Reports of Judges. 97 



points of excellence which go to make a good reliable pump. In 

 construction it is simple, also easily taken apart for examination 

 and repairs, one piece of leather forming all the valves. The 

 secondary foot valve is an important feature, giving great steadi- 

 ness of holding the water when lifting from great depths. In the 

 well or farm pump we would call attention to the arrangement by 

 which the water of its own gravity settles back to the barrel, and 

 to the air chamber surrounding the barrel to protect it from cold, 

 so that the pump is never, in the coldest weather, disabled by 

 frost, a very important consideration in the Northern States. 



Taking all into consideration, the committee are of opinion that 

 it is the best pump of its kind, and which they find is sustained by 

 the testimony of parties who have used them. They would there- 

 fore, recommend a first premium. 



ISAAC V. HOLMES, ) 



WM. 0. SELDEN, I Judges. 



CHAS. E. EMERY, ) 



THIRD GROUP. 



To the Board of Managers: 



Gentlemen — The undersigned, judges in Department V, Group 

 3, report that they have carefully examined the several articles 

 referred to them. Taken collectively, these specimens of skill and 

 ingenuity furnish evidence of continued advance and improve- 

 ment in the methods used to accomplish a desired end. In decidiug^ 

 upon the comparative value of the machines entered for competi- 

 tion, great scrutinj'- has been exercised, in order to weigh impar- 

 tially the evidences of utility found in each. The following is the 

 result of the deliberations of the judges; articles of the same class 

 are given in their relative order of merit, together with a brief 

 summary of such points- of excellence in each as are deemed 

 worthy of special notice. 



No. 123. Taper Lathe. (Pratt, Whitney & Co.) Its merits are 

 simplicity, positive action, power of accurate adjustment of the 

 taper attachment, and method of constructing the tool post, so 

 that it can easily be raised or lowered, and still be firm under the 

 action of the tool. The taper attachment is most especially meri- 

 torious. The lathe also, considered without this, is a first class 

 machine in every respect. We therefore respectfully recommend it 

 to honors of the first class. 



[Inst.] 7 



