Thread cutting mechanism for a sewing machine

Sewing – Elements – Thread cutting – severing or breaking

Patent

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Details

D05B 6500

Patent

active

040540995

ABSTRACT:
A thread cutting mechanism is adapted to be attached by a bracket to a portion of the body of a sewing machine. The mechanism includes a cylindrical hollow tube on the peripheral wall of which the bracket is fixed, along the length of which a guide slot or groove of a given length is formed, and within which a compression spring is inserted. The tube is slidably engaged along its inner wall with an elongated operation rod having both ends projecting outwardly from the corresponding ends of the tube so as to enter into the center of the compression spring and having a pin slidably engaged in the guide slot or groove of the tube and normally pressed against the rear end of the guide slot or groove through the action of the compression spring. The front end of the operation rod is fitted with a cutter for severing a sewing machine thread. The thread cutting mechanism of the above-mentioned construction enables a portion of the thread which completes a required stitching work with the sewing machine to be easily cut off by the cutter, by pushing the operation rod in the forward direction by the stroke defined by the length of the guide slot or groove against the action of the compression spring and then releasing the operation rod so that the force exerted by the spring is removed.

REFERENCES:
patent: 118467 (1871-08-01), Lord
patent: 3186367 (1965-06-01), Greco
patent: 3565026 (1971-02-01), Goosey

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