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ALS ("J. Ericsson"). No place, 22. III. 1859 - Ericsson, John, American engineer - 1859. 
1859. 4to. 1 p. To a gentleman: "My Dear Sir: The anticipated breaking of frank's main leer, through the runner, has come and came, as unfortunately must, in every engine doing any thing like maximum work. I am induced to ask what action Msrs. Clute have taken in the matter. You remember my letter of the 13th March, which I sent to you and in which I urged it as an imperative necessity for Msrs. Clute to put wrought levers on the cast rack shafts in every engine cast in the manner complained of? I hope Mrs. Clute, in the face of my letter, has not sent down a new batch of engines without doing what they expressed themselves willing to do. Should the matter have been neglected, then order them at once to send your wrought iron main levers as fast as they can make them and let Banks turn the rack and put the levers online." - In a lengthy postscript, he continues: "Frank's engine is being pushed at Delmatins (?) with all possible speed but quadruple work has been done to which was expected. The engine appears to have been kept at white heat for hours as the vessel in the supply picture was completely burnt out." - The Swedish-born engineer Ericsson made numerous changes to the steam engine. By 1859, Ericsson was working on war ships, and by 1862 he designed and built his famous ship, "The Monitor", inaugurating a new era in warfare by creating vessels capable of launching torpedoes. A superb, scientific letter.
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