They were still installing stuff like that in the sixties. My fathers house had a similar arrangement. It was quite common to bridge the fuses as they were not easy to get and were expensive. The sensible people used fuse wire, others used foil or anything else that fitted. I blew the company fuse in a friends house when I tried to make an electro magnet and didn't have enough turns (well I was only seven). The circuit fuse didn't blow because it was bypassed with a nail.