AMERICAN INSTITUTE. 79 



Watt and Perkins, down to the present time, to get up some 

 contrivance for the controlling of dampers l)y the pressure of 

 steam, adapted to high as well as low pressure, by which any de- 

 sired amount of steam may be carried, keeping up an even pres- 

 sure on the boiler, and consuming no more fuel than really neces- 

 sary to give the required amount of steam, shows the estimation 

 and importance of such an invention. The wonders they perform 

 in controlling the steam, saving the grate bars and furnace fronts, 

 besides the preventing of the straining of the boilers, the time 

 and trouble of watching the damper, and the safety guaranteed in 

 their use. [^ gold medal having been before awarded — a diploma 



certifying that fact. 

 JVo. 1599 — Steam Pressure Gauge. 

 American Steam Gauge Company, Boston, Mass. Is the best steam 

 pressure gauges. [^ silver medal awarded. 



Mo. 1485 — Syphon Steam Gauge. 

 Novelty Iron Works, N. Y. The syphon gauge is one of the 

 oldest, and at the same time one of the best steam gauges we have 

 in use; the glass tube is an improvement. 



[A silver medal awarded. 

 JYo. 1484 — Registers, Water Gauges, Sfc. 

 Novelty Iron Works, N. Y. A case of clocks, registers, and 

 gauges, worthy of especial notice. [^ silver medal awarded. 



JVo. Sutton^s Patent Lubricating Apparatus. 



Sutton & Gregory, 114 and 116 Cannon-street. These are lubri- 

 cating apparatus for steam cylinders and valves. 



\^A silver medal awarded. 



^^^^^^Mgu^^k ^0. 1822— Oil Sockets. 



[^awpygi)-;^ i| j jBH A. C. Garratt, Boston, Mass. Useful 



ANo oRni.. "»>^q|!P' when required. [A diploma awarded. 

 JYo. 1674 — Cap Spinning Frame. 

 Danforth, Cook, & Co., Paterson, N. J. Decidedly an improved 

 cap spimiing frame ; it runs with less power than the old frame, 

 at the same speed, with less wear and tear. The following ac- 

 count was furnished by the inventor : 



" This mode of spinning was invented by Mr. Charles Danforth 

 of Paterson, N. J., in 1828, and is now extensively used in va- 

 rious sections of the country. It will undoubtedly bear a much 

 higher speed, and make more yarn per spindle, than any other 

 spinning machine known. The ordinary velocity of the bobbins 

 being 8,000 turns per minute. But as the machines have been 



