US3583270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slitters for travelling webs
Assignee: Masson Scott Thrissell Engineering Ltd
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Filing: 1968-10-08
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Granted: 1971-06-08
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Expires: 1988-10-08
Abstract
Abstract Apparatus for longitudinally slitting a travelling web has rotary cutters on mountings movable across the path of the web, clamps to secure the mountings in selected positions, and adjustable stops for limiting the travel of the mountings, so that while the apparatus is running with the cutters in first positions, the stops may be set and clamped in fresh positions, permitting the positions of the cutters to be quickly altered by releasing the mountings and moving them to the positions defined by the stops.
Inventors
- 👤 Edwin James Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:39
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/26; B26D7/2628; B26D7/2635; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/6595; Y10T83/6603; Y10T83/768; Y10T83/7809; Y10T83/7822; Y10T83/7826; Y10T83/808; Y10T83/817; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/929; Y10T83/9457; Y10T83/9488; Y10T83/949
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
Apparatus for longitudinally slitting a traveling web of paper or the like comprising means for feeding said web along a defined path, at least one cutter, a mounting for said cutter, said mounting being arranged for movement across said path parallel to the plane of said web, movable stop means disposed solely on one side of the path of the web for limiting movement of said mounting, releasable clamping means for said mounting, and releasable clamping means for said stop means, the respective clamping means being independently operable so that the stop means may be moved while the mounting is clamped in one selected position and thereafter the mounting may be moved to another selected position defined by the stop means.
Claim 2
Dependent Claim
121 words
Apparatus for longitudinally slitting a traveling web of paper or the like comprising means for feeding said web along a defined path, at least one cutter, a mounting for said cutter, said mounting being arranged for movement across said path parallel to the plane of said web, movable stop means disposed solely on one side of the path of the web for limiting movement of said mounting, releasable clamping means for said mounting, and releasable clamping means for said stop means, the respective clamping means being independently operable so that the stop means may be moved while the mounting is clamped in one selected position and thereafter the mounting may be moved to another selected position defined by the stop means.
Claim 3
Dependent Claim
22 words
Apparatus as claimed in claim 1, further comprising at least one rail, said mounting for said cutter being slidable upon said rail.
Claim 4
Dependent Claim
44 words
Apparatus as claimed in claim 2, in which the releasable clamping means for the mounting comprises a clamping device including biasing means for retaining said clamping device in a clamping position against said rail and a power device operable to release the clamping device.
Claim 5
Dependent Claim
15 words
Apparatus as claimed in claim 3, in which said power device is a pneumatic actuator.
Claim 6
Dependent Claim
38 words
Apparatus as claimed in claim 2, including means for introducing air under pressure between supporting surfaces of the mounting and of the rail to provide an air bearing whereby said mounting may be easily moved along said rail.
Claim 7
Dependent Claim
17 words
Apparatus as claimed in claim 1, including power means for moving the mounting to change its position.
Claim 8
Dependent Claim
30 words
Apparatus as claimed in claim 3, including power means for moving the mounting to change its position and a common control for operating the power means and the power device.
Claim 9
Dependent Claim
15 words
Apparatus as claimed in claim 6, in which said power means is a hydraulic actuator.
Claim 10
Dependent Claim
15 words
Apparatus as claimed in claim 6, in which said power means is an electric motor.
Claim 11
Dependent Claim
21 words
Apparatus as claimed in claim 1, in which the releasable clamping means for each stop means comprises a manually operable clamp.
Claim 12
Dependent Claim
72 words
Apparatus as claimed in claim 1, in which each stop means is settable to any one of three positions comprising a first position in which the stop means is operative to prevent movement of the mounting therepast in one direction, a second position in which said stop means is inoperative, and a third position in which the stop means is operative to prevent movement of the mounting therepast in the opposite direction.
References Cited (Backward Citations)
US1510656A
Cited
US1783944A
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US2591394A
Cited
US3176567A
Cited
US3176566A
Cited
US3332326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |