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Presto 8N Disc Cutting Lathe (1950) used by the Canadian Broadcasting Corporation to record radio programs. A disc cutting lathe is a device used to transfer an audio signal to the modulated spiral groove of a blank master disc for the production of phonograph records.
Presto 8N Acetate disc engraver (1950) used by the Canadian Broadcasting Corporation to record radio programs. Before the introduction of magnetic tape for mastering, disc recording was done "live" (see direct to disc recording), although sometimes intermediate disc-to-disc editing procedures were involved. [2]
Presto 8N Acetate Engraver - 1950 The CBC recorded radio programs on 16-inch acetate transcription discs. Made of glass, metal or even paper with a thin layer of acetate fixed to the surface, these discs were used until 1966.
Presto, a 2008 short film by Pixar; Presto, Bolivia, a town in Bolivia; Presto, Pennsylvania, an unincorporated community in the United States; Presto!, an ATM network owned by Publix Super Markets; Presto, a pseudonym of Jonathan Swift; see Chelsea Bun House; Earl "Presto" Johnson, American magician; Alice S. Presto, American suffragist and ...
Fay automatic lathe, 1921. [1] Bullard Mult-Au-Matic, a vertical, multispindle automatic lathe, 1914. [2] In metalworking and woodworking, an automatic lathe is a lathe with an automatically controlled cutting process. Automatic lathes were first developed in the 1870s and were mechanically controlled.
National Presto Industries is a company founded in 1905 in Eau Claire, Wisconsin. [2] Originally called "Northwestern Steel and Iron Works" the company changed its name to the "National Pressure Cooker Company" in 1929 and then National Presto Industries, Inc. 1953. [ 3 ]
The original corporation was founded in Bridgeport, Connecticut, and started selling its machines in 1938.It became known in the following decades for small and medium-sized vertical milling machines, with a form of quill equipped multiple-speed vertical milling head with a ram-on-turret mounting over a knee-and-column base.
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.