Presser regulating thumb screw device of a sewing machine
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United States of America Patent
Stats
-
Jan 5, 1999
Grant Date -
N/A
app pub date -
Sep 10, 1996
filing date -
Sep 14, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A presser regulating thumb screw device of a sewing machine screwed into an arm ?2! of the sewing machine and including a presser regulating thumb screw ?18!, the pressure regulating thumb screw ?18! being turned clockwise or counter clockwise for regulating to increase or decrease a pressing force by a presser foot ?6!, wherein the presser regulating thumb screw ?18! comprises a screw body ?8! and a fitting member ?9! fitted in the screw body ?8!, the screw body ?8! is bored in a central axis thereof to form a small diameter fitting hole ?8a!, a large diameter receiving hole having a diameter larger than that of the fitting hole ?8a!, and a spot facing part ?8c! extending from the large diameter hole ?8b! having a diameter larger than that of the large diameter hole ?8b!, the small diameter fitting hole ?8a!, the large diameter fitting hole ?8b! and the spot facing part ?8c! are arranged in an ascending order, and wherein the fitting member ?9! is fixed to the spot facing part ?8c! so as not to turn relative to the spot facing part ?8c!, and the fitting member ?9! has a fitting part ?9b!, the fitting part ?9b! having a different shape other than a circular shape in cross section.
First Claim
Family
International Classification(s)
Cited Art Landscape
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