For protecting small windows. These provide excellent practice in bending and riveting.
Halved, tenoned, and riveted.
The Processes consist of making a full-size drawing on strong paper, for the work to be laid on while working it into shape; the frame must be made first of all in the manner illustrated in Fig. 3, but not riveted together. The interior work is then bent to shape; this can be done cold, leaving the ends an inch longer than necessary. The corners should be heated to bend them, and the cross-overs filed to fit neatly together. The frame should now be put together temporarily, and the interior work laid on the frame, and the tenons marked. The tenons should now be made, the whole thing put together, and the corners of the frame riveted together, then the other parts riveted to the frame. The grille could now be painted. Fig. 2 on plate facing page 63 shows the method for bending iron, cold or hot.
Special Features of these grilles are the bending and fitting. It is also good practice for simple designing and drawing of easy forms. For one method of bending see Fig. 2 on plate facing page 63.
Fig. 3 - Suggestions for grilles.