US3633318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for grinding elongated rolling-up material, particularly metal wire
Assignee: Individual
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Filing: 1969-04-10
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Granted: 1972-01-11
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Expires: 1989-04-10
Abstract
Abstract This disclosure relates to an apparatus for grinding material having a circular cross section which is wound in reels or rolls, said apparatus comprising a fixed framework, a rotating unit mounted on said framework for rotation about an axis parallel to the direction of advancement of the material to be ground, and a pair of grinding wheels rotatably supported by said rotating unit.
Inventors
- 👤 Virgilio Olivotto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:05
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
204 words
An apparatus for grinding elongated rollIng-up material, particularly metal wire, having a fixed supporting framework, a drum supported by said framework and rotatable around an axis, means for advancing the metal wire to be ground along said axis, two driving shafts arranged inside of said rotatable drum parallel to each other and to said axis and diametrically opposite thereto, a pair of grinding wheels supported each by one of said driving shafts for grinding said metal wire, at least two pairs of rolling members inside said drum carrying said driving shafts eccentrically, means for rotating said rolling members to cause the displacement of said grinding wheels with respect to said metal wire, and driving and transmission means for rotating said driving shafts and said drum independently from one another, wherein, according to the improvement, said means for rotating said rolling members comprise worm gear means in engagement with said rolling members, a differential unit arranged between said rotatable drum and said fixed framework to engage said worm gear means, control means on said fixed framework outwardly thereto for actuating said differential unit, thereby to cause the displacement of said driving shafts and said grinding wheels in the inoperative and operative conditions of the apparatus.
Claim 2
Independent Claim
204 words
An apparatus for grinding elongated rollIng-up material, particularly metal wire, having a fixed supporting framework, a drum supported by said framework and rotatable around an axis, means for advancing the metal wire to be ground along said axis, two driving shafts arranged inside of said rotatable drum parallel to each other and to said axis and diametrically opposite thereto, a pair of grinding wheels supported each by one of said driving shafts for grinding said metal wire, at least two pairs of rolling members inside said drum carrying said driving shafts eccentrically, means for rotating said rolling members to cause the displacement of said grinding wheels with respect to said metal wire, and driving and transmission means for rotating said driving shafts and said drum independently from one another, wherein, according to the improvement, said means for rotating said rolling members comprise worm gear means in engagement with said rolling members, a differential unit arranged between said rotatable drum and said fixed framework to engage said worm gear means, control means on said fixed framework outwardly thereto for actuating said differential unit, thereby to cause the displacement of said driving shafts and said grinding wheels in the inoperative and operative conditions of the apparatus.
Claim 3
Dependent Claim
157 words
An apparatus according to claim 1, wherein said differential unit comprises a first internally and externally toothed crown wheel arranged coaxial to said drum and freely rotatable thereto, a second internally toothed crown wheel arranged coaxial to said first crown wheel and rigid with said fixed framework, an externally toothed crown wheel arranged coaxially and idly to said first and second crown wheels inside thereof, a first and a second planet unit having planet wheels capable of rotating between said externally toothed wheel and said first and second crown wheels, respectively, around said externally toothed wheel, said first planet unit being connected for rotation with said worm gear means and said second planet unit being fast with said drum, and wherein said control means for actuating said differential unit comprise at least a further toothed wheel engaging said externally toothed first crown wheel and means for operating said further toothed wheel from the outside of the apparatus.
Claim 4
Dependent Claim
72 words
An apparatus according to claim 1, wherein said worm gear means comprise a toothed portion on said rolling members, two shafts parallel to each other and extending orthogonal to said driving shafts of said grinding wheels, two pairs of worm screws arranged on said shafts respectively, each pair being located diametrically opposite to said rolling members for engaging said toothed portions thereof, said shafts being connected for rotation to said differential unit.
Claim 5
Dependent Claim
181 words
An apparatus according to claim 1, wherein said driving means are arranged outwardly of said rotatable drum on said fixed framework and said transmission means for transmitting movement to said driving shafts comprise a first pair of pulleys rigid with one another and arranged coaxial to said drum freely rotatable thereto, one of said pulleys being arranged outwardly and the other inwardly of said drum, said pair of pulleys being actuated by said driving means, a pair of shafts carried by said rotatable drum parallel to the axis thereof and diametrically opposite thereto, a second pair of pulleys equal to each other idly supported by said shafts, respectively, first belt transmission means for transmitting driving motion from said first pair of pulleys to said second pair of pulleys, a further pair of pulleys rigidly arranged on said driving shafts, respectively, second belt transmission means transmissively connecting said further pair of pulleys with said second pair of pulleys, tensioning means for allowing transmissive engagement between said first, second and further pair of pulleys even during the relative displacement of the grinding wheels.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |