摘要:
Interception of light, which is emitted by a light emitter positioned on one vertical side of the warp sheet, by the weft at the moment of picking motion is sensed by a light receiver positioned on the other vertical side of the warp sheet while cutting off luminous noises by the warp sheet and, after the photoelectric conversion, corresponding electric signals are given to a discrimination circuit so that the absence of weft at the time of the picking motion will cause instant interruption of the loom running.
摘要:
A nozzle positioner for a shuttleless loom having one or more nozzles for emission of weft-propelling fluid such as water jet picking purpose wherein three sets of thread engagements are provided so as to carry out multi-directional precise adjustment of fluid emission by the nozzles in a manner quite independent from direction to direction.
摘要:
A rocking-type weft feeler mechanism wherein the weft feeler is arranged to reciprocate intermittently and periodically parallel to the cloth-fell from picking to picking.
摘要:
A weft controller usable for a weft propellant fluid jet type weaving loom, whereon two sets of wefts are picked alternately, having two sets of control mechanisms for pulling back the wefts after picking, clamping the wefts during the pulling back and releasing the wefts during the picking and a single driving source for the two control mechanisms. Control actions of the two control mechanisms can be varied from each other as desired.
摘要:
A feeding device of filling yarns disposed to a shuttle box of a pirnless shuttle loom having at least one filling yarn supply source and shuttle having yarn-catching means. A yarn guide arm introduces the filling yarn from the supply source into a cavity of the shuttle in response to the rearward pivotation of a shuttle swell caused by the presence of the shuttle in the shuttle box while keeping the filling yarn out of the shuttle box when the shuttle is absent in the shuttle box. The feeding device is usable with a dobby or Jacquard mechanism of the loom. The yarn guide arm is put in an operable position intermittently and periodically according to signals transmitted mechanically, hydrostatically or electromagnetically from such mechanism.
摘要:
A method and apparatus for carrying out an automatic inspection of fabric quality concurrently with an advancing weaving operation by detecting the formed defect, memorizing the detected results with clear distinction as to kind, total number, formation rate and degree of the defects formed on the fabric, comparing thusly detected results with previously given data and, only when the result is not desirable, stopping the operation of the loom. Memorized results can be used for locating the formed defects in a subsequent defect retrieving process.
摘要:
An improved apparatus for forming reinforced selvages of a fabric on a shuttleless loom. A filling yarn inserted into a warp sheds from a given supply source by a reciprocating inserting carrier is positively cut by a cutting apparatus at a position slightly inside the selvage simultaneously with a positive restriction of yarn supply and the cut end of the yarn which remains is woven into the selvage. Cutting operation of the apparatus at a given moment is caused by a revolution of a programming cam synchronized with the crankshaft revolution. Fly back of a cut end of the yarn can be prevented by a warp yarn depresser disposed to the apparatus.