US3610496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tension controller
Assignee: Individual
•
Filing: 1967-12-06
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Granted: 1971-10-05
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Expires: 1987-12-06
Abstract
Abstract An automatic tension controller for a web material machine which has an input shaft and an output shaft on which the web material may be tensioned or overfed selectively during the winding operation, the controller including responsive devices indicating the rotation of the input and output shafts and signalling means providing an electrical pulse when the rotation of one shaft differs from the rotation of the other. The signalling means are operative to prevent the provision of electrical pulses when the rotation of the shafts is within preselected and adjustable tolerances. The shafts are driven by an adjustable differential drive, and a pulse-responsive device controls the differential drive to increase and/or decrease the speeds of the input and output shafts when pulses are provided by the signalling means.
Inventors
- 👤 Carroll H Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:18
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/188; B65H23/1888; H; H02; H02P; H02P5/00; H02P5/46
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
135 words
An automatic stretch controller for a web material machine which has an input and output shaft on which the web material may be tensioned or overfed selectively during the winding operation, the controller comprising: adjustable, cyclically operable first responsive means in driven contact with and indicating rotation of the input shaft; adjustable, cyclically operable second responsive means in driven contact with and indicating rotation of the output shaft; first signalling means providing an electrical pulse when said first responsive means indicates the rotation of the input shaft to be greater by a preselected amount than the rotation of the output shaft; and second signalling means providing an electrical pulse when said second responsive means indicates the rotation of the output shaft to be greater by a preselected amount than the rotation of the input shaft.
Claim 2
Dependent Claim
135 words
An automatic stretch controller for a web material machine which has an input and output shaft on which the web material may be tensioned or overfed selectively during the winding operation, the controller comprising: adjustable, cyclically operable first responsive means in driven contact with and indicating rotation of the input shaft; adjustable, cyclically operable second responsive means in driven contact with and indicating rotation of the output shaft; first signalling means providing an electrical pulse when said first responsive means indicates the rotation of the input shaft to be greater by a preselected amount than the rotation of the output shaft; and second signalling means providing an electrical pulse when said second responsive means indicates the rotation of the output shaft to be greater by a preselected amount than the rotation of the input shaft.
Claim 3
Dependent Claim
36 words
A controller as claimed in claim 1, said first and second signalling means operative to preclude the provision of electrical pulses when the rotation of the input and output shafts are within preselected and adjustable tolerances.
Claim 4
Dependent Claim
55 words
A controller as claimed in claim 1 wherein an adjustable differential drive drives the input and output shafts, the controller further comprising electrical pulse responsive means controlling the adjustable differential drive to increase and decrease the speeds of the input and output shafts when electrical pulses are provided by said first and second signalling means.
Claim 5
Dependent Claim
36 words
A controller as claimed in claim 3, further comprising calibrated means for establishing the input and output shaft speed to obtain a preselected percentage of tension or overfeed of the web material during the winding operation.
Claim 6
Dependent Claim
23 words
A controller as claimed in claim 3 further comprising means indicating the extent of increase or decrease of input and output shaft speeds.
Claim 7
Dependent Claim
231 words
A controller as claimed in claim 3, said first and second signalling means operative to preclude the provision of electrical pulses when the rotation of the input and output shafts are within preselected and adjustable tolerances, the controller further comprising calibrated means for establishing the input and output shaft speed to obtain a preselected percentage of tension or overfeed of the web material during the winding operation, said first and second responsive means each including a selective cycle clutch-resettable timer moving during the cycle in response to rotation of the respective associated shafts, each of said timers having first and second limit switches positioned for automatic operation during the selected cycles so that the operation of the first timer first and second limit switches prior to the operation of the second timer first limit switch will initiate and transmit an electrical pulse to the electrically responsive means to increase the differential speed between the input and output shafts, the operation of the second timer first limit switch will initiate and transmit an electrical pulse to the electrically responsive means to decrease the differential speed between the input and output shafts and the closing of the second limit switch will disengage the first and second timer clutches and reset said timers simultaneously to commence new cycles; and means indicating the extent of the increase or decrease of input and Output shaft speeds.
Claim 8
Dependent Claim
48 words
A controller as claimed in claim 1, said first and second responsive means each including a selective cycle clutch-resettable timer moving during the cycle in response to rotation of the respective associated shafts having at least one limit switch operable at the termination of a selected timer cycle.
Claim 9
Dependent Claim
51 words
A controller as claimed in claim 7, each of said timers having first and second limit switches positioned for automatic operation during the selected cycles so that the operation of the first timer first and second limit switches prior to the second timer first limit switch will initiate an electrical pulse.
Claim 10
Dependent Claim
40 words
A controller as claimed in claim 8, wherein the operation of the second timer first limit switch initiates and transmits an electrical pulse to the electrically responsive means to decrease the differential rotational speed between the input and output shafts.
Claim 11
Dependent Claim
53 words
A controller as claimed in claim 8 wherein the operation of the first timer first and second limit switches prior to the operation of the second timer first limit switch initiates and transmits an electrical pulse to the electrically responsive means to increase the differential rotational speed between the input and output shafts.
Claim 12
Dependent Claim
33 words
A controller as claimed in claim 8 wherein the closing of the second timer second limit switch disengages the first and second timer clutches and resets said timers simultaneously to commence new cycles.
Claim 13
Dependent Claim
23 words
A controller as claimed in claim 8 further comprising means indicating the extent of increase or decrease of input and output shaft speeds.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |