US2704863A - Textile drafting machines - Google Patents

Textile drafting machines Download PDF

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Publication number
US2704863A
US2704863A US261321A US26132151A US2704863A US 2704863 A US2704863 A US 2704863A US 261321 A US261321 A US 261321A US 26132151 A US26132151 A US 26132151A US 2704863 A US2704863 A US 2704863A
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United States
Prior art keywords
aprons
rolls
supporting
roll
pair
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Expired - Lifetime
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US261321A
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English (en)
Inventor
Macdonald Walter
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Individual
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Individual
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Publication date
Priority to NL80959D priority Critical patent/NL80959B/xx
Priority to GB727516D priority patent/GB727516A/en
Application filed by Individual filed Critical Individual
Priority to US261321A priority patent/US2704863A/en
Priority to FR1072521D priority patent/FR1072521A/fr
Application granted granted Critical
Publication of US2704863A publication Critical patent/US2704863A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 improvements in textile drafting machines such as drawing frames, finishers, speeders, reducers, roving frames and spinning frames, and more particularly for controlling and drafting slivers between drawing rolls with long-draft endless aprons therebetween.
  • frames or frame will mean any type of machine used in drafting slivers to a smaller size.
  • Such frames as have been in use heretofore have been constructed with multiple draft means extending throughout the length of the machine, with aprons to guide the roving or sliver between the draft rolls.
  • the top and bottom aprons usually are supported on shafts that extend throughout the length of the machine, or throughout a major portion of the length thereof.
  • One object of this invention is to provide in a frame for easy and quick replacement of the aprons Without the stoppage of the machine or the removal of the supporting or drive shaft, or any portion thereof, or an entire set of aprons.
  • a further object of the invention is to improve the construction of a frame by mounting the long-draft aprons in an individual unit which may be mounted in the frame k U for ready removal therefrom.
  • Still another object of the invention is to provide for the maintenance of proper tension on the long-draft aprons of a frame and for the efiective driving thereof whereby the sliver will be directed through the drawing rolls uniformly and without the collection of appreciable lint or fiy thereon.
  • a still further object of the invention is to provide an individual self-contained, fully assembled detachable or snap-on unit containing two belts or aprons which are positively driven through a series of gears for supporting the sliver and fibers thereof for each individual spindle of a frame and which can be interchanged as a complete unit very quickly even by unskilled labor without requiring trained mechanics and without the stopping of the machine or removing weights, levers, saddles, supporting shafts or any substantial part thereof.
  • the subframe carries individual positive driving means for each apron and may be mounted adjustably on a drive shaft therefor so as to provide positive and uniform operation of the aprons.
  • provision is made for ease of replacement of the aprons by making it possible to remove the individual unit entirely without stopping any other portion of the machine. The spindle is not stopped, but the sliver is broken while 2,704,863 Patented Mar.
  • Fig. 1 is a diagrammatic view of the long-draft mechanism of a frame showing the invention applied thereto;
  • Fig. 2 is a side elevation, partly in section, of the mounting and drive means for the aprons, taken on the line 22 in Fig. 3;
  • Fig. 3 is substantially a plan view thereof at right angles to Fig. 2;
  • Fig. 4 is a view similar to Fig. 2, taken from the opposite side on the line 4-4 in Fig. 3;
  • Fig. 5 is a detail view in elevation showing a modification of apron mounting.
  • the parts of a frame shown in Fig. 1 include a spool 1 from which the sliver R is led through a pair of back rolls 2 to a pair of front or drafting rolls 3, thence onto the usual bobbin carried by a spindle operated in the usual manner. These parts may be operated in any well known manner and be constructed or arranged as desired.
  • an apron drive shaft 4 which preferably extends throughout the length of the frame and is power driven and mounted in suitable bearings 5 supported on the carrier stands or frames 5 at desired points along the length thereof.
  • One drive shaft 4 thus operates all of the long-draft aprons on the corresponding side of the frame.
  • the shaft 4 is provided with rolls 6 at intervals therealong corresponding with the positions of the aprons and cooperating therewith to facilitate the feeding of the sliver through the drafting apparatus.
  • the aprons are designated at 7 and 8, respectively, each of which is in the form of an endless flexible band, and they have parallel runs in relatively close side-by-side relation to receive and control the sliver therebetwen.
  • Th aprons 7 and 8 are supported at one end respectively on rolls 9 and 10, and at the opposite end on guide bars 11 and 12.
  • the rolls 9 and 10 are power driven and operate the aprons which extend thereover, while the guide bars 11 and 12 are fixed and serve to hold the aprons in relatively tight relation while allowing for linear movement of the aprons with the sliver, the aprons sliding circumferentially over the fixed guide bars.
  • the roll 10 is pressed onto a shaft 13 journaled in a pair of laterally spaced side bars 14 at opposite ends of the roll 10.
  • the side bars 14 extend in overlapping relation with the drive shaft 4, shown more clearly in Figs. 2, 3 and 4, and are seated thereon.
  • Each of the side bars 14 has a semi-cylindrical notch 15 in the lower face thereof which is shown as provided with a bushing 16 therein bearing upon the rotatable shaft 4 and supporting the subframe thereon while allowing freedom of turning movement of the shaft relative thereto.
  • the roll 9, which acts as a tension roll, is press mounted on a shaft 17 journaled in bars 18 formed on the ends of bolts 19 extending upwardly through the side bars 14 and provided with wing nuts 20 thereon in the example illustrated as adjusting means for the position of the tension roll 9.
  • the bolts 19 are slidable through openings in the side bars 14 and are capable of lengthwise adjustment relative thereto.
  • the positions of the bolts 19 and of the tension roll 9 are under spring tension by cantilever leaf springs 21 on opposite sides of the subframe 1418.
  • Each of the leaf springs has an end provided with an eye surrounding the bolt 19 and engaging under the nut 20 to apply tension to the bolt at each opposite end of the tension roll 9.
  • the springs 21 are shown as formed on a sheet metal plate 24 secured to the upper faces of the subframe side bars 14 by screws 25, and the springs are offset from the side bars, as illustrated in Figs. 2 and 4.
  • the guide bars 11 and 12 that support the forward ends of the aprons 7 and 8 are mounted in spring clips 26 and 27, which clips are located at opposite ends of the respective guide bars 11 and 12, as shown in Fig. 3, and hold the guide bars securely and rigidly therein.
  • the clips 26 and 27 are carried on the cantilever leaf springs 28 and 29, respectively, formed on spring plates of spring steel or other suitable material, and secured by screws 30 and 31 to the outer ends of the bars 18 and 14, respectively.
  • the spring mounting for the guide bars 11 and 12 presses the inner faces of the spring clips 26 and 27 together.
  • the aprons 7 and 8 be somewhat thinner than the metal of the spring clips which therefore leaves the adjacent faces of the aprons spaced apart sufficiently to receive the sliver therebetween.
  • the shape and character of the leaf springs 28 and 29 may be varied to provide the desired tension on the sliver. These springs serve also to tighten the aprons lengthwise and prevent them from flopping during operation.
  • Variations in the spacing of the aprons may be obtained by the provision of bushings around the guide bars 11 and 12 within the spring clips 26 and 27, which bushings are indicated at 32 in Fig. 5. These bushings are provided at opposite ends of the guide bars at the points within the clips, and thereby serve to space the centers of the guide bars different distances apart according to the thicknesses of the bushings used, thereby obtaining desired spacing of the aprons.
  • the individual unit 1418 is mounted detachably on the shaft 4 with the side bars 14 straddling the drive roll 6 at opposite ends of the latter, as will be apparent from Fig. 3.
  • the disposition of the side bars 14 with respect to the drive shaft 4 and the tension roll 9 acting through the interposed portion of the apron 7 will serve to hold the unit securely on the drive shaft 4, with the apron 7 bearing directly against the roll 6 and pressed thereagainst by the roll 9.
  • the assembly as shown in Fig. 4 is such that the drawing up of the bolts 19 will tend to increase the pressure on the roll 6 in opposition to the pressure of the side bars 14 on the shaft 4.
  • the aprons 7 and 8 are adapted to be power driven from the shaft 4 by a gear 36 fixed on the shaft and meshing with a gear 37 on the roll 9, as shown in Fig. 2.
  • a gear 38 on the roll meshes with the gear 37 and is driven thereby, thus imparting uniform driving movement to both aprons 7 and 8. This provides for a positive drive of both aprons with the uniformity of feed of the sliver therebetween.
  • the individual unit which includes the aprons 7 and 8 may be apphed and removed quickly and easily without disturbing the other parts of the frame and without stopping the machine.
  • the spindle is not stopped but the sliver is broken until the aprons are replaced.
  • the entire individual unit is removed merely by loosening the nuts on the bolts 19 sufficiently to disengage the tension roll 9 from the roll 6 and allow the subframe 14 to be lifted from the shaft 4.
  • new belts are required for the unit, these may be applied and the unit set back in place, or a new unit substituted therefor without waiting for the repair. Consequently, the aprons can be replaced without stopping the machine.
  • This device can be used in processing cotton, worsted, rayon or synthetic yarns.
  • the combination with drawing rolls adapted to receive a sliver therebetween, of long-draft aprons arranged in feeding relation to the drawing rolls to feed the sliver with respect thereto, a drive shaft for the aprons, a subframe, guide means for the respective aprons and journaled in the subframe for supporting the aprons in a unitary assembly, and means adjustably mounting the subframe on the drive shaft for bodily removal of the subframe and the aprons therefrom as a unit.
  • the combination with drawing rolls adapted to receive a sliver therebetween, of long-draft aprons arranged in feeding relation to the drawing rolls to feed the sliver with respect thereto, a drive shaft for the aprons, a subframe, guide means for the respective aprons and journaled in the subframe for supporting the aprons in a unitary assembly, means adjustably mounting the subframe on the drive shaft for bodily removal of the subframe and the aprons therefrom as a unit, and driving means operatively connecting the drive shaft with the aprons and constructed for automatic disconnection upon separation of the subframe from the drafting apparatus.
  • a pair of long-draft aprons rolls supporting the aprons at one end, guide bars supportmg the aprons at the opposite end, and yieldable mountings supporting the guide bars and tensioned in a direction lengthwise of the aprons for holding the aprons taut.
  • a pair of long-draft aprons rolls supporting the aprons at one end, guide bars supporting the aprons at the opposite end, leaf springs supporting the guide bars for yieldable movement toward and from each other.
  • a pair of long-draft aprons rolls supporting the aprons at one end, guide bars supporting the aprons at the opposite ends, and yieldable mountings supporting the guide bars for yieldable movement toward and from each other, said mountings including spring clips engaging the guide bars at opposite ends thereof for bodily separation of the guide bars therefrom.
  • a drafting unit comprising a pair of long-draft aprons, guide means for the aprons including a pair of rolls in guiding relation with the respective aprons, a frame supporting the guide means including the rolls, said frame having a bearing seat thereon spaced from one of the guide rolls and in opposed relation thereto in position to receive a supporting shaft therein mounting the drafting unit thereon.
  • a drafting unit comprising a pair of long-draft aprons, guide means for the aprons including a pair of rolls in guiding relation with the respective aprons, a frame supporting the guide means including the rolls, said frame having a concave bearing seat thereon spaced from one of the guide rolls and in opposed relation thereto in position to receive a supporting shaft therein mounting the drafting unit thereon, and means for adjusting the last-mentioned guide roll relative to the other guide roll.
  • a long-draft unit comprising a pair of long-draft aprons, guide means for the aprons including a pair of rolls in guiding relation therewith, a frame supporting the guide means and having the rolls journaled therein, said frame having a bearing seat thereon supporting the unit on the drive shaft, and means forming a driving connection between said shaft and the pair of apron guide rolls.
  • a drafting unit comprising a long draft apron, means coacting with the apron for drafting a sliver therebetween, means supporting the apron at opposite ends thereof, a single unitary frame having the supporting means for the opposite ends of the apron carried entirely thereby, and means connected with the frame for mounting and supporting the frame on the drive shaft.
  • a drafting unit comprising a pair of long draft aprons, rolls supporting the aprons at one end thereof, guide bars supporting the aprons at the opposite end thereof, a single unitary frame having the rolls and guide bars carried wholly thereby, and means connected with the frame for mounting and supporting the frame on the drive shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US261321A 1951-12-12 1951-12-12 Textile drafting machines Expired - Lifetime US2704863A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL80959D NL80959B (enrdf_load_stackoverflow) 1951-12-12
GB727516D GB727516A (enrdf_load_stackoverflow) 1951-12-12
US261321A US2704863A (en) 1951-12-12 1951-12-12 Textile drafting machines
FR1072521D FR1072521A (fr) 1951-12-12 1952-12-11 Percectionnements aux machines pour l'etirage des textiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US261321A US2704863A (en) 1951-12-12 1951-12-12 Textile drafting machines

Publications (1)

Publication Number Publication Date
US2704863A true US2704863A (en) 1955-03-29

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US261321A Expired - Lifetime US2704863A (en) 1951-12-12 1951-12-12 Textile drafting machines

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US (1) US2704863A (enrdf_load_stackoverflow)
FR (1) FR1072521A (enrdf_load_stackoverflow)
GB (1) GB727516A (enrdf_load_stackoverflow)
NL (1) NL80959B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166060B (de) * 1960-07-05 1964-03-19 Mackie & Sons Ltd J Doppelriemchenstreckwerk fuer Spinnmaschinen mit schmalen Riemchenkaefigen, insbesondere fuer Wolle und gekraeuselte kuenstliche Fasern
US3727391A (en) * 1971-11-04 1973-04-17 Du Pont Apparatus for drafting and twisting fibers

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1092631A (en) * 1912-05-25 1914-04-07 Fernando Casablancas Spinning-frame.
US1481689A (en) * 1921-05-25 1924-01-22 Casablancas Fernando Drawing mechanism for textile rovings
GB309905A (enrdf_load_stackoverflow) * 1928-04-17 1929-07-11
US2132299A (en) * 1937-06-16 1938-10-04 H & B American Machine Company Drawing mechanism for textile slivers or rovings
US2182695A (en) * 1937-02-16 1939-12-05 Honda Kikutaro Spinning frame
US2193196A (en) * 1937-06-15 1940-03-12 H & B American Machine Company Mechanism for drawing textile slivers or rovings
US2209573A (en) * 1938-02-17 1940-07-30 Louie Ban Lem Drawing mechanism for spinning frames and the like
US2304885A (en) * 1939-10-12 1942-12-15 Eastman Kodak Co Yarn drafting process
US2484810A (en) * 1945-09-08 1949-10-18 Dayton Rubber Company Spinning apron

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1092631A (en) * 1912-05-25 1914-04-07 Fernando Casablancas Spinning-frame.
US1481689A (en) * 1921-05-25 1924-01-22 Casablancas Fernando Drawing mechanism for textile rovings
GB309905A (enrdf_load_stackoverflow) * 1928-04-17 1929-07-11
US2182695A (en) * 1937-02-16 1939-12-05 Honda Kikutaro Spinning frame
US2193196A (en) * 1937-06-15 1940-03-12 H & B American Machine Company Mechanism for drawing textile slivers or rovings
US2132299A (en) * 1937-06-16 1938-10-04 H & B American Machine Company Drawing mechanism for textile slivers or rovings
US2209573A (en) * 1938-02-17 1940-07-30 Louie Ban Lem Drawing mechanism for spinning frames and the like
US2304885A (en) * 1939-10-12 1942-12-15 Eastman Kodak Co Yarn drafting process
US2484810A (en) * 1945-09-08 1949-10-18 Dayton Rubber Company Spinning apron

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166060B (de) * 1960-07-05 1964-03-19 Mackie & Sons Ltd J Doppelriemchenstreckwerk fuer Spinnmaschinen mit schmalen Riemchenkaefigen, insbesondere fuer Wolle und gekraeuselte kuenstliche Fasern
US3727391A (en) * 1971-11-04 1973-04-17 Du Pont Apparatus for drafting and twisting fibers

Also Published As

Publication number Publication date
NL80959B (enrdf_load_stackoverflow)
GB727516A (enrdf_load_stackoverflow)
FR1072521A (fr) 1954-09-14

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