Abstract: The speed of the movement of each weft thread through the shed is correlated with the speed of operation of the weaving machine by measuring the time occupied by movement of a weft thread through the shed, generating a first electrical signal which is a measure of such time, generating a second electrical signal which is a measure of a predetermined fraction of the time occupied by a weaving cycle of the machine, comparing said electrical signals and generating a third electrical signal which is a measure of the discrepancy between the first and second signals, and using the third signal to control one of such speeds in order to eliminate the discrepancy between the first and second signals.

Abstract: The fabric produced by a loom is wound on a drum which is driven in rotation from the fabric take-up roller by means of a friction coupling, the friction being adjustable by means of a regulating nut. A tensioning roller which is capable of displacement under the action of the tension of the fabric actuates a pawl by means of a mechanism comprising two elbowed levers and a connecting-rod. The pawl is capable of engaging in teeth carried by the regulating nut in order to lock the nut in position and tighten-up the friction coupling when the tension of the fabric decreases.

Abstract: The invention relates to the fastening of a leno device in shuttleless weaving machines. Leno devices generally are composed of two parts one behind the other, designed in the manner of rails and being mutually displaceable in the longitudinal direction for the purpose of shed-formation and are fastened to two consecutive heddle frames or the heddle slide bars thereof. To facilitate the fastening of the tightly arranged parts, only the upper fastening means on the forward part, that is the leno body supporting the standard thread needles is designed as an immobile fastener, whereas the remaining fastening points of the leno device are designed as quick-fit devices allowing a limited displacement along the heddle slide bars. The most diverse types of quick-fit means such as plug-in or spring-clip connectors, spring-hooks, clamping or snap-in connectors can be used.

Abstract: The nozzles which are distributed over the width of the weaving machine remain activated after the passage of a weft yarn and are deactivated simultaneously upon termination of picking. Picking can be performed with fluid at a relatively low pressure so that the compressor for delivering the fluid can be relatively small.

Abstract: A weft length measuring device comprising a weft storage drum supported against rotation and a weft winding member rotatable around the drum to wind a weft thereon is disclosed.According to this invention, the measuring device further comprises a length measuring control or retaining pin and a weft unwinding control pin arranged a pair at axially spaced positions in the weft storage drum and operated by a cam mechanism so as to alternately project out of the weft storage drum at appropriate times in the weft inserting cycle, and a weft transfer member arranged on the outer periphery of the weft storage drum to cause the weft for one weft insertion, the length of which has been measured by the rearwardly disposed rearward, length measuring pin, to be transferred toward the forward, weft unwinding control pin. During the weft inserting operation during which the weft wound on the drum is unwound, a succeeding weft for the next weft insertion can be continuously and exactly wound on the storage drum.

Abstract: The apparatus includes two retaining elements associated with the control elements, two actuating elements associated with the retaining elements, a shaft acting on the actuating elements in order to pivot the latter and to displace them in translatory motion, and an electromagnet which can be optionally energized and deenergized.The shaft is oscillatingly driven in accordance with the motion of the control element at the timing of the loom. The actuating element is brought into contact with, and out of contact from, the electromagnet independently of the control cycle and is displaced in the direction of the retaining element only when the electromagnet is not energized. The actuating element need therefore be displaced only once during the period of time defined by the clearance S, so that the operating speed of the loom can be increased.

Abstract: A weft yarn guide of an air jet loom comprises a base portion capable of being connected to a sley, a pair of guide members which are connected to the upper end of the base portion and which are forked to form a weft inserting opening therebetween, a base fluid passage formed within the base portion, and a plurality of fluid blowing holes formed on the upper portions of the guide members and communicated with the base fluid passage. The weft yarn guide further comprises a branching wall projected from the upper inner wall of the base fluid passage in order to branch air flow fed from the base passage into two flows, and a pair of branch passages formed within the guide members in order to communicate the base fluid passage with the fluid blowing holes, whereby the air flow is smoothly branched without causing substantial turbulence.

Abstract: A weft detaining device of a shuttleless loom, comprises a drum on which a weft yarn is wound predetermined times prior to a weft picking through a weft picking means, the drum being constituted by a plurality of separate and independent pieces, a support member on which the drum separate pieces are securely supportable, and a device for allowing the location of each drum separate piece to be movable relative to the support member so that the outer diameter of the drum is adjustable, thereby making possible changing a weft picking length by merely changing the location of each drum separate piece, without replacing the drum with the other drum having a different diameter or using any members to be mounted on the peripheral surface of the drum to adjust the outer diameter of the drum.

Abstract: A control module for a sewing machine includes a rectangular array of push-buttons which are slidably mounted for linear motion in a frame and include rearwardly extending portions in a single line engageable with cam followers slidably movable thereby into engagement with cams rotatable in the frame.

Abstract: A ribbon loom for manufacturing a ribbon tape or the like containing warp threads and weft thread loops inserted from one side of a warp shed. A first auxiliary thread is drawn through the weft thread loops and a second auxiliary thread disposed outside of the weft thread loops is knitted with each n-th stitch of the first auxiliary thread in order to secure the same. The ribbon loom comprises a weft thread insertion element, a knitting needle for tying the weft thread loops by means of at least one auxiliary thread and a thread guide for the second auxiliary thread constructed such that for knitting the second auxiliary thread it inserts such second auxiliary thread into said knitting needle, after the knitting needle has drawn a loop of the first auxiliary thread through the weft thread loop.

Abstract: A shuttleless loom for weaving a fabric comprises a weft inserting device for inserting a pair of successive loops of weft yarns simultaneously through respective superimposed warp sheds from one side thereof, and a selvedge-forming device arranged along the other side of the warp sheds for forming a knitting selvedge at one edge of the fabric being woven. The weft inserting device reciprocates along a first arcuate path in a first plane extending substantially parallel to the fabric. The selvedge-forming device reciprocates along a second arcuate path in a second plane extending substantially perpendicularly to the first plane so as to pass through a single loop of one of the weft yarns and catch the other weft yarn projecting out of the warp sheds.

Abstract: An apparatus is provided for guiding a weft yarn into the shed of a jet loom by a number of weft guiding members, each having an aperture with an opening. The weft guiding members are composed of a first group of weft guiding members of which the openings are of a relatively narrow width and formed in upper parts of the weft guiding members in the first group, and a second group of weft guiding members of which the openings are of a relatively broad width and formed in side parts of the weft guiding members in the second group.

Abstract: A weft thread-selection apparatus for a weaving machine or loom comprises a carrier or support element which oscillates or pivots in cycle with the weft thread-insertion frequency. The oscillatable support element carries at its free end a number of electromagnetic devices, for instance electromagnets corresponding to the number of thread infeed rods and is rotatably supported at its other end for pivotal movement about a shaft. This shaft simultaneously constitutes the pivot point for oscillatable or pivotal arm members, each of which is retained under the action of spring means in its preparatory position. Each of the oscillatable or pivotal arm members is hingedly connected at its free end with one of the thread infeed rods and each oscillatable arm member carries a magnet armature intended to cooperate in a coupling fashion with one of the electromagnets. The row of electromagnets extends below the oscillatable or pivotal arm members.

Abstract: An apparatus for guiding a weft or filling thread in the shed of a loom, the weft thread being driven by a flowing fluid medium, comprises two lamellae combs which can dip into and out of the warp threads. The lamellae or equivalent plate-like guide elements of the lamellae combs each possess a throughpass opening for guiding the weft thread and a thread exit or outlet opening. When the lamellae are in a position completely immersed in the shed they are interleaved or shoved into one another and form a guide channel for the weft threads, this guide channel being coherent or continuous in the weft insertion direction. Hence, the thread exit or outlet openings are sealed, so that the guide channel also is continuously closed in radial direction.

Abstract: The invention relates to a woven all-synthetic monofilament dryer fabric for use in a paper-making machine. The fabric is constituted by a belt woven with warp and weft strands with the warp strands extending in the machine direction. The belt is interconnected at opposed ends by a woven single pintle pin seam to form an endless belt. The warp strands in at least rewoven end portions of the belt are flattened strands.

Abstract: An automobile transmission including a peripheral wall having an inner surface comprised in a cross-section of a plurality of curved portions which are continuous in series with each other through inwardly projecting node portions. The configuration of the casing provides a structure of high rigidity so that it is effective to suppress the vibrations of the casing wall and consequently the noise caused by such vibrations. The casing wall is formed with brackets for supporting the reverse idle gear shaft in the vicinity of one of the node portions. This arrangement is also effective to suppress vibrations.

Abstract: A process for making a woven ribbon having stitched selvages on a ribbon loom by moving a single weft inserting member crosswise in two directions. The weft inserting member inserts a first auxiliary thread along each selvage and alternately drives a second auxiliary thread in the opposite direction outside the selvage.

Abstract: The mixing tube of the injector is narrowed at its exit end in at least one direction while retaining the cross-sectional area equal to that of the remainder of the tube. Thereby the directional stability of the thread is improved, while the friction surface presented by the tube to the thread is only slightly increased, exclusively at the tube extremity. The narrowing may be done by flattening the mixing tube end.

Abstract: The edge yarn clamp for a weft yarn is provided with a push-on resilient shoe on the metal clamping jaw. The resilient shoe includes a curved clamping cap on a rearward part to reliably retain the shoe in place while permitting an ease of fitting-on.

Abstract: A picking channel for pneumatic jet looms with auxiliary blowing sections disposed across the weaving width and consisting of at least three auxiliary blowing nozzles the relative positions of the axes of which being those of skew lines with the axis of the first auxiliary blowing nozzle crossing the axis of the weft thread under insertion. The axes of the other auxiliary blowing nozzles pass said axis of the weft thread under insertion of the outside, in the direction of the axis of the first auxiliary blowing nozzle. The various dispositions of both the auxiliary blowing sections and nozzles insure reliable weft insertion, and economic exploitation of the energy of the carrier medium and, consequently, a greater weaving width.