US2929129A - Slub catcher - Google Patents

Slub catcher Download PDF

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Publication number
US2929129A
US2929129A US780456A US78045658A US2929129A US 2929129 A US2929129 A US 2929129A US 780456 A US780456 A US 780456A US 78045658 A US78045658 A US 78045658A US 2929129 A US2929129 A US 2929129A
Authority
US
United States
Prior art keywords
yarn
slub
blade
blades
block
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
US780456A
Other languages
English (en)
Inventor
Samuel L Abbott
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.)
ABBOIT MACHINE Co Inc
Original Assignee
ABBOIT MACHINE CO Inc
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 ABBOIT MACHINE CO Inc filed Critical ABBOIT MACHINE CO Inc
Priority to US780456A priority Critical patent/US2929129A/en
Priority to FR813107A priority patent/FR1244626A/fr
Application granted granted Critical
Publication of US2929129A publication Critical patent/US2929129A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/061—Mechanical slub catcher and detector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • 2,625,732, dated January 20, 1953 discloses a slub catcher in which an enlargement in the yarn is laterally deflected by the inclined entering edge of an upper blade which defines a passage for normal yarn, and the yarn led by such deflection into a slot defined-by a lower blade, with the yarn passage defined by the upper blade being provided with an enlarged exit for the release of knots or very short enlargements which do not engage the lower blade as the yarn is deflected, and with the slot defined by the second blade continuing laterally beyond the path of yarn deflected to this exit for knots to a region where a slub is snagged, as by a tapered snagging slit.
  • the yarn may be compared to a bow string.
  • the yarn normally runs straight vertically under the influence of its tension alone.
  • force must .be applied by the blade, and this force is secured by the reaction of the blade o'n the running yarn. If a theoretical balanced condition is assumed in which the yarn were to continue running in a constant deflected path, neither moving up or down the blade away from or toward the undeflected vertical position, it may be shown graphically that the force of the blade reacting on the yarn is very nearly pro-- portional to the extent of the deflection from the normal vertical path.
  • the slub could be deflected faster and more positively laterally by setting the opposed elements of the slub catcher closer together so that the blades exerted a greater deflecting force, but this tends to deflect the normal larger-diameter parts of the yarn as well as the slubs.
  • the slub encounters a new third or lowermost blade which, soto speak, takes over the escape-resisting and laterally-deflecting functions relinquished by the upper blade. In this way the slub is led to its maximum lateral displacement, where it is snagged, while under the escape-resisting and laterallydeflecting influence of both the second and the new third blade.
  • Fig.1 is a view mainly. in front elevation showing the front cover plate of a traveling spindle winding unit with parts removed and showing the improved slub catcher of the present invention applied thereto;
  • Fig. 2 is a vertical sectional view taken on the line 22 of Fig. l;
  • Fig. 3 is a diagram in the nature of a left-side elevation of the two blocks of the slub catcher, to greatly enlarged scale, and showing various positions of the yarn and the relation of the yarn to the blades;
  • Fig. 4 is a face view of the opposed portions of the pivotally mounted block and the stationary block;
  • Fig. 5 is an elevation of the right side or operative face of the pivotally mounted block
  • Fig. 6 is a plan of the block of Fig. 5;
  • Fig. 7 is a perspective view of the stationary block.
  • the yarn Y runs as in Fig. 1 between a stationary block 10, which is cut away on its left face, as subsequently described, to form the three blades mentioned above, and a pivotally mounted block 11, which is cut away on its right face to receive the yarn.
  • Fig. 1 exaggerates this cutting away of the block 11.
  • the front cover plate 15 of a winding unit carries a base black 16.
  • the stationary block is secured in an inclined position to a corresponding in- .clined surface of the base block 16.
  • the pivotally mounted block 11, Fig. l is rotatable by a spindle 18, having a pivot portion which passes through the movable block and pivots in the base block as indicated at 19 in Fig. 2.
  • the spindle 18 is yieldingly urged against the movable 'the two blocks for cleaning as by an air blast.
  • a guide bracket 27 engages the yarn below the slub catcher and is adjustable vertically to vary the length of yarn that can be deflected, that is, the length of the bow-string, thus to vary the sensitivity of the slub catcher.
  • the pivotally mounted block 11 best shown in Figs. 5 and 6 is cut away by grinding on its face which opposes the block 10 to receive the yarn, the extent of this cutting away, dimension A, being exaggerated irtFig. 6.
  • An inclined surface portion B of the block 11 defines tapered snagging slits in conjunction with blade surfaces of the block 10.
  • removable blocks 11 are provided in a range of dimensions A, the setting of the slub catcher (.008 inch, .012 inch, etc.) being determined by this dimension A of the removable block, and the dimensions and form of the companion stationary block it) being constant.
  • the stationary block 10 shown in perspective in Fig. 7, is essentially rectangular with various cut away surfaces.
  • Two V-shaped slots divide the operative face of the block into first, second and third blades 31, 32 and 33, the elfective faces of which preferably lie in the same vertical plane.
  • Position N represents the normal running position in which the yarn runs between the upper blade 31 and block 10 out of reach of the blades 32 and 33.
  • Position KS indicates the bow string condition of the yarn when the yarn is deflected to the exit 35 of the upper blade and the upper blade becomes ineffective to 'prevent escape of an enlargement or to deflect it farther.
  • This deflection to this position KS can be caused either by a knot or by a slub. If the deflection to position K--S is caused by a knot and no slub is involved, the knot will escape at this position and the yarn will snap back to position N. If this deflection to position KS is caused by a slub, the deflection will continue to a position such as indicated at S where the slub is caught in the tapered slots formed by blades 32, 33 and the inclined surface portion B of block 11.
  • the slub catcher is capable of more selective action as between long, soft slubs and the normally occurring large diameter portions of the yarn.
  • a slub catcher including means for defining a passage through which normal yarn is adapted to run, said passage-defining means including a blade having its entering side inclined to the path of the yarn so as to tend to deflect enlarged yarn laterally and said passage having an enlarged exit opening laterally displaced from the normal yarn path for the release of knots or short yarn enlargements deflected to said exit opening, a second blade spaced in advance of the first blade, said second blade having its entering side inclined to the path of the yarn and extending laterally beyond the path of the deflected yarn runm'ng to said exit opening, and a third blade spaced from the second blade in advance thereof in a region which begins before the region of maximum lateral displacement of a slub beyond the exit and extends into said region of maximum lateral displacement, said third blade also having its entering side inclined to the path of the yarn, the slub catcher including surface portions cooperating with the second and third blades to press a deflected slub against said second and third blades whereby the slub

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US780456A 1958-12-15 1958-12-15 Slub catcher Expired - Lifetime US2929129A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US780456A US2929129A (en) 1958-12-15 1958-12-15 Slub catcher
FR813107A FR1244626A (fr) 1958-12-15 1959-12-15 Intercepteur des boudins de fils textiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US780456A US2929129A (en) 1958-12-15 1958-12-15 Slub catcher

Publications (1)

Publication Number Publication Date
US2929129A true US2929129A (en) 1960-03-22

Family

ID=25119629

Family Applications (1)

Application Number Title Priority Date Filing Date
US780456A Expired - Lifetime US2929129A (en) 1958-12-15 1958-12-15 Slub catcher

Country Status (2)

Country Link
US (1) US2929129A (fr)
FR (1) FR1244626A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071839A (en) * 1959-05-29 1963-01-08 Charlie R Marshall Method and means for catching slubs in moving textile strands

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071839A (en) * 1959-05-29 1963-01-08 Charlie R Marshall Method and means for catching slubs in moving textile strands

Also Published As

Publication number Publication date
FR1244626A (fr) 1960-10-28

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