US2777168A - Noguera - Google Patents

Noguera Download PDF

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Publication number
US2777168A
US2777168A US2777168DA US2777168A US 2777168 A US2777168 A US 2777168A US 2777168D A US2777168D A US 2777168DA US 2777168 A US2777168 A US 2777168A
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Prior art keywords
tensor
bar
belt
arm
cradle
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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)
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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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D01H5/88—Cradles; Tensors

Definitions

  • This invention relates to drafting apparatus for textile fibres of the kind employing two superposed endless belt loops having co-operating belt runs serving to guide and feed the fibres being drawn, the belt loops being supported at their rear or inlet ends by transverse driving'rollers and at their front or outlet ends by tensor arms, and being guided laterally by cradle side walls.
  • the tensor arms in such apparatus may form part of a two-pronged tensor or may be entirely separate, and are located one in each belt loop to maintain the front ends of these loops in the correct relative working position, i. e. to form the characteristic yielding delivery nip from which the fibres are drawn by following drawing rollers.
  • a tensor arm in the form of a flat elongated bar having a supporting neck at each end, shaped for engagement in slots in the respective side walls of the cradle, and having opposite side edges which are parallel to, but at different distances from, the longitudinal axis through the centres of the said supporting necks, the arrangement being such that the said arm can be inserted, from either side of the cradle, into an operative position in the cradle slots in which one said side edge of the arm bears against the inner surface of the associated belt loop and, from the same side of the cradle, can be removed from said' slots, turned about the said longitudinal axis and reinserted into the slots so that the other said edge bears against the belt loop inner surface thereby varying the position of the loop and, consequently, the pressure of the loop on the fibres.
  • One of the ends of the bar is preferably pointed to facilitate the entry of the bar into its operative position in the cradle slots and the opposite end is preferably in the form of a head which can be readily handled.
  • a number of tensor arms of different sizes will usually be 2,777,168 Patented Jan. 15, 1957 provided so that the pressure of the belt loops can be varied over a considerable range, and the head of .each arm may conveniently have a form of visual marking to enable the arm size to be readily identified.
  • Figure l is a part-sectional side elevation of a two belt drafting apparatus, the forward ends of both belt loops tensor arm in accordance with the invention
  • Figure 5 is a front elevation corresponding to Figure 4 but with the endless belts omitted
  • Figure 6 is a plan view of a tensor arm as shown in Figures 4 and 5
  • FIGS 1 to 3 of the drawings an embodiment of the invention is illustrated which is suitable for use with a drafting apparatus having two comparatively wide superposed belt loops 1 and 2 which are supported at their rear ends respectively on driving rollers 3 and 4 and guided laterally by spaced parallel side walls 5.
  • the walls 5 are coupled together in known manner by transverse members 6 to form a cradle.
  • the forward ends of the belt loops 1 and 2 are each supported by an adjustable tensor arm 7, the tensor arms in turn being supported in appropriate slots 511 formed in the leading edges of the cradle side walls 5.
  • Each tensor arm 7 is in the form of an elongated bar member having parallel side edges 7a and 7b which are curved or arcuate in cross-section.
  • Supporting necks 8 and 9 are provided one near each end of the bar member, these neck portions being co-planar with the bar member but somewhat narrower for engagement in the slots 5a in the cradle side walls 5 as aforesaid.
  • the shaping of the bar 7 is such that the parallel side edges 7a and 7b are at different distances from a longitudinal axis which extends parallel to the side edges and through the centres of the reduced bar supporting necks 8 and 9.
  • One of the bar ends 10 is extended beyond the adjacent supporting neck portion 8 to form a point at the extremity of the aforesaid longitudinal axis.
  • This pointed end 10v facilitates the entry of the bar into the associated belt loop and its location in the supporting slots in the cradle side walls.
  • the other end of the bar is extended beyond the adjacent supporting neck portion 9 to provide a head or handle 11 at the extremity, the handle being located in a plane perpendicular to the side faces of the bar.
  • the handle 11 may, as illustrated, be of triangular shape in plan and may be marked on each face with a different number to indicate, with reference to the complementary tensor arm, the size of the belt delivery nip, i. e.
  • tensor arms having their side edges 7a, 7b spaced from the longitudinal axis as aforesaid by different amounts, may be available to give a wide range of pressures at the delivery nip.
  • the heads of the arms may be marked with members arranged to indicate the proportion of the gap which each tensor arm provides so that the total gap is the sum of the two figures appearing uppermost on the heads.
  • FIGS 4 to 6 there is shown a second embodiment of the invention in which a tensor arm 12 is employed with a two belt drafting apparatus having the upper belt loop 1 supported at the forward end by a fixed tensor 13, the tensor arm 12 being utilized only in association with the lower belt 2.
  • the belt loops 1 and 2 are supported at their rear ends, as in the previous apparatus, by driving rollers 3 and 4 but are laterally guided by separate pairs of spaced parallel side walls 14 and 15 which constitute respectively upper and lower cradles.
  • the side walls 14 of the lower cradle are rigidly coupled by transverse members 16 in known manner and are provided with corresponding slots 14a in their leading edges for the reception of the neck portions 17, 17a of the tensor 12.
  • the side walls 15 constituting the upper cradle are closer together than the walls 14 of the lower cradle so as to fit therebetween, as shown in Figures 4 and 5, and are rigidly coupled by the fixed tensor 13. Extending from each end of the tensor 13 beyond the respective sidewalls 15, is a pin 18, these pins 18 being arranged to engage respectively in backwardly extending hook-like extensions 14b provided one at the upper leading corner of each lower cradle side wall 14, as shown in Figure 4.
  • the tensor 12 is extended at one end to form a point 19 at one extremity of its longitudinal axis as in the previously described embodiment and, at the opposite end is provided with a head or handle 20.
  • This head or handle 20 in the embodiment illustrated, is of solid shallow cylindrical form and may conveniently be marked on each face to indicate the size of the belt delivery nip, provided by the tensor arm in conjunction with the fixed tensor.
  • each pair of slots 5a and 14a constitutes a seat for the tensor arm necks which constitute bearing means or portions.
  • the opposite side edges of the necks constitute first and second bearing means or seatings for cooperating selectively with the seats 5a and 14a to cause ;the bar to exert pressures of different. intensities on the belt.
  • a tensor arm for selectively supporting with pressures of different intensities the front end of a belt loop in a drafting apparatus having superposed co-operating belts laterally guided by cradle side plates having slots in the forward ends thereof provided with seats, said arm comprising a flat elongated bar having two longitudinally extending belt guide edges positioned substantially 180 degrees apart and a neck adjacent each end of the .bar and lying in substantially the same plane as the rear and laterally displaced with respect to the longitudinal axis of the bar and positioned laterally inwardly of said guide edges, each neck having opposite side edges positioned substantially 180 degrees apart and at different lateral distances from the longitudinal axis of the bar and from said guide edges and constituting seatings adapted to be selectively brought into seating engagement with the seats in the slots of the cradle side plates upon rotation of the bar through substantially 180 degrees about the longitudinal axis of the bar for selectively causing one guide edge of the bar to exert a pressure of one intensity on the belt and the other guide edge of the bar to exert a pressure
  • a tensor arm for selectively supporting with pressures of different intensities the front end of a belt loop in a drafting apparatus having superposed co-operating belts laterally guided by cradle side plates having slots in the forward ends thereof, said arm comprising a flat elongated bar having two longitudinally extending belt guide edges positioned substantially 180 degrees apart and a neck adjacent each end of the bar and lying in substantially the same plane as the bar and laterally ofiset with respect to the longitudinal axis of the bar and positioned laterally inwardly of said guide edges, each neck having opposite side edges positioned substantially 180 degrees apart and on opposite sides of and at different 1 distances from the longitudinal axis of the bar and at different distances from adjacent guide edges and constituting seatings adapted to be selectively brought into seating engagement with the bottoms of the slots in the cradle side plates upon rotation of the bar through substantially degrees about the longitudinal axis of the bar for selectively causing one of said guide edges to exert a pressure of one intensity on the belt and the other of said guide edges to exert

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US2777168D 1951-08-09 Noguera Expired - Lifetime US2777168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18801/51A GB698146A (en) 1951-08-09 1951-08-09 Improvements in or relating to drafting apparatus for textile fibres

Publications (1)

Publication Number Publication Date
US2777168A true US2777168A (en) 1957-01-15

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ID=10118656

Family Applications (1)

Application Number Title Priority Date Filing Date
US2777168D Expired - Lifetime US2777168A (en) 1951-08-09 Noguera

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US (1) US2777168A (nl)
FR (1) FR1064744A (nl)
GB (1) GB698146A (nl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125784A (en) * 1964-03-24 Macdonald
US3129467A (en) * 1962-11-29 1964-04-21 Progressive Engineering Inc Top roll cradle
US3310845A (en) * 1964-07-17 1967-03-28 Deering Milliken Res Corp Textile drafting arrangement
US3795946A (en) * 1972-08-17 1974-03-12 Deering Milliken Res Corp Drafting apparatus
US20220396900A1 (en) * 2021-06-10 2022-12-15 Saurer Spinning Solutions Gmbh & Co. Kg Top apron cradle for an apron drafting system of a textile machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB734388A (en) * 1953-06-01 1955-07-27 Casablancas High Draft Co Ltd Improvements in or relating to drafting apparatus for textile fibres
GB835300A (en) * 1957-05-02 1960-05-18 Casablancas High Draft Co Ltd Improvements in textile fibre drafting apparatus
US2942307A (en) * 1957-06-29 1960-06-28 Joh Jacob Rieter & Co Ltd Double apron drawing arrangement for spinning machines
DE1294276B (de) * 1964-02-14 1969-04-30 Maremont Corp Doppelriemchen-Streckwerk fuer Spinnmaschinen mit einstueckigem Riemchenkaefig
US3429010A (en) * 1964-08-19 1969-02-25 Goffredo Fusaroli Drawing device for textile fiber preparation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1765127A (en) * 1928-04-17 1930-06-17 Fernando Casablancas Fernando casablancas
US1917699A (en) * 1931-02-26 1933-07-11 Casablancas Fernando Drawing mechanisms for textile rovings
US2036318A (en) * 1933-08-01 1936-04-07 Casablancas Fernando Means of guiding the endless belts in the drawing apparatus for textile rovings
DE662001C (de) * 1938-07-02 Ernst Toenniessen Riemchenumlenkschiene fuer Einriemchenstreckwerke
US2206432A (en) * 1937-11-23 1940-07-02 Schofield John Mechanism for drawing fibers in textile machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE662001C (de) * 1938-07-02 Ernst Toenniessen Riemchenumlenkschiene fuer Einriemchenstreckwerke
US1765127A (en) * 1928-04-17 1930-06-17 Fernando Casablancas Fernando casablancas
US1917699A (en) * 1931-02-26 1933-07-11 Casablancas Fernando Drawing mechanisms for textile rovings
US2036318A (en) * 1933-08-01 1936-04-07 Casablancas Fernando Means of guiding the endless belts in the drawing apparatus for textile rovings
US2206432A (en) * 1937-11-23 1940-07-02 Schofield John Mechanism for drawing fibers in textile machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125784A (en) * 1964-03-24 Macdonald
US3129467A (en) * 1962-11-29 1964-04-21 Progressive Engineering Inc Top roll cradle
US3310845A (en) * 1964-07-17 1967-03-28 Deering Milliken Res Corp Textile drafting arrangement
US3795946A (en) * 1972-08-17 1974-03-12 Deering Milliken Res Corp Drafting apparatus
US20220396900A1 (en) * 2021-06-10 2022-12-15 Saurer Spinning Solutions Gmbh & Co. Kg Top apron cradle for an apron drafting system of a textile machine

Also Published As

Publication number Publication date
GB698146A (en) 1953-10-07
FR1064744A (nl) 1900-01-01

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