Thomas Crapper was an English businessman and plumber. He founded Thomas Crapper & Co in London, a sanitary equipment company. Crapper held nine patents, three of them for water closet improvements such as the floating ballcock. He improved the S-bend plumbing trap in 1880 by inventing the U-bend.

Did Thomas Crapper actually invent the toilet?

In the late-19th century, a London plumbing impresario named Thomas Crapper manufactured one of the first widely successful lines of flush toilets. Crapper did not invent the toilet, but he did develop the ballcock, an improved tank-filling mechanism still used in toilets today.

What crapper means?

noun Slang: Vulgar. a toilet. a bathroom.