MACHINE FOR CLEANIlfG ClflMWEYS. t75 



have their chimneys swept with as much cleanliness, and as 

 effectually with machines, as they have heretofore had them 

 done; and I am convinced that they may be swept as cleanly 

 and effectually as is commonly done with climbing boys, so 

 that the difference to the families who employ your machine 

 will be, that they have the same comfort of a clean chimney, 

 and are satisfied, that they no longer use a method which is 

 ftili of horrors, and a disgrace to a civilized country. 



I remain, Sir, 



Your obedient servant, 



B. M. FORSTER, 



Reference to the Engraving of Mr. Davis's Machine for Cleans- 

 ing Chimnep, PI. V^fig, 1, 2,3, 4. ■ 



Fig. 1 Represents the upper part of the machine ; A A Description of ] 



A A are four brushes for sweeping the four sides of the chim- ^''^ machine. \ 



ney, they are hinged to the bottom of a tube about three inches 

 diiiraeter; B li show two of the four springs which expand 

 the machine to chimneys of all sizes. The heads of tho 

 brushes are made about six inches long, and five wide; and 1 



form portions of cylinders, the hair being left longer at the ; 



top than the bottom. The hair at the ends of the brushes i 



being left still longer, namely, three inches and a half, for the ! 



purpose of sweeping the coiners of the chimney. C represents v 



the brush at the top of the machine proper for cleansing the i 



pot ; the machine may be used cither with or without it, but it | 



is very useful for cleansing stove pipes, by being used alone; it • 



is secured to the top of the rod by means oi a spring and \ 



socket, as the rods below mentioned, D D D D, four lines to 

 draw the brushes near together by a cord E, so that the ma- 

 chine may be forced up the chimney with greater facility. F, 

 the string to expand the brushes when the machine is at the top 

 of the flue. 



Fig. 2 Shows on a larger scale the top of one of the rods 

 separate. G, the spring attached to it. 



Fig. 3 Explains the manner in which the rods are joined j 



•together. H being a brass socket fixed at the lower end of j 



each j 



