GLASS STRUCTURES AND APPLIANCES. 



277 



this boiler is made with, what is called a terminal end. 

 Besides the surface exposed to the direct influence 

 of the fire and the exterior (as in the ordinary- 

 saddle), there is an additional flue. After leaving 



well set, boilers are a source of constant waste and 

 trouble. 



Hartley and Sugden's G-old Medal Boiler. 



— Eigs. 61 and 62 show the saddle in another im- 



ELEVATIOM 



SECTION 



Fig. 58.— Terminal End Saddle Boiler. 



-Section of Terminal End Boiler. 



the furnace, and pass- 

 ing to the back of the 

 boiler, the products of 

 combustion pass to the 

 front in one stream, 

 thence under the check 

 plate, quite round the 

 exterior, as shown by 

 the arrows in Fig. 58, 

 over the top, and into 

 the chimney. Figs. 58 

 and 59 show this boiler 

 with patent top feeder, 

 which is re- 

 commended 

 as being more 

 economical, 

 inasmuch as 

 the boiler can 

 be stoked from 

 the top in- 

 stead of the 

 front, or vice 

 versa, as the 

 doors and set- 

 ting are simi- 

 lar. Not hav- 

 ing had any 

 experience of 



this form, the recommendation is given as received ; 

 but, judging from the section, we think that the 

 position of the feeder must interfere with the 

 removal of accumulations of soot and dust when 

 cleansing becomes necessary. Fig. 60 shows the 

 same boiler with part of the brickwork left un- 

 finished, to show the mode of setting. If not 



Fiar. 60.— Elevation stowing Method of Settiu: 



Fig. 61.— Improved Saddle Boiler. 



proved form. In ad- 

 dition to the surface 

 against which the flame 

 impinges and the ex- 

 terior, there are in this 

 boiler three additional 

 flues. After quitting 

 the furnace and passing 

 to the back of the boiler, 

 the heat runs through 

 the central flue to the 

 front in one stream ; 

 it then divides, and 

 returns to the 

 back by the 

 two side flues. 



All the pre- 

 ceding boilers 

 are very easily 

 set, there be- 

 ing no com- 

 pKcated flues, 

 and although 

 coke is best, 

 they will con- 

 sume any kind 

 of fuel. In 

 addition to 

 the above, 



there are several other form.s of saddle, including 

 Gray's Corrugated, and the Witley Court. The draw- 

 back to the latter, when made in or under medium 

 size, is the smallness of the space for the fire. If 

 banked to draw at all, the fire burns out before 

 morning. If tightly banked, it does not maintain 

 the heat. 



Fig. 62.-SettiDg of Fig. 61 



