Title: Hand-operated lock stitch sewing machine

Abstract: A hand-held single-thread lockstitch sewing machine or stitcher for attaching buttons, snaps, bar tacks, or the like, employs a boat-type shuttle for capturing the loop thrown by the needle. A limited length of bottom thread is stored by manually positioning a lever which directs the loop over a finger-like projection in the shuttle to trap the loop. Repositioning the lever will allow the machine to sew normally with the loop passing around the shuttle and picking up the stored thread. Bottom tension is applied by magnetically attracting the shuttle to the carrier wall and passing the bottom thread between the shuttle and the carrier wall.

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Inventors: Ketterer, Stanley Joseph (Middlesex, NJ, US)
Ivanko, Francis (Columbia, PA, US)

Application Number: 571679
Filing Date: 1975-04-25
Publication_date: 1976-05-18
Assignee: The Singer Company (New York, NY)
Primary Class(es): 112/169 112/185, 112/187, 112/195
Other Classes:
US Patent Ref:

400744	Apr, 1889	Bruncker	112/195.
1186518	Jun, 1916	Reece	112/402.
2507814	May, 1950	Rantanen	112/169.
3127859	Apr, 1964	Saltz et al.	112/169.

Other Refs:
Primary Examiner: Schroeder, Werner H.
Assistant Examiner: Cohen, Moshe I.
Attorney: Breen; Marshall J., Bell; Edward L., Castle; Linval B.