US 4,287,396 AGranted

Control device for a coin operated mechanism

AssigneeGreenwald Electro-Mechanical Consultants, Inc.

InventorHarry Greenwald

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Abstract

A control device for a coin operated mechanism wherein the device includes a ratchet wheel formed having a plurality of teeth each having a front and a back face defining a tooth apex. The back face of each tooth and the front face of the next adjacent tooth define a well therebetween. The front face of each tooth is formed having a step which receives a ratchet follower to displace a normally open switch to its closed state at the end of each stepping operation of the ratchet wheel to operate the mechanism. A star wheel is operatively driven by a timing mechanism when the switch is in its closed state and is disposed to engage the ratchet wheel to cause rotation of the ratchet wheel conjointly upon rotation of the star wheel. The ratchet follower is displaced out of engagement with the ratchet tooth step and rides up the front face of the tooth over the apex and drops down the back face of the tooth, upon conjoint rotation of the star wheel and the ratchet wheel, whereby the ratchet follower is received within the next adjacent well thereby to open the switch.

Claims6

Dependent claims

In a control device for a coin operated mechanism wherein the device includes a ratchet wheel engaged with a ratchet follower, the ratchet wheel being disposed for rotation to displace the ratchet follower to open and close a switch and operate the mechanism, a stepping pawl operable to rotate the ratchet wheel and displace the ratchet follower to close the switch, and a star wheel operatively driven by a timing mechanism into engagement with the ratchet wheel when the switch is in its closed state to rotate the ratchet wheel and displace the ratchet follower to open the switch, wherein the improvement comprises:

(a) said ratchet wheel having a plurality of teeth each having a front and a back face defining a tooth apex therebetween, each said front face including a ratchet follower step, the back face of each tooth and the front face of the next adjacent tooth defining a well therebetween;
(b) said switch being a normally open type switch and being so disposed as to be moved to its closed state by the displacement of said ratchet follower into engagement with the step on one of said ratchet wheel teeth, and to move to its normally open state when said ratchet follower is disposed in one of said wells between adjacent teeth;
(c) said ratchet wheel being disposed, at the end of each stepping operation, to move said ratchet follower into engagement with one of said steps to move said switch to its closed state at the end of each stepping operation;
and
(d) said ratchet follower being displaced out of engagement with the step on a front face of one of said teeth, upon conjoint rotation of said star wheel and said ratchet wheel, to ride up said front face and over said apex and drop down the back face of said tooth wherein said follower is received within the next adjacent well thereby to open said switch.

2 more elements

A control device for a coin operated mechanism, said device comprising:

(a) a mounting plate;
(b) a shaft projecting from said mounting plate;
(c) a ratchet wheel and a star wheel rotably mounted on said shaft in axially spaced relation, each of said wheels having a pin thereon projecting toward the other wheel, and said pins each being located at an equal radial distance from the axis of said shaft;
(d) said ratchet wheel having a plurality of teeth each having a front and a back face defining a tooth apex therebetween, each said front face including a ratchet follower step, the back face of each tooth and the front face of the next adjacent tooth defining a well therebetween;
(e) first stepping means oscillatably mounted on said shaft and operatively connected to the coin operated mechanism, said stepping means comprising a pawl assembly engagable with the teeth of said ratchet wheel to step-wise rotate said wheel in one direction by a distance of one tooth, upon movement of said stepping means;
(f) switch means mounted on said plate having a switch movable from a normally open state to a closed state;
(g) a spring biased switch operating arm pivotally mounted on said plate and operatively connected to said switch, said arm having a follower portion engagable with the teeth of said ratchet wheel and movable between a first position wherein said follower is received within one of said wells, and a second position wherein said follower is engaged with one of said steps;
(h) said switch being in its open state when the follower portion of said switch operating arm is located in its first position and said switch being moved to its closed state when said follower portion is located in its second position;
(i) said first stepping means rotating said ratchet wheel to be disposed, at the end of each stepping operation, to move said follower portion to its second position thereby to move said switch to its closed state at the end of each stepping operation;
(j) an electrically operated timer mounted on said plate having an energizing circuit controlled by said switch, said timer comprising second stepping means operable when said switch is in its closed state to engage with the teeth of said star wheel and intermittently rotate said star wheel in the same direction of rotation of said ratchet wheel, such rotation of said star wheel causing the pin thereof to engage with the pin of said ratchet wheel, further rotation of said star wheel causing said ratchet wheel to rotate conjointly therewith;
and
(k) the follower portion of said switch operating arm being displaced from its second position, wherein said follower portion is in engagement with the step on a front face of one of said teeth, to ride up said front face and over said apex and drop down said back face of said tooth to its first position, wherein said follower portion is received within the next adjacent well, upon conjoint rotation of said star wheel and said ratchet wheel, thereby to open said switch.

9 more elements

Dependencies are inferred from the claim text.