Abstract: An articulated battery-powered electric tractor includes front and rear frame members which are pivotally connected for movement about a substantially vertical axis. A hydraulically-actuated articulation apparatus pivots the front and rear frame members with respect to each other. Wheels support the frame members for travel over the ground. A power-take-off shaft is mounted to the front frame member and is used for driving implements. Electric energy is stored in batteries which are mounted to the rear frame member. The first electric motor is mounted to the rear frame member and is used to drive the tractor wheels. A second electric motor is mounted to the front frame member and is used to drive the power-take-off shaft and the hydraulic articulation apparatus.

Abstract: The apparatus of this invention more positively controls liquid feed and solid (grain) feed consumption by animals in a simple economical and efficient manner, while minimizing contamination and wastage problems. Basically, the invention comprises in combination (1) a lick wheel rotatably mounted in an enclosed liquid feed container, with a portion of the circumference of the liquid wheel being exposed to the animal to be fed, (2) a means for adjusting the amount of lick wheel surface exposed to the animal to be fed, to thereby control the amount of liquid feed consumed by the animal per tongue lick, (3) means for discharging solid feed to the animal in an amount proportional to the amount of rotation of the lick wheel to obtain thereby a fixed ratio of solid to liquid feed, to be fed to the animal, and (4) means for varying the solid feed discharge independently of the amount of rotation of the lick wheel so as to increase or decrease the fixed ratio of solid to liquid feed fed to the animal.