Pivoted Patents (Class 66/106)
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Patent number: 10287715Abstract: A circular knitting machine (1) for knitwear or hosiery, comprising a bearing structure, a needle-bearing organ (3) and a plurality of mobile needles (N) for producing a knitted fabric; a plurality of flanked stitch-forming slots (5) is defined in an external surface (4) of the needle-bearing organ (3), each of which slots movably houses a respective needle actuable with alternating motion along the relative stitch-forming slot. The needle-bearing organ is superiorly provided with a knit-forming plane (P) destined to restingly receive portions of knitting situated between two contiguous needles (N).Type: GrantFiled: February 18, 2015Date of Patent: May 14, 2019Assignee: SANTONI S.P.A.Inventors: Ettore Lonati, Fausto Lonati
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Patent number: 9010156Abstract: In the case of a single circular knitting machine consisting of a central rotatable needle cylinder (Z), around which a sinker ring (PR) comprising sinkers (P) as well as stationary cam systems (S) are arranged, which act on the needles (1), which are in each case assigned to the sinkers (P) and which can be moved vertically up and down, so as to replace the pitches, which hit one another rigidly, with a sinker grid system, which is flexible per se, which is automatically oriented in the needle gaps, a rocker (44) comprising an upper and a lower control bump (45) being provided in each case on the end of the sinkers (P), which is spaced apart from the needle, the sinker ring (PR), at the end below the sinkers (P), which is spaced apart from the needle, is embodied as a pivot point projection (40) comprising pivot point slits (41), in which the sinkers (P) are accommodated with their pivot inlet (43) so that they are capable of being tilted and the sinkers (P) being are laterally fixed in the needle gaps withType: GrantFiled: December 15, 2011Date of Patent: April 21, 2015Assignee: Hugo Kern & Liebers GmbH & Co. KGInventor: Ulrich Hoffman
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Patent number: 8468855Abstract: A downward pressing mesh mechanism and sinker thereof for flat knitting machines in which the downward pressing mesh mechanism includes a needle seat containing a bearing surface to hold a plurality of sinkers and knitting needles separated by spacers and a cam holder located above the sinkers to hold a cam. The cam has a guide track to drive the sinkers swinging. The spacers are vertically run through by a bracing shaft at a lower side. Each sinker includes a yarn pressing portion to press a yarn to form a mesh, a swing guide portion driven by the guide track and a shaft rotating recess to couple with the bracing shaft. The sinker thus structured is simpler and durable, hence can be produced and assembled, or repaired and replaced easier and faster. Thus manpower and material costs can be reduced, and product prices also are decreased to meet market requirements.Type: GrantFiled: September 16, 2011Date of Patent: June 25, 2013Assignee: Pai Lung Machinery Mill Co., Ltd.Inventors: Yi-Chen Chen, Kai-Ying Cheng, Jian-Hao Peng
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Publication number: 20130067962Abstract: A sinker control apparatus for flat knitting machines located on a transverse board over a plurality of knitting needles to drive parallel sinkers hinged between the knitting needles to rotate. The sinker control apparatus includes a base, a linked movement portion located on the base to perform driving movements, a first control cam and a second control cam hinged on the linked movement portion, and a switching portion coupled with the linked movement portion. The switching portion includes at least one connection rod connecting to the linked movement portion, a switching seat coupled on the connection rod and an elastic element coupled around the connection rod to provide a butting force to the switching seat towards the transverse board. The switching seat has a magnetic attracting portion at one side facing the transverse board to attract the transverse board magnetically.Type: ApplicationFiled: September 19, 2011Publication date: March 21, 2013Inventors: Yi Chen CHEN, Kai Ying Cheng, Jian-Hao Peng
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Publication number: 20130067964Abstract: A downward pressing mesh mechanism and sinker thereof for flat knitting machines in which the downward pressing mesh mechanism includes a needle seat containing a bearing surface to hold a plurality of sinkers and knitting needles separated by spacers and a cam holder located above the sinkers to hold a cam. The cam has a guide track to drive the sinkers swinging. The spacers are vertically run through by a bracing shaft at a lower side. Each sinker includes a yarn pressing portion to press a yarn to form a mesh, a swing guide portion driven by the guide track and a shaft rotating recess to couple with the bracing shaft. The sinker thus structured is simpler and durable, hence can be produced and assembled, or repaired and replaced easier and faster. Thus manpower and material costs can be reduced, and product prices also are decreased to meet market requirements.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: PAI LUNG Machinery Mill Co., Ltd.Inventors: Yi Chen CHEN, Kai Ying CHENG, Jian Hao PENG
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Patent number: 8397541Abstract: A sinker control apparatus for flat knitting machines located on a transverse board over a plurality of knitting needles to drive parallel sinkers hinged between the knitting needles to rotate. The sinker control apparatus includes a base, a linked movement portion located on the base to perform driving movements, a first control cam and a second control cam hinged on the linked movement portion, and a switching portion coupled with the linked movement portion. The switching portion includes at least one connection rod connecting to the linked movement portion, a switching seat coupled on the connection rod and an elastic element coupled around the connection rod to provide a butting force to the switching seat towards the transverse board. The switching seat has a magnetic attracting portion at one side facing the transverse board to attract the transverse board magnetically.Type: GrantFiled: September 19, 2011Date of Patent: March 19, 2013Assignee: Pai Lung Machinery Mill Co., Ltd.Inventors: Yi Chen Chen, Kai Ying Cheng, Jian-Hao Peng
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Patent number: 7980100Abstract: A sinkerless knitting machine with latch needles, comprising a needle holder with a plurality of slots on one face, each slot accommodating a needle. Knitting retainers are provided, each with a body composed of at least two side-by-side interconnected laminar elements. At least two laminar elements of each knitting retainer are arranged in a same or in two contiguous slots of the needle holder. At least one of the laminar elements composing a knitting retainer has a retention portion defining a stop shoulder for the knitting. Each knitting retainer can move on command from a first position, in which it does not interfere with the knitting being formed, to a second position, in which it is inserted, with the retention portion, between two contiguous needles, in a region which faces the knitting forming plane, in order to retain the portion of knitting that lies between two contiguous needles.Type: GrantFiled: March 27, 2008Date of Patent: July 19, 2011Assignee: Santoni S.p.A.Inventors: Ettore Lonati, Tiberio Lonati, Fausto Lonati
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Patent number: 7963127Abstract: A knitting system (6) wherein said system causes a rocker guide (23) to move the holding-down and knock-over sinker 5 as a function of the longitudinal position of the knitting needle (4). Consequently, the pivoting movement of the holding-down and knock-over sinker (5) is forced to follow the back-and-forth linear movement of the knitting needle (4). A single box cam is sufficient for controlling this knitting system (6). In any event, it is only necessary to allocate box cams to the knitting needles (4). The holding-down and knock-over sinkers (5) do not require dedicated drives and box cams.Type: GrantFiled: June 2, 2009Date of Patent: June 21, 2011Assignee: Goz-Beckert KGInventor: Uwe Stingel
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Publication number: 20090301138Abstract: A knitting system (6) wherein said system causes a rocker guide (23) to move the holding-down and knock-over sinker 5 as a function of the longitudinal position of the knitting needle (4). Consequently, the pivoting movement of the holding-down and knock-over sinker (5) is forced to follow the back-and-forth linear movement of the knitting needle (4). A single box cam is sufficient for controlling this knitting system (6). In any event, it is only necessary to allocate box cams to the knitting needles (4). The holding-down and knock-over sinkers (5) do not require dedicated drives and box cams.Type: ApplicationFiled: June 2, 2009Publication date: December 10, 2009Applicant: GROZ-BECKERT KGInventor: Uwe Stingel
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Patent number: 7380419Abstract: There are provided a movable sinker apparatus of a weft knitting machine and a sinker which are capable of holding and pressing down a knitting yarn of a previous loop and sufficiently pulling down a knitting fabric. At forward positions of the sinkers, second protruding portions are close to each other, and thus a knitting fabric can be sandwiched therebetween. When the front and rear needle beds are faced each other so as to be symmetric at the needle bed gap, the forces of the wire springs are applied so as to pull down the knitting fabric in the vertical direction. A knitting yarn receiving portion is formed on a first protruding portion of the front end portion on the sinker, and thus it is possible to retain a knitting yarn of a previous loop and prevent the knitting yarn from moving as the knitting needle moves forward.Type: GrantFiled: March 29, 2005Date of Patent: June 3, 2008Assignee: Shima Seiki Manufacturing LimitedInventor: Masaki Miyamoto
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Patent number: 7174748Abstract: A movable sinker (8) can move a tip portion (8c) forward and backward relative to a needle bed gap (2) through pivotal displacement by setting, as a support point, a concave portion (5a) of a needle plate (5). A wire spring (10) energizes the movable sinker (8) so that the tip portion (8c) is moved forward into the needle bed gap (2). A stopper (20) on which an abutment portion (8e) of the tip portion (8c) of the movable sinker (8) abuts to control the movable sinker (8) to be pivotally displaced by the energization of the wire spring (10) is provided in a position in the bottom portion of the base (4) near the needle bed gap (2). The maximum amount of press-in of the tip portion (8c) of the movable sinker (8) is regulated by an abutment of the abutment portion (8e) on the stopper (20). The stopper (20) can adjust a forward and backward movement amount relative to the needle bed gap (2) by a position adjusting mechanism (21).Type: GrantFiled: July 28, 2004Date of Patent: February 13, 2007Assignee: Shima Seiki Manufacturing LimitedInventor: Minoru Sonomura
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Patent number: 7152435Abstract: A weft knitting machine having a movable sinker capable of securing a large space at a needle bed near a knitting fabric knitting area and making a pause in the state of stopping action on the knitting fabric knitting area. A sinker operating cam mechanism (10) installed in a carriage acts on the butt (12c) of a sinker jack (12) to move the sinker jack (12) backward from a mouth part (2) so that the acting part (8c) of the movable sinker (8) can retract from the mouth part (2). The sinker jack (12) is locked to a moved back position by a locking mechanism (16). Since a wire (17) passed through a needle plate (5) is utilized to lock the sinker jack (12) in the locking mechanism (16), the locking mechanism (16) can be reduced in size. To lock the sinker jack (12) to the wire (17), the sinker jack (12) comprises a projection (12f).Type: GrantFiled: July 28, 2004Date of Patent: December 26, 2006Assignee: Shima Seiki Manufacturing LimitedInventors: Minoru Sonomura, Masaki Miyamoto, Toshiaki Morita
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Patent number: 6568222Abstract: A sinker device comprises a sinker jack 50 which can be freely advanced and retracted with respect to a needle bed gap 4 and a sinker 30 supported on an upper surface of the sinker jack formed as a supporting surface in a freely swingable manner. The sinker 30 and the sinker jack 50 have sliding contact surfaces sidably contactable with each other which are each formed at a front side thereof with respect to a swinging pivot point. When the sinker jack 50 is advanced toward the needle bed gap 4 to move relative to the sinker 30, the sinker 30 takes the swinging attitude controlled by the sliding contact relation between the respective sliding contact surfaces of the sinker and the sinker jack, so that the sinker 30 is controllably swung to at least a knitted loop pushing level, a knitted loop releasing level and a stitch forming level.Type: GrantFiled: April 24, 2002Date of Patent: May 27, 2003Assignee: Shima Seiki Mfg., Ltd.Inventor: Toshiaki Morita
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Patent number: 6401495Abstract: A sinker (50) for a knitting machine operating according to the relative technique is described. The sinker (50) contains a front (32), a back (33), a head (34) arranged on one end and having a sinker throat (35) and a knock-over edge (36), a control butt (38) intended to make possible movements in a longitudinal direction (v) and protruding from the front (32), and at least one rocking element (39, 40) designed to make possible pivot movements transverse to the longitudinal direction (v) and provided on the front (32). According to the invention, the sinker (50) also has a spring element (41) intended to compensate for manufacturing inaccuracies, acting transverse to the longitudinal direction (v) (FIG. 4). A knitting machine equipped with such a sinker (50) is also described.Type: GrantFiled: March 20, 2001Date of Patent: June 11, 2002Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Hans-Martin Eppler, Dietmar Traenkle
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Patent number: 6167730Abstract: A sinker (1) for a circular knitting machine contains a shaft (2) with a recess (11) in which a selection element (12) provided with a controllable raising butt (20) is mounted swivellably and can be swivelled to and fro between a position in which the raising butt (20) is retracted into the recess (11) and a position in which the raising butt (20) projects upwards over the upper side of the shaft (2). A spring (21), which can be attached to the selection element (12) or the shaft (2), serves to pre-tension the selection element (12) into one of these two positions (FIG. 1). In addition, a selection device is provided for selecting the sinker (1) in accordance with a pattern.Type: GrantFiled: May 19, 1999Date of Patent: January 2, 2001Assignee: SIPRA Patententwicklungs- u. Beteiligungsgesellschaft mbHInventor: Rolf Willmer
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Patent number: 6092396Abstract: A knitting machine has a needle bed, a plurality of needles, plates arranged between the needles, each of the plates having a front operational part provided with edges engaging in a loop forming region and displaceable about an axis extending along the needle bed between a front position and a rear position, and a shaft part arranged substantially parallel to the needles and longitudinally displaceable for driving the plates, the operational part and the shaft part being connected by an elastic springy web to form a one-piece element.Type: GrantFiled: June 10, 1998Date of Patent: July 25, 2000Assignee: H. Stoll GmbH & Co.Inventors: Franz Schmid, Martin Wornle
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Patent number: 6079233Abstract: Grooves for receiving a movable loop forming plate are made in both front and back needle beds at the top ends thereof on the trick gap side, and movable loop forming plates are mounted in the grooves. A loop forming edge is provided at the top end of each movable loop forming plate, and the plate is energized by a spring in a direction that the plate moves away from the trick gap, and the plate is made to move forward or backward by a movable loop forming plate control means, around a fulcrum that is provided on the needle bed in the bottom of the trick gap.Type: GrantFiled: August 11, 1998Date of Patent: June 27, 2000Assignee: Shima Seiki Manufacturing, Ltd.Inventor: Masahiro Shima
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Patent number: 6014874Abstract: An apparatus for guiding yarn into a hook or to a predetermined position of a rear face of a needle of a flat knitting machine, and for guiding the yarn without making large horizontal advancing and retracting movements of a yarn guiding member of the yarn guiding apparatus. The apparatus guides the yarn, when a yarn pushing down operating edge at an end of the yarn guide member is engaged with and pushes down the yarn so that the yarn is slidably moved, without applying a high resistance to the yarn and parallel needles and sinkers, on at least one pair of needle beds having head portions opposed to each other with respect to the center of knock-over edge portions. Yarn holding members, each having a yarn pushing down edge operating at an end thereof, are supported for sliding movement toward the knock-over edge portion, with means for moving each of the yarn pushing down operating edges downward during or after sliding advancement of the yarn holding member.Type: GrantFiled: September 15, 1998Date of Patent: January 18, 2000Assignee: Shima Seika Mfg., Ltd.Inventors: Masahiro Shima, Minoru Sonomura
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Patent number: 5918483Abstract: The flatbed knitting machine includes opposing needle beds (V,H) with longitudinally movable needles (11,12); a carriage provided with cams (14,15,16) and sinkers (17,18; 17',18'; 17",18") having a closed position (S1), an end position (S2) and an open position (S0) and movable between the needles (11,12) with the help of the cams (14,15,16) in the carriage. The sinkers (17,18; 17',18'; 17",18") each have a hook-shaped projection (25, 26; 25', 26') that occludes or encloses from above a side of a loop on an adjacent needle in the needle beds when the sinkers are in the closed position.Type: GrantFiled: February 4, 1998Date of Patent: July 6, 1999Assignee: H. Stoll GmbH & Co.Inventors: Franz Schmid, Gerhard Goetz
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Patent number: 5862681Abstract: The present invention relates to improved pile fabrics containing courses in which at least two pile forming yarns are meshed across a complete course together cooperatively in various fabric constructions, and respectively into a ground fabric, and forming pile loops one another alternatively in succeeding wales or areas. The fabric is manufactured according to a process in which needles are moved into a feeding position in which they remain, meanwhile in at least two succeeding sections, alternatively, pile elements are selected and raised and after the feeding of a pile yarn are retracted to an intermediate position. The pile yarns are controlled separately from one another and are unaffected in their movement to the loop-forming and meshing action.Type: GrantFiled: January 8, 1997Date of Patent: January 26, 1999Assignee: TMG Stefalex Handels AGInventor: Walter R. Schmidt
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Patent number: 5713220Abstract: A pile patterning mechanism for a circular knitting machine comprises: a sinker bed provided with a plurality of radial, horizontal grooves and disposed on the outer circumference of an upper end of a needle cylinder; a plurality of pile sinkers fitted in the radial, horizontal grooves of the sinker bed so as to be slidable and tiltable. A plurality of horizontal pile jacks each having a plurality of butts are fitted in the radial, horizontal grooves of the sinker bed on the radially outer side of the pile sinkers so as to be slidable and tiltable; and a control unit is provided for controlling the pile sinkers and the pile jacks to slide and tilt the pile jacks and the pile sinkers. The control unit includes a plurality of sinker cams, a jack selecting device provided with a plurality of actuators, and jack cams. The horizontal arrangement of the pile jacks ebables the pile jacks to exert a reliable action on the pile sinker.Type: GrantFiled: July 29, 1996Date of Patent: February 3, 1998Assignee: Nagata Seiki Kabushiki KaishaInventors: Masahiro Seino, Hiromasa Hirose, Satoshi Okoshi, Shinya Yamamoto
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Patent number: 5570592Abstract: The sinker actuating apparatus has a sinker actuator which is displaced on a needle bed so as to move a movable sinker to a pressing or releasing position. A connector for connecting the actuator is non-fixedly provided to a needle moving device so that the actuator is moved in response to the movement of the needle mover. First and second stopper are provided for restricting the advanced or retracted positions of the sinker actuator. A resilient member is arranged to give an advancing force to the actuator.Type: GrantFiled: November 8, 1995Date of Patent: November 5, 1996Assignee: Tsudakoma Kogyo Kabushiki KaishaInventor: Yujiro Takegawa
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Patent number: 5557948Abstract: A yarn guiding apparatus for a flat knitting machine in which a pair of opposed needle beds defines a knock over edge area and a center line therebetween. A yarn holding member is arranged between a needle and a sinker mounted on a needle bed. The yarn holding member is moveable relative to the knock over edge area and has an operating face for pushing down a yarn fed from a yarn feeder to the knock over edge area. The operating face is configured for contacting the yarn and for pushing the yarn down toward a needle when the yarn holding member is advanced toward the knock over edge area. The yarn holding member is advanceable to a position in which a portion of the yarn holding member extends beyond the center line defined by the opposing needle beds.Type: GrantFiled: April 20, 1995Date of Patent: September 24, 1996Assignee: Shima Seiki Mfg. Ltd.Inventors: Masahiro Shima, Minoru Sonomura
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Patent number: 5475990Abstract: In a two-bed flat knitting machine separate sinker control devices are provided for controlling sinkers arranged between needles and have a device body laterally releasably mountable on a machine carriage. They extend only over an operating region of a cam system and their control parts are formed so that they are displaced during a carriage stroke return automatically to an operative position or a rest position.Type: GrantFiled: October 27, 1994Date of Patent: December 19, 1995Assignee: S. Stoll GmbH & Co.Inventors: Franz Schmid, Reiner Haas
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Patent number: 5475991Abstract: A sinker is disposed at the front end of a needle bed of a flat knitting machine so as to be capable of swinging displacement. A groove guiding advancing, retreating and swinging of the sinker is formed at the front end of the needle bed. A knitting yarn holding part is formed at the front end of a sinker plate. A knitting yarn drop preventive part, for preventing knitting yarn between a knitting needle and the sinker from dropping into the groove during knitting, is disposed adjacent to the sinker.Type: GrantFiled: December 15, 1993Date of Patent: December 19, 1995Assignee: Shima Seiki Manufacturing LimitedInventors: Masahiro Yabuta, Minoru Kyotani
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Patent number: 5408849Abstract: A flat bed knitting machine has at least one needle bed having mobile nees and stationary comb sinkers disposed in the needle bed. Movable holding-down sinkers are added to the needle bed to ensure that stitches are held in place.Type: GrantFiled: July 20, 1993Date of Patent: April 25, 1995Assignee: Universal Maschinenfabrik Dr. Rudolf Schieber GmbH & Co. KGInventors: Reinhold Schimko, Roland Wittwer
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Patent number: 5355699Abstract: The present invention provides a flat knitting machine having a simple construction and provided with rocking sinkers capable of stably operating for high-speed knitting operation without damaging the yarns, and a method of operating the rocking sinkers. The flat knitting machine is provided with rocking sinkers (8), sinker operating means (3) for operating the sinkers (8), needle operating means (19), and a power transmitting mechanism (4, 21) interlocking the needle operating means (19) and the sinker operating means (3) to operate the sinker operating means (3) by at least part of the motion of the needle operating means (19).Type: GrantFiled: April 14, 1993Date of Patent: October 18, 1994Assignee: Tsudakoma Kogyo Kabushiki KaishaInventors: Katsumi Inagaki, Atsuo Tsuboi, Shoichi Komasaka
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Patent number: 5333473Abstract: A sinker mechanism for a flat knitting machine having at least one front needle bed and one rear needle bed, is provided with a row of sinker assemblies, each sinker assembly having a needle plate, a swingable sinker next to a front region of the needle plate, and a yarn guide sheet fixedly mounted to a needle bed, the swingable sinker having at front end a yarn holding portion, the yarn guide sheet having at front end a yarn guide edge, and when the swingable sinker turns forward with its yarn holding portion moving down, the yarn guide edge of the yarn guide sheet comes above the yarn holding portion of the swingable sinker and projects outwardly of the front end of the sinker towards an intermediate position between the front ends of the opposite needle beds.Type: GrantFiled: July 9, 1993Date of Patent: August 2, 1994Assignee: Shima Seiki Mfg., Ltd.Inventor: Masaki Miyamoto
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Patent number: 5280712Abstract: The present invention relates to a flat knitting machine provided with swing sinkers and presser bars which can move into and out from a space provided between two needle beds in relative relationship so that they effectively urge the loops or stitches of yarn. Accordingly, both plain and rib knitting operations will be carried out with ease.Type: GrantFiled: August 15, 1991Date of Patent: January 25, 1994Assignee: Shima Seiki Mfg., Ltd.Inventors: Toshinori Nakamori, Masahiro Yabuta, Minoru Sonomura
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Patent number: 5231854Abstract: The sinkers (15) which are used together with the needles of a two-bed flat knitting machine and which are located opposite one another in the needle beds (1, 2) have an upper projection (17) and a lower projection (18) which, in one of their positions, both have a retaining effect on the stitches or stitch rows made.Type: GrantFiled: August 21, 1992Date of Patent: August 3, 1993Assignee: H. Stoll GmbH & Co.Inventors: Franz Schmid, Emil Fohl, Robert Kurz, Fritz Fleiner
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Patent number: 5134865Abstract: A sinker mechanism which includes multiple knitting needles placed in parallel above a needle bed with each sinker being mounted so that it can rock up and down so that its tip descends between adjacent knitting needles. A yarn-catching hook is provided at one sinker end; downward pressure is applied by a spring that can be removed from and replaced into the sinker so the yarn-catching hook will drop between adjacent knitting needles, and this downward force is adjustable so the yarn-catching hook's position is a function of the tension in the yarn it is holding. The sinker is located in the cut-out portion of the needle plate with the capability to rock up and down so that its back end can be linked to the end of the needle plate, and that the plate and is configured so that an arm projects to touch the rear cam.Type: GrantFiled: December 26, 1990Date of Patent: August 4, 1992Assignee: Shima Seiki Mfg., Ltd.Inventors: Masahiro Shima, Masahiro Yabuta
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Patent number: 5134864Abstract: The invention sets forth a movable sinker which is to be disposed on a needle bed of a flat knitting machine, employing compound needles. The movable sinker is provided with a cam abutting part, a stopper with a pivot hole between the cam abutting part and the stopper, a front tip part includes a guide part with an inclined lower edge which guides the knitting thread to a stopping part. The guide part is so formed that the knitting thread supplied at the time of knitting by this flat knitting machine is securely guided in the hook part of the knitting needle, and the stitch pull-in amount of the carriage at the time of forming a stitch is reduced.Type: GrantFiled: February 7, 1991Date of Patent: August 4, 1992Assignee: Shima Seiki Mfg., Ltd.Inventors: Masahiro Yabuta, Toshinori Nakamori, Minoru Sonomura
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Patent number: 4827739Abstract: By the use of special latch needles (21) whose latch (14) can take up two stable positions lying within the limits of its pivotal movement and out of which it can be moved only against the action of a spring, there is ensured, even in fast running flat knitting machines with a transfer mechanism and with stitch presser and/or stitch hold-down elements, and even during the formation of long, loose stitches and loops, reliable trapping of the yarn and manipulation of the stitches and loops by the knitting elements. (FIG.Type: GrantFiled: August 28, 1987Date of Patent: May 9, 1989Assignee: H. Stoll GmbH & Co.Inventors: Ernst Goller, Franz Schmid, Hermann Schmodde
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Patent number: 4751829Abstract: A circular knitting machine includes needles and loop-sinking sinkers longitudinally movable relative to each other in opposite directions. Each needle is provided with a non-movable slide. The movements of the needles and the sinkers are controlled by cams. Each slide has a tip. The control cam for the needle head and the control cam for the sinker and the height of the needle slide tip are selected so that the tips of the needle slides lie in the region which extends between the point of crossing of said control cams and the maximal vertical level of the knockover edge of the sinker.Type: GrantFiled: November 17, 1986Date of Patent: June 21, 1988Assignee: Sipra Patententwicklungs-und Beteiligungs-Gesellschaft mbHInventor: Ernst-Dieter Plath
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Patent number: 4741181Abstract: A knitting machine for producing mesh products has a needle carrier provided with a plurality of guiding grooves having an upper groove end and a base, a plurality of needles and a plurality of plate members alternatingly arranged in the guiding grooves so that the plate members are longitudinally displaceable and turnable in the guiding grooves and have a rear side abutting against the base of the guiding grooves. The knitting machine further has a device for cleaning at least one location and supplying an air stream which raises in the guiding grooves upwardly toward the groove end into a space formed between the rear side of the plate members and the base of the guiding grooves and limited from below by a turning region by the plate members.Type: GrantFiled: September 8, 1986Date of Patent: May 3, 1988Assignee: Sipra Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Ernst-Dieter Plath
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Patent number: 4713948Abstract: The sinkers of both needle beds of a double bed flat knitting machine are pivotable so as to form a complete bridge over the gap between the needle beds. They have a loop-forming edge which is formed, with respect to the direction of take down for the knitted fabric, underneath the projections of the sinkers, which make up the bridge. Holding down of the old stitches in the gap between the needle beds is therefore ensured and a loop equalizing movement can be effected by means of the sinkers.Type: GrantFiled: March 23, 1987Date of Patent: December 22, 1987Assignee: H. Stoll GmbH & Co.Inventors: Henning Schmidt, Walter Nedele, Hermann Schmodde
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Patent number: 4693092Abstract: In a knitting machine with longitudinally movable latch members and sinkers which are pivotable and longitudinally movable in the same direction, sinker-controlling cams and needle controlling cams are arranged on individual cam supports which are adjustable relative to each other in a longitudinal direction and transverse direction. Adjustable loop-sinking cams are provided in a sinker cam ring or a needle cam ring.Type: GrantFiled: September 11, 1985Date of Patent: September 15, 1987Assignee: Sipra Patententwicklungs-und Beteiligungs-Gesellschaft mbHInventor: Ernst-Dieter Plath
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Patent number: 4633684Abstract: A knitting machine has at least one needle bed equipped with longitudinally displaceable needles controlled by a needle cam curve, and between the needles are protruding sinkers controlled by a sinker cam curve. The sinkers are movably supported in at least the longitudinal direction of the needles and being controlled such that at a given feed, after the locking in of the yarn, they are moved counter to the lowering movement of the associated needles and after casting off of the loop are moved counter to the needle raising movement. The needle and sinker cam curves have adjoining steadily curved arc portions that in the case of the needle cam curve are sinusoidal and merge steplessly with one another. To reduce noise and wear, especially at very high knitting speeds, the sinker cam curve is substantially sinusoidal, at least in the loop forming zone.Type: GrantFiled: March 17, 1986Date of Patent: January 6, 1987Assignee: Memminger GmbHInventor: Falk Kuhn
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Patent number: 4608841Abstract: In a knitting machine having at least one needle bed, the needle bed is equipped with needles located beside one another, which are guided in a longitudinally displaceable manner under the control of a needle cam race. Combined hold-down and knock-over sinkers that are movable both in the longitudinal direction of the needles and transversely thereto are pivotably supported between the needles, their longitudinal and transverse movement being controlled by sinker cam race surfaces.In order to attain satisfactory, relatively low-friction guidance of the needles and sinkers while operating at high speed, the apparatus is designed such that the needles are disposed on longitudinal ribs disposed spaced apart on the needle bed, and the sinkers are disposed between these ribs.Type: GrantFiled: July 26, 1984Date of Patent: September 2, 1986Assignee: Memminger GmbHInventors: Alfred Buck, Falk Kuhn
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Patent number: 4584851Abstract: A knitting machine has plate members and needles movable opposite to one another during sinking of the threads. The plates are of a short length and located between guide webs of a separate plate carrier, whereas the needles are longitudinally displaceable between guide webs of a needle carrier with needle shafts sliding on the free end surfaces of the guide webs of the plate carrier. Control curves for the needles and the plate members are formed so that the withdrawal movement of a needle and at least at a half needle pitch prior to the opposite driving out movement of a plate member preceding in the working direction.Type: GrantFiled: March 26, 1984Date of Patent: April 29, 1986Assignee: Sipra Patententwicklungs-und BeteiligungsgesellschaftInventor: Ernst-Dieter Plath
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Patent number: 4576018Abstract: The invention relates to stitch-forming machines, which have needles guided on a needle support means for longitudinal displacement and controlled by needle cams and which also have sinkers displaceable between the needles in the region of their heads, these sinkers having sinker throats and knitting surfaces and being controlled by sinker cams. In order to shorten the distance to be travelled by the needles during drawing of the loops it is suggested that the sinkers be mounted in a plane cam guideway by means of a projecting swivel butt for pivoting movement only and not be displaceable in a longitudinal direction and that the distance from the sinker throats and knitting surfaces to the adjacent edge of the needle support means be alterable solely due to pivoting movement of the sinker.Type: GrantFiled: May 25, 1984Date of Patent: March 18, 1986Assignee: Terrot Strickmaschinen GmbHInventor: Alfred Schindele
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Patent number: 4574596Abstract: A stitch-forming machine which has needles guided on a needle support for displacement in the longitudinal direction and controlled by needle cams and also has holding-down and knocking-over sinkers which are adapted for displacement between the needles in the region of their heads and are moved by sinker cams in the longitudinal and transverse directions relative to the needle support.Type: GrantFiled: June 6, 1984Date of Patent: March 11, 1986Assignee: Terrot Strickmaschinen GmbHInventors: Werner Engelfried, Gerhard Muller
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Patent number: 4532781Abstract: In order to increase the operating speed of the knitting machine and to attain a fine needle cut, sinkers (7), with their shaft (12), are guided on a needle carrier (1), and simultaneously forming guide ribs for adjacent needle shafts (3). A projection cam (16) which imparts to the sinkers (7) the movement transverse to the needles (2) is disposed directly on the needle carrier (1).Type: GrantFiled: October 21, 1982Date of Patent: August 6, 1985Assignee: Memminger GmbHInventor: Alfred Buck