US3840928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool holder for lathes
Assignee: LECHLER APPARATEBAU KG
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Filing: 1973-06-01
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Granted: 1974-10-15
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Expires: 1993-06-01
Abstract
Abstract A support for a thread cutting tool on a lathe having an axle for removably receiving the tool support in a fixed member of the lathe opposite to the chuck of the lathe, a connecting member carrying the tapping tools and rotably mounted with respect to the axle, and a gripping sleeve rotably mounted with respect to the connecting member, the axle, the connecting member and the gripping sleeve being in mechanical coupling.
Inventors
- 👤 G Beck
- 👤 R Beck
- 👤 A Muller
- 👤 H Muller
- 👤 E Gluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:22
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/107; B23B31/1071; B23G; B23G5/00; B23G5/08; B23G5/10; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2572; Y10T82/2585
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
173 words
An apparatus for supporting a thread cutting tool on a lathe and for connecting to a tail stock of said lathe opposite chuck means of said lathe adapted to receive a work piece and to rotate it about an axis of rotation, comprising, in combination: connecting means removably coupling said apparatus to said tail stock including elongated exle means; holding means adapted for holding said cutting tool opposite the position of said work piece supported by and disposed rotatably concentrically with said axle means, and operable to be displaced longitudinally to said axle means; gripping means rotatable about said axle means and operable to be displaced longitudinally with respect to said axle means; and planetary gear means putting in driving connection said axle means, said holding means, and said gripping means whereby rotational forces applied to said holding means are transmitted to said gripping means at a reduced level and the absence of a restraining force on said gripping means permits said holding means to rotate in response to rotational forces applied thereto.
Claim 2
Independent Claim
173 words
An apparatus for supporting a thread cutting tool on a lathe and for connecting to a tail stock of said lathe opposite chuck means of said lathe adapted to receive a work piece and to rotate it about an axis of rotation, comprising, in combination: connecting means removably coupling said apparatus to said tail stock including elongated exle means; holding means adapted for holding said cutting tool opposite the position of said work piece supported by and disposed rotatably concentrically with said axle means, and operable to be displaced longitudinally to said axle means; gripping means rotatable about said axle means and operable to be displaced longitudinally with respect to said axle means; and planetary gear means putting in driving connection said axle means, said holding means, and said gripping means whereby rotational forces applied to said holding means are transmitted to said gripping means at a reduced level and the absence of a restraining force on said gripping means permits said holding means to rotate in response to rotational forces applied thereto.
Claim 3
Dependent Claim
83 words
The apparatus as claimed in claim 1, wherein said holding means comprises cutting tool supporting means and rotational translating means are provided for translating the rotational forces between said holding means and said cutting tool supporting means, said rotational translating means comprising sphere means disposed in radial recesses defined in said holding means and adapted to engage mating indentations provided in said cutting tool support whereby said sphere means can translate the rotation of said cutting tool supporting means to said holding means.
Claim 4
Dependent Claim
98 words
The apparatus as claimed in claim 1, wherein said planetary gear means comprises a pair of gear means having different diameters, a common shaft means for mounting said gear means, a journaling means for journaling said gear means, said axle means comprising an outer teething, said gripping means comprising an inner toothing and said holding means comprising an outer toothing, said gear means having the larger diameter engaging the outer teething of said axle means and said inner teething of said gripping means, said gear means having the smaller diameter engaging said outer teething of said holding means.
Claim 5
Dependent Claim
39 words
The apparatus as claimed in claim 3, wherein said teething on said axle means extends in a region axially on said axle means, said region defining the axial regIon of sliding of said holding means and said gripping means.
Claim 6
Dependent Claim
25 words
The apparatus as claimed in claim 1, wherein said axle means comprises a conical end portion for securing said axle means in said tail stock.
Claim 7
Dependent Claim
32 words
The apparatus as claimed in claim 1, wherein the outer surface of said gripping means comprises an outer layer made from a material adapted for improved manual gripping of said gripping means.
Claim 8
Dependent Claim
19 words
The apparatus as claimed in claim 6, wherein the outer surface of said gripping means has a knurling thereon.
Claim 9
Dependent Claim
45 words
The apparatus as claimed in claim 2, wherein a spring means is provided abutting against a boss means provided on said connecting means for forcing said sphere means into said indentations and thereby establishing coupling between said holding means and said cutting tool support means.
Claim 10
Dependent Claim
38 words
The apparatus as claimed in claim 8, wherein said gripping means is slideably arranged in a ring slot formed between said holding means and said gripping means, said spring means resiliently enabling said gripping means to slide axially.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |