Sewing – Special machines – Darning
Patent
1974-11-06
1976-07-20
Schroeder, Werner H.
Sewing
Special machines
Darning
112203, D05B 1900
Patent
active
039700143
ABSTRACT:
An automatic sewing machine is disclosed which includes a position control device or a device to align automatically the edges of sheet materials to be joined as they are fed toward the needle. The device comprises a sensor unit for detecting the side edges of the upper and lower sheet materials to be joined, a manipulator unit comprising a pair of upper and lower manipulator arms which displace traversely the upper and lower sheet materials independently of each so as to align the side edges thereof, and a control unit which controls the timing of the operation of the manipulator unit to the operations of various mechanisms of the sewing machine such as an automatic feed reverse mechanism, an automatic thread cutting mechanism and so on. The seam formed is spaced apart from the aligned edges exactly by a predetermined distance or margin which may be selectively varied.
REFERENCES:
patent: 2947057 (1960-08-01), Meagher, Jr.
patent: 3013513 (1961-12-01), Judelson
patent: 3417718 (1968-12-01), Andersson
patent: 3461302 (1969-08-01), Benson et al.
patent: 3827381 (1974-08-01), Baanstra et al.
patent: 3867889 (1975-02-01), Conner, Jr.
Chano Takashi
Masuda Koji
Jecies Saul
Kayabakoyo-Kabushiki-Kaisha
Nerbun Peter
Schroeder Werner H.
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