Patent US3240861A successfully refreshed from Google Patents.
Patent US3760668A successfully refreshed from Google Patents.
US3760668A
Expired / Lapsed
US
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Workpiece support/apparatus and method for shearing
Assignee: SPAULDING Inc
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Filing: 1972-08-03
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Granted: 1973-09-25
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Expires: 1992-08-03
Abstract
Abstract Heavy metal plate is sheared using a workpiece support combining a conveyor supported on a pneumatic suspension so that the support can tip and move while supporting the plate during shearing.
Inventors
- 👤 R Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:32
CPC Classifications
B; B23; B23D; B23D33/00; B21; B21D; B21D43/00; B21D43/28; B21D43/287; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/202; Y10T83/2092; Y10T83/2198; Y10T83/97
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
129 words
A self contained workpiece support and conveyor assembly for use in combination with a shear comprising a base for placing on a floor or the like adjacent the shear; a workpiece support subassembly that is positioned above the said base, and has a foward edge; said support subassembly further comprising a plurality of generally horizontal conveyor means located in about the same plane; a plurality of means connected between said base and said support subassembly to resiliently support said workpiece support subassembly at a predetermined position above said base and to each permit downward tilting motion of the entire workpiece support subassembly by each such means independently moving substantially vertically responsive to the blade shearing the workpiece and thereafter to return said workpiece support subassembly to the starting position.
Claim 2
Dependent Claim
129 words
A self contained workpiece support and conveyor assembly for use in combination with a shear comprising a base for placing on a floor or the like adjacent the shear; a workpiece support subassembly that is positioned above the said base, and has a foward edge; said support subassembly further comprising a plurality of generally horizontal conveyor means located in about the same plane; a plurality of means connected between said base and said support subassembly to resiliently support said workpiece support subassembly at a predetermined position above said base and to each permit downward tilting motion of the entire workpiece support subassembly by each such means independently moving substantially vertically responsive to the blade shearing the workpiece and thereafter to return said workpiece support subassembly to the starting position.
Claim 3
Dependent Claim
32 words
A subassembly according to claim 1 wherein said means to resiliently support includes means on one side permitting a longer stroke on one side of said support than on the other side.
Claim 4
Dependent Claim
22 words
A subassembly according to claim 1 wherein each of said means to support is a fluid pressurized inflatable and collapsible resilient member.
Claim 5
Dependent Claim
64 words
A subassembly according to claim 1 wherein each of said means to support is a pneumatic means having a substantially vertically reciprocable element that in response to said blade shearing action gradually collapse by releasing pressure from within to permit said downward tilting motion until the cutting or shearing is completed and then to reset by inflating sufficiently to return to the starting position.
Claim 6
Dependent Claim
45 words
A subassembly according to claim 1 wherein said means to support include a plurality of fluid pressure responsive resilient bellows members and motion control means for allowing substantially vertical motion of the bellows while restraining substantially all lateral and loNgitudinal motion in the horizontal plane.
Claim 7
Dependent Claim
15 words
A subassembly according to claim 5 wherein said bellows members are resilient hollow flexible members.
Claim 8
Dependent Claim
46 words
A subassembly according to claim 5 wherein said means for allowing while restraining comprises a cam secured to one of said base and subassembly and a roller type follower secured to the other of said base and subassembly, said cam having a substantially vertical cam surface.
Claim 9
Dependent Claim
32 words
A subassembly according to claim 7 wherein said cam surface further includes a wedge spaced from said surface, said follower being received therebetween when said subassembly is level with the shear table.
Claim 10
Dependent Claim
133 words
In combination with a shear having a table and a raked blade mounted on a ram, an improved workpiece support assembly that comprises -a workpiece support subassembly having a foward edge spaced from the shear table by a gap smaller than said blade thereby underlying at least a portion of said blade and adjustable vertically so that the upper surface of said subassembly is substantially coplanar with the upper surface of the shear table; means to resiliently support said subassembly and to permit the entire subassembly to move downward and to tilt responsive to the blade shearing a workpiece and after shearing to restore the subassembly to the starting position; and there being no connecting member between the shear and the assembly to cause coaction therebetween except the workpiece during a shearing operation.
Claim 11
Dependent Claim
133 words
In combination with a shear having a table and a raked blade mounted on a ram, an improved workpiece support assembly that comprises -a workpiece support subassembly having a foward edge spaced from the shear table by a gap smaller than said blade thereby underlying at least a portion of said blade and adjustable vertically so that the upper surface of said subassembly is substantially coplanar with the upper surface of the shear table; means to resiliently support said subassembly and to permit the entire subassembly to move downward and to tilt responsive to the blade shearing a workpiece and after shearing to restore the subassembly to the starting position; and there being no connecting member between the shear and the assembly to cause coaction therebetween except the workpiece during a shearing operation.
Claim 12
Dependent Claim
30 words
In the combination according to claim 9 an assembly that further comprises -a base on which said means to resiliently support is located and above which said subassembly is supported.
Claim 13
Dependent Claim
73 words
A subassembly according to claim 9 wherein said means to support are a plurality of fluid pressure responsive bellows members and further include as a device to permit said downward tilting motion a pair of cam and follower systems both for guiding said subassembly in substantially vertical direction and each for restraining any substantial motion laterally and longitudinally, respectively, and restoring same to the starting position at the end of each shearing operation.
Claim 14
Dependent Claim
40 words
A subassembly according to claim 11 wherein each cam is a substantially vertical surface, each follower is a roller, and a wedge is supported adjacent said surface to receive said roller therebetween when said subassembly is at its starting position.
Claim 15
Dependent Claim
25 words
A subassembly according to claim 9 wherein said forward edge has a fixed apron plate and a movable kicker plate in side by side alignment.
Claim 16
Dependent Claim
129 words
A process for shearing a workpiece with a guillotine-type blade comprising the steps of -providing a resiliently supported support that is spaced from the shear by a gap insufficient to allow the upper shear blade to pass without striking the forward edge of said support; positioning a workpiece in the shear across the gap and on the support forward edge; moving the blade down and engaging and shearing the workpiece; and vertically tilting the support both laterally and longitudinally while restraining substantially all horizontal motion of the workpiece or the support in response to the motion of the workpiece in said moving, engaging, and shearing step, that lateral edge of said support which is the last to be passed by the blade being the last edge to move downwardly.
Claim 17
Dependent Claim
129 words
A process for shearing a workpiece with a guillotine-type blade comprising the steps of -providing a resiliently supported support that is spaced from the shear by a gap insufficient to allow the upper shear blade to pass without striking the forward edge of said support; positioning a workpiece in the shear across the gap and on the support forward edge; moving the blade down and engaging and shearing the workpiece; and vertically tilting the support both laterally and longitudinally while restraining substantially all horizontal motion of the workpiece or the support in response to the motion of the workpiece in said moving, engaging, and shearing step, that lateral edge of said support which is the last to be passed by the blade being the last edge to move downwardly.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |