The first truly successful steam engine to drive a pump to remove water from mines. In 1705 Thomas Newcomen invented the first steam engine, which needed valves that were capable of containing and regulating steam at high pressures. As inventors such as James Watt designed new machines, these were improving the design of the valves. But it took many years for the production of valves to be on a large scale, and independently to particular projects. His ability to sell the engine was hampered by Savery's broad patent. He was forced to establish a firm with Savery, despite the improved performance of his engine, the significant mechanical differences, the elimination of the need for steam pressure, and the use of vacuum in a very different manner. A schematic of a Newcomen engine is shown in Figure 1. The engine is called an "atmospheric" engine because the greatest steam pressure used is near atmospheric pressure. Check out our PRESSURE VALVES production program at:

La primera verdaderamente exitosa máquina de vapor con una bomba hidráulica destinada a la eliminación de aguas de las minas. En 1705, Thomas Newcomen inventó la primera máquina de vapor, que necesitaba válvulas capaces de contener y regular el vapor a altas presiones. En aquella época inventores como James Watt diseñaron nuevas máquinas y éstas mejoraron el diseño de las válvulas significativamente. Pero tuvieron que pasar muchos años para que la producción de las válvulas fuera a gran escala e introducida en proyectos particulares. En la Figura 1 se muestra un esquema de un motor Newcomen. El motor se denomina motor "atmosférico" porque la mayor presión de vapor utilizada está cerca de la presión atmosférica.

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