Abstract: An apparatus for mechanically controlling the opening and closing of a gate hingedly mounted at the upper margin of a portal, leveraging the gate from a closed position to either a fully open position or a partially-open resting position. The gate opening function is controlled by a lever-handle actuated gate lifting assembly including a lift leverage bracket carrying a lift actuating rod engageable with a fulcrumatic gate pickup bracket lifting a lifting element of a gate attachment arm providing a hinged connection for the chute gate. The gate closing-catch function is controlled by a pivoting gate stop bracket carried on a second gate attachment arm; the gate stop bracket is biased to have a catch end ridable along an edge of a second riser mount for the second hinged connection for the gate, until the catch end seats or lodges in a closing-catch notch of the second riser mount.

Abstract: An apparatus for mechanically controlling the opening and closing of a gate hingedly mounted at the upper margin of a portal, leveraging the gate from a closed position to either a fully open position or a partially-open resting position. The gate opening function is controlled by a lever-handle actuated gate lifting assembly including a lift leverage bracket carrying a lift actuating rod engageable with a fulcrumatic gate pickup bracket lifting a lifting element of a gate attachment arm providing a hinged connection for the chute gate. The gate closing-catch function is controlled by a pivoting gate stop bracket carried on a second gate attachment arm; the gate stop bracket is biased to have a catch end ridable along an edge of a riser mount for the second hinged connection for the gate, until the catch end seats or lodges in a closing-catch notch of the riser mount.