GLASS STRUCTURES AKD APPLIANCES. 



277 



this boUer is made with what is caUed 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, toilers are a source of constant waste and 

 trouble. 



Hartley and Sugden's G-old Medal Boiler. 

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



SECTION 



Fig. 58.— Terminal End Saddle Boiler. 



the furnace, and pass- 

 ing to the hack of the 



boiler, the products of 



combustion pass to the 



front in one stream, 



thence vmder the check 



plate, quite round the 



exterior, as shown by 



the arrows in Fig. 58, 



over the top, and into 



the chimney. Figs. 38 



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 



versd, as the 



doors and set- 

 ting are simi- 

 lar. Kot 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 



■Elevation slio-wing Method of Setting. 



rig. 61 Improved Saddle Boiler. 



"Big. 59.— Section of Terminal End Boiler. 



proved form. In ad- 

 dition to the surface 

 against which the flame 

 impinges and the ex- 

 terior, there are in this 

 boUer 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 

 retm-ns to the 

 back by the 

 two side flues. 

 All the pre- 

 ceding boilers 

 are very easily 

 set, there be- 

 ing no com- 

 plicated flues, 

 and although 

 coke is best, 

 they win con- 

 sume any kind 

 of fuel. In 

 addition to 

 the above, 

 there are several other forms 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 bums out before 

 morning. If tightly banked, it does not maintain 

 the heat. 



Pig. 62.— Setting of Fig. 6L 



