Handwheel modified for improved lubrication and cooling

Details Handwheel modified for improved lubrication and cooling Handwheel modified for improved lubrication and cooling

1983-09-21

1986-02-25

Schroeder, Werner H.

Sewing

Elements

Lubricating

384134, 416 60, D05B 7100

Patent

active

045720924

ABSTRACT:
A sewing machine has a housing and a mechanism in the housing for actuating the sewing elements of the machine. The mechanism includes a rotating shaft with a drive end which protrudes from the housing and carries a handwheel. The handwheel has a surface which is proximate to the housing to provide a thin space between the surface and the housing. Wheel rotation during machine operation causes centrifugal movement of air in the space toward the circumference of the space. The wheel has openings which supply air to the space to cool the wheel and prevent the aspiration of fluids from the housing by the centrifugal movement of air in the space.

REFERENCES:
patent: 1999978 (1935-04-01), Myers
patent: 2879733 (1959-03-01), Pierce
patent: 3478709 (1969-11-01), Fischbein et al.
patent: 3644004 (1972-02-01), Hand
patent: 3650582 (1972-03-01), Casey
patent: 4004528 (1977-01-01), Adams et al.
patent: 4062310 (1977-12-01), Gauch et al.
patent: 4145985 (1979-03-01), Klundt
patent: 4340014 (1982-07-01), Kinchweger

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