US2793400A - Drafting mechanism for textile machines - Google Patents

Drafting mechanism for textile machines Download PDF

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Publication number
US2793400A
US2793400A US367871A US36787153A US2793400A US 2793400 A US2793400 A US 2793400A US 367871 A US367871 A US 367871A US 36787153 A US36787153 A US 36787153A US 2793400 A US2793400 A US 2793400A
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US
United States
Prior art keywords
pressure
bracket
rollers
space
drafting
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
US367871A
Other languages
English (en)
Inventor
Kempe Erhard Balduin
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 US2793400A publication Critical patent/US2793400A/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
    • D01H5/46—Loading arrangements
    • D01H5/52—Loading arrangements using fluid pressure
    • D01H5/525—Loading arrangements using fluid pressure for top roller arms

Definitions

  • the invention relates to a drafting mechanism for textile machines with a bracket arranged above the top weighting rollers and with hydraulic or pneumatic loading of the top Weighting rollers.
  • the loading required for the pressure at the roller nip between the top rollers is obtained by suitable arrangements of weights or springs the power of which generally is transmitted to the top Weighting rollers by mean of a lever mechanism or the like.
  • hydraulic pressure agents are used for the loading of the top weighting rollers, i. e. an elastic tube containing the pressure transmission agent is arranged in a tubular carrier for the top roll brackets, which tube act on a lever mechanism transmitting the pressure to the top weighting rollers.
  • One of the objects of the present invention i to provide a structure capable of overcoming all of the above drawbacks and meeting all of the above requirements.
  • a further object of the present invention is to provide an exceedingly simple means for effectively loading top rolls with the force of a fluid under pressure.
  • Another object of the present invention is to provide a simple means for adjusting the load of the top rolls.
  • Fig. 1 shows a top roll loading device, designed according to the invention, for drafting mechanisms in spinning machines, in which the enclosed space containing the pressure transmitting agent is connected with a not shown power source by means of a feed line, and which is pivotally arranged on a supporting rod, and which can be locked in a certain operating position;
  • Fig. 2 shows a device similar to Fig. l with said enclosed space closed all round, and with an adjusting pin for accurate pressure adjustment. 7
  • the holding part 22 is a clamping piece embracing the bracket.
  • the bracket '20 has a U-shaped cross section and is provided with an enclosed space 24 containing the pressure agent, which space is being formed by an elastic tube 25. This tube is embraced by' the three sides of the U-shaped cross section of the bracket 20, and bears against the inner surface of the bracket. The open bottom surface of the bracket is closed by the clastically deformable tube. Clamping pieces 23 are adjustably arranged on the bracket 20.
  • a shaped part 30 is pivotally arranged, supporting on its one straight side part of the elastic tube, and on its other straight side the top surface 13 of the holding or guide elements of the top weighting roller 12.
  • a pressure transmitting agent e. g. air, oil or the like
  • space 24 extending over all the top weighting rollers parallel to the drafting field, as shown in the drawing, that part of the elastically deformable tube 25 exposed to the outside, under pressure will come to lie against the shaped members 30 and the pressure will be transmitted via the holding parts 12 to the top weighting rollers 11. Due to the fact that the straight part of the shaped member 30 is larger than the top surface 13 of the holding part 12, it will be possible without further ado to adjust holding parts of the top weighting rollers according to the roller setting desired.
  • the pressure at the roller nip can be augmented by increasing the pressure in space 24.
  • a connecting piece 28 is arranged at one end of the oblong space 24, and connected with an elastic tube 40.
  • This tube leads to a compressor, an oil pump or the like, not shown in the drawing, serving to press the pressure transmitting agent into space 24.
  • a faucet 28a preferably a three-way cock, is arranged in order to eventually connect the feed line with the space, or to cut off the feed line, or in order to reduce the space 24 by discharging the pressure agent after removal of the feed line.
  • the bracket 20 with the space 24, the tube 25, the clamping piece 23 and the shaped members 30 can be held in a fixed position parallel in line with the drafting field by means of a locking device 27 but vaguely shown in Fig. 1.
  • the bottom part of the bracket 20 is closed by a sheet metal protective cover 29.
  • This protective cover 20 is provided with holes 29a through which the holding elements 12 pass which behind the protective cover bear against the shaped members 30.
  • Fig. 2 The design according to Fig. 2 is essentially the same as that shown in Fig. 1. To simplify matters, the locking device 27 is not shown.
  • the space 24 at its one end is provided with an inlet closed by a set screw 41 projecting into space 24.
  • a pressure regulating device may also be arranged at some other part of the bracket and the space 24 with the tube 25.
  • a drafting mechanism for textile machines comprising in combination spaced bottom rollers; top weighting rollers,-paired with said bottom rollers; holder and guide elements for each of said top Weighting rollers; a bracket, arranged above said top weighting rollers and provided with a locking device; an enclosure defining an enclosed space containing a pressure transmitting agent for the loading of said top weighting rollers, said enclosure being located between said bracket and said holder and guide element and said enclosed space being connected by means of a feed pipe with a pressure supply unit suitably arranged without the drafting mechanism; shaped members respectively having straight portions arranged between the surface of said enclosure and the top surfaces of said top roll holder and guide elements, respectively, the top surfaces of said straight portions of said shaped member bearing against an at least in part elastically deformable surface of said enclosure and the bottom surface of said straight portions of said shaped members bearing respectively against the corresponding top surfaces of said top roll holder and guide elements.
  • a drafting mechanism for textile machines comprising in combination spaced bottom rollers; top weighting rollers, paired with said bottom rollers; means including holder and guide elements for said top weighting rollers, respectively, for transmitting a load to the latter; a bracket of substantially U-shaped cross section having an open bottom, arranged above said top weighting rollers and provided with a locking device; an enclosure defining an enclosed space, containing a fluid under pressure for the loading of said top weighting rollers, said enclosure being located between said bracket and said holder and guide elements and said U-shaped bracket embracing said enclosure at least on three sides while the side adjacent to the top rolls is at least in part elastically deformable and bears against said means; and a cover covering the open bottom of said bracket and formed wtih openings through which said holder and guide elements respectively extend.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US367871A 1952-07-16 1953-07-14 Drafting mechanism for textile machines Expired - Lifetime US2793400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE320260X 1952-07-16

Publications (1)

Publication Number Publication Date
US2793400A true US2793400A (en) 1957-05-28

Family

ID=6154043

Family Applications (1)

Application Number Title Priority Date Filing Date
US367871A Expired - Lifetime US2793400A (en) 1952-07-16 1953-07-14 Drafting mechanism for textile machines

Country Status (5)

Country Link
US (1) US2793400A (en, 2012)
BE (1) BE521487A (en, 2012)
CH (1) CH320260A (en, 2012)
FR (1) FR1087856A (en, 2012)
NL (1) NL80664C (en, 2012)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971226A (en) * 1956-02-15 1961-02-14 Joh Jacob Rieter & Co Ltd Loading device for drafting arrangements
DE1113755B (de) * 1951-09-29 1961-09-14 Fansteel Metallurgical Corp Elektrolytkondensator
US3225392A (en) * 1961-05-13 1965-12-28 Skf Kugellagerfabriken Gmbh Drawing mechanism for a spinning machine
US4112548A (en) * 1975-09-23 1978-09-12 Joseph Sauvage Drafting machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315813A (en) * 1940-01-15 1943-04-06 Rieter Joh Jacob & Cie Ag Weighting device
US2384250A (en) * 1940-01-15 1945-09-04 Weighting device
US2508964A (en) * 1947-03-19 1950-05-23 Rieter Joh Jacob & Cie Ag Naegeli
US2624077A (en) * 1949-09-17 1953-01-06 Stevens & Co Inc J P Drafting frame

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315813A (en) * 1940-01-15 1943-04-06 Rieter Joh Jacob & Cie Ag Weighting device
US2384250A (en) * 1940-01-15 1945-09-04 Weighting device
US2508964A (en) * 1947-03-19 1950-05-23 Rieter Joh Jacob & Cie Ag Naegeli
US2624077A (en) * 1949-09-17 1953-01-06 Stevens & Co Inc J P Drafting frame

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113755B (de) * 1951-09-29 1961-09-14 Fansteel Metallurgical Corp Elektrolytkondensator
US2971226A (en) * 1956-02-15 1961-02-14 Joh Jacob Rieter & Co Ltd Loading device for drafting arrangements
US3225392A (en) * 1961-05-13 1965-12-28 Skf Kugellagerfabriken Gmbh Drawing mechanism for a spinning machine
US4112548A (en) * 1975-09-23 1978-09-12 Joseph Sauvage Drafting machine

Also Published As

Publication number Publication date
NL80664C (en, 2012)
CH320260A (de) 1957-03-31
BE521487A (en, 2012)
FR1087856A (fr) 1955-03-01

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