Murata Kikai Kabushiki Kaisha

Shinichi Nishimura

Teruo Nakayama

Toshifumi Morihashi

Buro Suganuma

Akihiko Takeshita

Shoji Sakai

Michiaki Fujiwara

Koshi Noda

Hisaaki Kato

Teiji Nakahara

Ikuzo Uematsu

Takashi Yoshioka

An apparatus for producing a spun yarn comprising drafting units, delivery rollers and spinning devices disposed between the front rollers of each drafting unit and the corresponding delivery rollers. The spinning device guides a sliver drafter by the drafting unit along a substantially straight line and blows air against the running sliver so that some of the component fibers in the circumference of the sliver are fluffed out and caused to wind around the fibers forming the core of the sliver, and the circumferential speed of the delivery rollers is set to be equal to or higher than that of the front rollers.

Apparatus for producing spun yarn

An apparatus for producing a spun yarn comprises a rotary pipe having a sliver path for passing therethrough a sliver forwarded from a front roller of a draft device, a rotary plate formed in an integral relationsip at a location of the rotary pipe spaced from an entrance of the rotary pipe, and a casing for covering the rotary pipe and the rotary plate. The casing has a guide path formed therein for introducing and guiding a sliver from the front roller to the entrance of the rotary pipe and guide path has a dam member disposed therein for introducing a sliver of a substantially flattened configuration forwarded from the front roller.

An air spinning method and apparatus for spinning a yarn. The apparatus includes a pipe with a fiber bundle passageway, air jet nozzles for applying whirling air currents near the inlet of the pipe, and a rotating body including air discharge passages and revolving around the pipe. In the method, the fiber bundle is passed through the pipe's fiber bundle passageway. Rear ends of some fibers are separated from the fiber bundle by air currents jetted from the nozzles so as to be rotated together with air currents by the rotating body after drawn into the discharge passage. Fibers lying in the central portion of the fiber bundle, pass through the pipe's fiber bundle passageway without being influenced by the air currents jetted from the nozzles. Fibers lying on the peripheral portion of the fiber bundle, however, are subjected to such air currents so that ends of some such fibers are separated from the fiber bundle, drawn into the air discharge passageway, whirled by the rotating body, and wound around other fibers of the fiber bundle. The spun yarn thus formed includes core fibers in substantially the same form and relationship to each other as in the fiber bundle, and winding fibers spirally wound around the core fibers along the length of the core fibers. The winding fibers are of uniform frequency and angle along the length of the core fibers.

Method of and apparatus for spinning yarn

A device for producing spinning yarn including a rotary pipe having a sliver path through which a sliver coming out from a front roller pair of a draft device is passed, a rotary plate formed integrally with and spaced from the entrance of the rotary pipe, and a casing surrounding the rotary pipe and the rotary plate. The casing has formed therein an injection nozzle which is opened obliquely toward the entrance of the rotary pipe for injecting whirling air, an air relief hole formed adjacent the rotary plate, an air whirling chamber in which air injected from the air injection nozzle whirls at a high speed, and an air relief chamber in communication with the air whirling chamber and having a gradually increasing volume.

Spinning yarn producing device

A drafting device in a spinning machine including a cylindrical sliver guide and an adjusting guide for reshaping and controlling the sliver, and a traverse mechanism for an apron supported on the middle roller. The sliver guide is disposed in front of the back rollers and the adjusting guide is arranged between the back rollers and the middle rollers.

Drafting apparatus in spinning machine

A high draft apparatus in a spinning machine for forming a spun yarn from a roving or sliver. The draft apparatus comprises back rollers, apron-provided middle rollers and front rollers and a gripping and a pressing means for a sliver disposed on the front end portion of the apron so that the arrangement of fibers in the drafted sliver is regulated and a high draft ratio can be attained.

Growing community of inventors

Ohtsu, Japan

Shinichi Nishimura