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Ritty Model 1 Cash Register
1904

"Ritty's Incorruptible Cashier"
In 1879, the brothers John and James Ritty of Dayton, OH, built a model of a machine to keep track of the money received in a store. They patented their invention and began to manufacture "Ritty's Incorruptible Cashier." Eventually, the brothers sold their firm to one of their few customers, John Henry Patterson, who renamed the company National Cash Register (NCR). Patterson and his associates modified the machine into a successful product. The Ritty's original model does not survive, but NCR exhibited a replica (shown here) at the St. Louis World's Fair in 1904.

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