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US 5,855,177 AGranted
Presser regulating thumb screw device of a sewing machine
AssigneeThe Singer Company
InventorsKoichi Nakayama, Shinji Kojima
Life of this patent
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AssigneeThe Singer Company
InventorsKoichi Nakayama, Shinji Kojima
Estimating the term…
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.
A presser regulating thumb screw device of a sewing machine screwed into an arm 2! of a sewing machine and including a presser regulating thumb screw 18!, said presser regulating thumb screw 18! being turned clockwise or counterclockwise for regulating to increase or decrease a pressing force by a presser foot 6!, wherein said presser regulating thumb screw 18! comprises a screw body 8! and a fitting member 9! fitted in said screw body 8!, said screw body 8! is bored in a central axis thereof to form a small diameter fitting hole 8a!, a large diameter receiving hole 8b! having a diameter larger than that of said fitting hole 8a! and a spot facing part 8c! extending from said large diameter receiving hole 8b! having a diameter larger than that of said large diameter receiving hole 8b!, said small diameter fitting hole 8a!, said large diameter receiving hole 8b! and said spot facing part 8c! are arranged in an ascending order, and wherein said fitting member 9! is fixed to said spot facing part 8c! so as not to turn relative to said spot facing part 8c!, and said fitting member 9! has a fitting part 9b!, said fitting part 9b! having a different shape other than a circular shape in cross section.
Dependencies are inferred from the claim text.