446 Mr. H. Tuition's Patent Distilling Apparatus. [JuftE, 



heat is about 80° less than the common boiling point of 212°; 

 and of course, from the regular application of so low a degree of 

 heat, a still better flavour is secured to the distilled product. To 

 effect distillation at so low a temperature, the pressure of the 

 atmosphere is removed from the surface of the liquid in the still 

 by an air-pump, E, attached to the top of a close receiver, C, 

 which being worked exhausts the still, A, the close condensing 

 vessel, B, and the receiver, C. From the great reduction in the 

 application of the heat, an important saving of fuel is effected ; 

 and the vessels, being less exposed to the action of violent heat, 

 will be far more durable. A. less quantity of cold water for con- 

 densing the vapour in the condensing vessel and receiver is 

 required than in the common distillation, which, in many cases, 

 will be found a material convenience, particularly in some of 

 our West India islands. In the pipe by which the close condens- 

 ing vessel, B, and the receiver, C, are connected, there is a stop- 

 cock, G, by which that communication may be closed. By this 

 means the contents of the receiver may at any time be drawn 

 off without impeding the operation ; for while the stop-cock, G, 

 is turned off, the close condensing vessel acts as the receiver. 

 The receiver is of course to be re-exhausted, if it has been opened 

 while the still is at work, before the cock, G, is again turned on. 

 D, is an air-cock to admit air into the receiver previous to draw- 

 ing off" its contents. H, is the discharge cock of the receiver. 

 I, the discharge cock of the still. 



From the distillation being confined throughout the operation 

 to close vessels, the common loss by evaporation at the worm's 

 end is in this apparatus avoided, and an increase of produce is 

 obtained. The produce of the improved apparatus has been 

 repeatedly submitted to the judgment of experienced persons, 

 and has been most highly approved by all. The apparatus 

 itself may be seen at work at the manufactory, No. 63, White- 

 chapel, London. 



The subjoined testimonials are, the one from Joseph Benwell, 

 Esq. a gentleman of long experience and of great practical skill 

 in the English malt distillery ; and the other from Mr. W. Allen, 

 F.R.S. Sec. well known as an excellent chemist. 



DEAR SIR, i/en/ey, Oct. 9, 1817. 



Having attended repeated trials made with your apparatus for 

 producing a vacuum and distilling by the combination of the 

 balneum with the air-pump ; and having considered the principle 

 thereof, I feel much satisfaction in communicating my full con- 

 viction that it is a mode by which a purer spirit will be extracted 

 than by any other that has been hitherto practised, that a 

 considerably less proportion of fuel will be requisite, and that the 

 operation may be performed with equal facility. 



I remain, dear Sir, yours very sincerely, 



To Henry Tritton, Esq. J S E P H Be N W ELL . 



