568 Report of the Trials of Plourjhs, Harrows, Sfc, at Hull 
Fig. 52 shows the plough in elevation seen from the ris^ht-hand side of the 
beam. The position of tlie elevated mouldboard and its action on the coulter 
by means of the lever-rod b will be seen. 
Fig. 53 is a view of the plough as seen from above. 
Fig. 54 is a detached viev; of the coulter-lever, a is the shank, which passes 
down through the beam, and is supported by a i)in, through the coulter- 
boss, and is adjusted for turning from right to left by means of two set 
screws, a". The lever, e, is hung on a stud, c, in front of the coulter. The 
coulter can be placed in a more or less vertical position by means of a slot. 
The shank bearing against the set screw, c'-', raises or depresses the coulter- 
blade as may be required. The end of the lever, is brought into collision 
with the breast, and by the revolution of the latter is carried from right to left 
or vice versa. 
Fig. 54.— T7et(; of detached Coulter-lever of Dave fs One-way Single- 
furrow Plough, No. 'G60. 
Fig. 55 shows the manner in which the mouldboards are reversed, and that 
in which the share-shaft is connected with the leverage and universal joint. 
This is by the pin, g, which is better shown at Fig. 56, p. 570, giving a plan 
of share and sliare-shaft. 
Fig. 57, p. 570, is a view of the coulter, lever, &c. Tlie lettering will be 
understood by reference to Fig. 54. 
Fig. 58, p. 570, is a longitudinal section of the beam and coulter-boss, with 
the set screws, &c. 
Fig. 59, p. 570, is an elevation of the share and share-shaft. 
