The Architectural magazine . to prevent the loss of heat as much as pos-sible, the calorifere, and all those parts of the tubes placed onthe exterior of the stove, are enveloped in lists of woollen cloth. M. Bonnemain, having thus ap-plied the principles of heatingwith so much skill, was alwaysenabled to maintain in his stovesan equal temperature, scarcelyvarying so much as half a degreeof Reaumuis thermometer ; but,as it was not sufficient to havethus far solved the problem, hecontrived that this degree of tem-perature, in all parts of the stove,should be constantly maintainedat that point wh
The Architectural magazine . to prevent the loss of heat as much as pos-sible, the calorifere, and all those parts of the tubes placed onthe exterior of the stove, are enveloped in lists of woollen cloth. M. Bonnemain, having thus ap-plied the principles of heatingwith so much skill, was alwaysenabled to maintain in his stovesan equal temperature, scarcelyvarying so much as half a degreeof Reaumuis thermometer ; but,as it was not sufficient to havethus far solved the problem, hecontrived that this degree of tem-perature, in all parts of the stove,should be constantly maintainedat that point which was foundmost favourable for promotingincubation. It was by means ofthe following apparatus, or regulator of the fire, that he attainedthis desirable object. The action of this regulator is founded on the unequal dilatationof different metals by heat. A rod of iron {x^fg. 192.) screwed, asabove mentioned, at its lower extremity, is united to a femalescrew of brass (^), which is enclosed within a tube of lead termi- hif the Circulation of Hot Water. 365 SV* I /; nating at its upper end in a ring of brass (2;). Theleaden tube is plunged into the water contained inthe calorifere, by the side of one of the tubes (g).The dilatation of lead being greater than that ofiron, at an equal degree of temperature, and therod being also enclosed within the tube, it is heatedmuch less than the tube; and, when the temper-ature is raised to the degree required, the length-ening of the tube brings the ring (z) into contactwith the claw (a) at the shorter end of the bent lever{abd); butwhenthe slightest increase of heat againlengthens the tube, the ring {z) raises the claw ofthe lever, but, by reason of the greater length of its oppositearm (c/) that end descends much more. This movement iscommunicated near to the axis of a balanced lever (f), placedbelow the end of the former one, and thereby greatly increasesthe motion of the lever e\ which movement is forthwith trans-mitted by th
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Keywords: ., bookcentury1800, bookdecad, booksubjectarchitecture, bookyear1834
