Unusual types of gramophone records Unusual types of gramophone records The overwhelming majority of records manufactured have been of certain sizes (7, 10, or 12 inches), playback speeds (33, 45, or 78 RPM), and appearance (round black discs). However, since the commercial adoption of the gramophone record (called a phonograph record in the U.S., where both cylinder records and disc records were invented), a wide variety of records have also been produced that do not fall into these categories, and they have served a variety of purposes. The most common diameter sizes for gramophone records are 12-inch, 10-inch, and 7-inch. Early American shellac records were
Berliner Gramophone though this has since been disproven. The Kämmer & Reinhardt venture did not last very long, though just how long is unclear. In the early 1890s, Berliner attempted to found his first American company, the American Gramophone Company, in New York City, but it fell apart before issuing a single machine or disc. Back in Washington, D.C., Berliner tried again under the name of the United States Gramophone Company and began to manufacture machines and 7-inch hard rubber discs in 1894. Some celluloid discs were also made. In 1895, hard rubber was replaced by a shellac compound, which in various