208 



Popular Science Monthly 



A pivoted platform is constructed flush with the roadway in front of the bin in which 

 the truck is to be unloaded. By turning a crank five tons can be dumped in a minute 



To Unload This Truck You Simply 

 Tilt the Platform 



A WESTERN milling company has 

 found it profitable to use motor 

 trucks which can be tilted in their entirety. 

 The plan pays because the longest truck 

 run is not more than eight hundred feet. 

 All motor vehicles of any kind turned out 

 to be failures because they lost too much 

 time being loaded and unloaded. 



Study the accompanying illustration and 

 you will see that the tilting device consists 

 of a pivoted platform flush with the road- 

 way in front of the bin in which the load of 

 the motor truck is deposited after it has 

 been carried from another part of the plant. 

 The fulcrum of the platform coincides with 

 the vertical line through the center of 

 gravity of the truck with its entire load. 

 This makes it extremely easy for one man 

 to tip the entire vehicle, simply by turning 

 a crank-handle at the side of the truck. 

 The crankhandle is connected by means of 

 chains and gears with a large toothed gear 

 sector bolted to the under side of the plat- 

 fprm. 



After the grain has been durnped, the 

 platform and the truck swing back to the 

 level position by a half turn of the crank- 

 handle, simply because the truck is heavier 

 in the front than in the rear when empty. 



How Much Do You See When You 

 Look at an Object? 



THE various committees and individuals 

 interested in the "safety first" move- 

 ment are agreed that although the move- 

 ment is still in a progressively fluid state 

 there is not much more that can be done 

 until the individuals most concerned are 

 taught to use their eyes more effectively. 

 "Having eyes they see not," is the plaint 

 of those who would safeguard the general 

 public from the hundred and one accidents 

 that daily occur. 



It might prove pleasurable to compare 

 notes on observation. Let two people, 

 for instance, take the same walk or view 

 the same object for the same length of time 

 and then tell about. It will be found 

 that hardly one out of ten will notice more 

 than the most obvious facts. It was the 

 custom of one of the old philosophers to 

 give a new student some simple object — 

 in one case it was the head of a fish — and 

 tell him to study it and then tell all he 

 knew about it. The student usually re- 

 turned in about an hour's time v/ith a com- 

 pleted paper on the subject; but the paper 

 was generally returned with the remark that 

 if it took an hour to learn such a little it 

 would require a month perhaps to get a 

 fairly good grasp of the subject. 



