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thus cause a peculiar motion to the traversing bar, (C,) 

 which it will cause to move slowly at the extremities of 

 its course and rapidly in the centre, thus giving time for 

 the threads to take hold of the rails of the reel on the 

 outside of the skein before it begins to move back. C, 

 the traversing bar, with the brass hooks through which 

 the silk passes. D, a bar of the frame on which a brass 

 plate is fixed, with small holes, for the silk to pass through, 

 and which stands immediately over the vessel containing 

 the cocoons. E, the drum, eighteen inches diameter. 

 F, the pulley, ten inches diameter. The size of the drum 

 and pulley precludes the possibility of the band slipping. 



The whole frame is five feet long, four high, and two 

 wide in the clear, and the timber about two inches square. 

 It is put together with keys, for the convenience of tak- 

 ing down and putting up. 



The necessity of the machinery for producing the vi- 

 bratory motion of the traversing bar, will be understood 

 when it is stated, that, if the threads are laid on the rails 

 as cotton is reeled they would adhere and become use- 

 less, as they could not be separated. The traversing 

 bar causes them to be laid on in such a manner as to ob- 

 viate this entirely. By a small handle near the rim of 

 the drum, the reel is turned. With this reel the relative 

 proportionate diameter of the drum and pulley is neces- 

 sary, to produce the proportionate movement of the 

 traversing bar, and the revolution of the reel, as the bar 

 must move back and forth five times, while the reel 

 makes nine revolutions, and as the groove is formed, 

 one revolution of the cylinder causes the bar to move 

 out and back once. This reel I have not seen, but give 

 the description of it as published. 

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