Patent US3623719A successfully refreshed from Google Patents.
US3623719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for transferring flat, flexible sheets onto a conveyor
Assignee: Maschinenfabrik Turner AG
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Filing: 1969-10-03
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Granted: 1971-11-30
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Expires: 1989-10-03
Abstract
Abstract The present invention relates to a method and apparatus for transferring flat, flexible sheets, especially leather from a storage position to a conveyor, wherein the sheets are first placed on a movable surface while maintaining such surface in a substantially vertical position and then tilting the surface toward said conveyor. The apparatus for performing such method comprises a movable, tiltable surface supported on a frame and sheet suction means movable back and forth between a sheet storage position and a position above the frame, said surface comprising at least one endless belt or a series of rollers actively driven, said rollers being rotatably supported on shafts rigidly connected to each other and one of the shafts being operatively connected to tilting means which tilt the movable surface constituted by said belt or rollers back and forth through a tilting angle to direct the sheet toward said conveyor.
Inventors
- 👤 Jiri Dokoupil
- 👤 Jiri Zubik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
C; C14; C14B; C14B1/00; C14B1/62
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
104 words
A method for transferring flat, flexible sheets from a storage point onto a conveyor, comprising the steps of lifting at least one of said sheets, depositing the lifted sheet onto a movable surface so that the deposited sheet hangs down on each side of said movable surface so as to cover separate portions of said movable surface while maintaining said separate surface portions in a substantially vertical orientation, and tilting said separate portions so that one of its ends points toward said conveyor and moving said surface whereby the moving of the surface in combination with its tilting transfers the sheet onto said conveyor.
Claim 2
Independent Claim
104 words
A method for transferring flat, flexible sheets from a storage point onto a conveyor, comprising the steps of lifting at least one of said sheets, depositing the lifted sheet onto a movable surface so that the deposited sheet hangs down on each side of said movable surface so as to cover separate portions of said movable surface while maintaining said separate surface portions in a substantially vertical orientation, and tilting said separate portions so that one of its ends points toward said conveyor and moving said surface whereby the moving of the surface in combination with its tilting transfers the sheet onto said conveyor.
Claim 3
Dependent Claim
37 words
The method according to claim 1, comprising depositing said sheet so as to insert a sheet edge between two separate portions of said movable surface, and tilting said surface portions in the same direction toward said conveyor.
Claim 4
Dependent Claim
39 words
The method according to claim 1, wherein said separate portions of the movable surface are tilted in opposite directions so that runs of said surface portions facing each other in said substantially vertical orientation move in the same direction.
Claim 5
Dependent Claim
37 words
The method according to claim 3, comprising moving said runs facing each other in a direction away from said conveyor for advancing the sheet toward the conveyor on a return run of one of said surface portions.
Claim 6
Dependent Claim
33 words
The method according to claim 2, comprising moving said runs facing each other in a direction toward said conveyor for advancing the sheet toward said conveyor between said runs which face each other.
Claim 7
Independent Claim
131 words
An apparatus for transferring flat, flexible sheets from a storage position onto a conveyor, comprising movable sheet-lifting means, guide means supported above said storage position, means operatively connected to said sheet-lifting means for moving said sheet-lifting means along said guide means, tilting means including a frame located adjacent said storage position, said guide means for the sheet-lifting means extending laterally above said tilting means and above the storage position, said tilting means comprising spaced, rotatable means supported by said tilting means and adapted to constitute a movable surface, drive means operatively connected for driving the movable surface, and means operatively connected for swinging said tilting means back and forth through a tilting angle between a substantially vertical sheet-receiving position of said movable surface and a sheet-advancing position of said movable surface.
Claim 8
Independent Claim
131 words
An apparatus for transferring flat, flexible sheets from a storage position onto a conveyor, comprising movable sheet-lifting means, guide means supported above said storage position, means operatively connected to said sheet-lifting means for moving said sheet-lifting means along said guide means, tilting means including a frame located adjacent said storage position, said guide means for the sheet-lifting means extending laterally above said tilting means and above the storage position, said tilting means comprising spaced, rotatable means supported by said tilting means and adapted to constitute a movable surface, drive means operatively connected for driving the movable surface, and means operatively connected for swinging said tilting means back and forth through a tilting angle between a substantially vertical sheet-receiving position of said movable surface and a sheet-advancing position of said movable surface.
Claim 9
Dependent Claim
22 words
The apparatus aCcording to claim 6, wherein said lifting means comprise suction members adapted to contact said sheets along a predetermined area.
Claim 10
Dependent Claim
46 words
The apparatus according to claim 6, wherein said spaced, rotatable means comprise at least an upper roller and a lower roller, each roller having a longitudinal rotational axis, said guide means comprising rails extending above and in parallel to said longitudinal axis of the upper roller.
Claim 11
Dependent Claim
104 words
The apparatus according to claim 8, further comprising a shaft for said upper roller and a shaft for said lower roller, means for rotatably supporting each roller on its respective shaft, means for rotatably supporting said shaft for the upper roller in said frame of the tilting means, means attached to the upper roller shaft for rotating the upper roller shaft through a tilting angle, and means for rigidly connecting the upper roller shaft with the lower roller shaft whereby rotating the upper roller shaft through said tilting angle tilts the lower roller in a predetermined direction, especially in the direction toward said conveyor.
Claim 12
Dependent Claim
20 words
The apparatus according to claim 8, further comprising at least one endless belt supported by said upper and lower roller.
Claim 13
Dependent Claim
39 words
The apparatus according to claim 8, comprising means for rotatably supporting said upper roller on said tilting means, and means for swingably supporting said tilting means in said frame relative to the longitudinal rotational axis of said upper roller.
Claim 14
Dependent Claim
19 words
The apparatus according to claim 8, comprising means operatively connected to said upper roller for rotating the upper roller.
Claim 15
Dependent Claim
96 words
The apparatus according to claim 6, wherein said tilting means comprise two separate tilting members, each member including an upper and a lower rotatable means spaced from each other and supported by said tilting means, said tilting members constituting separate movable surfaces, said means for swinging said tilting means being adapted for swinging one tilting member clockwise and the other tilting member counterclockwise from a substantially vertical position in which said tilting members extend in parallel to each other to a substantially horizontal position wherein the rotatable means of both tilting members constitute said movable surface.
Claim 16
Dependent Claim
44 words
The apparatus according to claim 13, wherein said means for swinging said tilting means comprise gear means for driving said gear means, and means for operatively connecting the gear means to said separate tilting members for tilting the members simultaneously but in opposition directions.
Claim 17
Dependent Claim
45 words
The apparatus according to claim 10, wherein said endless belt is air-permeable, at least said upper roller being in the form of a hollow drum comprising a surface with apertures therein, said apparatus further comprising a valving mechanism for connecting the drum to evacuating means.
Claim 18
Dependent Claim
22 words
The apparatus according to claim 15, wherein said endless belt comprises perforations therein in alignment with said apertures in the drum surface.
Claim 19
Dependent Claim
77 words
The apparatus according to claim 6, wherein said tilting means comprise at least two upper rotatable surface means and two lower rotatable surface means, upper and lower rotational axes for said rotatable means, the rotational axis for one of said upper means being supported in said frame, means for rigidly connecting said rotational axes with each other, said means for swinging said tilting means being adapted for swinging said lower rotatable means simultaneously in the same direction.
Claim 20
Dependent Claim
58 words
The apparatus according to claim 17, wherein said rotatable means comprise two upper rollers and two lower rollers and two belts each supported by an upper and a lower roller, and means operatively connected to said rollers for driving said belts in opposite directions whereby parallel runs of said belts facing each other run in the same direction.
Claim 21
Dependent Claim
29 words
The apparatus according to claim 18, wherein said parallel runs facing each other advance toward said conveyor, whereby said sheet is moved to the conveyor between said paralLel runs.
Claim 22
Dependent Claim
36 words
The apparatus according to claim 18, wherein said parallel runs facing each other advance in the direction away from said conveyor whereby said sheet is advanced toward said conveyor on a return run of said belts.
Claim 23
Dependent Claim
23 words
The apparatus according to claim 18, further comprising means for drivingly coupling two of said rollers which are arranged adjacent to each other.
Claim 24
Dependent Claim
45 words
The apparatus according to claim 18, comprising tilt guide means attached to said frame, said rotational axis of at least one of said rollers having ends movably supported in said tilt guide means to move therealong when said tilting means swing through said tilting angle.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |