US2666232A - Pressure-applying device for the drafting rollers of drafting apparatus - Google Patents

Pressure-applying device for the drafting rollers of drafting apparatus Download PDF

Info

Publication number
US2666232A
US2666232A US157588A US15758850A US2666232A US 2666232 A US2666232 A US 2666232A US 157588 A US157588 A US 157588A US 15758850 A US15758850 A US 15758850A US 2666232 A US2666232 A US 2666232A
Authority
US
United States
Prior art keywords
drafting
roller
rollers
pressure
spring
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
US157588A
Other languages
English (en)
Inventor
Ambler Geoffrey Hill
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.)
Ambler Superdraft Ltd
Original Assignee
Ambler Superdraft Ltd
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 Ambler Superdraft Ltd filed Critical Ambler Superdraft Ltd
Application granted granted Critical
Publication of US2666232A publication Critical patent/US2666232A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D01H5/50—Loading arrangements using springs

Definitions

  • FIGJ. 1 A first figure.
  • the upper rollers are usually arranged in pairs each having a common supporting shaft, each shaft being allowed to rest on a pair of inclined supporting surfaces, a spring pressure device be? ing provided $01 each pair and arranged to bear on the shaft between the pair of rollers so as to apply pressure to the nip of the drafting rollers.
  • the lower rollers are usually of fluted metal while the upper rollers are provided with a cover of softer material, e. a, cork,
  • any eccentricity (or other irregularity), however slight, in either of the drafting rollers, will (during rotation of the" rollers) cause movement of the upper roller shaft towards and away from the lower roller, and during any such movements, the frictional resistance arising from the binding action mentioned above will act to increase the pressure at the nip of the rollers as the upper roller shaft moves away from the lower roller and to decrease the pressure at the nip as the shaft moves towards the lower roller, with the result that the depression formed in the softer upper roller by the harder lower roller will vary in width. The effect of this is to cause the nip point of the rollers, i.
  • the invention consists in the use in drafting machinery (and especially high-draft drafting machinery) of a mounting for a drafting roller which allows pressure to be applied to it without uf icie ction t aus binding w ich ill r nd une en he o ati o the mach ne; d t e inventi n consis s n is ther with o without the other improvements already referred ohis inv nt on can in pa ticu a b a a tageously combined with drafting apparatus for wOISted fibres, and especially with drafting ape paratus of the sort now commonly used [for such fibres or high-draft apparatus derived there.- from,
  • th pr n of the spring pressure device is preferably 'of such a nature that its resilience is greater than that of the cover of the upper roller so that any irregularity in the drafting rollers will tend to compress the spring rather than the cover of the upper roller.
  • the spring pressure is conveniently adjusted by screw means, and according to a further feature of the invention, there is provided an indicating device calibrated in accordance with spring compression so as to indicate the degree of pressure applied to the drafting rollers.
  • Figure 1 is an elevation of part of a high drafting apparatus showing a pressure-applying device according to the invention applied to the upper of the drafting rollers.
  • Figure 22 is a sectional end elevation of the pressure-applying device drawn to a larger scale than Figure 1;
  • Figure 3 is a side elevation of the apparatus shown in Figure 2, as viewed in the direction of the arrow in Figure 2.
  • a roving l I is passed through the nip of a pair of feed rollers l2 and :3, the lower roller :3 being formed with a pair of flanges i l between which the upper roller 12 runs and presses on the roving l I, the pressure being provided by a spring device (not shown) in known manner.
  • the roving is passed through an intermediate high drafting unit as indicated, such for example, among other possibilities, the type of unit disclosed in my above-mentioned applications, and which per se forms no part of the present invention- From there the roving is passed to the nip of a pair of drafting rollers 2i and 22 from which it passes in the form of yarn 23 to the bobbin of a cap-spinning device of known construction and generally indicated by reference numeral 24.
  • the mechanism described above constitutes a drafting unit. of which there is one for each spindle of a spinning frame.
  • the lower drafting rollers 22 are secured at intervals to a common driven shaft 34 mounted in bearings 36 supported in bearing brackets 3?, while the upper drafting rollers 2i are freely mounted on ball bearings in pairs each having a common supporting shaft 38.
  • the upper rollers 2i rest on the lower rollers 22, the common shaft 33 passing freely into parallel-sided recesses 39 formed in a pair of supporting brackets mounted on a common rail l: secured to the bearing brackets 3'! and extending the whole length of the spinningv frame.
  • the recesses 39 are open at the top for the purpose of easy removal of the pair of rollers 2! when required, and the longitudinal axes of the recesses 39 are arranged to intersect the axis of the lower drafting roller shaft 34 so that the shaft 38 moves directly towards and away from the shaft 34.
  • the abutment member as is formed with a pair of extensions 55 having open ended slots 5? for the reception of a shaft 58 carrying a pair of felt clearing rollers 59 arranged to rest on the upper portions of the upper rollers 2 I.
  • the swivel member lt is pivotally mounted at El in a supporting bracket 62 secured to the rail 42, the pivotal axis 6i being arranged to intersect the straight line joining the axes of the upper and lower rollers 2i and 22 and thus the longitudinal axes of the recesses 39.
  • the spring thus exerts pressure on the shaft 38 in the direction of its movement in the recesses 39 so that there is no tendency of the shaft 38 to bind in the recesses 39, neither is there any turning moment applied to the hool: member 43 so that it too is free from any tendency to bind on the rod it.
  • any frictional forces tending to resist the action of the spring 52 are very slight, with the result that a very even pressure is exerted at the nip of the drafting rollers 2i and 22 with marked improvement in operation, particularly when drafting to the high degrees mentioned earlier.
  • a collar 63 is secured to the rod 44 slightly below the operative position of the hook member 53 so as to prevent more than a slight movement of the hook member along the rod 44 when the. device is swung clear of the shaft 38, and the nose of the hook member 33 is inclined at 64 so as to act as a cam for lifting the hook member against the pressure of the spring 52 as the nose of the hool: member meets the upper surface of the shaft 38 during the lifting of the device into operative position.
  • hook member used herein is intended to include any member having a depression adapted to engage a portion of the periphery of the upper roller shaft, the depression being so shaped that the hook member can be readily snapped into or out of operative position by a swinging movement of its supporting rod.
  • each pressure-applying device is provided with an indicating device consisting of a .106 65 freely mounted in a bore in the abutthe knob 54, rings of different colour are ob served protruding from the abutment member All.
  • an indicating device consisting of a .106 65 freely mounted in a bore in the abutthe knob 54
  • rings of different colour are ob served protruding from the abutment member All.
  • the collars! is formed separately from the rod 65 and provided with a longitudinal slit 69 so that the collar can be pushed on to the rod with a tight fit.
  • the pressure is then adjusted' to a given value on the series of pressureapplying devices by the knobs 54 and the rods 65 pushed into the collars 6T sufliciently to leave the same colour protruding from, the abutment member,
  • the lower drafting roller 22 is formed from metal and is fluted as well known in the ar while the upper roller 2! is provided with'a cover H of bonded ground cork of a somewhat softer nature than that normally used for drafting rollers. It is found that cork having a degree of shore hardness of between 55 and 80, gives much improved results over the harder cork previously used.
  • the invention is also suitable for use in combination with other types of high-draft machine than that referred to.
  • Apparatus for drafting textile rovings or the like comprising a lower drafting roller, an upper drafting roller freely mounted on a supporting shaft and arranged to rest on the lower roller, a mounting for the upper roller including a pair of guiding recesses in which the supporting shaft is arranged to rest, said recesses being arranged with their longitudinal axes intersecting the axis of the lower roller, and a spring-pressure device including a support mounted for pivotal movement about an axis intersecting said longitudinal axes so as to be capable of swinging away from the upper roller into an inoperative position, a rod forming part of said support and arranged (when in operative position) with its axis in a plane parallel to that containing said longitudinal axes, a hook member slidably mounted on said rod and formed with a depression for engagement with the upper portion of the upper roller shaft, an abutment slidably mounted for adjustment on said rod, a compression spring arranged between the hook member and the abutment so as to apply pressure to the
  • hook member being formed with an inclined guiding surface for lifting the hook member against the action of the spring as'the nose of the hook member engages the shaft as the pressure device is swung into operative position.
  • Apparatus for drafting textile rovings or the 6? 1ike comprising.a lower drafting roller, an upper drafting roller freely mounted on a supporting shaft and arranged to rest on the lower roller, a mountin for the upper roller including a pair of guiding recesses in which the supporting shaft is arranged to rest, said recesses being arranged with their longitudinal axes intersecting the axis of the lower roller, and a spring-pressure device including a support mounted for pivotal movement about an axis intersecting said longitudinal axes so as to be capable of swinging away from the upper roller into an inoperative position, a hook member arranged to engage the upper portion ofthe upper roller shaft, an abuts ment member mounted on said support, a compression spring arranged between the hook meme her and the abutment member so as to apply spring pressure to the hook member, said spring being arranged (when in operative position) with its axis in the same plane as said longitudinal axes, means for adjusting the pressure applied 1 to the upper roller by the spring
  • Apparatus for drafting textile rovings or the like comprising a lower drafting roller, an upper drafting roller freely mounted on a supporting shaft and arranged to rest on the lower roller, a mounting for the upper roller including a pair of guiding recesses in which the supporting shaft is arranged to rest, said recesses being arranged with their longitudinal axes intersecting the axis of the lower roller, a spring pressure device including a supporting rod mounted for pivotal movement about an axis intersecting said longitudinal axes so as to be capable of swinging away from the upper roller into an inoperative position, a hook member and an abutment member slidably mounted on said rod and extending transversely therefrom, said hook member being arranged to engage the upper portion of the upper roller shaft, a compression spring arranged between the hook member and the abutment member with its axis parallel to that of said rod, knob means arranged in threaded engagement with the upper portion of said rod and arranged to bear against the abutment so that the spring pres ure
  • Apparatus for drafting textile rovings or the like comprising a lower drafting roller, an upper drafting roller freely mounted on a supporting shaft and arranged to rest on the lower roller, a mounting for the upper roller including a pair of guiding recesses in which the supporting shaft is arranged to rest, said recesses being arranged with their longitudinal axes intersecting the axis of the lower roller, and a spring-pressure device including a support mounted for pivotal movement about an axis intersecting said longitudinal axes so as to be capable of swinging away from the upper roller into an inoperative position, a hook member arranged to engage the upper portion of the upper roller shaft, an abutment member mounted on said support, a compression spring arranged between the hook-member and the abutment member so as to apply pressure to the hook member, said spring being arranged (when in operative position) with its axis in the same plane as said longitudinal axes, means for adjusting the pressure applied.
  • an indicating device comprising a rod slidably mounted in said abutment member oo-axially with the spring and arranged at one end to protrude through said abutment member and at the other end to bear on said hook member, said rod being spring-urged into engagement with said hook member and formed at its, upper end with calibrations of contrasting colors for indicating said spring pressure.
  • Apparatus for drafting textile rovings or the like comprising a lower drafting roller, an upper drafting roller freely mounted on a supporting shaft and arranged to rest on the lower roller, a mounting for the upper roller in which the roller is capable of movement towards and away from the lower roller, said mounting including guiding means for the upper roller shaft for constraining the shaft to move with its axis substantially in a plane containing the axis of the lower roller, and a spring pressure device including a support pivotally mounted so as to be capable of swinging away from the upper roller into an inoperative position, a rod forming part of said support and arranged (when in operative position) with its axis in a plane parallel to that containing the roller axes, a hook member slid ably mounted on said rod and formed with a depression for engagement with the upper portion of the upper roller shaft, an abutment slidably mounted for adjustment on said rod, 9, compression spring arranged between the hook member and the abutment so as to apply pressure to the hook member,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US157588A 1949-05-10 1950-04-22 Pressure-applying device for the drafting rollers of drafting apparatus Expired - Lifetime US2666232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2666232X 1949-05-10

Publications (1)

Publication Number Publication Date
US2666232A true US2666232A (en) 1954-01-19

Family

ID=10913029

Family Applications (1)

Application Number Title Priority Date Filing Date
US157588A Expired - Lifetime US2666232A (en) 1949-05-10 1950-04-22 Pressure-applying device for the drafting rollers of drafting apparatus

Country Status (3)

Country Link
US (1) US2666232A (enrdf_load_stackoverflow)
FR (1) FR1018964A (enrdf_load_stackoverflow)
GB (1) GB685528A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900674A (en) * 1954-02-23 1959-08-25 Whitin Machine Works Pressure-applying means for drafting roll

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB286899A (enrdf_load_stackoverflow) *
GB190808616A (en) * 1908-06-30 1909-01-28 George Buchan Black Improvements in and relating to the Pressing Rollers of Spinning and Preparing Machinery.
US1710275A (en) * 1927-04-01 1929-04-23 Prince-Smith William Roller of spinning, twisting, roving, and analogous machines
US2012223A (en) * 1935-05-02 1935-08-20 Roger W Cutler Textile fiber working unit
GB457804A (en) * 1935-06-06 1936-12-07 John Adamson Kinnear Improvements in and relating to drawing, roving and like textile frames
US2177929A (en) * 1938-03-23 1939-10-31 Pacifie Mills Drafting frame

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB286899A (enrdf_load_stackoverflow) *
GB190808616A (en) * 1908-06-30 1909-01-28 George Buchan Black Improvements in and relating to the Pressing Rollers of Spinning and Preparing Machinery.
US1710275A (en) * 1927-04-01 1929-04-23 Prince-Smith William Roller of spinning, twisting, roving, and analogous machines
US2012223A (en) * 1935-05-02 1935-08-20 Roger W Cutler Textile fiber working unit
GB457804A (en) * 1935-06-06 1936-12-07 John Adamson Kinnear Improvements in and relating to drawing, roving and like textile frames
US2177929A (en) * 1938-03-23 1939-10-31 Pacifie Mills Drafting frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900674A (en) * 1954-02-23 1959-08-25 Whitin Machine Works Pressure-applying means for drafting roll

Also Published As

Publication number Publication date
FR1018964A (enrdf_load_stackoverflow)
GB685528A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
EP0478734B1 (de) Messvorrichtung
US2666232A (en) Pressure-applying device for the drafting rollers of drafting apparatus
DE102017130219A1 (de) Spinnereimaschine und Verdichtungsvorrichtung
DE1685570A1 (de) Streckenwerkanordnung mit Faserbandausgleich
CH708812A1 (de) Streckwerk mit einem Druckelement.
CH699284A2 (de) Anpressvorrichtung für Kalanderwalzen.
DE102011052367A1 (de) Streckwerk einer Textilmaschine sowie Verfahren zu dessen Betrieb
US2710428A (en) Apparatus for spinning yarn
DE102014003101A1 (de) Unverstellbarer Druckarm
US2707309A (en) Draw box roll setting mechanism
DE2649156C3 (de) Entlastungsvorrichtung an einem bei einer Offenend-Spinnvorrichtung vorgesehenen Spulenhaltetragarm
US2076609A (en) Drawing mechanism
US731401A (en) Drawing-frame.
DE102017130221A1 (de) Streckwerk für eine Spinnereimaschine und Verdichtungsvorrichtung
US3037249A (en) Top roll carrier arrangement
DE687408C (de) Strecke fuer Baumwolle u. dgl. und Verdichtungstrichter fuer die Strecke und Streckwerke von Flyern und Feinspinnmaschinen
EP2628829B1 (de) Streckwerk zum Verziehen eines Vorgarns
US2301226A (en) Pressure applying mechanism for top rolls
CH714444A1 (de) Streckwerk für eine Spinnmaschine mit einer Verdichtungsvorrichtung.
DE2217619C2 (de) Führungs- und Belastungsvorrichtung für eine Druckwalze an Spinnereimaschinen
US2121137A (en) Belt cradle for roving and spinning frames
CH707783A2 (de) Vorrichtung zum Reinigen von Walzenoberflächen an einer Textilmaschine.
EP2628828B1 (de) Streckwerk zum Verziehen eines Vorgarns
US2955329A (en) Draft assembly capable of drafting sliver or roving in a spinning frame
DE830017C (de) Messeinrichtung fuer Streckwerke von Spinnereimaschinen, insbesondere Grossfaser-Spinnmaschinen