US3587667A - Driving and braking mechanism - Google Patents

Driving and braking mechanism Download PDF

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Publication number
US3587667A
US3587667A US819049A US3587667DA US3587667A US 3587667 A US3587667 A US 3587667A US 819049 A US819049 A US 819049A US 3587667D A US3587667D A US 3587667DA US 3587667 A US3587667 A US 3587667A
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US
United States
Prior art keywords
shuttle
rollers
weaving
pair
driving
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
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US819049A
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English (en)
Inventor
Allan William Henry Porter
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.)
Saurer AG
Original Assignee
Adolph Saurer AG
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 Adolph Saurer AG filed Critical Adolph Saurer AG
Application granted granted Critical
Publication of US3587667A publication Critical patent/US3587667A/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/24—Mechanisms for inserting shuttle in shed

Definitions

  • Striker ABSTRACT A weaving shuttle propulsion and checking mechanism situated outside the warp shed on both sides of the weave width facing each other on the weaving machine consisting of continuously rotating positively driven rollers and bands which are arranged in pairs parallel to one another on separate axis over one another and behind one another carried on levers which are positively steered to bring the pairs of rotating members with pressure into or out of contact with the shuttle so as to grip and transmit their movements in the operative position to the shuttle according to the direction of movement of the shuttle towards or away from the woven fabric edge at the most desired velocity of the shuttle relative to the weaving cycle.
  • the present invention is an improvement of weaving looms where the known and applied mechanism for projecting a shuttle through a warp shed leaving behind a trail of weft thread consists of a picking stick, whip or similar mechanisms which are limited by their geometry to comparatively short movements or displacements on a straight line during which movement they must impart to the shuttle the necessary velocity.
  • the accelerations of the shuttle and the mechanism itself which must be immediately thereafter deccelerated are of a high order of magnitude.
  • FIG. 1 isa sectional side view along the driving and checking mechanism'with reference'to linell of FIG. 2.
  • FIG, 2 is a sectional view with reference to line II'-II of FIG. 1.
  • FIG. 3 is a horizontal sectional view with reference: to line III-Ill of FIG. 2.
  • FIG. 4 shows a variation of the arrangement of the pressure rollers'with a wedge-shaped shuttle.
  • FIGS. l-to 3 are illustrated with I shuttle, 2, 2, 2" 2' pressurerollers of theupperleft-hand row, with 3, 3', 3" 3 pressure'rollers of the lower and opposite'lcfthand row, with,4, 4', 4" 4 pressure rollers'of the upper right-hand row, and with 5, 5, 5" 5"'pressrollers-of the lower and opposite right-hand row.
  • each pressure roller is secured on 7 a rotating axis, which is mounted on 8 an arm of a two or three arm lever 9, which is arranged to swing upon a shaft 10.
  • a gearwheel 11 which is in engagement with a gearwheel 12 which is mounted upon the shaft 10 of the lever 9 concerned.
  • belt pulleys 13 Secured upon each of the shafts 10 are mounted belt pulleys 13 which are driven through a belt 14 another belt pulley 15 mounted on the shaft 10 secures as an intermediate pulley for the transmission of rotation from the belt 14 to the belt pulley 13 on the other shaft 10.
  • a tension spring 17 which tensions the moving band 6 of this pair of rollers.
  • a roller follower 18 On the end of one arm 16 of a lever 9 of each roller pair is mounted a roller follower 18, which through the pressure of spring 20 upon the third arm 19 of the lever 9 concerned is pressed against the cam form 21 of the front end of a cylindrical cam 22.
  • the cylindrical cam 22 and other cylindrical earns 23 whose backside operates in like manner upon a roller follower belonging to another pair of pressure rollers mounted upon respective levers 9 are made fast upon a rotating shaft 24.
  • the shuttle 1 is guided from both sides by guides 25, 26.
  • the shuttle 1 leaving the warp shed enters the space between the guides 25, 26.
  • the pressure rollers 2, 2 and 3, 3" with their respective moving band 6 are brought into the operative position through the action of the spring 20, the lever 9 roller follower 18 and the cam form 21 and are driven from-a motor not shown over belt 14 and belt pulleys 13, 15 as well as gearwheels 11, 12- in rotation so that the circumferential velocity of the moving bands 6 are in the same direction of motion and at the same order of magnitude in their contact position with the shuttle 1.
  • the shuttle l is gripped'between the two moving bands'6 and its progress and velocity reducedtowards that of the moving bands 6, where uponit?
  • FIG. 4 a variation of the drive and braking mechanism arranged for a wedge-shaped shuttle 27.
  • the axis of the pressure roller pairs 2", 3" and 4", 5" are arranged parallel to the wedge angle x of the side surface of the shuttle 27.
  • the support roller 28 is provided for the complete constraint and guidance of the shuttle.
  • each neighboring pair of rollers operating with a running band 6 enveloping the pairs it is also possible for the pressure rollers to operate one after another upon the shuttle.
  • the running band 6 and tension springs 17 would be removed and each roller would beregulated through its own transmission and roller follower l8 and cam surface 21.
  • a driving and braking mechanism for a shuttle arranged to move along a predetermined path through the warp shed of a weaving machine comprising, in combination, support means; a plurality of propelling means mounted on said support means outside the warp shed and arranged spaced in direction of said path from each other and each movable between an active position engaging the shuttle and an inactive position; a plurality of braking means mounted on said support means outside the warp shed and arranged spaced in direction of said path from each other and each movable between an active position engaging the shuttle and an inactive position; drive means cooperating with said plurality of propelling means for moving the same in a first direction in which the shuttle, when engaged by said propelling means, is propelled in said first direction along said path through said shed, said drive means being arranged to move said plurality of propelling means respectively with velocities increasing in said first direction, said drive means also cooperating with said plurality of braking means to drive the latter in a direction opposite to said first direction and respectively with a velocity which decreases in said opposite direction
  • each of said plurality of propelling means and braking means comprises at least one pair of rollers mounted for rotation about-substantially'parallelaxes and drivenby said drive means in the respective direction, the rollers of each pair being respectively arranged so as to be adapted to engage the shuttle on opposite sides.
  • each pair of rollers of said propelling means is adjacent a corresponding pair of rollers of said braking means and wherein all of said rollers are mounted for rotation about substantially parallel axes.
  • each of said propelling and each of said braking means comprises two pairs of rollers mounted for rotation about substantially parallel axes, the rollers in each pair being spaced in direction of said path from each other, and said pairs of rollers being respectively arranged on opposite sides of the shuttle, and a pair of endless bands respectively wound about said pairs of rollers and each having a run adapted to engage the shuttle when said moving means and said braking means are respectively in their active positions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Advancing Webs (AREA)
US819049A 1968-05-02 1969-04-24 Driving and braking mechanism Expired - Lifetime US3587667A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH650868A CH491226A (de) 1968-05-02 1968-05-02 Antriebs- und Bremsvorrichtung für den Webschützen an einer Webmaschine

Publications (1)

Publication Number Publication Date
US3587667A true US3587667A (en) 1971-06-28

Family

ID=4310705

Family Applications (1)

Application Number Title Priority Date Filing Date
US819049A Expired - Lifetime US3587667A (en) 1968-05-02 1969-04-24 Driving and braking mechanism

Country Status (8)

Country Link
US (1) US3587667A (xx)
JP (1) JPS4930859B1 (xx)
AT (1) AT292595B (xx)
BE (1) BE732245A (xx)
CH (1) CH491226A (xx)
FR (1) FR2007718A1 (xx)
GB (1) GB1272625A (xx)
SE (1) SE352669B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889722A (en) * 1972-09-04 1975-06-17 Saurer Ag Adolph Braking and driving device for the shuttle of a weaving loom
US4373557A (en) * 1980-04-24 1983-02-15 Aktiengesellschaft Adolph Saurer Apparatus for picking the shuttles of a loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9501865D0 (sv) * 1995-05-19 1995-05-19 Tpi Sweden Ab Anordning för skytteldrivning samt vävmaskin, försedd med skytteldrivanordningar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889722A (en) * 1972-09-04 1975-06-17 Saurer Ag Adolph Braking and driving device for the shuttle of a weaving loom
US4373557A (en) * 1980-04-24 1983-02-15 Aktiengesellschaft Adolph Saurer Apparatus for picking the shuttles of a loom

Also Published As

Publication number Publication date
SE352669B (xx) 1973-01-08
GB1272625A (en) 1972-05-03
AT292595B (de) 1971-09-10
JPS4930859B1 (xx) 1974-08-16
DE1813506A1 (de) 1969-12-04
BE732245A (xx) 1969-10-01
FR2007718A1 (xx) 1970-01-09
DE1813506B2 (de) 1976-12-30
CH491226A (de) 1970-05-31

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