Hopper feeder (1), of which comprise a hopper (2) with a sloping front face (2.1) and lateral (2.2, 2.3) and rear (2.4) surfaces that are part of an outer shell (3) with parallelepiped shape, whose front face between said sides (2.2, 2.3) has a sill (4) in the lower part and an open area in the remaining upper part, the upper end (5) of the front face being coincident with the end upper (5) of the inclined face (2.1) and, a top loading opening of the hopper (2), a trough (6) in the lower part thereof and, a gate (7) for protecting the trough (6), characterized in that the protection door (7) of the trough (6) is formed by a flat laminar body located in the open area of the front face of the housing (3), comprising a first (7.1) and a second end (7.2) opposite, means for fastening the first end (7.1) to the upper end (5) of said front face, where the door a (7) of protection has a first vertical position and a second position inclined towards the trough (6) and, means for fixing the first position of the protection door (7) located at said second end (7.2), being the length between the first and second ends (7.1, 7.2) of the door (7) less than the length of the open area, such that in the first position there is a clearance distance (8) between the second end (7.2) of the door (7) and the upper end (4.1) of the sill (4). (Machine-translation by Google Translate, not legally binding)1. Comedero tolva (1), de los que comprenden una tolva (2) con una cara inclinada (2.1) frontal y unas superficies laterales (2.2, 2.3) y dorsal (2.4) que forman parte de una carcasa (3) exterior con forma de paralelepípedo, cuya cara frontal entre dichos laterales (2.2, 2.3) presenta un antepecho (4) en la parte inferior y una zona abierta en la parte superior restante, siendo el extremo superior (5) de la cara frontal coincidente con el extremo superior (5) de la cara inclinada (2.1) y, una abertura superior de carga de la tolva (2), un comedero (6) en la parte inferior de la misma y, un
