INSTRUMENT FOR COUNTING THE tlPTS PROM A MINE, J 15 



mines. Should the Society be of the fame opinion, then I Inftrumcnt fot 

 will fend you a ftill more complete model than at prefent. 5ifb"froLV 

 Your fpcedy anfwer will very much oblige mine. 



Your moft obedient Servant,^ 



- JOHN ANTIS. 

 Fulneck, March 6, 1802. 

 Charles Taylor, Efq. 



SIR, 

 I HEREWITH fend you a model of my machine, which I 

 have before mentioned to you, for pointing out any number of 

 boxes or bafkets of coals, or other minerals, whicli are drawn 

 out of a pit in any given time. I (hall be much obliged to 

 you, if you will lay it before the Society for the Encouragement 

 of Arts, &c, for their infpedion, and fhall be glad that thej 

 find it of public utility. 



It will ealily be perceived, that by enlarging the wheels 

 and multiplying the cogs of them, the number of yards re- 

 quired for the depth of a mine, as likewife the number of boxes 

 which are wanted to be pointed out may be carried to any 

 extent. 



I am fo little acquainted with coal-pits, or any other mines^ 

 that I do not know the technical terms by which the different 

 parts are called, nor all the methods now ufed to draw up thofe 

 materials ; I muft therefore beg the indulgence of the Society, 

 if I do not always exprefs myfelf with accuracy. 



By inventing this machine, I aimed at afcertaining the 

 number of boxes, my ideas relpe^ing which I will endeavour 

 to defcribe, to the beft of my abilities. 



Firft, the rope muft be fo long, that it can be faftened at its 

 middle to the windlafs, and that each end thereof may reach 

 to the bottom of the pit. This precaution will not be neceflary, 

 if it can be prevented by any other means from lliifting or 

 Aiding, which I leave to others, more acquainted than I am 

 with the prefent practice, to effed. 



The roller A, Plate VII. Fig, 1, in the model, with the endlefs 

 fcrew, reprefents the gudgeon in full fize of a hand windlafs, 

 fuch as are ufed in this neighbourhood, particularly where the 

 pits are of confiderakble depth. As no great (Irefs is laid upoa 

 this fcrew, it may be made, in order to fave labour, of brafs, 



I 2 aod 



