218 TRANSACTIONS OF THE AMERICAN INSTITUTE. 



The operation and working of the machine is as follows: — 

 When the dies are put in motion by means of the belt, B, the 

 eccentric, E, is also rotated, and so moves the bar, G, and frame, 

 H. The motion of this up and down, causes the cam, L, to re- 

 volve, by means, of a fixed pin, and its own inclined slot, half 

 a turn, so as to present the opposite face of the metal, R, to the 

 dies, so that all that can shall be cut into nails, and no metal 

 lost. When the handle, N, is up, this is all the motion that takes 

 place, but when it is down upon the feed screw, M, this up and 

 down motion also gives the screw a turn which feeds the plate, 

 R, just the length of one nail under the dies. The operation 

 which this feeder performs are, first, the turning of the plate 

 accurately during the raising of the die, so that no time is lost, 

 and it also feeds the plate at the same time to the dies exactly 

 the proper amount, this, of course, being regulated by the pitch 

 of the screw, and the eccentric is so placed on the shaft that the 

 plate and feeder are quite rigid during the process of cutting. 

 It is a most valuable improvement in nail machinery, and will 

 save much time and labor. 



