US3834085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming a cabochon
Assignee: Individual
•
Filing: 1973-07-02
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Granted: 1974-09-10
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Expires: 1993-07-02
Abstract
Abstract A cabochon is formed by rotating a gemstone workpiece about a rotational axis while contacting it with an abrasive surface, moving the workpiece and the rotational axis in a radial path in response to its rotational movement to change the lateral position of the rotational axis in response to the angular displacement of the workpiece during its rotation, and swinging the rotational axis with respect to the abrasive surface, the swing axis lying normal both to the rotational axis and to the radial movement of the rotational axis.
Inventors
- 👤 J Moeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:15
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/16; B24B9/163
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
Lapidary apparatus for use in shaping a gemstone workpiece into a cabochon, comprising, a shaft for supporting a workpiece, said shaft being rotatable about its longitudinal axis, means for moving the shaft in a radial path in response to its rotation so that the position of its longitudinal axis changes with and is dependent upon its angular displacement during rotation, abrasive means having an abrasive surface for contacting a workpiece supported on the shaft, and means for providing about a swing axis relative swinging movement between the longitudinal axis and the abrasive surface of the abrasive means, said swing axis lying normal both to the longitudinal axis and to the radial path of the shaft.
Claim 2
Dependent Claim
115 words
Lapidary apparatus for use in shaping a gemstone workpiece into a cabochon, comprising, a shaft for supporting a workpiece, said shaft being rotatable about its longitudinal axis, means for moving the shaft in a radial path in response to its rotation so that the position of its longitudinal axis changes with and is dependent upon its angular displacement during rotation, abrasive means having an abrasive surface for contacting a workpiece supported on the shaft, and means for providing about a swing axis relative swinging movement between the longitudinal axis and the abrasive surface of the abrasive means, said swing axis lying normal both to the longitudinal axis and to the radial path of the shaft.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 having means for adjusting the location of the shaft to vary the position of the workpiece with respect to the swing axis.
Claim 4
Dependent Claim
32 words
The apparatus of claim 2 wherein the means for adjusting the location of the shaft includes a pair of carriages slidable in mutually perpendicular directions which lie perpendicular to the swing axis.
Claim 5
Dependent Claim
47 words
The apparatus of claim 1 wherein the means for moving the shaft in a radial path includes a cam connected to and rotatable with the shaft, and cam follower means engaged against the cam to move the cam and the shaft radially upon rotation of the shaft.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1 wherein said swing axis is substantially perpendicular to the radial path and to the longitudinal axis of the shaft.
Claim 7
Dependent Claim
27 words
The apparatus of claim 5 having means for adjusting the location of the shaft to vary the position of the workpiece with respect to the swing axis.
Claim 8
Dependent Claim
32 words
The apparatus of claim 6 wherein the means for adjusting the location of the shaft includes a pair of carriages slidable in mutually perpendicular directions which lie perpendicular to the swing axis.
Claim 9
Dependent Claim
47 words
The apparatus of claim 6 wherein the means for moving the shaft in a radial path includes a cam connected to and rotatable with the shaft, and cam follower means engaged against the cam to move the cam and the shaft radially upon rotation of the shaft.
Claim 10
Dependent Claim
32 words
The apparatus of claim 8 wherein the means for adjusting the location of the shaft includes a pair of carriages slidable in mutually perpendicular directions which lie perpendicular to thE swing axis.
Claim 11
Dependent Claim
100 words
Apparatus for making a cabochon, comprising, an abrasive surface, means for supporting a workpiece for rotational movement about a rotational axis, means for moving the workpiece and the rotational axis in a path lying radial to the rotational axis in response to said rotational movement so that the position of the rotational axis along said path is dependent upon the angular displacement of the workpiece, means providing for relative swinging movement between the abrasive surface and the rotational axis, said relative swinging movement being about a swing axis which is normal both to the rotational axis and to said path.
Claim 12
Dependent Claim
100 words
Apparatus for making a cabochon, comprising, an abrasive surface, means for supporting a workpiece for rotational movement about a rotational axis, means for moving the workpiece and the rotational axis in a path lying radial to the rotational axis in response to said rotational movement so that the position of the rotational axis along said path is dependent upon the angular displacement of the workpiece, means providing for relative swinging movement between the abrasive surface and the rotational axis, said relative swinging movement being about a swing axis which is normal both to the rotational axis and to said path.
Claim 13
Independent Claim
101 words
A method of making a cabochon, comprising the steps of contacting a workpiece with an abrasive surface while simultaneously doing the following: rotating the workpiece about a rotational axis, moving the rotational axis in a path lying radial to the rotational axis, said movement being in response to rotation of the workpiece so that the lateral position of the rotational axis along said path is dependent upon the angular displacement of the workpiece, relatively swinging the abrasive surface and the rotational axis, said swinging occurring about a swing axis which is normal both to the rotational axis and to said path.
Claim 14
Independent Claim
101 words
A method of making a cabochon, comprising the steps of contacting a workpiece with an abrasive surface while simultaneously doing the following: rotating the workpiece about a rotational axis, moving the rotational axis in a path lying radial to the rotational axis, said movement being in response to rotation of the workpiece so that the lateral position of the rotational axis along said path is dependent upon the angular displacement of the workpiece, relatively swinging the abrasive surface and the rotational axis, said swinging occurring about a swing axis which is normal both to the rotational axis and to said path.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |