US3768122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed loop carding machine control
Assignee: General Electric Co
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Filing: 1972-01-17
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Granted: 1973-10-30
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Expires: 1992-01-17
Abstract
Abstract A closed loop fluidic control system for carding machines including a sliver sensor means for monitoring a parameter of the sliver passing therethrough, fluidic signal means connected to the sliver sensor means for producing pneumatic output signals indicating variations in the parameter of the sliver being monitored, control means connected to the fluidic signal means for receiving therefrom the pneumatic output signals produced thereby, actuator means operated by the control means in accord with the pneumatic output signals received by the latter, and means interconnecting the actuator means to the speed transmission drive of the carding machine whereby when the parameter of the sliver being monitored is of a first magnitude the actuator means effectuates a first change in the speed transmission drive means thereby reducing the speed of the carding machine and when the parameter of the sliver being monitored is of a second magnitude the actuator means effectuates a second change in the speed transmission drive means thereby increasing the speed of the carding machine.
Inventors
- 👤 W Rauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:27
CPC Classifications
D; D01; D01G; D01G23/00; D01G23/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
436 words
A closed loop fluidic control system having constant speed dElivery means for controlling the operation of variable speed feed means to produce therefrom strand-like material having a desired uniform character comprising: a. at least one pneumatic sensor means for monitoring a parameter of strand-like material passing therethrough; b. at least one fluidic signal means having a first and a second output port, said fluidic signal means being connected to said sensor means for producing a first pneumatic output signal from said first output port indicating a variation beyond a first predetermined value in a first direction in said parameter of said strand-like material, a second output signal from said second output port indicating a variation beyond a second predetermined value in a second direction in said parameter of said strand-like material, and no output signal from either of said first and second output ports for variations between said first and second predetermined values in said parameter of strand-like material; c. pneumatic control means including first and second low to high pressure three way valves each of said valves having an input port and an output port, the first input port of said first valve being connected to said first output port said fluidic signal means for receiving therefrom said first output signal produced by said fluidic signal means, the first input port of said second valve being connected to said second output port of said fluidic signal means for receiving therefrom said second output signal produced by said fluidic signal means; d. at least one pneumatic actuator means connected to the respective output ports of said first and second valves of said control means and operated by said control means in accord with the receipt by said control means of said first and second output signals from said fluidic signal means; and e. means interconnecting said actuator means to said variable speed feed means whereby when said strand-like material is sensed to have varied beyond said first predetermined value in said first direction said first output signal is produced by said fluidic signal means and transmitted to said control means to operate said actuator means to reduce the speed of said variable speed feed means to restore said strand-like material to said desired uniform character, and when said strand-like material is sensed to have varied beyond said second predetermined value in said second direction said second output signal is produced by said fluidic signal means and transmitted to said control means to operate said actuator means to increase the speed of said variable speed feed means to restore said strand-like material to said desired uniform character.
Claim 2
Dependent Claim
436 words
A closed loop fluidic control system having constant speed dElivery means for controlling the operation of variable speed feed means to produce therefrom strand-like material having a desired uniform character comprising: a. at least one pneumatic sensor means for monitoring a parameter of strand-like material passing therethrough; b. at least one fluidic signal means having a first and a second output port, said fluidic signal means being connected to said sensor means for producing a first pneumatic output signal from said first output port indicating a variation beyond a first predetermined value in a first direction in said parameter of said strand-like material, a second output signal from said second output port indicating a variation beyond a second predetermined value in a second direction in said parameter of said strand-like material, and no output signal from either of said first and second output ports for variations between said first and second predetermined values in said parameter of strand-like material; c. pneumatic control means including first and second low to high pressure three way valves each of said valves having an input port and an output port, the first input port of said first valve being connected to said first output port said fluidic signal means for receiving therefrom said first output signal produced by said fluidic signal means, the first input port of said second valve being connected to said second output port of said fluidic signal means for receiving therefrom said second output signal produced by said fluidic signal means; d. at least one pneumatic actuator means connected to the respective output ports of said first and second valves of said control means and operated by said control means in accord with the receipt by said control means of said first and second output signals from said fluidic signal means; and e. means interconnecting said actuator means to said variable speed feed means whereby when said strand-like material is sensed to have varied beyond said first predetermined value in said first direction said first output signal is produced by said fluidic signal means and transmitted to said control means to operate said actuator means to reduce the speed of said variable speed feed means to restore said strand-like material to said desired uniform character, and when said strand-like material is sensed to have varied beyond said second predetermined value in said second direction said second output signal is produced by said fluidic signal means and transmitted to said control means to operate said actuator means to increase the speed of said variable speed feed means to restore said strand-like material to said desired uniform character.
Claim 3
Dependent Claim
76 words
A closed loop fluidic control system as set forth in claim 1 further comprising: a. filter supply and regulator means for filtering and regulating the pressure of the fluid supplied to said sensor means, said fluid signal means, said control means, and said actuator means; and b. hydraulic snubber means connected to said actuator means, said hydraulic snubber means including settable velocity rate control means for allowing adjustment in system response to achieve a stable system.
Claim 4
Dependent Claim
57 words
A closed loop fluidic control system as set forth in claim 1 wherein: a. said fluidic signal means includes a first visual indicating means which is illuminated when said first pneumatic output signal is produced; b. said fluidic signal means includes a second visual indicating means which is illuminated when said second pneumatic output signal is produced.
Claim 5
Dependent Claim
38 words
A closed loop fluidic control system as set forth in claim 1 wherein said actuator means includes a cylinder and a member having one end thereof within said cylinder and another end thereof extending outwardly from said cylinder.
Claim 6
Dependent Claim
97 words
A closed loop fluidic control system as set forth in claim 4, wherein said interconnecting means includes a first lever having one of two ends connected to said other end of said member, a second lever connected to the seconD end of said first lever and having first and second ends, means for fixing the first end of said second lever, and an idler pulley connected to the second end of said second lever for coacting with and changing the speed of said variable speed feed means to restore said strand-like material to said desired uniform character.
Claim 7
Dependent Claim
314 words
A closed loop fluidic control system having constant speed delivery means for controlling the operation of variable speed feed means to produce therefrom a strand-like material having a uniform character comprising: a. at least one sensor means for monitoring a parameter of the material passing therethrough; b. at least one fluidic signal means connected to said sensor means for producing at least one pneumatic output signal indicating a variation in said parameter of the material; c. at least one pneumatic control means connected to said fluidic signal means for receiving therefrom said pneumatic output signal produced by said fluidic signal means; d. at least one pneumatic actuator means connected to said pneumatic control means and operated by said pneumatic control means in accord with the receipt by said pneumatic control means of said pneumatic output signal from said fluidic signal means, said actuator means including an enclosure and a member having one end thereof within said enclosure and another end thereof extending outwardly from said enclosure; and e. means interconnecting said pneumatic actuator means to said variable speed feed means, said interconnecting means including a first lever having one of two ends connected to said other end of said member, a second lever connected to the second end of said first lever and having first and second ends, means for fixing the first end of said second lever, and an idler pulley connected to the second end of said second lever for coacting with said variable speed feed means whereby when the material is sensed to have varied from said parameter and pneumatic output signal is produced by said fluidic signal means and transmitted to said pneumatic control means to operate said member of said pneumatic actuator means to cause said idler pulley to effectuate a change in the speed of said variable speed feed means to restore the material to said uniform character.
Claim 8
Dependent Claim
314 words
A closed loop fluidic control system having constant speed delivery means for controlling the operation of variable speed feed means to produce therefrom a strand-like material having a uniform character comprising: a. at least one sensor means for monitoring a parameter of the material passing therethrough; b. at least one fluidic signal means connected to said sensor means for producing at least one pneumatic output signal indicating a variation in said parameter of the material; c. at least one pneumatic control means connected to said fluidic signal means for receiving therefrom said pneumatic output signal produced by said fluidic signal means; d. at least one pneumatic actuator means connected to said pneumatic control means and operated by said pneumatic control means in accord with the receipt by said pneumatic control means of said pneumatic output signal from said fluidic signal means, said actuator means including an enclosure and a member having one end thereof within said enclosure and another end thereof extending outwardly from said enclosure; and e. means interconnecting said pneumatic actuator means to said variable speed feed means, said interconnecting means including a first lever having one of two ends connected to said other end of said member, a second lever connected to the second end of said first lever and having first and second ends, means for fixing the first end of said second lever, and an idler pulley connected to the second end of said second lever for coacting with said variable speed feed means whereby when the material is sensed to have varied from said parameter and pneumatic output signal is produced by said fluidic signal means and transmitted to said pneumatic control means to operate said member of said pneumatic actuator means to cause said idler pulley to effectuate a change in the speed of said variable speed feed means to restore the material to said uniform character.
Claim 9
Dependent Claim
83 words
A closed loop fluidic control system as set forth in claim 6 wherein: a. said pneumatic output signal produced by said fluidic signal means is a digital signal; b. said pneumatic control means includes a first low to high pressure three-way valve and a second low to high pressure three-way valve, each of said first and second low to high pressure three-way valves having an output port connected to said pneumatic actuator means; and c. said pneumatic actuator means includes an air cylinder.
Claim 10
Dependent Claim
79 words
A closed loop fluidic control system as set forth in claim 7, further comprising: a. filter supply and regulator means for filtering and regulating the pressure of the fluid supplied to said sensor means, said fluid signal means, said pneumatic control means and said pneumatic actuator means; and b. hydraulic snubber means connected to said pneumatic actuator means, said hydraulic snubber means including settable velocity rate control means for allowing adjustment in system response to achieve a stable system.
References Cited (Backward Citations)
US3088175A
Cited
US3644964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |