Rock Products

MAR 2013

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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SCREENING SIZING that today spans more than 360,000 sq. ft. and four plant locations in Fort Wayne. By 1913, the company had already ex��� panded internationally with representa��� tion in London. However, that office was closed in 1914 as World War I swept across Europe. Deister���s London sales manager was or��� dered to sell or store the office furniture and return home. His Atlantic Ocean crossing was made most uncomfortable by the fact that just days before, a Ger��� man cruiser sank two British ships and chased a passenger boat en route to Eng��� land. In addition to the London office, the company maintained a New York City office until the mid���1950s to handle all exports of the concentrating tables. Until World War II, Deister Concentrator Co. and Deister Machine Co. operated as competitors. However, in 1926, upon the request of its customers, Deister Ma��� chine Co. began manufacturing vibrating screens for the separation of materials according to particle size. In 1933, Deister introduced a special screen for sizing aggregate materials used in hot���mix asphalt plants. Subse��� quently, the company added vibrating feeders and foundry equipment, includ��� ing shakeouts, compaction tables, re��� claimers and oscillating conveyors. Products varied in the 1930s and 1940s to meet the economics and sociology of the times with water softeners being produced during the Great Depression. Battery test stands meeting U.S. military standards were manufactured during World War II. Today, Deister Machine Co. focuses en��� tirely on its core business, providing feeding, scalping and screening equip��� ment to the aggregate, mining, and recy��� cle industries. Deister equipment is used in all 50 states, Canada, and in many countries throughout Latin America, Europe and Asia. According to its engi��� neers, Deister equipment is designed to integrate with all components of the production system, while delivering maximum performance and productivity. In fact, some of the earlier models of Circa 1925. Deister���s first Type 50-Open PLAT-O Vibrating Screen. Circa 1933. An asphalt production site with a totally enclosed asphalt plant screen. In the 1930s, workers pose on a double-deck 4- x 12-ft. vibrating screen. A 1930s sand and gravel plant. ROCKproducts ��� MARCH 2013 51

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