Schmiereinrichtung fuer Maschinen,z.B.Werkzeugmaschinen

摘要

A machine control device for arresting the operation of a machine in response to an insufficient rate of lubricant flow in the machine lubrication system. A chamber interposed in the lubricant return circuit to the reservoir comprises a float for sensing the level of lubricant therein, an upper discharge port, and a lower discharge port of such size as to allow a flow equal to that necessary in the lubrication system to allow the machine to complete its cycle. A signal responsive to a predetermined position of the float announces the condition of insufficient rate of flow, and provides an input to an AND gate. The other input to the AND gate is provided by the machine control system at the end of a cycle, whereby the arresting of machine operation thereupon occurs.