380 



Monlhli/ Bilmfpcct of the Fvic-A.rl^. 



[Nov. I, 



onr readers that the principle may he ap^ 

 phed to give motion and elVeL't to fcrews, 

 capftans, lathe?, and all other tugines 

 _>vHich a6t in the way of rotation. Tiie 

 ivheeis may be conlhucted of any proper 

 jTiaterial, according to the intcndt d ui'es, 

 ap.d connected by teeth, bands, flops, or 

 chains, or any other method by which 

 wheels arc made to drive each other ; and 

 tlie fiift motion may be i;iven by any of 

 the forces conamonly ufcd for inch pnr- 

 pofes. 



KR. THOS. JAMES I'LUCKNETt's (chRTST- 



ciiuKcii, surrf.y), /i)r a Macliinejor 



dibbling and drilling all Kinds of Grain 



and Fu/fe. 



This machine confifts of a hollow 

 poller, 01 ^vood or iron, three feet in di- 

 ;imetei\ The roller, about a foot long, 

 is made with bars of iron, placed round 

 the circuint'erence of the roller, about 

 fix inches afunder ; the diftance of tliefc 

 "bars from each otbcr will be the exact 

 fpace of one dibbling liole from iMiother. 

 Through the centre of the roller is lixcd 

 a fquare axle, which proJ£6ts for the 

 .purpofe of fccuring to it either fliafts or 

 handle. On tliis iqnare of the tixle is 

 hung a hopper or trough within fide the 

 roller. The month of the hopper may 

 te made to any convenient lize, but the 

 bottom niufl. beabont two inches wide. 

 Dearly of the length of the roller, and of 

 a ftrength fufficicnt to fufiain the conti- 

 nued fliocksof tlic bars, which will Itrike 

 'tiie bottom of tlie tumbler, which is fixed 

 in the bottom of the liO[)per. In order 

 that the tumbler may dehvcr out the 

 fame quantity of Iced at every time, the 

 bars of the roller Urike againft the lower 

 part of it, which is fixed at the under 

 lide of the hopper. There muft be cut 

 ont of the n})pcr edge, next the front of 

 the hopper, a vcctfs, of a proper fize for 

 the purpofe. The form of the recefs 

 Tiill be like the bowl of a tea-fpoon, but 

 jiialler or otherwife as may be found ne- 



cefl'ary for the quantity of feed to be de- 

 livered. I'his recefs will fliut up the mor- 

 tife or groove, until it is thrown open by 

 the playing of the lower part of the 

 tumbler agninll the bars, as the machine 

 is mo\ed forv\ards. To the low'er cn.d of 

 the tumbler is fixed a prong on a joint, 

 which will only open from the under fide 

 of the hopper, fi a.; to project perpendi- 

 cularly downwards, and there be ftoppcd 

 by means of its joint revolving no fui- 

 tlicr round the lower end of the tumbler. 

 This being only two inches long, will 

 Alike the bars, but when doubled under 

 the hopper, by means of the joint, the 

 bars will pafs freely by it without dillurb- 

 ing the tumbler, and confequently not 

 let out any of the contents of the hop^ 

 per, which is necclfary to preferve the 

 contents of the hopper from vyafte, by 

 rolling the machine the reverfc way to 

 that when at work. It is called a prong 

 becaufe it is fixed on the outfide of the 

 tumbler, with two ears, through which 

 and the bottom of the tumbler is a lit-, 

 tie pillion, by which the hole that the 

 dibble makes will be filled up, and the 

 end covered over, as the dibble will de- 

 poiit the grain between the prong, which 

 is driven inio the ground, at the fame 

 innant the bais lift the lower part of the 

 tumbler and prong, and confequently the 

 dibble muft be fixed into the earth in th^ 

 fiime proportion as the bars lift the lower 

 ends. The hind part of the dibble is 

 hollowed fiirticiently to convey the grain 

 to the ground ; the lower part is pointed, 

 and the front is about the thickncfs of a 

 coulter, becaufe it has two motions, be^' 

 ing liruck into the ground, and paffing 

 forward at the fame time. The upper 

 end is placed in an eye of iron, about as 

 much above the joint as the j)oint is be- 

 low, fixed to the outfide of the hopper, 

 through which it pafles freely every time 

 it ftrikes into the ground : this is done 

 by the motion of the tumbler, which 

 turns out the feed at the fame inftant. 



MONTHLY RETROSPECT OF THE FINE ARTS. 



*^* 27<e lll'e of alt ]^cw Fri/cts, and Comnmnicationa of Articles of Intelligence, 



are rcqiiejlcd. 



SO much of the attention of many of on other fabjefts. \Vc take this oppor- 

 our leading artjlts has been lately tunity of fuggefting a hope, that foine of 

 engrotVed by the coininenioratioii of the llie engravers will make a little change in 

 public charaffers that- have been loll to their manner, in a particular that we 

 the country and their fiiendj, that we have often obferve'd :;'. f. what, we be- 

 have not had the ufiud number of prints hcve, is in the engraver's cant catlecl 



1 fubduinj; 



