Patent US3600786A successfully refreshed from Google Patents.
US3600786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machines for applying sliders to slide fasteners
Assignee: LYSTA
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Filing: 1969-03-20
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Granted: 1971-08-24
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Expires: 1989-03-20
Abstract
Abstract The invention relates to a machine for applying sliders to a slide fastener blank in the form of two continuous tapes with interengaging rows of fastening elements alternating with blank zones where a slit is formed between the tapes. The machine comprises a pair of spreading legs, the ends of which lie close together to form a wedge capable of penetrating through the slit between the tapes and thereafter being movable away from each other to spread the tapes apart for receiving a slider therebetween. The machine also comprises a spreading finger introducible between the tapes to spread them further apart so as to initiate disengagement of the fastening elements first entering into the slider upon continuation of the feeding movement of the blank.
Inventors
- 👤 Harry Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:56
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/42; A44B19/62; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53291; Y10T29/533; Y10T29/53478
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
232 words
Machine for applying sliders to a slide fastener blank in the form of a pair of continuous tapes carrying pairs of interlocking rows of fastening elements, said pairs of rows being arranged with free intervals therebetween where no fastening elements are provided, said machine comprising means for longitudinally moving a slide fastener blank in a substantially rectilinear path, means for immobilizing said blank in a position where a free interval of said blank is present in an operating zone, a pair of spreading legs movable transversely of the plan of said blank in between the tapes present in said operating zone and then spreadable apart, said spreading legs being placed side by side and having wedge-shaped ends suitable, when lying close together, for penetrating through the slit between said tapes, slider feeding means for moving a slider into position between said tapes when spread apart and for holding said slider in said position, means for thereafter restarting the longitudinal movement of said blank, thereby forcing said tapes into the lateral slits of said slider, and means for temporarily spreading said tapes further apart ahead of said slider, said spreading legs being mounted in a vertical position above the path of movement of said blank through said operating zone, and said slider feeding means comprising a vertically movable slider elevator mounted below the path of movement of said blank through said operating zone.
Claim 2
Dependent Claim
232 words
Machine for applying sliders to a slide fastener blank in the form of a pair of continuous tapes carrying pairs of interlocking rows of fastening elements, said pairs of rows being arranged with free intervals therebetween where no fastening elements are provided, said machine comprising means for longitudinally moving a slide fastener blank in a substantially rectilinear path, means for immobilizing said blank in a position where a free interval of said blank is present in an operating zone, a pair of spreading legs movable transversely of the plan of said blank in between the tapes present in said operating zone and then spreadable apart, said spreading legs being placed side by side and having wedge-shaped ends suitable, when lying close together, for penetrating through the slit between said tapes, slider feeding means for moving a slider into position between said tapes when spread apart and for holding said slider in said position, means for thereafter restarting the longitudinal movement of said blank, thereby forcing said tapes into the lateral slits of said slider, and means for temporarily spreading said tapes further apart ahead of said slider, said spreading legs being mounted in a vertical position above the path of movement of said blank through said operating zone, and said slider feeding means comprising a vertically movable slider elevator mounted below the path of movement of said blank through said operating zone.
Claim 3
Dependent Claim
41 words
Machine as in claim 1, in which said spreading legs are provided on their inner sides with cam faces, key means being provided for introduction between said cam faces to cause spreading of said spreading legs upon upward movement of same.
Claim 4
Dependent Claim
140 words
Machine as in claim 2, in which yieldable operating means are provided for moving said spreading legs downwards to cause their wedge-shaped ends to penetrate through the slit between said tapes, said slider elevator having an upper end face with a recess to receive a slider in a position such that the lateral slits of said slider are located immediately above said end face, said elevator being movable upwards to engage the upper face of a slider present in said recess first with the wedge-shaped ends of said spreading legs to push same upwards and at the same time to cause said legs to be spread apart by engagement of said cam faces with said key means, and then with a stop provided on said key means to cause said slider to be held between said elevator and said stop.
Claim 5
Dependent Claim
40 words
Machine as in claim 3 for use with sliders having a spring lock, comprising a spring lock releasing member engageable with the spring lock of a slider held between said elevator and said stop, thereby to release said spring lock.
Claim 6
Dependent Claim
42 words
Machine as in claim 3, in which said means for temporarily spreading said tapes further apart comprise a spreading finger introduciblE between said tapes at a small distance from the front end of a slider held between said elevator and said stop.
References Cited (Backward Citations)
US2879588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |