262 



CATALOGUE. — PNEUMATIC MACHINES. 



Howard on a fulminating mercury. Ph. tr. 



1800. 204. 

 On increasing the effects of powder. Journ. 



Phys. Repert. VII. 135. 



By leaving a vacant space behind the wadding. Thus a 

 bomb if but partly filled breaks into a larger number of 

 pieces ; but they are not scattered so far as when it is quite 

 filled. 



Regnier's powder proof. Nich. III. 198. Ph. 

 M. IV. 394. Gilb. IV. 400. 



With a spring. 



fVandelli on the force of gunpowder. Rep. 



X. 286. 

 Griffith on mixing lime with gunpowder. 



Repert. XII. 341. 

 Coleman on gunpowder. Ph. M. IX. 355. 

 Jessop on blasting rocks. Nich. IX. 230. 

 Farey on blasting rocks. Ph. M. XX. 208. 



The best charge of powder is about i or i of the weight of 

 the ball, for battering |. A 24 pounder with 16 pounds of 

 gunpowder at an elevation of 45° ranges 20 S50 feet, about 

 I of the range that would take place in a vacuum. The 

 resistance is at first 400 pounds or more, and reduces the 

 velocity in a second from 2000 to laoo feet in the first ISOO 

 feet. Cavallo, from Robins. 



It has been found, that the velocity of a ball is not mate- 

 rially affccted by increasing the weight or firmness of a 

 piece of ordnance, beyond'very moderate limits. 



Particular Constructions of Cum and their 

 Parts. 



Chaumette's horse pistols. Mach. A. I. 201. 



Jointed carbine. A. P. 1715. H. 66. Mach. 



A. II. 27. Guns loaded at the breech. A. 



P. 1715. H. 66. Mach. A. II. 79, 99, 101. 



III. 53. Jointed powder horn. Mach. A. 



III. 49. Powder horn with balls. Mach, 



A. III. 51. Appendages to locks. Mach. 



A.m. 59. 

 Bedaut's machine for red hot balls. Mach. 



A. II. 61. 

 fDestau's roUing battery of muskets. Mach. 



A. II. 75. 



Villon's machines for making gunbarrels and 



cannons. A. P. 17 16. H. 77. Mach. A. III. 



71,73,77,79. 

 Machine for boring cannons. Mach. A. III. 



81. 

 Deschamps's improvements of guns. A. P. 



1718. H. 74. Mach. A. III. 171, 177, 181, 



183. 

 Rifle muskets and cannons. 



Leutmann on rifle barrels. C. Petr. HI. 156. 

 D'Arcy's light cannons. A. P. 1733. H. 70. 

 Raucourt's inventions for throwing bombs. 



Mach. A. VI. 157. 

 Lacq on the mechanism of artillery. A. P. 



1740. H. 108. 

 Ladoyreau on cannons of wrought iron. A. 



P. 1742. H. 141. 

 Reinier's double barrelled gun. A. P. 174S. 



155. 

 Fusil tournant a deux coups. 



Pasde Loup's machine for charging artillery.. 



A. P. 1742. H. 157. 

 Maty's gunpowder air gun. Condamine. A. 

 P. 1757. 405. Ingenhousz. Ph. tr. 1779. 

 Shot a bullet So paces with the air of 2 ounces, Which 

 served 1 8 times. 



Montalembert on priming cannons. A. P. 



1759.358. H. 227. 



Challier's gun lock. A. P. 1762. H. 192. 



Descourtieux's gun barrels. A. P. 1765. H. 



133. 

 Boullet's gun acting by the circular motion 



of the barrel, A. P. 1767.H. 186. 

 Delaunay's gun easily primed. A. P. 1771. 



H. 68. 

 E. M. A. I. Art. Arquebusier. Canons. 

 Watts's patent for making small shot. Rep. 



HI. 313. 

 On shot. Nich. I. 260, 380. 

 Aitken's patent for loading fire arms. Rep. 



VI. 239. 



