公开(公告)号：US3710132A

公开(公告)日：1973-01-09

申请号：US3710132D

申请日：1971-09-03

申请人： SALUTATI G

发明人： SALUTATI G

IPC分类号： G04C13/02 ,  G04C11/04

CPC分类号： G04C13/02 ,  Y10T307/50

摘要： A time centralizing apparatus, such as used in railroad installations, includes a line section having a plurality of stations each having a repeated panel. A pilot generator at one end of the line section transmits synchronizing electric pulses to the station nearest thereto, with the repeater panel of each station being adapted to synchronize clocks or other local servo devices and to transmit, to the next succeeding station, the sequence of pulses received thereby. A second or auxiliary generator at the opposite end of the line section is operable, responsive to non-arrival of pulses from the pilot generator, to transmit synchronizing electric pulses in the opposite direction along the line station to synchronize the cutoff stations. A respective reversing relay at each repeater panel normally conditions the associated panel to receipt of pulses from the pilot generator, and respective means at each repeater panel is operable, responsive to non-arrival of pulses from the pilot generator, to operate the reversing relay to condition the associated repeater panel to receipt of pulses from the second or auxiliary generator. A first time-responsive micro-relay at each station is maintained energized by a condenser which is charged by pulses received from the pilot generator. A second timeresponsive micro-relay is provided and maintained energized by a condenser which is charged by pulses received from the second or auxiliary generator, and thus is normally deenergized. Upon nonarrival of pulses from the pilot generator, the condensor of the first relay looses its charge and the relay is deenergized to close an energizing circuit for the operating coil of the reversing relay, this energizing circuit being closed through a contact of the second relay. The reversing relay is thus operated. Upon restoration of pulses from the pilot generator, the auxiliary generator causes to transmit pulses. This results in discharge of the condensor associated with the second microrelay, so that this second micro-relay is deenergized and opens the energizing circuit for the reversing relay. The latter thus is restored to a ''''normal'''' position in which it cuts off receipt of pulses from the second or auxiliary generator, and the first relay is energized, by charging of its condenser by pulses from the pilot generator, to open its contact included in the energizing circuit for the operating winding or coil of the reversing relay. A feature of the invention is that each station has its own local source of potential which is preferably supplied from a battery charged through a rectifier from the usual lighting circuit.