Description of a New Sand-Bath. 



55 



from this cock seen at z/, fig. 1, rises to within an inch or Iwo of 

 the top of the condenser, so that the warm water is 6\n\vu off 

 first. By this arrangement the very great convenience is ohtain- 

 ed of a constant supply of hot water^ delivered into the sink for 



washing. 



% 



and 3 



As the well water at New Haven contains a considerable amcnnt 

 of sohd matter, which sogn encrnsts the interior of vessels \n 

 which it is steadily' boiled, raitj water only is nsed in the water- 

 hath. 'I'he snpply is kept up through the pipe 2r, as shown in 

 figs. 1, 2 and 3, rinming under the floor. Its whole course may 

 be traced by these three figures. ' It rises into the box A, figs. 1, 



, in which the water srands on a level with the upper part 

 of the glass gnage tube, sho^j^ at / in fig. 3. '' Upon the surface 

 floats a large hollow copper ball, B, fig. 1. As soon as the for- 

 niation of steam and its coiiseqiient passing off ir]to the condenser 

 commences iri the water bath, the surface of coarse lowers, and 

 a corresponding lowering occurs in the box A,- The copper ball^ 

 B, sinks with the water, and gradually opens a valve at C, fig. 1. 

 I his admits a stream of water from an elevated cistern, which 

 nows in just fast enough to supj51y that which passes off from 

 the water bath as steam. 



This arrangement is only novel in its present application, being 



i believe quite common in some of our cities for regulating the 



flow of water into cisterns. It works admirably in the present 

 case 



off. 



J and seldom if ever requires any attention. If the fire is 

 very hot, so much steam is occasionally generated, that it is not 

 condensed with sufficient rapidity; a partial flow of hot water 

 oack into the box A, has several times occurred under these cir- 

 cumstances, but has never been sufficient to overflow. This dif- 

 ficulty might be avoided by enlarging the conducting pipe m^ and 

 V^^^^ i>j or by reducing the size of the water-back e, e, fig, 1. 

 I he space D, fig. 1^ is a large dry hot oven, where quite a high 

 neat is obtained. This is also shown at D, the door being taken 



In this oven a shelf is placed, perforated with holes for the 

 insertion of funnels, tubes, &c. It is in constant use for dryings 

 and is found to be of very great service in all cases where rapid 

 ^ying is desirable, and a precise temperature is not required* 



I he small door at E, fx^. 3, is another means of access to this 

 oven. ° ' 



The water-bath is set in the brick work, but may be taken out 

 ^nd reset without disturbing the rest of the apparatus, in fact 

 ^very part is accessible. The couplings to the pipes/,/ may be 

 ffcf^o ?,_ ^^^^"gh the door F ; those to the supply pipe z, at G, 



m, by taking out a brick at H, 



.,dy access to the interioij^f the fur- 



ace pot a, there is a large moveable circular plate immediately 

 ovej itg circumference is shown by the dotted line at I, I, in 



>' ^, those to the escape pipe, 

 f g- "5. In order to obtain read) 



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