US2917786A - Daosch - Google Patents

Daosch Download PDF

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Publication number
US2917786A
US2917786A US72279258A US2917786A US 2917786 A US2917786 A US 2917786A US 72279258 A US72279258 A US 72279258A US 2917786 A US2917786 A US 2917786A
Authority
US
United States
Prior art keywords
bracket
arm
rolls
supporting bar
portions
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
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English (en)
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.)
SKF GmbH
Original Assignee
SKF Kugellagerfabriken GmbH
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 SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Application granted granted Critical
Publication of US2917786A publication Critical patent/US2917786A/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
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms

Definitions

  • top roll carrier-and-weighting arm which is pivotally articulated to a bracket, is provided with rigid saddleshaped holders for twin top rolls, it is necessary to secure and, t
  • brackets on the supporting bar in such a manner that the axes of the twin toprolls are parallel with those of the bottom rolls.
  • this object is achieved by arranging that the bracket is divided substantially parallel to the plane of the drafting field in such a manner that the lower portion, which is secured to the supporting bar, is held against lateral swinging movement, and the upper portion, which carries the top roll carricrarm, is so connected to the lower portion as to be able to swing laterally.
  • This arrangement renders a construction of the top roll carrier arm possible which is resistant to mechanical stresses and ensures a reliable and accurate alignment of the top rolls with the bottom rolls with their axes parallel, even if the setting of the bracket on the supporting bar deviates widely from the normal position.
  • the mounting of the brackets on the supporting bar can be effected quickly, without complicated adjustment, because the top roll carrier arm quickly aligns itself automatically to the correct position.
  • bearings for accommodating the swinging movement may be arranged between the upper and lower portions of the bracket, which bearings are situated substantially on the level of the axes of the top rolls when in the operating position.
  • the bearings preferably consist of rolling bodies received between thrust plates.
  • the thrust plates may either be formed integral with the bracket portions or as additional plates secured to holding surfaces on the bracket portions. It is advantageous to form the holding surfaces by slots in the bracket portions or by lugs bent from the bracket portions.
  • the swinging movement of the carrier arm may take place about a point which may conveniently be formed by a bearing ball, the carrier arm resting on a further bearing.
  • This bearing may be formed in such a manner that it permits a movement of the carrier arm substantially only in a plane parallel to theplane of the drafting field. It is convenient to arrange that a web, which connects the sides of the upper bracket portion carrying the top roll carrier arm, is constructed in the form of a thrust plate with a bearing point on which latter the ends of the sides of the lower bracket portion, secured to the supporting bar, rest with point or line contact.
  • Figure 1 shows a drafting mechanism with a top roll carrier arm partially in elevation and partially in longitudinal section
  • Figure 2 is a section on the line 2-2 in Figure 1;
  • Figure 3 is a section on the line 3-3 in Figure l.
  • Fig. 4 is a side elevational view on a reduced scale of the drafting mechanism.
  • a bracket is secured in the usual manner by means of a tightening bolt 2 to a supporting bar 1 which extends along a drafting machine.
  • the bracket consists of two portions 3 and 4 which are each bent substantially into the cross-sectional form of a U, the upper portion receiving a pivot pin 5 for the pivotal mounting of a top roll carrier arm 6, which can be locked, in the operating position, by means of a releasable latching device 6', to the upper portion 4 of the bracket.
  • the carrier arm a carries weighted top rolls 7 which co-operate with bottom rolls 9, and the relative distance between the top rolls 7 can be altered by displacement of their respective carrier rails 8.
  • bracket portions 3 and 4 overlap adjacent to the top rolls 7, and a thrust plate is received in recesses 11 in the portion 4 and extends through slots 12 in the portion 3.
  • the ends 3 of the sides of the portion 3 are bent over to engage around a thrust plate 13.
  • balls 15. Arranged between the plate 16 and the plate 13 are balls 15. which are guided by a cage 14 and which roll on the plate 10 in the event of the arm 6 swinging laterally.
  • the ends 3 of the sides of the portion 3 are brought close together and, if necessary, secured together.
  • the portion 4 is covered by a fitting 20 of sheet metal or the like, in the form of a hood which extends over part of the portion 3 and forms part of the carrier arm. At its rear end, the fitting 20 carries a spring 21 which engages the plate 18 and web 4' when the arm 6 is raised and thus locates the arm 6 in its upper, inoperative, position, as shown in broken lines in Fig. 1.
  • the mounting of the drafting mechanism is effected in such a manner that the portion 3 is secured by means of the bolt 2 to the supporting bar 1, precise right-angled adjustment in relation to the supporting bar being unnecessary.
  • the portions 3 and 4 form a unit, the portion 4 receiving the carrier arm 6 to pivot on the bolt 5.
  • the mode of operation in service is as follows: After the carrier arm 6 has been swung down towards the bottom rolls 9 and locked to the portion 4, and if necessary also to another part of the machine, automatic lateral swinging to settle into position takes place about the bearing point formed by the ball 17. In the course of this, the balls 15 roll on the plate 10 and transmit the pressure of the usual springs 7' which weight the top rolls 7, see Fig. 1, through the plate 13 to the portion 3 on the supporting bar 1.
  • the embodiment illustrated is only an example of the invention which is not restricted thereto. Instead, many modifications and alterations are possible. This applies both to the mounting of the thrust plates on the portions 3 and 4 of the bracket and to the form and arrangement of the bearings.
  • the thrust plates may be integral wtih the bracket portions.
  • textile drafting mechanism of the type comprising top and bottom rolls, a supporting arm for the top rolls adapted to be raised and lowered from and into operative position and self-adjustable laterally when in said position, means for releasably locking the arm in the operating position, and a bracket on which the said arm is mounted, said mechanism being characterized by the fact that the said bracket is divided into upper and lower portions with means for uniting said portions affording freedom for relative self-adjustment thereof in a plane substantially parallel to the drafting field defined by the upper and lower rolls about a pivot normal to said plane, the lower portion of the bracket being relatively fixed, and means for mounting the said roll-supporting arm on the upper relatively movable portion of the bracket.
  • a drafting mechanism as claimed in claim 1 including bearings between the upper and lower portions of the bracket to accommodate said relative movement, said bearings being arranged substantially on the level of the axes of the top rolls when the latter are in the operating position.
  • a drafting mechanism as claimed in claim 4 wherein the thrust plates for said pivot hearing are carried respectively by the bracket portions, and wherein the said lower portion of the bracket has an extension which overlies and vertically confines the thrust plate of the upper bracket portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US72279258 1957-03-23 1958-03-20 Daosch Expired - Lifetime US2917786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES52838A DE1029273B (de) 1957-03-23 1957-03-23 Stuetze fuer Oberwalzentrag- und -belastungsarme fuer Streckwerke an Spinnereimaschinen

Publications (1)

Publication Number Publication Date
US2917786A true US2917786A (en) 1959-12-22

Family

ID=7488953

Family Applications (1)

Application Number Title Priority Date Filing Date
US72279258 Expired - Lifetime US2917786A (en) 1957-03-23 1958-03-20 Daosch

Country Status (8)

Country Link
US (1) US2917786A (ko)
BE (1) BE565676A (ko)
CH (1) CH361512A (ko)
CY (1) CY311A (ko)
DE (1) DE1029273B (ko)
FR (1) FR1193522A (ko)
GB (1) GB827498A (ko)
NL (1) NL102764C (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200446A (en) * 1962-01-19 1965-08-17 Skf Kugellagerfabriken Gmbh Lockable top roller arrangement for a textile drawing mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914578B2 (ja) * 1975-12-26 1984-04-05 エヌ テ− エヌトウヨウベアリング カブシキガイシヤ ペンヂユラム ア−ムシキコウカンドジドウチヨウシンカジユウワンコウゾウ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246474A (en) * 1939-01-04 1941-06-17 Ver Kugellagerfabriken Ag Guiding arrangement for top weighting rolls
US2657434A (en) * 1951-10-20 1953-11-03 Saco Lowell Shops Drawing mechanism for spinning and roving frames
US2675587A (en) * 1949-09-23 1954-04-20 Ver Kugellagerfabriken Ag Device for supporting and weighting the top rolls of drawing mechanisms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246474A (en) * 1939-01-04 1941-06-17 Ver Kugellagerfabriken Ag Guiding arrangement for top weighting rolls
US2675587A (en) * 1949-09-23 1954-04-20 Ver Kugellagerfabriken Ag Device for supporting and weighting the top rolls of drawing mechanisms
US2657434A (en) * 1951-10-20 1953-11-03 Saco Lowell Shops Drawing mechanism for spinning and roving frames

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200446A (en) * 1962-01-19 1965-08-17 Skf Kugellagerfabriken Gmbh Lockable top roller arrangement for a textile drawing mechanism

Also Published As

Publication number Publication date
GB827498A (ko) 1960-02-03
NL102764C (ko) 1962-10-15
DE1029273B (de) 1958-04-30
BE565676A (ko) 1960-07-15
CY311A (en) 1965-03-16
CH361512A (de) 1962-04-15
FR1193522A (ko) 1959-11-03

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