GB321779A - Improvements in weighing scales - Google Patents

Abstract

321,779. Dehn, F. B., (Mills Novelty Co.). Oct. 2, 1928. Indicating-mechanism.-A weighing-scale, particularly of the coin-freed type, is provided with a weighing beam pivoted at one end and yieldingly suported at the other end, means engaging the beam between its ends for actuating the beam in one direction upon application of weight to the scale, and a cam device in engagement with the beam and controlled thereby, the cam device in its turn controlling the weight-indicating means' of the scale. The load on the platform draws down a bar 14 bearing upon a knife-edge 16 carried by a beam 17. The beam is fulcrumed at its right-hand end (not shown) and is coupled at its other end 22 to a weighing spring 24. Carried by the beam 17, upon a pivot 51, is a lever 50 bearing a roller 49 and retained by a spring 52 against an adjusting screw 53. The roller 49 co-operates with a curved surface 48 forming part of a segmental rack 44 pivoted on a pin 45. The segmental rack, when liberated by a coin, descends under the influence of gravity and rotates a pinion 42 secured to the indicator spindle 29. A suspended weight 57 takes up back-lash. The indicating pointer 26 is driven from the spindle 29 by an arrangement of lugs maintained in contact by a spring. The surface 48 is curved so as to give equally-spaced graduations on the dial. The position of the curved surface may be adjusted by inserting a. wrench in holes 89, 90 and bending the part 87 about a neck-portion 88. The zero position of the pointer may be adjusted by means of the screw 53. A stop plate 84 adjusted by a screw 85 limits the return movement of the segment 44.