US3740924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable overhead crimper
Assignee: Beloit Corp
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Filing: 1971-06-14
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Granted: 1973-06-26
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Expires: 1991-06-14
Abstract
Abstract Apparatus for folding down and tucking in the ends of a wrapper extending beyond the ends of a roll of paper, by the use of rotatably driven crimper paddles. The roll is supported on two parallel spaced rolls rotatably driven to rotate the roll during crimping in a direction opposite to the direction of rotation of the crimping paddles. A cross beam is supported above the roll in a cross machine direction and has a separate crimper carriage for each end of the roll mounted to ride along the cross beam. The crimper carriages each have a telescopic arm carrying the crimper paddles at their lower ends, which can be retracted within the carriage to clear the maximum diameter of roll that can be wrapped, and to sit in the center of the machine when not in use. The crimper arms are lowered by power when at the center of the machine to within an inch of the roll. Lowering movement of the crimper carriages then stops. The crimper carriages are then moved outwardly beyond the ends of the roll and lowered with the crimper paddles positioned into crimping positions along the ends of the roll. The drive to the crimper paddles is then started and the roll is rotatably driven by its support rolls for little more than one revolution of the roll to completely tuck in the projecting end portions of the wrapper.
Inventors
- 👤 J Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:38
CPC Classifications
B; B65; B65B; B65B25/00; B65B25/14; B65B25/146; B65B25/148; B65B11/00; B65B11/06; B65B11/08; B65B11/10; B65B11/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
251 words
In a crimping apparatus for folding down and tucking in the ends of a wrapper extending around and beyond opposite ends of a roll of paper, and in combination with a roll stand supporting and rotatably driving a roll of paper, including a pair of parallel spaced rolls driven at a uniform angular velocity, a cross beam suppoRted above the roll stand and extending in a cross machine direction, a separate crimping assembly for each end of the roll, movably mounted on said cross beam, each crimping assembly including a carriage supported to ride along said cross beam, a vertically extending crimper arm carried by each carriage and guided for telescopic movement relative thereto in a vertical direction, a crimper paddle mounted on each crimper arm for rotation about an axis parallel to the axis of the roll and facing the end of the roll, power means moving said carriages inwardly toward the center of the roll at the termination of a crimping operation and outwardly beyond the ends of the roll to initiate a next succeeding crimping operation, other power means raising said arms and crimper paddles above the top of the roll, to accommodate movement therealong to the transverse center of the roll, and accommodating lowering of said arms to bring the crimper paddles along opposite ends of the roll, to crimp the projecting ends of the wrapper to the roll by rotatably movement of said crimper paddles in directions opposite to the direction of rotation of the roll.
Claim 2
Dependent Claim
251 words
In a crimping apparatus for folding down and tucking in the ends of a wrapper extending around and beyond opposite ends of a roll of paper, and in combination with a roll stand supporting and rotatably driving a roll of paper, including a pair of parallel spaced rolls driven at a uniform angular velocity, a cross beam suppoRted above the roll stand and extending in a cross machine direction, a separate crimping assembly for each end of the roll, movably mounted on said cross beam, each crimping assembly including a carriage supported to ride along said cross beam, a vertically extending crimper arm carried by each carriage and guided for telescopic movement relative thereto in a vertical direction, a crimper paddle mounted on each crimper arm for rotation about an axis parallel to the axis of the roll and facing the end of the roll, power means moving said carriages inwardly toward the center of the roll at the termination of a crimping operation and outwardly beyond the ends of the roll to initiate a next succeeding crimping operation, other power means raising said arms and crimper paddles above the top of the roll, to accommodate movement therealong to the transverse center of the roll, and accommodating lowering of said arms to bring the crimper paddles along opposite ends of the roll, to crimp the projecting ends of the wrapper to the roll by rotatably movement of said crimper paddles in directions opposite to the direction of rotation of the roll.
Claim 3
Dependent Claim
40 words
The crimping apparatus of claim 1, including means on said arms limiting movement of said crimper arms downwardly along the ends of the roll and holding the roll in place to withstand the forces impressed thereon by said crimper paddles.
Claim 4
Dependent Claim
44 words
The crimping apparatus of claim 2, wherein the means on said arms limiting downward movement of said arms and holding the roll in place comprise a pair of press wheels coming down into engagement with the roll upon lowering movement of said crimper paddles.
Claim 5
Dependent Claim
48 words
The crimping apparatus of claim 3, including a movable mounting for one of said press wheels accommodating limited movement thereof, when said press wheel settles on the roll, and a limit switch tripped by said movable mounting, limiting downward movement of the associated crimper arm and crimper paddle.
Claim 6
Dependent Claim
55 words
The crimping apparatus of claim 3, including sensing means on each carriage sensing the roll upon downward movement of the associated carriage and stopping downward travel of said carriage toward the roll as said carriages are positioned on opposite sides of the transverse center of the roll, and then initiating outward travel of said carriages.
Claim 7
Dependent Claim
68 words
The crimping apparatus of claim 5, wherein the sensing means includes an actuator arm pivoted to said telescopic arm and depending therefrom, a separate follower roller on the end of each actuator arm engaging the roll upon downward movement of said telescopic crimper arms and said crimper paddles, and means biasing said actuator arms and follower rollers into engagement with the roll of paper under a preselected pressure.
Claim 8
Dependent Claim
87 words
The crimping apparatus of claim 6, including a separate limit switch actuated by each actuator arm upon engagement with the roll to stop downward travel of said crimper arms and paddles and effect outward travel of said carriages and crimper paddles beyond the ends of the roll, and forcing said follower rollers to force down the extended portions of the wrapper as said follower rollers move beyond the ends of the roll and actuate said limit switches to continue downward travel of said crimper arms and paddles.
Claim 9
Dependent Claim
48 words
The crimping apparatus of claim 7, wherein the means biasing each arm and follower roller to engage the roll under pressure and force down the extended portions of the wrapper, as the follower roller moves beyond the ends of the roll, comprise a fluid pressure operated rotary motor.
Claim 10
Dependent Claim
101 words
The crimping apparatus of claim 8, wherein the actuator arm is pivoted intermediate its ends and the end of the arm opposite the follower roller releases the limit switch as said follower roller engages the surface of the roll, to stop downward travel of the associated crimper arm and initiate outward travel thereof and trips the limit switch as the rotary motor forces the follower roller beneath the periphery of tHe roll beyond the end of the roll to stop outward movement of the associated carriage and crimper paddle and continue downward travel of said telescopic crimper arms and crimper paddles.
Claim 11
Dependent Claim
115 words
The crimping apparatus of claim 9, wherein the means on said arms limiting movement of said arms downwardly along the ends of the roll, and holding the roll in place to withstand the forces impressed thereon by said crimper paddles comprise press wheels mounted on said crimper arms in equally spaced relation on opposite sides of the axis of rotation of the roll of paper, and wherein means operated by one of said press wheels is effective to stop downward travel of said telescopic arms and crimper arms and accommodate rotation of said crimper paddles and roll of paper, to crimp the projecting ends of the wrapper to the ends of the roll of paper.
Claim 12
Dependent Claim
67 words
The crimping apparatus of claim 10, including a movable mounting arm freely rotatably supporting one of said press wheels and accommodating limited upward movement of said press wheel upon engaging the periphery of the roll and a limit switch operated by said arm and effective to stop downward movement of the associated crimper arm and paddle indicating that the crimper is properly positioned and ready to crimp.
Claim 13
Dependent Claim
46 words
The crimping apparatus of claim 11, including a potentiometer mounted on one of said crimper arms and sensing roll diameter, and means operated by said potentiometer timing rotation of the roll of paper and crimper paddle for one revolution of the roll plus a small overtravel.
Claim 14
Independent Claim
303 words
An apparatus for crimping the ends of a wrapper extending around and beyond opposite ends of a roll of paper, rotatably driven during the crimping operation, comprising, a cross beam supported above the roll of paper and extending parallel to the axis of rotation of the roll of paper, and includes two parallel spaced beam members, a pair of carriages mounted on said cross beam and extending between said beam members, rack and pinion means for moving said carriages along said beam members, toward the center of said cross beam at the termination of a crimping operation and outwardly along said cross beam beyond the ends of the roll of paper to effect a next succeeding crimping operation, each carriage having a crimper arm mounted for telescopic movement relative thereto, cylinder and piston means extensibly and retractably moving the crimper arms toward and from the roll of paper relative to the carriage, a cross beam carried by each crimper arm, a crimper paddle rotatably mounted on said cross beam adjacent one end thereof, a freely rotatable press wheel coaxial with said crimper paddle for engagement with the top of the roll to one side of the center of the roll, a second freely rotatable press wheel mounted on said cross beam and spaced from the axis of rotation of the roll a distance equal to the spacing of said first press roll from the axis of rotation of the roll of paper and on the opposite side thereof to straddle the roll of paper and hold it firmly in place during the crimping operation, and movable mounting means for said second press wheel, permitting limited movement of said press wheel upon settling of the press rolls on the roll and effective to indicate the crimper is in proper position and ready to crimp.
Claim 15
Independent Claim
303 words
An apparatus for crimping the ends of a wrapper extending around and beyond opposite ends of a roll of paper, rotatably driven during the crimping operation, comprising, a cross beam supported above the roll of paper and extending parallel to the axis of rotation of the roll of paper, and includes two parallel spaced beam members, a pair of carriages mounted on said cross beam and extending between said beam members, rack and pinion means for moving said carriages along said beam members, toward the center of said cross beam at the termination of a crimping operation and outwardly along said cross beam beyond the ends of the roll of paper to effect a next succeeding crimping operation, each carriage having a crimper arm mounted for telescopic movement relative thereto, cylinder and piston means extensibly and retractably moving the crimper arms toward and from the roll of paper relative to the carriage, a cross beam carried by each crimper arm, a crimper paddle rotatably mounted on said cross beam adjacent one end thereof, a freely rotatable press wheel coaxial with said crimper paddle for engagement with the top of the roll to one side of the center of the roll, a second freely rotatable press wheel mounted on said cross beam and spaced from the axis of rotation of the roll a distance equal to the spacing of said first press roll from the axis of rotation of the roll of paper and on the opposite side thereof to straddle the roll of paper and hold it firmly in place during the crimping operation, and movable mounting means for said second press wheel, permitting limited movement of said press wheel upon settling of the press rolls on the roll and effective to indicate the crimper is in proper position and ready to crimp.
Claim 16
Dependent Claim
51 words
The crimping apparatus of claim 13, wherein the movable mounting means for the second press wheel includes, an arm pivoted to the cross beam for movement about an axis parallel to the axis of rotation of the press wheel, and means limiting movement of said arm in upward and downward directions.
Claim 17
Dependent Claim
41 words
The crimping apparatus of claim 14, including a limit switch tripped by movement of said arm in an upward direction and effective to limit lowering movement of said crimper arm and indicate the crimper is properly positioned and ready to crimp.
Claim 18
Dependent Claim
75 words
The crimping apparatus of claim 13, including an actuator arm pivoted to said crimper arm and depeNding therefrom, a follower roller on the end of said actuator arm, means biasing said actuator arm in engagement with the roll of paper, said actuator arm being effective to limit downward movement of the associated crimper arm short of the roll of paper and initiating outward travel of said carriage toward the end of the roll of paper.
Claim 19
Dependent Claim
85 words
The crimping apparatus of claim 16, wherein the means biasing the actuator arm and follower roller to engage the periphery of the roll of paper, comprises a fluid pressure operated rotary actuator, forming a support for said actuator arm and forcing said actuator arm to fold down the projecting end portion of the wrapper as said follower roller moves beyond the end of the roll and effective to initiate downward travel of said crimper arm and paddle along the end of the roll of paper.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |