Abstract: A watering valve of a water feeder includes a casing fastened to an outlet pipe for connection to a water reservoir and having a gasket ring engaged in the top. A water stopper is engaged in the upper portion of the casing and includes a head engaged against the gasket ring, and a water nozzle engaged in the lower portion of the casing. The water stopper is disengaged from the gasket ring when the water nozzle is pushed upwards by a small animal, causing water to flow through the water stopper and to flow out of the water nozzle.

Abstract: A centering device for locating a center line of a workpiece to be aligned with the center line of a milling cutter along the direction of cut in a horizontal milling machine. The device comprises a centering pointer and an aligning fixture to be used in combination with a dial indicator. The centering pointer is mounted onto the aligning fixture adapted to be attached to the milling cutter in aligning the center lines, wherein the center line of the milling cutter along the direction of cut is represented by the centering pointer and the center line of the workpiece can be brought to coincide therewith.

Abstract: A centering device comprising a centering pointer and a centering block to be used in conjunction with a conventional dial indicator for locating the center of a workpiece and aligning the center of the workpiece with the center axis of the spindle of a manufacturing machine without the need of marking the workpiece prior to the set up of the workpiece for the cutting process. The centering pointer comprises a needle resiliently and slidably held in a hollow holder for mounting onto the spindle of a manufacturing machine such as a drill press and the like, the needle having a lever rigidly connected thereto for transmitting the movement to the lower point of the dial indicator.