Abstract: A process and an apparatus for reducing the length of the lead-in thread in double-cylinder circular hosiery-making or knitting machines in which the thread, fed by a corresponding thread guide, is clamped at its end, before knitting begins, by a thread cutting and clamping device which laterally faces the needle cylinders of the machine downstream of the position of the thread guide, relative to the direction in which the needle cylinders rotate about their own axis, with respect to the thread guide and to the cutting and clamping device. The process consists in keeping the thread clamped by the cutting and clamping device even after the thread has been taken up by the needles at the beginning of the knitting process, and in cutting the portion of thread which, at the beginning of the knitting process, lies between the first needle that took up the thread and the point where the thread is clamped in the cutting and clamping device.

Abstract: A single-cylinder circular machine for knitting, hosiery or the like, with a device for actuating the cutter mounted on the dial comprises: a needle cylinder, which can be rotationally actuated about its own axis; a dial, which is arranged above the needle cylinder and is supported so that it can rotate about its own axis; and a cutter for cutting the yarns, which is mounted coaxially on the dial and is provided with cutting teeth arranged around its own axis. The machine has a device which comprises an actuation for the cutter with a rotary motion about its own axis with a rotation rate which can be diversified from the rotation rate of the needle cylinder, in order to vary the length of the trailing portion of yarn that lies between the last needle of the machine taking up the yarn and the blade cooperating with the cutter in cutting the yarn.

Abstract: A circular knitting machine for knitting patterned knitted fabrics (19) contains a preferably rotatable needle carrier (1) having knitting needles (3) distributed along a needle ring, selection devices (6) for selection of the knitting needles (3) in accordance with the pattern, a plurality of yarn guides (17) attached to the selection devices (6) to feed yarns (18) to the knitting needles (3), whereby these yarn guides (17) are arranged so that the yarns (18) are picked up by selected knitting needles (3) and tied into the knitted fabric (19) but passed over by non-selected knitting needles (3) with the formation of yarn floats, and at least one cutting device located within the needle ring for cutting through yarn floats of a given minimum length such that yarn ends on the fabric side and the yarn guide side are formed and the yarn ends on the yarn guide side remain in a position in the catchment area of the selected knitting needles that intersects with the needle ring.

Abstract: A combined weft thread clamp and cutter apparatus for an air jet loom includes a cutter (3) for cutting a weft thread (1) and a clamp (4) for clamping the weft thread (1). The cutter includes a fixed cutter element (10) and a movable cutter element (9) that is movable relative to the fixed cutter element. The clamp includes a first clamp element (14) and a second clamp element (13). The clamp (13, 14) and the cutter (9, 10) are arranged next to each other, and a spacing distance (8) between the clamp (13, 14) and the cutter (9, 10) is adjustable. The clamping surface of at least one of the clamp elements (13, 14) can be an elastically yielding surface.

Abstract: A device for cutting threads in circular stocking knitting machines, which includes a circular saw having teeth on its periphery and at least one knife. Each tooth of the saw has a cutting zone away from and moved back with respect to the front part. The front part is intended for gripping and dragging along the thread towards the knife. Between the front part and the cutting zone of each tooth, there is provided a notch or step, which is intended for holding a piece of thread without being intercepted by the knife. The cutting zone interacts with the knife for cutting the thread away from the front part, when the thread rests on the cutting zone.

Abstract: A binding mechanism for holding yarns of circular knitting machines during yarn changeover and when yarns are moved to inactive positions includes an elastomeric member having deformable when engaged with a flat surface and having pliable surfaces for simultaneously receiving and individually gripping multiple yarns, the member being of silicone rubber having a durometer hardness range of 45-70.

Abstract: Thread used in double-cylinder circular knitting machines is cut by locating a stationary cutting knife near a space between the cylinders. A saw having perpendicularly arranged teeth is positioned on an outer ring at the top of one of the cylinders. Thread guides move the thread from a pneumatic nozzle to the teeth of the saw. The saw engages the thread and moves the thread for knitting to needles on the cylinder. The saw continues to move the thread from the nozzle to the knife in order to be severed. After severing, the guide is returned and the thread engaged between the needles is disengaged and taken by the saw to the knife to be cut and taken in by the nozzle.

Abstract: The circular knitting machine, for manufacturing open fabric, has a thread clamping and cutting device arranged inside the needle cylinder and there is a thread engagement element which is controllably movable from the inside of the needle cylinder toward the outside, and vice versa, in the needle cylinder region which faces the dial, so as to engage the threads at the end of their knitting and so as to carry the threads to undergo the action of a presser element, and a cutting element.

Abstract: A thread cutting and holding device in double-cylinder circular knitting machine has a movable cutting plate, stationary cutting blade and pressing finger. Stationary and movable plates are arranged between the cutting plate and the pressing finger. Both movable plates are controlled by one lever. The stationary holding plate is arranged between the movable plates and is provided at its operative end with a V-shaped cutout, in which the threads are collected and held be the movable holding plate. The movable holding plate is for this reason provided with a side cutout with transverse holding edge.

Abstract: The knitting machine has a device for raising and lowering the platen, which comprises a frame, associated with the supporting structure of the machine, which supports the platen above the needle-bearing cylinder. The machine also comprises at least one guiding column for sliding said frame with respect to the supporting structure of the machine along a direction parallel to the axis of the needle-bearing cylinder and a step motor which is connected to an electronic member for controlling the machine and which acts on moving means connected to said frame and to the supporting structure to perform the above described sliding according to a preset program.

Abstract: A device for selecting the needles on the dial plate of single cylinder circular knitting machines for the manufacture of ribbed fabric, said device comprising a coaxial sleeve secured on top of the dial plate and revolving with the dial plate and, as many swinging elements or jacks as there are needles on the dial. Each jack slides in a vertical groove which is defined in the sleeve and which coincides with a needle groove in the dial. Slides are selected to vertically displace the jacks from an operating position into a rest position. A pinned drum controls selectors and cams to control the swinging motions of the jacks when they are in operating position in order to control the radial displacements of the corresponding needles by means of the thus operated jacks.

Abstract: Knitting machine for performing knits having a beginning and an end, which has at least one needle bed in which knitting needles are mounted for extension and retraction, which has a plurality of thread carriers running successively along an endless path and having at least one thread inserter and one thread gripper, the thread carriers being transportable through a working section and through a return section for the return transport of the threads from the end of the knit to the beginning of the knit for the insertion of threads into select needles, and having furthermore at least one thread clipper for severing the threads after they have been worked by the last active needle each time and after they have been gripped in the corresponding thread gripper, and having a control apparatus suitable for varying the knit width for the opening or closing of the thread grippers for the purpose of the release or of the gripping of the thread ends produced by the clipping device and carried by the thread carriers in

Abstract: An improved cutting system for knitted fabrics, wherein a cutting element is mounted on a knitting machine for movement in unison with the needle and positioned to cut the knitted fabric to a predetermined dimension at least one cycle after the knitting cycle.

Abstract: The clamping means, which has a clamping position and an open position for material in thread, ribbon or strip form, has an element which, in accordance with the invention, is resiliently bent double hairpin-wise in a first plane and has two arms of substantially equal length, the end of the first arm being bent double to a U shape in a second plane such that the gap between the two limbs of the U formed by this bend is smaller than the cross section of the portion of the free end of the second arm which cooperates with it, and the ends of the two arms being offset from one another parallel to the second plane such that, in the closed position, the free end of the second arm engages both limbs of the U in the area of the gap.

Abstract: Pneumatic yarn feed and yarn change mechanism has a plurality of yarn feed paths and a plurality of control elements for controlling passage of yarn for each of these paths independently. Flow of fluid through selected yarn feed passage when the control element is in a feed position propels leading end of yarn to knitting needles. Movement of control element out of feed position to trap position causes yarn to be severed and trapped and held in readiness for subsequent selection.In a preferred embodiment side by side control plates are moved pneumatically by pistons arranged one above the other.

Abstract: Apparatus for binding the severed end portion of a tensioned elastomeric yarn on a circular knitting machine including a binder element fixably mounted up on the machine dial and having a free end portion which normally engages the dial. The free end portion of the binder element has a blade-like edge which is automatically displaced in a first direction by the elastomeric yarn when the yarn is in the knit position and again prior to severing the yarn from the knitted fabric. The retractive forces of the tensioned elastomeric yarn automatically cause the blade-like edge of the binder element to be displaced to wedge the yarn against the dial upon severing the yarn by holding the yarn in position for subsequent reintroduction to the needles.

Abstract: A circular knitting machine having a program or pattern drum coaxial and underlying the needle cylinder. The pattern drum is advanced intermittently and selectively by pawls engaging ratchet wheels of different pitch on the drum, with the pawls driven with different strokes through shafts parallel with the cylinder axis and oscillated by followers riding on cams on the needle cylinder, the followers being selectively and independently displaceable by electro-mechanical units to produce intermittent operation of the pattern drum. Cams on the drum act through followers mounted on shafts coaxial with the cylinder axis to oscillate operating arms for controlling radial cams for needle and jack butt manipulation, for controlling an arm with an inclined surface for displacing the cylinder to adjust the length of the loop being knit, and for controlling other instrumentalities of the machine.

Abstract: There is disclosed a yarn cutting and gripping device of the type including a plurality of strip-like elements lengthwise movable adjacent a fixed blade and having a hooked end for cutting the yarn in cooperation with the fixed blade. The strip-like elements are resiliently urged against the fixed blade by a block arranged at the side of the strip-like elements opposite to the fixed blade. Each element has a lug extending below the hooked end substantially parallel thereto and recessed with respect to the cutting plane so as to seize the yarn and cause it to form a loop about this lug before and after being cut by the hooked end, thus increasing the retaining force of the cut yarn. The strip-like elements may be formed by two parallel parts, the one having the hooked end and the other the projecting lug.

Abstract: A ring saw apparatus adapted to be supported between the welting dial and the dial pad of a circular knitting machine, including a discrete ring or annular saw blade having substantially flat or planar opposed surfaces and an annular ring carrier adapted to be detachably secured to the saw blade and rotatably mounted upon the annular bearing surface of the dial pad. The carrier and saw blade are readily disengaged to facilitate sharpening the saw blade.

Abstract: An attachment having a knitting machine including at least two toothed members slidable in relationship to one another such that when the teeth are aligned yarn receiving openings are presented and on sliding the members relative to one another yarns within the yarn receiving openings are gripped by adjacent teeth.

Abstract: Apparatus for binding the severed end portion of a tensioned elastomeric yarn on a circular knitting machine including a binder element fixably mounted up on the machine dial and having a free end portion which normally engages the dial. The free end portion of the binder element has a blade-like edge which is automatically displaced in a first direction by the elastomeric yarn when the yarn is in the knit position and again prior to severing the yarn from the knitted fabric. The retractive forces of the tensioned elastomeric yarn automatically cause the blade-like edge of the binder element to be displaced to wedge the yarn against the dial upon severing the yarn by holding the yarn in position for subsequent reintroduction to the needles.