Officine Savio S.p.a.

Battelle Development Corporation

Hermann Pfeifer

Erwin Zurcher

Pierre M Genequand

Daniel Gross

Guy N Hindi

Reinhard Kalbskoph

The manufacturing of at least one photothermal converter element according to the invention consists essentially of implanting a multiplicity of substantially uniformly distributed parallely projecting transparent fibers onto a baseplate element provided with an absorbing coating of a normally solid material capable of being temporarily converted to a plastic state, thanks to the use of an array of guiding means arranged above the baseplate element. The implantation proper of the desired fiber structure is then performed by advancing a series of bundles of fibers through the array of guiding means, to the desired level above the baseplate element, and by clipping the advanced bundles to the desired length above the guiding means, so as to cause the falling with limited transverse spreading of the clipped fibers onto the coating of the baseplate element. This coating being concurrently converted to its plastic state, the clipped fibers are then caused to adhere to the plastic coating, which is then solidified so as to firmly secure the adhering fibers. The array of guiding means is finally withdrawn from the firmly secured fiber structure. The baseplate element thus provided with such a firmly secured fiber structure thereby constitutes a photothermal converter element.

Process and installation for manufacturing a photothermal converter

Device for cleaning an open-ended spinning turbine comprises a bell which can be fitted to a container holding the spinning rotor and which is mounted on an arm operated by a jack. The bell bears a piston of which the front tapered end probes the bottom of the throat for uniting the fibers in the rotor when the bell is joined to the container. The procedure consists in letting a certain quantity of fibers enter after breakage of the yarn so as to form a ring of fibers in the rotor and then to press this ring by means of the piston until the rotor stops, while the scraping or rubbing of the ring of fibers enables the impurities stuck in the area of the throat for uniting the fibers to be detached.

Method and apparatus for cleaning an open-end spinning rotor

A cleaning procedure consisting in imparting some ultrasonic vibrations of which the frequency is a harmonic of the natural frequency to at least one mode of vibration of a groove (1b) for union of fibres in a rotor (1) of a spinning unit, and in applying to the rotor a transducer (3) fed with current of an ultrasonic frequency by a generator (4) in such a way as to impart to the wall of the groove an energy capable of detaching the impurities lodged there so that the latter can be discharged with the help of a suction head (5) connected to a fan (6). This procedure can be employed especially at the time when the yarn is pieced-up on a spinning machine of the open-end type.

Procedure for cleaning a rotor of a spinning unit of the open-end type

A device comprising a casing which bears two distinct hinged (articulated) systems, of which one is activated by jacks and includes four arms of which two are hinged together at one of their ends while another is hinged on the casing and on the free end of the arm, and the arm is hinged on the casing and at the middle of the arm that bears a roller to disengage the cop from the drive shaft. The other system comprises two parallel arms hinged on an intermediate plate, two parallel arms hinged on the plate and on a support of the re-attachment head connected to a system of suction by means of a conduit and including two motors to drive in rotation a roller controlling the cop and to make its front part rotate by 180.degree. in respect of its rear part. In the re-attachment position the roller is employed to rotate a roller by friction located at the outlet of the turbine.

Growing community of inventors

Moillesulaz, Switzerland

Hermann Pfeifer