US3620528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding flexible sheet material to a pair of transport rollers
Assignee: MASCHINENFABRIK TURNER AG OBERURSEL
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Filing: 1969-09-22
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Granted: 1971-11-16
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Expires: 1989-09-22
Abstract
Abstract The present invention relates to an apparatus for feeding flexible sheet material such as animal hides to a pair of transport rollers especially in connection with a leathersplitting machine. The invention provides a guide surface which is located adjacent to one of the transport rollers thus creating a guide channel leading into a feed gap between two transport rollers. The guide surface presses the sheet material first against the transport roller which acts as a drive roller with such a looping angle that the sheet material is positively fed into the feed gap.
Inventors
- 👤 Rudolf Skocir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:14
CPC Classifications
C; C14; C14B; C14B1/00; C14B1/02; C14B1/14; C14B2700/00; C14B2700/10; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0267
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
181 words
An apparatus for feeding hides to a knife for producing socalled split leather, comprising an upper transport roller and a lower transport roller arranged alongside each other with a spacing between the rollers to provide a feed gap, the rotation of said rollers defining a transport direction for said hides, a feed-in table arranged upstream of said feed gap relative to said transport direction, said feed-in table having an edge facing the feed gap and a horizontal top surface located above a horizontal plane through said feed gap, hide guide means positioned between said edge and said feed gap, said hide guide means including a guide surface which has a curved bridging section at its upper end providing a smooth passage between said top surface of the feed-in table and said guide surface proper as well as a lower tip reaching into said feed gap substantially to a line just ahead of the narrowest width of the feed gap whereby a funnel shaped inlet is formed so that the leading edge of a hide is guided directly into the feed gap.
Claim 2
Independent Claim
181 words
An apparatus for feeding hides to a knife for producing socalled split leather, comprising an upper transport roller and a lower transport roller arranged alongside each other with a spacing between the rollers to provide a feed gap, the rotation of said rollers defining a transport direction for said hides, a feed-in table arranged upstream of said feed gap relative to said transport direction, said feed-in table having an edge facing the feed gap and a horizontal top surface located above a horizontal plane through said feed gap, hide guide means positioned between said edge and said feed gap, said hide guide means including a guide surface which has a curved bridging section at its upper end providing a smooth passage between said top surface of the feed-in table and said guide surface proper as well as a lower tip reaching into said feed gap substantially to a line just ahead of the narrowest width of the feed gap whereby a funnel shaped inlet is formed so that the leading edge of a hide is guided directly into the feed gap.
Claim 3
Dependent Claim
42 words
The apparatus according to claim 1, wherein said guide surface proper has a concave curvature which faces said upper transport roller and wherein said curved bridging section has a convex shape also facing said upper transport roller and forming said smooth passage.
Claim 4
Dependent Claim
37 words
The apparatuS according to claim 1, wherein said upper transport roller has a predetermined radius, and wherein said guide surface proper has a curvature having a radius larger than said predetermined radius of the upper transport roller.
Claim 5
Dependent Claim
52 words
The apparatus according to claim 1, wherein said guide surface proper and the bridging section comprise a surface finish such that the coefficient of friction between the hide guide means and the sheet material is several times smaller than the respective friction coefficient between the upper transport roller and the sheet material.
Claim 6
Dependent Claim
22 words
The apparatus according to claim 1, further comprising means for rigidly attaching said guide means to the edge of said feed-in table.
Claim 7
Dependent Claim
41 words
The apparatus according to claim 1, further comprising means for yieldingly attaching said guide means to the edge of said feed-in table, and for locating the guide means so that said curved bridging section provides said smooth passage at all times.
Claim 8
Dependent Claim
51 words
The apparatus according to claim 1, in which said guide means comprises a plurality of guide surface elements, each element including said curved bridging section, and means for yieldingly supporting said guide surface elements between said table edge and said upper transport roller to form a row of guide surface elements.
Claim 9
Dependent Claim
36 words
The apparatus to claim 1, further comprising adjusting means operatively connected between the feed-in table and the guide means for adjusting the spacing between the guide surface of the guide means and the upper transport roller.
Claim 10
Independent Claim
210 words
An apparatus for feeding hides to a knife for producing so called split leather, comprising an upper transport roller and a lower transport roller each roller having a longitudinal axis, said rollers being arranged alongside each other with a spacing between the rollers to provide a feed gap, the rotation of said rollers defining a transport direction for said hides, a feed-in table arranged upstream of said feed gap relative to said transport direction, said feed-in table having a horizontal top surface extending below said feed gap and substantially at a right angle relative to a plane extending through said longitudinal axes of both rollers, said feed-in table having a table edge facing said lower transport roller, hide guide means positioned upstream of said feed gap and above said table edge, said hide guide means including a guide surface which has a convex curved portion upstream of a concave curved portion, said portions facing said horizontal table surface and lower transport roller, said hide guide means further including a tip downstream of said concave portion, said tip reaching into said feed gap substantially to a line just ahead of the narrowest width of the feed gap, whereby the leading edge of a hide is guided directly into the feed gap.
Claim 11
Independent Claim
210 words
An apparatus for feeding hides to a knife for producing so called split leather, comprising an upper transport roller and a lower transport roller each roller having a longitudinal axis, said rollers being arranged alongside each other with a spacing between the rollers to provide a feed gap, the rotation of said rollers defining a transport direction for said hides, a feed-in table arranged upstream of said feed gap relative to said transport direction, said feed-in table having a horizontal top surface extending below said feed gap and substantially at a right angle relative to a plane extending through said longitudinal axes of both rollers, said feed-in table having a table edge facing said lower transport roller, hide guide means positioned upstream of said feed gap and above said table edge, said hide guide means including a guide surface which has a convex curved portion upstream of a concave curved portion, said portions facing said horizontal table surface and lower transport roller, said hide guide means further including a tip downstream of said concave portion, said tip reaching into said feed gap substantially to a line just ahead of the narrowest width of the feed gap, whereby the leading edge of a hide is guided directly into the feed gap.
Claim 12
Dependent Claim
23 words
The apparatus according to claim 9, wherein said table edge has a curvature substantially conforming to the circumference of said lower transport roller.
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |