PERFECCIONAMIENTOS EN LAS INSTALACIONES PARA INVERNADEROS

摘要

The installation consists of a number of sliding panels provided with an individual cover in flexible plastics sheet; frames consisting of arches mounted on columns; joining spars; and means of support and rolling consisting of sheaves mounted on an axle attached to the corresp. frame. The sheaves have an angular section and rotate on longitudinal rails. The lower sheaves slide through longitudinal rails in the same way as the means of support.