Filling quantity regulating system in container filling apparatus

In a container filling apparatus comprising a plurality of charging cylinders arranged in a circle around a vertical main shaft so as to revolve thereabout and provided with respective pistons for pushing out the material supplied into said cylinders to fill respective containers, a limit adjusting mechanism provided for each of said charging cylinders and adapted for setting adjustably the limit end of the intake stroke of the piston in each charging cylinder, thereto to adjust the quantity of the material to be filled into each container, an actuating device for adjustably actuating said limit adjusting mechanism, and driving means for activating said actuating device thereby to cause adjustable operation of said limit adjusting mechanism, the improvement of said limit adjusting mechanism, said actuating device and said driving means:

• each of said limit adjusting mechanisms comprising a cam constituting a finely adjustable member and having a variable cam surface, a cam shaft fixed at one pat thereof to said cam, a worm wheel fixed to said cam shaft at another part thereof, a worm meshed with said worm wheel, a rotatable shaft fixed at one end coaxially to said worm, and a rotation transmitting wheel coaxially fixed to the other end of said rotatable shaft and having sprocket-like teeth, said rotatable shaft being rotatably supported by a structural part secured integrally with and revolving unitarily with the corresponding charging cylinder and said cam surface of said cam being coupled with the lower part of the piston rod secured to the piston of the charing cylinder;
• said actuating device comprising at least on pair of actuating members respectively disposed on opposite sides of the orbital path of revolution of said rotation transmitting wheel and adapted to be driven into engagement respectively with one sprocket-like tooth, thereby to turn said wheel respectively in a clockwise or counterclockwise direction by an angular displacement corresponding to one tooth thereof;
• and
• said driving means being adapted for driving said actuating members into or out of said engagement.

In a container filling apparatus comprising a plurality of charging cylinders arranged in a circle around a vertical main shaft so as to revolve thereabout and provided with respective pistons for pushing out the material supplied into said cylinders to fill respective containers, a limit adjusting mechanism provided for each of said charging cylinders and adapted for setting adjustably the limit end of the intake stroke of the piston in each charging cylinder, thereby to adjust the quantity of the material to be filled into each container, an actuating device for adjustably actuating said limit adjusting mechanism, and driving means for activating said actuating device thereby to cause adjustable operation of said limit adjusting mechanism, the improvement of said limit adjusting mechanism, said actuating device and said driving means:

• each of said limit adjusting mechanisms comprising a first block fixed to the lower end of the piston rod of the corresponding charging cylinder and having an inclined lower surface, a second block having an inclined upper surface adapted to abuttingly contact with said inclined surface of said first block and to set the lower limit of descent of said first block and, therefore, of said piston rod in accordance with the horizontal position of said second block, a horizontal threaded shaft screw-engaged with said second block and supported rotatably by a structural part secured integrally with and revolving unitarily with the corresponding charging cylinder, rotation of said shaft causing the second block to move horizontally, a worm wheel connected to and rotating with said threaded shaft, a worm meshed with said worm wheel, an adjusting shaft fixed coaxially at one end thereof to said worm, and a rotation transmitting wheel coaxially fixed to the other end of said adjusting shaft and having sprocket-like teeth, said adjusting shaft being rotatably supported by a structural part secured integrally with and revolving unitarily with the corresponding charging cylinder;
• said actuating device comprising at least one pair of actuating members respectively disposed on opposite sides of the orbital path of revolution of said rotation and adapted to be driven into engagement respectively with one sprocket-like tooth, thereby to turn said wheel respectively in a clockwise or counterclockwise direction by an angular displacement corresponding to one tooth thereof;
• and
• said driving means being adapted for driving said actuating member into or out of said engagement.