Union Special Corporation

Anthony D Forte

Roy W Fletcher

Robert Briggs

Robert K Westbrook

Robert W Volkmann

A mechanical latch tacking device carried by the toe of the sewing machine presser foot that will allow the operator to produce a relatively short stitch chain at the end of a seam and in a single smooth ergonomical motion cause the chain to be severed and the end of the chain that extends from the needle retained in a location where the next workpiece is started the retained chain will be sewn into the seam.

Latch taking knife and thread clamp

A button clamp assembly having an unalterable pivot and provided with interchangeable turret assemblies which cooperate with other universal assemblies in controlling the planar displacement of the articles being delivered to the machine's sewing station. The interchangeable assemblies are mounted in a manner permitting a consistent clamping relationship to be maintained between the turret assembly and the machine's work support regardless of the article's thickness or ligne/diameter.

Button clamp assembly

A thread separating finger used in combination with a knife assembly adapted for cutting thread utilized in a sewing machine with said assembly having first and second levers, each lever having first and second end portions and a medial portion therebetween, said first end portion of said second lever defining a first cutting blade portion, first means at said second end portion of said second lever for mounting said second lever for pivotal movement, a link having first and second end portions and a medial portion therebetween, said first end portion of said link defining a second cutting blade portion cooperative with said first cutting blade portion for cutting a thread therebetween upon relative pivoting motion between said link and said second lever, second means pivotally connecting together said medial portions of said link and second lever, and third means pivotally connecting together the first end portion of said first lever and the second end portion of said link whereby motion imparted to the second end portion of said first lever creates said relative pivoting motion between said link and said second lever to cut a thread adapted to be disposed between said first and second cutting blade portions. The thread separating finger moves into the loop of thread ahead of the cutting blades and separates the legs of the loop to insure that only one of the legs will be cut.

Thread separating finger

An automatic button feeder is disclosed including a lifting mechanism arranged for facilitating disengagement of the orientating mechanism associated therewith. The lifting mechanism includes a slideably supported member means which is connected to the orientating mechanism of the button feeder by means of a curved leaf spring. An actuator, which is responsive to movement of the button clamp lifting mechanism, moves the slideable member, and thus the orientating mechanism connected thereto, whereby facilitating disengagement of the latter in timed relation to the sewing cycle.

Button orientating lifting mechanism

Force is delivered from a looper drive crank to a nut and bolt assembly having clamped thereto the inner races of first and second bearing sets. A spacer separates the bearing sets. The outer races of the bearing sets are press fit into the bore of a housing from which force is transmitted to a looper link.

Growing community of inventors

Chicago, IL, United States of America

Anthony D Forte