Textile machine shut-off device
AssigneeZinser Textilmaschinen GmbH
InventorMax Hartmannsgruber
Life of this patent
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Abstract
A textile machine such as a spinning machine has, for each spindle, a comparator which senses the voltage at a motor driving said spindle and compares it with a reference voltage. Upon the comparator sensing such a change in the motor voltage as would be consistent with breakage of the material being worked on the machine (e.g. a roving passing towards the spindle and being spun into a thread), it operates a switch which serves both to switch off the motor driving the spindle and to arrest the material passing to the spindle.
Claims9
A textile machine, comprising a rotatably supported wind-up bobbin, a first electric motor drivingly coupled to said wind-up bobbin, a rotatably supported supply bobbin which supplies a thread to said wind-up bobbin, drive means for effecting rotation of said supply bobbin, comparator means for sensing a parameter of the electric current supplied to said first electric motor and for comparing said parameter to a reference value, switch means responsive to said comparator means and cooperable with said drive means for automatically interrupting said rotational driving of said supply bobbin by said drive means in response to a change in said sensed parameter relative to said fixed value.
Dependencies are inferred from the claim text.