GB1376747A - Monitoring devices - Google Patents

Monitoring devices

Info

Publication number
GB1376747A
GB1376747A GB449571A GB449571A GB1376747A GB 1376747 A GB1376747 A GB 1376747A GB 449571 A GB449571 A GB 449571A GB 449571 A GB449571 A GB 449571A GB 1376747 A GB1376747 A GB 1376747A
Authority
GB
United Kingdom
Prior art keywords
amplifiers
tobacco
outputs
source
detectors
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
GB449571A
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.)
Mpac Group PLC
Original Assignee
Molins Ltd
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 Molins Ltd filed Critical Molins Ltd
Priority to GB449571A priority Critical patent/GB1376747A/en
Priority to US00224798A priority patent/US3783373A/en
Priority to DE2206656A priority patent/DE2206656C3/en
Publication of GB1376747A publication Critical patent/GB1376747A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • A24C5/3412—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by means of light, radiation or electrostatic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/04—Investigating moisture content

Abstract

1376747 Electrical monitoring systems MOLINS Ltd 8 Feb 1972 [11 Feb 1971] 4495/71 Heading G1N The mass per unit length of a rod of material, e.g. a rod of tobacco in a cigarette making machine, is monitored by passing the rod through a waveguide section between a micro-wave source and a detector, the waveguide section being of such narrow cross-section that the radiation is propagated therethrough in the evanescent mode. As shown, two similar waveguides 4, 5, each having apertures 13, 14 therethrough, are provided, the radiation through each being provided from a single source I via a directional coupler 2. Tobacco passes through one only of these apertures. Two detectors 6, 7, each having diodes 8, 9, are provided, their outputs being applied to respective amplifiers 10, 11. The source preferably includes means for modulating the micro-wave output, thereby allowing the amplifiers 10, 11 to be A.C. amplifiers. Diodes or other detectors may be provided at the amplifier outputs to provide D.C. voltages which are subtracted at 16 to provide a single signal representing the density. Since tobacco normally contains moisture which affects the results obtained by the device described above, in the device shown in Fig. 2 there is provided a further waveguide 123 having a separate micro-wave source 121, of different frequency to the source 101, connected to a "magic- T" junction 122, and intersecting the waveguides 104, 105 at the apertures. Two detectors 124, 125 are provided, their outputs being applied to respective amplifiers 126, 127. Amplifiers 110, 111, 126, 127 are connected to respective filters 112, 113, 128, 129, the outputs of 110, 111 being compared at 114 and of 128, 129 at 130. The two equations, having as unknowns the volume of water and the volume of tobacco, are solved in a device 131.
GB449571A 1971-02-11 1971-02-11 Monitoring devices Expired GB1376747A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB449571A GB1376747A (en) 1971-02-11 1971-02-11 Monitoring devices
US00224798A US3783373A (en) 1971-02-11 1972-02-08 Apparatus for measuring density and moisture
DE2206656A DE2206656C3 (en) 1971-02-11 1972-02-11 Apparatus for monitoring the density of a continuous rod of tobacco

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB449571A GB1376747A (en) 1971-02-11 1971-02-11 Monitoring devices

Publications (1)

Publication Number Publication Date
GB1376747A true GB1376747A (en) 1974-12-11

Family

ID=9778262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB449571A Expired GB1376747A (en) 1971-02-11 1971-02-11 Monitoring devices

Country Status (3)

Country Link
US (1) US3783373A (en)
DE (1) DE2206656C3 (en)
GB (1) GB1376747A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040805A1 (en) * 1980-05-23 1981-12-02 Philip Morris Incorporated Method of measuring the moisture content of a material
US4522214A (en) * 1980-01-14 1985-06-11 Philip Morris Incorporated Method and apparatus for controlling a cigarette maker to produce a cigarette rod with predetermined moisture content
WO1991002966A1 (en) * 1989-08-15 1991-03-07 Commonwealth Scientific And Industrial Research Organisation Moisture content by microwave phase shift and mass/area
EP0500478A1 (en) * 1991-02-20 1992-08-26 ENTREMONT S.A. Société dite: Method and device for cutting a food product, in particular cheese, into slices of constant mass
US5333493A (en) * 1989-08-15 1994-08-02 Commonwealth Scientific And Industrial Research Organisation Moisture content by microwave phase shift and mass/area
EP0656180A2 (en) * 1993-12-03 1995-06-07 G.D Societa' Per Azioni Method and device for determining the density of a stream of fibrous material on a cigarette manufacturing machine
EP1321049A1 (en) * 2001-12-20 2003-06-25 TEWS ELEKTRONIK Dipl.-Ing. Manfred Tews Method and device for measuring the moisture of cigarettes before packing them
US20160120213A1 (en) * 2014-10-31 2016-05-05 R. J. Reynolds Tobacco Company Tobacco product component recovery system
EP2848133B1 (en) 2013-07-16 2018-05-30 Hauni Maschinenbau GmbH Assembly and method for checking rod-shaped articles from the tobacco processing industry
CN108225222A (en) * 2018-01-17 2018-06-29 河南中烟工业有限责任公司 A kind of microwave type cigarette filter lengths measuring method
EP2873334B1 (en) * 2013-11-19 2019-01-30 Hauni Maschinenbau GmbH Method and apparatus for detecting strand inhomogeneity of a rod of material in the tobacco processing industry
US11033049B2 (en) 2018-08-01 2021-06-15 R.J. Reynolds Tobacco Company Apparatus for recovering tobacco material and related method

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866118A (en) * 1973-11-08 1975-02-11 Rca Corp Microwave spectrometer
US4707652A (en) * 1983-11-30 1987-11-17 Philip Morris Incorporated Impurity detector measuring parallel polarized scattered electromagnetic radiation
US5736864A (en) * 1995-07-14 1998-04-07 Hauni Maschinenbau Ag Apparatus for ascertaining the complex dielectric constant of tobacco
US5698986A (en) * 1996-02-12 1997-12-16 Allen-Bradley Company, Inc. Cigarette density monitor
EP0791823A3 (en) * 1996-02-20 1997-12-10 Hauni Maschinenbau Aktiengesellschaft Method and device for measuring at least one property of a substance
US6290644B1 (en) 1996-02-20 2001-09-18 Cardiothoracic Systems, Inc. Surgical instruments and procedures for stabilizing a localized portion of a beating heart
US6163158A (en) 1996-02-20 2000-12-19 Hauni Maschinenbau Ag Method of and apparatus for ascertaining at least one characteristic of a substance
EP0902277A1 (en) * 1997-08-13 1999-03-17 Hauni Maschinenbau Aktiengesellschaft Method and apparatus for the determination of at least one property of a product
DE19825592A1 (en) * 1998-06-09 1999-12-16 Focke & Co Method and device for determining the density of tobacco
WO2000066008A1 (en) * 1999-05-04 2000-11-09 Cardiothoracic Systems, Inc. Surgical instruments for accessing and stabilizing a localized portion of a beating heart
RU2298197C2 (en) * 2001-05-31 2007-04-27 Интелскан Орбилгютэкни Ехф. Device and method of measuring of at least one physical parameter of material by means of microwaves
FR2849201B1 (en) * 2002-12-18 2005-04-08 Tabacs & Allumettes Ind SAMPLE HOLDER FOR MEASURING DRAWING AND MOISTURE OF POROUS OBJECTS
US20050148824A1 (en) * 2003-12-30 2005-07-07 Morejohn Dwight P. Transabdominal surgery system
US8927913B2 (en) * 2008-06-30 2015-01-06 The Invention Science Fund I, Llc Microwave processing systems and methods
US20090321428A1 (en) * 2008-06-30 2009-12-31 Hyde Roderick A Microwave oven
US8610038B2 (en) * 2008-06-30 2013-12-17 The Invention Science Fund I, Llc Microwave oven
US20090321429A1 (en) * 2008-06-30 2009-12-31 Hyde Roderick A Microwave oven
DE102008032835A1 (en) 2008-07-14 2010-01-21 Hauni Maschinenbau Ag Method and device for measuring the loading of a strand of the tobacco processing industry with a substance amount
EP3187119B1 (en) 2010-06-14 2020-07-15 Maquet Cardiovascular LLC Surgical organ stabilizer instruments
EP2618634A1 (en) * 2012-01-23 2013-07-24 Whirlpool Corporation Microwave heating apparatus
CN105424727B (en) * 2014-09-12 2019-12-24 航天信息股份有限公司 Method and device for online testing whether grain moisture content exceeds standard by utilizing microwave
CN113418441A (en) * 2021-04-30 2021-09-21 河南中烟工业有限责任公司 Microwave method for detecting length of cigarette segment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA656110A (en) * 1963-01-15 J. Justus Edgar Microwave measurement of moisture
US2532817A (en) * 1949-12-30 1950-12-05 Gen Electric Apparatus for analyzing fluids by microwave absorption
US3034046A (en) * 1959-10-12 1962-05-08 Sasaki Shinichi Automatic moisture content determination and control apparatus
US3060421A (en) * 1960-09-22 1962-10-23 Allis Chalmers Mfg Co Microwave gauge
US3265873A (en) * 1961-10-10 1966-08-09 George K Mckenzie System for monitoring and control of material in a continuing process
US3115131A (en) * 1961-10-16 1963-12-24 Reuben H Holliday Microwave absorption measurement
US3265967A (en) * 1965-06-08 1966-08-09 Mark A Heald Microwave plasma density measurement system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522214A (en) * 1980-01-14 1985-06-11 Philip Morris Incorporated Method and apparatus for controlling a cigarette maker to produce a cigarette rod with predetermined moisture content
EP0040805A1 (en) * 1980-05-23 1981-12-02 Philip Morris Incorporated Method of measuring the moisture content of a material
WO1991002966A1 (en) * 1989-08-15 1991-03-07 Commonwealth Scientific And Industrial Research Organisation Moisture content by microwave phase shift and mass/area
US5333493A (en) * 1989-08-15 1994-08-02 Commonwealth Scientific And Industrial Research Organisation Moisture content by microwave phase shift and mass/area
EP0500478A1 (en) * 1991-02-20 1992-08-26 ENTREMONT S.A. Société dite: Method and device for cutting a food product, in particular cheese, into slices of constant mass
EP0656180A3 (en) * 1993-12-03 1996-07-24 Gd Spa Method and device for determining the density of a stream of fibrous material on a cigarette manufacturing machine.
EP0656180A2 (en) * 1993-12-03 1995-06-07 G.D Societa' Per Azioni Method and device for determining the density of a stream of fibrous material on a cigarette manufacturing machine
EP1321049A1 (en) * 2001-12-20 2003-06-25 TEWS ELEKTRONIK Dipl.-Ing. Manfred Tews Method and device for measuring the moisture of cigarettes before packing them
EP2848133B1 (en) 2013-07-16 2018-05-30 Hauni Maschinenbau GmbH Assembly and method for checking rod-shaped articles from the tobacco processing industry
EP2873334B1 (en) * 2013-11-19 2019-01-30 Hauni Maschinenbau GmbH Method and apparatus for detecting strand inhomogeneity of a rod of material in the tobacco processing industry
US20160120213A1 (en) * 2014-10-31 2016-05-05 R. J. Reynolds Tobacco Company Tobacco product component recovery system
CN108225222A (en) * 2018-01-17 2018-06-29 河南中烟工业有限责任公司 A kind of microwave type cigarette filter lengths measuring method
US11033049B2 (en) 2018-08-01 2021-06-15 R.J. Reynolds Tobacco Company Apparatus for recovering tobacco material and related method
US11771130B2 (en) 2018-08-01 2023-10-03 R.J. Reynolds Tobacco Company Apparatus for recovering tobacco material and related method

Also Published As

Publication number Publication date
US3783373A (en) 1974-01-01
DE2206656B2 (en) 1978-11-30
DE2206656C3 (en) 1979-08-09
DE2206656A1 (en) 1972-10-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee