[ 439 ] 



cure it from falling. H. H. Two crofs bars between 

 thofe feet. Fig. 3. the knife, with two edges, which 

 being turned with its claws, b. b. t^c. at right angles 

 to its own plane, is put into the mortices, d. d. Iii" 

 fig. 2. the fcrew-pins, with the hand nuts, C. C. 

 tighten it in the frame ; and fig. 4. which reprcfents 

 a collar of iron, about a quarter of an inch thick, of 

 which there are about eight in number for the two 

 claws ; their ufes are to put between the fhouldcrs of 

 the knife, and the upper fries of the frame, and are put 

 in number, as the edge of the knife is required to be 

 raifed above the floor of the Aider, in order to fize the 

 flice, /'. e. they are put on the upper fide of the frame 

 to make the flice thick, and removed from that 

 fide, and put between the hand-nuts and underhdes of 

 the frame, when the flice is to be thinner, in propor- 

 tion thereto. The flice is cut exaitly as a carpenter's 

 inftrument, called a fpook-fhave, ^c. takes its {hav- 

 ing, only the turnep-knife cuts both backwards and 

 forwards. There is alfo a contrivance for cleaning 

 ■ the eye of the frame, A. fig. 2. when liie knife is 

 placed upon it, viz. when the Aider is pulled, ^\-. as 

 much to one end as the ftrop will admit, there is a 

 piece of hard wood, nailed upon a crofs bar, at I. 

 fig. I. which projects about an inch towards the infide 

 of the machine, and is fo thin as to ram in below the 

 edge of the knife, whatever flice it is fet to form, f:.r 

 it is not fo thick as the leafl Jlice the inftrument con make, 

 viz. half an inch., and thereby clears the eye ; at eacii 

 end there is the faaie contrivance, which effectually 

 prevents any interruption in the cuttin'j;. The way tp 

 ufe the machine is very cafy and natural j for as foon as 

 the hopper is idled at random, by throwing up a ban<et 

 full at a time, two men iet themiclvcs down on ftools, 

 is'e. placed conveniently, and put out their feet againll 

 the ports of the machine, then take the rounds in 

 their hands, about the places marked ]^. B. B. B. in 

 fig. 2. and fo pull the frame backwards and forwards 

 as abovefaid ; and, from their pofition of body, they 

 have great power, the extenfors of the legs, thighs, 

 back, and arms, being mutually employed in che fame 

 advantageous manner as ini-ovving a bo:;', i^c. The 



knife. 



