SOUTH CLIFTON COLLIERY. 



167 



sary to give them a spell. Tlie underground stables have 

 accommodation for 60 ponies, and are in charge of two hostlers. 

 According to the grade of the track leading to a gathering 

 station or flat, two ponies may be necessary to pull one full 

 skip, or one pony may draw one full skip. 



The lamp cabin is a compact room with barred windows, 

 through which the men are handed their lamps. The safety 

 lamps used are of the bonetted deflector type, made by Messrs. 

 E. Johnson, Clapharn and Morris Ltd. (Fig. 102).' The oil 

 chamber is a brass casting, in one piece, the bottom not being 

 soldered on separately, as in lamps of other makes, such joints 



Fi<r. 102. Johnson, Clapham and Morris Safety Lamp. 



being weak points through which oil leaks. The wick used is 

 flat, and it is raised or lowered by turning the thumb screw 

 (Q), which causes the spindle (P) to revolve. This spindle 

 has a worm (M) at the top end, which engages with a wheel 

 that moves those (K) which works the wick up or down. With 

 such an arrangement there is no danger, as with the ordinary 

 pricker, which might drop down, and the top portion accident- 

 ally become pushed into the wick, then if the lamp be placed 

 on a flat surface the pricker is pushed up, and with it the wick 



