Reports of Judges. 63 



be necessary during the operation of sewing, swings freely from a joint 

 near the foot of the column. The needle, curved to a circle of less 

 than two inches in diameter, is operated by a geared segment. Most 

 of the movements are given by cams. The thread passes through a 

 reservoir of wax, heated by a gas jet, and the passages through which 

 the thread passes to the needle are also so heated. The shoe is lasted 

 in the usual way with small tacks driven between the two channels, 

 which are made by an auxiliary machine. The last is then mounted 

 on the jack ; the machine is put in motion by a treadle; the upper 

 and sole are pressed firmly together, while being sewed, by steel 

 fingers, which insures the tightness of the seam. The operator guides 

 the shoe while the stitching is progressing, and can instantly stop the 

 action of the needle by a movement of his foot. A pair of shoes can 

 be completely stitched in from one to two minutes, and the character 

 of the work is good. 



The difference between this machine and others for like uses con- 

 sists chiefly in the employment of a curved needle, working within a 

 very small circle. Such a needle is required to do stitching required 

 for this kind of work. Yarious other features necessary to operate 

 this kind of needle, and possessing great novelty and ingenuity, are 

 embraced in the machine. 



These changes and modifications favorably affect the economy and 

 quality of the work required in articles of almost universal use, and 

 in so marked a degree as, in the opinion of your judges, to merit the 

 highest commendation of the Institute. 



JOHN MATTHEWS. 

 EDWARD A. RAYMOND. 

 M. A. SUTHERLAND. 



THOMAS SHAW'S COMPOUND PROPELLER PUMP. 



To the Board of Managers : 



Gentlemen. — After a full and impartial examination of the above 

 named pump, the undersigned judges make report that this pump is 

 designed for elevating fluids, and is capable of adaptation to every 

 form of raising or forcing water ; the extent of the work done, that 

 is, weight of fluid elevated and height at which delivered, being only 

 a question of strength of material and power applied to accomplish 

 the work. 



The construction of this pump is as follows: In the center of a ver- 



