Sewing – Special machines – Darning
Patent
1984-06-13
1985-09-17
Hunter, H. Hampton
Sewing
Special machines
Darning
11212115, 112310, D05B 2100
Patent
active
045413487
ABSTRACT:
An automatic sewing machine for producing a seam having a fastening seam and a tacking seam is installed with a sewing head having a bearing bracket with two bearings which are arranged at a distance from each other for receiving a reciprocating needle bar including a needle. A sewing head comprises a drive mechanism to selectably impart jogging movements to the needle bar, wherein the movements form a transmitting ratio with respect to the reciprocating movement of the needle of 1:1 or 1:2.
In order to render possible a shifting of the needle jogging movement during the operation of the machine and under full load, the two bearings guidingly receiving the reciprocating needle bar are oscillatingly drivable independently of each other wherein one bearing is oscillatable at a transmitting ratio of 1:2 and the other bearing is oscillatable at a transmitting ratio of 1:1. Both bearings are drivingly connected to individual drive parts each of which is independently engageable.
REFERENCES:
patent: 3830175 (1974-08-01), Levor
patent: 3983825 (1976-10-01), Dobner et al.
patent: 4088085 (1978-05-01), Hager
patent: 4160423 (1979-07-01), Scholl et al.
patent: 4282819 (1981-08-01), Sartor
patent: 4347797 (1982-09-01), Scholl et al.
Hunter H. Hampton
Kochs Adler AG
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