VEHICLES, ROLLERS, HARROWS AND MARKERS. 41 



the right as raised. This jack is very cheaply made, 

 and varies in dimensions according to the weights to he 

 raised. In the one shown in figure 40, the lever a 

 is made of one-inch stuff, and the post b and the 

 bearing-piece c of two and a half by two and a half. The 

 latter two are slotted to admit of the lever working freely 

 in them. The bearing-piece is held to the lever with 

 an iron or a wooden pin, a little behind the post or ful- 

 crum, so that when in use the jack will support the wagon 

 without any other fastening. 



ADJUSTABLE WAGON" SEAT. 



A six-inch board has slots cut in each end, so as to go 

 between the stakes of the wagon. 

 Another board, one foot wide and 

 three feet long, is fastened to the 

 first in the position shown in the 

 engraving, figure 41. An old 

 seat, from a harvester or mower, 

 is fastened upon the boards, when 

 an easy and satisfactory seat is 

 Fig. 41. A WAGON SEAT, provided for a wagon when in use 

 for purposes of drawing wood, lumber, etc. 



LUBRICATING AXLES. 



Many lubricate axles only to prevent wear ; they over- 

 look the fact that by reducing the friction they lessen the 

 draft. A well-oiled axle lightens the load. Oil to axles 

 is best governed by the rule of "little and often." If 

 too much is used it exudes at the ends, gathers dust, and 

 thus the lessening of the friction is not so great, while 

 oil is wasted, In nearly every case where the lubricant 



