With Traverse Controlled Variation Patents (Class 57/95)
-
Publication number: 20100223900Abstract: Thread twist system for twisting and spinning machines which comprises means (12) for measuring and/or calculating directly or indirectly the rotation speed (11) of the runner (5), in such a way that the working movements and parameters of the machine keep real twisting constant throughout the process of filling the reel (2) in a dynamic and instantaneous way, by acting on the angular speed (10) of the spindles (1) and/or the feeding (9) speed of the thread (6), with the objective of correcting the theoretical twisting on the thread itself (6) and converting it into real twisting.Type: ApplicationFiled: May 9, 2008Publication date: September 9, 2010Inventor: Jordi Galan Llongueras
-
Patent number: 5619849Abstract: A method and apparatus for producing randomly variegated multiple strand yarn in twisting together two or more yarns at a plurality of yarn twisting stations. At each station a pneumatic twisting head is disposed in which randomly turbulent air currents are created in a chamber in the twisting head by compressed air flowing into the chamber from a manifold through bores in the twisting head, thereby randomly twisting together two or more yarns in the chamber. The yarns which have been twisted together are taken up over a plurality of traversing drums commonly mounted on a shaft which is driven by an alternating electric current motor controlled by a control device which operates to start and restart the motor on a predetermined cycle including a variation of the electrical input sufficient to result in randomly unpredictable inertia resistance of the traversing drums to rotational speed variation, thereby creating randomly unpredictable take-up of the yarns to produce non-uniform random twist in the yarns.Type: GrantFiled: August 26, 1994Date of Patent: April 15, 1997Assignee: Caress Yarns, Inc.Inventor: William A. McNeill
-
Patent number: 5109660Abstract: A control system for a ring spinning machine and method wherein yarn is wound in cop-type manner on spinning tubes supported on spindles driven at relatively lower speeds during the beginning and ending stages of the winding operation and relatively greater speeds during the intervening stage of the winding operation. Yarn is applied to the spinning tubes by reciprocating a ring rail or other yarn-carrying member along the spinning tubes with the extent of the reciprocating motion of the ring rail being incrementally shifted along the spinning tubes over the course of the winding operation. The present control system performs the shifting of the ring rail in relatively shorter increments during the intervening stage of the winding operation when spindle speed is relatively increased than during the beginning and ending stages of the winding operation when spindle speed is relatively decreased, which maximizes the yarn capacity of the spinning tubes.Type: GrantFiled: April 12, 1990Date of Patent: May 5, 1992Assignee: Zinser Textilmaschinen GmbHInventors: Herbert Reyer, Thomas Peter
-
Patent number: 4944143Abstract: The invention provides a means of controlling the speed of operation of a material processing apparatus, such as a ring spinning machine in a textile mill. The purpose of the invention is to allow high speed processing, while maintaining a high quality product. In the case of ring spinning for instance, the object is to reduce the incidence of yarn breakages.The method in accordance with the invention includes controlling the speed of operation during a total time for processing a finite quantity of the material, and including the use of an automatic control apparatus preset to change the speed of the driving motor in a series of very small increments throughout a speed change time which is a predetermined percentage of the total time, between two speeds, one of which is a predetermined optimum operating speed and the other of which is a predetermined percentage of the operating speed.Type: GrantFiled: December 5, 1988Date of Patent: July 31, 1990Inventor: Akira Tanaka
-
Patent number: 4918911Abstract: A spinning machine has an electric motor for rotating a bobbin-supporting spindle to build a package of yarn thereon and a funnel for guiding yarn onto the spindle. The spindle is rotatingly driven by an electric motor and the electric motors of the spindle and the funnel are commonly connected to a frequency control means which is, in turn, connected to an electrical power supply means. The torque of the funnel electric motor is a function of a characteristic of the funnel in accordance with the relationship that the funnel is rotated by its electric motor at a lower rate relative to the contemporaneous rate of rotation of the spindle. The apparatus can include a switch assembly selectively movable between leads for selectively connecting the funnel electric motor to the frequency control apparatus to operate the motor or to the electrical power supply means to brake the motor.Type: GrantFiled: December 8, 1988Date of Patent: April 24, 1990Assignee: Zinser Textilmaschinen GmbHInventors: Gerhard Grau, Josef Derichs
-
Patent number: 4531353Abstract: A spinning frame 10 is disclosed for processing a strand at a varying strand movement speed to produce a strand processed with uniform tension. The spinning frame includes a motor 21 and a planetary gear box 30 which operates as a differential having first and second speed input elements formed by the rotation of the gear box housing 31 and a variable speed shaft 36. Housing 31 rotates at a constant speed and shaft 36 at a variable speed determined by the speed of rotation of a motor 50 which is controlled by an input to a variable capacity pump 45. A computer 70 operates through a servo-valve 60 to vary the speed of cylinder 18 to produce a speed required to maintain uniform tension on the strand.Type: GrantFiled: October 5, 1983Date of Patent: July 30, 1985Inventor: Joseph P. Majette
-
Patent number: 4336684Abstract: An assembly of motors designed to drive a ring rail, a bank of spindles and a plurality of draw or delivery rollers in a ring spinning or twisting machine is supplied with three-phase current of a frequency determined by the settings of digitally adjustable frequency selectors independently controlling respective solid state frequency-inverters assigned to the several motors or groups of motors. The selectors include frequency dividers in the output of a common and preferably also adjustable source of timing signals which may be a free-running oscillator or a pulse generator driven by one of the motors acting as a master.Type: GrantFiled: March 24, 1980Date of Patent: June 29, 1982Assignee: Zinser Textilmaschinen GmbHInventors: Max Hartmannsgruber, Horst Wolf
-
Patent number: 4316357Abstract: The method for winding yarn in the form of a cone onto a bobbin carried by a spindle in a spinning or twisting frame consists in passing the yarn to be wound through a traveler mounted on a revolving ring, in lifting and lowering the ring cyclically around the bobbin in order to form the winding cone, and in producing a cyclic variation in the spindle speed in accordance with the cycle of up-and-down motion of the ring support plate.Type: GrantFiled: May 5, 1980Date of Patent: February 23, 1982Assignee: Societe Alsacienne de Constructions MechaniquesInventor: Jacques Le Chatelier
-
Patent number: 4165601Abstract: A yarn-tying device in a thread monitor patrolling a bank of spindles periodically receives enabling signals for at least one if its units from a drive mechanism serving for the vertical reciprocation of a ring rail associated with the spindles. The drive mechanism includes a rotary cam member and a follower member co-operating therewith, one of these members carrying a lug which trips a switch whenever the ring rail is in a position suitable for the operation of the controlled unit. The signal may be electrically transmitted to the moving thread monitor through a contact brush engaging a conductor strip on an overhead guide rail.Type: GrantFiled: March 9, 1978Date of Patent: August 28, 1979Assignee: Zinser Textilmaschinen GmbHInventor: Wolfgang Igel