The diagrams show a catch suitable for a large lamp. Fig. 1 is a front elevation of the angle iron forming the bottom of the door, with a small rectangular box riveted upon it, in which a flat bolt is arranged, so as to slide up or down. Fig. 2 is a plan of the T and angle iron, box with slot in top and opening at bottom, and also an iron plate riveted on the underneath side of I-iron, a slot being cut in this for the bolt to slip into to fasten the door. Fig. 3 is a section on the line A B, showing the position of bolt in box, and projecting plate on T-iron with slot for bolt to enter.

Catch for Fastening Door of Street Lamp.