Self-correcting weighing machine and method

• US 3,108,647 A
• Filed: 10/31/1961
• Issued: 10/29/1963
• Est. Priority Date: 10/31/1961
• Status: Expired due to Term

• Current Assignee: Albert D. Harmon, James C. Petrea, William H. Drake
• Original Assignee: Albert D. Harmon, James C. Petrea, William H. Drake
• Inventors: Harmon, Albert D., Drake, William H., Petrea, James C.
• Application Number:
  US04/148,994
• Time in Patent Office: 728 Days
• US Class Current: 177/1
• CPC Class Codes: B65B 1/32 by weighing check-weighing of filled containers or receptacles B65B1/46
• CPC Class Codes: G01G 13/00 Weighing apparatus with automatic feed or discharge for weighing-out batches of material for weighing a continuous stream G01G11/00; check-weighing G01G15/00; for fluids G01G17/04; apportioning by weight materials to be mixed G01G19/22; combinatorial weighing G01G19/387
• CPC Class Codes: G01G 19/32 using two or more weighing apparatus

Claims

1. THE METHOD OF FORMING EQUAL PREDETERMINED-WEIGHT CHARGES OF FLUENT MATERIAL, COMPRISING THE STEPS OF:

SEQUENTIALLY MOVING A PLURALITY OF MATERIAL WEIGHING DEVICES AROUND A CLOSED PATH THROUGH A PLURALITY OF FIXED STATIONS;

MOVING SAID DEVICES THROUGH AT LEAST A FIRST ONE OF SAID STATIONS AT A UNIFORM RATE;

CONTINUOUSLY DIRECTING A UNIFORM BULK STREAM OF MATERIAL FROM A BULK SUPPLY INTO SAID WEIGHING DEVICES WHILE AT SAID FIRST ONE OF SAID STATIONS AND AT A UNIFORM RATE WHEREBY EQUAL BULK CHARGES ARE DEPOSITED IN EACH OF SAID WEIGHING DEVICED;

DETECTING WHETHER THE WEIGHT OF MATERIAL IN EACH OF SAID WEIGHING DEVICES IS UNDERWEIGHT OR AT LEAST FULL WEIGHT AS IT PASSES EACH OF SECOND AND THIRD STATIONS;

FEEDING A DRIBBLE STREAM OF MATERIAL, BETWEEN SAID SECOND AND THIRD STATIONS, INTO EACH WEIGHING DEVICE WHOSE CHARGE IS UNDERWEIGHT WHEN IT PASSES SAID SECOND STATION;

CHANGING ONE OF SAID UNIFORM RATES TO DECREASE THE SIZE OF SAID BULK CHARGES IN RESPONSE TO PASSAGE OF CHARGES OF AT LEAST FULL WEIGHT PAST SAID SECOND STATION, AND TO INCREASE THE SIZE OF SAID BULK CHARGE IN RESPONSE TO PASSAGE OF UNDER WEIGHT CHARGES PAST SAID THIRD STATION.