For your information, from the ever-useful Wikipedia--

Otto Frederick Rohwedder is considered to be the father of sliced bread. In 1912 Rohwedder started work on inventing a machine that sliced bread, but bakeries were reluctant to use it since they were concerned the sliced bread would go stale. It wasn't until 1928, when Rohwedder invented a machine that both sliced and wrapped the bread, that sliced bread caught on. A bakery in Battle Creek, Michigan was the first to use this machine to produce sliced bread.

For those of you fond of the cliche "the hottest thing since sliced bread"...

Now you know!

Gotta love that Wikipedia!