Repro WS No 19 Cdn battery box

[Grant Bowker]

The photos already posted give a good idea of the construction of the sides and top of the boxes but are not clear on how the base is attached. Some photos seem to show the base as a simple slab the full size of the case, somehow attached to the sides (possibly multiple screws vertically up into the sides?). Other views seem to show the long sides as reaching to the bottom of the case with the base sitting between the long sides and overlapping the short sides (apparantly screwed horizontally through the long sides and vertically on the short sides). Also, is there any information on whether the base panels were simple square edged panels or was a rabbet (or other formed joint) used to support part of the load?

I'm also puzzled about the metal reinforcing on the box corners. Many boxes, but not all, are reinforced on the vertical corners but I don't recall seeing images of any boxes reinforced around the base. Has anyone noticed a pattern to relate the presence of reinforcing to battery case size, year of manufacture, manufacturer etc.?