US3443880A - Jigger - Google Patents

Jigger Download PDF

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Publication number
US3443880A
US3443880A US581634A US3443880DA US3443880A US 3443880 A US3443880 A US 3443880A US 581634 A US581634 A US 581634A US 3443880D A US3443880D A US 3443880DA US 3443880 A US3443880 A US 3443880A
Authority
US
United States
Prior art keywords
web
jigger
rollers
roller
wound
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
US581634A
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English (en)
Inventor
Hans Borge Nielsen
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.)
Vald Henriksen AS
Original Assignee
Vald Henriksen AS
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 Vald Henriksen AS filed Critical Vald Henriksen AS
Application granted granted Critical
Publication of US3443880A publication Critical patent/US3443880A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/32—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of open-width materials backwards and forwards between beaming rollers during treatment; Jiggers

Definitions

  • the present invention relates to a jigger, i.e., a dyeing machine of the kind used for dyeing or other liquid treatment of fabric webs in lengths of, for example, 100- 4000 m.
  • the jigger is of the kind having a vat containing a dyeing or other liquid for treatment, through which a fabric web is passed, and two main rollers on which the web is alternately wound and unwound, the rollers being driven by a motor with an automatic reversing mechanism in such manner that the rotation is reversed whenever the web on one of the rollers has been unwound.
  • the fabric web treated on a jigger passes many times from one roller to the other, but this operation has to be interrupted repeatedly, often for several minutes, for example for adding dyes and chemicals to the liquid in the vat, and this involves difficulties when the machine is to be re-started because the liquid, e.g. the colored liquor, owing to gravity sinks into the lower half of the wound fabric web, whereby the said roll of material becomes eccentric and very heavy on one side, resulting in widely unevened tensions in the material and correspondingly varying actions on the motor. This may involve mechanical damage to, or non-uniform dyeing of the fabric.
  • the automatic reversing mechanism of the jigger is so adapted that at any desired stage of the passage of the web between the rollers the said mechanism may be adjusted to cause automatic reversal at brief intervals of time at least one revolution of the slower rotating roller.
  • this form of reversal is used in the extreme positions in which all the material is wound on one of the rollers of the jigger, the jigger will perform a pendulating movement instead of being stationary. This will prevent the liquid contained in the web roll from sinking into the lower part and thereby to become inordinately heavy on one side.
  • the jigger according to the invention may also partly relieve the general disadvantage of jiggers in that they are unable to treat any point of a web of fabric quite uniformly since a point at the middle of the web is immersed in the liquid of the vat once during each passage at equal intervals of time between the immersions, while points at the ends of the web are immersed in the liquid twice during each two passages, there being, every second time, a long interval of time between the immersions and every second time a brief interval of time.
  • the reversal is to take place after at least one revolution of the roller since it has been found that an apparently sufficient reversal after each half revolution of the roller fails to give the desired result.
  • reversal after more than one revolution of the roller affords no additional advantages, and the reversing mechanism according to the invention is therefore adapted to effect reversal at each revolution of the slower roller.
  • a pendulation of only one revolution of the roller, that is, with only the minimum length of the web being unwound and wound during the pendulation, is also advantageous for another reason, more particularly if a sample is to be cut from the material during the pendulation.
  • the slower roller is that on which the greater amount of material has been wound, which, in the case of a full passage of the web, means the roller with the wound material. Since it is chiefly in the extreme positions, in which the whole fabric web has been wound on one of the rollers, that it is necessary to avoid rolls heavy on one side, the reversing mechanism is adapted in such manner that it may be switched to a more frequent reversal after a roll has been wound with a specified length of material as detected by means of a passage counter.
  • the reversing mechanism is, therefore, also adapted in such manner that it may be switched manually to frequent reversal, at any stage whatever, of the passage of the web between the rollers.
  • a two-speed motor controlled by the reversing mechanism in such manner that it is switched to its slow speed simultaneously with the reversing mechanism being changed from normal reversal to frequent reversal. Any excessive heat development in the motor during the pendulation of the jigger is thereby avoided, and at the same time it becomes easier to cut a sample from the moving web.
  • the reversing mechanism While the reversing mechanism, on reversing at normal frequency, is activated by end stops provided on the two rollers of the jigger, it may, when performing frequent reversals, be controlled in many different ways, of which the simplest is control of the rollers, for example by a means operating in connection with the rollers and switching the mechanism for each revolution of the rollers.
  • the reversing mechanism may also be controlled by the web whereby the passage of a definite length of the web in one direction or the other activates the reversing mechanism.
  • the reversing mechanism is, however, preferably controlled by time, for example in such manner that at each switching of the mechanism to frequent reversal a timing member is activated which after a desired interval of time causes the web to reverse its direction of movement.
  • the jigger will hereby be adapted in such manner that only in case of a certain material in a certain position, it reverses exactly at each full revolution of the roller, while in all other cases it reverses after more than one revolution of the roller.
  • this does not reduce the effect of the frequent reversal in regard to avoiding rollers that are heavy on one side, and at the same time it becomes possible to use an electric relay as a timing member so that the entire operation and control of the jigger is electrical.
  • FIG. 1 of the accompanying drawing there is illustrated schematically the disadvantage of known jiggers in that the liquid will settle down by gravity into the lower half of the wound wet web when the roller onto which it is wound remains stationary.
  • FIG. 2 illustrates the result which is achieved by the invention as indicated by the arrow A representing the pendulating movement of the wound web.
  • an improvement comprising the steps of: producing an oscillating, pendulous movement of the roller on which the fabric web is being wound at periodic intervals corresponding to at least one revolution of the slower rotating roller, varying the frequency of the oscillating movements to produce more frequent oscillation when the material on the winding roller has reached a prescribed amount, and decreasing the speed of revolution of the rollers when the frequency of oscillation is increased.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US581634A 1965-09-23 1966-09-23 Jigger Expired - Lifetime US3443880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK489465AA DK108522C (da) 1965-09-23 1965-09-23 Jigger.

Publications (1)

Publication Number Publication Date
US3443880A true US3443880A (en) 1969-05-13

Family

ID=8137612

Family Applications (1)

Application Number Title Priority Date Filing Date
US581634A Expired - Lifetime US3443880A (en) 1965-09-23 1966-09-23 Jigger

Country Status (8)

Country Link
US (1) US3443880A (en, 2012)
AT (1) AT270558B (en, 2012)
CH (1) CH443202A (en, 2012)
DE (1) DE1610974A1 (en, 2012)
DK (1) DK108522C (en, 2012)
GB (1) GB1157650A (en, 2012)
NL (1) NL6613492A (en, 2012)
SE (1) SE321914B (en, 2012)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB438834A (en) * 1933-12-30 1935-11-25 British Celanese Improvements in or relating to jig dyeing or like fabric treating processes
SU140034A1 (ru) * 1961-01-23 1961-11-30 Р.М. Трахтенберг Способ реверсировани привода красильно-роликовой машины и устройство дл его осуществлени

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB438834A (en) * 1933-12-30 1935-11-25 British Celanese Improvements in or relating to jig dyeing or like fabric treating processes
SU140034A1 (ru) * 1961-01-23 1961-11-30 Р.М. Трахтенберг Способ реверсировани привода красильно-роликовой машины и устройство дл его осуществлени

Also Published As

Publication number Publication date
CH443202A (de) 1967-09-15
GB1157650A (en) 1969-07-09
AT270558B (de) 1969-05-12
DK108522C (da) 1968-01-02
DE1610974A1 (de) 1970-12-23
SE321914B (en, 2012) 1970-03-23
NL6613492A (en, 2012) 1967-03-28

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