An Improved Mode of Constructing Trusses in Greenhouses and other Structures used for the Cultivation of Plants.

摘要

10,000. Sadgrove, W. A., and Pickering, J. W. April 25. Roofs.-The tension members of roof trusses for glass houses are formed of wire, and are attached by loops at their ends, as shown in Fig. 4, or by hooks, or enlargements engaging slots, or otherwise without heating the wire.