Sewing machine with a cooling system

Details Sewing machine with a cooling system Sewing machine with a cooling system

1978-01-05

1979-05-15

Schroeder, Werner H.

Sewing

Elements

Cooling

D05B 7100

Patent

active

041541820

ABSTRACT:
The sewing machine includes a drive shaft which is rotatably mounted in a housing and is connected to a needle to reciprocate the needle at a stitching area in order to effect sewing of material. A fan blade or impeller is affixed to the main shaft for rotation therewith, and it rotates in a chamber in the housing and is constructed with a central inlet opening to pull in air centrally and to discharge it radially downwardly into a lower extension below the oil pan of the sewing machine. The lower extension includes a plurality of ribs extending downwardly from the bottom wall of the oil pan which forms heat exchanger surfaces over which air from the blower is directed. The heat exchange surfaces are arranged in the form of longitudinally extending ribs which extend substantially parallel to the shaft and they define air flow channels therebetween.

REFERENCES:
patent: 3225824 (1965-12-01), Wartenberg
patent: 3771478 (1973-11-01), Tranquilla et al.
patent: 3779188 (1973-12-01), Maroforio
patent: 4062310 (1977-12-01), Gauch et al.

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