200 CATALOGUE. — PHILOSOPHY AND ARTS, PRACTICAL MECHANICS. 



Arkwrighi's machine for raising ore. S. A. 

 XIX. 278. Nich. 8. I. 303. Repert. ii. I. 

 261. 



Buckets connected by frames. 



Raising and lowering boats. Fulton on ca- 

 nals. 



Whidbey on the recovery of the Ambuscade. 

 Ph.tr. 1803.321. 



Machine for raising floating wood out of the 

 water. Person Recueil. PI. 11. 



Ponti's stone gatherer. Repert. IV. 137. 

 Willich Dom. Enc. Art. Stones. 



Saint Victor's machine for rooting up trees. 

 Nich. 8. IV. 243. 



Antis's register for the draughts from a mine. 

 S. A. XXI. 380. Nich. IX. 114. 



Lowering Weights. 



Most machines for raising weights are also employed for 

 lowering them ; some are appropriated to this purpose only. 

 See regulation of descent. 



Removing Weights. 



Friction. 



Diminishing 



Lahire on lessening friction. A. P. IX. 119. 

 Hermand's mode of diminishing friction. 



Mach. A. III. 7. 

 Mondran's machine for diminishing friction. 



A. P. 1725. H. 102. Mach. A. IV. 1 19- 

 Fitzgerald on friction wheels. Ph. tr. 1763. 



139. 



By means of friction quadrants a Steam engine was ena- 

 bled to do the work of 6 hours in 5, the friction of its beams 

 being reduced from 95 pounds to ;J of a pound, and from 

 425 pounds to 2-^i)ounds. 



Removing AVeiglits without Wheel 



Can"iages. 



Duncombe's patent sedan chairs. 1634. 

 Blondel's mode of raising marshes. A. P. I. 



Perrault's machine for drawing weights. 



Mach. A. I. 31. 

 Machine for drawing weights. Mach. A. I. 



129. 

 Willin's sedan chair. Mach. A. II. 137. 

 Hermand's dray on connected rollers. 1713. 



H. 76. Mach. A. III. 7. 



Such a carriage was lately made in London. 



Alix's machine for drawing weights. Mach. 



A.m. 193. 



Sebastien's machine for moving trees. Mach. 



A. IV. 107.' 

 Coetnisan's machine for moving trees. Mach. 



A. IV. 109. 

 Rollers. Leup. Th. Machinarium. t. 8. 9- 

 Buckets hung on a rope for moving earth. 



Leup. Th. Hydrot. t. 20. 

 Fenel on the alternate tensions of cords 



drawing a load. A. P. 1741. H. 155. 

 PuUies. Emers. mech. f. 239. 

 CarburiTnxvaux pour transporter un rocher. 



8. Paris, 1777. R. I. 

 Riding. E. M. Equitation. 1 vol. 

 Monge on the best mode of moving a given 



quantity of matter into a given situation, 



deblais et remblais, Fr. A. P. 1781. 666. 



H. 34. 

 Screws for removing flour. EUicott's corn 



mill. Repert. IV. 319. 

 Coulomb on carrying weights. See sources 



of motion. 



Coulomb observes, that the surface of drays ought to be 

 made convex, in order that they may be more shaken, and 

 that the friction maybe diminished. See Friction. 



Removing goods in fires. Person's parafeu. 

 Recueil. PI. 12 . . 15. 



Heavy blocks may be removed on rollers mounted upon 

 wheels, so as to avoid the friction on the axles. But this is 

 not great. 



In Holland, when wooden drays are employed, it is usual 

 to carry water for moistening them, in order to prevent their 

 taking fire. 



