US3132384A - Apron clearer arrangement - Google Patents

Apron clearer arrangement Download PDF

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Publication number
US3132384A
US3132384A US75339A US7533960A US3132384A US 3132384 A US3132384 A US 3132384A US 75339 A US75339 A US 75339A US 7533960 A US7533960 A US 7533960A US 3132384 A US3132384 A US 3132384A
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US
United States
Prior art keywords
apron
roll
clearing
positioning
fiber
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
US75339A
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English (en)
Inventor
Russell B Newton
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.)
Deering Milliken Research Corp
Milliken Research Corp
Original Assignee
Milliken Research Corp
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 Milliken Research Corp filed Critical Milliken Research Corp
Priority to US75339A priority Critical patent/US3132384A/en
Priority to ES272660A priority patent/ES272660A1/es
Priority to GB1012714D priority patent/GB1012714A/en
Priority to BE611308A priority patent/BE611308A/fr
Priority to CH1442861A priority patent/CH388823A/fr
Priority to DED37654A priority patent/DE1281904B/de
Application granted granted Critical
Publication of US3132384A publication Critical patent/US3132384A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D01H5/88—Cradles; Tensors
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • This invention relates to textile fiber handling appa ratus, and more particularly to an improvement in the art of drafting textile fibers through the medium of an apron or aprons, being specifically directed to the improved postitioning :of the apron and the reduction or elimination of lint and the like in the area within the apron or aprons.
  • a further difiiculty is the tendency of the apron or aprons to buckle in the fiber control zone, or in other words in the zone where the apron or aprons engage the fibers. This difiiculty is particularly present after the aprons have run for a substantial time and become stretched beyond their original size. Accumulations of lint on the apron roll and/ or nose bar cause this stretching and buckling to assume a washboard or wavy shape.
  • the apron should tend to bow convexly outwardly in the zone between its drafting roll and nose bar, but in actual practice, particularly after long and continued use, the apron does not always exert a bowing force in this desired manner, but instead may bow inwardly or have a more or less washboard bowing lengthwise and/or widthwise in the fiber control zone between the drafting roll and the nose bar.
  • a major feature of the present invention lies in the provision of an improvement in apron drafting apparatus which tends to minimize the foregoing mentioned difficulties of lint accumulation within the apron interior and about the apron drafting roll and/or nose bar, and the variation in control action on the fibers in the zone between the drafting rolls due to buckling or other variations in the position of the apron or aprons in this zone.
  • a still further feature lies in the improved drafting action, particularly in the more even drafting of the fibers, as reflected in a minimizing or reduction of end breakage or ends down of the yarn formed with drafting apparatus utilizing the present invention.
  • a still further feature lies in the provision of an improved apron drafting arrangement which minimizes lint accumulation Within the apron interior and provides for desired position control of the apron in the fiber control area through the provision of a single apron-and-rollengaging unit which serves the combined functions of nose guide for the apron, minimizing or substantially eliminating lint accumulation within the apron, and position control of the apron, particularly in the fiber control zone of the apron.
  • FIGURE 1 is a side elevation of a drafting arrangement incorporating the invention.
  • FIGURE 2 is a view in perspective of one of the apron positioning and clearing members of FIGURE 1.
  • FIGURE 3 is a view in perspective of the apron section of the arrangement of FIGURE 1.
  • FIGURE 4 is a side elevation view illustrating an alternative embodiment according to the invention.
  • FIGURES 5 and 6 are fragmentary views of two further modified drafting arrangements according to the invention.
  • FIGURE 1 the invention is illustrated as applied to a Casablancas type drafting arrangement having two fiber supporting aprons.
  • a suitable guide such as a trumpet 13
  • a first pair of drafting rolls 15 from which the fibers pass to a second pair of rolls 17a, 17b carrying a pair of fiber supporting aprons 19a, 1911 which serve to support and guide the fibers being drafted in the zone between the nip of the middle pair of rolls 17a, l17b and the nip of the succeeding third pair of rolls 21.
  • each of the succeeding pairs of rolls 15, 17, and 21 may be driven at a suitable increasing surface velocity in order to effect the desired degree of drafting between each of the adjacent pairs of rolls.
  • an apron positioning and clearing member 23 is disposed within at least one of the two aprons 19a, 1917, or in the case of a single apron system is incorporated within the single apron, and extends between and in engagement with the circumferential periphery of the associated 17a, 17b and the front smaller radius of curvature nose portion of the respective apron.
  • each of the two aprons has an apron positioning and clearing member '23 disposed there-within, which not only serves to clear the interior of the respective apron of substantially all lint or other foreign material, but also eliminates the necessity for a nose bar as is commonly used in conventional practice with apron drafting systems, in that it serves to position the fiber-engaging run 19a1, 19b1 of the respective apron in the desired location adjacent the fiber flow path, thus maintaining the fibers in their orderly turn or relationship.
  • Each of the two apron clearing and positioning members may be formed in substantially the same shape, as illustrated in FIGURES 1-3 and particularly FIG- URE 2, with the lower of the two members 23 being inverted relative to the upper member, although different configurations may be necessary or desirable for each of the two aprons in some instances.
  • the apron positioning and clearing member takes the form of a block having a generally tapered configuration, and formed of any suitable material, such as Micarta, Bakelite, polyethylene, Delrin, metal, or the like.
  • each of the apron clearing and positioning members 23 is a block formed with a concave surface 23a at one end having a radius of curvature substantially corresponding to the external radius of curvature of the corresponding roll 17a or 171) of the middle roll pair.
  • the block 23 is tapered from this large end toward the front small end to a nose 23b having a radius of curvature which is relatively small, for instance of the order of V ,4; inch radius, and which if desired may have an even smaller radius of curvature in order to permit the aprons to extend as close as possible to the nip of the front roll pair 21, 21 and thereby provide the maximum support and control of the fibers during their passage from the middle roll pair 17a, 17b to the front roll pair 21, 21.
  • each apron may be formed of thinner sheet material than has heretofore been possible, due to the fact that the apron is positioned and supported in the fiber engaging zone by the apron clearing and positioning member 23.
  • the surface of the apron positioning and clearing member 23 is substantially straight between the large concave roll-engaging end 23a thereof and the convex smaller radius nose end 2312 thereof on the side 23c engaged by the fiber-engaging run 19(11, 19111 run of the respective apron.
  • the opposite tapered surface 23d of the apron positioning and clearing member 23 may be either straight or convex (as shown) in order to provide substantially full support and engagement of the apron by the member, to the end that the apron is not only supported but that any external foreign material is substantially prevented from entering the zone within the apron.
  • leading edge 23:11 of the concave end 23a of the clearer block serves as a scraper on both the respective roll 17a, 17b and the interior surface of the apron to aid in keeping the zone within the apron clear of lint and the like.
  • the apron positioning and clearing members may be supported in the desired position through the medium of a pin or pins, which may suitably engage in an aperture or apertures formed in the members.
  • the two positioning and clearing members 23 are secured in position by a U-shaped pin 25, the legs 25a of which extend through complementary apertures 27 in the side walls 31 of the supporting cradle 29, as seen in FIGURE 3, and into corresponding apertures 23 formed in the respective clearing and positioning block 23.
  • the apertures or bores 23f formed in the respective blocks may in one or both instances be oversize compared to the portion of the pin 25 extending therein.
  • the upper apron 19a and associated apron positioning and clearing member 23 may move upwardly about the axis of he roll 17a through a restricted extent of travel corresponding to the amount of lateral free play between the pin 25 and the corresponding bore 23
  • the apron positioning and clearing members are illustrated as being movable toward and away from one another in order to accommodate variations in the material passing therebetween, in some instances it may be desirable to mount these clearing and positioning members in a fixed manner, in which case the mounting and supporting pin may fit in substantially complementary relation into the bore or apertures 23 formed in the clearing and positioning member 23.
  • each of the clearing and positioning blocks 23 is supported in the desired position through the medium of a pin formed or secured on a leaf spring 127 which is in turn secured as by a brad 129 to the outer surface of the cradle side Wall 131.
  • the ends which are seen only in broken lines, may suitable extend into corresponding apertures formed in the side walls and fit into the bore or other aperture 23 formed in the corresponding apron positioning and clearing block.
  • leaf spring 127 and pin 125 are illustrated in FIGURE 4 for each of the two clearing and positioning blocks 23, it will be apparent that another identical but oppositely extending leaf-spring-supported pin 125 may be secured to the opposite cradle wall for supporting each of the two clearing and positioning members 23 if desired.
  • the pin and bore connection may be either loose fit for freedom of movement of one or both of the apron positioning and clearing members or form a substantially complementary tight fit for substantially fixed positioning of the apron positioning and clearing members.
  • the invention is illustrated as applied with only the top apron 219a having an apron positioning and clearing member 223 disposed therein.
  • the single apron positioning and clearing member 223 is in this instance preferably fixed in position, with substantially no provision for lateral movement toward and away from the lower apron, through the medium of a complementary pin 22-5 extending through the side wall of the supporting cradle, the cradle wall being omitted from the drawing for purposes of clarity of illustration of the clearing and positioning member and aprons.
  • the tapered surface 223cof the apron positioning and clearing member adjacent the fiber engaging run of the apron 219a is convex.
  • the radius of curvature or average radius of curvature of this convex surface may be relatively large, the important aspect lying in the convex curvature of the surface 223c in order to better conform the two adjacent runs 219611, 219b1 of the aprons to one another along the fiber engaging portion of their travel.
  • the upper apron 21% is caused to assume a substantially outwardly bowed configuration along its fiber engaging run 219121, whereas the lower apron 21% assumes an elastically flexible substantially concave configuration along the fiber engaging run 219171.
  • FIGURE 6 differs from that of FIGURE 5 only in that the lower apron 319D is provided with a clearing and positioning member, whereas the upper apron 319a is supported at its nose end by a conventional nose bar 335, similar to the nose bar 235 which serves to support the nose portion of the lower apron 21912 in the arrangement of FIGURE 5. It will be noted in this arrangement that the fiber engaging run 319111 of the upper apron 31% is bowed inwardly or concave,
  • a drafting arrangement having a fiber control flexible apron and a rotating apron supporting roll within and in engagement with said apron
  • the improvement comprising a normally substantially stationary apronpositioning-and-clearing and roll-clearing member disposed within said apron and extending between and in rubbing engagement with a peripheral portion of said roll and a portion of said apron spaced from said roll, said member having an apron-reversing convex nose portion spaced from said roll and engaging and guiding said apron to form a small arcuate end portion, said apron having a fiber engaging run extending between said roll and said convex nose portion and a return run also extending therebetween.
  • said apron-positioning-and-clearing member has a concavely arcuate portion extending in contiguous engagement with a portion of the periphery of said roll as an aid to the prevention of accumulation of lint on said roll.
  • apron-positioning-and-clearing member has a surface portion extending along and in closely adjacent relation to a major portion of the inner surface of said fiber-engaging run of said apron extending between said roll and said convex nose portion in order to aid in positioning of said fiber-engaging run of the apron.
  • apron-and-roll-clearing element adapted to engage in rubbing and guiding relation with the inner surface of an apron carried thereabout, said element having a roll-engaging surface at one end thereof adapted to engage in rubbing relation across the width of the apron carrying portion of a roll and having a tapered reduced size opposite apron-engaging-andreversing nose and an apron-run-clearing-and-guiding surface disposed between said one end and said nose and a second element having an apron-run-clearing-and-guiding surface facing and operably associated with and spaced from said apron-run-clearing-and-guiding surface on said first mentioned element, said elements being removably connected together in interspacial relationship.
  • a drafting arrangement according to claim 5 wherein said second element has a roll-clearing surface disposed adjacent said apron-run-clearing-and-guiding surface and adapted to engage in rubbing relation across the Width of the apron carrying portion of the associated roll.
  • said second member is an apron-positioning-and-clearing and roll-clearingmember, a second apron supporting roll, and a second fiber control flexible apron on said second roll, said second member being positioned within said second apron and supporting one run of said second apron in contiguous relation with said fiber engaging run of said first mentioned apron.
  • said apron-positioning-and-clearing and roll-clearing member is a block extending along substantially the width of said apron, said block having a concave surface opposite to said apron-reversing convex nose portion engaging with said roll with a substantially larger average radius of curvature than the radius of curvature of said apron-reversing convex nose portion, and two intermediate surfaces of substantially greater average radius of curvature than said apron-reversing convex nose portion and joining with said apron reversing convex nose portion.
  • a drafting arrangement having a pair of fiber control flexible aprons, each of which have a rotating apron-supporting roll within and in engagement therewith, each of said aprons having an outer face, the outer faces of said aprons being contiguous with one another along a respective fiber engaging run thereof extending from their respective roll to a terminal reversal zone spaced from said rolls, the improvement comprising two apron-positioning-and-clearing and roll-clearing members, each of said members being disposed within a respective one of said aprons and extending between and in rubbing engagement with a peripheral portion of said roll and a portion of said apron at a position spaced from said roll and disposed in said terminal apron reversal zone, each of said members having an apron engaging portion disposed in said terminal apron reversal zone to guide the respective apron in said reversal zone.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US75339A 1960-12-12 1960-12-12 Apron clearer arrangement Expired - Lifetime US3132384A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US75339A US3132384A (en) 1960-12-12 1960-12-12 Apron clearer arrangement
ES272660A ES272660A1 (es) 1960-12-12 1961-12-04 Una disposición de estiraje para la industria textil
GB1012714D GB1012714A (fr) 1960-12-12 1961-12-06
BE611308A BE611308A (fr) 1960-12-12 1961-12-08 Dispositif d'étirage de fibres textiles
CH1442861A CH388823A (fr) 1960-12-12 1961-12-12 Dispositif d'étirage de fibres textiles
DED37654A DE1281904B (de) 1960-12-12 1961-12-12 Riemchenstreckwerk fuer Spinnmaschinen und Spinnereimaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75339A US3132384A (en) 1960-12-12 1960-12-12 Apron clearer arrangement

Publications (1)

Publication Number Publication Date
US3132384A true US3132384A (en) 1964-05-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US75339A Expired - Lifetime US3132384A (en) 1960-12-12 1960-12-12 Apron clearer arrangement

Country Status (6)

Country Link
US (1) US3132384A (fr)
BE (1) BE611308A (fr)
CH (1) CH388823A (fr)
DE (1) DE1281904B (fr)
ES (1) ES272660A1 (fr)
GB (1) GB1012714A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290732A (en) * 1963-12-06 1966-12-13 Deering Milliken Res Corp Drafting arrangement
US3523335A (en) * 1967-09-13 1970-08-11 Deering Milliken Res Corp Pneumatic clearer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007001585B4 (de) * 2006-12-11 2020-02-13 Reinhard König Streckwerk zur Verfeinerung von Fasermaterial und dafür geeignetes Riemchen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065762B (fr) * 1959-09-17
GB851989A (en) * 1958-02-21 1960-10-19 Schlumberger Cie N Improvements in and relating to textile machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1485417U (fr) * 1900-01-01
US2193196A (en) * 1937-06-15 1940-03-12 H & B American Machine Company Mechanism for drawing textile slivers or rovings
US2179078A (en) * 1938-02-28 1939-11-07 Raybestos Manhattan Inc Method and means for making drafted yarn
CH236968A (de) * 1943-03-26 1945-03-31 Gmbh F X Richter Doppelriemchenstreckwerk.
CH267667A (de) * 1948-07-10 1950-04-15 Rieter Joh Jacob & Cie Ag Verfahren zum Verziehen von Vorgarnen und Streckwerk zur Ausführung des Verfahrens.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065762B (fr) * 1959-09-17
GB851989A (en) * 1958-02-21 1960-10-19 Schlumberger Cie N Improvements in and relating to textile machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290732A (en) * 1963-12-06 1966-12-13 Deering Milliken Res Corp Drafting arrangement
US3523335A (en) * 1967-09-13 1970-08-11 Deering Milliken Res Corp Pneumatic clearer

Also Published As

Publication number Publication date
DE1281904B (de) 1968-10-31
CH388823A (fr) 1965-02-28
GB1012714A (fr) 1965-12-08
ES272660A1 (es) 1962-04-01
BE611308A (fr) 1962-06-08

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