US3333606A - Guiding arrangement for securing a picking stick on a weaving loom - Google Patents

Guiding arrangement for securing a picking stick on a weaving loom Download PDF

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Publication number
US3333606A
US3333606A US450607A US45060765A US3333606A US 3333606 A US3333606 A US 3333606A US 450607 A US450607 A US 450607A US 45060765 A US45060765 A US 45060765A US 3333606 A US3333606 A US 3333606A
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United States
Prior art keywords
picking stick
shuttle
stick
picking
picker
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Expired - Lifetime
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US450607A
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English (en)
Inventor
Zollinger Hans
Lutz Friedrich
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.)
Ruti Machinery Works Ltd
Maschinenfabrik Rueti AG
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Maschinenfabrik Rueti AG
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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
    • D03D49/26—Picking mechanisms, e.g. for propelling gripper shuttles or dummy shuttles
    • D03D49/38—Picking sticks; Arresting means therefor

Definitions

  • the present invention relates to a guiding arrangement for securing a picking stick of a weaving loom and, in particular, to novel guiding arrangements for rectilinearly guiding the picker and coupling the picking stick to the sley frame.
  • the invention has the advantage that the shuttle is, practically speaking, no longer pushed by the picker after the braking step of the shuttle has been terminated.
  • FIGURE 1a shows an elevation (partly in section) of a picking stick securing arrangement according to the invention
  • FIGURE 1b shows a section along the line I-I of FIG- URE la;
  • FIGURE 2a shows a further embodiment of the picking stick securing arrangement according to the invention
  • FIGURE 2b shows a section along the line II-]1 of FIGURE 2a;
  • FIGURE 2c shows a further modification of the embodiment of the picking stick securing arrangement shown in FIGURE 2a;
  • FIGURE 2d shows a section taken along line 111-111 of FIGURE 20.
  • FIGURE 3 shows a further embodiment of the present invention.
  • FIGURE also shows further parts of the weaving loom to the extent necessary for understanding the invention.
  • the picking stick 11 is pc- 3,333,606 Patented Aug. 1, 1967 riodically urged towards the right by a strap 12 retained in its horizontal position by the carrier part 13.
  • the shuttle 14 is driven, through the agency of the picker 15 secured on the upper end of the picking stick 11, over the sley 16 and through the open shed (not shown) on to the right-hand side of the weaving 10111 from which, after the shed change, it is again urged back.
  • the returning shuttle 14 is taken up by the picker 15 and the picking stick 11 on which it impinges at high velocity. As it does so, the picking stick impinges on the resilient receiving member 17.
  • the picking stick 11 is so guided during its reciprocating movement by means of the guide member or body 18 and the upper and lower guide arrangements comprising the guide or link arms 19 and 20, respectively, that the picker 15 moves practically parallel to the sley 16, at least during the time in which it is in contact with the shuttle 14.
  • the guide member 18 is secured to the picking stick 11 by means of a bolt 29, and is carried by the guide arms 19 and 20.
  • the guide arm 19 is pivotally secured on pivots 21 and 22, and is coupled with the guide member 18 by means of the pivot 21.
  • the pivot 22 is secured at a retaining point 23 of the sley frame which is reciprocated with the sley.
  • the two-part guide arm 20 is also rotatably coupled by means of a pivot 24 with the guide member 18 and by means of the pivot 25 with the retaining point 66 of the sley frame moving with the sley.
  • a slot having the shape of a rectangular aperture 26 Formed in the guide member 18 is a slot having the shape of a rectangular aperture 26. As shown in FIGURES 1a and lb, a slide body or member 27 is disposed within the aperture. The dimensioning of the slide body and the aperture allows for movement of the slide body 27 relatively to the aperture 26 by providing clearance between the two, that is, an intermediate space 28.
  • the slide member 27 is pivotally retained on the two-part guide arm 20 'by means of pivot pin 24. In order to facilitate understanding of the invention, this part of the device is also shown in FIGURE 1b.
  • the picking stick 11 is in the position shown in FIGURE 1a.
  • the shuttle 14 impinging on the picker 15 of the picking stick 11 is braked, in that the rearward movement imparted to the picking stick '11 by the shuttle 14 is halted at the receiving member 17. It is found, with many of the conventionally known weaving looms, that after the picker 15 and the shuttle 14 have come to a complete standstill, there is set up in the upper portion of the picking stick a further movement, due to which the shuttle 14 is again moved away out of its rest position which it has already adopted. Consequently, the final rest position of the shuttle becomes undefined.
  • this disadvantage is overcome by the provision of the coupling between the aperture 26 and the slide member 27 having the intermediate space 28. It appears that the detrimental further movement results from oscillations of the picking stick 11 due to the impinging of the shuttle 14 on the picker 15. If the connection between the lower end of the picking stick and the sley support (for example, the retaining point 66) is non-resilient, the oscillations are reflected" at the lower end of the picking stick and bring about the subsequent further movement of the picker 15 and shuttle 14.
  • a torsion spring permanently exerting a pivoting force in the direction of the arrow A.
  • the shuttle 14 moves, together with the upper part of the picking stick 11, towards the left until the latter comes to a standstill at the receiving member 17.
  • the intermediate space or clearance 28 between the slide member 27 and the aperture 26 is again formed on the left-hand side of these parts.
  • the left-hand edge of the aperture 26 travels through the clearance 28 or the intermediate space 28 disposed towards the left between the aperture 26 and the slide member 27. This is followed by the movement of the guide arms 19 and 20 directing the rectilinear guiding of the picker 15. Since the slide member 27 bears against the upper and lower edge of the aperture 26 and since the picking stick 11 is vertical (or perpendicular) at the instant of the detachment of the shuttle 14 form the picker 15, it will be clear that, due to the clearance 28, no deviation of the shuttle can take place out of its horizontal path of movement, i.e. there will be no disadvantageous influence of the clearance 28 on the parallel guiding of the picker.
  • FIGURES 2a and 2b again has a picking stick 11 with a guide member 18 selcured thereto by securing means 29.
  • the guide or link arm 19 is coupled by means of the pivots 21 and 22 with the guide member 18 and with a part 23 of the sley support respectively.
  • the lower part of the guide arrangement comprises conically shaped members 31 and 31' secured on the guide member 18 in such manner as to be rotatable about a pivot pin 32.
  • FIGURE 2b shows a section taken along the line II-II of FIGURE 2a.
  • the rotation possibility of the members 31 and 31 about the pivot 32 permits a mode of operation with alternating angular positions between the picking stick 11 and the guide member 18 relatively to the rod 33 fast on the sley member 66.
  • the member 31 and the corresponding member 31'
  • the guide jaws 34 and 35 and the corresponding jaws 34 and 35
  • the members 31 and 31' shown in FIGURE 2a need not necessarily be conical.
  • the members 31 and 31 may be replaced by a member 70 having the shape of a cylinder, the pivot of which (such as the pivot 32) extends perpendicularly with respect to the plane defined by the picking stick movement.
  • cylindrical member 70 need not necessarily be rotatable about its axis but may be disposed rigidly on the guide body 18. It is self-evident that the diameter of a cylindrical member of this kind will, in analogy to the conical member 31, be so dimensioned and arranged that it is disposed closely between the jaws 34 and 35 in the lowermost point of its movement, thus providing a zone in which detrimental movement influences on the shuttle during the shuttle pick are avoided.
  • the embodiment according to FIGURE 3 again provides a picking stick 11 which is periodically thrown towards the right by the strap 12 in order to drive the shuttle.
  • the picking stick is again guided by means of the guide arrangement comprising the guide arms or links 19 and 41.
  • This arrangement carries the guide member 18, a torsion spring so disposed on the pivot 22 again pre-tensioning the link 19 in the direction of the arrow A.
  • the link or arm 41 is pivotally mounted by means of the pivot 42 on the guide member 18 and the pivot 43 on the retaining member 44 fast with the sley frame.
  • a carrier member 46 is clamped fast with the picking stick 11 by means of screws 45.
  • the carrier member is connected with the guide member 18 for pivoting about the pivot 47. Consequently, when the picking stick 11 rotates clockwise, a gap or clearance 48 is formed between the picking stick 11 and the guide member 18.
  • An intermediate member 49 which may be made of leather, is secured on the guide body 18 for exerting a damping efiect.
  • a band 50 is also secured at one of its ends to the carrier member 46 and at its other end to a cylinder 52 rotatable about the pivot pin 51.
  • the cylinder 52 is so pre-tensioned by a spring 81 (not shown) that it endeavors to rotate in the direction of the arrow -B and thereby to displace the lower end of the picking stick into abutment with the intermediate member 49.
  • the cam 53 secured to the cylinder 52 impinges against abutment 54 so that the effect of the spring acting in the direction B is cancelled out.
  • the clearance 48 is able to form, in the the position of the arrangement illustrated in FIGURE 3, due to the tension of the spring acting in direction A.
  • the intermediate space or gap 48 is first of all closed and then, due to the picking stick movement, there is a pull on the band 50, so that the cam 53 is lifted off from the abutment 54. Consequently, by means of the pretension or bias effective in direction B, the intermediate space 48 is kept continuously closed, also during the working phase, during which the acceleration of the pick ing stick ceases and the shuttle 14 is detaching from the picker 15. This eliminates any kind of deviation from rectilinear guiding, which could be caused by the existence of the clearance 45 and might detrimentally influence the straight travel of the shuttle 14.
  • the special advantage of this device consists in that, in the rest position of the picking stick 11 before the impinging of the shuttle 14 coming from the right, the picker 15 is disposed vertically over the pivot point 47 of the picking stick, as indicated by the broken line 55, so that the picker moves exactly horizontally towards the left, despite the clearance 48.
  • a weaving loom having upper and lower guiding arrangements for horizontally guiding a picker secured to the upper end of a picking stick for driving and for catching a shuttle and for coupling the picking stick with a sley frame
  • the improvement which comprises a securing means located adjacent to the lower guiding arrangement, said securing means providing an intermediate space that permits a movement of the lower end of the picking stick perpendicularly with respect to its longitudinal axis, and a resilient means secured to the upper guiding arrangement for providing a pretension which is such that in the rest position of the picking stick the intermediate space ispositioned to allow movement of the lower end of the picking stick in a direction towards the center of the weaving loom when the picker is impinged on by the shuttle whereby reflections of oscillations tending to occur along the longitudinal axis of the picking stick are substantially prevented and said securing means providing a coupling between the picking stick and the sley frame which is substantially rigid in the op posite direction.
  • said securing means comprises a member which forms part of the lower guiding arrangement and which is disposed between two parts of the weaving loom, said parts being the lower end of the picking stick and a retaining point which is secured to the sley frame and said member providing said intermediate space between two boundary arrangements, said member being supported by one of the two parts of the weaving loom and the boundary arrangement being supported by the other of said parts.
  • the upper guiding arrangement comprises a guiding arm which is pressed outwardly relative to the weaving loom in a clockwise direction by said resilient means.
  • weaving loom of claim 6 in which the weaving loom has a shuttle and the other sides of the slot along which the member is displaceable extend at least substantially horizontally in the position of the picking stick at which the shuttle leaves the picker.
  • a weaving loom having upper and lower guiding arrangements for horizontally guiding a picker secured to the upper end of a picking stick for driving and for catching a shuttle and for coupling the picking stick with the sley frame
  • the improvement which comprises a securing means located adjacent to the lower guiding arrangement, said securing means providing an intermediate space that permits a movement of the lower end of the picking stick perpendicularly with respect to its longitudinal axis, and a resilient meanssecured to the upper guiding arrangement for providing a pretension which is such that in the rest position of the picking stick the intermediate space is positioned to allow movement of the lower end of the picking stick in a direction towards the center of the weaving loom when the picker is impinged on by the shuttle whereby reflections of oscillations tending to occur along the longitudinal axis of the picking 'stick are substantially prevented and said securing means providing a coupling between the picking stick and the sley frame which is substantially rigid in the opposite direction; said securing means comprising a guide member pivotally supported by the

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US450607A 1964-04-30 1965-04-26 Guiding arrangement for securing a picking stick on a weaving loom Expired - Lifetime US3333606A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH566964A CH413746A (de) 1964-04-30 1964-04-30 Einrichtung zur Befestigung der Peitsche einer Webmaschine

Publications (1)

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US3333606A true US3333606A (en) 1967-08-01

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US450607A Expired - Lifetime US3333606A (en) 1964-04-30 1965-04-26 Guiding arrangement for securing a picking stick on a weaving loom

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US (1) US3333606A (es)
BE (1) BE655835A (es)
CH (1) CH413746A (es)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US165408A (en) * 1875-07-13 Improvement in loom picking mechanisms
US1930080A (en) * 1931-06-23 1933-10-10 John G Bentley Parallel picker motion for looms
CH213882A (de) * 1939-01-20 1941-03-31 Saurer Ag Adolph Schützenantriebsvorrichtung mit Schläger.
GB910081A (en) * 1958-04-11 1962-11-07 Jean Picanol Camps Improvements in shuttle-picking means for looms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US165408A (en) * 1875-07-13 Improvement in loom picking mechanisms
US1930080A (en) * 1931-06-23 1933-10-10 John G Bentley Parallel picker motion for looms
CH213882A (de) * 1939-01-20 1941-03-31 Saurer Ag Adolph Schützenantriebsvorrichtung mit Schläger.
GB910081A (en) * 1958-04-11 1962-11-07 Jean Picanol Camps Improvements in shuttle-picking means for looms

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Publication number Publication date
BE655835A (es) 1965-03-16
CH413746A (de) 1966-05-15

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