Chap. XX. Of the Drill-Boxes. ^ x 



the larger Spindles are; not only becaufe it would be 

 in Danger of breaking by the Weight of the Hop- 

 per, and by the Twilling (or Wrenching) of the 

 Wheels; but alfo becaufe it would foon become loofe, 

 by wearing the hollow Cylinder thro' which it paffes; 

 and it would be apt to open the Brafs Flanches from 

 the Bottom of the Hopper, whereby the Seed might 

 runout, befidefeveral other Inconveniencies; all which 

 are prevented by turning the Spindle in the manner 

 fhewn in this Figure ; for here the Spindle never 

 preiTes againft the hollow Cylinder, with any greater 

 Force than that of its own Weight, which is fo very 

 little, that the Friction made by it is next to nothing. 

 A the Spindle, exactly fitting the Bore of the hoJ r 

 low Cylinder; which, when it enters the faid Cylinder 

 at its left End, in Fig. 9. will be flopped by the 

 Wreath B B B; which Wreath, being circular, is cafb 

 on the Spindle, and is Part of it ; the other End of 

 the Spindle will then appear without the right-hand 

 End of the faid hollow Cylinder, at E in Fig. 9, 

 and is kept there by the Wreath Fig. 14. which is to 

 be put on upon the End of the Spindle, until it come 

 to the Shoulder at #, which Shoulder is exaclly even 

 with the End of the hollow Cylinder ; fo that this 

 Wreath will touch the End of the faid Cylinder by- 

 its whole Surface. Then, to fix in this Wreath from 

 coming off, we make ufe of the Slider, Fig. 15. whole 

 Two Claws A, B, being thruft down by the Two 

 Notches of the Spindle, at b and c 9 until its other Part 



Tongue is of this Fafnion ; for this Steel Tongue, if narrower, 

 would either be too ftiff, or elfe apt to break, nor would there be 

 Room in the Mortife for a fufficient Setting-fcrew to follow it. 

 But there is another Faihion, wherein a narrower Brafs Tongue 

 has a broad Spring behind it; and when it is in this Manner, the 

 Mortife may be a Fourth of the Breadth of this. I have had 

 many of thefe when I made my Boxes in Wood ; but cannot de- 

 scribe them by thefe Cuts ; neither are fuch narrow Mortifes ne- 

 cefiary, unlefs it were for drilling Tobacco feed, Thyme-feed, or 

 fome other Sort of an extraordinary Smalr^efs. 



c. 



