracted inoperative position, and an advanced operative position at which latter position said shaft may activate a dispensing machine starter; a solenoid comprising a coil winding to be energized momentarlly by closing of the contacts of the normally opencontact electric switch upon acceptance of a coin deposited in the coin slide, and an armature shiftable in one direction by energization of said solenoid coil windng; a keeper fixed upon said armature; a movable holdmg pawl having a nose yieldingly biased toward the operating shaft; an abutment on said shaft engageable by the nose of the holding pawl so biased, to preclude advancement of said shaft from the inoperative position aforesaid; connecting means between the holding pawl and the armature enforcing disengagement of the pawl nosefrom said shaft abutment when the solenoid coil winding is energized to shift the armature in said one d rection; a disengageable latch having a toe yieldingly biased to engage the armature keeper following shifting of the armature in said one direction, to maintain the armature in said shifted position; and a stop on the operat ng shaft movable therewith to strike the latch and disengage the toe thereof from the keeper upon advancement of the shaft to operative position, said stop being movable from contact with the latch upon retract1on of the operating shaft.
2. The manual actuator as specified by claim 1, wherein the combination includes: means operative during advancement of the operating shaft to preclude retrograde movement of said shaft, and to preclude retrograde movement of said shaft during retraction thereof. 3. The manual actuator as specified by claim 1, wherein the combination includes: means operative durin retraction of the operating shaft from the operative posi tron, to preclude retrograde movement of said shaft.
4. The manual actuator as specified by claim 3, wherein the means last mentioned includes a series of rack teeth carried by the operating shaft, and a ratchet pawl having a tooth yieldingly urged into contact with the rack teeth.
I 5. The manual actuator as specified by claim 1, wherein the combination includes: a second abutment on the operating shaft engageable by the nose of the holding 7 pawl, to establish the fully advanced operative position of said shaft.
6. The manual actuator as specified by claim 5, wherein the combination includes: means operative during retraction of the operating shaft from said operative position, to preclude retrograde movement of said shaft.
7. The manual actuator as specified by claim 6, wherein the base member provides a common support for the latch, the holding pawl, the operating shaft, and the solenoid including the coil winding and the armature thereof.
8. A manual actuator for activating the starter of a coin-controlled dispensing machine having associated therewith coin side means embodying two normally opencircuited momentary contact electric switches separately close-circuited by passage of at least two coins through said coin slide means, said actuator comprising in combination: a base member; a single elongate operating shaft supported by the base member for longitudinal manual reciprocation between a normally retracted inoperative position, and an advanced operative position at which latter position said shaft may activate a dispensing machine starter; a first solenoid and a second solenoid fixed upon the base member, and each comprising a coil winding, said windings being each electrically connected with one of the pair of normally open-circuited momentary contact electric switches to be close-circuited incident to passage of at least two coins through the coin slide means as stated; an armature associated with each solenoid, said armatures being shiftable individually in one direction by separate energizations of said solenoid coil windings through said switches; a keeper fixed upon ea h armature; a pair of movable holding pawls each having a nose yieldingly biased toward the operating shaft; abutment means on said shaft engageable by the noses of the holding pawls so biased, to preclude advancement of said shaft from the inoperative position aforesaid; connecting means connecting one holding pawl with the armature of the first solenoid and connecting means connectin the other holding pawl with the armature of the second solenoid, enforcing disengagement 0f the pawl noses from said shaft abutment means when the solenoid coil windings are energized to shift the armatures in said one direction; a pair of disengageable latches each having a toe yieldingly biased to engage one of the armature keepers following shifting of the armatures in said one direction, to maintain the armatures in said shifted position; and stop means on the operating shaft movable therewith to strike both latches and disengage the toes thereof from the keepers upon advancement of the shaft to operative position, said stop means being movable from contact with both latches upon retraction of the operating shaft.
9. The manual actuator as specified by claim 8, wherein the combination includes: means operative during advancement of the operating shaft to preclude retrograde movement of said shaft, and to preclude retrograde movement of said shaft during retraction thereof.
10. The manual actuator as specified by claim 8, wherein the combination includes: means operative during retraction of the operating shaft from the operative position, to preclude retrograde movement of said shaft.
11. The manual actuator as specified by claim 10, wherein the means last mentioned includes a series of rack teeth carried by the operating shaft, and a ratchet pawl having a tooth yieldingly urged into contact with the rack teeth.
12. The manual actuator as specified by claim 10, wherein the first solenoid, its armature, and one holding pawl connected thereto, and the second solenoid, its armature, and the other holding pawl connected to the armature, of said second solenoid, are disposed in substantial balance at opposite sides of the operating shaft axis of reciprocation.
13. The manual actuator as specified by claim 8, wherein the combination includes: a second abutment means on the operating shaft engageable by the nose of at least one of the holding pawls, to establish the advanced operative position of said shaft.
14. The manual actuator as specified by claim 13, wherein the combination includes: means operative during retraction of the operating shaft from said operative position, to preclude retrograde movement of said shaft.
15. A manual actuator for activating the starter of a coin-controlled dispensing machine having associated therewith a coin slide which includes a normally opencircuited momentary contact electric switch to be closecircuited momentarily by passage of a coin through the coin slide, said actuator comprising in combination: a base member; an elongate operating shaft supported by said base member for longitudinal manual reciprocation between a normally retracted inoperative position, and an advanced operative position at which latter position said shaft may activate a dispensing machine starter; a solenoid comprising a shiftable armature and a coil winding, said coil winding adapted for electrical connection in circuit with a normally open-circuited momentary contact electric switch responsive to passage of a coin through a coin slide for momentary closing of said switch; means including a holding element normally locking the shaft against advancement in advance of a momentary energization of said solenoid coil winding incident to a momentary closing of the electric switch; means including the armature for displacing said holding element to free the operating shaft for manual advancement following a momentary closing of the switch; an armature latch operative to maintain the armature and the holding element in said displace condition during manual advancement of the operating shaft; and means carried by said operating shaft for tripping said armature latch as said shaft approaches the advanced operative position, for release of the holding element to the shaft-locking position aforesaid.
16. The manual actuator as specified by claim 15, wherein the combination includes: means operative during retraction of the operating shaft from the operative position, to preclude retrograde movement of said shaft.
17. The manual actuator as specified by claim 16, wherein the holding element is in the form of a pawl pivoted upon the base member for movement toward and from the operating shaft, and includes a link connection with the solenoid armature enforcing movement of said pawl with said armature.
18. The manual actuator as specified by claim 15, wherein the combination includes: means operative during advancement of the operating shaft to preclude retrograde movement of said shaft, and to preclude retrograde movement of said shaft during retraction thereof.
19. A solenoid controlled actuator comprising in combination: a base member; an elongate operating shaft having a handle end and a projectable end, and means on said base member supporting said shaft for longitudinal manual reciprocation betwen a normally retracted inoperative position, and an advanced operative position at which latter position the projectable end of the shaft is extended by manipulation of the handle end; a solenoid comprising a coil winding to be momentarily electrically energized, and an armature shiftable in one direction upon momentary energization of said solenoid coil winding; a movable holding pawl rockingly mounted relative to said base member, said pawl having a nose; yielding means biasing said pawl nose toward the operating shaft; an abutment on said shaft engageable by the nose of the holding pawl so biased, to preclude manual advancement of said shaft from the inoperative position toward the operative position thereof; connecting means between the holding pawl and said armature enforcing disengagement of the pawl nose from said shaft abutment upon momentary energization of the solenoid coil winding to shift the armature in said one direction; latch means operative to hold the armature in said shifted position; and means carried by the operating shaft to disable said latch means and free the armature for return movement by the force of said yielding means acting through said holding pawl, said disabling means being located upon the operating shaft to disable the latching means as said shaft reaches the advanced operative position thereof.
20. The actuator as specified by claim 19, wherein is included means operative during retraction of the operating shaft from the operative position, to preclude retrograde movement of said shaft.
21. The actuator as specified by claim 19, wherein is included means operative during advancement of the operating shaft toward the operative position, to preelude retrograde movement of said shaft.
22. The actuator as specified by claim 19, wherein is included a second abutment 0n the operating shaft engageable by the nose of the holding pawl as the shaft reaches 10 a fully advanced operative position, to limit further advancement of the shaft.
23. The actuator as specified by claim 22, wherein is included means operative during retraction of the operating shaft from the operative position, to preclude retrograde movement of said shaft until the shaft reaches the inoperative position thereof.
References Cited UNITED STATES PATENTS 374,297 12/ 1887 Everitt. 2,333,665 11/1943 Mills. 2,003,349 6/1935 Durnble 19410 2,051,344 8/1936 Parks et al 194-10 X 2,103,744 12/1937 Dumble 194-10 X 2,800,152 7/ 1957 Sloier.
SAMUEL F. COLEMAN, Primary Examiner.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US374297A (en) * 1887-12-06 Automatic vending apparatus
US2003349A (en) * 1933-11-25 1935-06-04 William B Spieler Dispensing and game playing machine
US2051344A (en) * 1933-05-22 1936-08-18 John P Kavanaugh Automatic packaging and vending machine
US2103744A (en) * 1933-06-14 1937-12-28 Joseph L Zelaskow Machine for game playing
US2333665A (en) * 1938-08-31 1943-11-09 Mills Ind Inc Multiple-coin control device
US2800152A (en) * 1954-06-07 1957-07-23 Mission Appliance Corp Coffee dispensing machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US374297A (en) * 1887-12-06 Automatic vending apparatus
US2051344A (en) * 1933-05-22 1936-08-18 John P Kavanaugh Automatic packaging and vending machine
US2103744A (en) * 1933-06-14 1937-12-28 Joseph L Zelaskow Machine for game playing
US2003349A (en) * 1933-11-25 1935-06-04 William B Spieler Dispensing and game playing machine
US2333665A (en) * 1938-08-31 1943-11-09 Mills Ind Inc Multiple-coin control device
US2800152A (en) * 1954-06-07 1957-07-23 Mission Appliance Corp Coffee dispensing machine

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