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US3805652A
Expired / Lapsed
US
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Automatic tail cutter
Assignee: IND RES AND ENG Inc
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Filing: 1972-05-03
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Granted: 1974-04-23
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Expires: 1992-05-03
Abstract
Abstract An automatic tail cutter for rapidly cutting paper, plastic, aluminum, or other material exiting from a machine for producing the material in a continuous strip or sheet, the tail cutter having a knife blade which is pivotably mounted on a carriage. The carriage is slidably mounted for movement by a fluid actuated drive means along a guide track positioned transversely of the direction of movement of the strip of paper. The carriage is connected to a chain drive mechanism contained within a housing on which the guide track is mounted, the chain drive mechanism being powered by a fluid pressure operated piston and cylinder assembly. The rate of movement of the knife carriage is determined by the relative diameters of the chain sprockets of the chain drive mechanism and the rate of movement of the piston and piston rod relative to the cylinder of the fluid pressure operated piston and cylinder assembly. The housing and guide track are mounted for vertical movement relative to the plane of the paper strip by a parallelogram linkage, with vertical movement of the housing being obtained by a fluid actuated support means including a second fluid pressure operated piston and cylinder assembly. The supply of fluid pressure to both fluid pressure operated piston and cylinder assemblies is controlled by means of an automatic electrical control circuit to cut the continuous sheet of material for winding into separate rolls.
Inventors
- 👤 Londe E La
- 👤 G Bartels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:30
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/56; B26D1/565; B26D5/00; B26D5/02; B26D5/04; B65; B65H; B65H19/00; B65H19/22; B65H19/26; B65H19/265; Y; Y10; Y10T; Y10T83/00; Y10T83/263; Y10T83/485; Y10T83/49; Y10T83/869; Y10T83/8748; Y10T83/8749; Y10T83/8821; Y10T83/8822; Y10T83/8858; Y10T83/8866
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
137 words
An automatic strip cutter apparatus comprising, an elongated housing adapted for mounting transversely relative to a path of movement of a continuous moving strip of sheet material to be cut, a guide track provided on said housing, a cutter knife carriage mounted for movement along said track, said carriage having a cutting knife operatively attached thereto, fluid pressure actuated drive means for moving said carriage along said track and stopping said movement, mounting means for movably supporting said elongated housing for movement toward and away from said continuous strip, fluid pressure actuated support means for adjusting the position of said housing, said track and said cutter knife toward and away from said strip, and a control means for energizing and de-energizing said support means and said drive means in a predetermined order for operating said cutter apparatus.
Claim 2
Dependent Claim
137 words
An automatic strip cutter apparatus comprising, an elongated housing adapted for mounting transversely relative to a path of movement of a continuous moving strip of sheet material to be cut, a guide track provided on said housing, a cutter knife carriage mounted for movement along said track, said carriage having a cutting knife operatively attached thereto, fluid pressure actuated drive means for moving said carriage along said track and stopping said movement, mounting means for movably supporting said elongated housing for movement toward and away from said continuous strip, fluid pressure actuated support means for adjusting the position of said housing, said track and said cutter knife toward and away from said strip, and a control means for energizing and de-energizing said support means and said drive means in a predetermined order for operating said cutter apparatus.
Claim 3
Dependent Claim
57 words
An automatic tail cutter as claimed in claim 1, further comprising a cutter knife holder pivotably mounted on said knife carriage, said cutter knife being attached to said knife holder, whereby said cutter knife is free to pivot and cut in a plurality of directions, depending on the direction of force being applied against the cutter knife.
Claim 4
Dependent Claim
99 words
An automatic tail cutter as claimed in claim 1, further comprising water spray means operatively connected to said control means and adapted to spray water onto material being wound onto rolls, said control means including a time delay energizing means, said control means actuating said water spray means aT the end of a cutting operation of said knife of said tail cutter, said time delay energizing means maintaining operation of said water spray means for a pre-selected time period following the end of the cutting operation and de-activating said water spray at the end of said pre-selected time period.
Claim 5
Dependent Claim
86 words
An automatic tail cutter as claimed in claim 1, wherein said mounting means comprises a first and a second support bracket attached to a paper machine in spaced-apart relationship to each other, said housing being movably attached to said support brackets by two equal length parallel supporting links connected at each end of said housing, said parallel supporting links and each of said support brackets and said housing forming a parallelogram linkage for maintaining said housing in a vertical position during vertical movement of said housing.
Claim 6
Dependent Claim
66 words
An automatic tail cutter as claimed in claim 4, further comprising a first and a second horizontal bar positioned parallel to each other and having their ends pivotably supported by said support brackets, each of said two equal length parallel supporting links at each end of said housing having one end rigidly attached to one of said first and second horizontal bars adjacent said support brackets.
Claim 7
Dependent Claim
40 words
An automatic strip cutter in accordance with claim 1 in which the drive means and the support means are cylinder means connected to a source of fluid pressure through electrically controlled valve which are selectively operated by said control means.
Claim 8
Dependent Claim
155 words
An automatic paper tail cutter as claimed in claim 6, wherein said electrically controlled valves comprise a first and a second solenoid operated control valve connected in a fluid passage means between a fluid pressure supply source and said fluid pressure actuated drive means, said first and second solenoid operated valves being operatively connected to said control means, said first solenoid operated valve adapted to supply fluid pressure to said fluid pressure actuated drive means to move said knife carriage in a cutting direction, said second solenoid operated valve adapted to supply fluid pressure to said fluid pressure actuated drive means to return said knife carriage to the start position, and a third solenoid operated valve connected in said passage means between said fluid pressure supply source and said fluid pressure actuated support means which includes piston and cylinder means to selectively raise and lower said housing in response to signals from said control system.
Claim 9
Dependent Claim
144 words
An automatic tail cutter as claimed in claim 7, wherein said control means includes a first and second sensing means for sensing the position of said knife carriage, said first sensing means causing said first solenoid operated valve to be de-energized when said knife carriage reaches a predetermined position of travel along said guide track, said second sensing means causing said third solenoid operated valve means to be de-energized to lower said housing from its upraised vertical position, and a third sensing means located along the path of vertical travel of said housing to sense the pre-set lowermost vertical position of said housing, said third sensing means being operatively connected to said third solenoid operated valve and adapted to energize said second solenoid operated valve to return said knife carriage to the initial starting position when said housing reaches its pre-set lowermost vertical position.
Claim 10
Dependent Claim
37 words
An automatic tail cutter as claimed in claim 1, further comprising a chain drive means contained within said housing, said chain drive means being operatively connected between said fluid pressure drive means and said cutter blade carriage.
Claim 11
Dependent Claim
238 words
An automatic tail cutter as claimed in claim 9, wherein said chain drive means comprises a first and a second sprocket wheel rotatably supported within said housing adjacent each end thereof, a first chain passing around each of said first and second sprockets, said first chain being drivingly connected to said carriage, a third sprocket Rotatably supported in said housing coaxially with said first sprocket and drivingly connected thereto, said third sprocket having a smaller diameter than said first sprocket, a fourth sprocket rotatably supported within said housing between said first and second sprockets, said fourth sprocket having a diameter greater than the diameter of said third sprocket, an endless chain drivingly connected around said third and fourth sprockets, a fifth sproket rotatably supported in said housing coaxially with said fourth sprocket and drivingly connected thereto, said fifth sprocket having a diameter smaller than said fourth sprocket, a sixth sprocket rotatably supported in said housing between said fourth and fifth sprockets and said second sprocket, an endless chain drivingly connected around said fifth and sixth sprockets, said fluid pressure actuated drive means being operatively connected to said endless chain connected around said fifth and sixth sprockets to drive said cutter blade carriage at a predetermined rate along said guide track, said rate of travel of said carriage being determined by the ratios of the diameters of the sprockets and the rate of said fluid pressure actuated drive means.
Claim 12
Dependent Claim
70 words
An automatic tail cutter as claimed in claim 9 further comprising an electrically disengaged brake means operatively connected to said knife carriage and to said control means, said electrically disengaged brake means being selectively supplied with electrical current by said control means to disengage said brake means during movement of said knife carriage along said guide track and to de-energize said brake means to stop movement of said knife carriage.
Claim 13
Dependent Claim
195 words
An automatic tail cutter as claimed in claim 6, wherein said fluid pressure actuated drive means comprises an air-over-oil piston and cylinder assembly, said assembly having a cylinder divided into a first and a second chamber, a first and a second piston slidably contained in each first and second chambers, respectively, said first and second pistons being attached to a piston rod, the end of said piston rod extending out of said cylinder being operatively connected to said knife carriage, said first chamber being operatively connected to said fluid pressure supply source through said conduit means and one of said electrically controlled solenoid valves, said second chamber having a fluid passage port located at each end thereof, a conduit means connected between said ports at each end of said second chamber, a manually adjustable flow control means and a check valve means connected in said conduit means between said ports, said second chamber being filled with a viscous fluid, said fluid control means being adjustable to control the rate of movement of said first and second pistons and said piston rod in response to fluid pressure supplied to said first chamber through said conduit means.
Claim 14
Dependent Claim
149 words
An automatic tail cutter as claimed in claim 12, wherein said conduit means connected between the ports of said second chamber comprises two passages, said manually adjustable valve means includes a flow control valve connected in each of said passages, and said check valve means comprises a one-way check valve connected in each of said passages, each one-way check valve blocking fluid flow in a direction opposite the other, and an electrically actuated solenoid valve connected in the passage allowing fluid flow when the piston rod is being extended from said housing, said solenoid valve being operatively connected to said control means and energized thereby to open said valve and allow flow therethrough when said piston rod is being operatively extended from said cylinder by application of fluid pressure to said first chamber and blocking said flow when de-energized to act as a hydraulic brake for said piston rod.
Claim 15
Dependent Claim
153 words
An automatic tail cutter as claimed in claim 13 wherein said electrically controlled valves comprises a first and a second solenoid operated control valve connected in said passage means between said fluid pressure sUpply source and said fluid pressure actuated drive means, said first and second solenoid operated valves being operatively connected to said control system, said first solenoid operated valve adapted to supply fluid pressure to said fluid pressure actuated drive means to move said knife carriage in a cutting direction, said second solenoid operated valve adapted to supply fluid pressure to said fluid pressure actuated drive means to return said knife carriage to the start position, and a third solenoid operated valve connected in said passage means between said fluid pressure supply source and said fluid pressure actuated support means which includes piston and cylinder means to selectively raise and lower said housing in response to signals from said control system.
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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |