Improvements in portable stands or trestles

摘要

168,177. McLellan, Q. S. June 10, 1920. Tripod and like stands.-Relates to collapsable trestles for supporting a board indicating that a street is under repair. The trestles are constructed as shown in Fig. 1, the ends of the board being supported in slotted brackets E. Each trestle comprises a tube A with three folding legs D, the legs being connected by tie-rods H to a sliding ring F. A rod J can be inserted in the top of the tube A for the purpose of supporting a lamp K.