LANGSDORF, Karl Christian.

Grundlehren der mechanischen Wissenschaften welche die Statik und Mechanik, die Hydrostatik, Aerometrie, Hydraulik und die Maschinenlehre enthalten. Mit besonderer Rücksicht auf Physiker und Praktiker.

Twelve folding engraved plates. lxviii, 755, [1] pp. Thick 8vo, cont. marbled boards (extremities worn), flat spine gilt, red vellum lettering pieces on spine. Erlangen: J.J. Palm, 1802. [bound with]:—. Theorie des Krummzapfens, eine der wichtigsten für die praktische Maschinenlehre ein bisher noch nicht aufgelösstes Problem, in aller Schärfe erwiesen und in einer sehr einfachen Formel dargestellt. 32 pp. 8vo. Erlangen: J.J. Palm, 1803. First editions and scarce. I. “The contents of this work is [sic] divided into: dynamics or the statics and mechanics of solid bodies (ten chapters), hydrostatics (three chapters), aerometry or pneumatics (six chapters), hydraulics (six chapters), and the study of machines (thirty-three chapters). The section on machines opens with fundamentals of machinery, describing the entire range of simple machines, water wheels, windmills, etc. Among the more advanced machines described are a stamping press and the steam engine of Watt and Boulton, see p. 533.”–Roberts & Trent, Bibliotheca Mechanica, p. 196. II. This work is concerned with cranks and crankshafts. Langsdorf (1757-1834), was professor of engineering at Erlangen and later became professor of mathematics at Heidelberg. Very good copies in a somewhat worn binding. Duplicate stamp of the Library of Congress on free front endpaper. Ex Bibliotheca Mechanica. ❧ Poggendorff, I, 1372.

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