Work Supports Patents (Class 112/260)
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Method and apparatus for changing the sewing direction of a multiple needle flat seam stitch machine
Patent number: 4917032Abstract: A method and an apparatus for changing the sewing direction of a multiple needle flat sewing machine for sewing elbow pads of sports wear, jumpers, etc. and patchworks of various shapes. Needles are stopped at the needle upper dead center position; a throat plate is moved in a direction contrary to the sewing direction; a needle thread or looper thread caught on tongues of the throat plate is released from the tongues; and the sewing direction can be changed at any desired angle in relation to the sewing direction at the start, such as a right angle, an acute angle or an obtuse angle. The present invention also makes it possible to carry out fancy stitching with thick thread by a multiple needle flat sewing machine.Type: GrantFiled: January 3, 1989Date of Patent: April 17, 1990Assignee: Yamato Mishin Seizo Kabushiki KaishaInventor: Takeshi Matsumoto -
Patent number: 4889062Abstract: A sewing machine capable of producing embroidery stitches on a workpiece which in general require the workpiece to be shifted relative to a needle in a lateral direction as well as a longitudinal direction. The sewing machine has first and second vertical extending presser bars provided at their lower ends with press rollers. The presser bars are spring-biased downwardly so that the press rollers exert downwardly directing pressure onto the workpiece. First and second feed rollers are arranged within a workpiece supporting table of the sewing machine, in opposition to the press rollers respectively. The first feed rollers are rotated by a first drive motor to feed the workpiece in the lateral direction, whereas the second feed rollers are rotated by a first drive motor to feed the workpiece in the longitudinal direction, thereby feeding the workpiece in any direction in a desired amount.Type: GrantFiled: November 7, 1988Date of Patent: December 26, 1989Assignee: Janome Sewing Machine Industry Co., Ltd.Inventor: Akira Orii
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Patent number: 4876975Abstract: A sewing machine is provided with a mechanism which is actuated by a drive unit and engages with a needle point insert. The mechanism moves a needle plate insert from a sewing position raised above a needle plate, in which the needle plate reinforces a fabric being clamped to a fabric holder, to a resting position not raised above the needle plate, in which the fabric holder may be moved and the fabric may be changed. The mechanism insures that this movement can be effected in a straightforward manner and with only slight wear and abrasion and while affording accurate transmission. The mechanism is fashioned as a straight-line mechanism with a first oscillating crank which is adjusted for setting the operating height of the needle plate insert and a separator crank for adjusting the insert between a rest position and an operating position.Type: GrantFiled: July 5, 1988Date of Patent: October 31, 1989Assignee: Pfaff Industriemaschinen GmbHInventor: Oskar Braun
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Patent number: 4791874Abstract: A needle plate for a device adapted to sew a sequence of idle chain stitches has a guide contiguous to a needle locating opening, which guide is adapted to guide the sequence of idle chain stitches so as to pass through the needle location when the free end of the sequence is grasped by a retainer. With such arrangement, the idle chain stitches are sewn by a sewing thread at least at a position where sewing of a cloth starts and are maintained generally inwardly of a hemstitch seam.Type: GrantFiled: November 19, 1986Date of Patent: December 20, 1988Assignee: Tokyo Juki Industrial Co., Ltd.Inventor: Kengo Shiomi
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Patent number: 4748925Abstract: An opening plate which closes a lower thread bobbin is provided with a drawing of a bobbin on its surface. A bobbin drawing is exactly overlapped with the bobbin when the plate is completely closed. Also a drawing of a thread tension adjusting device in a required position and a drawing of a lower thread normal path are provided on the opening plate. The drawings indicate to a machine operator the position of lower thread holding bobbin correctly inserted in a horizontal full rotation loop taker device and the path of drawing of the lower thread therefrom so as to enable the operator to insert the lower thread holding bobbin in the horizontal full rotation loop taker device correctly in place, and pass the lower thread wound on the bobbin through the thread tension adjusting device correctly.Type: GrantFiled: March 2, 1987Date of Patent: June 7, 1988Assignee: Janome Sewing Machine Co. Ltd.Inventors: Shiro Takei, Shuzo Morimoto
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Patent number: 4708070Abstract: A looper assembly for a two thread bag closing sewing machine in a simple arc within a single plane on one side of a moving needle, the plane being parallel to the needle axis and intersecting the line of movement of the bags at an angle of less than 45 degrees to reduce thread wear and breakage. A process of stitching the bags utilizing looper movement within a single plane is also disclosed.Type: GrantFiled: December 23, 1985Date of Patent: November 24, 1987Assignee: AXIA IncorporatedInventor: Andrew J. Hiltner
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Patent number: 4694763Abstract: A bed slide for a sewing machine having a frame fabricated of a synthetic resin material, the bed slide extending beyond the throat plate on both sides thereof, and thereby beyond the cavity accommodating the looptaker, and two embodiments of devices attachable to the synthetic resin material spaced from the cavity for slidably retaining the bed slide therein. The first embodiment, a headed stud having a transverse slot therein for receiving a turned back edge of the bed slide is retained in an aperture molded in the synthetic resin material, with a resilient member exerting a pull on the stud for imparting a drag to the bed slide and retaining the same to the bed. In the second embodiment, a Z-shaped member has its lower bar fastened to the sewing machine bed and its upper bar inserted between the bed slide and a turned back end thereof. A portion of the upper bar is bent downwardly to provide for a drag resisting free motion of the bed slide.Type: GrantFiled: September 29, 1982Date of Patent: September 22, 1987Assignee: SSMC Inc.Inventor: Kenneth D. Adams
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Patent number: 4693198Abstract: There is a zigzag sewing machine provided with a horizontal rotary loop taker device which is restrained with respect to the rotation direction, and holds therein a bobbin carrier horizontally attached, and is supplied with a lower threads from the left side to the left basic line marked with an axial line in front of the needle, and provided with a feed dog which is provided nearly to passage of the needle to move vertically and laterally. In such a sewing machine a cam portion is provided for supplying the lower thread to a lower thread contacting portion of the bobbin carrier or a lower thread contacting portion of a part connecting right and left teeth of the feed dog, whereby the amount of supplying the lower thread is adjusted properly with respect to the left basic line and the right basic line during zigzag stitching, and the slack amount of the lower thread is adjusted properly with respect to the left basic line and the right basic line during forming stitches.Type: GrantFiled: September 19, 1985Date of Patent: September 15, 1987Assignee: Janome Sewing Machine Co. Ltd.Inventor: Susumu Hanyu
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Patent number: 4691651Abstract: In order to overcome especially large areas of obstacle between a carrier plate for a workpiece to be sewn and a tubular stud arranged at the underarm of a sewing head, the underarm is tiltably arranged as to be swung downwards from its working position. The axle about which the tilting of the underarm is carried out, is located in the area of the standard of the sewing head. Additionally the upper arm of the sewing head can be tilted upwards about the same axle. Separate individual tilt drives are provided for the underarm and the upper arm.Type: GrantFiled: May 20, 1986Date of Patent: September 8, 1987Assignee: Kochs Adler AGInventor: Hubert Junemann
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Patent number: 4655151Abstract: A housing forming the free bed base in a sewing machine which is detachable from the remainder of the machine and which is comprised of a tray-shaped base module on which are mounted all lower sewing members that cooperate with the needle in the formation of stitches. These members include a needle plate, closing flat plates located alongside the opposite edges of the needle plate and closing interchangeable elements defining both the front and rear walls of the housing and the remaining portion of the upper flat surface of the latter which is not covered by the closing flat plates and the needle plate.Type: GrantFiled: December 16, 1985Date of Patent: April 7, 1987Assignee: Rockwell-Rimoldi S.p.A.Inventors: Adriano Alberti, Giancarlo Minella
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Patent number: 4646665Abstract: A displaceable cover for the housing of a sewing machine loop catch mechanism comprises a plate fixed to a pin which in turn is rotatably and slidably mounted in relatively fixed bearings. A spring element exerts upon the pin both a torsion torque and downward axial thrust. Opening of the cover is accomplished by depressing one end of a pivoted lever to cause the other end thereof to raise the cover from engagement within the housing and allowing the spring elements to swing the cover into an open position.Type: GrantFiled: August 19, 1985Date of Patent: March 3, 1987Assignee: Mefina S.A.Inventors: Antonio Jimenez, Pierre-Maurice Rochat
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Patent number: 4643117Abstract: A sewing machine includes a housing with a base portion having a covering base plate and an upright standard adjacent one end of the base portion extending above the base plate and an arm portion extending out of the standard and overlying the base plate. A feed drive in the housing includes a ratchet wheel driven by the feed drive located on the arm portion which cooperates with a shuttle carried in the base portion. The feed drive includes a variable drive including an eccentric which may be shifted so as to vary the driving speed of the shuttle. The construction includes a setting device for setting the speed of the shuttle, an actuating device connected to the setting device and the variable drive so that the drive of the shuttle may be varied.Type: GrantFiled: November 14, 1985Date of Patent: February 17, 1987Assignee: Pfaff Industriemaschinen GmbHInventors: Klaus Wentz, Heinrich Bungert
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Patent number: 4640207Abstract: A sewing machine operating station which cooperates with an overhead conveyor system having a number of trolleys which convey partly-formed garments between working stations, each trolley having a delivery arm from which garments can be suspended, and delivered to a working station. Each working station comprises a table, a sewing machine mounted on the table, and a working surface adjacent to the sewing machine and onto which a partly-formed garment can be placed in order to undergo a sewing operation. An inverted L-shaped guide is mounted on the table and can be coupled-up with the delivery arm of a trolley so as to guide a supply of partly-formed garments, suspended therefrom, to a position adjacent to the working surface.Type: GrantFiled: July 15, 1985Date of Patent: February 3, 1987Assignee: S.R. Gent plcInventors: Michael O'Keefe, John R. Fox
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Patent number: 4624201Abstract: A sewing machine having a base constructed of two modules having coupling means permitting one of said modules to be quickly removed from the other so that different sewing instrumentalities can be substituted to alter the type of stitch being made.Type: GrantFiled: December 12, 1985Date of Patent: November 25, 1986Assignee: Rockwell-Rimoldi S.p.A.Inventor: Ezio Maggi
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Patent number: 4608939Abstract: A pattern or template for achieving controlled hand sewing. The pattern or template (10) is fabricated using two complementary template units (12, 14) that can be superimposed upon each other to enclose a fabric (40) therebetween. Releasable attaching means (24, 26, 32, 34) provide for releasably joining the unit to the fabric. Each of the template units is provided with a plurality of perforations (16, 20) along a selected path (18, 46) with these perforations in one of the template units sufficiently overlapping the perforations in the other template unit whereby a needle (38) with a thread (42) attached can be passed through the template units to achieve selected stitches in the fabric. The template units can be provided, in one embodiment, with raised indicia (36) corresponding to braille-type markings so that the unit can be used by persons with visual handicaps.Type: GrantFiled: July 1, 1985Date of Patent: September 2, 1986Inventor: Nancy Lampley
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Patent number: 4606288Abstract: In a sewing machine having at least one needle and one looper underneath a throat plate, a guiding and aligning device comprising, a permanent magnet positioned underneath the throat plate in the cloth feeding direction on one side only of the needle and positioned sufficiently close to the needle to attract the needle to the side toward the magnet, such that the needle is guided and aligned with respect to the looper.Type: GrantFiled: October 7, 1985Date of Patent: August 19, 1986Assignee: Union Special G.m.b.H.Inventor: Erwin F. Jurgens
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Patent number: 4590875Abstract: An improved modular sewing machine which has a base unit including a lower horizontal unit and a vertical upright unit to which can be attached demountable upper and lower stitching instrumentalities, the mounting surfaces of the stitching instrumentalities being substantially coplanar.Type: GrantFiled: January 17, 1985Date of Patent: May 27, 1986Assignee: Rockwell-Rimoldi S.p.A.Inventors: Roberto Sanvito, Emilio Fietta, Giancarlo Della Torre
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Patent number: 4565142Abstract: A one-piece sewing machine bed extension including portions which deform as the extension is placed on a sewing machine and generate internal stresses coacting with interlocks between the bed extension and sewing machine so arranged as to firmly secure the bed extension in place in a manner which is augmented by forces applied to the bed extension incident to normal operation and handling of the sewing machine.Type: GrantFiled: June 10, 1985Date of Patent: January 21, 1986Assignee: The Singer CompanyInventor: Leo E. McGann
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Patent number: 4546716Abstract: In a sewing machine for performing twin overedging and seaming in one high-speed operation, specially designed top and bottom variable feed dogs pull the two plies through a three needle stitching area with improved, simplified elements for diverting one ply edge while the other is being overcast. The upright overcast edge of the top ply passes through a tunnel formed through the top feed dog. A guide wall attached to the throat plate guides the top edge away from the bottom overedging station. A guard wall can be attached to the presser foot to keep the turned-up top edge away from the seaming needle. A fiber optic/pneumatic system controls automatic stop, presser foot/top feed retraction and between-work thread cutter functions. Alternative front edge guides facilitate feeding the two plies in registration.Type: GrantFiled: July 30, 1984Date of Patent: October 15, 1985Assignee: Porter Sewing Machines, Inc.Inventors: Edward Babson, Michael R. Porter, Robert E. Porter
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Patent number: 4530294Abstract: An apparatus for holding tubular goods for stitching at the station of a sewing machine has a support adjacent the sewing station, a drive for rotating the support about a horizontal support axis, and at least three arcuate segment plates displaceable radially of the support axis on the support and together forming a segmented drum centered on the axis. The plates are displaceable between inner positions defining a circumference smaller than that of the smallest tubular goods to be sewn and outer positions defining a circumference larger than that of the largest tubular goods to be sewn. The plates can be radially spread on the support to change the diameter of the drum. Thus when a tubular workpiece is fitted over the drum it is tensioned thereover. The support can also be displaced vertically adjacent the station to align the uppermost segment plate generally with the stitch plate.Type: GrantFiled: April 6, 1984Date of Patent: July 23, 1985Assignee: Durkoppwerke GmbHInventors: Konrad Pollmeier, Philipp Moll
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Patent number: 4520744Abstract: A sewing machine with an articulated table is provided to facilitate the proper positioning and removal of workpieces. The drive shaft disposed under the table also is articulated to rotate with a portion of the table. An alignment piston is provided to securely align the drive shaft prior to any articulation thereof. An articulation piston is provided to positively move the table through its range of articulation. A locking piston also is provided to lock the table into its nonarticulated condition. The various piston members are preferably controlled by a common unit to ensure coordinated action.Type: GrantFiled: July 12, 1984Date of Patent: June 4, 1985Inventor: Mario Portilla
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Patent number: 4502398Abstract: A throat plate of an automatic sewing arrangement producing a double lockstitch and having a feeding device for generating a feed motion in any direction in a sewing plane as a relative movement between the needle and a workpiece. The throat plate is formed at the surface turned towards the workpiece with a closed needle aperture area, and is formed at the surface turned away from the workpiece with an opened needle aperture area profiled with a thread guiding edge affecting the hook thread leaving the double lockstitch hook. The thread guiding edge controls the position of the hook thread with respect to the needle so as to avoid a double interlocked stitch formation.Type: GrantFiled: March 9, 1983Date of Patent: March 5, 1985Assignee: Kochs Adler AGInventor: Wilfried Goldbecker
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Patent number: 4493280Abstract: A needle plate on the base of a sewing machine with a pin projecting from the plate lower surface. The pin is coil spring biassed upwardly to allow rotation of the plate about the pin and selection of one of two holes in the plate to cooperate with the needle. Flexure of a leaf spring, that engages the pin, will draw the needle plate into a fixed position on the base.Type: GrantFiled: September 29, 1982Date of Patent: January 15, 1985Assignee: Necchi S.p.A.Inventor: Nereo Bianchi
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Patent number: 4487144Abstract: A transformable sewing surface for sewing machines formed of a base consisting of a first section having an upper and lower surface, a second section containing stitch-forming members, extending parallel to the first section and spaced from it, and a platform connected to said first section so as to swing with respect to it in order to assume two positions, in the first of which it is located in the space present between the sections of the base so as to form a continuous sewing surface with it while in the second position it turns with respect to the first section so as to leave the second section free, the connection of the platform being provided with hinges of flexible material by means of which the platform can turn so as to be swung from the first position in which it rests on the lower surface of the first section to the second position where the platform rests on the upper surface of the first section.Type: GrantFiled: September 29, 1982Date of Patent: December 11, 1984Assignee: NECCHI Societa per AzioniInventor: Nereo Bianchi
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Patent number: 4458615Abstract: A bed extension support structure for a sewing machine is disclosed which not only provides for ready removal and replacement of the bed extension but which also permits adjustment of the alignment and registration of the bed extension with respect to the work supporting bed of the sewing machine.Type: GrantFiled: March 25, 1983Date of Patent: July 10, 1984Assignee: The Singer CompanyInventor: Kenneth D. Adams
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Patent number: 4444139Abstract: A slide plate hold-down spring is provided with a depending portion which is received in a well in a sewing machine bed. The depending portion includes a window in which a protuberance on the bed engages the spring, and a curved length which engages a wall of the well.Type: GrantFiled: December 10, 1982Date of Patent: April 24, 1984Assignee: The Singer CompanyInventors: Walter H. W. Marsh, John Patricia, Alfred Mack
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Patent number: 4441444Abstract: A throat plate of a sewing machine with a feed plate is provided with disc type bearings retained in fixed position adjacent to the needle hole of the throat plate to support and provide low friction surfaces in contact with the feed plate.Type: GrantFiled: February 26, 1982Date of Patent: April 10, 1984Assignee: AMF Inc.Inventor: Wilhelm H. Jung
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Patent number: 4430878Abstract: This invention relates to a cold forming process wherein a consistent stitch tongue profile is swaged into a planar throat plate blank. Thereafter, excess material resulting from the cold forming process is removed and the required needle holes and thread slots are provided in the blank.Type: GrantFiled: October 26, 1981Date of Patent: February 14, 1984Assignee: Union Special CorporationInventors: David Dispennett, Robert Zorn
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Patent number: 4426947Abstract: In a sewing machine having an upper presser (6), a work feed (8) disposed below and aligned with the upper presser (6), and a work support (9) about the feed mechanism (8), the feed mechanism (8) and the work support (9) are movable in unison to a raised position adjacent the upper presser and into a lowered position in which the feed mechanism is spaced further from the upper presser, the feed mechanism and the work support being resiliently loaded upwardly. In another aspect, a drive for a thread take-up element includes a rotary axially-acting cam (15,23), and a cam follower (24) coupled to the thread take-up element (25,29).Type: GrantFiled: June 10, 1981Date of Patent: January 24, 1984Inventor: Eric J. Marshall
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Patent number: 4426944Abstract: A sewing machine with a work supporting surface convertible into a free arm, comprising a bed provided with a cantilevered arm containing a bobbin hook, a door pivoting on the cantilevered arm to rotate from a closed position to an opened position for access to the hook, and a movable work supporting surface which can be moved to an operatively raised position and an operatively lowered position at which lowered position the free arm is completely accessible. The support work surface comprises a U-shaped element, a plate slidable on suitable guides positioned on the work supporting surface in the front portion of the work supporting surface, a latch connected to the plate and a wall defining a relief and tooth connected to the door to couple with the plate latch to allow the opening and/or closing of the door every time that the plate is urged to take the extreme position of its stroke.Type: GrantFiled: February 20, 1981Date of Patent: January 24, 1984Assignee: Necchi Societa per AzioniInventor: Nereo Bianchi
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Patent number: 4421043Abstract: A free arm of a convertible bed sewing machine is provided with a rear bed extending member which is pivoted on a cover that is fitted over a fixed machine supporting leg but can be readily removed therefrom with the bed extending member to provide space for an embroidery attachment.Type: GrantFiled: June 8, 1982Date of Patent: December 20, 1983Assignee: The Singer CompanyInventors: Boleslaw Kornatowski, Kenneth D. Adams
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Patent number: 4407211Abstract: An overedge sewing machine convertible from a flat bed to a cylinder bed version wherein the work supporting surface is supported by a vertical side wall and a vertical front wall with the cylinder bed protrusion projecting laterally from an extension to the vertical side wall. A needle bar reciprocates a needle into an opening in the extension of the vertical side wall and the work material is enabled to travel a path beneath the sewing needle by having a deep groove through the vertical side wall adjacent the cylinder bed protrusion behind the sewing needle, the extension being supported by a bridge connecting the vertical side wall, vertical front wall and extension. The deep groove behind the cylinder bed protrusion merges into a shallow groove beneath the cylinder bed protrusion where the material is able to undergo some deformation without effecting the stitching point.Type: GrantFiled: June 26, 1981Date of Patent: October 4, 1983Assignee: The Singer CompanyInventor: Hiroshi Kiyoshima
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Patent number: 4407210Abstract: In a twin needle tacker in which one needle/bobbin assembly is movable relative to the other to change the space between the tacks, a feed plate assembly and a throat plate assembly each having one plate movable relative to the other for realigning the slots of the feed plate assembly and the needle holes of the throat plate assembly with the needles; and a twin knife mechanism operatively interconnected having a first cutting means mounted on the bottom of one throat plate and the other cutting means mounted on the bottom of the other throat plate.Type: GrantFiled: April 9, 1982Date of Patent: October 4, 1983Assignee: AMF IncorporatedInventors: Wilhelm H. Jung, George P. Diacont, Jr.
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Patent number: 4395962Abstract: A straight stitch throat plate for a sewing machine is formed as a resilient thin sheet metal part with integral appendages including a depending rear tab which hooks under the edge of a feed dog slot in a zig-zag plate, laterally spaced depending tabs which are received in locator holes in the zig-zag place, and a bent down flange to extend over a front edge of the zig-zag plate into a position wherein the flange may be engaged by a slide plate on the sewing machine.Type: GrantFiled: September 23, 1981Date of Patent: August 2, 1983Assignee: The Singer CompanyInventor: Charles R. Odermann
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Patent number: 4393794Abstract: A sewing machine has a stitch control pulse motor for changing the needle position and is connected to a needle plate by means of an intermediate control device which is operated by a starting device of the machine, to change the needle dropping hole.Type: GrantFiled: October 23, 1980Date of Patent: July 19, 1983Assignee: Janome Sewing Machine Co. Ltd.Inventors: Yasukata Eguchi, Hideaki Takenoya, Yasuro Sano
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Patent number: 4374501Abstract: An improved assembly for facilitating the closing of an end portion of a tubular hosiery blank positioned upon a support assembly includes a tubular unit having a metallic hollow core provided with a molded urethane coating covering the outer portion of the core, and having diametrically opposed urethane fins defining guide slots for supporting and freely slidably receiving therein reciprocable blades. The radially extending urethane fins are tapered outwardly and extend substantially the full length of the core member.Type: GrantFiled: July 18, 1980Date of Patent: February 22, 1983Assignee: Consolidated Foods CorporationInventors: Cecil R. Bell, Jr., George D. Nakhle, A. Russell Edwards
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Patent number: 4343253Abstract: A convertible sewing machine bed lid and hinge arrangement includes a lid that may be pivoted downwardly to expose an elongated arm for sewing tubular garments. The lid has depending pivot bosses and the bed has a web casting that includes legs connected to the bosses by the hinge pins fitted into apertures in the bosses and slots in the legs. A pair of leaf springs held by projections that interlock with the casting entrap the pins within the slots and urge them toward a closed extremity of the slots. Latching projections on the free side of the lid are resiliently forced into recesses in the arm to retain the lid in a horizontal position to provide an expansive work supporting surface.Type: GrantFiled: May 23, 1979Date of Patent: August 10, 1982Assignee: The Singer CompanyInventor: Ronald C. Iannarone
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Patent number: 4316421Abstract: A throat plate having means attached thereto for preventing the work limb in a loop of thread from being drawn up through the material being sewn by the take-up limb due to friction therebetween causing a loose stitch known as a halo.Type: GrantFiled: October 17, 1979Date of Patent: February 23, 1982Assignee: The Singer CompanyInventor: Stanley J. Ketterer
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Patent number: 4314517Abstract: This invention concerns a sewing machine of the kind in which a main base and a supplemental base are provided. The supplemental base is connected to the main base through link mechanisms so as to be either contiguously positioned with respect to the main base or spaced therefrom so as to present a narrower support surface conducive to supporting a tubular fabric.Type: GrantFiled: January 9, 1979Date of Patent: February 9, 1982Assignee: Aisin Seiki Kabushiki KaishaInventors: Takahiko Kasahara, Tukasa Yamaguchi, Shigeharu Shichi, Masayuki Kato, Senji Suito
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Patent number: 4303030Abstract: A device for sewing machines having more than one stitch forming needle for grouping together and aligning the threads of stitch chains with the sewing axis which were formed on individual tongues of the machine's needle plate. An integral projection formed on the needle plate in spaced relation to the tongues is provided on each side thereof with camming surfaces one of which is effective in grouping all of the threads together withdrawn from their respective tongues and the other guides the grouped threads to a position for entry into one of the plate's needle throats after which they become aligned with the sewing axis and then cut to a desired length and the cut portion restrained for incorporation into the next seam to be formed.Type: GrantFiled: July 25, 1980Date of Patent: December 1, 1981Inventors: Giovanni Palacino, Angelo Radice
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Patent number: 4297957Abstract: A throat plate having means attached thereto for preventing the work limb in a loop of thread from being drawn up through the material being sewn by the takeup limb due to friction therebetween causing a loose stitch known as a halo.Type: GrantFiled: October 17, 1979Date of Patent: November 3, 1981Assignee: The Singer CompanyInventor: Stanley J. Ketterer
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Patent number: 4278037Abstract: A chain stitch conversion throat plate for a lock stitch sewing machine, the throat plate carrying a thread loop retaining pin and a thread stripper device actuated by the up and down motion of the sewing machine feed dog. The thread stripper device includes a block pivotably supporting a wire form having one end for extending beneath the feed dog for up and down motion therewith, and the other end extending adjacent the thread loop retaining pin for stripping the retained loop therefrom on downward motion of the feed dog.Type: GrantFiled: September 14, 1979Date of Patent: July 14, 1981Assignee: The Singer CompanyInventors: Gerald J. Creed, Frank Dudis, William J. Edwards, Herbert T. Hurler
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Patent number: 4269129Abstract: A support plate is removably fastened to a sewing machine bed by a retaining device, which device when not in use may be depressed into a position flush with the sewing machine bed. The retaining device has two stable positions for a latch body having a flange on the upper end thereof which may retain a support plate by overlying a slot thereof.Type: GrantFiled: August 6, 1979Date of Patent: May 26, 1981Assignee: The Singer CompanyInventor: Edward J. Tullman
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Patent number: 4266494Abstract: A throat plate having means attached thereto for preventing the work limb in a loop of thread from being drawn up through the material being sewn by the take-up limb due to friction therebetween causing a loose stitch known as a halo.Type: GrantFiled: September 11, 1978Date of Patent: May 12, 1981Assignee: The Singer CompanyInventor: Stanley J. Ketterer
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Patent number: 4262615Abstract: A cover construction for a sewing machine work support column which is adapted to contain a looper and a thread-cutting device comprises an upright support member or column upon which a substantially L-shaped cover member is pivotal. The cover member includes a cover plate portion which extends horizontally in a closed position and covers the top of the device and a side portion which extends vertically in a closed position. The cover plate member is openable to a position opened outwardly from the support member in which position the cover is located in a vertical position and the side portion in a horizontal position. The side portion includes two bearing faces which are defined on the back and the bottom faces thereof, respectively, and which will abut against a top bearing surface of a locking member which is displaceable along the height of the upright support member.Type: GrantFiled: April 28, 1980Date of Patent: April 21, 1981Assignee: Pfaff Industriemaschinen GmbHInventor: Herbert Wenz
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Patent number: 4224887Abstract: A sewing machine includes a baseplate with a pedestal thereon having an upstanding column on the pedestal supporting an upper arm carrying the drive for a reciprocating sewing needle. A fabric-supporting arm extends outwardly from the pedestal and overlies one side of the baseplate below the upper arm and carries the thread-engagement mechanism, for example. The baseplate advantageously carries a bearing bushing for pivotally supporting an add-on table so that a pivot belt of the table may be pivoted about a vertical axis which is in substantial alignment with the rear wall of the supporting arm. The add-on table includes a first portion which extends at right angles to a second portion thereof and when the first portion is pivoted alongside the front end of the fabric-supporting arm, the second portion will be disposed along a side face of the supporting arm.Type: GrantFiled: January 24, 1979Date of Patent: September 30, 1980Assignee: Dorina Nahmaschinen GmbHInventor: Willi Meier
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Patent number: 4221181Abstract: A throat plate for a sewing machine having an above the bed feeding system, which throat plate provides for minimum drag on the work material. The throat plate is fashioned with a relief in which is situated a feed plate supported upon ball bearings for minimum friction, which feed plate is resiliently loaded to a central position. The throat plate is designed so that a presser foot of the above the bed feeding system will not impinge upon the movable feed plate and the feeding foot will impinge only upon the movable feed plate. Thus, work material captured between the feeding foot and the movable feed plate is not subjected to the usual drag from a stationary throat plate and, upon being released by the feeding foot, the movable feed plate returns to a starting position.Type: GrantFiled: June 4, 1979Date of Patent: September 9, 1980Assignee: The Singer CompanyInventor: Peter J. Totino
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Patent number: 4220103Abstract: An auxiliary table for sewing machines of free arm type which includes a main body, a cylindrical bed integrated with the main body, a base member fixed to the main body, a hinge plate rotatably mounted on the base member at one end thereof, and an auxiliary table engaged with the other end of the hinge plate and slidable therewith toward and away from the cylindrical bed. A plate spring is connected to the base member for downwardly biasing the hinge plate, thereby preventing the hinge plate from swinging movement and the auxiliary table from vibrating for flat work sewing. The hinge plate provides for the auxiliary table to be moved in a first position in contact with the free arm while for tubular work sewing the table can be swung in a second position separately from the arm.Type: GrantFiled: July 19, 1979Date of Patent: September 2, 1980Assignee: Aisin Seiki Kabushiki KaishaInventors: Takahiko Kasahara, Shigeharu Shichi, Senji Suito
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Patent number: 4204493Abstract: A latch mechanism for a sewing machine bed extension including a spring biased latch button contained on the surface of the bed extension. The latch button actuates one extremity of a pivotally mounted lever having a tang at the locking extremity. The bed extension has a guide stud which engages an aperture in the base of the sewing machine. The tang passes through the guide stud to lock the bed extension to the base. The bed extension may be removed from the base by actuation of the latch button which causes the tang to disengage from the base.Type: GrantFiled: August 3, 1978Date of Patent: May 27, 1980Assignee: The Singer CompanyInventors: John Blackwood, Ronald Iannarone
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Patent number: 4175500Abstract: A needleplate for a two-needle sewing machine of the type for simultaneously forming a straight stitch chain and an over cast stitch chain. The plate is provided with guide surfaces which interconnect the needle holes in the plate and a device for increasing the quantity of thread normally used by the looper associated with the needle for forming the straight stitch chain. At the completion of a sewing cycle the combination of the guide surfaces and excess looper thread permit the straight stitch chains to be moved toward and in alignment with the overcast stitch chain so that they will be incorporated together in the initial stitches formed in the following workpiece.Type: GrantFiled: April 3, 1978Date of Patent: November 27, 1979Assignee: Rockwell-Rimoldi S.p.A.Inventors: Angelo Radice, Giovanni Palacino