102 ANNUAL OF SCIENTIFIC DISCOVERY. 



from the small room occupied by the machine in comparison with all the 

 hands he now employs for turning." 



The machine works in the most accm-ate, rapid, and beautiful manner, but 

 it would be difficult to give any clear idea of its ingenious mechanism without 

 diagrams. Scientific American. 



IMPROVEMENT IN GAS-BURNERS. 



A patent has been recently taken out in England for a gas-burner of the 

 following simple construction, designed to prevent the flickering of the light. 

 It consists of a tubular cap of thin cast-iron or other metal, having a wide 

 internal diameter, so as to fit by its open lower end upon or over an existing 

 burner. The top of the burner is in the form of a solid convex end, through 

 which a vertical slit is made to form the actual burner aperture for the gas, 

 and produces a thin, broad, flat flame. When such a tubular cap is fitted 

 upon or over an ordinary burner, the gas is received into the reservoir of the 

 tubular cap, and it thence passes slowly off through the burner slit. The 

 reservoir intervening between the common burner beneath and the burner 

 slit in the top of the cap above, acts as a pressure-regulator, to prevent flick- 

 ering and inordinate forcing of the gas, whilst the broad flame insures the 

 production of a brilliant light. Scientific American. 



