Continental Gummi-werke Aktiengesellschaft

Hans Menell

Klaus Gerloff

Gerhard De Vries

Hubert Ringhoff

Friedrich Klopper

Jurgen Rump

Ludolf Bark

The build-up drum of build-up machines is frequently interchangeably mounted on its drive shaft in order to be able to adapt to changes in dimension in the production program with one and the same machine. If the operating and control elements associated with the drum bear directly against the end walls of the drum, each change of the drum requires considerable expense for adjustments and alignments. This is avoided by providing the build-up drum on both sides with a respective spacer and abutment sleeve against which the movable operating and control elements can bear in a constantly uniform orientation relative to the middle of the drum as the critical reference plane.

Tire build-up machine

An extrusion die having pivotally mounted parts disposed at the die outlet and pivotal locking members for latching the pivotal parts closed.

Raisable extruder head for extruders

A method of producing endless drive belts of natural or synthetic rubber with thread-shaped embedded strength carriers which preferably extend in the longitudinal direction. This method relates especially to multiple V-belts and similar belts having longitudinal ribs extending continuously over the inner periphery or circumference thereof. A raw belt member is built up in upside-down sequence of layering, and is placed into an outer form or mold, in which it is formed-out and vulcanized. The belts are then turned or folded or rolled over into the use condition thereof. The raw belt member, which is produced oversize with respect to the outer form or mold, is retracted, pulled-in, or drawn-in to an outer diameter corresponding to the smallest inner diameter of the outer form, and is expanded within the outer form to, or essentially to, the original outer diameter thereof. The raw belt member may be subjected to a pressure gradient, drop or differential effective from the outside toward the inside for retracting, pulling-in or drawing-in the diameter thereof. The raw belt member has strength carriers of synthetic polymers which shrink in the heat, and may be subjected to an elevated temperature for retracting, pulling-in or drawing-in the diameter thereof.

Growing community of inventors

Hanover, Germany

Hans Menell