US3670775A - Braking shuttles in loom shuttle box - Google Patents

Braking shuttles in loom shuttle box Download PDF

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Publication number
US3670775A
US3670775A US65442A US3670775DA US3670775A US 3670775 A US3670775 A US 3670775A US 65442 A US65442 A US 65442A US 3670775D A US3670775D A US 3670775DA US 3670775 A US3670775 A US 3670775A
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United States
Prior art keywords
shuttle
roll
braking
masses
belt
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
US65442A
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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 US3670775A publication Critical patent/US3670775A/en
Anticipated expiration legal-status Critical
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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
    • D03D49/52—Shuttle boxes

Definitions

  • the present invention concerns a method for the braking of shuttles in the shuttle box of looms whereby the shuttle is forced into driving contact with a means capable or rotation which is thus caused to rotate, and further concerns a disclosure for the application of this method.
  • the shuttle In known looms in which shuttles fly free from the shuttle box on one side of the loom to the shuttle box on the other side of the loom, the shuttle is slowed down from its entry speed to a residual fraction thereof by friction brakes arranged in the shuttle box. At that residual speed, the shuttle then hits against a stop, which may be fitted to the picking device.
  • the friction brake often consists of one of the side walls of the shuttle box, which is provided with a brake lining and resiliently presses the shuttle against a fixed backing wall serving as a guide wall.
  • lt is another object of the present invention to provide a method which eliminates the drawbacks described and in particular ensures, in a very simple manner, that the standstill position of the shuttle is invariably the same.
  • a further object of the present invention is to provide a device for the application of the above described method.
  • the device comprises a system of masses comprising two rolls which are arranged one behind the other preferably in the movement direction of the shuttle and which are interconnected by a transmission belt whereof one course runs at least approximately parallel to the movement direction of the shuttle; this device is characterized in that the roll nearer to loom shed is mounted on a fixed axis and has less rotation inertia, while the roll further from the loom shed is resiliently displaceable towards the first roll and has greater rotation inertia. Further, the space delimited by the belt is free at least immediately behind the course coming into contact with the shuttle.
  • the rolls may be mounted in a frame or a case which can pivot towards the shuttle or away therefrom and which is translationally movable perpendicularly to the shuttle move ment direction.
  • a shuttle 1 moving from the loom shed towards the shuttle box as indicated by an arrow 2, and carrying a weft bobbin 3.
  • a lateral guide wall 5 for the shuttle l Opposite the wall 5 is a box-type or frame-type unit 6 which is also rigidly fixed to the shuttle box base 4.
  • the wall 34 of the unit 6 facing the guide wall 5 presents an angled-off or inclined entrance surface 7 and a window 8. Projecting through the window 8 into the shuttle box is a belt 11 carried around two rolls or rollers 9 and 10.
  • the rolls 9 and 10 are supported by pins or axles 12 and 13 which in turn are mounted in a frame 14 which is supported against the rear wall 36 of the unit 6 by springs 15, 16, whose pressure is adjustable by screws 17, 18.
  • the frame 14 is guided in the direction perpendicular to the shuttle box base 4 by bottom and top surfaces of the unit 6, and in the direction of the shuttle movement by sliding pins 38 sliding in corresponding holes 39 in the rear wall 36 of the unit 6, the guidance being such as to permit the support frame 14 to pivot about axes perpendicular to the shuttle box base 4.
  • the distance by which the belt 1 1 projects through the window 8 into the shuttle box is set by a tab at each end of the frame 14 only the one such tab 19 is being shown, each in conjunction with a wing (only the wing 21 is shown) of a doublearm lever.
  • the two levers 23, 24 which are actuated, for example, by earns 41 and 42.
  • fly-weights 25, 25', 25" Seated on the pin 13 of the roll 10 and connected thereto with drive-transmitting effect are exchangeable fly-weights 25, 25', 25".
  • the connection between pin 13 and fly-weights 25, 25', 25" may be rigid or elastic.
  • the tension of the belt 11 is produced by a spring 26 which rests on one side against a fixed transverse wall 27 of the support frame 14 and which acts on the other side on a C-shaped bearing plate 29 of the pin 13 which is displaceable in a longitudinal slot 28 of the support 14.
  • a picker 31 fixed to a picking arm 32 projects through an opening 30 in the shuttle box base 4 into the picking plane.
  • a buffer 33 acting as a stop.
  • the action of the device is as follows:
  • the shuttle 1 Coming from the loom shed, the shuttle 1 enters the space defined by the shuttle box base 4, the guide wall 5 and the front surface of the belt 1 1, in which process the inclined surface 7 facilitates the entry of the shuttle 1.
  • the belt 11 and, accordingly, the fly-weights 25, 25', 25" are accelerated by the frictional force arising at the contact surfaces between the said belt and the shuttle 1, until, for instance, the peripheral speed of the belt is identical with the speed of the shuttle 1 being slowed.
  • This speed depends on the moment of inertia of the fly-weights 25, 25, 25" co-moved with the belt 11; it can be given the value desired by suitable selection of the fly-weights.
  • the friction in particular of the shuttle l at the fixed guide wall 5 and that in the bearing of the rolls 9 and 10 and at the belt 11 itself absorbs kinetic energy, so that the speed of the moving system comprising shuttle, belt, rolls and fly-weights diminishes.
  • the braking course of the belt 11 projects into the shuttle box far enough for the entering shuttle l to touch the belt in the zone of its tip. Because the rolls 9 and 10 are mounted in the support 14 which is moveable perpendicularly to the direction of the shuttle 1 and parallel to the shuttle box base 4, because of the special arrangement of the rolls in that the roll 9 nearer the loom shed is fixedly-mounted in the support frame 14 and has less inertia, while the roll 10 farther away from the loom shed is resiliently mounted in the support 14 and has greater inertia and because the course of the belt facing the shuttle is movable toward and away therefrom, the effect is that when the belt 1 l is pushed back in a direction perpendicular to the movement direction by the thickness of the shuttle 1 the roll 10 is pulled against the pressure of the spring 26 towards the roll 9 by the other course being tensioned by the braking course being pushed back.
  • the braking course is deformed before the point of contact with the shuttle to form a wave trending towards the shuttle tip.
  • the braking course can thus hug the shape of the shuttle with its contact surface.
  • the support 14 is withdrawn into the unit 6 by the cams 41, 42, setting by double-arm levers 22, 24.
  • Device for the braking of shuttles in a shuttle box of a loom comprising a rotation-movable system of masses wherein said system of masses comprises a first roll and a second roll arranged behind the first roll in the movement direction of the shuttle, said rolls being interconnected by a transmission belt whereof one course is at least approximately parallel to the movement direction of the shuttle, said first roll being fixedly mounted and said second roll being resiliently displaceable towards said first roll and having a greater rotation inertia than said first roll.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US65442A 1969-08-28 1970-08-20 Braking shuttles in loom shuttle box Expired - Lifetime US3670775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1302569A CH512609A (de) 1969-08-28 1969-08-28 Verfahren zum Bremsen von Webschützen im Schützenkasten von Webmaschinen und Vorrichtung zur Ausführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3670775A true US3670775A (en) 1972-06-20

Family

ID=4388625

Family Applications (1)

Application Number Title Priority Date Filing Date
US65442A Expired - Lifetime US3670775A (en) 1969-08-28 1970-08-20 Braking shuttles in loom shuttle box

Country Status (9)

Country Link
US (1) US3670775A (enrdf_load_stackoverflow)
JP (1) JPS5010985B1 (enrdf_load_stackoverflow)
BE (1) BE755387A (enrdf_load_stackoverflow)
CH (1) CH512609A (enrdf_load_stackoverflow)
DE (1) DE1955420A1 (enrdf_load_stackoverflow)
FR (1) FR2058919A5 (enrdf_load_stackoverflow)
GB (1) GB1294512A (enrdf_load_stackoverflow)
PL (1) PL80992B1 (enrdf_load_stackoverflow)
SE (1) SE359324B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794085A (en) * 1972-02-28 1974-02-26 Noxxe Inc Shuttle boxing method and apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH596363A5 (enrdf_load_stackoverflow) * 1976-03-29 1978-03-15 Saurer Ag Adolph
SE9501865D0 (sv) * 1995-05-19 1995-05-19 Tpi Sweden Ab Anordning för skytteldrivning samt vävmaskin, försedd med skytteldrivanordningar

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2012050A (en) * 1933-08-29 1935-08-20 Crompton & Knowles Loom Works Shuttle box construction for looms
US2081319A (en) * 1935-12-30 1937-05-25 William H Bahan Shuttle box and binder
US2184058A (en) * 1939-02-03 1939-12-19 Crompton & Knowles Loom Works Shuttle check for looms
DE695371C (enrdf_load_stackoverflow) * 1938-11-11 1940-08-23 Jakob Verbockett

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2012050A (en) * 1933-08-29 1935-08-20 Crompton & Knowles Loom Works Shuttle box construction for looms
US2081319A (en) * 1935-12-30 1937-05-25 William H Bahan Shuttle box and binder
DE695371C (enrdf_load_stackoverflow) * 1938-11-11 1940-08-23 Jakob Verbockett
US2184058A (en) * 1939-02-03 1939-12-19 Crompton & Knowles Loom Works Shuttle check for looms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794085A (en) * 1972-02-28 1974-02-26 Noxxe Inc Shuttle boxing method and apparatus

Also Published As

Publication number Publication date
DE1955420A1 (de) 1971-03-11
CH512609A (de) 1971-09-15
BE755387A (fr) 1971-02-01
GB1294512A (en) 1972-11-01
FR2058919A5 (enrdf_load_stackoverflow) 1971-05-28
JPS5010985B1 (enrdf_load_stackoverflow) 1975-04-25
SE359324B (enrdf_load_stackoverflow) 1973-08-27
PL80992B1 (enrdf_load_stackoverflow) 1975-08-30

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