Patent US3796119A successfully refreshed from Google Patents.
US3796119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staple fiber cutter
Assignee: FMC Corp
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Filing: 1972-11-24
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Granted: 1974-03-12
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Expires: 1992-11-24
Abstract
Abstract A commercially known fiber cutter which can be laced up for operation only when stationary or shut down is modified so that it may be laced while in operation and becomes useful with a tow which is being continuously produced as by a rayon or other continuous fiber spinning machine.
Inventors
- 👤 C Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/02; D01G1/04; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4838; Y10T83/95
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
In apparatus for cutting a tow of filamentary material into staple fibers comprising a reel having a winding surface formed of a multiplicity of cutting elements extending radially outward between flange forming members and wherein means is provided for forcing against the cutting elements the inner layer of a plurality of layers of tow wound on the reel and wherein the reel is detachably secured to the lower end of a vertical drive shaft and the lower flange forming member is a ring permitting fibers cut from the tow wound on the reel and forced inwardly between adjacent cutting elements to fall downward from a central region of the reel into a hopper located therebelow; the improvement comprising means mounting the hopper for movement between a first position directly beneath the reel to a second position where the region above the hopper is unobstructed, and a support member around the top of said hopper adapted to support the reel when the reel is detached from the drive shaft whereby the hopper may be used for transporting the reel between its normal operating position and an easy access position.
Claim 2
Dependent Claim
188 words
In apparatus for cutting a tow of filamentary material into staple fibers comprising a reel having a winding surface formed of a multiplicity of cutting elements extending radially outward between flange forming members and wherein means is provided for forcing against the cutting elements the inner layer of a plurality of layers of tow wound on the reel and wherein the reel is detachably secured to the lower end of a vertical drive shaft and the lower flange forming member is a ring permitting fibers cut from the tow wound on the reel and forced inwardly between adjacent cutting elements to fall downward from a central region of the reel into a hopper located therebelow; the improvement comprising means mounting the hopper for movement between a first position directly beneath the reel to a second position where the region above the hopper is unobstructed, and a support member around the top of said hopper adapted to support the reel when the reel is detached from the drive shaft whereby the hopper may be used for transporting the reel between its normal operating position and an easy access position.
Claim 3
Dependent Claim
23 words
The apparatus set forth in claim 1 wherein the means mounting the hopper comprises a hinge securing said hopper to a stationary support.
Claim 4
Dependent Claim
116 words
The apparatus set forth in claim 1 including a tow catching notch in the outer periphery of the lower flange forming member of the reel for catching a tow held against said periphery as said reel is rotating, movement of said hopper to its said second position permitting an operator to have access to the region beneath the reel whereby the operator may hold the tow in the notch by manually rotating the end thereof about the axis of the reel until the tow wraps sufficiently about the reel to anchor the tow to the reel thus enabling the apparatus to be used for cutting a tow which is continuously being supplied by a spinning machine.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |