Patent US3590672A successfully refreshed from Google Patents.
US3590672A
Expired / Lapsed
US
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Radius-turning attachment for lathes
Assignee: Hardinge Inc
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Filing: 1968-09-11
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Granted: 1971-07-06
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Expires: 1988-09-11
Abstract
Abstract This disclosure is of an attachment for lathes by means of which highly accurate work can be done so that the attachment may be used, for example, by forming contact lenses and in which two slides are provided, a cross-slide for setting the cutting tool on the center of the lathe spindle, and another slide on which a swivel tool-carrying member, which arrangement allows the tool to be fed in without changing radius for which the tool-carrying member is set. This disclosure also provides readily adjustable means for setting the radius of the cut.
Inventors
- 👤 James Cordier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:20
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/36; B23B5/40; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/148
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
128 words
A radius-turning lathe including: a. a rotary spindle, b. A bed extending parallel to the axis of said spindle, c. a lower cross-slide adjustable relatively to said bed for setting said tool on the center of said spindle, d. an upper slide mounted on said cross-slide and movable toward and from the work, e. a bearing shaft fixedly mounted on said upper slide, f. upper and lower bearing assemblies mounted on said bearing shaft and spaced from each other, g. a swivel member mounted on said upper and lower bearing assemblies, h. a cutting tool mounted on said swivel i. said swivel member and said upper slide having cooperating recesses for receiving said lower bearing assembly, j. said upper and lower bearing assemblies being preloaded against each other.
Claim 2
Dependent Claim
128 words
A radius-turning lathe including: a. a rotary spindle, b. A bed extending parallel to the axis of said spindle, c. a lower cross-slide adjustable relatively to said bed for setting said tool on the center of said spindle, d. an upper slide mounted on said cross-slide and movable toward and from the work, e. a bearing shaft fixedly mounted on said upper slide, f. upper and lower bearing assemblies mounted on said bearing shaft and spaced from each other, g. a swivel member mounted on said upper and lower bearing assemblies, h. a cutting tool mounted on said swivel i. said swivel member and said upper slide having cooperating recesses for receiving said lower bearing assembly, j. said upper and lower bearing assemblies being preloaded against each other.
Claim 3
Dependent Claim
54 words
A radius-turning lathe as in claim 1 and including: a. an adjustable mounting on said swivel member slide for positioning said tool to swing on a radius relatively to said spindle whereby said upper slide may be moved toward and from the work without changing the adjustment of the radius set by said mounting.
Claim 4
Dependent Claim
53 words
A radius-turning lathe as in claim 1 and including: a. a strip of rigid material secured on said lower cross-slide, and b. clamping means mounted in fixed relation to the bed of the lathe and movable into position to grip said strip for securing said lower cross-slide in fixed relation to said bed.
Claim 5
Dependent Claim
47 words
A radius-turning lathe as in claim 1 and including: a. means for moving said swivel member and said upper slide independently of each other, and b. a gage mounted on said adjustable mounting and contacting said swivel member to record the extend of movement of said tool.
Claim 6
Dependent Claim
38 words
A radius-turning lathe as in claim 1 and including: a. a gage mounted on said lower cross-slide and having a part movable into contact with said upper slide to indicate the extent of movement of said upper slide.
Claim 7
Dependent Claim
31 words
A radius-turning lathe as in claim 1 and including: a. a stop on said slide for engaging said swivel member to limit return movement of the same to a starting position.
Claim 8
Dependent Claim
33 words
A radius-turning lathe as in claim 6 and including: a. a pivot on which said stop member is mounted for movement into and out of position to limit movement of said swivel member.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |