Shingling apparatus for applying standard manufactured shingles in successive steps to a roof comprises a frame having a wheel assembly with air driven motors which move the apparatus in a vertical motion. A hopper holds the shingles, and a shuffle bar moves across the shingles placing one shingle at...http://www.google.es/patents/US5381597?utm_source=gb-gplus-sharePatente US5381597 - Automatic robot roofer for installation of shingles
Automatic robot roofer for installation of shingles
