US3738292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing apertures for jetted pockets on cut parts of garments
Assignee: Pfaff Industriemaschinen GmbH
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Filing: 1972-06-14
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Granted: 1973-06-12
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Expires: 1992-06-14
Abstract
Abstract Arrangement for producing jet openings for jetted pockets in cut pieces of garments using a displaceable work piece clamp on a two-needle sewing machine having a pleat guide for the jet strip, a severing cutter for the longitudinal slit operating between the needles and cutting means for producing the angular cuts at the ends of the longitudinal slits, said machine being rotatable about a pivot axis which coincides with the axis of symmetry of the needles and which may be latched in predetermined angular positions (R, M, L), and a number of sets of angular cutters corresponding in number to the angular positions, which sets of cutters comprise angular cutters that are individually guided.
Inventors
- 👤 E Willenbacher
- 👤 P Hintzen
- 👤 F Jehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:59
CPC Classifications
D; D05; D05B; D05B3/00; D05B3/10; D05D; D05D2203/00; D05D2207/00; D05D2207/02; D05D2209/00; D05D2209/06; D05D2303/00; D05D2303/02; D05D2303/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
181 words
Arrangement for producing jet openings for jetted pockets on cuts of garments comprising a displaceAble work blank clamp and a sewing machine having two needles and an arm shaft, pleat guide means for a jet strip in front of said needles, a severing cutter for a longitudinal slit disposed for operation between said needles and cutting means for producing angular cuts at the ends of the longitudinal slits, a pivot stud defining an axis of rotation coinciding with the axis of symmetry of said needles around which the machine is rotatable, said work blank clamp extending rearwardly of said machine, latching means operative to latch said machine in a plurality of angular positions (R, M, L) related to the direction of feed of said work blank clamp and the longitudinal axis of said arm shaft, and a plurality of sets of angular cutters (42, 43, 44) disposed on said machine in the path of movement of said work blank clamp and corresponding in number to the number of angular positions, each of said sets of cutters comprising separately operable angular cutters.
Claim 2
Dependent Claim
181 words
Arrangement for producing jet openings for jetted pockets on cuts of garments comprising a displaceAble work blank clamp and a sewing machine having two needles and an arm shaft, pleat guide means for a jet strip in front of said needles, a severing cutter for a longitudinal slit disposed for operation between said needles and cutting means for producing angular cuts at the ends of the longitudinal slits, a pivot stud defining an axis of rotation coinciding with the axis of symmetry of said needles around which the machine is rotatable, said work blank clamp extending rearwardly of said machine, latching means operative to latch said machine in a plurality of angular positions (R, M, L) related to the direction of feed of said work blank clamp and the longitudinal axis of said arm shaft, and a plurality of sets of angular cutters (42, 43, 44) disposed on said machine in the path of movement of said work blank clamp and corresponding in number to the number of angular positions, each of said sets of cutters comprising separately operable angular cutters.
Claim 3
Dependent Claim
72 words
Arrangement in accordance with claim 1 comprising a stitch plate on said machine and a material support or base plate, a pivot stud having an axis coinciding with the axis of symmetry of said needles, a stationary plate on said machine received on said pivot stud and having a sliding surface for said work blank clamp and a recess for the passage of said angular cutters, and extending over said base plate.
Claim 4
Dependent Claim
27 words
Arrangement in accordance with claim 1, where each set of angular cutters comprises pairs of cutters and common guide means are provided for said pairs of cutters.
Claim 5
Dependent Claim
25 words
Arrangement in accordance with claim 1, where said sets of angular cutters are disposed in a spider formation at equal distances from said pivot axis.
Claim 6
Dependent Claim
43 words
Arrangement in accordance with claim 1, where cutters of sets of angular cutters that are disposed at an angle deviating from 90* and defined between the direction of feed of the work blank clamp and the arm shaft have legs of unequal lengths.
Claim 7
Dependent Claim
26 words
Arrangement in accordance with claim 2 comprising an arcuate rail and rollers on said machine laterally of said pivot stud supporting said machine on said rail.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |