arm semaphore

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• Semaphore line — This article is about the communication system using towers with pivoting shutters. For other uses, see Semaphore (disambiguation). For the now closed railway in Adelaide, Australia, see Semaphore railway line, Adelaide. A Chappe telegraph at… …   Wikipedia

• semaphore — /ˈsɛməfɔ / (say semuhfaw) noun 1. an apparatus for conveying information by means of signals. 2. a system of signalling by hand, in which a flag is held in each hand at arm s length in various positions. –verb (semaphored, semaphoring) –verb (t)… …  

• semaphore — n. & v. n. 1 Mil. etc. a system of sending messages by holding the arms or two flags in certain positions according to an alphabetic code. 2 a signalling apparatus consisting of a post with a movable arm or arms, lanterns, etc., for use (esp. on… …   Useful english dictionary

• Railway semaphore signal — One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted arm . Semaphore signals were patented in the early 1840s by… …   Wikipedia

• Flag semaphore — is a system for conveying information at a distance by means of visual signals with hand held flags, rods, disks, paddles, or occasionally bare or gloved hands. Information is encoded by the position of the flags; it is read when the flag is in a …   Wikipedia

• Chappe, Claude — ▪ French engineer and clergyman born Dec. 25, 1763, Brûlon, Fr. died Jan. 23, 1805, Paris       French engineer and cleric who converted an old idea into a reality by inventing the semaphore visual telegraph.       His brother Ignace Chappe… …   Universalium

• Summit Railway Station — Infobox Station name=Summit type=New Zealand Government Railways Department regional rail image size= image caption= address= coordinates= coord|41|8|41.29|S|175|11|48.93|E|type:railwaystation region:NZ line=Wairarapa Line other= structure=… …   Wikipedia

• Kaitoke Railway Station — Infobox Station name=Kaitoke type=New Zealand Government Railways Department regional rail image size= image caption=One of the private dwellings now located on the former Kaitoke station precinct. address=Station Drive, Kaitoke coordinates=… …   Wikipedia

• Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… …   Wikipedia

• Australian railway signalling — Just as the railways of Australia has suffered issues from incompatible rail gauges, the different states have tended to go their own way regarding railway signalling practice.New South WalesThe signalling system in New South Wales consists… …   Wikipedia

• UK railway signalling — The railway signalling systems used across the majority of the United Kingdom rail network use lineside signals to advise the driver of the status of the section of track ahead. Most lineside signals are in colour light form, but a significant… …   Wikipedia