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Simple Chain Guides 



Simple chain guides of malleable prevent the hand chain running off the hoist wheel. 



"Long Wheel Base" Tandem Trucks 



Each truck has two large, grey iron travelers, mounted tandem in a swiveled tracker 

 wheel frame, like the trucks on a railroad car. 



This arrangement keeps the travelers always in alignment with the track, doing away 

 with any tendency to turn and bind, causing friction and wear. It also does away with 

 any tendency to jerk, and make the carrier push hard. 



Every farmer who has ever owned or used one of the older style of carriers that run 

 on a flange track, with the tracker wheels side by side, will remember distinctly enough 

 how jerkily and unevenly such a carrier runs on the track, and how hard it was to push. 



But how many have ever stopped to figure out the cause of the jerking motion? Per- 

 haps this will explain it. 



Each truck of a carrier is hung on a swivel, so that the carrier will take the curve. In 

 order that the trucks may swivel, there must be some play in the swivel joints. When you 

 start to shove the loaded carrier along the track, the friction on the track flanges causes the 

 tracker wheels to lag back — then suddenly the shove on the carrier becomes strong enough 

 to overcome the friction, when the tracker wheels jerk forward. 



Then they lag back again — then jerk forward. You who have used such a carrier 

 know how hard it is to push along the track, and how as the swivel wears more and more, 

 the trouble becomes more and more aggravating. 



This jerkiness is forestalled in the James Carrier by means of the tandem tracker 

 wheels. For any of the tracker wheels on a James Carrier to lag back or jerk forward, 

 it would be necessary to raise either the front or the rear wheel. Here's an illustration : 



Take an ordinary hoe, and hook the shank over the track ; give the handle a shove 

 parallel with the track, and it will swing back and forth like the pendulum of a clock. 



Now take a two prong or two shank garden hoe, and hang this over the track so that 

 both shanks touch the track, giving you a two-point suspension, the same as you have with 

 the James tandem tracker wheels. Now give the handle a shove in line with the track, it 

 will sway back and forth two or three times and settle into position. 



This is brought about by the fact that in order to sway, it is necessary to raise one 

 of the two points of suspension. The same principle applies to James tandem tracker 

 wheels. 



The tracker wheel axle is of lathe-cut steel, the journal being machined and surfaced 

 to size, so that the axle fits perfectly. There is an oil pocket around the axle, which dis- 

 tributes the oil evenly, adding to the life of the carrier and making it run more easily and 

 smoothly. The oil pocket is filled through oil hole in the hub shown in the picture. 



Keeper Prevents Carrier Jumping the Track 



The tracker wheel frame is so shaped that it prevents the carrier from jumping the 

 track ; in fact, the carrier can be removed only by the human hand, swinging the tracker 

 wheels, wheel frame and frame support to one side and lifting them at the same time. 



