US3396754A - Drive for selvedge forming mechanisms - Google Patents

Drive for selvedge forming mechanisms Download PDF

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Publication number
US3396754A
US3396754A US548979A US54897966A US3396754A US 3396754 A US3396754 A US 3396754A US 548979 A US548979 A US 548979A US 54897966 A US54897966 A US 54897966A US 3396754 A US3396754 A US 3396754A
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United States
Prior art keywords
shaft
gear
drive
selvedge
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
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US548979A
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English (en)
Inventor
Scherillo Vittorio
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Nuovo Pignone SpA
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Nuovo Pignone SpA
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Publication date
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Publication of US3396754A publication Critical patent/US3396754A/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D03D47/46—Forming selvedges by selvedge shuttle or other device passing selvedge thread through loop of weft
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19879—Geneva

Definitions

  • a control device for operating the selvedge mechanism of a shuttleless loom of the type having a crankshaft which rotates once per pick, has a drive shaft, a driven shaft which operates the selvedge mechanism each time it is rotated, a first gear train for driving said driven shaft at the same speed as said crankshaft, a Geneva drive interposed between said drive and driven shafts and operative to intermittently drive a further gear train on alternate revolutions of said crankshaft, and means for selectively coupling said driven shaft to said first and second gear trains, respectively, to insert one selvedge loop for each pick, or for each alternate pick, respectively.
  • This invention relates to a device for controlling mechanisms for the formation of selvedges on a shuttleless loom in which weft threads, coming out of fixed bobbins placed outside the fabric, are brought into opposite sides of the shed by inserting needles and, more particularly, to a loom fitted with weft inserting and traction needles.
  • the device for the formation of such a selvedge consists of a mechanism comprising two needles, one which carries the selvedge sewing thread into the fabric shed, and is called the inserting needle, and the other which holds said thread so as to form a loop until the weft is beaten up and a loop is thus permanently formed.
  • the latter needle is called the takeup needle.
  • An object of the present invention is to provide a device for controlling the introduction, either continuous or alternate, of the binding thread into the selvedge by a mechanism which allows either a continuous or alternate movement of the two inserting and takeup needles, also permitting a rapid change between the two kinds of insertion.
  • FIGURE 1 is a fragmentary lengthwise sectional view of the control device made according to one embodiment of this invention.
  • FIGURE 2 is a cross-sectional view taken along the line 1-818 of the device shown FIG. 1.
  • FIG. 3 is a front elevational view illustrating schmaticall-y and fragmentarily one type of loom with which this invention is particularly adapted to be used.
  • the device comprises a housing 30 having an integral bracket 31 for bolting or otherwise securing the housing to the breast beam of a shuttleless loom adjacent one end thereof.
  • Journaled in a conventional manner in housing 30 to rotate about an axis parallel to the loom breast beam is a rotatable shaft 3, one end of which extends through a central partition 32 in housing 33.
  • Shaft 3 is actuated by the looms crankshaft, not shown in the drawing, by means of a couple of intermeshed bevel gears 1 and 2, solid with said crankshaft, and with shaft 3, respectively.
  • the shaft 3 rotates in turn, the gear 4, which is keyed to the shaft 3.
  • the gear 7 carries the pin 9, which is engaged in the slot 20 in the entraining ring 10 which is keyed to the shaft 8 by means of a key 22 for rotation with shaft 8, and for limited axial reciprocation thereon.
  • the drive of the gear 4 is transferred gear 5 to the gear 11, the latter gear being solidly aflixed to the planetary gear 5.
  • the gear 11 transfers its own drive to the spur gear 12, which has a number of teeth twice that of the gear 11 and is idle on the shaft -3.
  • the gear 12 is solid with the hub of a wheel 13, also rotatably mounted on the shaft 3. Wheel 13 carries two pins 14 that are angularly spaced apart degrees from one another.
  • the portion of the wheel 21 between opposite the pins 14 is a -degree half circle, which forms the motionlocking member for the Geneva wheel or Maltese cross 15.
  • Said wheel 13 will be rotated at a speed which is one half of that of the shaft 3.
  • the shaft 6 On the shaft 6 is rotatably mounted the four-slot Maltese cross 15 onto which the gear 16 is keyed.
  • the gear 13 brings the pins 14 successively in conventional manner into driving engagement with the slots of the Maltese cross 15 thus causing the latter to be rotated through 180 degrees for each revolution of the gear 13.
  • the semi-circular portion 21 of the gear 13 slides in conventional manner over one of the four circular arcuate recesses 24 formed in the Maltese cross, and prevents any motion thereof during the 180 degree path in which the pins 14 do not engage the slots, thus maintaining an exact positioning of the slots of the Maltese cross so that,
  • the pins 14 are enabled exactly to meet said slots.
  • the gear 16 which rotates with the Maltese cross, transfers its own drive to the gear 17, which has half the number of teeth of 16 and which is rotated idly on the shaft 8 for controlling the selvedge-forming mechanisms.
  • Gear 17 carries a pin 19.
  • pin 9 When ring 10 is shifted axially on shaft 8 to the right from the position shown in FIG. 1, pin 9 is disengaged from the slot and pin 19 is engaged with this slot. Ring 11 in such instance, is then rotated by pin 19 one revolution on each alternate revolution of the loom crank shaft.
  • Manual or any suitable means may be employed to shift the ring 111 axially from one to the other of its positions on shaft 8.
  • the entraining ring 10 only needs be displaced so to cause the slot 20, formed in the ring 10, to come into registry with the pin 19 jutting from the extension of the gear 17.
  • Applicants novel drive device thus forms an extremely compact and relatively inexpensive drive for operating the several selvedge devices 34 and 36, that are driven from the single shaft 8. This considerably reduces the overall cost of a loom of the type illustrated in FIG. 3; and also this device eases the selection of different types of selvedges.
  • the type of alternate insertion indicated above can. also be obtained with mechanisms which are equivalent to those indicated.
  • the entraining ring could be a suitably shaped sleeve.
  • the device affords the advantage, which is remarkable, that the needles need not be actuated during the revolution of the shaft in which the selvedge is not to be sewn.
  • a control device for the selvedge-forming mechanism of a shuttleless loom of the type having a crankshaft, which rotates one revolution for each pick of the loom, comprising a drive shaft,
  • said driven shaft is operative each time it is rotated one revolution to actuate said selvedge-forming mechanism
  • an idler shaft is interposed between said drive and driven shafts
  • said driving means comprises a pair of rotatable members on said driven shaft, and including first means connecting one of said members to said drive shaft for rotation thereby at the same speed as said drive shaft,
  • said coupling means includes means for releasably and selectively securing one of said members to said driven shaft selectively to drive said driven shaft intermittently and non-intermittently.
  • a second gear is secured on said idler shaft and meshing with said first gear
  • said one member is a third gear rotatable on said driven shaft and meshing with said second gear to be rotated thereby during rotation of said drive shaft,
  • a fourth gear is rotatable on said idler shaft
  • said other member is a fifth gear rotatable on said driven shaft and meshing with said fourth gear for intermittent rotation thereby.
  • a control device as defined in claim 3, wherein said means between said drive and idler shafts comprises a slotted Geneva wheel rotatable on said idler shaft and fixed to said fourth gear,
  • said coupling means comprises a pair of pins which are secured to the confronting ends of said third and fifth gears, respectively, and
  • a ring mounted on said driven shaft for rotation therewith, and for axial reciprocation between said third and fifth gears, between a first position in which one of said pins is engaged in a slot in said ring to couple its associated gear thereto, and a second position in which the other of said pins is engaged in said slot.
  • said cooperating wheel has thereon two of said pins angularly spaced from one another.
  • said cooperating wheel has thereon an axially extending, arcuate flange slidable in said recesses intermittently to secure said Geneva wheel against rotation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US548979A 1965-05-15 1966-05-10 Drive for selvedge forming mechanisms Expired - Lifetime US3396754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1093265 1965-05-15

Publications (1)

Publication Number Publication Date
US3396754A true US3396754A (en) 1968-08-13

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ID=11134677

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Application Number Title Priority Date Filing Date
US548979A Expired - Lifetime US3396754A (en) 1965-05-15 1966-05-10 Drive for selvedge forming mechanisms

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US (1) US3396754A (Direct)
BE (1) BE811168Q (Direct)
BR (1) BR6679439D0 (Direct)
DE (1) DE1535552B1 (Direct)
GB (1) GB1132913A (Direct)
NL (1) NL6606701A (Direct)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765196A (en) * 1986-11-05 1988-08-23 Sundstrand Corporation Intermittent motion transmitting and timing system
CN106521774A (zh) * 2016-12-26 2017-03-22 浙江越剑机械制造有限公司 一种高速剑杆毛巾织机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625833A (en) * 1949-12-31 1953-01-20 Gleason Works Geneva mechanism
US3181568A (en) * 1961-02-24 1965-05-04 Dewas Raymond Device for the formation of selvedges on looms
US3307593A (en) * 1962-06-26 1967-03-07 Dewas Raymond Loom having means for the formation of selvedges

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT236884B (de) * 1961-02-24 1964-11-10 Raymond Dewas An eine Webmaschine angebauter Leistenapparat
FR1361087A (fr) * 1963-06-24 1964-05-15 Machine à tisser comportant un dispositif pour la formation de lisières solides

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625833A (en) * 1949-12-31 1953-01-20 Gleason Works Geneva mechanism
US3181568A (en) * 1961-02-24 1965-05-04 Dewas Raymond Device for the formation of selvedges on looms
US3307593A (en) * 1962-06-26 1967-03-07 Dewas Raymond Loom having means for the formation of selvedges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765196A (en) * 1986-11-05 1988-08-23 Sundstrand Corporation Intermittent motion transmitting and timing system
CN106521774A (zh) * 2016-12-26 2017-03-22 浙江越剑机械制造有限公司 一种高速剑杆毛巾织机
CN106521774B (zh) * 2016-12-26 2018-04-27 浙江越剑智能装备股份有限公司 一种高速剑杆毛巾织机

Also Published As

Publication number Publication date
DE1535552B1 (de) 1972-03-09
NL6606701A (Direct) 1966-11-16
BR6679439D0 (pt) 1973-04-26
GB1132913A (en) 1968-11-06
BE811168Q (fr) 1974-06-17

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