GB1524853A - Tobacco density testing method and apparatus - Google Patents

Tobacco density testing method and apparatus

Info

Publication number
GB1524853A
GB1524853A GB3592775A GB3592775A GB1524853A GB 1524853 A GB1524853 A GB 1524853A GB 3592775 A GB3592775 A GB 3592775A GB 3592775 A GB3592775 A GB 3592775A GB 1524853 A GB1524853 A GB 1524853A
Authority
GB
United Kingdom
Prior art keywords
signal
input
amplifier
output
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3592775A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber AG
Original Assignee
Hauni Werke Koerber and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hauni Werke Koerber and Co KG filed Critical Hauni Werke Koerber and Co KG
Publication of GB1524853A publication Critical patent/GB1524853A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24CMACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/32Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • A24C5/3412Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by means of light, radiation or electrostatic fields

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

1524853 Measuring density electrically HAUNI-WERKE KÍRBER & CO KG 1 Sept 1975 [31 Aug 1974] 35927/75 Heading G1N In the capacitive checking of the density of tobacco in cigarettes &c., wherein a mean signal is formed dependent on the tobacco density and moisture content, a circuit is provided which substantially excludes signals from forming the mean value which are obtained from cigarettes having too low a density and forms a signal from the mean signal which does not have a component dependent on fluctuations in the moisture content of the tobacco. In the arrangement of Fig. 1 filter cigarettes 3 are conveyed one at a time by rotating conveyer 2 into a testing position where the cigarettes form part of the dielectric of a capacitor 24, 26 forming the frequency determining circuit of oscillator 27, the output of which is fed to input 'a' of differential amplifier 33. Initially potentiometer 41 is set so that a voltage is applied to input 'b' of amplifier 33 from generator 42 which corresponds to the voltage which would be obtained from circuit 23 corresponding to normal average tobacco moisture content. The cigarettes are then transferred to the holders 7 of conveyer 2 in which they are retained by suction. When an end Zo arrives between the electrodes of the capacitor a measurement signal is fed to the differential amplifier 33 and proximity detector 31 emits a pulse which shifts signals along in shift register 53 and is also applied to input 'b' of AND gate 57. If the two signals applied to amplifier 33 are different, a difference signal is applied to a sample and hold amplifier 34 and a comparator 51 where it is compared with a reference voltage from 52 corresponding to a too low tobacco density. If the density is too low a signal is produced at the output of 51 which is fed to the input of the shift register 53 whereby an electromagnetic valve 56 is energized and the cigarette ejected by compressed air. In addition the comparator 51 output is inverted at 58 and applied to input 'a' of gate 57 so as to disable this gate so that an enabling signal is not applied to sample and hold amplifier 34 to enable the difference signal to be applied to RC circuit 37. When the tobacco density is sufficient comparator 51 has no output signal and AND gate 5 7 is enabled thus allowing a difference signal representing changes in moisture content to be fed to the sample and hold amplifier 34 and thence to the RC circuit 37. If the moisture content decreases then a negative signal appears at the output of comparator 33 so that after several cigarettes have been tested each having a decrease in the moisture content thereof the RC mean value producing circuit 37 emits an increasing negative signal. If this is less than the reference voltage applied to comparator 44 then the latter provides an amplified signal which is fed to motor control member 39 which slowly adjusts potentiometer 41 to provide a lower output voltage at input 'b' of differentive amplifier 33 and so reduce the difference signal. Similarly if the moisture content increases then the motor 39 is operated by a signal from comparator 43 to increase the voltage applied amplifier 33. In an alternative arrangement Fig. 2 (not shown) the output signal from the oscillator 27 is applied via a switch and mean value forming circuit to the "numerator" input of a divider, to the "denominator" input of which is fed the signal from the oscillator. If the ratio from the divider output is greater than a predetermined level the reject mechanism is actuated and the switch opened so that no further signals may be applied to the mean value forming circuit.
GB3592775A 1974-08-31 1975-09-01 Tobacco density testing method and apparatus Expired GB1524853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742441832 DE2441832A1 (en) 1974-08-31 1974-08-31 PROCEDURE AND ARRANGEMENT FOR CAPACITIVE TESTING OF TOBACCO DENSITY IN THE ENDS OF ROD-SHAPED ARTICLES OF THE TOBACCO PROCESSING INDUSTRY

Publications (1)

Publication Number Publication Date
GB1524853A true GB1524853A (en) 1978-09-13

Family

ID=5924608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3592775A Expired GB1524853A (en) 1974-08-31 1975-09-01 Tobacco density testing method and apparatus

Country Status (5)

Country Link
JP (1) JPS5150757A (en)
BR (1) BR7505470A (en)
DE (1) DE2441832A1 (en)
FR (1) FR2282817A1 (en)
GB (1) GB1524853A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0095867A1 (en) * 1982-06-02 1983-12-07 Amf Incorporated Apparatus for the continuous measurement of bulk density material such as cut tobacco
GB2184241A (en) * 1985-10-25 1987-06-17 Drexelbrook Controls Remotely calibratable instrument system
US4849754A (en) * 1985-10-25 1989-07-18 Drexelbrook Controls Remotely calibratable instrument system
GB2218214A (en) * 1985-10-25 1989-11-08 Drexelbrook Controls Remotely calibratable instrument system
CN112021649A (en) * 2020-09-21 2020-12-04 四川中烟工业有限责任公司 Cigarette quality detection system and detection method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929155A1 (en) * 1989-09-02 1991-03-14 Reemtsma H F & Ph METHOD AND DEVICE FOR DETERMINING THE FILLABILITY OF TOBACCO AND THE HARDNESS OF CIGARETTES
DE102004063228B4 (en) * 2004-12-22 2007-06-28 Hauni Maschinenbau Ag Measuring device and method for determining a dielectric property, in particular the humidity and / or density, of a product
DE102004063229B4 (en) 2004-12-22 2007-06-14 Hauni Maschinenbau Ag Measuring device and method for detecting foreign bodies in a product, in particular in tobacco, cotton or another fiber product
DE102013217485B4 (en) 2013-09-03 2024-09-26 Körber Technologies Gmbh Arrangement and procedure for the inspection of rod-shaped articles of the tobacco processing industry

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744311A (en) * 1953-02-18 1956-02-01 Ind Machinery Co Ltd Improvements relating to the measurement of weight, density or mass per unit area of materials
US3155901A (en) * 1961-05-04 1964-11-03 Industrial Nucleonics Corp System for quantitatively measuring one property of dielectric material by applying input signals at two different frequencies to a capacitance probe and varying one input signal to maintain a constant ratio of output signals for the two frequencies
GB1115923A (en) * 1965-05-11 1968-06-06 Kurt Koerber Method and apparatus for testing the filling of the ends of tobacco articles
GB1309543A (en) * 1969-03-14 1973-03-14 Molins Machine Co Ltd Manufacture of cigarettes and other tobacco-filled rod-like articles
DE2165819A1 (en) * 1971-12-31 1973-07-19 Hauni Werke Koerber & Co Kg PROCEDURE AND ARRANGEMENT FOR MEASURING THE MOISTURE OF TOBACCO
IT1020003B (en) * 1973-08-30 1977-12-20 Hauni Werke Koerber & Co Kg DEVICE FOR CHECKING THE ENDS OF TOBACCO ARTICLES IN THE SHAPE OF STICKS, IN PARTICULAR CIGARETTES

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0095867A1 (en) * 1982-06-02 1983-12-07 Amf Incorporated Apparatus for the continuous measurement of bulk density material such as cut tobacco
GB2184241A (en) * 1985-10-25 1987-06-17 Drexelbrook Controls Remotely calibratable instrument system
US4723122A (en) * 1985-10-25 1988-02-02 Drexelbrook Controls, Inc. Remotely calibratable instrument system
US4849754A (en) * 1985-10-25 1989-07-18 Drexelbrook Controls Remotely calibratable instrument system
GB2218214A (en) * 1985-10-25 1989-11-08 Drexelbrook Controls Remotely calibratable instrument system
GB2184241B (en) * 1985-10-25 1990-06-13 Drexelbrook Controls Remotely calibratable instrument system
GB2218214B (en) * 1985-10-25 1990-07-04 Drexelbrook Controls Admittance-responsive instrument system
CN112021649A (en) * 2020-09-21 2020-12-04 四川中烟工业有限责任公司 Cigarette quality detection system and detection method

Also Published As

Publication number Publication date
FR2282817A1 (en) 1976-03-26
DE2441832A1 (en) 1976-03-11
FR2282817B1 (en) 1980-04-04
JPS5150757A (en) 1976-05-04
BR7505470A (en) 1976-08-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee