Patent US3750714A successfully refreshed from Google Patents.
US3750714A
Expired / Lapsed
US
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Weaving machine and method
Assignee: McDonnell Douglas Corp
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Filing: 1971-09-27
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Granted: 1973-08-07
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Expires: 1991-09-27
Abstract
Abstract A weaving machine for weaving a wrap thread into a multiplicity of longitudinal threads to create a tubular weave of substantial thickness includes means for supporting a mandrel about which the weave is formed and for further anchoring the longitudinal threads so that they extend downwardly along the mandrel in a shed-like configuration. Located below and centered with respect to the mandrel is a transporting mechanism including a plurality of radial slideways, each of which supports a series of individual sliders which confine the longitudinal threads and are capable of shifting independently of one another to change the radial positions of the various longitudinal threads. The transporting mechanism positions the threads in groups corresponding to the various slideways with the threads in each group being spaced radially from one another due to the radial disposition of the slideways. By manipulating the sliders, any two of the threads of a group can be spaced further apart than the remaining threads to provide a shed opening in the group. An endless track encircles the shed formed by the longitudinal threads, and this track has radial slots for receiving the various groups of longitudinal threads. A feed assembly rides around the track, and this assembly is sized to fit through the shed openings in the various groups of longitudinal threads. The feed assembly carries a bobbin of wrap thread and lays this wrap thread into the portion of the shed opening adjacent to the mandrel as the feed assembly moves along the track, thus forming the tubular weave.
Inventors
- 👤 W Weaver
- 👤 H Holman
- 👤 A Kallmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
D; D03; D03D; D03D37/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
285 words
A weaving machine for weaving a wrap thread into a plurality of longitudinal threads to form a weave of generally tubular configuration; said weaving machine comprising: anchoring means for securing the ends of the longitudinal threads in a generally fixed position; a circular track below the anchoring means, the track being concentric about a center axis and having slots which extend radially with respect to and open inwardly toward the center axis; positioning means for engaging the longitudinal threads and positioning them in circumferentially spaced groups aligned with the slots in the track and with the threads of each group being aligned radially with respect to the center axis and with respect to one another; a mandrel above the track and surrounded by the circumferentially spaced groups of longitudinal threads; shifting means associated with each group of longitudinal threads for moving the longitudinal threads in the radial direction between in-shed and out-shed positions to space two adjacent longitudinal threads of the group further apart than other adjacent longitudinal threads of the group whereby a shed opening is formed in the group, the longitudinal threads when in the in-shed position being located inwardly from the track and when in the out-shed position being located within the radial slots of the track; a carriage mounted on and movable around the track, the carriage having a bobbin containing the wrap thread and an insertion device extending generally in the direction of the center axis and terminating adjacent to the mandrel for directing the wrap thread into the top of the shed opening so that the wrap thread is laid into the shed opening as the carriage moves around the track, whereby the weave is formed about the mandrel.
Claim 2
Dependent Claim
285 words
A weaving machine for weaving a wrap thread into a plurality of longitudinal threads to form a weave of generally tubular configuration; said weaving machine comprising: anchoring means for securing the ends of the longitudinal threads in a generally fixed position; a circular track below the anchoring means, the track being concentric about a center axis and having slots which extend radially with respect to and open inwardly toward the center axis; positioning means for engaging the longitudinal threads and positioning them in circumferentially spaced groups aligned with the slots in the track and with the threads of each group being aligned radially with respect to the center axis and with respect to one another; a mandrel above the track and surrounded by the circumferentially spaced groups of longitudinal threads; shifting means associated with each group of longitudinal threads for moving the longitudinal threads in the radial direction between in-shed and out-shed positions to space two adjacent longitudinal threads of the group further apart than other adjacent longitudinal threads of the group whereby a shed opening is formed in the group, the longitudinal threads when in the in-shed position being located inwardly from the track and when in the out-shed position being located within the radial slots of the track; a carriage mounted on and movable around the track, the carriage having a bobbin containing the wrap thread and an insertion device extending generally in the direction of the center axis and terminating adjacent to the mandrel for directing the wrap thread into the top of the shed opening so that the wrap thread is laid into the shed opening as the carriage moves around the track, whereby the weave is formed about the mandrel.
Claim 3
Dependent Claim
68 words
A weaving machine according to claim 1 wherein the insertion device on the carriage comprises an insertion tube through which the wrap thread is discharged into the portion of the shed openings located adjacent to the completed weave, and mounting means supporting the insertion tube on the carriage, the mounting means urging the tube toward the completed weave but being yieldable to compensate for growth of the weave.
Claim 4
Dependent Claim
47 words
A weaving machine according to claim 2 wherein the mounting means includes a pair of tubes which telescope relative to eaCh other and are urged away from each other by a spring to urge the insertion tube toward the completed weave, whereby a tight weave is formed.
Claim 5
Dependent Claim
27 words
A weaving machine according to claim 1 wherein the portion of the insertion tube from which the wrap thread is laid into the shed opening is flexible.
Claim 6
Dependent Claim
26 words
A weaving machine according to claim 1 and further characterized by means for maintaining the longitudinal threads taut as the wrap thread is woven into them.
Claim 7
Dependent Claim
26 words
A weaving machine according to claim 1 and further characterized by means for drawing the completed weave upwardly away from the track as the weave grows.
Claim 8
Independent Claim
140 words
A method of weaving comprising: arranging longitudinal threads in circumferentially spaced groups about a center axis with the threads of each group being aligned radially with respect to one another and to the center axis, spacing two adjacent threads in at least some of the groups further apart than the remaining adjacent threads in those groups to create shed openings in the groups, the shed openings terminating at apexes located adjacent to the completed portion of the weave; passing a bobbin containing a wrap thread around the center axis and through the shed openings in the groups, playing the wrap thread out of the bobbin and laying into the apexes of the shed openings as the bobbin moves around the center axis; and changing the position of the shed openings with succeeding revolutions of the bobbin about the center axis.
Claim 9
Independent Claim
140 words
A method of weaving comprising: arranging longitudinal threads in circumferentially spaced groups about a center axis with the threads of each group being aligned radially with respect to one another and to the center axis, spacing two adjacent threads in at least some of the groups further apart than the remaining adjacent threads in those groups to create shed openings in the groups, the shed openings terminating at apexes located adjacent to the completed portion of the weave; passing a bobbin containing a wrap thread around the center axis and through the shed openings in the groups, playing the wrap thread out of the bobbin and laying into the apexes of the shed openings as the bobbin moves around the center axis; and changing the position of the shed openings with succeeding revolutions of the bobbin about the center axis.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |