Transmission mechanism in a driving means for needle of sewing m

Details Transmission mechanism in a driving means for needle of sewing m Transmission mechanism in a driving means for needle of sewing m

1977-12-30

1979-09-18

Hunter, H. Hampton

Sewing

Elements

Driving mechanisms

74104, D05B 5514

Patent

active

041679130

ABSTRACT:
A transmission mechanism in a driving means for the needle of sewing machines. A needle holder having a needle secured thereto and fitted on a needle guide rod so that it is vertically oscillated thereon is joined to an oscillatory arm oscillatable along the needle guide rod by slidably fitting a front end portion of the latter in a passage provided in an end portion of a horizontal shaft which is fitted in the needle holder so as to be rotated therein to some extent. The passage in the end portion of the horizontal shaft is made at right angles thereto. The horizntal shaft has a vertical passage the diameter of which is large enough to prevent the needle guide rod passed therethrough from being slided on the inner surface thereof. The needle holder has a sufficiently large slide surface with respect to the needle guide rod.

REFERENCES:
patent: 2799236 (1957-07-01), Marforio et al.
patent: 3645221 (1972-02-01), Hirayama
patent: 3731643 (1973-05-01), Middlebrook
patent: 3745951 (1973-07-01), Marforio
patent: 4037548 (1977-07-01), Hirayama

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