Device for indicating thread breakage particularly in spinning machines

Claim 1

IN TEXTILE MACHINES SUCH AS SPINNING MACHINES, TWISTERS, OR THE LIKE, HAVING ROTARY SPINDLES, A DEVICE COM, PRISING, IN COMBINATION A THREAD EYE MEMBER ASSOCIATED WITH ONE OF SAID SPINDLES, AT LEAST A PART OF SAID THREAD EYE MEMBER BEING MOVABLE AND ADAPTED TO GUIDE THE THREAD, WHICH IS TO BE CONTROLLED AS TO BREAKAGE, RELATIVE TO SAID SPINDLE, AN ENERGY STORAGE MEANS ADAPTED TO ACT ON SAID MOVABLE PART, SAID THREAD ENGAGING SAID MOVABLE PART AND URGING IT DURING WINDING OF THE THREAD ON THE SPINDLE AGAINST THE ACTION OF SAID ENERGY STORAGE MEANS INTO A LIMITING POSITION IN WHICH THE THREAD TENSION AND THE COUNTERACTION OF THE ENERGY STORAGE MEANS BALANCE EACH OTHER, THREAD BREAKAGE INDICATING MEANS, SAID THREAD EYE MEMBER COMPRISING A STATIONARY PART IN ADDITION TO SAID MOVABLE PART, SAID PARTS CONSISTING OF MOVABLE AND STATIONARY LEVERS, SAID LEVERS BEING ARCUATELY FORMED AT LEAST IN A PART OF THEIR LENGTH, SAID ARC SURROUNDING SAID THREAD IN THE FORM OF AN EYE, SAID MOVABLE LEVER BEING ROTATABLE, A PIVOT CARRYING SAID LEVER, A BEARING FOR SAID PIVOT, A HOUSING ADAPTED TO ACCOMMODATE PARTS OF THE DEVICE, A CHAMBER PROVIDED IN SAID HOUSING BEING ADAPTED TO RECEIVE THE BEARING FOR SAID PIVOT AND SAID MOVABLE LEVER ITSELF, A SLOT EXTENDING THROUGH AN OUTSIDE BOUNDARY SURFACE OF THE HOUSING INTO SAID CHAMBER, OPPOSING HOUSING WALLS DEFINING SAID CHAMBER BEING FORMED WITH GROOVES, A FLEXIBLE STRIP MEMBER ADAPTED TO BE INSERTED WITH ITS EDGES INTO SAID GROOVES AND TO BE HELD THEREIN, SAID STRIP MEMBER BEING FURTHER ADAPTED TO PROVIDE A DUST-TIGHT SEAL FOR PARTS OF THE DEVICE DISPOSED IN SAID CHAMBER TOWARDS THE OUTSIDE AND TO EXPOSE THEM QUICKLY WHEN THE STRIP IS PULLED OUT OF THE GROOVES.