Patent US3793818A successfully refreshed from Google Patents.
US3793818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doffing and donning apparatus usable for textile machines such as draw-twisters
Assignee: Ishikawa Seisakusho Ltd
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Filing: 1972-03-10
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Granted: 1974-02-26
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Expires: 1992-03-10
Abstract
Abstract Apparatus for doffing full cops mounted on spindles of a textile machine such as draw-twisters for synthetic fibers onto an intermittently circulatable conveyer mechanism of the zigzag pegs arrangement type and for donning of bare bobbins mounted on the conveyer mechanism onto the spindles by carrying them by pneumatically actuated resilient gripper assemblies which are moved along the prescribed routes by combination of vertical pantagraph motion of a lifting mechanism with horizontal pantagraph motion of a horizontal displacer mechanism.
Inventors
- 👤 Y Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:19
CPC Classifications
D; D01; D01H; D01H9/00; D01H9/02; D01H9/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
211 words
Doffing and donning apparatus Usable for textile machines having a row of spindles comprising, in combination, a conveyor mechanism including an endless belt mounted to circulate in front of said row of spindles and in parallel with said row of spindles, a plurality of pegs disposed on said belt in two parallel rows in such a manner that a peg in one peg row is spaced longitudinally along said belt from the nearest peg in the other peg row at a distance equal to half the spindle pitch of said row of spindles; a drive mechanism coupled to said conveyor mechanism to intermittently drive said belt; a pantograph lifting mechanism mounted in front of said row of spindles; a first pneumatic driving mechanism coupled to said lifting mechanism for providing same with a vertical pantograph motion; a horizontal pantograph displacer mechanism mounted on the upper end of said lifting mechanism; a second pneumatic driving mechanism coupled to said horizontal displacer mechanism for providing same with a horizontal pantograph motion; gripper assemblies, one for each spindle unit, mounted on said horizontal displacer mechanism, a a third pneumatic driving mechanism connected to said gripper assemblies for actuation thereof; and a pilot mechanism for actuating and piloting operations of said mechanisms in determined sequence.
Claim 2
Dependent Claim
211 words
Doffing and donning apparatus Usable for textile machines having a row of spindles comprising, in combination, a conveyor mechanism including an endless belt mounted to circulate in front of said row of spindles and in parallel with said row of spindles, a plurality of pegs disposed on said belt in two parallel rows in such a manner that a peg in one peg row is spaced longitudinally along said belt from the nearest peg in the other peg row at a distance equal to half the spindle pitch of said row of spindles; a drive mechanism coupled to said conveyor mechanism to intermittently drive said belt; a pantograph lifting mechanism mounted in front of said row of spindles; a first pneumatic driving mechanism coupled to said lifting mechanism for providing same with a vertical pantograph motion; a horizontal pantograph displacer mechanism mounted on the upper end of said lifting mechanism; a second pneumatic driving mechanism coupled to said horizontal displacer mechanism for providing same with a horizontal pantograph motion; gripper assemblies, one for each spindle unit, mounted on said horizontal displacer mechanism, a a third pneumatic driving mechanism connected to said gripper assemblies for actuation thereof; and a pilot mechanism for actuating and piloting operations of said mechanisms in determined sequence.
Claim 3
Dependent Claim
102 words
A doffing and donning mechanism as claimed in claim 1, wherein each of said gripper assemblies includes a circular upper casing, an under casing coupled to said upper casing to define a room; a pair of bow-shaped gripper segments pivoted inside said upper casing, each gripper segment having gripper shoes fixed on its internal surface, an interposed spring positioned to resiliently repel said segments from each other; an inflatable flexible tube inserted between the internal wall of said upper casing and said gripper segments; and means connected to said inflatable flexible tube for supplying pressured air thereto from a pneumatic supply source.
Claim 4
Dependent Claim
37 words
Doffing and donning apparatus as claimed in claim 2, further comprising a pressor axially and slidably disposed inside of said upper casing, and means coupled to said pressor for resiliently urging said pressor towards said under casing.
Claim 5
Dependent Claim
27 words
Doffing and donning apparatus as claimed in claim 2, wherein said upper casing is provided with at least one yarn separator tongue protruding radially from its periphery.
Claim 6
Dependent Claim
164 words
A doffing and donning apparatus for use with a textile machine having a row of spindles, said apparatus comprising horizontal guide rollers, a belt mounted on said guide rollers, a plurality of pegs mounted on said belt in two longitudinal rows, the pegs of each row being spaced a distance of one-half the pitch of said spindles from the pegs of the other row in the longitudinal direction of said belt, a vertical pantograph lifting assembly mounted adjacent said belt, a horizontal pantograph displacing assembly mounted on the top of said vertical lifting assembly, a plurality of grippers on said horizontal displacing assembly, and spaced apart the same distance as said spindles, means for intermittently driving said belt, drive means coupled to said grippers, first control means coupled to said lifting assembly for lifting and lowering said displacing assembly, and a second control means coupled to said displacing assembly for selectively aligning said grippers with said row of spindles and said rows of pegs.
Claim 7
Dependent Claim
164 words
A doffing and donning apparatus for use with a textile machine having a row of spindles, said apparatus comprising horizontal guide rollers, a belt mounted on said guide rollers, a plurality of pegs mounted on said belt in two longitudinal rows, the pegs of each row being spaced a distance of one-half the pitch of said spindles from the pegs of the other row in the longitudinal direction of said belt, a vertical pantograph lifting assembly mounted adjacent said belt, a horizontal pantograph displacing assembly mounted on the top of said vertical lifting assembly, a plurality of grippers on said horizontal displacing assembly, and spaced apart the same distance as said spindles, means for intermittently driving said belt, drive means coupled to said grippers, first control means coupled to said lifting assembly for lifting and lowering said displacing assembly, and a second control means coupled to said displacing assembly for selectively aligning said grippers with said row of spindles and said rows of pegs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |