US3895572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for pre-condensing and pressing fiber material into a bale
Assignee: Maschinenfabrik Rieter AG
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Filing: 1973-11-21
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Granted: 1975-07-22
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Expires: 1993-11-21
Abstract
Abstract A vertical fiber material collecting chute is arranged over a bale press to feed successive pre-condensed charges of fiber material into the press for pressing into a bale. An air pressure differential is maintained on each charge during formation in the chute by the transporting air stream in order to pre-condense. Upon depositing a charge into the press, the air stream is diverted towards the press in order to push the charge into the press as an aid to gravity.
Inventors
- 👤 Heinz Nitschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:56
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3096; B30B9/3003; B30B9/3007; B30B9/301
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
195 words
Apparatus for pre-condensing by means of air pressure and pressing fiber material into a bale comprising a fiber collecting chute having an inner air permeable envelope defining a first chamber to receive a fiber laden air transporting stream, an outer envelope enclosing said inner envelope to define a second chamber and an air exit opening in said outer envelope for exhausting air passed from said first chamber into said second chamber through said inner envelope; a bale press disposed vertically below said first chamber to receive fiber material therefrom; a movable slide plate disposed between said collecting chute and said bale press for selectively sealing said bale press from said first chamber; a first means for detecting a level of fiber in said first chamber of said collecting chute; a second means for increasing the air pressure in said first chamber of said collecting chute; and a control means for activating said slide plate to unseal said bale press from said first chamber and said second means to increase the air pressure in said first chamber above the received fiber material in response to the fiber material reaching a predetermined level in said first chamber.
Claim 2
Dependent Claim
195 words
Apparatus for pre-condensing by means of air pressure and pressing fiber material into a bale comprising a fiber collecting chute having an inner air permeable envelope defining a first chamber to receive a fiber laden air transporting stream, an outer envelope enclosing said inner envelope to define a second chamber and an air exit opening in said outer envelope for exhausting air passed from said first chamber into said second chamber through said inner envelope; a bale press disposed vertically below said first chamber to receive fiber material therefrom; a movable slide plate disposed between said collecting chute and said bale press for selectively sealing said bale press from said first chamber; a first means for detecting a level of fiber in said first chamber of said collecting chute; a second means for increasing the air pressure in said first chamber of said collecting chute; and a control means for activating said slide plate to unseal said bale press from said first chamber and said second means to increase the air pressure in said first chamber above the received fiber material in response to the fiber material reaching a predetermined level in said first chamber.
Claim 3
Dependent Claim
41 words
Apparatus as set forth in claim 1 further comprising a third means for detecting an air pressure differential between said second chamber and said first chamber and for transmitting a signal in response to the diffeRential exceeding a predetermined pressure differential.
Claim 4
Dependent Claim
48 words
Apparatus as set forth in claim 2 which further comprises means for feeding fiber material to said first chamber, said latter means being connected to said control means and said third means is connected to said control means to deactivate said latter means in response to said signal.
Claim 5
Dependent Claim
18 words
Apparatus as set forth in claim 2 wherein said third means is a presetable pressure differential gauge swtich.
Claim 6
Dependent Claim
19 words
Apparatus as set forth in claim 1 wherein said innner envelope is a filter hose having fixedly mounted ends.
Claim 7
Dependent Claim
27 words
Apparatus as set forth in claim 5 wherein said filter hose extends loosely between said ends for movement under a flow of air passing through said hose.
Claim 8
Dependent Claim
56 words
Apparatus as set forth in claim 1 further comprising a bale tieing room adjacent said bale press for taking up a bale upon completion of bale press action, said bale tieing room including movable and lockable arms for holding a compressed bale therebetween, said arms including means for holding a bale in said bale tieing room.
Claim 9
Dependent Claim
31 words
Apparatus as set forth in claim 7 wherein said means, for holding include cylinders each having a piston movable into said bale tieing room and solenoid valves for activating said cylinders.
Claim 10
Dependent Claim
20 words
Apparatus as set forth in claim 8 wherein said solenoid valves are connected to said control means for activation thereby.
Claim 11
Independent Claim
87 words
A method for pre-condensing and pressing fiber material into a fiber bale comprising the steps of forming a charge of fiber material in a vertical collecting chute, pre-condensing the charge in the chute to a presetable degree under an air pressure differential, and depositing the pre-condensed charge into a bale press below the chute while subjecting the charge to an increased pressure differential between the chute and press, said step of depositing being carried out in response to a predetermined height of the charge in the chute.
Claim 12
Independent Claim
87 words
A method for pre-condensing and pressing fiber material into a fiber bale comprising the steps of forming a charge of fiber material in a vertical collecting chute, pre-condensing the charge in the chute to a presetable degree under an air pressure differential, and depositing the pre-condensed charge into a bale press below the chute while subjecting the charge to an increased pressure differential between the chute and press, said step of depositing being carried out in response to a predetermined height of the charge in the chute.
Claim 13
Dependent Claim
51 words
A method as set forth in claim 10 which further includes the step of passing a fiber material laden air stream into the chute to deposit fiber material therein to form the charge while passing the air stream out of the chute to create said air pressure differential in the chute.
Claim 14
Dependent Claim
40 words
A method as set forth in claim 11 which further includes the step of passing the air stream from the chute into the bale press upon depositing of the charge into the bale press to create said increased pressure differential.
Claim 15
Dependent Claim
158 words
Apparatus for pneumatically pre-condensing and pressing fiber material into a bale comprising a fiber collecting chute having an air permeable envelope defining a chamber to receive a flow of fiber laden transporting air for formation and pre-condensing if a charge of fiber material in said chamber under a first air pressure differential, a bale press below said chamber to receive the charge of fiber material from said chamber, first means for selectively sealing said chamber from said bale press to prevent the charge of fiber material from passing into said bale press during pre-condensing, means for activating said first means to open said chamber to said bale press to discharge the pre-condensed charge into said bale press for formation of a fiber bale therein; and means for increasing said air pressure differential between said chute and said bale press with activation of said first means to accelerate to the discharge of the precondensed charge into said bale press.
Claim 16
Dependent Claim
158 words
Apparatus for pneumatically pre-condensing and pressing fiber material into a bale comprising a fiber collecting chute having an air permeable envelope defining a chamber to receive a flow of fiber laden transporting air for formation and pre-condensing if a charge of fiber material in said chamber under a first air pressure differential, a bale press below said chamber to receive the charge of fiber material from said chamber, first means for selectively sealing said chamber from said bale press to prevent the charge of fiber material from passing into said bale press during pre-condensing, means for activating said first means to open said chamber to said bale press to discharge the pre-condensed charge into said bale press for formation of a fiber bale therein; and means for increasing said air pressure differential between said chute and said bale press with activation of said first means to accelerate to the discharge of the precondensed charge into said bale press.
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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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |