| 摘要 |
443,676. Compound sheet materials; floors. AGASOTE MILLBOARD CO., Fernwood Road, Ewing Township, New Jersey, U.S.A. June 4, 1935, No. 16193. Convention date, Aug. 4, 1934. [Class 140] [See also Group X] A composite flooring material, which may be assembled prior to or during application to the floor, comprises a rigid, thick, resilient, heat- and sound-insulating, fibrous base A such as pulp board, a thin, impervious covering sheet B, e.g. of rubber, a resilient, non-ductile intermediate sheet C such as steel or vulcanized fibre, and individual spacing means G, H between the intermediate sheet and the base board. The rubber and steel sheets are united by adhesive. The spacing means consist of heads g<1> of rivets G some or all of which may be secured, as by welding, to the steel sheet, or washers H which may also be welded to the steel sheet, or both. The rivets may be perforated so that nails I may be driven through to secure the covering to a floor E<1>. Securing nails may also be driven through the composite flooring near the edges, perforated spacing washers such as H being preferably employed. The apertures left in the rubber by such nails, or previously formed, are filled with rubber cement K. Alternatively the rubber sheet may be left unsecured near the edges and cemented down after nailing to the floor. The steel and pulp-board layers may be united by means of the rivets G, or by clamping. Specifications 7301/08, [Class 96], and 370,391, are referred to. |
