No. 129.] 99 



framing. The stud, 18, is connected by a rod, 21, to a stud, 22, 

 which is secured, but adjustable in the lever, 0, on the sector 

 shaft, N. In the slot in the cam, M, there are a number of un- 

 dulations or steps, the number being one more than the number 

 of cards on the machine or machines, and the said undulations 

 or steps being of suitable form to give the required motion through. 

 the stud, 18, rod, 21, stud, 22, lever, 0, and sectors, M M and L 

 L, to the sweeps, to turn over or open, strip, and close every card 

 in succession — to perform which there is one undulation or step, 

 30, for every card, and afterwards to return the sweep ready 

 again for commencing operation, to perform which there is one 

 greater undulation or step, 31 ; the latter undulation or step is 

 shown by dotted lines, as are also all parts of the slot that are 

 concealed. The cam, M, receives a part of a revolution every 

 time one of the studs, 7, on the wheel, Y, comes into operation on 

 the stud, 8, of the lever, 9, and causes the stud, 6, to move back- 

 ward, as every time the stud, 6, is forced forward, it is brought, 

 by the revolution of the shaft, U, into one of the openings, 17, of 

 the disc, and caused to give part of a revolution to the disc. In 

 order to hold the cam steady at those times when it is not in 

 motion, a paul, 23, is hung on a pin, 24, in a standard, 25, below 

 the disc, and a lever, 26, is attached to the paul, and connects 

 by a spring, 27, to the frame ; the spring acting on the lever holds 

 the paul up, and causes it to catch in one of the slot openings, 

 until the stud, 6, is coming into operation on the disc; the said 

 stud, 6, previous to entering an opening, comes into contact with 

 the lever, 26, and throwing it forward, releases the paul, and 

 holds it clear of the disc, until it is itself leaving the disc, when 

 the spring, 27, is allowed to operate. 



The several parts having been described, and their duties ex- 

 plained, we will proceed to explain the manner in which their 

 operation is conducted. 



