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AUTOMATIC RATCHET-TYPE COUNTER FOR A LOG CHAIN CONVEYER

Click to enlargeClick to enlarge Description

As log 2 is carried by chain conveyer 1, it lifts bracket 3 to which slide 4 is rigidly attached. Slide 4 moves along parallel guides 5 and carries roller 6 which rotates freely about axis A. When slide 4 is raised, weight 7, suspended by rope 8, descends and turns disk 9 counterclockwise. The rotation of disk 9 is transmitted by pawl 10 and ratchet wheel 11 to counter 12 which registers the sum of the diameters of the logs passing by the counter. Slide 4 also carries pawl 13 which turns ratchet wheel 14 in the upstroke of the slide, transmitting rotation to counter 15. This counter registers the number of logs passing by. As the log passes between fluted rollers 6 and 16, it rotates lower roller 16. This rotation is transmitted by gears 17 and 18 to counter 19 which registers the total number of running metres of the logs passing by. After each log has passed, roller 6, slide 4 and bracket 3 are returned by gravity to the initial position and, by means of rope 8, they return disk 9 to its initial position.
$2785$RG,FD$

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Documents: Gear mechanisms  [Streambook]
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