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AssigneeAktiebolaget IRO
InventorsEric Carlsson, Karl I. Gefvert, Thomas Hjalmarsson, Anton Kerff, Karel Pejchal, Lars Wide
Estimating the term…
A transport device is provided which is driven by an electromotor and on which more than two bobbin supports are mounted and are movable in common such that the respective bobbin to be unwound can be brought into the required association with respect to a stationary thread eye. A thread scanning device is provided adjacent the unwound thread for detecting the thread as it jumps from the bobbin just emptied to the next bobbin. This thread scanning device is connected with the electromotor such that, when the thread scanning device responds, the motor moves the transport device to such an extent that the next bobbin is brought into the required association with respect to the stationary thread eye.
In a device for holding yarn bobbins and having at least two bobbin supports each for holding one bobbin, whose thread ends are tied together to permit them to unwind in succession without interruption, and a stationary thread eye which has a specific association with respect to the bobbin which is unwinding at any given moment, the improvement comprising a movable transport device on which more than two bobbin supports are mounted and are movable in common such that the respective bobbin to be unwound can be brought into an unwinding position having a required association with respect to the stationary thread eye, motor means connected to the transport device for moving same, and a thread scanning device provided adjacent the thread as unwound from the bobbin located in said unwinding position for detecting the thread as it jumps from the bobbin just emptied to the next bobbin, means connecting the thread scanning device with the motor means such that, when the thread scanning device detects the unwound thread jumping to the next bobbin, the motor means is energized to move the transport device to such an extent that the next bobbin is moved into the unwinding position so as to have the required association with respect to the stationary thread eye.
In a device for holding a plurality of yarn bobbins whose thread ends are tied together to permit them to unwind in succession without interruption, and a stationary thread eye having a specific positional relationship with respect to the bobbin which is being unwound at any given moment, the improvement comprising movable transport means defining an endless path of movement, a plurality of bobbin supports mounted on said transport means for movement therewith unidirectionally along said path, said plurality of bobbin supports including more than two bobbin supports, said bobbin supports being uniformly spaced apart along said path, drive means drivingly interconnected to said transport means for causing intermittent step-like movement thereof so that the bobbin supports containing thereon a thread-containing bobbin are sequentially moved into an unwinding position having a required association with respect to the stationary thread eye, first means for detecting the withdrawn thread as it jumps from a just-emptied bobbin as located at said unwinding position to the next bobbin, said first means causing activation of said drive means so that said transport means is moved whereby the next bobbin is moved into said unwinding position, and second means for sensing the movement of said next bobbin into said unwinding position and for de-energizing said drive means and stopping said transport means upon said next bobbin reaching said unwinding position.
Dependencies are inferred from the claim text.