Automatic Toy Dump Truck

I acquired this toy truck from a family friend today that just wanted to get rid of his excess stuff and thought it was really neat but haven't been able to find out very much about it. The box says it was made by Courtland Manufacturing Co. in Camden, N.J. and it has a star on the bottom of the truck that says "A Walt Reach Toy". The truck has a long running friction motor that says it is guaranteed for life. The truck is approximately 3" wide and a little less than 10" long. The truck itself is in pretty good condition, while the box is a little beat up and missing one end flap. Any information on this toy and the manufacturer would be greatly appreciated.