US3301279A - Arrangement for securing a picking stick on a loom - Google Patents

Arrangement for securing a picking stick on a loom Download PDF

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Publication number
US3301279A
US3301279A US412479A US41247964A US3301279A US 3301279 A US3301279 A US 3301279A US 412479 A US412479 A US 412479A US 41247964 A US41247964 A US 41247964A US 3301279 A US3301279 A US 3301279A
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US
United States
Prior art keywords
picking stick
picking
guide body
stick
loom
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
US412479A
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English (en)
Inventor
Zollinger Hans
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
Original Assignee
Maschinenfabrik Rueti 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 Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Rueti AG
Application granted granted Critical
Publication of US3301279A publication Critical patent/US3301279A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/924—Coupled nut and bolt
    • Y10S411/929—Thread lock
    • Y10S411/938—Distorted thread

Definitions

  • the present invention relates to an arrangement for securing a picking stick of a weaving apparatus, i.e., a loom with a guide member.
  • the picking stick is conventionally connected to a guide member by means of one or more screws.
  • These devices have the further disadvantage that the said connecting screws are ruptured again and again during the operation of the loom.
  • the invention obviates these disadvantages by providing a securing means which resiliently couples the picking stick with a guide body to allow movement in the direction outward of or away from the center of the loom.
  • the invention has furthermore the advantage that, when the shuttle impinges on the picker, the lastphase of the shuttle-arresting process is improved, that is, the exact location of arrest thereof is subjected to smaller variations.
  • FIGURE 1 shows a partly sectioned'elevation of a picking stick securing arrangement according to the in-.
  • FIGURE 2 shows an elevation of a further embodiment of a picking stick securing arrangement
  • FIGURE 3 shows a section taken along the line IIIIII 11 is carried periodically towards the left, that is, toward the center of the loom, by a band 12 retained in its position by support member 30.
  • the returning shuttle 13 is caught by the picking stick 11 upon which it impinges at high-speed. This causes the picking stick 11 to impinge on a yieldingly arrangedreceiving member 29.
  • the picking stick 11 is, during around the periphery of the recess.
  • the guide member 15 comprises a guide body 16 carried by articulated rods 17 and 18 which are secured to strip 79' attached to the guide body.
  • the rod 17 pivotal. about a pivot 78 on the strip 79 and is pivotally secured for movement about pivot 19 on a machinewall 20 which is moved with the sley 14. correspondingly, the
  • rod 18 is secured for pivoting about a pivot 21 on the strip 79 and for pivoting about apivot 22 secured to the machine wal120.
  • the body 16 has rotational symmetry and has a trougha like recess 23 limited by a raised portion 24 which extends
  • Formed in the center of the lamina 25 is' an aperture in which there is arranged a screw 27 that extends through a corresponding bore in the picking stick 11 and that secures the lamina 25 firmly to the picking stick 11.
  • the lamina 25 is to a certain degree resilient toward the right (as shown in FIGURE 1) i.e., in a direction away from the center of the loom.
  • This resiliency allows the picking stick 11 to move outwardly from the guide body 16 to a direction substantially parallel to the axis of screw 27, i.e., in a direction corresponding substantially to the direction of I travel of the shuttle before being stopped by the picking
  • the arrangement of the lamina 25 and the guide body also provides a rigid connection between the picking stick and the guide body which prevents movement of the lower portion of the picking stick toward the guide body ifaforce acts on the picking stick from the right (as shown in FIGURE 1) in a direction parallel to theaxis of screw 27 toward the center of the,
  • the material used for lamina 25 is not a decidedly resilient material and also because the material has arelatively small thickness so that compression thereof is practically unnoticeable. Furthermore, it will, be recognized that the rigidity of the connection between the picking stick and the guide body in a direction towards the center of the loom, that is, towards the left as shown.v in FIGURE 1, serves to pfevent any loss of impact;
  • the shuttle 13 is driven over the sley 14 by the picking stick 11 and if the arriving shuttle 13' is caught by the picker 28, then mechanical oscillations are set up along the picking stick 11.
  • the securing arrangement described herein above and illustrated in FIGURE 1, for coupling the picking stick 11 with the guide body 16' has the advantage that the said oscillations'travelingalong the picking stick are absorbed by the securing means comprising the parts 15 25, and 27, or at least are reflected only to a considerably reduced extend.
  • the travel of the shuttle is made more uniform and the rest position of .the shuttle, after impinging on the picker 28, is subjectedv tovariations which are smaller than those in corresponding machines which have not been fitted with the above-- described securing means according to this invention.
  • the head offlthe screw 27 does not contact the guide body 16, but is spaced apart from the latter, so that there is no dire-ct coupling between these parts.
  • This feature in addition to the resilient coupling on the lamina 25, appears to be the reason why the device described either eliminates oscillations traveling to and fro along the picking stick, or at least considerably damps them.
  • rubber having fabric layers embedded in the longitudinal direction has been found to be suitable for the lamina 25.
  • FIGURES 2 to show further embodiments of the present invention.
  • the parts shown in the upper portion of FIGURE 1 lug strap 12, with support member 30, shuttle 13, sley 14, picker 28 and receiving member 29
  • the picking stick has again been given the reference numeral 11
  • the guide member the reference numeral 15
  • the guide body the reference numeral 16.
  • the articulated rods have again been designated 17 and 18 and the pivots 78 and 21.
  • the picking stick 11 is surrounded and retained by a flexible band or belt 31 made, for example, of leather.
  • the band 31 is secured on the guide body 16 by means of screws32a, 32b, and 320 and is joined to the picking stick by means of the screw 33. Due to the latter screw 33, the'position of the picking stick is fixed in the direction of the picking stick axis.
  • the slot 35 formed in the picking stick 11 at the place at which the screw 33 is located, serves for the exact adjustment of the picking stick in the vertical direction along its axis.
  • the horizontal slots 34a, 34b, and 340 formed in the band-31 permit the accurate adjustment of the coupling of the picking stick 11 with the guide body 16.
  • an intermediate member 36 which is made of substantially non-resilient material.
  • the coupling is also rigid perpendicular to the axis of the picking stick: in the direction towards the left as shown that is, toward the center of the loom.
  • the coupling is also rigid perpendicular to the axis of the picking stick: in the direction towards the left as shown that is, toward the center of the loom.
  • the shuttle is on the left-hand-side (designated S) of the picking stick 11.
  • S the left-hand-side
  • the shuttle When-the shuttle is received by the picker of the picking stick 11, the latter is displaced towards the right as shown that is, in the direction substantially corresponding to the travel of the shuttle before being received by the picker.
  • the picking stick 11 In consequence of the resilient coupling between the picking stick 11 and the guide member whichis provided by the band 31, the picking stick 11 is at least partially released from the intermediate member 36. Consequently, as in the case of the embodiment shown in FIGURE 1, oscillations along the picking stick are absorbed or greatly damped at the lower end of the picking stick and reflections of the oscillations are at least greatly reduced.
  • the intermediate member 36 may be made, for example, of leather, plastic, hard wood, or hard rubber.
  • FIGURE 4 is similar to that of FIGURE 1. According to FIGURE 4, however, 'the guide member 15 no longer comprises two articulated levers but a roller 42 and a slot 47 by means of which the guide member is retained on a plate '41 which is fast with the weaving-loom sley. Furthermore, the support body 16 does not have rotational symmetry,
  • a screw 52 for retaining the picking stick 11 on the strips 50a, 50b, and 500 is on the one hand mounted on a base 54 and on the other hand screwed fast to a retaining member 53.
  • the retaining member 53 extends within the trough 51 over a predetermined zone along the strip 50a but is spaced apart from the support body 16. Due to the tension of the contact zone between the retaining member 53 and the strip 50a, the advantage of a more balanced pressure loading of the strips 50a, 50b, and 590 is achieved.
  • the shuttle is also on the left-hand side (designated S) of the picking stick 11.
  • the embodiment according to FIGURE 5 again has a picking stick 11 and a guide member 15 carried on pivots 78 and 21 by articulation means, the guide member 15 comprising a support body 16. Disposed between the picking stick 11 and the support body 16 is an intermediate member 61 which is fast with the picking stick 11 and which is provided with a projecting raised portion 62.
  • the guide body 16 has, on the side facing the intermediate member 61, a recess fitting exactly onto the raised portion 62.
  • a pin 63 extendsthrough the picking stick 11, the intermediate member 61 and the guide body 16 for the purpose of coupling these parts.
  • the pin is provided at the end remote from the picking stick with a screw 64 by means of which a spring 65 is clamped under pressure against the guide body 16 coaxial with respect to the pin 63, so that the parts 16 and 61 are pressed together with mutual contact along their common contact face.
  • the contact On impingement of the shuttle from the side designated S of the picking stick (see FIGURE 5) the contact is interrupted between at least one part of the contact face of the parts 16 and 61, and is accompanied by yielding of the spring 65, thus providing a resilient coupling which assures the achievement of the advantages according to the invention.
  • the raised portion 62 and the associated recess in the guide body 16 provide for the exact maintenance of the position of the picking stick 11 in the direction of its axis.
  • the raised portions 62 it would also be possible to provide a multiplicity of raised portions along the contact faces of the parts 16 and 62 to constitute a contact arrangement; for example, the contact faces could be provided with grooves extending in the direction perpendicular to the plane of the drawings which would fit one upon the other.
  • the material used for the intermediate member 61 substantially what was stated in connect-ion with the intermediate member 36 in FIGURE 2 applies.
  • the material used for the lamina 25 or for the strips 50 can be fabric inserts bonded With rubber. Instead of this material, however, it would also be possible to use hard rubber.
  • Other examples of equally advantageous materials are a polyamide layer covered with chrome leather on both sides or a laminated body consisting of metal foils or metal plates layered one upon the other.
  • Exemplary of materials suitable for the band or strip 31 surrounding the picking stick 11 are, in addition to leather which has already been mentioned, fabric inserts bonded with rubber or a polyamide layer covered on both sides with chrome leather.
  • the securing means contemplated by this invention may comprise a variety of different types of resilient or flexible members, e.g., leather or plastic straps, springs or the like, which together with a bolt, screw or like fastening device serve to resiliently couple the picking stick to a guide body in a manner heretofore described. Accordingly it will be understood that the embodiments described and illustrated in this application are merely representative of the many types of securing means that may be employed by the subject invention.
  • a securing means that provides a resilient coupling between said picking stick and said .guide body to allow movement of the picking stick outwardly from said guide body in a direction substantally transverse to the longitudinal axis of the picking stick and corresponding substantially to the direction of travel of the shuttle before being stopped by said picking stick and that also provides a connection between said picking stick and said guide body which prevents substantial movement in a direction parallel to the axis of said picking stick and which is n'gid relative to said resilient coupling whereby said securing means provides a damping action with respect to material oscillations tending to occur along said picking stick during driving and stopping of said shuttle.
  • said securing means also provides a connection between said picking stick and said guide body which prevents substantial movement of the picking stick toward said guide body; the connection between said picking stick and said guide body being rigid relative to said resilient coupling.
  • said securing means comprises at least one resilient body exerting a force on the lower portion of said picking stick in a direction towards the guide body.
  • said intermediate layer comprises at least one material selected from the group consisting of leather, plastics, hardwood and hard rubber.
  • said securing means includes a pin which extends through said guide member, the intermediate layer, and the picking stick; a stop disposed at one end of said pin which is adjustable along the length thereof; and a spring arranged on said pin under pressure between said guide body and the stop on said pin.
  • the loom of claim 4 in which the contacting face of said intermediate layer has at least one raised portion extending perpendicular to the axis of the picking stick that fixes the mutual position of the picking stick and thelguide body in the direction of the axis of the picking stic '8.
  • said securing means includes at least one strap of resilient material secured to said guide body which surrounds and couples said picking stick to said guide body.
  • said strap is made of at least one material selected from the group consisting of leather, fabric layers bonded by rubber, chrome leather and a polyamide.
  • the guide body has a trough-like recess on the side adjacent to said picking stick, said securing means including a resilient lamina secured to said guide body and arranged in a plane over said recess and retaining means positioned over said recess for coupling said picking stick to said lamina in bearing contact, said retaining means being spaced from said guide body.
  • said retaining means comprises a retaining member bearing against said lamina over at least -a portion of said recess.
  • said resilient lamina is made up of at least one material selected from the group consisting of hard rubber, leather, fabric layers bonded with rubber, chrome-leather, polyamide and metal foils layers one upon the other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US412479A 1963-11-26 1964-11-19 Arrangement for securing a picking stick on a loom Expired - Lifetime US3301279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1449663A CH407004A (de) 1963-11-26 1963-11-26 Anordnung zur Befestigung einer Peitsche einer Webmaschine

Publications (1)

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US3301279A true US3301279A (en) 1967-01-31

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US412479A Expired - Lifetime US3301279A (en) 1963-11-26 1964-11-19 Arrangement for securing a picking stick on a loom

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US (1) US3301279A (de)
BE (1) BE655483A (de)
CH (1) CH407004A (de)
GB (1) GB1049639A (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529694A (en) * 1948-07-27 1950-11-14 Houdaille Hershey Corp Picker stick linkage
GB653120A (en) * 1948-07-14 1951-05-09 Albert Muller Haas Picking motions on looms for weaving
FR1100676A (fr) * 1954-05-15 1955-09-22 Dispositif de sécurité à échappement pour l'articulation de la base du sabre sur le métier à tisser
US2822827A (en) * 1955-10-26 1958-02-11 Draper Corp Loom parallel mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB653120A (en) * 1948-07-14 1951-05-09 Albert Muller Haas Picking motions on looms for weaving
US2529694A (en) * 1948-07-27 1950-11-14 Houdaille Hershey Corp Picker stick linkage
FR1100676A (fr) * 1954-05-15 1955-09-22 Dispositif de sécurité à échappement pour l'articulation de la base du sabre sur le métier à tisser
US2822827A (en) * 1955-10-26 1958-02-11 Draper Corp Loom parallel mechanism

Also Published As

Publication number Publication date
GB1049639A (en) 1966-11-30
CH407004A (de) 1966-01-31
BE655483A (de) 1965-03-01

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