US3733644A - Scraper member for drafting system - Google Patents

Scraper member for drafting system Download PDF

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Publication number
US3733644A
US3733644A US00163174A US3733644DA US3733644A US 3733644 A US3733644 A US 3733644A US 00163174 A US00163174 A US 00163174A US 3733644D A US3733644D A US 3733644DA US 3733644 A US3733644 A US 3733644A
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United States
Prior art keywords
scraper
roll
scraper member
cam
shaped member
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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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US00163174A
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English (en)
Inventor
G Sanders
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Milliken Research Corp
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Milliken Research Corp
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Publication date
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Publication of US3733644A publication Critical patent/US3733644A/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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/62—Non-rotary cleaning pads or plates; Scrapers

Definitions

  • Marden 57 ABSTRACT An intermittently actuated scraper member for one of the front rolls of a drafting system to scrape lint from such roll to prevent the accumulation of lint, trash, etc., thereon, thereby eliminating the cause of lap ups on such roll.
  • the disclosed invention is directed to a device to prevent the accumulation of lint, trash, etc., on the rolls of a drafting system which causes the occurrence of a lap up or an ends down.
  • Another object of the invention is to provide an efficient, inexpensive device to clean the lint, trash, etc., off of at least one roll of a drafting system to prevent the build up of fibers thereon.
  • FIG. 1 represents a cross-sectional schematic view of the new and improved drafting system
  • FIG. 2 is a view similar to FIG. 1 showing the scraper being raised relative to the top front roll;
  • FIG. 3 is a top view of the lower middle roll of the drafting system with the top rolls removed;
  • FIG. 4 shows the scraper member per se
  • FIGS. 5-7 show various scraper modifications
  • FIG. 8 illustrates a modification of the top roll clearer shown in FIGS. 1-7.
  • a running mass of staple fibers F is passed in conventional manner successively between pairs of drafting rolls 10, 12, 14, 16, 18 and 20 with each of the middle pair of rolls 14 and 16 having an endless fiber control apron 22 thereabout. From the nip of front drafting rolls 18 and 20, the fiber F is twisted and taken up by a conventional ring and traveler bobbin spinning system (not shown).
  • a front roll lap occurs when fibers being drafted wrap around either of the rolls 18 or 20 causing the yarn end 24 to come down and in extreme cases, cause damage to the drafting apron 22 and the drafting cradle 26. Normally, a few fibers will lap the roll and then more and more accumulate and wrap around the roll to form the lap. To prevent this condition from occurring a scraper member 28 is provided in engagement with the top front roll 18.
  • the scraper member 28 is preferably molded from those plastics which are readily moldable and which have good stability and wear characteristics, such as for instance, Delrin acetal resin, nylon and Bakelite.
  • the scraper 28 is molded with three projections 30 and a cavity which has three corresponding elongated finger positions 32 which extend longitudinally through the scraper.
  • the scraper member 28 is held in position by a U- shaped wire member 34 which has inturned projections 36 which are inserted in holes 38 in the side walls 40 of the cradle 26 to pivotally mount the scraper 28.
  • the bottom portion 42 of the U-shaped wire member 34 extends through the cavity of the scraper.
  • a cam follower portion 44 Welded or otherwise secured to the wire member 34 is a cam follower portion 44 which extends outwardly and downwardly from the wire member for reasons hereinafter explained.
  • cam member 46 Snapped onto' the lower middle roll between two drafting positions is a cam member 46.
  • the cam member 46 has a diameter slightly less than the diameter of roll 16 to insure a snug fit so that the cam member 46 will rotate with the roll 16. It should be noted that the cam member is thicker in the middle than at the ends to insure proper contact with the cam follower portion 44.
  • the cam 46 rotates with the middle lower roll 16. Upon each rotation of the roll 16, the cam 46 will rotate in the position shown in FIG. 2 and engage the cam follower 44 causing it to rotate in the clockwise direction. Rotation of the cam follower 44 in the clockwise direction will cause the wire member 34 to pivot in this direction. Pivotal movement of the wire member 34 causes the wire member 42 to raise up and engage the upper side of the elongated finger portion 32. As the wire member continues to pivot upwardly the scraper member 28 will rise upwardly away from the roll 18.
  • the scraper member will rotate in the clockwise direction since the inward projections 36 act against the bottom of the finger portion 32 like an eccentric shaft and the weight of the scraper member 28 will cause it to rotate as indicated in FIG. 2.
  • the scraper member 28 rotates in a direction opposite to the rotation of the top front roll 18 the front edge of the projection 30 will scrape lint, trash, etc., from the surface of the roll.
  • the wire member 34 reaches the extreme upward position the scraper 28, preferably, will be lifted off the roll slightly to allow the dislodged lint, trash, etc., to fall off the roll.
  • the scraper member 28 will be lowered onto the roll 18 once again with two adjacent edges of two adjacent projections 30 resting on the roll.
  • the portion 42 will move downwardly to the centerline position of the scraper member 28 whereat the rotation of the roll 18 will cause the scraper member 28 to be moved to the position shown in FIG. 1 wherein the bottom of the finger portion 32 engages the wire member portion 42 ready for another cycle. Since the middle lower roll rotates continuously, it is obvious that the cam 46 will continuously raise and lower the scraper member 28 to allow the scraped lint, trash, etc., to fall away from the drafting area. It should be noted that the scraper 28 will scrape the roll in the position shown in FIG. 1 as well as when it has been lifted to the position shown in FIG. 2.
  • FIGS. 5-7 show various configurations and shapes of the scraper member 28.
  • FIG. 5 shows the projection 30 with a convex surface while
  • FIG. 6 shows the projections 30 with a concave surface which will conform to the radius of curvature of the roll 18.
  • FIG. 7 illustrates a projection 30 which has a flat surface.
  • FIG. 8 shows a modification of the top roll clearer shown in FIGS. 1-7, except, preferably, this clearer is molded from a suitable plastic such as that used for the scraper member 28.
  • this clearer is molded from a suitable plastic such as that used for the scraper member 28.
  • the scraper member 28 will be used to scrape the lint, trash off the top front roll of the drafting system.
  • the top roll clearer of FIG. 8 is generally similar to that of FIGS. 1-7 in that pins 50 are molded to the arms 52 and 54 and are inserted in holes 38 of the cradle 26 to pivotally mount the scraper 28 (not shown in FIG. 8). Molded to the front inside portion of the arms 52 and 54 are pins 56 which project into the hollow interior of the scraper member 28 to hold the scraper member 28 in operative position on the top front roll 18 of the drafting system. To hold the arms 52 and 54 in a fixed spaced relationship a support bar 58 is molded thereto. At the end of the curved portions 60 of the arms 52 and 54 are molded cam followers 62 which when engaged by the cam will pivot the top roll clearer upward. There are two cam followers 62 so that, depending on the particular spinning frame, the actuating cam can be located on one side or the other of the drafting system.
  • the herein disclosed improved drafting system provides for continuous cleaning of the drafting rolls of a drafting system to prevent the build up of fibers, trash, etc., to eliminate or alleviate the possibility of a lap up.
  • the improved drafting system is simple in construction and can be provided with a minimum amount of capital expenditure per spindle.
  • a scraper for a textile handling system comprising: a scraper member having at least one projection thereon, a cavity in said scraper member, a U-shaped member having a closed end and two open ends, said two open ends having pin members connected thereto extending inwardly towards one another and engaging said cavity in said scraper member and a cam follower means operably associated with said U-shaped member for engagement by a cam.
  • cam follower means includes arm members connected to and extending from said U-shaped member in a direction away from the open ends of said U-shaped member and having a cam follower connected to the end of at least one of said arm members.
  • a scraper for a textile handling system comprising: a scraper member having at least one projection thereon, a cavity in said scraper member, a U-shaped member having a closed end and two open ends, said cavity in said scraper member extending through said scraper member, said closed end of said U-shaped member being located in said cavity and a cam follower means operably associated with said U-shaped member for engagement by a cam, said open ends of said U- shaped member being turned inwardly towards each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00163174A 1971-07-16 1971-07-16 Scraper member for drafting system Expired - Lifetime US3733644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16317471A 1971-07-16 1971-07-16

Publications (1)

Publication Number Publication Date
US3733644A true US3733644A (en) 1973-05-22

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Application Number Title Priority Date Filing Date
US00163174A Expired - Lifetime US3733644A (en) 1971-07-16 1971-07-16 Scraper member for drafting system

Country Status (11)

Country Link
US (1) US3733644A (xx)
BE (1) BE774612R (xx)
CA (1) CA933739A (xx)
CH (1) CH560256A5 (xx)
DE (1) DE2155913C3 (xx)
FR (1) FR2146191B2 (xx)
GB (1) GB1391729A (xx)
IT (1) IT989619B (xx)
LU (1) LU64326A1 (xx)
NL (1) NL7114657A (xx)
ZA (1) ZA717245B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000626A (en) * 1988-12-22 1991-03-19 Gte Valenite Corporation Cutting insert for low ranges of feed and depth of cut
US20150040355A1 (en) * 2013-08-12 2015-02-12 Kabushiki Kaisha Toyota Jidoshokki Cleaner for fiber bundle feeder in fore-spinning frame

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931123A1 (de) * 1989-09-18 1991-03-28 Zinser Textilmaschinen Gmbh Vorrichtung zum entfernen von wickeln an streckwerkswalzen
DE102011113367A1 (de) * 2011-09-15 2013-03-21 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Strecke, Karde, Kämmermaschine o.dgl. mit einem Streckwerk
CH711549A1 (en) * 2015-09-18 2017-03-31 Rieter Ag Maschf Cleaning device for a compacting device.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190103316A (en) * 1901-02-15 1901-03-30 Malcom Macgregor Greeves Improvements in Apparatus for Scraping or Clearing the Drawing Rollers of Frames for Preparing Flax or other Fibrous Material.
GB190419007A (en) * 1904-09-03 1904-11-24 Thomas Barbour Improvements in Preparing Machinery for Flax, Hemp, and similar Fibres.
US2382214A (en) * 1944-10-14 1945-08-14 Whitin Machine Works Clearer for roving or spinning frames
DE817710C (de) * 1949-08-20 1951-10-18 Franz Herbrich Putzvorrichtung fuer die Riffel- oder Druckzylinder in Streckwerken von Spinnereimaschinen
GB872939A (en) * 1958-12-09 1961-07-12 Ferdinand Reiterer Improvements in devices for cleaning rollers, more particularly for textile machines
DE1266190B (de) * 1962-10-25 1968-04-11 Schubert & Salzer Maschinen Vorrichtung zum mechanisch- pneumatischen Reinigen von Ober- und Unterwalzen an Streckwerken von Spinnereimaschinen
US3531832A (en) * 1968-10-23 1970-10-06 Richard K Whitehead Sr Drafting roll clearer and buffer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190103316A (en) * 1901-02-15 1901-03-30 Malcom Macgregor Greeves Improvements in Apparatus for Scraping or Clearing the Drawing Rollers of Frames for Preparing Flax or other Fibrous Material.
GB190419007A (en) * 1904-09-03 1904-11-24 Thomas Barbour Improvements in Preparing Machinery for Flax, Hemp, and similar Fibres.
US2382214A (en) * 1944-10-14 1945-08-14 Whitin Machine Works Clearer for roving or spinning frames
DE817710C (de) * 1949-08-20 1951-10-18 Franz Herbrich Putzvorrichtung fuer die Riffel- oder Druckzylinder in Streckwerken von Spinnereimaschinen
GB872939A (en) * 1958-12-09 1961-07-12 Ferdinand Reiterer Improvements in devices for cleaning rollers, more particularly for textile machines
DE1266190B (de) * 1962-10-25 1968-04-11 Schubert & Salzer Maschinen Vorrichtung zum mechanisch- pneumatischen Reinigen von Ober- und Unterwalzen an Streckwerken von Spinnereimaschinen
US3531832A (en) * 1968-10-23 1970-10-06 Richard K Whitehead Sr Drafting roll clearer and buffer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000626A (en) * 1988-12-22 1991-03-19 Gte Valenite Corporation Cutting insert for low ranges of feed and depth of cut
US20150040355A1 (en) * 2013-08-12 2015-02-12 Kabushiki Kaisha Toyota Jidoshokki Cleaner for fiber bundle feeder in fore-spinning frame
EP2837717A1 (en) * 2013-08-12 2015-02-18 Kabushiki Kaisha Toyota Jidoshokki Cleaner for fiber bundle feeder in fore-spinning frame
JP2015036456A (ja) * 2013-08-12 2015-02-23 株式会社豊田自動織機 前紡機における繊維束送出装置の清掃装置
CN104372452A (zh) * 2013-08-12 2015-02-25 株式会社丰田自动织机 用于前纺机中的纤维束喂给器的清洁器

Also Published As

Publication number Publication date
CH560256A5 (xx) 1975-03-27
GB1391729A (en) 1975-04-23
ZA717245B (en) 1972-12-27
BE774612R (fr) 1972-02-14
LU64326A1 (xx) 1972-08-03
DE2155913C3 (de) 1975-07-31
DE2155913A1 (de) 1973-02-01
FR2146191B2 (xx) 1974-06-07
CA933739A (en) 1973-09-18
NL7114657A (xx) 1973-01-18
DE2155913B2 (de) 1974-12-12
FR2146191A2 (xx) 1973-03-02
IT989619B (it) 1975-06-10

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