DESICCATION 



17 



The sides of the outer compartment d, are connected with the bottom by means of a 

 prolongation of cross bands of metal, which unite the wires and are riveted or soldered 

 to the two outer plates. The wires of the interior compartment are attached by an 

 iron hoop, to which they are riveted and soldered, and are united to the bottom plate 

 by means of a rim upon this plate ; a rim somewhat flattened upon the sides, which 

 are riveted and soldered. 



D, is a regulator suspended in the inner compartment d, and whose two branches 

 h, h, are loaded. These two branches having room to play around the bolts which 

 serve as points of attachment, and which are fixed to the upper plate, terminate in 



kneed branches whose extremities rest upon a rope g, which projects from the shaft. 

 E, is an exterior envelope secured to the frame A, A. It encloses the whole drum 

 except at top, and serves to catch the water thrown out of the goods. At y there is 

 a stop-cock for the discharge of this water, and the bottom contains besides the end of 

 a pipe by which hot air is introduced. 



The vertical shaft B receives a movement of rotation and carries with it the drum. 

 The more rapid this movement is the more does the centrifugal force tend to expel 

 the water contained in the clothes or yarn to be dried. But as this force might also 

 displace the central shaft, if the weight was not rightly distributed in the drum, and 

 cause the dislocation of the machine when the great velocity requisite for quick drying 

 is given to it, the regulator D is tested to prevent accident. The branches of this 

 regulator spread wider the more the velocity is increased, and raise consequently the 

 drum c above the conical enlargements, which permits the drum to be somewhat 

 misplaced and to rectify its position conformably to the inequalities of its load, so 

 that its centre of gravity may always coincide with its centre of rotation. The drum 

 is connected with the shaft, as is shown in z, leaving it free to take the requisite 

 adjustment. To hinder it from rising too suddenly, a spiral spring k is fixed over the 

 shaft immediately above the conical enlargement g. In order to maintain the equi- 

 librium more certainly, the apparatus is surrounded with a hollow crown F, half filled 

 with water, and if during the revolution of the machine the weight of the goods pre- 

 dominates on one side, that of the water which accumulates on the other side serves 

 the more to counterbalance it. The effect of this crown may be increased by dividing 

 it into two compartments or more. G is a large pipe by which steam or hot air is 

 introduced into the belly of the drum, which is pierced in this place with a great 

 number of small holes to receive it. 



The rotatory movement is transmitted to the drum in the following way : 



i, is a conical disc mounted upon the extremity of a shaft K. 1 which actuates the 

 cone c and the shaft B by means of friction ; L 1 is a cone fixed upon the extremity of 

 the shaft. K 2 L 2 ' is another cone of the same dimension, but whose base fronts the 

 top of the other, and which is placed on the shaft is? ' commanded by the prime mover. 

 M is the belt which embraces the two cones, and whose lateral displacement, effected 

 by means of a fork, permits the velocity of the machine to be regulated at pleasure. 

 N is the pulley which directly receives the movement. In place of a single friction 

 disc i, another may be employed, if judged necessary, and placed between the two, an 

 additional friction pole, in order better to equalise the friction. In this case the disc 

 and additional cone should turn freely upon their own shafts. We may also adopt 

 another arrangement for the bottom of the vertical shaft. The shaft immediately 



VOL. H. C 



