VEHICLES, ROLLERS, HARROWS AND MARKERS. 39 



with ease, and raise the box from its bed in half the time 

 four men could do it by hand. 



JACK FOR WAGON BOX. 



A cheap method of removing a wagon box is shown in 

 figure 38. A platform to receive the box is made by 

 driving stout stakes into the ground and nailing cross- 

 pieces to them. The platform should be as high as the 

 top of the wagon standards. The lifter consists of a 

 stout piece of timber, which will reach two feet above 

 the wagon box, the top rounded, and a pin, driven into it, 

 which passes through a slot in the lever. Two chains, pro- 

 vided with hooks, are fastened at the short end of the 

 lever, and a rope at the other. One arm of the lever is 



Fig. 38. JACK FOB WAGON BOX. 



three feet long, and the other nine feet. The wagon is 

 driven close against the side of the platform. The lifter 

 is placed, as shown in the engraving, on a line midway 

 between the wagon and the platform. The hooks on 

 the end of the chains are caught under the box, or the 

 rod which passes through the rear end of the box, and 

 by pulling on the rope, the box is easily lifted out and 

 swung around on the platform. Then lift the front 

 end over. The jack can be used to return the box to the 

 wagon. The pieces need not be large, and when made of 

 seasoned wood, the jack is easily handled, 



