Patent US3628291A successfully refreshed from Google Patents.
US3628291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic band polishing machine
Assignee: Individual
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Filing: 1970-08-11
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Granted: 1971-12-21
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Expires: 1990-08-11
Abstract
Abstract A machine for polishing inside walls of a ring-shaped workpiece, such as handles of scissors and the like, in which the workpiece is automatically selected, set up in position and burnished by an endless belt, after which the workpiece is dropped and another workpiece selected. The machine includes a pair of spaced supports for the endless belt with the workpiece therebetween and performs the polishing operation automatically by pushing a loop of the belt through the workpiece opening, expanding the passedthrough loop, placing this expanded loop upon a pulley, and then rotating the belt, the spaced supports also being simultaneously rotated around its longitudinal axis and the workpiece position altered so as to enable all interior surfaces of the ring to be polished.
Inventors
- 👤 Ottorino Visconti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:41
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/02; B24B19/00; B24B21/006
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
152 words
A machine for the automatic polishing of the inside surfaces of ring shaped workpieces, said machine comprising two spaced supporting means, an endless polishing band carried by said supporting means, said band being adapted to run thereon and between which the workpiece is intended to be placed, band tensioning means associated with one of said supporting means to support the endless band in an idle position free of the other supporting means whereby the ring shaped workpiece can be positioned in the free space between the endless band and said other supporting means, means for extending the endless band from its idle position through the ring shaped workpiece so positioned towards said other supporting means, further means for receiving the extended portion of said endless band and placing it around the said other supporting means, and means for driving the endless band extending between the two supporting means to polish the workpiece.
Claim 2
Dependent Claim
152 words
A machine for the automatic polishing of the inside surfaces of ring shaped workpieces, said machine comprising two spaced supporting means, an endless polishing band carried by said supporting means, said band being adapted to run thereon and between which the workpiece is intended to be placed, band tensioning means associated with one of said supporting means to support the endless band in an idle position free of the other supporting means whereby the ring shaped workpiece can be positioned in the free space between the endless band and said other supporting means, means for extending the endless band from its idle position through the ring shaped workpiece so positioned towards said other supporting means, further means for receiving the extended portion of said endless band and placing it around the said other supporting means, and means for driving the endless band extending between the two supporting means to polish the workpiece.
Claim 3
Dependent Claim
38 words
A machine as claimed in claim 1, further comprising a support for receiving the workpiece and means for imparting relative rotation to said support and the supporting means for the band, about a longitudinal axis of the machine.
Claim 4
Dependent Claim
96 words
A machine as claimed in claim 2, in which the said band supporting means respectively comprise pulleys at least one of which is arranged to be driven by said driving means, the said band extending means comprising a pusher member mounted for rectilinear movement within the periphery of the band in order to engage and extend the band against the resistance of the tensioning means, and the said band receiving means comprising a plurality of fingers for insertion within the extended portion of the band to open out the latter for arrangement over the corresponding pulley.
Claim 5
Dependent Claim
106 words
A machine as claimed in claim 3, in which a driven one of said pulleys together with the driving means therefor, the band tensioning means and the pusher member are mounted upon a common rotary member on one side of the workpiece support, and the other pulley, being an idler pulley, and the band receiving means are mounted upon a further rotary member coaxial with the first and arranged on the other side of the workpiece support, means being provided for rotating said tow rotary members in synchronism in order to rotate the endless band relatively to the workpiece about said longitudinal axis of the machine.
Claim 6
Dependent Claim
127 words
A machine as claimed in claim 4, in which the said plurality of fingers and the pulley associated therewith are each mounted for movement along an axis perpendicular to the medial plane of the endless band, and are so arranged for movement in timed relation that with the band extended by said pusher member, first the fingers are moved along the corresponding axis and inserted within the band, the fingers are then spread apart to open out the band, the pulley is moved along its corresponding axis and inserted within the opened out portion of the band, the fingers are then contracted together to allow the band to conform to the pulley and finally the fingers are withdrawn from the band by movement along the corresponding axis.
Claim 7
Dependent Claim
44 words
A machine as claimed in claim 5, in which the pulley associated with said fingers is also mounted for movement along a further axis at right angles to the first in order to vary the cutting angle of the band relatively to a workpiece.
Claim 8
Dependent Claim
57 words
A machine as claimed in claim 6, in which the said band tensioning means comprises a pair of arms each pivoted at one end upon a common support together with the associated band supporting means, and each having an idler pulley for engagement with the band and being spring loaded in a direction for tensioning the band.
Claim 9
Dependent Claim
55 words
A machine as claimed in claim 7, in which the said driving means comprises a motor with a band driving pulley fixed to the motor shaft, the motor being slidably mounted for movement at right angles to the motor axis and being spring loaded for sliding movement in a direction to tension the polishing band.
Claim 10
Dependent Claim
66 words
A machine as claimed in claim 8, including a magazine device for feeding workpieces consecutively to the working position, said device being arranged to operate in timed relation to the said band extending means so that workpieces are advanced to and from the working position when the band is retracted, and the band extending and polishing operations are effected between advancing steps of the feed device.
Claim 11
Dependent Claim
61 words
A machine as claimed in claim 9, in which the said magazine feeding device comprises a magazine for workpieces arranged laterally adjacent the path of the polishing band, and said workpiece support includes a gripping device for workpieces arranged for to and fro movement transversely to the path of the band to transfer workpieces from the magazine to the working position.
Claim 12
Dependent Claim
28 words
A machine as claimed in claim 10, in which the said gripping device is further arranged for movement to vary the working position of the workpiece during polishing.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |