Patents Assigned to Maschinenfabrik Carl Zangs Aktiengesellschaft
  • Patent number: 4254721
    Abstract: A device for the intermittent interruption of the embroidery needle movement on automatically controlled embroidery- or sewing- machines, particularly multiple head automation embroidery machines, with at least one needle bar, the latter being driven by means of a crank rod and a crank from a drive shaft. The crank rod is pivotally connected with a drive carriage. By means of a pawl the drive carriage can be connected with a driver which is fastened on the needle bar. The driver in its turn is able to be secured in an upper deadpoint position by means of a controllable holding pawl with the simultaneous separation or disconnection of the drive carriage.
    Type: Grant
    Filed: November 7, 1978
    Date of Patent: March 10, 1981
    Assignee: Maschinenfabrik Carl Zangs Aktiengesellschaft
    Inventors: Wolfgang Teetz, Alfred Desprez
  • Patent number: 4254724
    Abstract: A method for the determination of the switching moments for special functions of automatic embroidery, straight-stitching-and sewing-machines with which the electrical signals which determine the switching moment are formed by logical switching operations in an electric or electronic control.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: March 10, 1981
    Assignee: Maschinenfabrik Carl Zangs Aktiengesellschaft
    Inventor: Hans Conrads
  • Patent number: 4208975
    Abstract: A multi-embroidery machine with a common carrier for the individual embroidery frames, the carrier being mounted moveably in the longitudinal axis of the embroidery machine as well as perpendicularly thereto and being adjustable by a pantograph drive; displacement movements of the pantograph drive, which are executed by a pantograph bar (which bar extends parallel to the carrier behind the sewing heads), are transmitted to the embroidery frame carrier by connection struts. For the longitudinal movement of the embroidery frames as well as for the transverse movement, one data carrier-controlled drive each is provided, which data carrier-controlled drives are controlled directly by the pantograph drive, and the displacement movements of the drives are fed to the pantograph bar.
    Type: Grant
    Filed: October 3, 1978
    Date of Patent: June 24, 1980
    Assignee: Maschinenfabrik Carl Zangs Aktiengesellschaft
    Inventor: Wolfgang Teetz
  • Patent number: 4054098
    Abstract: Embroidering machine with a needle drive mechanism for color changeover, where each of a number of embroidering stations has a number of needles, one needle rod being working, i.e., engageable by a drive bar, all others being non-working and retained by a retaining bar, which also deflects the latch levers of these needle rods and which has a gap in the working plane for the working needle rod. In that gap is also arranged a solenoid controlled pivotable control pawl which, in its normal position, does not touch the working needle rod, and which, in its actuated position, bridges the gap of the retaining bar, thereby retaining the working needle and disengaging its latch lever from the drive bar. The needle bar, which carries all the needle rods, can then shift the needle rods into and out of the retaining bar gap.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: October 18, 1977
    Assignee: Maschinenfabrik Carl Zangs Aktiengesellschaft
    Inventors: Franz Hoever, Wolfgang Teetz, Jurgen Bretschneider
  • Patent number: 4052945
    Abstract: A pattern control mechanism for embroidering machines of the type which use punched tape and a gear-type analog computer with input cam slides for the generation of pattern movements in a large number of different magnitudes, the improvement relating to the cam slide driving mechanism, where pivotable horizontal slide pushers which are attached to the cam slides are selected vertically by transversely moving selector bars whose position is determined by feeler needles of the punched tape sensing device, and where the raised non-selected slide pushers remain back, while the lowered selected ones are engaged by a reciprocating pusher drive bar. The selector bars, which execute a vertical approach motion, have selector teeth which prevent the simultaneous drive engagement of both cam slides.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: October 11, 1977
    Assignee: Maschinenfabrik Carl Zangs Aktiengesellschaft
    Inventor: Wolfgang Teetz