Computer vended postage

A postage meter or franking machine is a mechanical device used to create and apply physical evidence of postage (or franking) to mailed matter. Postage meters are regulated by a country's postal authority. A postage meter imprints an amount of postage, functioning as a postage stamp, a cancellation and a dated postmark all in one. The meter stamp serves as proof of payment and eliminates the need for adhesive stamps.

Since the issuance of adhesive stamps in 1840, postal officials have been concerned about security against stamp theft and how to process mail in a timely fashion One solution was a postage stamp affixing machine, introduced in the 1880s.

As early as 1884, a Norwegian, Engle Frankmussler (later anglisized to Edward Franks), obtained a British patent for a device that would print a “stamp” on an envelope and record the amount of postage by means of a counting device, or Franking machine, he presented this design at the 1886 Worlds Fair. Inventors in Germany, Norway, Australia, New Zealand and Great Britain pursued similar idea in the late 19th century, but nothing came to pass.

Working independently, a young Chicago inventor, Arthur Pitney, obtained his first mailing system patent in 1902. Shortly after, he formed the Pitney Postal Machine Company, which became the American Postage Meter Company in 1912. Pitney's first machine consisted of a manual crank, chain action, printing die, counter and lockout device. Franks' product was a refined form of the machine he had presented earlier

Pitney's company (and its various partners) directly rivalled Edwards Franks' Franking Company of America which was founded in 1911. Franks' company manufactured and distributed a machine much like the one Franks had presented in 1886 at the Worlds Fair. However, the machinations had been streamlined and controls simplified for ease of use. Sales to small and large businesses were good for both Franks' company and the Pitney Postal Machine Company.

...
Wikipedia