Sewing – Elements – Tensioning
Patent
1992-03-02
1993-03-09
Crowder, Clifford D.
Sewing
Elements
Tensioning
242150R, D05B 4702, B65H 5922
Patent
active
051918471
ABSTRACT:
A tension regulating device can set an indicating value of a thread tension. The tension regulating device comprises a regulating nut which is screwed into the male portion of a tension regulating shaft for compressing the tension regulating spring and a regulating dial having scales. The regulating dial is rotatable to turn the regulating nut to set the tension of a thread, which is held by the tension discs in response to the turning position of the regulating nut. The tension regulating device further comprises a regulating dial stop retained by a step portion of the tension regulating shaft and a short cylindrical member fixedly engaged in the cylindrical portion of the tension regulating shaft for clamping the regulating dial stop. The short cylindrical member has spline grooves defined at the outer periphery thereof. A cap has an indicating needle corresponding to one of the scales of the regulating dial, the cap having an outward directed flange portion defined at one end thereof for engaging in the spline grooves of the short cylindrical member whereby the regulating dial is rotatably clamped between the outward directed flange portion of the cap and the regulating dial stop.
REFERENCES:
patent: 267563 (1882-11-01), Mitchell
patent: 1820119 (1931-08-01), Chason
patent: 2131005 (1938-09-01), Chason
patent: 2518703 (1950-08-01), Marsac
patent: 2937605 (1960-05-01), Dunn et al.
patent: 2955775 (1960-10-01), Johnson
patent: 2993456 (1961-07-01), Heebst
patent: 3366083 (1968-01-01), Ketterer et al.
Kamewada Makota
Kojima Shinji
Crowder Clifford D.
Jay Theodore
Lewis Paul C.
The Singer Company N.V.
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