Patent US3874031A successfully refreshed from Google Patents.
US3874031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of rolls from batting
Assignee: Dr Carl Hahn GmbH
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Filing: 1972-07-10
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Granted: 1975-04-01
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Expires: 1992-07-10
Abstract
Abstract An improvement in an apparatus of the automatic feed, separation and winding of a specific length of a fibrous batting for tampons or the like, comprising a rotatable winding fork which is axially displaceable transversely of the plane of transport of the delivered batting, a device for the separation of pieces of batting of specific length, a plurality of confronting, camcontrolled tool groups, each of which comprises a batting holding means comprising at least one, preferably two, cam-controlled clamping jaws for the pieces of batting, said tool group containing a separating means movable transversely of the transport direction of the batting holding means is in engagement with the batting, the improvement which comprises at least two endless flexible members drivable synchronously, stepwise in a common plane of circulation, one clockwise and the other counterclockwise, the winding mandrel being movable transversely of the plane of circulation into an interstice formed by working sections of the flexible members which working sections of the flexible members are disposed in parallel, spaced relationship and bear partially cooperating, each flexible member having at least one tool group which cooperates with a tool group on the other flexible member so that in faced relationship they divide a pair of tension jaws, a winding cup, a pair of clamping jaws and separating means movable transversely to the batting wherein the length of each tool group corresponds to the length of the piece of batting to be pulled off and wound.
Inventors
- 👤 Stefan Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:06
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2082; A61F13/2085
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
407 words
In an apparatus for the automatic feed, separation and winding of a specific length of a fibrous batting for tampons and the like, comprising a rotatable winding mandrel, means for rotating said mandrel when it contains batting to form a wound roll, means for axially displacing said winding mandrel transversely of the direction of support of a delivered batting in the plane of transport of said batting, means for transporting said batting perpendicular to the transverse movement of said winding mandrel, means for separating pieces of batting of specific length, a plurality of confronting cam-controlled processing groups, each of which processing groups comprises a batting holding means and comprises at least one pair of batting clamping jaws each controlled by a cam for the pieces of said batting, said processing groups containing a cutting means, means for moving said cutting means transversely of the transport plane of the batting when the batting holding means is in engagement with the batting, the improvement which comprises at least two endless flexible members in facing relationship with one another, means for driving said flexible members synchronously stepwise in a common plane of circulation, one clockwise and the other counter clockwise, such as to form at least one working station in the region between said flexible members, said working station having a winding cap laterally disposed in said working station co-axially of said winding mandrel, means for moving said winding mandrel into said winding cup of said working station disposed between said flexible members, means for disposing a portion of one of said flexible members over a portion of the other flexible member to define said working station, said working station having a group of processing parts from each of said flexible members and comprising a pair of tension jaws, means for engaging said batting by said jaws, means for transferring a wound roll from said winding mandrel into said winding cup, means for engaging and holding said batting by said batting clamping jaws, said winding cup disposed between said tension jaws and said batting clamping jaws, said cutting means comprising a cutting lever pivotally mounted at said clamping jaws of one of the two flexible members, means for moving said cutting lever transversely to said batting, the length of each group of processing parts in the direction of circulation with respect to said flexible members corresponding to the length of the piece of batting to be pulled off and wound.
Claim 2
Dependent Claim
407 words
In an apparatus for the automatic feed, separation and winding of a specific length of a fibrous batting for tampons and the like, comprising a rotatable winding mandrel, means for rotating said mandrel when it contains batting to form a wound roll, means for axially displacing said winding mandrel transversely of the direction of support of a delivered batting in the plane of transport of said batting, means for transporting said batting perpendicular to the transverse movement of said winding mandrel, means for separating pieces of batting of specific length, a plurality of confronting cam-controlled processing groups, each of which processing groups comprises a batting holding means and comprises at least one pair of batting clamping jaws each controlled by a cam for the pieces of said batting, said processing groups containing a cutting means, means for moving said cutting means transversely of the transport plane of the batting when the batting holding means is in engagement with the batting, the improvement which comprises at least two endless flexible members in facing relationship with one another, means for driving said flexible members synchronously stepwise in a common plane of circulation, one clockwise and the other counter clockwise, such as to form at least one working station in the region between said flexible members, said working station having a winding cap laterally disposed in said working station co-axially of said winding mandrel, means for moving said winding mandrel into said winding cup of said working station disposed between said flexible members, means for disposing a portion of one of said flexible members over a portion of the other flexible member to define said working station, said working station having a group of processing parts from each of said flexible members and comprising a pair of tension jaws, means for engaging said batting by said jaws, means for transferring a wound roll from said winding mandrel into said winding cup, means for engaging and holding said batting by said batting clamping jaws, said winding cup disposed between said tension jaws and said batting clamping jaws, said cutting means comprising a cutting lever pivotally mounted at said clamping jaws of one of the two flexible members, means for moving said cutting lever transversely to said batting, the length of each group of processing parts in the direction of circulation with respect to said flexible members corresponding to the length of the piece of batting to be pulled off and wound.
Claim 3
Dependent Claim
77 words
An improvement according to claim 1 wherein there are a plurality of winding cups, and at least two batting clamping jaws, each winding cup mounted to a flexible member, said apparatus including a guide in said winding cup over said batting articulated on the opposite endless flexible member and means for extending said guide over the width of said batting during winding by said winding mandrel to retain the desired outside diameter of the roll so formed.
Claim 4
Dependent Claim
62 words
An improvement according to claim 2 wherein said apparatus further comprises a cam, a roller and a curved lever, means for articulating said curved lever to said winding cup, said curved lever pivotally connectEd to said roller, said roller bearing on said cam whereby said lever is caused to be disposed over said winding cup to provide a substantially closed transport chamber.
Claim 5
Dependent Claim
60 words
An improvement according to claim 3 wherein said cam on which said roller bears has a ramp surface and in the region of said ramp surface of said cam there is an ejection means and said apparatus further comprises means for displacing said ejector means transversely of the direction of advancement of the batting to eject a wound roll transversely.
Claim 6
Dependent Claim
13 words
An improvement according to claim 4 wherein said ejection means is a plunger.
Claim 7
Dependent Claim
50 words
An improvement according to claim 4 wherein said tension jaws are disposed on the respective flexible members so as to be offset from the corresponding cooperating tension jaw member on the other flexible member in such a manner that in the engagement position they effect a deflection of the batting.
Claim 8
Dependent Claim
38 words
An improvement according to claim 6 wherein said spring biased guide has edges which laterally overlap batting feed through said apparatus and said tension jaws have engaging surfaces with edges which laterally overlap batting fed through said apparatus.
Claim 9
Dependent Claim
99 words
An improvement according to claim 7 wherein said apparatus further comprises a transmission gear and a pair of stepping wheels located outside one another and offset 180* from one another, said stepping wheels having planes of rotation parallel to one another, said apparatus further comprising a stepping cam disposed between and connected to said stepping wheels, said cam having a plane of rotation perpendicular to the planes of rotation of said stepping wheels and means for driving said cam whereby to actuate said stepping wheels, said winding mandrel connected to one of said stepping wheels through said transmission gear.
Claim 10
Dependent Claim
31 words
An improvement according to claim 8 wherein said stepping cam is in engagement with a roller mounted on each of said stepping wheels through which the stepping wheels are alternatively rotatable.
Claim 11
Dependent Claim
47 words
An improvement according to claim 8 wherein at least one of said flexible members comprises a conveyor chain having drive sockets engaged by one of said stepping wheels through a gear drive, a counter shaft transmission connecting the other of said stepping wheels to said winding mandrel.
Claim 12
Dependent Claim
177 words
An apparatus according to claim 7 wherein said apparatus comprises a stepping cam, a drive shaft and means for driving said drive shaft, said stepping cam is co-rotationally mounted on said drive shaft and disposed parallel to the direction of movement of said batting, said apparatus further comprises a second cam, said second cam mounted co-rotationally on said drive shaft and connected to said winding mandrel, said apparatus comprises a third cam, said third cam is mounted co-rotationally on said drive shaft, said apparatus comprises means for stripping a wound roll from said winding mandrel, said third cam is connected to said means for stripping a wound roll from said winding mandrel, said apparatus comprises a fourth cam, said fourth cam mounted on said drive shaft, said apparatus comprises a crank drive, said fourth cam connected to said crank drive, said ejection means connected to said crank drive whereby rotation of said drive shaft actuates said crank drive which in turn moves said ejection means transversely to the direction of travel of said batting through said apparatus.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |