US3007210A - Locking and lifting mechanism for the guide - Google Patents

Locking and lifting mechanism for the guide Download PDF

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Publication number
US3007210A
US3007210A US83962059A US3007210A US 3007210 A US3007210 A US 3007210A US 83962059 A US83962059 A US 83962059A US 3007210 A US3007210 A US 3007210A
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US
United States
Prior art keywords
guide
arm
positioning arm
positioning
arms
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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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Joh Jacob Rieter und Cie AG
Original Assignee
Joh Jacob Rieter und Cie AG
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Publication date
Application filed by Joh Jacob Rieter und Cie AG filed Critical Joh Jacob Rieter und Cie AG
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Publication of US3007210A publication Critical patent/US3007210A/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
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms

Definitions

  • the present invention relates to a locking and lifting mechanism for the guide arms of drafting arrangements of spinning machines.
  • the conventional long guide arms of the weighting mechanism for heavily weighting the top rolls of drafting arrangements require considerable force to be moved from the operating position to an idle position and for returning the guide arms from the idle position to the operating position and locking the guide arms in the operating position.
  • a positioning lever swingable on a stationary fulcrum between a locking position and a lifted position and connected by an intermediate element to the guide arm, also swingable on a stationary fulcrum has been proposed.
  • the intermediate element is pivotally connected to the guide arm and to the positioning arm whereby the pivot axes are so placed that they are in or somewhat beyond a dead center position when the arms are in operating position. With this arrangement the arms can be easily locked in the operating position and unlocked when it is desired to lift the arms to provide access to the drafting arrangement.
  • the conventional mechanisms have the disadvantage that they must be held in lifted position, for example, when a top roller must be removed from its saddle.
  • the present invention overcomes the aforesaid disadvantage by providing a locking and lifting mechanism which includes a positioning arm swingable on a stationary fulcrum between a locking and a lifted position.
  • a toggle joint connection is provided between this positioning arm and a guide arm which is also swingable on a stationary axis.
  • This toggle joint connection includes an intermediate link which is pivotally connected to the arms and which is in locking position when the guide arm is in operating position and the positioning arm is in locking position.
  • the pivotal connection between the link and one of the arms permits limited movement of the pivot axis towards and from the axis of the pivotal connection between the link and the other arm.
  • This limited movability makes it possible to provide a guide surface on the positioning arm cooperating with a follower element on the guide arm.
  • This guide surface includes a recess receiving the follower element to form a detent preventing relative movement of the guide arm and of the positioning arm when the latter is in fully lifted position so that the guide arm is held in lifted position as long as the positioning arm is
  • FIG. 1 is a part sectional side view of a drafting arrangement having a guide arm and a positioning arm connected according to the invention; the section appearing in FIG. 1 is made along line II in FIG. 2.
  • FIG. 3 is a large scale illustration of the portion shown in section in FIG. 1 with the arms in an intermediate position.
  • FIG. 4 illustrates the portion shown in section in FIG. '1 with the arms in fully lifted position whereby the guide arm is in the idle position.
  • FIG. 5 is a sectional side View of the rear portion of a modified mechanism according to the invention, the section being made along line V-V in FIG. 6.
  • FIG. 6 is a cross sectional view of the mechanism shown in FIG. 5, the section being made along line VI--VI in FIG. 5.
  • numeral 1 designates an attachment mounted on the roller stand 2 of a drafting arrangement.
  • a clamp element 4 is clamped to a rod 3 supported by the attachment 1.
  • the clamp element 4 can be released from the rod 3 by loosening a bolt 5.
  • a guide arm 7 having an inverted U-shaped cross sectional configuration is swingably connected to the clamp element 4 by means of a pin 9 extending through the flanges 8 of the arm 7 and through lugs 6 forming part of the clamp element 4.
  • Also swingably mounted by means of a pin 10 extending through the lugs 6 of the clamp element 4 is a positioning arm 11 having an inverted U-shaped cross sectional configuration and being placed above the guide arm 7.
  • the forward end 12 of the positioning arm all is slightly bent upward and is provided with a ball-shaped handle 13 extending somewhat beyond the forward end of the arm 7.
  • a pivot pin 14 is connected to the rear portion of the positioning arm 11.
  • the pin 14 extends through a slot 17 in a link 15 which is pivotally connected to the guide arm 7 by means of a transverse pin 16.
  • the longitudinal axis of the slot 17 coincides with the longitudinal axis of the link 15.
  • the pin 14 moves in the slot 17 when'the positioning arm 11 is lifted whereby the longitudinal axis of the slot 17 and of the link coincides with. the line connecting the axes of the pins 14 and 16.
  • Leaf springs 18 and 19 are inserted between the pins 14 and 16 on either side of the link v15 and tend to increase the distance between the pins 14 and 16.
  • a part circular recess 20 is provided at the rear ends of the flanges 11 and 11" of the positioning lever 11 which recess engages about 45 of the circumference of a follower bolt 21 when the positioning lever 11 is in fully lifted position and the guide arm 7 is also in lifted, ie. idle, position.
  • the bolt 21 connects the rear ends of the flanges of the guide arm 7 and has a diameter to effect the aforementioned extent of engagement between the detent 20 and the bolt 21.
  • the detent 20 continues into a little cam 22 which prevents undesired slipping of the bolt 21 out of the detent 20.
  • the cam portion 22 forms parts of a guide surface 23 which ends at the lower rear edges 24 of the flanges 11 and 11 of the positioning arm '11.
  • the device operates as follows:
  • the positioning arm 11 is lifted so that the pivot pin 14 is moved past dead center position and to the right end of the slot 17. Lifting is continued until the rear end of the lower edges 24 of the flanges of the.
  • the positioning arm 11 abut against the bolt 21.
  • the follower bolt 21 moves along the edges 24 upon continued swinging of the positioning arm 11 in clockwise direction whereby the guide arm 7 moves upward towards the positioning arm.
  • the distance between the pins 14 and 16 is thereby reduced against the action of the springs 18 and 19 and the pin 14 moves away from its right end position in the slot 17.
  • the bolt 21 moves along the guide surface 23 and into the part circular recess 20.
  • the springs 18 and 19 can now press the pin 14 to its far end position in the slot 17 so that the pivot axes of the pivotal connection are farthest apart (FIG. 4).
  • the positioning arm and the guide arm are now in the uppermost position and the latter is secured against undesired swinging away from the positioning arm in counterclockwise direction. This detent effect can be overcome by pulling down the positioning arm whereby the cam portion protuberance 22 presses against the bolt 21.
  • the guide 26, the cam 27 and the detent 28, corresponding to the guide 23, the cam 22 and the detent 20, respectively, in the embodiment according to FIGS. 1 to 4, form part of an intermediate element 29, i.e., they are arranged separate from the positioning lever 11.
  • the element 29 is connected to the arm 11 by means of pins 30 and 31, the former corresponding to the pin 14 in the device shown in FIGS. 1 to 4.
  • a pair of wire springs 34 and 35 is used instead of the leaf springs 18 and 19 and two relatively thin links 32 and 33 are provided in lieu of the link 15 of the device according to FIGS. 1 to 4.
  • the element 29 is easily detachable from the positioning arm 11 so that provision of a most favorable guide surface 26, 27, 28 is facilitated and the part forming the guide surface can be easily replaced.
  • a guide arm a stationary fulcrum swingably supporting said guide arm and affording swinging of the latter between an operating position and a lifted position
  • a positioning arm a stationary fulcrum swingably supporting said positioning arm and affording swinging of the latter between a locking position and a lifted position
  • a toggle joint connection between said arms said toggle joint connection including a link, a first pivotal connection between one of said arms and said link, a second pivotal connection between the second of said arms and said link, said toggle joint connection and said positioning arm being in looking position when said guide arm is in the operating position
  • cooperating detent means connected to both of said arms for positively holding said guide arm and said positioning arm in lifted position after placing said positioning arm in lifted position
  • said second pivotal connection including means permitting limited movement of the pivot axis thereof towards and from the pivot axis of the first pivot connection, during engagement and disengagement of said detent means.
  • said second pivotal connection includes a slot in said link, the longitudinal axis of said slot being substantially radial of the pivot axis of said first pivotal connection, and a pin rigidly connected to said second arm and extending through said slot.
  • each of said pivotal connections includes a pivot pin, resilient means being interposed between said pins tending to press said pins apart.
  • said detent means includes a surface portion on said positioning arm and a follower means on said guide arm, said follower means being engaged by said surface portion when said positioning arm is lifted and the pivot axes of said pivotal connections are farthest apart.
  • said guide portion having a recess which is complementary to said follower means and which is engaged by the latter after movement of said protuberance past said follower means.
  • said detent means includes an element detachably connected to said positioning arm and having a surface portion, and a follower means on said guide arm, said follower means being engaged by said surface portion when said positioning arm is lifted and the pivot axes of said pivotal connections are farthest apart.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US83962059 1958-09-20 1959-09-14 Locking and lifting mechanism for the guide Expired - Lifetime US3007210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6418858A CH364440A (de) 1958-09-20 1958-09-20 Vorrichtung zum Verriegeln und Abheben der Führungsarme an Streckwerken, insbesondere von Spinnereimaschinen

Publications (1)

Publication Number Publication Date
US3007210A true US3007210A (en) 1961-11-07

Family

ID=4525488

Family Applications (1)

Application Number Title Priority Date Filing Date
US83962059 Expired - Lifetime US3007210A (en) 1958-09-20 1959-09-14 Locking and lifting mechanism for the guide

Country Status (5)

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US (1) US3007210A (en(2012))
CH (1) CH364440A (en(2012))
DE (1) DE1130740B (en(2012))
FR (1) FR1238539A (en(2012))
GB (1) GB923549A (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376611A (en) * 1966-05-17 1968-04-09 Warner Swasey Co Textile apparatus
US5035027A (en) * 1989-02-11 1991-07-30 Zinser Textilmaschinen Gmbh Means for manipulating a drafting roller carrier of a textile machine
US20050219840A1 (en) * 2004-03-30 2005-10-06 Holder Ronald G Apparatus and method for improved illumination area fill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902859A1 (de) * 1989-02-01 1990-08-09 Skf Textilmasch Komponenten Oberwalzentrag- und -belastungsarm fuer spinnereimaschinen-streckwerke

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2353338A (en) * 1941-03-29 1944-07-11 Joh Jacob Rieter & Cie Ag Draw frame
US2508964A (en) * 1947-03-19 1950-05-23 Rieter Joh Jacob & Cie Ag Naegeli
US2865056A (en) * 1956-01-04 1958-12-23 Skf Kugellagerfabriken Gmbh Textile drawing mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071548B (en(2012)) 1959-12-17
US2813308A (en) * 1955-07-11 1957-11-19 Medley Mfg Company Inc Overarm for fiber attenuating apparatus
CH344657A (de) 1956-06-20 1960-02-15 Rieter Joh Jacob & Cie Ag Streckwerk für eine Spinnereimaschine mit einer Verriegelungs- und Abhebevorrichtung für den Führungsarm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2353338A (en) * 1941-03-29 1944-07-11 Joh Jacob Rieter & Cie Ag Draw frame
US2508964A (en) * 1947-03-19 1950-05-23 Rieter Joh Jacob & Cie Ag Naegeli
US2865056A (en) * 1956-01-04 1958-12-23 Skf Kugellagerfabriken Gmbh Textile drawing mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376611A (en) * 1966-05-17 1968-04-09 Warner Swasey Co Textile apparatus
US5035027A (en) * 1989-02-11 1991-07-30 Zinser Textilmaschinen Gmbh Means for manipulating a drafting roller carrier of a textile machine
US20050219840A1 (en) * 2004-03-30 2005-10-06 Holder Ronald G Apparatus and method for improved illumination area fill

Also Published As

Publication number Publication date
DE1130740B (de) 1962-05-30
GB923549A (en(2012)) 1963-04-10
FR1238539A (en(2012)) 1960-07-04
CH364440A (de) 1962-09-15

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