DESCRIPTION OF THE INDIAN HAND MILL. J 87 



The projection of the wooden plug in the under ftone in How the fine- 

 which the gudgeon is inferted is ib regulated as to keep the l^^uhted. ° Ur 

 ftones at the proper diftance For forming the fineft flour : if a 

 coarfer fort is wanted, it is readily obtained by placing one or 

 more flips of paper or card in the notches of the upper ftone, 

 between the crofs jbar and the ftone. 



The under ftone is ufually placed on the earthen floor of the J-ocal fituatioa 

 hut, which is previouily beaten and ("wept, or otherwife it is or P 01tl0n * 

 placed on a cloth fpread on the floor. As the grain is reduced 

 to flour it efcapes, together with the bran, at the circumfe- 

 rence of the ftones, and is collected on the floor or on the 

 cloth. 



I would fuggeft as an improvement of this Ample machine, Improvements 

 the forming the crofs bar with three claws, which would give fuggefted. 

 three points of bearing inftead of two, and confequently ren- 

 der the upper ftone more fteady *, I would alfo fuggeft, that 

 the block of wood which contains the gudgeon, fhould pafs 

 completely through the under ftone ; thus it might eafily be 

 adapted to the requiflte height by a few blows of the mallet. 

 Should it be thought neceflary, the ftones might be enclofed 

 in a drum, and fitted on a ftand. 



Explanation of the iketch, Plate X. Reference rt> the 



Fig. 1 . Reprefents the lower face of the upper ftone. figures. 



Fig. 2. Reprefents the upper face of the fame. 



Fig. 3. Is an elevation of the mill. 



Fig. 4. Is a fection of the mill. 



«,'Is the crofs bar, which is reprefented with three claws. 



b y Is the handle by which the upper ftone is turned. 



c, Is the fteel gudgeon on which the upper ftone revolves 

 by means of the crofs bar. 



d t Is the fmall block of hard wood in which the gudgeon is 

 ftxed. 



* It is likely that this fteadinefs would do harm. The totter in 

 all probability anfwers the fame purpofe, of pounding, as the vertical 

 dancing motion of the upper mill ftone upon the fupport of its 

 pivot, of which Defaguliers has given a very rational account. 

 Leaures II. 428. 



IX. An 



