The life, times, and scientific labours of the second Marquis of Worcester : to which is added a reprint of his Century of inventions, 1663, with a commentary thereon . at means to lofeno time in motion or I faw in the Arcenal at Venice? so—for as. * of it. ® at Venice in the arsenal. \A to and fro Lever.] William Bourne offers thefollowing as his 112th Device, touching the makingof engines to thrust from or pull to you with greatforce or strength. He says, And furthermore, youmay make an engine to thrust from you or to pull untoyou, to lift vp or to presse downe with great force
The life, times, and scientific labours of the second Marquis of Worcester : to which is added a reprint of his Century of inventions, 1663, with a commentary thereon . at means to lofeno time in motion or I faw in the Arcenal at Venice? so—for as. * of it. ® at Venice in the arsenal. \A to and fro Lever.] William Bourne offers thefollowing as his 112th Device, touching the makingof engines to thrust from or pull to you with greatforce or strength. He says, And furthermore, youmay make an engine to thrust from you or to pull untoyou, to lift vp or to presse downe with great force,eytlier to goe with wheeles as before is declared, orelse to goe with skrewes or to goe with both, as tothrust open huge and stiong gates, or else you takinggood hold, to pull them open vnto you wards, and will 426 THE CENTURY, make but little noyse in the doyng thereof, but youmust be sure to set the engine fast, if to tlirust from, tobe strongly and well backed, and to pull to them itmust be strongly bolstered before, sufficient to be offorce to scrue the tume. The Venetian arrangement may be described, asshown in the annexed engraving, where A, B, C, is a. frame, the two upright sides of which D E, are pro-vided with a series of clicks, appearing in the drawinglike the serrated edge of a saw, and each is so placedsecured by a pin on which it moves, as always to in-cline to fall outwards. F, F, is a long lever, having astout short cross bar in the centre, and is representedon the pomt of taking up on a click at«, while it leavesone on the opposite J, such being the to and fromotion required, thereby losing no time in motion orstrength. WITH NOTES. •i2^ A way to remove to and fro hugeweights with a moft inconfiderableftrength from place to place. Forexample, Ten Tunne with tenpounds, and lefs ; the faid ten poundsnot to fall lower then it makes theten Tunne to advance or retreatupon a Level. \_A most easie level Drcmglit\ The weight is in thiscase to be moved with a mos
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectinventions, bookyear1
