Sewing – Elements – Driving mechanisms
Patent
1980-02-01
1981-11-24
Hunter, H. Hampton
Sewing
Elements
Driving mechanisms
D05B 5516
Patent
active
043017568
ABSTRACT:
An embroidery machine having a plurality of needle bars mounted parallel to each other for the working of different types and colors of threads, with automatic change of the needle bars driven at the time by a drive shaft. A plurality of needle bars are movably mounted adjacent each other in a common needle bar block which is displaceable transversely to the embroidery movement. A driver is fastened on each needle bar. A drive carriage is movably guided on a guide bar arranged parallel to the needle bars. A drive carriage which is driven from the drive shaft by means of a connecting rod and a crank can be coupled by means of a switch pawl with a contact piece which is also movably guided on the guide bar. The driver of each needle bar is provided with a roller which can be selectively inserted into a fork-shaped recess in the contact piece. On each side of the upper dead-center position of the contact piece there is a separate fixed guide cam for the rollers of the needle bars which are located outside the embroidery position.
REFERENCES:
patent: 3884165 (1975-05-01), Tajima
patent: 4054098 (1977-10-01), Hoever et al.
Desprez Alfred
Teetz Wolfgang
Farber Martin A.
Hunter H. Hampton
Maschinenfabrik Carl Zangs Aktiengesellschaft
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