Sewing – Special machines – Buttonhole
Patent
1978-08-30
1979-11-06
Feldbaum, Ronald
Sewing
Special machines
Buttonhole
112113, 11212111, 112304, 112311, D05B 300
Patent
active
041731913
ABSTRACT:
A device for feeding materials in a feed direction for operations thereon, such as sewing buttons or buttonholes, either directly on the material or onto separate strips of material which are fed thereto. The device includes means for clamping the material which is to be sewn so that it does not shift as it is moved through a stitching area. A movable carriage is mounted on a support frame for movement backwardly and forwardly in respect to the direction of material feeding, and it carries a lower endless conveyor arranged beneath and cooperable with an upper endless conveyor so that the endless belt stretched thereon may be biased together during the feeding operation so that the material is clamped along its entire length as it is fed with the movement of the carriage. The apparatus includes a separate clamping device for clamping the forward edge of the material at the end thereof which is beyond the sewing needle operating area and this is also movable with the carriage. The carriage is moved by a friction feed arrangement which includes a rotatable drive shaft which is engaged by a friction drive carried by the carriage and which includes rollers which may be oriented so as to bear against the shaft at an angle on its periphery so as to cause an advancing movement of the friction drive with the carriage at a rate controlled by the positioning of the friction rollers.
REFERENCES:
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patent: 2297295 (1942-09-01), Flintjer
patent: 2899919 (1959-08-01), Myska
patent: 3073267 (1963-01-01), Reeber et al.
patent: 3082719 (1963-03-01), Zeitlin
patent: 3087440 (1963-04-01), Flach et al.
patent: 3127857 (1964-04-01), Medoff et al.
patent: 3322083 (1967-05-01), Perrella et al.
patent: 3334600 (1967-08-01), Conner
patent: 4114545 (1978-09-01), Manabe et al.
Eisele Apparate- und Geratebau GmbH
Feldbaum Ronald
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