Eisenwerk Weserhutte Ag

O&k Orenstein & Koppel Aktiengesellschaft

Weserhutte Aktiengesellschaft

Thorwald Kipp

Bernhard Wiechers

Wolfhart Dittrich

Udo Sudmersen

Gerhard Luhr

Willibald Kamm

W F Kamm

Erich Poggemeier

Helmut Heuer

Ulrich Fritz

Open-cut mining cutter

This invention relates to an improvement in a roll crusher which crushes loaded material by impact and pressure, comprising a crusher housing, a loading hopper, a rotatable roll holding impacting tools, and fixed or adjustable crushing bars mounted to the crushing wall of the crusher housing, the improvement comprising two mutually oppositely rotatable rolls, each independent of the other and adapted to crush the material, mounted together with two oppositely located crushing walls in one common crusher housing, and a roof-like chute means mounted above a gap between the two rolls and adapted to distribute the material in the hopper and feed it to crushing regions.

Crusher with impacting bars

This invention relates to an improvement in the process for improving the impregnability of wood which is pierced on its surface prior to an impregnation procedure by means of solid, circular needles which are guided essentially perpendicularly to said wood surface, without thereby causing chipping or splintering, the improvement comprising using sharp, circular needles with smooth surfaces, rotating about their central axes, and at an essentially constant ratio of the peripheral speed (u) of these needles to their speed of advance (v) with which they drive into the wood.

Process for improving the impregnability of wood

This invention relates to a process for introducing holes or straight or circular slots approximately normal to the surface in the vicinity of the surface of round timber and to an approximately predetermined depth for the purpose of facilitating the penetration of impregnating means into the surface zones of the timber to better protect against chemical and biological attacks.

Process for punching holes and slots in structural timber

Growing community of inventors

Bad Oeynhausen, Germany

Thorwald Kipp