2 2 CARRIAGE-PART CH. Ill 



short section of a large fifth-wheel. This sway-bar 

 is plated with steel on its upper surface, and bears 

 against the under surface of the perch, which is also 

 plated at that point. The plate on the under sur- 

 face of the perch has an arm or lug projecting 

 downward and embracing the sway-bar plate so as 

 to prevent the sway-bar from springing away from 

 the perch under any jumping motion of the pole. 

 The sway-bar plate has projections near its ends, 

 which bring up against this lug when the axle has 

 turned through a certain angle, usually about twenty 

 degrees, to prevent the wheel from touching the body 

 when the coach is on the lock. A coach is said to 

 be 'on the lock,' when the front wheels are turned 

 as far as they can go without touching the body. 



The inside futchells project forward of the axle, 

 approaching each other near enough to form a chan- 

 nel into which the pole is fitted. Near their ends 

 they carry the draw-bar, or splinter-bar, which is 

 bolted on top of them. For the purpose of sup- 

 porting the ends of this bar, two straight pieces, 

 the outside futchells, run through the axle, and are 

 attached to the sway-bar (the plate of which runs' 

 over on top of them), and projecting in front, take 

 the ends of the splinter-bar, to the under side of 

 which they are firmly clipped. The splinter-bar is 

 straight, six feet long, and carries the four roller- 

 bolts to which the traces are attached. The roller- 

 bolts have flanges on top to prevent the traces from 

 slipping off, and the flanges of those on the outside 



