FITTINGS AND DETAILS. 93 



and heavy bruiser, and in lifting the corn into the hopper. An 

 engine of this description can be worked at the cost of \d. 

 per horse-power per hour, or \d. per hour in excess of that for 

 steam. It has an advan- 

 tage over the latter, and Fig. 69. 

 especially over horse-power, 

 both in economy of time 

 and space. It is always 

 ready for use, and only 

 requires the ignition of the 

 gas jets, and a turn of the 

 wheel, to set it in motion. 



For heating ordinary boilers and furnaces any kind of coal 

 may be used. Anthracite is the best fuel for gas engines, on 

 account of its freedom from vapours, and greater cleanliness. 



The shafting, 2 J inches in diameter (with the position of the 

 several pulleys and brackets), for transmitting the power to the 

 machinery on the upper floor, is shown on Plates 47 and 48 ; 

 the chaff-cutter making about 4J cvvts., and the bruising mill 

 bruising from 4 to 5 bushels per hour. 



The hoist before referred to, connected with the motive Hoisting and 

 power by the ordinary shafting and gear, as shown on Plate 47, ^^^^" 

 or a wheel (illustrated on Plate 8), or a small crane for light 

 work, as shown on Plate 51, are generally considered sufficient 

 for the purposes of lifting in ordinary stables, but where several 

 loads of hay have to be stored in a limited timiC, and steam or 

 a large gas engine is in use, a portable Jacob's ladder is a great 

 saving. 



This contrivance consists of two endless bands of leather Jacob's ladder, 

 running parellel with each other, but not at too great a rate to 

 prevent a truss of hay being placed on each of the pairs of 

 arms, which project from the straps, and convey the trusses in 

 continuous procession to the loft. 



Where sliding doors are used (and they are much more con- Hayloft doors, 

 venient for haylofts than those with hinges), it will be found 



