Refofts of Judges. (31 



part of this tube is a nut having spiral threads within it ; this nut is 

 pierced with holes, and when the double bunch of bristles reaches the 

 nut, a wire, moved by automatic feed from a reel, is thrust through 

 the nut and fold in the bristles, and then cut off to the recpiired length. 

 The plunger tube, nut and inclosed bristles now descend to the 

 stock or block previously pierced with holes, to receive the bunches. 

 The block is sustained by an adjustable plate and is brought to its 

 proper position by a finder or guide. As soon as the nut reaches the 

 block, the plunger turns and twists the cone around the bunch into 

 the spiral grooves which screw the bunch of bristles through the nut 

 into the holes in the stock. These movements are effected so 

 rapidly that sixty bunches can be inserted in one minute ; the move- 

 ments are entirely automatic. The difference between this invention 

 and the usual methods of making brushes, consists in the novel means 

 by which the bristles are inserted and secured in the block. This 

 consists in forming a double threaded screw of wire, which incloses 

 the bunch and passes through the fold in the bristles ; and also in the 

 machine by which the wire is thus formed and by which the bunches 

 are inserted. 



These changes and modifications create a new system of making 

 brushes ; and affect the quality of the brushes thus made, the economy 

 of labor, materials and the rapidity of manufacture so favorably, as to 

 entitle the invention to the highest commendation of the Institute. 



JOHN MATTHEWS. 

 EDWARD A. RAYMOND. 

 M. A. SUTHERLAND. 



H. AND J. L. YOUNG'S DIAMOND GANG SAW. 



To the Board of Managers : 



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

 named machine, the undersigned judges report that the exceedingly 

 useful, ingenious and novel system of sawing or dividing stone into 

 slabs, as embodied in the construction and mode of operation of this 

 machine, is believed to be the first practical application of the diamond 

 to this purpose; such work being now done by plates of iron having 

 a reciprocating motion, and supplied with sand and water. The 

 machine consists essentially of a massive framework of timber, to 

 sustain the working parts, and having a sash or framework, for sus- 

 taining the saw blades, which rests upon slides slightly inclined, and 



