Weighing Goods Automatically 



A machine that insures 

 the merchant against loss 



IN putting up package goods such as 

 sugar, coffee and rice there are two 

 sources of loss. One is undue waste of 

 time in weighing the contents by hand 

 filling, and the other is due to giving over- 

 weight. 



Consider 

 firs t — t h e 

 weighing by 

 hand. A good 

 clerk can 

 weigh only 

 five or six 

 packages a 

 minute, and 

 experiments 

 show- that 

 each of the 

 packages con- 

 tains a "pres- 

 ent" for the 

 purchaser, of 

 half an ounce 

 or less of the 

 commodity. 



Some mer- 

 chants have 

 tried the plan 

 of setting the 

 scales to weigh 



short, trusting to correct the 

 overweight in this manner, 

 but this is by no means ac- 

 curate. This was proved by 

 a test in a large grocery 

 where that system was tried. 

 Out of two thousand pack- 

 ages reweighed, it was found 

 that over ninety percent ran 

 overweight. Less than five 

 percent showed underweight, 

 although the scales had been 

 set two ounces short. 



An electrically-operated weigher has 

 been produced to overcome this defect. 

 It handles from fifteen to twenty-five 

 weighings per minute. Its features are 

 an even balance scale, agate mounted, 

 a mechanical cut-off, tripped by elec- 

 tricity, which cuts off the flow of the 

 commodity in full stream and a control 



When the desired amount has been weighed out, an 

 automatic cut-off is operated which prevents waste 



box which allows for the amount in sus- 

 pension; that is, the amount in the air at 

 the moment the cut-olT is operated. 



The weight plate of the scales rests upon 

 the lever, which is thereby depressed, and 



the electrical 

 contact is 

 broken. When 

 the goods ap- 

 proach the 

 weight re- 

 quired, the 

 tension of the 

 spring causes 

 the weight 

 plate to be 

 raised a bit 

 prematurely 

 and contact is 

 made by 

 which the 

 electric cir- 

 cuit is com- 

 pleted and 

 the cut-off 

 tripped. 



All of the 

 parts are 

 made of the 

 highest qual- 

 ity of metal, to prevent in- 

 accuracy due to wear. The 

 tension screw is adjustable, 

 so that it can be regulated to 

 allow for all conditions, even 

 for weather, which might 

 cause a variation in the flow 

 of the commodity. A test 

 weight is used and then the 

 standard of accuracy is 

 divided into three parts, 

 high, low^ and exact balance. 

 The machines are self-test- 

 ing, so that the need of adjustment is 

 quickly made evident, and their regula- 

 tion is easily accomplished even by an 

 unskilled operator. Thus extrenie ac- 

 curacy as well as high speed in w-eighing 

 package goods is secured. On the other 

 hand, automatic weighers of many designs 

 allow for practically no inaccuracy. 



i*s»e'/ 



Contact baK Binding post 

 How the weigher 

 works automatically 



35 



