346 



New Patents lately em tiled. 



[Nov. 1, 



clear toward the part where the fun fets, 

 while light clouds flost very high over our 

 heads, we (hall fee thele at a luhfequent 

 period appearing of a very light red, 

 heightened by the diininution of light on 

 the earth, foon after obfcured, and at 

 length becoming extinfl in (hade. 



M. PriC'ir fupports his principles psrt- leifure will permit, 

 ly by the dodUine and fafts generally ad- 



mitted ; partly by others lefs commonly 

 known ; and \i'}]v by cbfcrva'i nS < f hif 

 own. He doef not howt-ve. flitter him- 

 felf that the prefcrn' fket'-h exh bits the 

 mtter in a fuiiabie li>:ht, and means to 

 piirlue the fuhjcfV by farthe> reltaiches 

 and ne«' exptricenis, if his pjwers anrf 



NEW PATENTS LATELY ENROLLED. 



MR. THOMAS JAMES PLUCKNETT'S, 



(dei^tford) Jdv a riew Methoa of 

 Mozoiag Corn, Grafs, &c. 



THE operation of mowing, according 

 to Mr. Pluckneit's pian, is per- 

 formed by means of a machine moving on 

 wheels, which tnay he worked either by 

 men orhorfes ; and according as it is done 

 by the former on the latter, the machine 

 njuft be lets or greater. Two wheels are 

 made moveable on an axis, and lo the 

 middle of the axis is fixed an upright bar 

 which turns round as the wheels tuin, 

 and upon (his bnr is fixed a circular cut- 

 ting knife or inftrument. The machine 

 thus constructed is driven o;>, and while 

 the wheels turn once the knife and the 

 bar to which it is faltened turn almoft 

 eleven time* ; the knife, when the ma- 

 chine is woiked by a man, is about twenty 

 inches long, hut when a horfe is the mov- 

 ing power, it is about three feet in length. 

 By a neat contrivance, the knife iili;s out 

 of its place if oppofed by any obltacle in 

 its courfe, and when thit it paiTcd it is 

 adjufted again by i(s own weight. By 

 another contrivance, corn that has been 

 feeat down by r^ins, wind, fee. is lailed 

 up, and thus prepared tor the cutting in- 

 ftiument to perfoioi its part of the bufi- 

 nefs. 



MR. H. E. WITHERBY'S (ISLINGTON), 



for a fieiv Method (f filtering IVater. 



It is not poflTible to def'crlbe tlie nature 

 •f this invention without the aid of plates. 

 The exdufive privilege is claimed for the 

 parts of the machine called the fyphon 

 and fountain, without any regard to the 

 fubftances ihrough whicli the water paffes ; 

 and the advanttges propofed are the laige 

 quantities of fluid capable of filtration 

 by this machine, and the eafe with which 

 the apparatus may be cleaned from the 

 impurities left by the water. Sponge is 

 recommended as the fyphon to bring the 

 water from one vefTel to another. 



Obfervation.—Vf^ heartily wiflj fnc- 

 •efs to every attempt made to purify this 



rno(f important article of life. By fome 

 medical men the greuter pirt of the cviU 

 to which the human fr.^me is fubjeft is 

 imputed to tlie want of pure and whole- 

 fonne water ; as a remedy they propofe 

 dillilled water: it would therefore bo de- 

 firahle that foine pradicable method fliould 

 be hit upon to obtain water pure, without 

 the expence of diftiliation. 



MR. WILLIAM Wilkinson's (needhau 



market), for improved Pan-tiles for 



covering Houfes, Ss'c. 



Thefe tiles are of two kinds, called 

 upper and lower, from their relative fitua- 

 tion with regard to each other when 

 formed into a covering. The lower tile 

 is formed fo that the greater or receiving 

 end may admit the lefs or dripping end of 

 the next tile above it into its cavity, after 

 the manner of troughs leading into each 

 other, A perforation is made at the 

 greater end of this tile, through which a 

 clout nail or other falfcning may be palled 

 into the lath that fuppuris it. The tiles 

 are lo made, that if two lower ones be 

 placed by the fide of each other at a proper 

 diltsnce, an upper lile will receive into 

 its cavity their raifed edges, be fupported 

 by the fhoulders formed in ihem, and 

 clofely cover the fpace between them. 



To the fpecification are annexed draw- 

 ings of the moulds in which the tiles are 

 to he made; and it is only with regard to 

 the (hape, not the fize, nor the method of 

 making of the tiles, that Mr. Wilkinfon 

 hys claims to an exclufive right. He ne- 

 verthelels has infertsd his phn of manu- 

 facturing tiles, which is as tolluws : — the 

 mould confifts of three parts, viz. the 

 ftock, the mould-board, and the frame. 

 The ftock being made fatt on a table by 

 a wedge ar.d ftaple, the mould-board and 

 frame are placed on it ; the mouhi is then 

 filled with earth, and ftruck off in the 

 ufual manner. The tile fraire and mould- 

 board are then taken off the ftock, and, 

 with the face of the tile downward, placed 

 on a hand-board; the tile and inould- 

 i boitrd 



