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US3580199A
Expired / Lapsed
US
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Embroidery stitching sewing machine
Assignee: Individual
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Filing: 1969-05-05
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Granted: 1971-05-25
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Expires: 1989-05-05
Abstract
Abstract The disclosure relates to an embroidery stitching sewing machine in which a laterally oscillatable needle-bar can be selectively connected to any cam of a plurality of cams for providing zigzag and ornamental stitching, and in which a work fabric feeding device can be automatically controlled by cam means for providing a feeding sequence including forward and rearward steps. Said cam means comprise one cam of such cam track profile to provide a sequence comprising two steps forward and one step backward to produce a stitching wherein in any stitch pitch three sewing stitches are present, the cams of said plurality providing ornamental and utility embroidery and zigzag patterns compatible with said sequence.
Inventors
- 👤 Luigi Vigorelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:30
CPC Classifications
D; D05; D05B; D05B19/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
184 words
In a zigzag sewing machine, in combination, an embroidering device comprising a needle-bar having a needle; drive means for effecting up and down movements of said needle-bar so that said needle makes successive penetrations of a fabric; first rotary cam means and first cam follower means operatively connected with said needle-bar for oscillating the same in opposite transverse strokes between two extreme positions for making transverse opposite strokes in synchronism with said up and down movements so that said needle makes a fabric penetration at the beginning and at the end of opposite transverse strokes and produces transverse stitches; reversible feeding means for feeding the fabric under said needle; and second rotary cam means and second cam follower means operatively connected with said feeding means for effecting cyclical operation of said feeding means so that the fabric is moved in a plurality of steps forward, and then one step rearward during each cycle, said first and second cam means being synchronized so that a step of the fabric takes place between two opposite transverse strokes and between two successive fabric penetrations by said needle.
Claim 2
Dependent Claim
184 words
In a zigzag sewing machine, in combination, an embroidering device comprising a needle-bar having a needle; drive means for effecting up and down movements of said needle-bar so that said needle makes successive penetrations of a fabric; first rotary cam means and first cam follower means operatively connected with said needle-bar for oscillating the same in opposite transverse strokes between two extreme positions for making transverse opposite strokes in synchronism with said up and down movements so that said needle makes a fabric penetration at the beginning and at the end of opposite transverse strokes and produces transverse stitches; reversible feeding means for feeding the fabric under said needle; and second rotary cam means and second cam follower means operatively connected with said feeding means for effecting cyclical operation of said feeding means so that the fabric is moved in a plurality of steps forward, and then one step rearward during each cycle, said first and second cam means being synchronized so that a step of the fabric takes place between two opposite transverse strokes and between two successive fabric penetrations by said needle.
Claim 3
Dependent Claim
60 words
An embroidering device as claimed in claim 1 wherein said first cam means has an axis of rotation and includes cam track portions concentric with said axis and having such a circumferential extension that a straight line stitch is made between two fabric penetrations, and other rising and falling cam track portions by which said opposite transverse strokes are effected.
Claim 4
Dependent Claim
54 words
An embroidering device as claimed in claim 2 comprising adjusting means for circumferentially adjusting at least one of said first and second cam follower means in circumferential direction of the respective cam means so that either a straight line stitch or a transverse zigzag stitch is made during the rearward step of the fabric.
Claim 5
Dependent Claim
33 words
An embroidering device as claimed in claim 1 wherein said feeding means is controlled by said second cam means to move the fabric two steps forward and one step rearward during each cycle.
Claim 6
Dependent Claim
35 words
An embroidering device as claimed in claim 1 wherein said first cam means include a stack of pattern cams; and wherein said first cam follower means cooperates with any selected one of said pattern cams.
Claim 7
Dependent Claim
45 words
An embroidering device as claimed in claim 1 wherein said second cam means includes a feed controlling cam located in said stack and adapted to be selected for engagement with said first cam follower means while being also engaged by said second cam follower means.
Claim 8
Dependent Claim
54 words
An embroidering device as claimed in claim 1 wherein said second cam means include a feed controlling cam having a cam track with projecting and recessed portion, each recessed portions having twice the circumferential extension than each projecting portion so that said fabric moves two steps forward and one step rearward during each cycle.
Claim 9
Dependent Claim
85 words
An embroidering device as claimed in claim 1 wherein said feeding device includes adjusting means for adjusting the length of said stitches and including a manually opErable knob; comprising means connecting said knob with said second cam follower means so that the same is spaced from said second cam means and inoperative in one position of said knob; and wherein said knob has other positions for operating said adjusting means and for placing said second cam follower means in engagement with said second cam means.
References Cited (Backward Citations)
US2653557A
Cited
US2976830A
Cited
US3253559A
Cited
US3065716A
Cited
US3221687A
Cited
US3433092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |