US2565228A - Drawing mechanism for spinning and roving frames - Google Patents

Drawing mechanism for spinning and roving frames Download PDF

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Publication number
US2565228A
US2565228A US47566A US4756648A US2565228A US 2565228 A US2565228 A US 2565228A US 47566 A US47566 A US 47566A US 4756648 A US4756648 A US 4756648A US 2565228 A US2565228 A US 2565228A
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US
United States
Prior art keywords
bar
roll
rolls
arm
weighting
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
US47566A
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English (en)
Inventor
Eugene C Gwaltney
Gordon C Anderson
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.)
Saco Lowell Shops
Original Assignee
Saco Lowell Shops
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 Saco Lowell Shops filed Critical Saco Lowell Shops
Priority to US47566A priority Critical patent/US2565228A/en
Priority to FR993596D priority patent/FR993596A/fr
Priority to GB21908/49A priority patent/GB668880A/en
Priority to CH281393D priority patent/CH281393A/fr
Application granted granted Critical
Publication of US2565228A publication Critical patent/US2565228A/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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
    • 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
    • D01H5/46—Loading arrangements
    • D01H5/50—Loading arrangements using springs
    • D01H5/505—Loading arrangements using springs for top roller arms

Definitions

  • This invention relates to drawing mechanisms of the type used in spinning and roving frames.
  • the orthodox three-roll drawing system which has been used in these machines from time out of mind, includes cap bars provided with slots in which the gudgeons of the top rolls rest, these slotted bars being intended to support the top rolls in accurate alignment with their respective cooperating bottom rolls.
  • the top rolls customarily include two bosses or shells, depending upon the type of roll used, and each of the shells or bosses is covered with a cot or roll cover of some suitable form for contact with the sliver being drafted. Weighting pressure is applied to the reduced or neck portions of the rolls which connect the two bosses or roll sections.
  • the present invention deals particularly with the foregoing considerations and it aims to devise a thoroughly satisfactory solution for them.
  • the invention is directed to devising a drawing mechanism for spinning and roving frames in which the cap bars will be eliminated, the weighting and top roll supporting devices will be combined, and suitable provision will be made for maintaining the top rolls in proper alignment with their respective bottom rolls.
  • Fig. 1 is a view, mainly in vertical section, showing a drafting mechanism embodying this invention
  • Fig. 2 is a front elevation, partly in section, of the top front roll of the mechanism shown in Fig. 1;
  • Fig. 3 is a side elevation of the upper portion of the mechanism shown in Fig. 1 but with a close spacing of the front and rear rolls;
  • Fig. 4 is a view showing a detail of the mounting of the rear top roll illustrated in Figs. 1 and 2;
  • Fig. 5 is a fragmentary view showing details of the fulcrum member and parts associated with it.
  • Figs. 1 and 2 the construction there shown comprises bottom front and rear rolls 2 and 3, respectively, top rolls 4 and 5 cooperating with said respective bottom rolls to perform the drafting operation, and an intermediate control mechanism including a bottom roll 5 driving an apron 1, the latter, being guided over an apron bar 8 and held stretched by a tensioning roll III.
  • This roll is controlled by the usual tension guide ll.
  • Resting on the apron I is a top roll I2, weighted by a spring-tensioned hook [3.
  • This specific organization of drafting elements is not of our invention and is here illustrated simply for convenience in disclosing a preferred embodiment of the present invention.
  • the top rolls shown in Figs. 1, 2 and 3, with which the present invention is mainly concerned, consists of the front and rear drawing rolls 4 and 5.
  • the front roll 4 comprises a roll housing l4 containing, in this particular form, two sets of needle bearings, one of which is shown at [5, supporting an arbor It on assume which are secured two roll bodies lI-l'l. They are set-screwed to the arbor so that they revolve therewith and each is covered with a cot it of some suitable form, thus providing two connected roll sections closely adJacent to each other and in coaxial relationship.
  • thrust washers one of which is shown at 20, are inserted between the opposite ends of the housing l4 and the respective roll bodies l1, and a packing 2! of felt, or the like, to hold a quantity of lubricant, is mounted in the space between the needle bearings.
  • the housing is of inverted T-shape and that the upwardly extending stem is drilled to fit freely on the end of a bar 22 which serves as a support for both the top rolls.
  • a set-screw 23 secures the front roll housing I4 releasably on the forward end of this bar.
  • the rear roll 5 preferably is constructed in the same manner as the front roll and includes a housing I4 essentially like that of the front roll. This housing, however, is mounted on the bar 22 for limited rocking movement but is adjustable lengthwise of the bar.
  • the supporting bar 22 for the rolls is itself supported in a weighting arm 24 of a bell crank lever which is fulcrumed on a rod 25 mounted in bearings supported on a series of roll stands, like that shown at 26, so that the lever can be swung from its normal position, as shown in Figs. 1 and 3, into an upward inoperative position.
  • the supporting connections between the bar 22 and arm 24 include a link 21, best shown in Fig. 2, slotted to receive a screw 28 by means of which it is fastened loosely to the forward end of the arm, this link also having a hole below the slot through which the bar 22 extends, the hole being materially larger than the bar as shown in Fig. 2.
  • the bar is secured to the arm somewhat loosely, as will later be described, by means of a pin 30, Fig. 1.
  • the weighting pressure is applied to the arm 24 in a manner disclosed in a pending application filed Jointly by one of these applicants with another, which application has since led to Patent No. 2,525,647.
  • It comprises a toggle mechanism including a link 3i pivoted on the bar 32 and a second link 32, in the form of a bolt, which is threaded through a middle pivot 34 connecting the two links.
  • a stron leaf spring 35 bears against the end of the link 22; is fastened at its opposite end to the lever by the pin 36; and is tensioned by a screw 31 bearing against an intermediate part of the spring. Secured rigidly to the link 3!
  • Fig. 1, preferably made in the form of a roll. supported on needle bearings B, Fig. 5, on the bar 22. Distribution of this pressure between the rolls 4 and I can be varied by adJusting this fulcrum lengthwise of the bar 22.
  • a collar 42, Figs. 2, 4 and 5 is slidably mounted on the bar 22 and can be locked in any ad- Justed position by the set screw 42 shown in its proper position in Fig. 3 and in an abnormal position in Fig. 1.
  • This collar has an interlocking connection with the fulcrum 4
  • both top rolls can rock around the axis of the bar 22 to adjust themselves evenly to their respective bottom rolls and to equalize the pressure of both cots of each top roll on the bosses of its bottom roll.
  • the unique mounting of the bar 22 is provided not only forthe purpose just described but, more importantly. in order to enable the top rolls automatically to remain in proper alignment with their respective bottom rolls. That is, we have found that if the top rolls are misaligned with reference to their bottom rolls, such misalignment will correct itself automatically if the mounting of the top rolls is such as to permit such correction. It is for this selfaligning purpose that the pivotal connection has been provided between the bar 22 and the pivot pin 30 at the rearward end of the bar.
  • This invention therefore, provides a drawing mechanism for spinning and roving frames in which the cap bars are eliminated, the weighting correctly aligned than the rear top roll because it revolves much faster and therefore feeds the sliver at a, higher speed. Also, the grist is much heavier under the rear roll.
  • the front roll also controls the alignment of the rear top roll. A slight overlap or overhang of the front top roll with reference to its bottom roll also is helpful in producing the self-aligning operation above described. That is, it is positioned slightly forward of the plane in which lies the axis of the bottom roll 2 and which is normal to the plane of the bites of the front and rear rolls.
  • Adjustment of the top roll 5 into cooperative relationship to its bottom roll 3 to accommodate a different length of staple is easily accomplished by loosening the set screw 43, Fig. 3, sliding the holder l4 along the bar 22 into its new position, and then tightening the set screw again.
  • a scale bar 44 is secured to the lower margin of the weight arm 24, this bar being graduated to show the distance between the transverse median plane of the fulcrum roll 4
  • a drawing mechanism for spinning and roving frames the combination with a plurality of pairs of top and bottom drawing rolls positioned to act successively on a sliver, a weighting arm mounted for swinging movements in a vertical plane toward and from a position overlying said bottom rolls, a bar supported in a generally paral: lel relationship to said arm, a member loosely connecting together the forward end of said bar with said arm, a plurality of holders mounted on said bar and supporting said respective top rolls, means operable on said arm to apply roll weighting pressure to it, and a fulcrum member interposed between said arm and said bar for transmitting the pressure of said arm through said bar to said top rolls.
  • a drawing mechanism for spinning and roving frames the combination with a plurality of pairs of top and bottom drawing rolls positioned to act successively on a silver, a weighting arm mounted for swinging movements in a vertical plane toward and from a position overlying said bottom rolls, a bar supported in a generally parallel relationship to said arm, said bar being mounted for lateral movement with respect to said arm, a plurality of holders mounted on said bar and supporting said respective top rolls, means operable on said arm to apply roll weighting pressure to it, and a fulcrum member interposed between said arm and said bar for transmitting the pressure of said arm through said bar to said top rolls.
  • a weighting arm mounted for swinging movements in a vertical plane toward and from a position overlying said bottom rolls.
  • a bar supported in a generally parallel relationship to said arm, a member loosely connecting together the forward end of said bar with said arm, a plurality of holders mounted on'said bar and supporting said respective top rolls, means operable on said arm to apply roll weighting pressure to it.
  • a fulcrum member interposed between said arm and said bar for transmitting the pressure of said arm'through said bar to said top rolls, said fulcrum .member being adjustable longitudinally of said bar to vary the distribution of the weighting pressure between said top rolls.
  • a drawing mechanism for spinning and roving frames the combination with a plurality of pairs of top and bottom drawing rolls positioned to act successively on a silver, a weighting arm mounted for swinging movements in a vertical plane toward and from a position overlying said bottom rolls, a bar supported in a generally parallel relationship to said arm, said bar being mounted for lateral movement with respect to said arm, a plurality of holders mounted on said bar and supporting said respective top rolls, means operable on said arm to apply roll weighting-pressure to it, and a fulcrum member interposed between said arm and said bar for transmitting the pressure of said arm through said bar to said top rolls, said fulcrum member being adjustable longitudinally of said bar to vary the distribution of the weighting pressure between said top rolls.
  • each of said holders provides a. bearing for, and located between, coaxial closely adjacent connected roll sections of a top roll.
  • a drawing mechanism for spinning and roving frames the combination with a plurality of pairs of top and bottom drawing rolls positioned to act successively on a sliver, a. weighting arm mounted for swinging movements in a vertical plane toward and from a position overlying said bottom rolls, a bar supported in a generally parallel relationship to said arm, said bar b61118 'pivotally mounted for lateral movement with reon said arm to apply roll weizhtinz pressure to it.
  • a fulcrum member interposed between said am and said bar for transmitting the pressure of said arm through said bar and holders to said front and rear top rolls, said fulcrum being adiustable longitudinally with respect to said bar to vary the distribution of the weiflhtinc preuure between said holders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US47566A 1948-09-03 1948-09-03 Drawing mechanism for spinning and roving frames Expired - Lifetime US2565228A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US47566A US2565228A (en) 1948-09-03 1948-09-03 Drawing mechanism for spinning and roving frames
FR993596D FR993596A (fr) 1948-09-03 1949-08-19 Mécanismes d'étirage pour métiers à filer
GB21908/49A GB668880A (en) 1948-09-03 1949-08-23 Improvements in drawing mechanisms for spinning and roving frames
CH281393D CH281393A (fr) 1948-09-03 1949-09-02 Mécanisme d'étirage pour métier à filer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47566A US2565228A (en) 1948-09-03 1948-09-03 Drawing mechanism for spinning and roving frames

Publications (1)

Publication Number Publication Date
US2565228A true US2565228A (en) 1951-08-21

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US47566A Expired - Lifetime US2565228A (en) 1948-09-03 1948-09-03 Drawing mechanism for spinning and roving frames

Country Status (4)

Country Link
US (1) US2565228A (fr)
CH (1) CH281393A (fr)
FR (1) FR993596A (fr)
GB (1) GB668880A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657434A (en) * 1951-10-20 1953-11-03 Saco Lowell Shops Drawing mechanism for spinning and roving frames
US2688162A (en) * 1950-10-25 1954-09-07 Estirajes Balmes S A Pressure mechanism for the rollers of spinning and like machines
US2696643A (en) * 1950-12-19 1954-12-14 F A Kumpers K G Drawing roller
US2721650A (en) * 1952-01-24 1955-10-25 American Cyanamid Co Pinch-roll assembly
US2771640A (en) * 1953-09-11 1956-11-27 Louis M Cotchett Top roll for spinning and roving frames
US2783505A (en) * 1955-06-27 1957-03-05 Spinnerei Karl Marx Veb Drawing frame for spinning machines
DE961066C (de) * 1952-04-13 1957-03-28 Wuertt Spindelfabrik G M B H Oberwalzen-Trag- und -Belastungsarm fuer Streckwerke an Spinnereimaschinen
US2787025A (en) * 1951-09-29 1957-04-02 Solanas Ramon Balmes Drawing mechanism for textile machines
US2834996A (en) * 1954-08-16 1958-05-20 Dixon Corp Saddle for spinning frame or the like
DE1054886B (de) * 1957-03-15 1959-04-09 Skf Kugellagerfabriken Gmbh Oberwalzen-Trag- und -Belastungsarm fuer Spinnereimaschinen-Streckwerke
US2924855A (en) * 1956-06-25 1960-02-16 Williams Weighting unit for fiber attenuating apparatus
DE974060C (de) * 1952-11-08 1960-09-08 Weller Maschf Heinz Oberriemchen-Streckwerk
US3126587A (en) * 1964-03-31 Apparaius
US4969238A (en) * 1988-11-05 1990-11-13 Zinser Textilmaschinen Gmbh Apparatus for selectively securing a carrier member of a textile drafting apparatus
US11879186B2 (en) * 2018-05-24 2024-01-23 Saurer Spinning Solutions Gmbh & Co. Kg Drafting system and drafting system unit for a spinning machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937816C (de) * 1952-06-16 1956-01-12 Casablancas High Draft Co Ltd Tragarm fuer die Oberwalzenzwillinge von Spinnmaschinen-Streckwerken
DE1026207B (de) * 1954-02-15 1958-03-13 Spintex Spinnerei Maschb G M B Vorrichtung zum Belasten der Oberwalzen von Streckwerken
DE1019941B (de) * 1955-07-15 1957-11-21 Spinnerei Karl Marx Veb Oberwalzentrag- und Belastungsarm fuer Spinnmaschinenstreckwerke
DE1143745B (de) * 1957-05-16 1963-02-14 Howa Machinery Ltd Verriegelung fuer einen hochschwenkbaren Trag- und Belastungsarm fuer die Ober-walzen an Spinnmaschinen-Streckwerken
DE1115625B (de) * 1958-12-06 1961-10-19 Skf Kugellagerfabriken Gmbh Streckwerk fuer Spinnereimaschinen
GB928921A (en) * 1959-09-03 1963-06-19 Sdruzeni Podniku Textilniho St An improved device for loading drawing mechanisms of spinning machines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1396122A (en) * 1921-05-28 1921-11-08 George O Lipe Drawing-roll mechanism for spinning-frames
US2246474A (en) * 1939-01-04 1941-06-17 Ver Kugellagerfabriken Ag Guiding arrangement for top weighting rolls
FR871451A (fr) * 1941-04-09 1942-04-27 Sachsische Textilmaschinenfabr Mécanisme étireur à cylindres supérieurs flottants
US2326979A (en) * 1939-11-24 1943-08-17 Guiding arrangement for top rolls
US2353338A (en) * 1941-03-29 1944-07-11 Joh Jacob Rieter & Cie Ag Draw frame
US2525647A (en) * 1948-08-18 1950-10-10 Saco Lowell Shops Weighting mechanism for textile drawing machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1396122A (en) * 1921-05-28 1921-11-08 George O Lipe Drawing-roll mechanism for spinning-frames
US2246474A (en) * 1939-01-04 1941-06-17 Ver Kugellagerfabriken Ag Guiding arrangement for top weighting rolls
US2326979A (en) * 1939-11-24 1943-08-17 Guiding arrangement for top rolls
US2353338A (en) * 1941-03-29 1944-07-11 Joh Jacob Rieter & Cie Ag Draw frame
FR871451A (fr) * 1941-04-09 1942-04-27 Sachsische Textilmaschinenfabr Mécanisme étireur à cylindres supérieurs flottants
US2525647A (en) * 1948-08-18 1950-10-10 Saco Lowell Shops Weighting mechanism for textile drawing machines

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126587A (en) * 1964-03-31 Apparaius
US2688162A (en) * 1950-10-25 1954-09-07 Estirajes Balmes S A Pressure mechanism for the rollers of spinning and like machines
US2696643A (en) * 1950-12-19 1954-12-14 F A Kumpers K G Drawing roller
US2787025A (en) * 1951-09-29 1957-04-02 Solanas Ramon Balmes Drawing mechanism for textile machines
US2657434A (en) * 1951-10-20 1953-11-03 Saco Lowell Shops Drawing mechanism for spinning and roving frames
US2721650A (en) * 1952-01-24 1955-10-25 American Cyanamid Co Pinch-roll assembly
DE961066C (de) * 1952-04-13 1957-03-28 Wuertt Spindelfabrik G M B H Oberwalzen-Trag- und -Belastungsarm fuer Streckwerke an Spinnereimaschinen
DE974060C (de) * 1952-11-08 1960-09-08 Weller Maschf Heinz Oberriemchen-Streckwerk
US2771640A (en) * 1953-09-11 1956-11-27 Louis M Cotchett Top roll for spinning and roving frames
US2834996A (en) * 1954-08-16 1958-05-20 Dixon Corp Saddle for spinning frame or the like
US2783505A (en) * 1955-06-27 1957-03-05 Spinnerei Karl Marx Veb Drawing frame for spinning machines
US2924855A (en) * 1956-06-25 1960-02-16 Williams Weighting unit for fiber attenuating apparatus
DE1054886B (de) * 1957-03-15 1959-04-09 Skf Kugellagerfabriken Gmbh Oberwalzen-Trag- und -Belastungsarm fuer Spinnereimaschinen-Streckwerke
US4969238A (en) * 1988-11-05 1990-11-13 Zinser Textilmaschinen Gmbh Apparatus for selectively securing a carrier member of a textile drafting apparatus
US11879186B2 (en) * 2018-05-24 2024-01-23 Saurer Spinning Solutions Gmbh & Co. Kg Drafting system and drafting system unit for a spinning machine

Also Published As

Publication number Publication date
CH281393A (fr) 1952-03-15
FR993596A (fr) 1951-11-02
GB668880A (en) 1952-03-26

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