US3580053A - Cigarettes testing - Google Patents

Cigarettes testing Download PDF

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Publication number
US3580053A
US3580053A US765374A US3580053DA US3580053A US 3580053 A US3580053 A US 3580053A US 765374 A US765374 A US 765374A US 3580053D A US3580053D A US 3580053DA US 3580053 A US3580053 A US 3580053A
Authority
US
United States
Prior art keywords
chamber
article
pressure
inlet
air pressure
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 - Lifetime
Application number
US765374A
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English (en)
Inventor
Desmond Walter Molins
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.)
Molins Machine Co Ltd
Original Assignee
Molins Machine Co 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 Machine Co Ltd filed Critical Molins Machine Co Ltd
Application granted granted Critical
Publication of US3580053A publication Critical patent/US3580053A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • 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
    • A24C5/3418—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by pneumatic means

Definitions

  • This invention relates to the testing of Cigarettes and similar rodlike articles having an air-permeable filling and a wrapping therefor, for undesirable leaks in the wrapping.
  • Proposals have been made for testing cigarettes by methods which include mounting in carriers each of a stream of cigarettes moving transversely to their lengths, establishing an air pressure difference across the wrapping of each cigarette in turn and determining the airflow through the wrapping by pneumatic means which communicate with the cigarettes through the carrier.
  • the proposals so far made have been complicated and therefore relatively expensive to make and maintain.
  • a method of testing cigarettes and similar rodlike articles which may include a continuous wrapped tobacco rod, comprising moving each article through a test chamber which has an inlet and an outlet for the articles and which communicates with means tending to maintain the air pressure in the chamber different from atmospheric pressure, so that at a moment during its travel the article obturates the inlet and the outlet simultaneously with at least one of its ends communicating with atmosphere, and at this moment detecting the air pressure in the chamber to indicate airflow through the cigarette wrapping between the filling and the test chamber.
  • the articles are passed through the chamber endwise in continuous succession.
  • the means to maintain the test chamber pressure different from atmospheric pressure may be suction means acting to reduce it below'atmospheric pressure and the pressure difference so produced may be relatively high compared with the sort of pressure differences which have heretofore been used in the air-testing of cigarettes being, for instance, of the order of a meter of water. This has the advantage of increasing the effect which a leak has and thereby rendering the test more sensitive and accurate.
  • the invention extends to providing a method of manufacturing cigarettes in which a continuous stream of endwisemoving wrapped tobacco rods are tested for air leaks in the wrapping whilst moving endwise.
  • the test may be performed as the rods leave a cigarette-making machine where tobacco is wrapped in paper to form a continuous wrapped tobacco rod which is then cut up into appropriate lengths.
  • means are provided to space the rods apart as they move endwise, such as for instance in the manufacture of filter tip cigarettes.
  • the test could be performed on the continuous rod itself before it is cut up.
  • the invention can also include a method of testing cigarettes and similar rodlike articles having a wrapping for leaks in the wrapping comprising forming a chamber around each article between its ends establishing an air pressure difference between the interior and exterior of the wrapping across the wrapping so as to tend to cause airflow through the wrapping and detecting air pressure in the chamber to indicate the air flow through the wrapping.
  • H6. 1 is a view of a device testing cigarette rods
  • FIG. 2 is an end view of FIG. 1.
  • the test device comprises a chamber 1 having inlet and outlet apertures 2' and 3 respec tively for cigarettes 4 which are cut from a continuous rod 5 formed on a cigarette-making machine, by a knife 6.
  • the cigarettes are advanced endwise in the direction of the arrow and moved apart from one another by mechanism the details of which are not shown.
  • the inlet and outlet apertures 2 and 3 are formed to be as small as possible having regard to the tolerances on the cigarette diameters.
  • the chamber 1 is provided with a port 7 which is connected to a suction source and to a pressure-sensitive testing device which is in turn connected with rejection means to effect removal of faulty cigarettes from the production stream.
  • test may be carried out on the continuous rod itself, i.e. before the rod is cut.
  • the chamber 1 is located as close as is practicable to the cutoff, and is preferably upstream of the cutoff knife.
  • a method of testing cigarettes and similar rodlike articles traveling in a stream comprising successively moving each article endwise through a test chamber which has an inlet and an outlet for the articles and which communicates with means tending to maintain the air pressure in the chamber different from atmospheric air pressure so that at a moment during its travel the article obturates the inlet and outlet simultaneously, while at the same moment at least one of the ends of the article communicates with atmosphere, and at this moment detecting the air pressure in the chamber to indicate airflow through the article wrapping between the interior thereof and the test chamber.
  • suction is applied to the chamber to reduce the pressure below atmospheric pressure.
  • Apparatus for testing cigarettes and similar rodlike articles moving in a stream comprising a test chamber having an inlet and an outlet for the articles, means to maintain the air pressure in the chamber different from atmospheric pressure, means to move each article successively endwise through said chamber wherein at a moment during its travel the article obturates the inlet and outlet simultaneously with at least one of its ends communicating with atmosphere, and means to detect the air pressure in the chamber at said moment to indicate airflow through the article wrapping between the interior thereof and the test chamber.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Examining Or Testing Airtightness (AREA)
US765374A 1967-10-11 1968-10-07 Cigarettes testing Expired - Lifetime US3580053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4637567 1967-10-11

Publications (1)

Publication Number Publication Date
US3580053A true US3580053A (en) 1971-05-25

Family

ID=10440993

Family Applications (1)

Application Number Title Priority Date Filing Date
US765374A Expired - Lifetime US3580053A (en) 1967-10-11 1968-10-07 Cigarettes testing

Country Status (3)

Country Link
US (1) US3580053A (enrdf_load_stackoverflow)
DE (1) DE1802203C3 (enrdf_load_stackoverflow)
GB (1) GB1239206A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943752A (en) * 1974-05-03 1976-03-16 Molins Limited Testing of cigarettes
US4627448A (en) * 1985-02-25 1986-12-09 Kamm Roger D Tobacco smoke article holder and method therefor
US20080022756A1 (en) * 2003-01-24 2008-01-31 Wilson Ronald F Measuring device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025173B (de) * 1955-07-28 1958-02-27 Hans Ulrich Mueller Dr Vorrichtung zum Bestimmen des Zugwiderstandes von Zigaretten
US2952262A (en) * 1957-01-30 1960-09-13 Molins Machine Co Ltd Manufacture of cigarettes
US3395570A (en) * 1964-12-18 1968-08-06 Hauni Werke Koerber And Co K G Method and apparatus for testing cigarettes or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025173B (de) * 1955-07-28 1958-02-27 Hans Ulrich Mueller Dr Vorrichtung zum Bestimmen des Zugwiderstandes von Zigaretten
US2952262A (en) * 1957-01-30 1960-09-13 Molins Machine Co Ltd Manufacture of cigarettes
US3395570A (en) * 1964-12-18 1968-08-06 Hauni Werke Koerber And Co K G Method and apparatus for testing cigarettes or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943752A (en) * 1974-05-03 1976-03-16 Molins Limited Testing of cigarettes
US4627448A (en) * 1985-02-25 1986-12-09 Kamm Roger D Tobacco smoke article holder and method therefor
US20080022756A1 (en) * 2003-01-24 2008-01-31 Wilson Ronald F Measuring device

Also Published As

Publication number Publication date
DE1802203C3 (de) 1973-12-13
GB1239206A (enrdf_load_stackoverflow) 1971-07-14
DE1802203B2 (de) 1973-05-30
DE1802203A1 (de) 1969-06-04

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