Matches 1 - 50 out of 131 1 2 3 >
Match Document Document Title
7600481 Upper looper driving device of sewing machine  
An upper looper driving device of a sewing machine is provided. The device includes an upper looper driving shaft which is rotatable around an axis thereof, an upper looper holder having an upper...
7536964 Sewing machine  
A sewing machine includes an upper looper formed with a thread hole, an upper looper shaft which oscillates the upper looper between an upper position and a lower position, switching means operable...
6880472 Looper threading apparatus for sewing machine  
A looper threading apparatus includes a threading member capable of holding a thread in a tip portion and inserting the thread through a thread hole, a guide member for movably accommodating the...
6814015 Looper and knife driving mechanism for sewing machine  
In a looper and cutter drive mechanism for sewing machine, an upper looper and a lower looper are respectively disposed below a throat plate, respective loop-taker points of these loopers are...
6450109 Feeding device for a hemstitching machine  
A feeding device for a hemstitching machine includes a base having a feeding end with a protrusion extending from the feeding end and being inclined relative to the plane of the base. A slot is...
6422165 Apparatus for preventing raveling of seam  
An apparatus for preventing the raveling of a seam wherein a looper thread hanging hook for catching a looper thread which is allowed to pass through a loop of a needle thread immediately before...
6343558 Shuttle apparatus for high-speed lacing of an article  
An apparatus for high speed attachment of a cord to a piece of receiving material is characterized by one or more pins which engage the cord, pierce the receiving material and draw the cord through...
6119613 Method and apparatus for preventing a seam from raveling in double chain stitch sewing machine  
A method and apparatus for preventing a seam from raveling in a double chain stitch sewing machine according to the present invention are applied to sewing of cloth by a double chain stitch sewing...
6109195 Over-lock sewing machine  
An over-lock sewing machine executing an over-edge chain stitch and a double-chain stitch includes a sewing machine motor for driving a needle bar so that the needle bar is moved upward and...
6047653 Sewing machine with a take-up lever moving up and down through one cycle per revolution of a rotary cylindrical hook base  
A sewing machine for forming a "lock stitch" in a fabric material includes a reciprocally-mounted needle bar, a reciprocally-mounted needle thread take-up lever, and a rotary hook assembly located...
5875723 Portable carpet binding machine  
A portable carpet binding machine comprising a housing defining an interior region, a drive mechanism supported by the housing and at least partially disposed in the interior region, a prime mover...
5865132 Looper drive for a buttonhole sewing machine  
A looper drive assembly for a buttonhole sewing machine includes a long arm which is driven by a double cam, followers and an oscillating plate at one end and the arm generally reciprocates...
5848572 Skip stitch prevention apparatus for sewing machine  
A mechanism for a sewing machine for use in forming stitches by use of a looper thread which is controlled by a looper. This mechanism is adapted so that the looper thread which is run from a...
5732639 Right looper release mechanism in overlock sewing machine  
A right looper release mechanism in an overlock sewing machine is disclosed comprising a vertically movable needle having a needle thread, a right looper disposed under the vertically movable...
5704302 Looper device having a thread feeding mechanism  
A looper device includes a rod slidably supported in a sewing machine and allowed to move up and down. A looper is secured on the upper end of the rod and includes a hole formed in the front end...
5676077 Multi-needle chain stitch sewing machine with thread severing system  
A multi-needle chain stitch sewing machine with a thread thread severing system and method thereof for cutting needle threads between two isolated stitched patterns of a fabric. The multi-needle...
5546878 Looper drive mechanism for sewing machine  
A looper drive mechanism for a sewing machine includes: two loopers; looper drive shafts for driving the loopers; a main shaft extending across one plane transverse to the looper drive shafts; and...
5544604 Three needle stitch with cover thread  
A method of forming a stitch and the stitch which includes three needle threads and cooperating looper threads for forming three parallel rows of stitches that are joined by a spreader thread that...
5540162 Looper drive for a chain stitch sewing machine  
A looper drive for a chain stitch sewing machine that includes a flexible connection that includes an intermediate guide rod that extends between a crank arm and the looper shaft. The intermediate...
5517933 Cover thread assist member  
A mechanism and method for forming a facing seam at a relatively high rate that will insure that the cover thread is properly interwoven between each stitch of two parallel rows of stitches. The...
5481994 Thread cutter for a chainstich sewing machine  
A thread cutter for a chainstitch sewing machine includes a base plate, a cutter arm, a pincher, a cutter, a hook rod arm, a hook rod and a swing arm combined together. The hook rod arm is movably...
5465674 Overedge stitch sewing device  
An overedge stitch sewing device comprising a straight sewing needle and a lower looper that travels in a curved path and has advanced timing relative to the sewing needle. The device may also...
5445091 Looper for a single-thread chainstitch sewing machine  
A looper (2) for single-thread chainstitch sewing machines comprises for the purpose of forming a chainstitch a thread guiding surface (22), which is disposed substantially parallel to the feed...
5431118 Dry sewing machine including loop spreader  
A dry sewing machine, or a sewing machine which can be operated without oiling. The machine of the preferred embodiment is particularly adapted for making a type 401 two thread chain stitch, used...
5347941 Looper thread guiding mechanism for facilitating the looper thread setting to a looper  
A looper thread guiding mechanism for facilitating setting of the looper thread to a double loop looper. A drum is rotatably provided at a side portion of the looper having a thread hole at a tip...
5315945 Apparatus and method for thread supplying in a chain stitch sewing machine  
An apparatus and a method for supplying thread in a chain stitch sewing machine are disclosed, the apparatus comprising a needle vertically reciprocating between a top end point and a bottom end...
5275116 Cam and wobble follower looper drive for sewing machine  
A radially facing circumferential surface of a cam, in at least some planes which radiate from the cam axis, includes lines which are inclined relative to the cam axis. The inclinations of these...
5269240 Overcast sewing machine for forming a multiple-thread overcast seam  
An overcast sewing machine in which a plurality of different stitch types can be sewn. Various designs are disclosed for sewing alternatingly the stitch types 512 and 514, which consist of two...
5269238 Quilting machine loopers with linkage/piston driven thread cutters  
An electronically controlled multi-needle quilting machine including linking cylinder arranged between an eccentric integral with a rotating spindle and a lever, to drive in an oscillating motion a...
5249538 Sewing apparatus equipped with an automatic thread supply device  
A sewing apparatus displays a stitch pattern and forcibly supplies a thread based on the displayed stitch pattern. The apparatus comprises a sewing mechanism, an automatic thread supply device, a...
5237942 Overlock sewing machine having upper and lower looper thread takeup lever drive mechanisms  
An overlock sewing machine which is arranged such that a lower thread take-up lever is disposed independently of an upper looper thread take-up lever and that a lower looper thread take-up lever...
5233935 Looper throw-out safety catch device  
A looper throw-out device containing a latch for catching the release lever of the looper throw-out device when the release lever is left in the unlocked position. The latch is mounted on the...
5215022 Looper conversion method  
An attachment for a looper is provided whereby one looper of a three (3) or more thread serger can be converted into a spreader for use during stitch formation. The attachment comprises a resilient...
5168821 Sewing machine having a threading device  
In threading an eyelet of a looper of a sewing machine, a slide member is displaced until a positioning portion of the slide member comes into contact with the looper. In this contact condition, a...
5134948 Overlocking sewing machine and method for performing overlock sewing in overlocking sewing machine  
An overlock sewing machine having a loop spreading member which provides a retracted position and an operative position. In the retracted position, the loop spreading member is moved away from one...
5076181 Threading apparatus for a lower looper of an overlock sewing machine  
A threading device for threading a lower looper of an overlock sewing machine, an orifice and a slot are formed in an arm of the lower looper, a hook if formed on a rear end of the arm and obliqued...
4991525 Driving mechanism for the upper looper in overlock sewing machines  
The driving mechanism comprises a driving arm (10) fastened to a drive shaft (9) operated with an oscillatory movement about its own axis. Pivoted to the free end of the driving arm (10) is a...
4984526 Thread chain guiding device for overedge sewing machines  
A thread chain guiding device provides a needle-thread-guide plate which extends underneath a throat plate by energizing a solenoid as needed. Thus, the needle-thread-guide plate pushes the needle...
4977842 Overlock sewing machine with a threading mechanism for easily threading a looper  
This invention provides an overlock sewing machine with a threading mechanism that is both easier and more efficient to use. As shown in FIGS. 1 and 7, the overlock sewing machine has a vertically...
4974534 Double chain stitch sewing machine having a looper and a looper thread spreader  
A sewing machine with a housing having a base over which the workpiece is movable and with a drive shaft is rotatable in the housing. A needle bar is provided having a plurality of needles and is...
4967677 Composite sewing machine with single needle for lock and overlock stitches  
A composite sewing machine has a lock stitch mechanism and an over-lock stitch mechanism. A switching mechanism is connected to the stitching mechanisms for switching the operation of the sewing...
4942834 Looper shifting device in overlock sewing machine  
The present invention relates to a looper shifting device in an overlock sewing machine having an upper looper and a lower looper and capable of looping the end of the cloth by one needle with use...
4917033 Thread guiding device for a rotary looper thread take-up  
A cam shaft of a rotary looper thread take-up is extended short of a thread guide and thus provides a free space there-between. A thread introduced from the tip-end-side of the cam shaft is...
4884518 Overcasting attachment for use with a sewing machine  
An overcasting attachment for use with a sewing machine includes a cross thread guide lever driving mechanism for transmitting the movement of a needle bar interlocking mechanism operatively...
4840134 Machine for producing a triple-thread chain stitch for sewing webs over an edge  
A triple-thread stitch is intended for sewing webs of netting over their edges, wherein one thread (2) forms straight loops (3) and two other threads (4 and 6) form turned loops (5 and 7). In the...
4799440 Looper changeover device  
A looper changeover device for a sewing maching capable of making overlocked stitches is improved by having a manually operable, rotatable selector mechanism for securing and selectively...
4799439 Double purpose looper for overlocking sewing machine  
A looper for a sewing machine capable of making overlocked stitches has a unitary distal portion which is operable for the selective production of overlocked stitches with one needle and three...
4782776 Looper to machine for sewing-up netting webs  
A triple thread chain stitch machine for sewing netting. A knee shaped needle (1) is mounted on a reciprocating bar (2). A stud on the needle is received by the bar (12) for rotation about the...
4779550 Looper drive for a chainstitch sewing machine  
A looper drive for a chainstitch sewing machine comprising a rigid guide stud which is part of a support member for a looper shaft. The rigid guide stud is surrounded by a bushing which is swivably...
4742787 Hook drive for chain stitch sewing machines, particularly for hand-holdable ones  
A hook drive for chain stitch sewing machines, in particular for those suited to be hand-held, which comprises an upper hook and a lower hook of curvilinear configuration having a hook holding...
Matches 1 - 50 out of 131 1 2 3 >