Apparatus for the measurement and control of the

Claim 1

IN APPARATUS FOR PRODUCING A SYNTHETIC ELONGATED FILAR STRUCTURE WHICH INCLUDES MEANS FOR DRAWING SUCH STRUCTURE WHILE IT IS IN LONGITUDINAL TRANSPORTING MOTION, THAT IMPROVEMENT COMPRISING A TRANSMITTER ELEMENT INTRODUCING MECHANICAL LONGITUDINAL VIBRATORY SIGNALS ONTO THE MOVING STRUCTURE, A RECEIVER ELEMENT SENSING SAID SIGNALS FROM SAID MOVING STRUCTURE AT A FIXEDLY SPACED DISTANCE THEREALONG FROM SAID TRANSMITTER, SAID TRANSMITTER AND RECEIVER ELEMENTS EACH INCLUDING A ROTATABLE CIRCULAR CONTACT JOURNALED ABOUT ITS CENTER ON THE ELEMENT AND ADAPTED TO BEAR AGAINST SAID FILAR STRUCTURE OF ROTATIVE MOVEMENT IN THE DIRECTION OF THE LONGITUDINAL VIBRATORY SIGNALS ON THE STRUCTURE AND OF LONGITUDINAL TRANSPORTING MOVEMENT OF SAID STRUCTURE, MEANS FOR COMPARING SAID TRANSMITTED AND RECEIVED SIGNALS, AND MEANS VARYING THE ACTION OF SAID MEANS FOR DRAWING SAID STRUCTURE, SAID MEANS VARYING IN RESPONSE TO DIFFERENCES BETWEEN SAID COMPARED TRANSMITTED AND RECEIVED SIGNALS, WHEREBY SAID MEANS FOR DRAWING THE FILAR STRUCTURE IS GOVERNED BY THE SIGNALS ON THE MOVING STRUCTURE BETWEEN SAID TRANSMITTER AND SAID RECEIVER.