Matches 1 - 50 out of 121 1 2 3 >
Match Document Document Title
7565873 Sewing machine  
A sewing machine includes a rotating hook, a lower shaft rotating the rotating hook in synchronization with vertical movement of the needlebar, a lower shaft gear including a helical gear and...
6923130 Sewing machine  
A sewing machine with a hook ( 8 ) that is drivable in rotation about a vertical axis comprises a bobbin case ( 21 ) with a lifter cam ( 31 ). A case lifter ( 33 ) is provided, having a sensing...
6748887 Vertical axis hook for lockstitch sewing machine, with screw-adjustable needle guard plate  
A vertical axis hook ( 10 ) for a lockstitch sewing machine comprises a hook body ( 11 ) with a hook point and a peripheral needle guard plate ( 12 ) mounted on the hook body, the plate comprising...
5628263 Chain stitch sewing machine with looper drive and lock arrangement  
In a chain stitch sewing machine which performs a required chain stitch sewing with respect to a cloth to be processed, by cooperation of a needle reciprocable up and down and a looper arranged...
5456195 Opener for horizontal rotary shuttle  
A sewing machine having a projection formed on an inner shuttle of a shuttle-inner shuttle assembly to prevent the inner shuttle from being rotated in the same direction in which the shuttle is...
5433159 Horizontal rotating hook for sewing machine  
A horizontal rotating hook for a sewing machine which has a structure so that an opener mechanism, which is adapted to wear and provide noise, is not required. The opener structure is avoided by...
5249536 Embroidery sewing machine  
A looper is rotated under a throat plate, a stitching needle moves up and down through a needle hole formed in the throat plate and thus a cloth on the throat plate is stitched. After the cloth has...
5109782 Cover plate and bobbin holder thread tensioning guides  
A bobbin-thread supply device for a sewing machine. The operator inserts the bobbin into the bobbin holder, draws bobbin thread from the bobbin, and passes the tip of the bobbin thread through the...
5048438 Sewing machine bobbin thread tension control device  
The feed dog (17) for the fabric in a sewing machine is provided with a spring-wire (21) bent and passing through a hole of a support (23). When the feed dog (17) is in its upper position, the...
5044292 Sewing machine with lower thread supply control means  
An amount of a lower thread to be supplied from a bobbin in each stitch forming operation is first determined on a theoretical basis in accordance with the stitch control data stored in a pattern...
5025737 Automatic bobbin thread guiding apparatus  
An automatic bobbin thread guiding apparatus in combination with a sewing machine has a work supporting bed, a throat plate, a shuttle race slide and a horizontally rotating shuttle. A bobbin...
5003896 Device for guiding a lower thread in a sewing machine  
A device for guiding a lower thread in a zigzag stitching sewing machine is provided with a lower thread guiding unit that determines two lower thread drawing positions in accordance with a...
4993335 Hooking arrangement for two-needle lockstitch sewing machines  
A two-needle lockstitch sewing machine apparatus providing a hooking arrangement such that each thread loop is positioned in the same direction in relation to the needle position. The hooking...
4991526 Bed plate insert and presser foot, each having a guide surface for laterally supporting a sewing machine needle  
A relatively long needle (22) is supported at the lower end of a needle bar (28). The needle bar (28) and needle (22) are moved up and down and forwardly and rearwardly. The needle bar (28) and...
4970975 Rotary looptaker  
A rotary looptaker includes a looptaker body rotatable about a vertical axis and a bobbin case restrained from rotary motion with the looptaker body. A plurality of annular protrusions are provided...
4966088 Composite rotary loop taker for lock-stitch sewing machine  
A composite rotary loop taker which includes a loop seizing point mounted on a substantially annular frame, for use in a lock-stitch sewing machine. The loop seizing point forms a smoothly curved...
4938158 Lower thread supplying mechanism for a sewing machine  
A sewing machine having a vertically reciprocating needle carrying an upper thread, a needle plate secured to a sewing machine housing and provided with a needle penetrating hole, a loop-taker...
4926770 Needle hole guide mechanism for zigzag sewing machine  
A zigzag sewing machine includes a needle hole member having a round needle hole of a diameter slightly larger than that of a stitching needle. The needle hole member engages a laterally elongated...
4920903 Device for adjusting a lower thread in a sewing machine  
A lower thread tension adjusting device for a sewing machine comprising first and second tension arrangements mounted on a bobbin carrier of the sewing machine for tensioning a lower thread with a...
4856443 Needle thread tensioning device for a swing machine  
A thread checking device is installed in combination with a sewing machine in order to exert a proper tension on the thread loop formed at the eye of the needle when the thread loop passes through...
4748925 Opening plate for attaching a lower thread bobbin of a sewing machine  
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...
4714037 Needle looper assembly for non-threaded needle lockstitching  
A needle looper assembly for a lockstitch sewing machine wherein the upper thread is retrieved by a sewing needle extending through a work material, which sewing needle has an extensible hook...
4694763 Sewing machine bed slide retention  
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...
4693193 Device of guiding drawing-out of a lower thread from a horizontal bobbin carrier of a sewing machine  
A lower thread drawing-out device for a computerized sewing machine, the device having a cup-shaped loop taker with a surrounding wall. The loop taker is rotatable in a timed relation with a...
4601250 Rotary loop taker for lock-stitch sewing machine  
A rotary loop taker which includes a replaceable loop seizing point mounted on a substantially annular frame, for use in a lock-stitch sewing machine. The loop seizing point has a supporting lug...
4579072 Zig zag sewing machine needle  
A sewing machine needle is capable of vertically reciprocating between upper and lower dead points and swinging laterally within a predetermined amplitude between two extreme lateral positions to...
4566395 Sewing machine needle thread capturing and severing mechanism  
A sewing machine has a bobbin mechanism, a sewing needle mechanism, and a mechanism capturing and severing bobbin thread comprising a stationary blade, a picker having at least one hook for...
4520743 Needle thread tensioning device for a sewing machine  
Opposing plates of a thread tensioning device for use on a lock stitch sewing machine in a thread handling system wherein needle thread is caused to pass between elongate members of a thread holder...
4493278 Rotary loop taker for lock-stitch sewing machine  
A rotary loop taker, for use in a lock-stitch sewing machine, which has a detachable and replaceable hook or loop seizing point. A lug extending downwardly from the main body of the replaceable...
4481897 Clutching arrangement for a sewing machine bobbin  
A clutch which is engaged to rotate and wind thread on a sewing machine bobbin is provided with clutch parts that include a single bladed paddle, and a member with a pair of crossed paddle...
4466368 Lock stitching sewing machine with a thread tightening device  
A thread tightening device for a sewing machine of the type having a main shaft, a vertically reciprocable needle bar with a needle carrying an upper thread, a loop taker and a drive shaft for...
4461228 Sewing machine frame construction  
A sewing machine having a underbed hook rotatable in a horizontal plane includes a needle bar tilted at an angle with respect to a vertical line to displace a sewing needle rearward to a retracted...
4458613 Sewing machine with bobbin thread tension adjusting device  
A sewing machine having a drive shaft rotated by a machine motor to vertically reciprocate a needle carrying an upper thread is provided with a device for adjusting the tension of a lower thread...
4458611 Needle bar guide for a zig zag sewing machine  
A non-rotatable, disc-like bobbin carrier is nested in a cup-shaped, vertical axis, rotary loop taker that slidably supports the bobbin carrier at its periphery on an annularly extending,...
4457244 Rotary-gripper counter-hook for double-lock-stitch sewing machines  
A double-lock-stitch sewing machine has a reciprocating needle forming an upper-thread loop with the aid of a rotary gripper assembly. The loop is carried by and formed by a main hook or point of...
4437421 Variable pull off for bobbin thread  
A variable under thread pull off device in a sewing machine for providing the proper amount of slack in the bobbin thread to effect uniform stitch formation. The device will pull off a varying...
4413579 Bobbin case retaining means  
A bobbin case positioning and retaining structure of one piece unitary construction for maintaining the bobbin case in proper operating position. The bobbin case is held captive without the need...
4406174 Noise reducing arrangement for gears  
The meshing bevel gears used to drive the vertical axis looptaker of a sewing machine are preloaded with a compressed resilient member which is prevented from deflecting to a position beyond its...
4397250 Thread controlling arrangement for bobbin winding mechanism  
A sewing machine bobbin case is provided with a thread tensioning device that includes a pivotally movable arm which is spring biased into a position preventing thread from entering the device...
4389955 Thread holding finger for bobbin winding mechanism of a sewing machine  
A thread engageable finger for guiding needle thread into a thread receiving slot on the bobbin case of a sewing machine, as a seized loop of the thread is moved about the bobbin case by a...
4385574 Thread guiding and hold-down pawl for bobbin winding mechanism of a sewing machine  
A control arm for bobbin winding mechanism in a lockstitch sewing machine is provided with a pawl which serves both to guide needle thread into a thread entering slot for a tensioning device on a...
4365567 Modified thread control lever for a bobbin case  
A bobbin case for a lockstitch sewing machine is disclosed which contains a thread control lever so constructed to allow the bobbin to be manually threaded from any direction without incurring the...
4363282 Device for retaining inner shuttle member against rotation  
A device for preventing the rotation of the bobbin case member of a horizontally fully rotatable shuttle comprises a retaining member adapted to contact one portion of the inner shuttle member for...
4356781 Thread handling arrangement for sewing machines  
A thread handling system for a sewing machine is provided with elongate thread holding members formed for frictional contact of both members with thread during movement of the thread in the holder...
4355590 Variable bobbin thread control for lockstitch looptaker  
A bobbin thread control comprising a bobbin thread pull-off, carried by a rotating lockstitch looptaker to pull bobbin thread from a bobbin after the previous stitch has been set and having a...
4348969 Sewing machine with a horizontal-type loop taker  
A thread loop regulating arrangement is provided in a sewing machine having a reciprocated swingable needle carrying an upper thread and a loop taking arrangement including a rotatable loop taker,...
4326474 In-place bobbin winding mechanism for a sewing machine  
A bobbin resting on a bobbin case in the vertical axis looptaker of a sewing machine is provided with a slidable plunger which is biased into a position wherein the bobbin is disconnected from the...
4320712 Thread handling  
A thread handling device is disclosed in a type 301 lockstitch rotary hook loop taker sewing machine having a three-to-one hook to arm shaft ratio for controlling and metering slack needle thread...
4316421 Anti-haloing throat plate  
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...
4299181 Bobbin thread tension device  
A bobbin thread tensioning device on a bobbin case is provided with a pair of bobbin thread accepting members, one of which is biased toward the other by an adjustable spring. The thread accepting...
Matches 1 - 50 out of 121 1 2 3 >