How interesting you should refer to the heads as a Crapper. Capital C of course. Thomas Crapper was a very high class sanitary engineer
in London. He installed the plumbing
systems in many of the great English
stately homes. Near to where I live is a country mansion with cast iron manhole covers (sorry I should say person hole covers) enscribed "Thomas Crapper." Also were the lavatory pans so enscribed, hense the toilet became know as the crapper. Give a wise person instruction and he or she will be yet wiser.
Charlie Crapper - Shore