Upper thread guide mechanism for sewing machines

Details Upper thread guide mechanism for sewing machines Upper thread guide mechanism for sewing machines

D - Textiles, Paper

05

B

112/23

D05B 49/02 (2006.01)

Patent

CA 1263568

ABSTRACT OF THE DISCLOSURE An upper thread guide mechanism for a sewing machine is disclosed which includes a slit which lies in a vertical plane and extends from an upper surface of the sewing machine frame to a front surface. A tension device, a thread take-up spring, and upper and lower thread guides are disposed along the direction in which the slit extends. A thread take-up lever is installed so that it can reciprocate horizontally across the space between the pair of thread guides. The placement of the thread in the tension device, the thread take-up spring and the two thread guides can be attained simply by pulling the upper thread vertically downward through the slit. When the thread take-up lever is reciprocated, during its forward stroke it arrests the portion of the thread positioned between the two thread guides and draws it into a V-form. During its return stroke, the thread take-up lever releases the thread to allow the latter to loosen into a loop form.

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