Vertical rotary shuttle of sewing machine


Application Number: 00108252
Application Date: 2000.04.30
Publication Number: 1273295
Publication Date: 2000.11.15
Priority Information: 1999/5/7 JP 127172/99
International: D05B57/10
Applicant(s) Name: Juki Corp.
Address:
Inventor(s) Name: Watanabe Mitsuo;Imai Isamu
Patent Agency Code: 72001
Patent Agent: zhang tianan
Abstract To improve sewing work efficiency by displacing the pointed end of an outer shuttle in a specified form in a vertical full rotation shuttle provided with a shuttle body for holding a shuttle bobbin case and an upper spring the preventing the pointed end for catching a needle thread loop and the needle thread loop caught by the pointed end from separating from the root part of the pointed end. This vertical full rotation shuttle has a rotating hook 2 fixed to a lower shaft rotated interlocking with a main shaft of a sewing machine and a shuttle body 9 holding a shuttle bobbin case, and rotating hook 2 is provided with an upper spring 7 for preventing a pointed end 5 for catching a needle thread loop and a needle thread loop caught by the pointed end from separating from the root part of the pointed end 5. In this case, the pointed end 5 of the rotating hook 2 is provided to agree with an upper spring tip extending from the center of rotation of the rotating hook 2 toward the outer periphery. The fitting position of a needle 4 is set above a needle bar and fixed. Thus, the needle thread loop can be surely caught by the pointed end 5 of the rotating hook 2 so as to improve the commodity value of a sewn product and the cloth setting efficiency.