Weighing scale for moving loads

Abstract

A weighing system for material suspended from a rail or trolley. The system includes a transition track between the regular track and the weighing track to avoid oscillation of pressure on the weighing track which causes difficulty in rapidly arriving at a proper weight. The transition track is biassed away from the weighing track so as not to cause a false weight reading. It also includes a novel trolley moving mechanism for moving the trolley as it passes over the weighing mechanism.

I claim as my invention:  
     
       1. A system for weighing a load on a trolley comprising a divided main track, trolley means rolling in one direction on said main track, weighing means for  a weighing track section bridging the division in said main track section , weighing means for measuring the weight on said weighing track seciton, a transition support section between said main track and said weighing track section, said rolling of said trolley means in said one direction defining an entrance end and a discharge end of said transition support section and an entrance end of said weighing track section, said entrance end of said transition support section being in contact with and rockingly supported on a part of said main track at a pivot line not further in said one direction than vertically below the entrance end of said transition support section, said discharge end of said transition support section being formed to engage and to be supported by said entrance end of said weighing track section. 
     
     
       2. The system of  claim 1  in which powered transit means is positioned to engage said trolley means to move said trolley along said main track and over said weighing track section. 
     
     
       3. The system of  claim 2  in which said powered transit means includes a second track parallel to but spaced above said main track, arm means movably mounted on said second track, and a powered chain engaging said arm means to pull said arm means along said second track, said arm means being engagable with said trolley means to transmit motion of said arm means to said trolley means. 
     
     
       4. The system of  claim 3  in which auxiliary transit means is suspended beneath said weighing track section, said auxiliary transit means including a driving mechanism engagable with said trolley means to move said trolley means along said weighing track section at a linear speed slightly greater than the motion along said main track. 
     
     
       5. The system of  claim 4  in which said auxiliary transit means includes a motive unit,  means and an auxiliary chain means driven by said motive means, said auxiliary chain means being engagable with said trolley means to move said trolley means at said slightly greater lineal speed. 
     
     
       6. The system of claim  4   5 in which said motive means includes a constantly running motor, and means for engaging said trolley means, said means for engaging said trolley means being operable by electrical switch means in reaction to the passage of a trolley means. 
     
     
       7. The system of  claim 1 , further comprising a spring means biasing said discharge end of said transition support section away from said weighing track section until the weight of said trolley means on said transition support section overcomes said spring bias. 
     
     
       8. A system for weighing a load on a trolley comprising a divided main track, a trolley rolling in one direction on said main track, a weighing track section bridging the division in said main track, a scale being able to measure the weight on said weighing track section, a transition support section between said main track and said weighing track section, said rolling of said trolley in said one direction defining an entrance end and a discharge end of said transition support section and an entrance end of said weighing track section, said entrance end of said transition support section being rockingly supported on a part of said main track about a pivot line not further in said one direction than vertically below the entrance end of said transition support section, said discharge end of said transition support section being formed to engage and to be supported by said entrance end of said weighing track section. 
     
     
       9. The system of  claim 8  in which a primary transport system is positioned to engage said trolley to move said trolley along said main track and over said weighing track section. 
     
     
       10. The system of  claim 9  in which said primary transport system includes a second track parallel to but spaced above said main track, an arm movably mounted on said second track, and a powered chain engaging said arm to pull said arm along said second track, said arm being engagable with said trolley to transmit motion of said arm to said trolley. 
     
     
       11. The system of  claim 9  in which an auxiliary transport system is engagable with said trolley to move said trolley along said weighing track section at a linear speed slightly greater than the motion along said main track. 
     
     
       12. The system of  claim 11  in which said auxiliary transport system includes a motive unit, and an auxiliary chain driven by said motive unit, said auxiliary chain being engagable with said trolley to move said trolley at said slightly greater lineal speed. 
     
     
       13. The system of  claim 12  in which said motive unit includes a constantly running motor, and a clutch selectively transferring power from said motor to said auxiliary chain, said clutch being operable by a switch in reaction to the passage of said trolley. 
     
     
       14. The system of  claim 8 , further comprising a spring biasing said discharge end of said transition support section away from said weighing track section until the weight of said trolley on said transition support section overcomes said spring bias. 
     
     
       15. A system for weighing a load on a trolley comprising: 
       
         a. a divided main track;  
       
       
         b. a trolley rolling in one direction on said main track;  
       
       
         c. a weighing track section bridging the division in said main track;  
       
       
         d. a scale being able to measure the weight on said weighing track section;  
       
       
         e. a transition support section between said main track and said weighing track section, said rolling of said trolley in said one direction defining an entrance end and a discharge end of said transition support section and an entrance end of said weighing track section, said entrance end of said transition support section being rockingly supported on a part of said main track, said discharge end of said transition support section being formed to engage and to be supported by said entrance end of said weighing track section; and  
       
       
         f. a spring biasing said discharge end of said transition support section away from said weighing track section until the weight of said trolley on said transition support section overcomes said spring bias. 
       
     
     
       16. The system of  claim 15 , wherein said entrance end of said transport section pivots about a pivot line not further in said one direction than vertically below the entrance end of said transition support section. 
     
     
       17. The system of  claim 15  in which a primary transport system is positioned to engage said trolley to move said trolley along said main track and over said weighing track section. 
     
     
       18. The system of  claim 17  in which said primary transport system includes a second track parallel to but spaced above said main track, an arm movably mounted on said second track, and a powered chain engaging said arm to pull said arm along said second track, said arm being engagable with said trolley to transmit motion of said arm to said trolley. 
     
     
       19. The system of  claim 17  in which an auxiliary transport system is engagable with said trolley to move said trolley along said weighing track section at a linear speed slightly greater than the motion along said main track. 
     
     
       20. The system of  claim 19  in which said auxiliary transport system includes a motive unit, and an auxiliary chain driven by said motive unit, said auxiliary chain being engagable with said trolley to move said trolley at said slightly greater lineal speed. 
     
     
       21. The system of  claim 20  in which said motive unit includes a constantly running motor, and a clutch selectively transferring power from said motor to said auxiliary chain, said clutch being operable by a switch in reaction to the passage of said trolley. 
     
     
       22. A system for weighing a load on a trolley comprising: 
       
         a. a divided main track;  
       
       
         b. a plurality of trolleys rolling in one direction on said main track;  
       
       
         c. a weighing track section bridging the division in said main track;  
       
       
         d. a scale being able to measure the weight on said weighing track section;  
       
       
         e. a primary transport system positioned to engage said plurality of trolleys to move said trolleys along said main track; and  
       
       
         f. an auxiliary transport system engagable with an individual one of said plurality of trolleys to move said individual trolley along said weighing track section at a linear speed slightly greater than the motion along said main track so as to disengage said individual trolley form said primary transport system while said individual trolley is on said weighing track section. 
       
     
     
       23. The system of  claim 22  in which said auxiliary transport system includes a motive unit and an auxiliary chain driven by said motive unit, said auxiliary chain being engagable with said trolley to move said trolley at said slightly greater lineal speed. 
     
     
       24. The system of  claim 23  in which said motive unit includes a constantly running motor, and a clutch selectively transferring power from said motor to said auxiliary chain, said clutch being operable by a switch in reaction to the passage of said trolley. 
     
     
       25. The system of  claim 22 , further comprising a transition support section between said main track and said weighing track section, said rolling of said trolley in said one direction defining an entrance end and a discharge end of said transition support section and an entrance end of said weighing track section, said entrance end of said transition support section being connected to said main track and pivotable with respect to said main track, said discharge end of said transition support section being formed to engage and to be supported by said entrance end of said weighing track section. 
     
     
       26. The system of  claim 25  wherein said transition support section is pivotable with respect to said main track section about a pivot line not further in said one direction than vertically below the entrance end of said transition support section. 
     
     
       27. The system of  claim 25 , further comprising a spring biasing said discharge end of said transition support section away from said weighing track section until the weight of said trolley on said transition support section overcomes said spring bias.