Maschinenfabrik Rieter Ag

Grapha-holding Ag

Maschinenfabrik Reiter Ag

Raphael Wicki

Urs Keller

Peter Geiser

Erich Jornot

A book cover paper that is to be glued to a book block back has material scooped out on the side facing the book back, reducing the thickness of the cover paper at least over the width of the book block back, before the cover paper is joined to the book block back.

Method for gluing a cover paper to the back of a book block formed from bound printed sheets

Draw frame, storage device and coiler, delivery regulation

For use in a spinning mill, the apparatus is used to even up the mass of sliver being conveyed, for manufacturing perfect roving yarns. The evening up takes place by measuring the thickness of the sliver after it has been compressed to a certain volume in a gap between two rollers. One roller is rigidly arranged, whereas the other is supported in a resilient manner or has a resilient portion. Movements by the resilient roller are indicative of the extent of the deviations in the thickness of the conveyed sliver, and the movements of the resilient roller are monitored by a sensor which sends signals for controlling devices for facilitating the evening up the amount of the sliver mass being fed. By means of the arrangement of rollers, the apparatus does not generate oscillations which would alter the measured results from the measuring rollers under certain operational conditions. The measuring apparatus is arranged from a constructional point of view in such a manner that its natural oscillations are such that it provides precise measured values under all operational conditions. In addition, the material is easily fed into the measuring device.

Apparatus for measuring the mass of a sliver

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Aadorf, Switzerland

Raphael Wicki