7 Machines, in particular pneumatically operated machines, namely, mixing machines, applying machines, inserting machines and dispensers, for mixing, applying and inserting plastic and/or elastic materials, repair materials, sealing materials and/or anti-corrosion materials, in particular sealing materials and anti-corrosion materials made of bitumen, bituminous materials, polyurethanes and mixtures of these materials for pipelines and pipes and in cracks of anticorrosion encasements in warmed or heated form as well as cold form