On Mar 19, 3:06 am, stan wrote:

Just a note re door bells.
In the late 1940-50s lived in flat on one floor of a big old house in
Liverpool.
Found remains of three different bell systems; ranging from mechanical
pull-wire, DC LeClanche cell battery room and front door bells to AC
transformer operated buzzers.
In the attic next to the big slate water tank with names written on it
from the 1890s, found the remains of a distinctively shaped actual
LeClanche cell!

I found this battery after a 100 year old house was removed.
http://i42.tinypic.com/2ept6c1.jpg
Somebody has recently smashed it, probably to remove the porcelain
base which is missing.

I was wondering what it was used for, but a doorbell is very likely.