Sewing – Elements – Presser devices
Patent
1981-12-17
1983-06-21
Schroeder, Werner H.
Sewing
Elements
Presser devices
D05B 2902
Patent
active
043888860
ABSTRACT:
A reduced load presser bar mechanism having a separate secondary spring that may easily be disengaged or engaged by the operator to counter balance the biasing force of the primary presser bar spring thereby reducing the normal force exerted by the presser foot on the work piece to near zero.
REFERENCES:
patent: 2139426 (1938-12-01), Toskey et al.
patent: 2422820 (1947-06-01), Best
patent: 3294047 (1965-04-01), Graham
patent: 3329115 (1965-04-01), Ciecior
patent: 4342272 (1982-08-01), Transue et al.
Bell Edward L.
Davis David L.
Falik Andrew M.
Schroeder Werner H.
Smith Robert E.
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