Abstract:
An electromagnetic counter of repeated operations provided with switching means for performing after a predetermined number of operations a certain action. A ratchet wheel with pawl means, with an oscillating crank arm actuated by an electromagnet is provided which transmits to the ratchet wheel the movement by way of a pawl. A circular plate with a radial slot is connected with the ratchet wheel cooperating with a bolt actuating a switch which for instance disconnects a supply circuit after a predetermined number of operations.
Abstract:
AN ANNULAR CORE FOR A TOROIDAL COIL IS HELD IN A SHUTTLELESS WINDING MACHINE BETWEEN TWO ROLLERS ROTATED ABOUT FIXED AXES AND A THIRD, IDLING ROLLER MOUNTED ON A SPRING-LOADED ARM. THE CORE IS AXIALLY SECURED ON THE PLASTIC OR RUBBERCOATED ROLLERS BY FLANGES ON THE SAME, THERE BEING AT LEAST THREE FLANGES ON EACH ROLLER, EACH FLANGE BEING ALIGNED IN A COMMON PLANE WITH CORRESPONDING FLANGES ON THE OTHER TWO ROLLERS. THE FREE OF THE CONDUCTOR BEING WOUND ON THE CORE IS LED FROM THE CORE OVER ONE OF THE ROLLERS TO A SPRING-
LOADED CLAMP. THE SPRING TENSION ON THE ROLLER CARRYING ARM IS ADJUSTABLE, AND THE ARM MOVEMENT IS LIMITED BY A STOP.
Abstract:
A discriminating device for selecting and assisting in the removal of successive convolutions of wire from a wire bundle drivingly supported on a pair of spaced rollers to dispose one run of the wire bundle through the opening of a toroidal core on which the wire is to be wound. The discriminating device includes an arm defining an upper guide edge extending to a point adjacent to the core but just below the plane of the wire bundle. A cam driven in timed relation to the other components of the device periodically raises the arm to a position wherein the edge thereof moves between the wire strand being wound and the remaining convolutins of the wire bundle to lift the wire stand being applied to the core so that a pickup roller driven in timed relation to the arm elevating cam can pull a fresh loop of wire from the bundle to permit continued winding. The loop of wire passes through tensioning means adjacent to the core as thw wire is wound.