Sewing machine

Details Sewing machine Sewing machine

D - Textiles, Paper

05

B

112/86

D05B 29/02 (2006.01) D05B 71/00 (2006.01)

Patent

CA 1168519

ABSTRACT OF THE DISCLOSURE In a sewing machine having a presser foot and a pressure imparting member for applying a downward pressure to the presser foot, there is disposed, in an inner chamber of a frame, an oil pump drivingly connected to a main shaft. The oil pump having an inlet port for drawing the oil from an oil reservoir and an outlet port for deliverying the oil under the pressure corresponding to the speed of the main shaft. Also a presser actuating device is provided between the oil pump and the presser foot and designed to apply an additional downward pressure to the presser foot by means of the oil from the outlet port so as to increase the down- ward pressure of the presser foot.

376615

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