Patent US3794436A successfully refreshed from Google Patents.
US3794436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool having plural interchangeable transmissions
Assignee: JACOBSON TOOL & MANUFACTURING CORP A CORP OF IL
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Filing: 1971-10-27
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Granted: 1974-02-26
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Expires: 1991-10-27
Abstract
Abstract A spindle-driving machine tool is provided which has a number of interchangeable gear boxes. The gear boxes are simultaneously operated by being coupled to a number of transmission output shafts. Each of the gear boxes has a number of hex takeoffs all rotating at the same speed, but at different speeds from the hex takeoffs of the other gear boxes. The hex takeoffs are connected through universal drive assemblies to conventional spindles.
Inventors
- 👤 T Rowlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:49
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/162; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3811; Y10T408/65; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
260 words
In a spindle-driving machine tool of the type wherein spindle-driving means is located above a worktable and is supported by upright means, the improvement comprising, in combination: a spindle-drive motor; transmission means coupled to said motor and having a plurality of output shafts, all of said transmission output shafts being coupled through selected gearing to a common drive shaft, means coupling said common drive shaft to said spindle-drive motor, said common drive shaft carrying a plurality of gears and each of said output shafts being coupled through gearing to a first shaft having a plurality of gears, each of which gears is selectively directly engageable with one of the gears carried by said common drive shaft, at least one of the gears carried by said common drive shaft having a different diameter from another and at least one of the gears carried by said first shaft having a different diameter from another to permit movement of the gears carried by said first shaft with respect to said common drive shaft without any gear carried by said common drive shaft impeding movement of said first shaft''s gears; a plurality of gear boxes each of which has means for coupling the input of said gear box to one of said output shafts whereby said plurality of gear boxes can be simultaneously coupled to said transmission means, each of said gear boxes including a gear mechanism for providing an output having a selected speed; and a plurality of takeoffs located at the output side of each said gear box and facing said worktable.
Claim 2
Dependent Claim
260 words
In a spindle-driving machine tool of the type wherein spindle-driving means is located above a worktable and is supported by upright means, the improvement comprising, in combination: a spindle-drive motor; transmission means coupled to said motor and having a plurality of output shafts, all of said transmission output shafts being coupled through selected gearing to a common drive shaft, means coupling said common drive shaft to said spindle-drive motor, said common drive shaft carrying a plurality of gears and each of said output shafts being coupled through gearing to a first shaft having a plurality of gears, each of which gears is selectively directly engageable with one of the gears carried by said common drive shaft, at least one of the gears carried by said common drive shaft having a different diameter from another and at least one of the gears carried by said first shaft having a different diameter from another to permit movement of the gears carried by said first shaft with respect to said common drive shaft without any gear carried by said common drive shaft impeding movement of said first shaft''s gears; a plurality of gear boxes each of which has means for coupling the input of said gear box to one of said output shafts whereby said plurality of gear boxes can be simultaneously coupled to said transmission means, each of said gear boxes including a gear mechanism for providing an output having a selected speed; and a plurality of takeoffs located at the output side of each said gear box and facing said worktable.
Claim 3
Dependent Claim
240 words
In a spindle-driving machine tool of the type wherein spindle-driving means is located above a worktable and is supported by upright means, and including a spindle drive motor, transmission means coupled to the motor and having a plurality of output shafts, and a transmission housing for enclosing said transmission means, the improvement comprising, in combination: a plurality of gear boxes, each of said gear boxes a. being enclosed in its own gear box housing, b. having means for coupling the input of said gear box to one of said output shafts whereby said plurality of gear boxes can be simultaneously coupled to said transmission means, c. being interchangeable with another, d. including a gear mechanism for providiNg an output having a selected speed, e. having a plurality of takeoffs at its output side facing said worktable, and f. having an attached device for cooperating with fastening means, to permit simple attachment and disattachment of said gear box to said transmission means, and means for providing rapid fastening of said gear boxes to said transmission means; all of said transmission output shafts being coupled to a common drive shaft carrying a plurality of gears; means coupling said common drive shaft to said spindle-drive motor; each of said output shafts being coupled through gearing to a first shaft having a plurality of gears, each of which gears is selectively directly engageable with one of the gears carried by said common drive shaft.
Claim 4
Dependent Claim
240 words
In a spindle-driving machine tool of the type wherein spindle-driving means is located above a worktable and is supported by upright means, and including a spindle drive motor, transmission means coupled to the motor and having a plurality of output shafts, and a transmission housing for enclosing said transmission means, the improvement comprising, in combination: a plurality of gear boxes, each of said gear boxes a. being enclosed in its own gear box housing, b. having means for coupling the input of said gear box to one of said output shafts whereby said plurality of gear boxes can be simultaneously coupled to said transmission means, c. being interchangeable with another, d. including a gear mechanism for providiNg an output having a selected speed, e. having a plurality of takeoffs at its output side facing said worktable, and f. having an attached device for cooperating with fastening means, to permit simple attachment and disattachment of said gear box to said transmission means, and means for providing rapid fastening of said gear boxes to said transmission means; all of said transmission output shafts being coupled to a common drive shaft carrying a plurality of gears; means coupling said common drive shaft to said spindle-drive motor; each of said output shafts being coupled through gearing to a first shaft having a plurality of gears, each of which gears is selectively directly engageable with one of the gears carried by said common drive shaft.
References Cited (Backward Citations)
US1721268A
Cited
US1958552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |