Patents Assigned to Lonati S.p.A.
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Patent number: 5966968Abstract: 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.Type: GrantFiled: July 9, 1998Date of Patent: October 19, 1999Assignee: Lonati S.p.A.Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
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Patent number: 5907960Abstract: Method for manufacturing a tubular hosiery item with a closed end, with a single-cylinder circular knitting machine having a pivoting semicircular plate having radially sliding hooks, including alternately rotating the needle cylinder for moving the needles of a first half of the needle cylinder and the hooks of the overlying semicircular plate to pass in front of a feed of the machine; the extracted hooks forming a support for a thread dispensed at the feed, actuated needles being actuated so as to take up the thread and be alternated with inactive needles, subsequently swapping the actuated needles with the inactive needle when the motion of the needle cylinder is reversed; a first needle of the needles of a second half of the needle cylinder is also made to pass in front of the feed to take up the thread, in order to allow both end hooks of the hooks of the semicircular plate to engage the thread; retracting the hooks of the semicircular plate so as to retain the engaged thread; forming heel knitting withType: GrantFiled: December 4, 1997Date of Patent: June 1, 1999Assignee: Lonati S.p.A.Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
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Patent number: 5855122Abstract: A hook for single-cylinder circular knitting or stocking machines with cylinder and circular or semicircular plate. The hook comprises an elongated and flat hook body which has a claw-shaped longitudinal tip. The hook also comprises an elastic-lamina element which is associated with a lateral face of the hook body and has a claw-shaped tip which faces the claw-shaped tip of the hook body. A passage is formed between the lamina element and the hook body and is suitable to be crossed by a needle of the knitting or stocking machine; the claw-shaped tip of the lamina element can flex elastically towards and away from the hook body, respectively to close the claw-shaped tip of the hook body and to allow the extraction of the needle inserted in the passage towards the claw-shaped tip of the hook body.Type: GrantFiled: June 9, 1997Date of Patent: January 5, 1999Assignee: Lonati S.p.A.Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
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Patent number: 5823013Abstract: A method for producing tubular components, particularly for manufacturing hosiery or other items of clothing with a shaping effect by using circular knitting or hosiery-making machines, and a tubular component obtained with the method. The method consists in forming, during the production of the tubular component, certain portions of rows of knitting, for some rows, with a greater loop length than the preceding rows, the subsequent rows, and the remaining portions of the rows themselves, in order to form at least one lateral pouch along the extension of the tubular component.Type: GrantFiled: April 8, 1997Date of Patent: October 20, 1998Assignee: Lonati S.p.AInventors: Francesco Lonati, Tiberio Lonati, Ettore Lonati, Fausto Lonati
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Patent number: 5816075Abstract: A single-cylinder circular hosiery-making or knitting machine particularly for manufacturing tubular items closed at one of their axial ends, having a needle cylinder and a circular plate which coaxially faces the needle cylinder in an upward region. The circular plate is composed of two halves, a first half of which is pivoted to a first supporting structure about a diametrical axis which is substantially parallel to the diametrical connecting plane of the two halves of the circular plate. The first half of the circular plate is also provided with radial grooves which accommodate pairs of hooks which can be actuated along the corresponding groove so as to engage or release loops or portions of loops of knitting formed by the needles of the needle cylinder.Type: GrantFiled: March 19, 1997Date of Patent: October 6, 1998Assignee: Lonati S.p.A.Inventors: Francesco Lonati, Ettore Lonati, Fausto Lonati, Tiberio Lonati
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Patent number: 5142886Abstract: The present machine has a device for repeating the selection of the needles at least at one thread feed, which includes a memory element arranged proximate to the lower end of the selectors, which can oscillate in a plane radial to the needle cylinder by virtue of the action of selection levers arranged upstream of a thread feed of the machine, according to the direction of the rotation imparted to the needle cylinder about its own axis. The selectors can individually oscillate in a radial plane with respect to the needle cylinder from an extraction position, whereat they protrude from the needle cylinder with a main heel so as to engage actuation cams arranged about the needle cylinder, to a sunk position, whereat they do not engage the cams.Type: GrantFiled: October 19, 1990Date of Patent: September 1, 1992Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 5081854Abstract: The process consists in producing a body of knitting having a substantially tubular extension, with portions which are to be removed and a remaining part. The remaining part is knitted with a plurality of threads. The portions which are to be removed are knitted with fewer threads than the remaining part.Type: GrantFiled: March 5, 1990Date of Patent: January 21, 1992Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 5056339Abstract: In the process a first thread differing in color with respect to a second thread which constitutes the stocking is fed by a thread guide alternatively to the second thread to a preset number of needles during the formation of a row of stitches. The first thread, which constitutes the design, is cut proximate to the ends of the portion of the row knit by the preset number of needles and the ends of the thread are moved towards the inside of the needle cylinders by means of a flow of air.Type: GrantFiled: May 9, 1989Date of Patent: October 15, 1991Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 5018369Abstract: The device has a box-like supporting structure which slidably accommodates at least one slider arranged laterally facing the needle cylinder of the machine and is movable, by virtue of the action of a linear motor, along a direction which is radial to the needle cylinder. The slider is rigidly associated, with its end which protrudes out of the box-like structure, with a knitting cam which is selectively engageable with needle actuation elements by moving the slider. The slider is constituted by a shaft which is slidably supported, along its axis, by the box-like structure by means of a first bearing which is arranged inside the box-like structure and has balls partially accommodated in longitudinal seats defined on the outer surface of the shaft and in seats correspondingly defined on the inner surface of a bush which extends around the shaft and is prevented from rotating about its axis.Type: GrantFiled: December 14, 1989Date of Patent: May 28, 1991Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4932226Abstract: The device for locking selectors on the bottom of the needle cylinder grooves in circular knitting machines has a locking element which extends around the needle cylinder of the machine proximate to the lower end of the selectors, accommodated in the grooves of the needle cylinder. The locking element is controllably movable in a direction substantially parallel to the axis of the needle cylinder from an inoperative position, wherein the locking element is arranged substantially below the lower end of the selectors to allow the lower end of the selectors to perform an extraction movement from the related groove in a radial direction with respect to the needle cylinder, to an operative position, wherein at least one portion of the locking element is arranged above the lower end of the selectors for their retention in an inserted position in the related grooves, and vice versa.Type: GrantFiled: August 10, 1988Date of Patent: June 12, 1990Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4856300Abstract: The device is provided with a plurality of selection levers pivotally connected to a support structure and having an end adjacent to the needle cylinder in the zone of the selectors. Actuators oscillate the selection levers in a plane parallel to the extension of the selectors, from an operative position, whereat the end is located at an intermediate level between the selector butts to avoid interference therewith, to an operative position whereat the end is located at the level of the selector butts to interfere therewith. Each selection lever has a first portion and a second portion which are spaced apart, extend parallel to the axis of their pin, and are connected together by cross-members defining a seat for the pin. The first portion has, at its intermediate part, a plate which extends in the direction of the selector butts, and which constitutes the end engageable therewith.Type: GrantFiled: February 8, 1988Date of Patent: August 15, 1989Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4838049Abstract: The device comprises a plurality of superimposed selecting levers, individually pivoted in an intermediate portion thereof to a supporting structure and oscillatable in a plane substantially parallel to the extension of the plurality of selecting levers. The selecting levers are oscillatable from a first position, in which one of their ends is at a level which is intermediate between the heels of the selectors so as to avoid interfering therewith, to a second position, in which this end is at the level of the heels of the selectors, so as to interfere therewith and push the related selectors to an inoperative position. The other end of the selecting levers is shaped, at least for a portion, like a flat blade which extends in a plane substantially perpendicular to the extension of the plurality of selecting levers, the blade-like portion having its two opposite faces engaged with actuating levers for the oscillation of the selecting levers.Type: GrantFiled: May 4, 1988Date of Patent: June 13, 1989Assignee: Lonati S.P.A.Inventor: Francesco Lonati
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Patent number: 4790154Abstract: The device comprises a plurality of superimposed selection levers, individually pivoted at an intermediate portion thereof to a supporting structure. The selection levers have an end facing the needle-bearing cylinder in the region of the selectors and are oscillable on a plane parallel to the extension of the plurality of selection levers to interfere or not interfere with the heels of the selectors. An actuating lever acts on the other end of each selection lever, is pivoted at an intermediate portion thereof to a frame, and can oscillate on a plane parallel to the plane of oscillation of the selection levers. For the oscillation of the actuating lever, two electromagnets, arranged on opposite sides with respect to the fulcrum of the actuating lever and alternately operable, are employed.Type: GrantFiled: June 15, 1987Date of Patent: December 13, 1988Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4719768Abstract: The machine comprises: a space defined between the needle cylinder and cylinder holder, and in communication with the delivery conduit of a feed pump, delivery ports defined on the needle cylinder for connecting the space to the outside, a collector pan located in the proximity of the needle cylinder base and supplying an oil collecting case in communication with the feed conduit of the cited pump. The delivery conduit is in communication with the cited space through the needle cylinder bearing and the oil collecting case houses the gear train for transmitting the rotary motion to the needle cylinder. The delivery ports are provided on the bottom of the needle cylinder flutes which accommodate the needles and jacks. Thus, thorough and continuous lubrication of the machine main members is achieved.Type: GrantFiled: December 5, 1985Date of Patent: January 19, 1988Assignee: LONATI S.p.A.Inventor: Francesco Lonati
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Patent number: 4718254Abstract: The machine comprises a plurality of selectors which are slideably accommodated in the grooves of the lower needle-bearing cylinder and act each with its upper end on a transfer sinker, or slider, for moving the matching needle. The machine has the peculiarity that in a same groove of the lower needle-bearing cylinder is accommodated, proximate to the upper end of the selector, a pusher element, controllably engageable with the lower end of the matching transfer sinker. The pusher element has the possibility of being operated independently from the selector accommodted in the same groove, since it is provided with a heel which is engageable in suitably defined tracks on the skirt of the cams of the lower needle-bearing cylinder.Type: GrantFiled: November 28, 1986Date of Patent: January 12, 1988Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4718256Abstract: 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.Type: GrantFiled: October 7, 1986Date of Patent: January 12, 1988Assignee: LONATI S.p.A.Inventor: Francesco Lonati
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Patent number: 4718253Abstract: The circular knitting machine has a protective screen in the processing area which comprises a containment body extending around and above the needle-bearing cylinder to define a chamber, containing the needle-bearing cylinder and being isolatable from the environment. The containment body has a lateral surface provided in at least two parts, of which at least one is movable with respect to the other for opening or closing said chamber; holes being also provided for the passage of the threads passing through the containment body for feeding the machine.Type: GrantFiled: October 7, 1986Date of Patent: January 12, 1988Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4708002Abstract: The device includes a slide movable in a substantially perpendicular direction to the axis of the needle cylinder and being rigidly associated with a knitting cam selectively engageable with the needle butts, and a step motor actuated by an electronic machine control. The step motor is connected to a drive cam which engages with a cam follower carried on the cited slide to produce a preset displacement of the knitting cam with respect to the needle cylinder on account of the knitting cam engaging selectively the needle butts.Type: GrantFiled: December 5, 1985Date of Patent: November 24, 1987Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4580420Abstract: For controlling selection of needles, intermediate jacks or pattern jacks in a circular knitting machine there is provided a stepwise advanced pattern drum selectively acting on selection slides which interfere with butts of needles, intermediate jacks or pattern jacks. The drum is advanced by a pawl pivoted to a rocking lever controlled by a cam profile the axis whereof is different from the axis of the needle cylinder. The cam is rotated at a speed timed to that of the needle cylinder. The cam has two different profiles at different heights for acting on the lever and may be provided with additional superposed profiles for direct action on the selection slides.Type: GrantFiled: November 1, 1982Date of Patent: April 8, 1986Assignee: Lonati S.p.A.Inventor: Francesco Lonati
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Patent number: 4567737Abstract: For adjusting loop density in a circular knitting machine there is provided a step motor arranged below the needle cylinder and having a threaded shaft threadably engaging one end of a lever pivoted to a stationary structure of the machine. The free end of the threaded shaft abuts against a rotatable stop supported by the stationary portion of the machine, and the housing of the motor is prevented from rotating with respect to the lever. The opposed end of this lever supports a cylinder holder. Rotation of the threaded shaft of the step motor which is controlled by a programming member causes a pivotal movement of the lever and thus a raising or lowering movement of the needle cylinder to vary the loop density.Type: GrantFiled: March 14, 1983Date of Patent: February 4, 1986Assignee: Lonati S.p.A.Inventor: Francesco Lonati