Machine for dispensing coinage change

A machine for dispensing coinage change, including means for receiving a coin for which change is required, means operative in response to the receipt of said coin for advancing a conveyor means beneath a plurality of change coinage supply tubes, and means adapted to receive and deliver change from said conveyor means, wherein there is at least one row of supply tubes extending in the direction of motion of said conveyor means, each row containing a plurality of said supply tubes, said conveyor means including at least one row of recesses adapted to collect coinage from an advanced supply tube only after a supply tube trailing said advanced tube, in a particular row of tubes, fails to deliver a coin for collection by said conveyor means, the upper edge of each of said recesses lying in a plane proximate the bottom of said supply tubes, whereby the presence of a coin in said recess will preclude the delivery of a coin from an associated supply tube, and wherein a sensing mechanism is provided including at least one stop rod biased toward a position against the coin in a particular row on the conveyor means just prior to the point of delivery from said conveyor means, whereby upon an empty recess passing beneath said stop rod the rod will move through an aperture in said recess under the action of its biasing means to close, by means of an associated linkage system, a coin entry aperture to the machine and at the same time jam the conveyor means against further advanced movement.