Patent US3929048A successfully refreshed from Google Patents.
US3929048A
Expired / Lapsed
US
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Reciprocating gang saw
Assignee: CONSOLIDATED SAWMILL MACHINERY INTERNATIONAL Inc
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Filing: 1974-11-11
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Granted: 1975-12-30
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Expires: 1994-11-11
Abstract
Abstract A reciprocating gang saw in which each elongated saw blade of a horizontally extending row or gang of parallel, vertically extending such blades is connected at its upper and lower ends with respective upper and lower crank shafts. The crank shafts are supported for rotation about axes extending respectively along the upper and lower ends of the blades. Each shaft has a plurality of cranks that are offset with respect to each other so that the blades successively engage and cut material fed past them at different intervals.
Inventors
- 👤 John W Mcgehee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
B; B27; B27B; B27B3/00; B27B3/02; B27B3/12; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6584; Y10T83/6587; Y10T83/6592; Y10T83/6593; Y10T83/687; Y10T83/6895; Y10T83/7015; Y10T83/7025; Y10T83/705; Y10T83/7055
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
205 words
In a gang saw that includes a row of elongated saw that includes a row of elongated saw blades in parallel, spaced relation having cutting teeth along one of their longitudinally extending edges, which teeth face the same direction for sawing engagement with the material to be cut thereby, the improvement comprising: a. blade supporting means rotatable about parallel axes respectively extending along the opposite ends of said row rotatably connected with the ends of each of said blades at one of a plurality of points spaced from said respective axes and from each other for movement of said ends and said blades in annular paths in parallel planes with the ends of each blade offset from the others around said axes for successive sawing engagement of said blades with material fed thereto and therepast upon rotation of said blade supporting means in one direction, b. means for supporting material to be cut to and past said cutting teeth during said rotation of said blade supporting means, and c. power means connected with one of said blade supporting means for rotating it about its axis for successively moving the blades of said row into cutting engagement with material fed to and past said cutting teeth.
Claim 2
Dependent Claim
205 words
In a gang saw that includes a row of elongated saw that includes a row of elongated saw blades in parallel, spaced relation having cutting teeth along one of their longitudinally extending edges, which teeth face the same direction for sawing engagement with the material to be cut thereby, the improvement comprising: a. blade supporting means rotatable about parallel axes respectively extending along the opposite ends of said row rotatably connected with the ends of each of said blades at one of a plurality of points spaced from said respective axes and from each other for movement of said ends and said blades in annular paths in parallel planes with the ends of each blade offset from the others around said axes for successive sawing engagement of said blades with material fed thereto and therepast upon rotation of said blade supporting means in one direction, b. means for supporting material to be cut to and past said cutting teeth during said rotation of said blade supporting means, and c. power means connected with one of said blade supporting means for rotating it about its axis for successively moving the blades of said row into cutting engagement with material fed to and past said cutting teeth.
Claim 3
Dependent Claim
44 words
The gang saw of claim 1, in which: c. said spacing of said points being equal from said axes and from each other whereby a plurality of said blades will be in cutting engagement with said material during rotation of said blade supporting means.
Claim 4
Dependent Claim
37 words
The gang saw of claim 1, in which: c. said blade supporting means comprises a pair of parallel shafts each formed intermediate its ends with a plurality of adjacent cranks, each being at one of said points.
Claim 5
Dependent Claim
45 words
In the gang saw of claim 3, said blade supporting means including: d. a rigid frame having stationary bearings supporting said shafts spaced one above the other, and e. said power means being an electric motor directly connected with the lower shaft of said pair.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |