GB197102A - Improvements in mechanism for indicating and recording overweight for use in combination with automatic weighing apparatus - Google Patents

Abstract

197,102. Avery, Ltd., W. & T., and Johnson, S. H. Feb. 28, 1922. Automatic-feed weighers.-An overweight recording device for use in combination with automatic weighing machines comprises a connection from the weigh-hopper of the machine to a pendulous resistant, the weight of which is formed with a curved face whereby a differential motion is communicated to a one-way recording mechanism through a weight-controlled linkage. As shown in the Figure, a pendulous resistant 8 has its short arm 7 connected through a rod 6 and slotted links 5 to a stud 4 projecting from the side of the weighhopper. A weighted lever 15 is connected by a link 14 to a roller 14<a> which bears against a curved face 12a on the pendulum weight 12. The movement of the roller is constrained by a second weighted lever 30. When the weight of the material in the weigh-hopper exceeds the correct weight, the excess is balanced by the pendulous resistant, the movement of which allows the roller 14a to rise and causes a corresponding movement of the lever 15. A pawl 17 on the lever 15 engages a ratchet wheel 18 connected through a wheel-train 19, 20, 21 to a pointer 23 indicating on a dial 22. A double arm 25 mounted on the spindle 16 of the ratchet wheel, and rotatable therewith, engages the spring end 26 of an arm 27 connected at its opposite end to the operative spindle 28 of a totalizing counter 29, the indication on which is thereby increased bv one unit for each half revolution of the ratchet wheel. The total overweight at any time is given by the sum of the indications on the totalizing counter and on the dial 22. The point at which the overweight apparatus takes effect may be adjusted by a set-screw 9 in the slotted link 5. A dash-pot 10 may be connected to the rod 6. Weights are inserted in a loading-box 11 for initially balancing the overweight apparatus.