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US3604429A
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Cigarette-dense-end-measuring method and apparatus
Assignee: Industrial Nucleonics Corp
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Filing: 1969-10-03
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Granted: 1971-09-14
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Expires: 1989-10-03
Abstract
Abstract The location of dense tobacco regions relative to the ends of cut cigarettes is determined by a density gauge positioned adjacent to a moving tobacco rod prior to cutting in a cigarette making machine and located therein by means of a signal from the density gauge which is divided by an electronic gating circuit into two components, one representative of the density of that portion of the rod that will provide the ends of the cut cigarettes and the other representative of that portion of the rod that will lie intermediate the ends. The signal components are averaged and an output signal proportional to their difference is obtained to indicate correct synchronization of the cigarette cutter with the dense end device. Pulses from the cutter may be presented simultaneously on a dual channel oscilloscope with the density signal to visually indicate an outof-phase condition. Alternately, an out-of-phase condition may be indicated on a meter arranged in parallel with an alarm.
Inventors
- 👤 John E De Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:27
CPC Classifications
A; A24; A24C; A24C5/00; A24C5/32; A24C5/34; A24C5/3412; A24C5/14; A24C5/28; Y; Y10; Y10S; Y10S131/00; Y10S131/905; Y10S131/906; Y10T; Y10T83/00; Y10T83/141
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
168 words
The method of monitoring the operation of a machine for producing cigarettes having dense ends, said machine having means for forming a continuous tobacco rod containing extra tobacco in locally dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, said method comprising the steps of: measuring the density of said rod as it passes a point along said path to produce a first signal having a recurrent dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, generating a recurrent reference signal in response to the operation of said cutter, and comparing the phase of said reference signal with the phase of one of said first signal portions to provide a quantitative indication of the distance along the rod between the position of said dense regions and the ends of the cut cigarettes.
Claim 2
Independent Claim
168 words
The method of monitoring the operation of a machine for producing cigarettes having dense ends, said machine having means for forming a continuous tobacco rod containing extra tobacco in locally dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, said method comprising the steps of: measuring the density of said rod as it passes a point along said path to produce a first signal having a recurrent dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, generating a recurrent reference signal in response to the operation of said cutter, and comparing the phase of said reference signal with the phase of one of said first signal portions to provide a quantitative indication of the distance along the rod between the position of said dense regions and the ends of the cut cigarettes.
Claim 3
Independent Claim
198 words
The method of monitoring the operation of a machine for producing cigarettes having dense ends, said machine having means for forming a continuous tobacco rod having locally relatively dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, said method comprising the steps of: measuring the density of said rod at fixed location along said path before the rod is cut by said cutter to produce a first signal having a recurrent dense region indicating signal portion responsive to the passage of said dense regions and another signal portion responsive to the passing of other regions in said tobacco rod, delaying said first signal to provide a measure of the density of said tobacco rod occurring at said cutter when said rod is cut, generating a recurrent reference signal in response to the operation of said cutter, and comparing the phase of said reference signal with the phase of one of said first signal portions in said delayed first signal to indicate the position of said dense regions relative to the ends of said cut cigarettes.
Claim 4
Independent Claim
198 words
The method of monitoring the operation of a machine for producing cigarettes having dense ends, said machine having means for forming a continuous tobacco rod having locally relatively dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, said method comprising the steps of: measuring the density of said rod at fixed location along said path before the rod is cut by said cutter to produce a first signal having a recurrent dense region indicating signal portion responsive to the passage of said dense regions and another signal portion responsive to the passing of other regions in said tobacco rod, delaying said first signal to provide a measure of the density of said tobacco rod occurring at said cutter when said rod is cut, generating a recurrent reference signal in response to the operation of said cutter, and comparing the phase of said reference signal with the phase of one of said first signal portions in said delayed first signal to indicate the position of said dense regions relative to the ends of said cut cigarettes.
Claim 5
Independent Claim
102 words
The method of monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said tobacco rod, said method comprising the steps of: continuously measuring the density of said tobacco rod occurring in advance of said cutter, generating a signal whenever said cutter cuts through said tobacco rod, and displaying said density measurement and said generated signal to visually determine the position along the rod of each of said locally dense regions relative to the ends of said cut ciGarettes.
Claim 6
Independent Claim
102 words
The method of monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said tobacco rod, said method comprising the steps of: continuously measuring the density of said tobacco rod occurring in advance of said cutter, generating a signal whenever said cutter cuts through said tobacco rod, and displaying said density measurement and said generated signal to visually determine the position along the rod of each of said locally dense regions relative to the ends of said cut ciGarettes.
Claim 7
Independent Claim
121 words
The method of monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod moving relative to said cutter and having locally dense regions spaced along said cigarette rod by a dense end device, said method comprising the steps of: continuously measuring the density of said cigarette rod, partitioning said continuous density measurement into a first component representing the density of the segments of said cigarette rod which will form the ends of said cut cigarettes and a second component representing the density of the remainder of said cigarette rod, and comparing said first density component with said second density component to determine when said end segments include said locally dense regions.
Claim 8
Independent Claim
121 words
The method of monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod moving relative to said cutter and having locally dense regions spaced along said cigarette rod by a dense end device, said method comprising the steps of: continuously measuring the density of said cigarette rod, partitioning said continuous density measurement into a first component representing the density of the segments of said cigarette rod which will form the ends of said cut cigarettes and a second component representing the density of the remainder of said cigarette rod, and comparing said first density component with said second density component to determine when said end segments include said locally dense regions.
Claim 9
Dependent Claim
54 words
The method of claim 4 which further includes the step of: adjusting the relative position of said cutter and said dense end device to maximize the magnitude of said first density component so that each of said locally dense regions of said cigarette rod is included in the butted ends of two adjacent cigarettes.
Claim 10
Independent Claim
144 words
The method of synchronizing the operation of the cutting mechanism and the dense-end-forming means of a cigarette-making machine providing a plurality of cigarettes cut from a continuous cigarette rod moving relative to said cutter mechanism and having locally dense regions spaced along said cigarette rod, said method comprising the steps of: measuring the density of said cigarette rod before it is cut by said cutting mechanism, selecting portions of said density measurement at time intervals synchronized with said cutting mechanism, averaging said selected portions to obtain a first signal, averaging other portions of said density measurement to obtain a second signal, comparing said first signal with said second signal to obtain a difference signal, and producing an indication in response to said difference signal that said cutting mechanism is cutting said cigarette rod substantially in the center of each of said locally dense regions.
Claim 11
Independent Claim
144 words
The method of synchronizing the operation of the cutting mechanism and the dense-end-forming means of a cigarette-making machine providing a plurality of cigarettes cut from a continuous cigarette rod moving relative to said cutter mechanism and having locally dense regions spaced along said cigarette rod, said method comprising the steps of: measuring the density of said cigarette rod before it is cut by said cutting mechanism, selecting portions of said density measurement at time intervals synchronized with said cutting mechanism, averaging said selected portions to obtain a first signal, averaging other portions of said density measurement to obtain a second signal, comparing said first signal with said second signal to obtain a difference signal, and producing an indication in response to said difference signal that said cutting mechanism is cutting said cigarette rod substantially in the center of each of said locally dense regions.
Claim 12
Independent Claim
163 words
The method of synchronizing the operation of the cutting mechanism and the dense-end-forming means of a cigarette-making machine providing a plurality of cigarettes from a continuous rod moving relative to said cutting mechanism and having locally dense regions substantially equally spaced along said cigarette rod by said dense end forming means, said method comprising the steps of: measuring the density of said cigarette rod at an inspection station, selecting portions of said density measurement at time intervals synchronized with said cutting mechanism, averaging said selected density measurement portions to obtain a first signal, averaging the remaining portions of said density measurement occurring at other time intervals to obtain a second signal, comparing said first signal with said second signal to obtain a difference signal, and adjusting the relative positions of said cutting mechanism and said dense end former to maximize said difference signal and provide cigarettes having a portion of said locally dense regions located at each end of each of said cigarettes.
Claim 13
Independent Claim
163 words
The method of synchronizing the operation of the cutting mechanism and the dense-end-forming means of a cigarette-making machine providing a plurality of cigarettes from a continuous rod moving relative to said cutting mechanism and having locally dense regions substantially equally spaced along said cigarette rod by said dense end forming means, said method comprising the steps of: measuring the density of said cigarette rod at an inspection station, selecting portions of said density measurement at time intervals synchronized with said cutting mechanism, averaging said selected density measurement portions to obtain a first signal, averaging the remaining portions of said density measurement occurring at other time intervals to obtain a second signal, comparing said first signal with said second signal to obtain a difference signal, and adjusting the relative positions of said cutting mechanism and said dense end former to maximize said difference signal and provide cigarettes having a portion of said locally dense regions located at each end of each of said cigarettes.
Claim 14
Dependent Claim
93 words
Apparatus for synchronizing a cutting mechanism and a dense-end-forming means in a cigarette-making machine providing a continuous traveling rod having locally dense regions spaced along the length thereof, said apparatus comprising: means for continuously measuring the density of said cigarette rod upstream from said cutter, means for generating a signal having a pulse whenever said cutter cuts through said cigarette rod, and means for receiving and simultaneously displaying said density measurement and said generated pulse to visually indicate the position of said locally dense regions relative to the ends of said cut cigarettes.
Claim 15
Dependent Claim
93 words
Apparatus for synchronizing a cutting mechanism and a dense-end-forming means in a cigarette-making machine providing a continuous traveling rod having locally dense regions spaced along the length thereof, said apparatus comprising: means for continuously measuring the density of said cigarette rod upstream from said cutter, means for generating a signal having a pulse whenever said cutter cuts through said cigarette rod, and means for receiving and simultaneously displaying said density measurement and said generated pulse to visually indicate the position of said locally dense regions relative to the ends of said cut cigarettes.
Claim 16
Dependent Claim
118 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod moving relative to said cutter and having locally dense regions spaced along said tobacco rod, said apparatus comprising: means for continuously measuring the density of said cigarette rod, means for partitioning said continuous density measurement into a first component representing the density of the segments of said cigarette rod which will form the ends of said cut cigarettes and a second component representing the density of another part of said cigarette rod, and means for comparing said first density component with said second density component to determine when said end segments include said locally dense regions.
Claim 17
Dependent Claim
118 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod moving relative to said cutter and having locally dense regions spaced along said tobacco rod, said apparatus comprising: means for continuously measuring the density of said cigarette rod, means for partitioning said continuous density measurement into a first component representing the density of the segments of said cigarette rod which will form the ends of said cut cigarettes and a second component representing the density of another part of said cigarette rod, and means for comparing said first density component with said second density component to determine when said end segments include said locally dense regions.
Claim 18
Dependent Claim
108 words
Apparatus for a cigarette-making machine providing a continuous traveling rod having locally dense regions spaced along the length thereof and including a cutter for cutting individual cigarettes from said traveling rod, said apparatus comprising: means for measuring the average density of said cigarette rod in the regions thereof where the rod is to be cut by said cutter, means for measuring the average density of other regions of said cigarette rod, means for comparing said average density measurements to obtain a difference signal, and means for utilizing said difference signal to indicate when said cutter is cutting substantially in the center of each of said locally dense regions.
Claim 19
Dependent Claim
108 words
Apparatus for a cigarette-making machine providing a continuous traveling rod having locally dense regions spaced along the length thereof and including a cutter for cutting individual cigarettes from said traveling rod, said apparatus comprising: means for measuring the average density of said cigarette rod in the regions thereof where the rod is to be cut by said cutter, means for measuring the average density of other regions of said cigarette rod, means for comparing said average density measurements to obtain a difference signal, and means for utilizing said difference signal to indicate when said cutter is cutting substantially in the center of each of said locally dense regions.
Claim 20
Dependent Claim
117 words
Apparatus for a cigarette-making machine providing a continuous traveling rod having locally dense regions spaced along the length thereof and including a cutter for cutting individual cigarettes from said traveling rod, said apparatus comprising: means for continuously measuring the density of said continuous cigarette rod in the vicinity of said cutter mechanism and developing a signal in response thereto, means for generating a signal having a pulse substantially at the same time said cutter passes through said cigarette rod, and means for graphically displaying said density signal and said cutter pulse signal simultaneously to determine the phase relationship between said cutter operation and the occurrence of said locally dense regions of said cigarette rod at said cutter.
Claim 21
Dependent Claim
117 words
Apparatus for a cigarette-making machine providing a continuous traveling rod having locally dense regions spaced along the length thereof and including a cutter for cutting individual cigarettes from said traveling rod, said apparatus comprising: means for continuously measuring the density of said continuous cigarette rod in the vicinity of said cutter mechanism and developing a signal in response thereto, means for generating a signal having a pulse substantially at the same time said cutter passes through said cigarette rod, and means for graphically displaying said density signal and said cutter pulse signal simultaneously to determine the phase relationship between said cutter operation and the occurrence of said locally dense regions of said cigarette rod at said cutter.
Claim 22
Dependent Claim
186 words
Apparatus for synchronizing the operation of the cutter of the knife mechanism of a cigarette-making machine and a dense end former providing a plurality of cigarettes cut from a continuous traveling rod having locally dense regions spaced along said rod by said rotating dense end former, said apparatus comprising: a radiation gauge for measuring the density of the rod and for providing an output signal proportional thereto in the vicinity of said cutter, gate means actuated by said knife mechanism for partitioning said output signal including a first gate passing for a fixed period of time a portion of said output signal representative of the density of said cigarette rod in the vicinity of said cutter and a second gate passing the remaining portion of said radiation gauge output signal, signal-averaging means for averaging the value of each of said signals passed by said first and second gate, means providing a third signal proportional to the difference between said averaged gate signals, and means responsive to said third signal for indicating the position of said locally dense regions relative to the ends of said cut cigarettes.
Claim 23
Dependent Claim
186 words
Apparatus for synchronizing the operation of the cutter of the knife mechanism of a cigarette-making machine and a dense end former providing a plurality of cigarettes cut from a continuous traveling rod having locally dense regions spaced along said rod by said rotating dense end former, said apparatus comprising: a radiation gauge for measuring the density of the rod and for providing an output signal proportional thereto in the vicinity of said cutter, gate means actuated by said knife mechanism for partitioning said output signal including a first gate passing for a fixed period of time a portion of said output signal representative of the density of said cigarette rod in the vicinity of said cutter and a second gate passing the remaining portion of said radiation gauge output signal, signal-averaging means for averaging the value of each of said signals passed by said first and second gate, means providing a third signal proportional to the difference between said averaged gate signals, and means responsive to said third signal for indicating the position of said locally dense regions relative to the ends of said cut cigarettes.
Claim 24
Dependent Claim
38 words
Apparatus as set forth in claim 12, in which said means responsive to said third signal includes: an alarm, and means for energizing said alarm whenever the magnitude of said difference signal falls below a predetermined minimum level.
Claim 25
Dependent Claim
164 words
Apparatus for monitoring the operation of a machine for producing cigarettes having dense ends, said machine having means for forming a continuous tobacco rod having locally relatively dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, said apparatus compriSing: means for measuring the density of said rod as it passes a point along said path to produce a first signal having a recurrent dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, means for generating a recurrent reference signal in response to the operation of said cutter, and means for comparing the phase of said reference signal with the phase of one of said first signal portions to provide a quantitative indication of the distance between the position of said dense regions and the ends of the cigarettes.
Claim 26
Dependent Claim
164 words
Apparatus for monitoring the operation of a machine for producing cigarettes having dense ends, said machine having means for forming a continuous tobacco rod having locally relatively dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, said apparatus compriSing: means for measuring the density of said rod as it passes a point along said path to produce a first signal having a recurrent dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, means for generating a recurrent reference signal in response to the operation of said cutter, and means for comparing the phase of said reference signal with the phase of one of said first signal portions to provide a quantitative indication of the distance between the position of said dense regions and the ends of the cigarettes.
Claim 27
Independent Claim
155 words
A method for controlling a machine for producing cigarettes having dense ends, said machine having means including a dense end device for forming a continuous tobacco rod having locally relatively dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, comprising the steps of: measuring the density of said rod as it passes a point along said path to produce a first signal having a recurrent dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, generating a recurrent reference signal in response to the operation of said cutter, and adjusting the relative speed of operation of said dense end device and said cutter in response to the relative phases of said reference signal and one of said first signal portions.
Claim 28
Independent Claim
155 words
A method for controlling a machine for producing cigarettes having dense ends, said machine having means including a dense end device for forming a continuous tobacco rod having locally relatively dense regions uniformly spaced along its length and means for conveying said rod along a path including the location of a cutter for providing a plurality of cigarettes cut from said rod, comprising the steps of: measuring the density of said rod as it passes a point along said path to produce a first signal having a recurrent dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, generating a recurrent reference signal in response to the operation of said cutter, and adjusting the relative speed of operation of said dense end device and said cutter in response to the relative phases of said reference signal and one of said first signal portions.
Claim 29
Dependent Claim
141 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said tobacco rod by a dense end device, said apparatus comprising: means responsive to the density of said tobacco rod as it moves toward said cutter for producing a signal having a dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, means for measuring the phase relationship between the operation of said cutter to cut said rod and the occurrence of said dense region indicating signal portions to provide a signal which is a function of the deviation of the position of said dense regions from the ends of said cut cigarettes.
Claim 30
Dependent Claim
141 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said tobacco rod by a dense end device, said apparatus comprising: means responsive to the density of said tobacco rod as it moves toward said cutter for producing a signal having a dense region indicating signal portion responsive to said dense regions and another signal portion responsive to other regions in said tobacco rod, means for measuring the phase relationship between the operation of said cutter to cut said rod and the occurrence of said dense region indicating signal portions to provide a signal which is a function of the deviation of the position of said dense regions from the ends of said cut cigarettes.
Claim 31
Dependent Claim
109 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod moving relative to said cutter and having locally dense regions spaced along said tobacco rod by a dense end device, said apparatus comprising: means for generating a first signal whenever one of said dense regions should occur at said cutter, means for generating a second signal whenever said cutter cuts a cigarette from said rod, and means for continuously comparing the phase of said first signal relative to said second signal to determine the relative degree of synchronization between said cutter and said dense regions occurring thereat.
Claim 32
Dependent Claim
109 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod moving relative to said cutter and having locally dense regions spaced along said tobacco rod by a dense end device, said apparatus comprising: means for generating a first signal whenever one of said dense regions should occur at said cutter, means for generating a second signal whenever said cutter cuts a cigarette from said rod, and means for continuously comparing the phase of said first signal relative to said second signal to determine the relative degree of synchronization between said cutter and said dense regions occurring thereat.
Claim 33
Dependent Claim
141 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said tobacco rod by a dense end device, said apparatus comprising: means for continuously measuring the density of said cigarette rod to provide a signal having a periodic increased portions corresponding to said dense regions of said rod as they should occur at said cutter, means coupled to said cutter to provide a reference pulse whenever a cigarette is cut from said cigarette rod, phase detector means for measuring a phase difference of said measured increased density portions from said reference pulses, and means for utilizing said measured phase difference to indicate a deviation of saId dense regions from the ends of said cut cigarettes.
Claim 34
Dependent Claim
141 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said tobacco rod by a dense end device, said apparatus comprising: means for continuously measuring the density of said cigarette rod to provide a signal having a periodic increased portions corresponding to said dense regions of said rod as they should occur at said cutter, means coupled to said cutter to provide a reference pulse whenever a cigarette is cut from said cigarette rod, phase detector means for measuring a phase difference of said measured increased density portions from said reference pulses, and means for utilizing said measured phase difference to indicate a deviation of saId dense regions from the ends of said cut cigarettes.
Claim 35
Dependent Claim
101 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said rod, said apparatus comprising: means for continuously measuring the density of said tobacco rod to produce a density signal, means responsive to the operation of said cutter as it cuts said rod for producing a second signal, and means for displaying said measured density signal and said second signal to indicate the position of said dense regions relative to the ends of said cigarettes.
Claim 36
Dependent Claim
101 words
Apparatus for monitoring the operation of a cigarette-making machine having a cutter providing a plurality of cigarettes cut from a continuous rod of tobacco moving relative to said cutter and having locally dense regions spaced along said rod, said apparatus comprising: means for continuously measuring the density of said tobacco rod to produce a density signal, means responsive to the operation of said cutter as it cuts said rod for producing a second signal, and means for displaying said measured density signal and said second signal to indicate the position of said dense regions relative to the ends of said cigarettes.
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USPTO Annuity & Maintenance Windows
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|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |