US3635112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decamber machine
Assignee: Rohr Inc
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Filing: 1970-05-25
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Granted: 1972-01-18
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Expires: 1990-05-25
Abstract
Abstract A table with a flat bed of substantial length, for example, 50 feet, has a shear blade fixedly mounted along each edge thereof, the cutting edges of the shear blades being parallel and spaced apart by a distance equal to the desired trimmed width of a worksheet to be trimmed thereon. Centering means centers a worksheet placed on the bed, and vacuum chucking means anchors such worksheet to the bed with marginal portions of the sheet overlying the shear blades. Compressed air may be introduced into the vacuum chucking means when centering a worksheet or moving such sheet along the bed to provide air bearing support for such sheet. The carriage drive means also may be used to draw a worksheet onto, and remove it from the bed. A pair of power-driven cutter carriages are mounted for synchronized guided movement, one along each side of the machine. Each carriage has a cutter wheel mounted for shearing engagement with one of the shear blades for simultaneously trimming both lateral edges of a worksheet to a condition of straightness and parallelism with each other. A presser roller moving ahead of each cutter wheel tends to flatten the worksheet and remove wrinkles.
Inventors
- 👤 Norman D Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:21
CPC Classifications
B; B23; B23D; B23D33/00; B23D33/02; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6472; Y10T83/6572; Y10T83/6576; Y10T83/6577; Y10T83/748; Y10T83/768; Y10T83/7751; Y10T83/7755; Y10T83/7763; Y10T83/7776; Y10T83/7863; Y10T83/808; Y10T83/889
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
164 words
A machine for decambering large metal sheets comprising, a bed of substantial length for supporting thereon a metal worksheet having an untrimmed width greater than a selected trimmed width, a shear blade mounted to extend lengthwise along each side of the bed, each shear blade having a shearing edge thereon, the shear blades being mounted with their shearing edges parallel and spaced apart by a distance equal to the selected trimmed width of such worksheet, a cutter carriage mounted at each side of the bed for movement therealong parallel to the shear blades, a cutter mounted on each carriage for shearing engagement with the shear blade on the same side of the bed as the carriage upon which the cutter is mounted as the carriages move the lengthwise along the bed, and power drive means for driving the carriageS in unison lengthwise along the bed for trimming off portions of such work sheet which extend laterally beyond the shearing edges of the shear blades.
Claim 2
Dependent Claim
164 words
A machine for decambering large metal sheets comprising, a bed of substantial length for supporting thereon a metal worksheet having an untrimmed width greater than a selected trimmed width, a shear blade mounted to extend lengthwise along each side of the bed, each shear blade having a shearing edge thereon, the shear blades being mounted with their shearing edges parallel and spaced apart by a distance equal to the selected trimmed width of such worksheet, a cutter carriage mounted at each side of the bed for movement therealong parallel to the shear blades, a cutter mounted on each carriage for shearing engagement with the shear blade on the same side of the bed as the carriage upon which the cutter is mounted as the carriages move the lengthwise along the bed, and power drive means for driving the carriageS in unison lengthwise along the bed for trimming off portions of such work sheet which extend laterally beyond the shearing edges of the shear blades.
Claim 3
Dependent Claim
29 words
A decambering machine as claimed in claim 1 wherein each carriage is mounted for rolling, guided movement on a track rigidly secured, one to each side of the bed.
Claim 4
Dependent Claim
68 words
A decambering machine as claimed in claim 2 wherein each track is a strong, rigid plate mounted in upright position, a first pair of grooved rollers mounted on each carriage for rolling, guiding, supporting engagement with the upper edge of their respective track plates, and a second pair of grooved rollers mounted on each carriage in rolling, guiding engagement with the lower edge of their respective track plates.
Claim 5
Dependent Claim
94 words
A decambering machine as claimed in claim 1 wherein a strong rigid cutter support frame is mounted on each cutter carriage, a cutter support base mounted for vertical adjustment on each support frame, each cutter being mounted on one of the support bases, and controlled power means operatively interposed between each cutter support base and its cutter support frame for moving the support base and its cutter between a lowered position with the cutter operatively engaging its shear blade, and an elevated position with the cutter upwardly clear of a worksheet on the bed.
Claim 6
Dependent Claim
131 words
A decambering machine as defined in claim 1 wherein the bed has a seal strip receiving groove therein extending lengthwise adjacent each longitudinal edge thereof, and has also a plurality of similar grooves extending transversely across the bed from one of the longitudinal grooves to the other to define, with the longitudinal grooves, worksheet-receiving areas of the bed, a sealing strip fitted into selected ones of the grooves to bound at least one area of the bed selected for the mounting of a work sheet thereon, and vacuum means communicating through openings in the bed with a worksheet-supporting surface of the bed within a selected area thereof bounded by such sealing strips fitted into such grooves for vacuum chucking of a worksheet supported on, and covering entirely, such selected bed area.
Claim 7
Dependent Claim
61 words
A decambering machine as claimed in claim 5 wherein a supply of pressurized air is connected through one side of a two-way valve to such bed openings, and a source of vacuum is connected through the other side of said valve to such bed openings for selectively evacuating, and supplying air at superatmospheric pressure, to a zone above such bed openings.
Claim 8
Dependent Claim
55 words
A decambering machine as claimed in claim 1 wherein a downwardly biased roller is mounted in closely spaced relation ahead of each cutter during a worksheet-trimming operation to roll along the bed and along a worksheet supported on the bed for trimming, thereby to urge such worksheet into closely superimposed, wrinkle-free relation with the bed.
Claim 9
Dependent Claim
35 words
A decambering machine as defined in claim 7 wherein the rollers are mounted on a swing-over support for positioning the rollers ahead of the cutters for movement selectively in either direction lengthwise of the bed.
Claim 10
Dependent Claim
79 words
A decambering machine as claimed in claim 1 wherein a plurality of laterally oppositely extensible pairs of centering rods are mounted at selected spaced intervals lengthwise of the bed, actuating means mounted to selectively extend and retract the centering rods of each pair thereof in unison, and worksheet-engaging means mounted on the outer end of each centering rod for engaging an edge of a worksheet supported on the bed and urging each worksheet toward centered position on the bed.
Claim 11
Dependent Claim
31 words
A decamber machine as claimed in claim 9 including means operatively interconnecting all of the centering rod actuating means for selectively extending and retracting all of the centering rods in unison.
Claim 12
Dependent Claim
90 words
A decambering machine as claimed in claim 10 wherein the centering rods of each pair thereof are mounted for axial slidable extension and retraction in opposite directions transversely of the bed, the actuating means for extending and retracting the centering rods of each pair thereof comprises an actuator pivotally supported between each pair of the centering rods, and all of the actuators are operatively connected to a push-pull member extending longitudinally of the bed for extension and retraction of the centering rods in unison upon actuation of the push-pull member.
Claim 13
Dependent Claim
80 words
A decambering machine as claimed in claim 9 wherein a worksheet-enagaging arm is mounted on the laterally outward end of each centering rod for pivotal movement between upright and downswung position, each of said worksheet-engaging arms being of a length when swung to upright position to engage a worksheet supported on said bed, and actuating means operatively connected to swing said arms between their upright, worksheet-engaging position, and downswung position below the level of a worksheet mounted on said bed.
Claim 14
Dependent Claim
115 words
A decambering machine as claimed in claim 12 wherein each worksheet-engaging arm is secured to its respective centering rod, each centering rod is mounted for combined rotative and axial slidable movement, a lever arm is secured at one end thereof to each centering rod, a pair of push-pull links are pivotally connected one to the lever arms secured to all of the centering rods extensible toward each side of the bed, and controlled means for actuating the two push-pull links in unison, selectively to rotatively move the centering rods in one direction to swing the work-engaging arms to their upright position, and in the other direction to swing the work-engaging arms to their downswung position.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |