Pulsometer steam pump

Pulsometer steam pump

The Pulsometer steam pump is a pistonless pump which was patented in 1872 [cite web
title = Pumps - History Resources
publisher = ASME
url = http://www.asme.org/Communities/History/Resources/Pumps.cfm] by American Charles Henry Hall. In 1875 a British Engineer bought the patent rights of the Pulsometer [cite web
title = SPP Pumps Timeline
publisher = [http://www.spppumps.com SPP Pumps]
url = http://www.spppumps.com/history.htm] and it was introduced to the market soon thereafter. The invention was inspired by the Savery steam pump invented by Thomas Savery. Around the turn of the century, it was a popular and efficient pump for quarry pumping.

This extremely simple pump was made of cast iron, and had no pistons, rods, cylinders, cranks, or flywheels. It operated by the direct action of steam on water. The mechanism consisted of two chambers. As the steam condensed in one chamber, it acted as a suction pump, while in the other chamber, steam was introduced under pressure and so it acted as a force pump. At the end of every stroke, a ball valve consisting of a small rubber ball moved slightly, causing the two chambers to swap functions from suction-pump to force-pump and vice versa. The result was that the water was first suction pumped and then force pumped. [cite web
title = Tools and Machinery of the Granite Industry, Part II
publisher = [http://findarticles.com Find Articles]
url = http://findarticles.com/p/articles/mi_qa3983/is_200609/ai_n17193149/pg_8]

The pump ran automatically without attendance. It was praised for its "extreme simplicity of construction, operation, compact form, high efficiency, economy, durability, and adaptability". Later designs were improved upon to enhance efficiency and to make the machine more accessible for inspection and repairs, thus reducing maintenance costs. [cite web
title = The Manufacturer and Builder, January 1882
publisher = Cornell University
url = http://moa.cit.cornell.edu/cgi-bin/moa/pageviewer?frames=1&coll=moa&view=50&root=%2Fmoa%2Fmanu%2Fmanu0014%2F&tif=00076.TIF&cite=http%3A%2F%2Fcdl.library.cornell.edu%2Fcgi-bin%2Fmoa%2Fmoa-cgi%3Fnotisid%3DABS1821-0014-184]

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