Sewing – Elements – Presser devices
Patent
1984-03-06
1986-02-04
Schroeder, Werner H.
Sewing
Elements
Presser devices
1122621, 112314, D05B 2724, D05B 2902
Patent
active
045678383
ABSTRACT:
The lifting device (19) of the presser foot (21) of a sewing machine is operable through the use of an operating axle (18) and a toggle lever (20). The operating axle (18) is connected to a slide (15) capable of engaging and disengaging a coupling mechanism (10). The coupling mechanism (10) is arranged between the lifting device (6) of the feed dog (3) and the oscillating drive means (7) of the lifting device. During the lifting of the presser foot (21) by means of the toggle lever (20), the coupling pin (12) of the coupling mechanism (10) is simultaneously placed out of engagement with the driven oscillating lever (8) by means of the slide (15). Thus the drive of the lifting device (6) is interrupted, and a spring (13) pulls the feed dog (3) into its lowered position. Thus the manipulation of the sewing material is made possible without the feed dog presenting an obstacle.
REFERENCES:
patent: 2420697 (1947-05-01), Best
patent: 2682242 (1954-06-01), Palme et al.
patent: 3353511 (1967-11-01), Marino
patent: 3611961 (1971-10-01), Lopez
patent: 3777686 (1973-12-01), Hage
patent: 4426947 (1984-01-01), Marshall
Falik Andrew M.
Fritz Gegauf Aktiengesellschaft Bernina-Nahmaschinenfabrik
Schroeder Werner H.
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