Abstract: A device for checking the temperature within an enclosure when the temperature in the enclose is to be maintained within a range between to extreme values. The device includes a container having a transparent wall and two separate materials giving rise respectively to changes of state at the temperatures equal to the two extreme values, the materials being contained in a container such that detection of the respective states of the two materials can be determiner through the walls of the container.

Abstract: Self-contained device and method for determining the variations in temperature regulated temperature enclosures. The device consists of a container comprising a tank connected to a receptacle, the inner spaces of which communicate with one another through one or two ducts of reduced or constricted cross sections. Said container is formed at least partially, of a material allowing heat transfer with the exterior and contains an intially solidified material, the melting temperature thereof being constant and the total volume being less than or equal to the overall volume of the tank and duct element.

Abstract: The knives on the surface of a peeler and grater disc for a vegetable peeling machine are formed from portions of the disc and are integral therewith. The knives are arranged in generally spiral rows from the center of the disc. Upturned reinforcing lips formed from and integral with the disc are located adjacent slots in front of each individual knife. The lips and knives cooperate to define the knife cutting depths. A pair of radially extending ribs on the disc cooperate with spiral ribs along the walls of the peeling chamber to promote circulation and rotation of all the vegetables for uniform exposure of all sides of all the vegetables to the disc.