Abstract: A method for synchronizing time in an Ethernet-based network having a master network subscriber and a slave network subscriber includes sending out a first telegram via the master network subscriber, where the slave subscriber receives the first telegram at a first receipt time value of a local system time and stores the first receipt time value. The method can also include reading out the first receipt time value via the master subscriber, sending out a second telegram by the master subscriber, where the slave subscriber receives the second telegram at a second receipt time value of the local system time and stores the second receipt time value, and reading out the second receipt time value via the master network subscriber. A speed parameter of the local system time can be calculated from the receipt time values via the master network subscriber, and transmitted to the slave subscriber.

Abstract: This invention provides an improved machine for finishing the edges of glass or other brittle materials. The machine is distinguished by its few moving parts, and its ease of maintenance. The edge-finishing machine includes a main conveyor section including two toothed main belts that grip and convey the glass or other material to be finished past grinding or polishing wheels, or other means for finishing the edges of the material. These main conveyor belts are synchronously driven, each by a separate motor or other power transmission unit. The main conveyor section of the machine also includes means to tension the main belts, preferably including non-rotating returns made from durable, low-friction material such as ultra-high molecular weight plastic.