520 TRANSACTIONS OF THE 



Mr. Rowley remarked upon an invention of a Russian gentle- 

 man, Mr. Ruferschuelts, of a cheap preventive and curative of 

 boiler incrustations. One gallon per day of his preventive in a 

 locomotive boiler will prevent all incrustations, and do no harm 

 to the boiler. Can be obtained at the office of the Compound 

 Solvent Company, 289 Broadway. 



The Chairman called up the regular subject, viz : 



THE STEAM FIRE ENGINE. 



Mr. Larnedj by request, resumed his explanation of the steam 

 fire engine. 



A large working model of Phillips' patent wind engine was ex- 

 hibited, and explained by Mr. W. B. Leonard, the inventor being 

 out of the city. The machine is a windmill, in general appear- 

 ance like those usually employed, but appears to be more per- 

 fectly self-regulating than any before introduced, inasmuch as the 

 provision, not only against gales of wind but sudden gusts, is 

 practically perfect. The vanes are made capable of " feathering," 

 or turning edge to the wind, and two agencies are employed for 

 this purpose : first, the vanes are hung so that when the centrifu- 

 gal force generated by their revolution is sufficient to overcome 

 a stiff spring, that force alone throws them more or less into a 

 feathering position, and, second, a perpendicular board is pre- 

 sented flatwise, in such manner that when acted on by a sudden 

 gust, it will at once yield, and commence a feathering motion by 

 means of suitable connections to all the vanes. 



Mr. Creamer said that he had tried his inventive power on this 

 subject. He liked the Larned boiler much, and considered it to 

 be a safe one. 



Mr. Lee — I am concerned with Mr. Larned in this engine. 

 The rotary pump is superior to the reciprocating one. 



Mr. Creamer — What is the cost of your engine ? 



Mr. Lee — 16,500, but we are not ready yet, and cannot state 

 what we can make them for, but probably much less than that. 



Mr. Larned — The hand-engine power is rarely great for more 

 than a few minutes at one time. When the men exert their 

 greatest strength they throw the water as far as we do. There 



