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US2899714A - Textile fibre drafting apparatus - Google Patents

Textile fibre drafting apparatus Download PDF

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Publication number
US2899714A
US2899714A US73240358A US2899714A US 2899714 A US2899714 A US 2899714A US 73240358 A US73240358 A US 73240358A US 2899714 A US2899714 A US 2899714A
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US
United States
Prior art keywords
tensor
cradle
side walls
band
edges
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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
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English (en)
Inventor
Joseph Noguera
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.)
Casablancas High Draft Co Ltd
Original Assignee
Casablancas High Draft 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 Casablancas High Draft Co Ltd filed Critical Casablancas High Draft Co Ltd
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Publication of US2899714A publication Critical patent/US2899714A/en
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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
    • D01H5/26—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 fibre drafting apparatus of the well-known Casablancas type employing t-wo superposed endless bands which .are guided over rear driving rollers and separate front tensors and between separate upper and lower cradles which carry the respective tensors, .so that adjoining runs of .the'ban'ds co-operate to guide and control fibres passing therebecradle and a broad platform-like lower tensor, which is interchangeably locatable in the lower cradle, are adapted to inter-engage in the assembled position to determine the permitted maximum tensor spacing at the delivery opening.
  • Figure 1 is a cross-sectional elevation showing three consecutive roller lines of a drafting apparatus constructed in accordance with the invention, parts of the apparatus which have no bearing on the invention being omitted,
  • Figure 2 is a plan view of the .two-belt mechanism forming part of the apparatus shown in Figure 1, and
  • Figures 3, 4 and are respectively a plan, .front elevation and side elevation, to a larger scale, showing the detailed construction of a lower, tensor.
  • the invention is applied to a drafting apparatus having three consecutive roller lines, the rear roller line being composed of .upper and lower holding rollers 1 and v2, the intermediate .roller line being composed of upper and lower band driving rollers 3 and 4, whilst the front roller .line is composed of upper and lower drawing rollers 5 and 6.
  • Carried by the respective band driving rollers 3 and 4 are two cooperating superposed endless bands 7 and 8 having adjoining runs between which textile fibres :are guided and controlled during their passage from the holding rollers 1 and 2 to the drawing rollers 5 and 6. 'At'their forward ends the bands 7 and 8 aresupported by separate upper and lower tensors 9 .and "10 which will later be referred .to in more detail.
  • the two driving rollers 3 and 4 are arranged, in the :usual manner, with their peripheries close together to form a ffirm gripping position or nip .A at the entry end of .the co-operating runs of the superposed bands, whilst .the
  • an upper cradle having a pair 5 of laterally spaced side walls 11 and a separatelower cradle having a pair of laterally spaced side walls 12.
  • the spacing of the upper andlower cradle side walls is substantially the same sothat these cradles will'be approximately in edge to edge relationship when operatively positioned as can be seen from an examination of .
  • Figures 1 and 2. The side walls 12 of the lower cradle are projected downwardly at their forward ends and are joined together at the lower ends of the projections by a transverse tie bar 13. These cradle walls are also joined at their rear ends by a further transverse tie bar 14 and are provided, intermediate the tie :bars, with downwardly directed'registering slots 15 for engaging around necks 4a at oppositeends of the bottom driving roller 4.
  • each lower cradle side wall 12 is upwardly extended at the rear end and the leading edges 16 of these upward extensions are of arcuate 'form to provide seatings 'fornecks 3a on the upper driving roller.
  • the upper edges of the lower cradle side walls are shaped so as approximately to follow the contours of the lower edges of the upper cradle side walls as will be later explained.
  • the latter' Towards the forward ends of the lower cradle side walls,'the latter'are formed with recesses 17 which open through the upper side wall edges and serve to locate the lower tensor 10.
  • These lower cradle side wall recesses 17,'which are in register, are undercut at their rear ends 17a and terminate, at their forward ends, in upstanding fingers 18.
  • the lowertenson which can be seen-most clearly in Figures 3, 4 and 5, is in the form of a broad platformlike bar member which is arranged to extend across the inside of the lower band 8 'to support the operative band run.
  • This lower band 8 returns around the front or leading edge 10a of'the tensor bar at the-delivery opening B between the bands.
  • the lower tensor bar has a slightly arcuate or convex upper surface in the direction of its breadth (i.e. from the front to the v rear edge) so that theoperative lower band run may be more or less deflected, depending upon the radius of curvature, into a shallow arcuate path in passing over the lower tensor.
  • lateral flaps 20 which bear on the tops of the fingers 18 defining the forward ends of recesses 17, these 'flaps 20 being rearwardly and'downwardly extended at 20:: to provide downwardly directed abutment edges for interengaging the forward ends of the upper cradle side walls 11 as will be later explained.
  • the upper tensor 9 is in the form of a cross-piece which is fixed between the upper cradle'side walls 11 and serves to join these walls rigidly together.
  • the forward edge 9a of this tensor is rounded for the purpose of guid- .ing the front end of the upper belt 7 and the cross-piece is arched orvangled awayfrom the operative run of the upper band as shown.
  • the rear end edges of the upper cradle side walls '11 have arcuate recesses 11a formed therein for bearing against the upper roller necks 3a at positions opposed to the seatings for the aforesaid upper-roller necks which are provided by the arcuate portions 16 ofthe lower cradle side walls.
  • the front edges of the upper cradle side walls are also recessed to form forwardly projecting hook parts 11b at the lower recess ends which can be engaged under the respective abutment edges of the lower tensor front upper cradle side walls can be hooked under either of two alternative pairs of abutment edges 20b or 200.
  • the size of delivery opening B can be varied, without dismantling or disturbing the apparatus, this serving at the same time also to vary the degree of deflection to which the operative band runs are subjected between the driving rollers and delivery opening.
  • small projections 21 are provided beneath the front tensor edge for abutting the side faces of the fingers 18 on the lower cradle side walls 12.
  • the upper surfaces of flaps 20 are preferably also marked with appropriate numbers as at 22 which become visible alternatively according to the lateral tensor setting. It is, of course, also possible to provide lower tensors having different curvatures'or shapes to vary the form of band deflection. For further distinguishing different tensors, the latter may be also finished in different colours by various known processes.
  • the operative runs of the upper and lower bands 7 and 8 will be caused to impinge upon one another resiliently so that the forward end of the upper cradle will always have a tendency to swing upwards about the axis of the rear driving roller 3.
  • the upper cradle will always tend to lift at the front as far as the abutment edges 20b, 20c on the lower tensor flap extensions will allow.
  • the upper cradle and thus also the upper tensor can be caused to swing downwardly or upwardly to give a narrower or wider gap at the delivery opening B.
  • the degree of deflection of the operative band runs will also be altered inversely to the size of delivery opening to vary the control exercised on fibres passing therebetween. This follows from the fact that, with a smaller or larger delivery opening, the operative runs of the bands will be pressed more or less firmly against the lower tensor.
  • the undercut portions 17a of recesses 17 are given ample depth to allow the bottom tensor to move rearwardly and completely slacken the lower band 8 when the upper band driving roller 3 together with the band 7 and upper cradle, are lifted (in known manner) away from the lower band and cradle to expose the drafting field.
  • the band 8 is, of 7 course, again automatically tightened when the roller 3,
  • band guide cradle which carries said upper tensor and is adapted for adjustable interengagement with said lower tensor to determine the size of a delivery opening formed by said tensors between adjoining runs of said bands.
  • a textile fibre drafting apparatus comprising upper and lower belt driving rollers, a pair of co-operating belts running one over each said roller, a lower belt guide cradle, a front platform-like lower belt supporting tensor interchangeably carried by said lower cradle, an upper front belt supporting tensor and an upper belt guide cradle which carries said upper tensor and is adapted for adjustable hooked engagement with said lower tensor;
  • a drafting apparatus as claimed in claim 5 wherein visual markings are provided on the lower tensor to indicate which pair of abutments is operatively positioned, and wherein projections are provided beneath the leading edge of the lower tensor to bear against sidefaces of the fingers and thereby locate the tensor laterally with one or other pair of abutment edges in operative posltion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US73240358 1957-05-02 1958-05-01 Textile fibre drafting apparatus Expired - Lifetime US2899714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14080/57A GB835300A (en) 1957-05-02 1957-05-02 Improvements in textile fibre drafting apparatus

Publications (1)

Publication Number Publication Date
US2899714A true US2899714A (en) 1959-08-18

Family

ID=10034628

Family Applications (1)

Application Number Title Priority Date Filing Date
US73240358 Expired - Lifetime US2899714A (en) 1957-05-02 1958-05-01 Textile fibre drafting apparatus

Country Status (5)

Country Link
US (1) US2899714A (de)
CH (1) CH363916A (de)
DE (1) DE1075025B (de)
FR (1) FR1206024A (de)
GB (1) GB835300A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310845A (en) * 1964-07-17 1967-03-28 Deering Milliken Res Corp Textile drafting arrangement
US3890677A (en) * 1971-07-15 1975-06-24 John Michael Noguera Fiber drafting apparatus
US5335397A (en) * 1992-06-27 1994-08-09 Hans Stahlecker Two-apron drafting unit for spinning machines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB981371A (de) * 1960-04-19 1965-01-27 Mackie & Sons Ltd J
DE1294276B (de) * 1964-02-14 1969-04-30 Maremont Corp Doppelriemchen-Streckwerk fuer Spinnmaschinen mit einstueckigem Riemchenkaefig

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020483A (en) * 1934-01-02 1935-11-12 Whitin Machine Works Long draft spinning
US2100139A (en) * 1935-01-12 1937-11-23 Honda Kikutaro Apparatus for giving drafts to cotton slivers
US2532275A (en) * 1948-02-20 1950-11-28 Anselm And Company Inc Textile drafting and spinning
US2662249A (en) * 1951-11-30 1953-12-15 Neu Karl-Hans Double belt drawing mechanism for textile machines
US2677858A (en) * 1953-04-08 1954-05-11 Whitin Machine Works Cradle for top aprons as used in high-draft systems
US2717425A (en) * 1953-04-17 1955-09-13 Casablancas High Draft Co Ltd Drafting apparatus for textile fibres

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1485417U (de) * 1900-01-01
GB590288A (en) * 1945-03-30 1947-07-14 John Schofield Improvements in high drafting mechanism for spinning frames
DE976037C (de) * 1949-07-19 1963-01-24 Denkendorf Forschungsgesellsch Doppelriemchen-Streckwerk
FR1064744A (de) * 1951-08-09 1900-01-01
DE1037334B (de) * 1954-12-08 1958-08-21 Skf Kugellagerfabriken Gmbh Doppelriemchen-Streckwerk fuer Spinnereimaschinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020483A (en) * 1934-01-02 1935-11-12 Whitin Machine Works Long draft spinning
US2100139A (en) * 1935-01-12 1937-11-23 Honda Kikutaro Apparatus for giving drafts to cotton slivers
US2532275A (en) * 1948-02-20 1950-11-28 Anselm And Company Inc Textile drafting and spinning
US2662249A (en) * 1951-11-30 1953-12-15 Neu Karl-Hans Double belt drawing mechanism for textile machines
US2677858A (en) * 1953-04-08 1954-05-11 Whitin Machine Works Cradle for top aprons as used in high-draft systems
US2717425A (en) * 1953-04-17 1955-09-13 Casablancas High Draft Co Ltd Drafting apparatus for textile fibres

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310845A (en) * 1964-07-17 1967-03-28 Deering Milliken Res Corp Textile drafting arrangement
US3890677A (en) * 1971-07-15 1975-06-24 John Michael Noguera Fiber drafting apparatus
US5335397A (en) * 1992-06-27 1994-08-09 Hans Stahlecker Two-apron drafting unit for spinning machines

Also Published As

Publication number Publication date
FR1206024A (fr) 1960-02-05
DE1075025B (de) 1960-02-04
GB835300A (en) 1960-05-18
CH363916A (de) 1962-08-15

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