Union Special Corporation

Juki Corporation

Wolf R Von Hagen

Hermann Gauch

Erwin F Jurgens

Johannes K Strauss

Osamu Kawamoto

A sewing machine with an upper feed mechanism includes: a sewing machine head; a needle plate; first, second and third shafts each extending from the sewing machine head vertically downwardly toward the needle plate, each shaft having a lower end; a needle secured to the lower end of the first shaft; a feed element having one end carried by the lower end of the second shaft and the other end located forwardly of the path of the needle; an upper feed dog formed in the other end of the feed element and confronting the needle plate; and a presser foot mounted to the lower end of the third shaft, wherein the first, second and third shafts being moved in timed relation to one another so as to allow a workpiece to be sandwiched between the presser foot and the needle plate, and the upper feed dog cooperating with a lower feed dog located below the needle plate to clamp and feed the workpiece to the path of the needle whereby stitches are formed, and wherein the first, second and third shafts are juxtaposed in that order in the direction in which the workpiece is fed.

Upper feed mechanism for sewing machine and sewing machine having the

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 mounted on the guide stud. The guide stud as well as the bushing are provided with openings through which the looper shaft extends.

Looper drive for a chainstitch sewing machine

A thread control device comprising, a rotatable disc assembly for controlling a thread and having a rotational axis. The device has a knife located on at least one side of the disc assembly and having a cutting edge disposed generally parallel to the rotational axis of the disc assembly.

Looper thread control with anti-spin cutting knives

A work advancing mechanism for a sewing machine which includes a driven circulatory belt for positively advancing the work beneath the presser foot of the machine. The belt is entrained about and driven by a wheel assembly having an adjustable operative circumference for modulating the lineal advancement rate of the belt.

Sewing machine belt feed with variable pitch drive pulley

A sewing machine presser foot attachment including a driven feed wheel proximately arranged relative to the reciprocal path of a needle. The feed wheel is powered by a drive shaft arranged to the rear of the feed wheel in the direction of sewing. A constant velocity universal joint arranged between the drive shaft and feed wheel permits vertical and horizontal pivotal movement of the feed wheel relative to the work supporting surface of the machine.

Sewing machine having a driven feed roller

A lubrication system for eccentric drives in a sewing machine wherein lubricant is fed through a hollow drive shaft and communicative radial ports. At its outlet end, the radial port is in fluid communication with a lubricant reservoir arranged on the eccentric's periphery. The lubricant reservoir being disposed on that portion of the eccentric's periphery measuring the greatest distance from the eccentric's rotating center.

Sewing machine lubrication system

A mechanism for seizing and holding a thread, particularly the looper thread, of a chainstitch sewing machine to insure needle penetration of the thread triangle thereby assuring enchaining of the needle thread with the looper thread. Such mechanism includes an oscillatable thread spreader which transversely moves across the looper's endwise path of travel. The spreader motion being in timed relation with the stitch forming instrumentalities such that its effectively travel extends between the looper eye and the reciprocal path of the needle arranged closest to the looper eye when the looper is at its extreme loop seizing position.

Sewing machine loop spreading mechanism

A device for automatically supplying a strip of elastic tape material to a sewing machine under tension. The device uniquely combines a tape supply mechanism, for tractively propelling the tape, and a tape tensioning assembly which guides the tape along a predetermined path of travel while measuring the amount or degree of tape tension. The tape supplied is under the control of the tape tensioning apparatus which may include a mechanism for selectively modulating the degree of tape tension.

Metering device for sewing machines

A needle bar bushing having a lubricant seal for reducing excess lubricant on the needle bar of a sewing machine. The lubricant seal includes a plurality of vertically aligned scraping portions including at least two similarily disposed conical scraping edges situated over a portion of the length of the needle bar bushing. The conical scraping edges being arranged in surrounding engagement with the needle bar for stripping and leading excess lubricant from the peripheral surface of the needle bar thus reducing the danger of lubricant working its way through the bushing and being thrown onto the work being sewn as a result of needle bar reciprocation.

Needle bar lubricant sealing device

The present invention relates to a device for monitoring fluid flow through a pressurized lubrication system. The device includes a reciprocally arranged indicator that is responsive to fluid pressures within the lubrication system for exteriorally indicating the lubricant flow as a function of the reciprocal position of the indicator.

Lubricant sensing device for sewing machines

The present invention relates to a material dispensing apparatus having a unique closed loop servo system for advancing material to a receiving machine in accordance with the use demands thereof.

Growing community of inventors

Hemmingen, Germany

Wolf R Von Hagen