Copy 1
Fires improv'd: being a new method of building chimneys, so as to prevent their smoaking: in which a small fire, shall warm a room better than a much larger made the common way. With the manner of altering such chimneys as are already built, so that they shall perform the same effects... / Written in French, by Monsieur Gauger: Made English and improved by J.T. Desaguliers... By whom is added, the manner of making coal-fires... The whole being suited to the capacity of the meanest workman.
- Gauger, Nicolas, approximately 1680-1730
- Date:
- 1715
Licence: Public Domain Mark
Credit: Fires improv'd: being a new method of building chimneys, so as to prevent their smoaking: in which a small fire, shall warm a room better than a much larger made the common way. With the manner of altering such chimneys as are already built, so that they shall perform the same effects... / Written in French, by Monsieur Gauger: Made English and improved by J.T. Desaguliers... By whom is added, the manner of making coal-fires... The whole being suited to the capacity of the meanest workman. Source: Wellcome Collection.
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![in what proportion you let them mix as they come into the Room = = = [ Fig. 14, 15.7 If you left full only the fpace cb of the little Cylinder equal to 4 m ‘or sp, you might fucceflively fhut up the three Holes of the great Cylinder, or leave them all three open, or leave only as much of pd open as you have of am fhut. _ ; C Fig. 16.7 Youmighteven take off part of thofe two:Cylinders, and leave only pd nm, of the great one, and cb of the little one, as you fee in the 16¢h figure ; then you will not have occafion for fo much room for this Ma- chine, which is as exact, and much fimpler than the other. | [ Fig. 17. 18.7] Joyn atright Angles, or fquare to one another, two little Frames: . pd,nm; the breadth of each of the Holes; pd,nm muft be of five Inches; and the: height which is reprefented in fig. 18. of 8! Inches; within the right Angle, at the An-: gular Point fix a Shutter cb, which may ak. ternately fhut the Frames, which muit be: fo placd, that one of the Holes may anfwer to the paflage of the Air from the Cavities,, and the other to the place where the Exter-. nal Air comesinimmediately, as may be feeni in the 20th. figure; inftead of a Hinge you: muft havean Axis for the Shutter to play; upon, with a Hand fixd to this Axis, by | whicm](https://iiif.wellcomecollection.org/image/b33016185_0001_0130.jp2/full/800%2C/0/default.jpg)
