Sewing – Special machines – Darning
Patent
1985-02-15
1986-06-17
Feldbaum, Ronald
Sewing
Special machines
Darning
112102, 112308, D05C 2100, D05C 904
Patent
active
045949549
ABSTRACT:
A sewing device having a sewing head including a rotary housing and a control device for controlling the rotary movement of the housing and for generating a two-axis-relative movement between the workpiece to be sewn and the rotary housing. The latter is tiltable about the needle axis and pivoted by means of a hollow shaft. Within the rotary housing there are arranged a needle bar with a needle reciprocatingly driven by a crank, a thread take-up lever for handling a needle thread and drive means for operably moving up and downwardly a presser foot and occasionally a thread tensioner. In order to supply the required drive means inside of the rotary housing with energy without obstruction of the rotatability of the rotary housing there is provided a rotary coupling concentrically arranged with respect to the hollow shaft, at which the rotary coupling is also formed with an coaxial bore for the needle thread. The energy to be supplied can be pressurized air which also can be used to operate a Venturi-nozzle as to bring in the needle thread into the bore.
REFERENCES:
patent: 1049520 (1913-01-01), Noble
patent: 3497780 (1970-02-01), Leenhouts
patent: 3515080 (1970-06-01), Ramsey
patent: 4088085 (1978-05-01), Hager
patent: 4347797 (1982-09-01), Scholl et al.
patent: 4373458 (1983-02-01), Dorosz et al.
Feldbaum Ronald
Kochs Adler AG
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