182 CATALOGUE. — PHILOSOPHY AND ARTS, PRACTICAL MECHANICS. 



Lambie's patent for applying force to ma- 

 chinery. Repert. XI. 37 !• 



A man standing on a moveable foot board. 



Person's mill worked by a lever. Recueil. pi. 



3 . . 5. 

 Walker's familiar philosophy. Lect. 3. 



Mills are sometimes driven in military service by the 

 wheels of waggons. Fig. 



R. 15. on a barometrical perpetual motion. 

 Nich.IX.212. 



For the forces of wind and water, see hy- 

 draulic machines. 



Economy of Motion. 



Hooke's centrifugal regulator. Hooke. Lect. 



Cutl. Lampas. p. 43. 

 On fly wheels. Leup. Th. M. G. t. 22. 23. 

 Emerson's mechanics. Pr. 113. 

 On fly wheels. Langsd. Hydr. c. 35. 

 Burgess's patent rotatory motion by a catch 



and fly. Repert. V. 11. 

 Fly wlieels. Imison's elements. I. 65. 

 fProny's condenser of force. B. Soc. Phil. 



n. 85. Nich. IX. 275. 



Nicholson justly observes, that wherever a weight is 

 wound up there is a loss of force. 



Springs- 

 Emerson's mech. 177. 



Springs are weakened by use, but recover their strength 

 if they are laid by. 



Hopkinson's spring block. Am. tr. III. 331. 



Repert. I. 44. 



To prevent the heeling of the ship, which might be caused 

 by too sudden an impulse. 



On springs. Ph. M. II. 67. 



Metal springs, if allowed to vibrate freely, soon break or 

 change their form, and take a set : wooden springs are 

 more liable to break if stopped and not suffered to vibrate. 

 Red deal is the fittest wood for springs. 



Springs roust be thin in order to be flexible ; and rautt 



derive their strength either from their breadth, or from the 

 addition of different plates. 



Jointed Work. 



Hook's universal joint. Lect. Cutl. Heli- 

 oscopes, p. 14. Birch. IV. 2l6. 

 Martenot's endless chain. Mach. A. II. 115. 

 Loriot's endless chain. A. P. 1761. H. l6l. 

 K'astner on suspended systems of rods. N.C. 



Gott. 1770. II. 132. 

 Chains. E. M. A. I. Art. Chainetier. 

 Vaucanson's chain. E. M. PI. VIII. Tirage 



des soies. 

 Giraud on the best forms of chains and cords. 



Roz. XXXV. 42. 

 Jointed levers and frame work. LangsdorfFs 



hydr. PI. 33. 40. 

 Hancock's chain. S. A. XIV. 313. Repert. 



VL 241. 

 Fussell's patent chain for lessening friction. 



Repert. XII. 303. 

 King's patent joint. Repert. XIII. 297. 



Production and Rectification of 

 Rotatory Motion. 



Lahire on winches and cranks. A. P. IX. 99. 

 164. 



Auger's machine for producing perpendicular 

 motion by a jack. A. P. 1721. H. 97. 



Leup. Th. M. G. t. 13, 21 . . 27, 71. Th. 

 Hydr. ii. t. 26, 27. 



Belidor. Arch. Hydr. I. i. 36. 



Garousse's lever. Mach. A. H. 15. 17. Beli- 

 dor. Arch. Hydr. I. i. 122. • 

 A lever with a double catch to mm wheels. 



Ellipses instead of cranks. Belidor. Arch. 

 Hydr. II. i. PI. n. 13, 14. 



Cranks. Emerson's mechanics, f. 238. Un- 

 dulating rollers. F. 247. 

 1 



