Maschinenfabrik Rieter Ag

Rieter Machine Works, Ltd.

Anton Wuest

Robert Demuth

Herbert Stalder

Daniel Brennwalder

Andrew Barritt

Marcus Dinkelacker

The method and apparatus for supplying a reserve feed stock to a spinning machine or spinning position thereof, contemplates monitoring the operational state of a production feed stock and upon reaching a predeterminate operational state thereof, such as near depletion or depletion of the production feed stock, or even rupture thereof, bringing a reserve feed stock previously held in readiness into a production position where such reserve feed stock now assumes the role of a production feed stock. Consequently, downtime of the spinning machine or spinning position can be minimized and its operation at least partially automated since there is always available a reserve feed stock to allow for essentially continuous or continual production of a spun yarn or thread. One specific piecing technique uses a movable member for placement of a reserve feed stock into the travel path of a production feed stock such that piecing of these two feed stocks is reliably attained. Here the production feed stock may be separated by a clamping or cutting action or the terminal end thereof may be monitored so that the reserve feed stock can be pieced to a desired terminal end section of the production feed stock without the need for any separation operation.

Method and apparatus for piecing a reserve feed stock with a production

A cleaning device serves for cleaning sensing or sensor rollers which are mutually biased towards each other and between which travels a fiber sliver. Roll cleaning is effected by means of a scraper blade which, in accordance with the invention, is moved intermittently into a scraping position and away therefrom. This provides the advantages of reduced wear on the scraper blade provided at the cleaning device and also reduced wear on the peripheral surface of the associated sensing or sensor roller which is to be cleaned.

Device for cleaning at least one sensor roller and method of cleaning

Flat cleaning system for a card

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Effretikon, Switzerland

Anton Wuest