Perpetuum Mobile PDF Download

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1870 edition. Excerpt: ... PERPETUUM MOBILE; OR, SEAECH FOR SELF-MOTIVE POWER. CHAPTER I. EARLY OPINIONS RESPECTING THE POSSIBILITY OF, AND PROJECTS FOR OBTAINING, PERPETUAL MOTION. The most ancient recorded scheme for effecting a mechanical perpetual motion that we have been able to trace, belongs to the thirteenth century. Its inventor was Wilars De HoneCort, an architect, whose original Sketch Book, in which his design appears, as reproduced in the annexed engraving, is deposited in the iScole des Chartes at Paris. In 1849 M. Quicherat published a commentary, as did also M. Lassus in 1858, on that remarkably interesting art relic. Translations of these, with additions of his own, appeared in 1859, by Professor Willis, of Cambridge, to whose valuable work we are indebted for the following particulars on the subject under review. At page 35, appears Plate VIII., Eectof of the Fifth Leaf, marked in the thirteenth century with the letter 1, and in the fifteenth with the letter e. "' Maint ior se sunt maistre dispute de faire torner une ruee Facsimile of the Sketch-Book of Wilars de Honeeort, an architect of the thirteenth century; with Commentaries and Descriptions by M. J. B. A. Lassus, late architect of Notre-Dame, and of the Sainte Chapelle at Paris, &c.; and by M. J. Quicherat, Professor of Archaeology at the Ecole des Chartes at Paris. Translated and edited by the Rey. Robert Willis, MA., F.R.S., &c. 4to. 1859. f Recto and verso are terms employed to distinguish the drawings in the Sketch-Book, from their being made on both sides of the leaf. par li seule. Ves ent ci con en puet faire par mailles non pers ou par vif argent.'" "Maint jour, se sont maitres disputes pour faire tourner une roue par elle seule. Voici comment on peut le faire par maillet non pairs...