DEVICE FOR THREAD SUPPLY WITH ROTARY DRUM AND DEVICES FOR DETERMINATION OF THREAD TURNS ON DRUM Russian patent published in 2020 - IPC D04B15/48 B65H51/20 

FIELD: textile.

SUBSTANCE: proposed invention relates to device (10) for filament supply of storage type, for example, for use in textile industry, containing: housing (12) carrying rotatable drum (16), on which coils of thread coming from bobbin are wound; a tension sensor for determining the tension value of the coiled thread and means for determining the amount of thread gathered on said drum (16); light-reflecting element (25) located on said drum or functionally connected to it; where such element (25) reflects light generated by light source (30) installed on bearing structure (27) located near rotated drum (16); where said bearing structure (27) is connected to means (31) adapted to determine light reflected by said reflecting element (25A); where said reflected light varies depending on the amount of thread wound on said rotated drum (16); wherein by means of said determination it is possible to determine the amount of such thread.

EFFECT: detector (31) is a light-sensitive component which directly receives light reflected by said reflecting element (25A) along entire surface (23) of drum (18); wherein by means of said component it is possible to determine density of threads on the drum.

5 cl, 6 dwg