BAIR.D &.TATLOCKL (LONDON) LTD. 



6189 



6189 Crusher, bucking board, 2j by i8i in. inside, with pounder, clean castings, 

 bucking board about i cwt. Weight of pounder about 21 Ibs. 



Weight of 



1 15 



6190 

 6190 Crusher, hand, for reducing ores to fine powder, side straps and grinding jaws of steel 



500 



Fig. i 6191 Fig. 2. 



6191 s The Weatherhead Combined Mortar and Pulveriser, an indispensable machine in 

 every laboratory for reducing to an impalpable powder, in an incredibly short time, all 

 substances from clay to pig-iron. This machine will pulverise all kinds of ores, coal, 

 rocks, pig-iron, phosphate, clay, etc., and also for amalgamating gold ores. Weight, 

 100 Ibs. ; diameter, io in. ; height, 8 in. . . . . . . . . ..600 



The Weatherhead mortar will do the work of two other machines, a rock- breaker and buckboard, or mortar, and therefore 

 it is very cheap at price named. 



It will pulverise faster than any other hand machine ever Invented, as can be seen by referring to the undernoted tables. It 

 s easy to clean, as there are no joints or corners for pulverised material to stick in. It revolves easier when pulverising material 

 ian it does when empty. It is the only hand machine that discharges the material as soon as pulverised. No sieves need to be 

 ised with this machine, as by passing the material through the second time, it will be reduced fine enough for all laboratory purposes, 

 .hereby saving a great deal of labour and time sifting. The working surfaces are tempered as hard as steel can be tempered, 

 .hereby minimising the wear. The machine has been in constant use for over five years, so that our claims for it 

 lave been thoroughly demonstrated. The cover of the machine is made so that it can be used for a small hand mortar, the end 

 if the handles being rounded to form a pestle. 



DESCRIPTION. 



A, cover. B, rotating pestle, c, casing or shell. D, handle, of which there are two. E, crushing post, which is corrugated 

 nd slightly oval, producing great crushing power. F, conical currugated opening in centre of rotating pestle, where material is 

 ntroduced. G, spout where material is discharged as fast as pulverised, n is one of four lugs on the side of rotating pestle, 

 vhich carry the pulverised material to spout. 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



1131 



