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  2. Magnetic Signal Company - Wikipedia

    en.wikipedia.org/wiki/Magnetic_Signal_Company

    The Magnetic Signal Company was an American company based in Los Angeles, California, focused on railway signalling. The company was the manufacturer of the ubiquitous "Magnetic Flagman" wigwag railroad crossing (or level crossing ) signal, seen all over California and the western states.

  3. Wigwag (railroad) - Wikipedia

    en.wikipedia.org/wiki/Wigwag_(railroad)

    A Magnetic flagman wigwag signal in use in southern Oregon, June 2007. Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled a train's approach.

  4. Wigwag (flag signals) - Wikipedia

    en.wikipedia.org/wiki/Wigwag_(flag_signals)

    Davis opposed the creation of the signal officer post when it came before congress; he wanted to use the signaling system but feared the creation of the signal officer post would lead to the creation of a new department (the future Signal Corps). Davis's objections were ignored and Myer was made signal officer and promoted to major in June 1860 ...

  5. Union Switch & Signal - Wikipedia

    en.wikipedia.org/wiki/Union_Switch_&_Signal

    Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment, systems and services. The company was acquired by Ansaldo STS (from 2015, Hitachi Rail STS ) in 1988, [ 1 ] operating as a wholly-owned company until January 2009, when US&S was renamed ...

  6. Point Richmond, Richmond, California - Wikipedia

    en.wikipedia.org/wiki/Point_Richmond,_Richmond...

    The wig wag signals, while no longer operating (newer gates, red lights and bells have been installed at the crossing), are one of only a handful still in existence nationwide. The neighborhood is divided by a ridge, which separates it into a "Bay side" and a "town side." Many houses, which include historic Victorians, offer a view of the bay ...

  7. Griswold Signal Company - Wikipedia

    en.wikipedia.org/wiki/Griswold_Signal_Company

    The firm purchased Los Angeles–based Magnetic Signal Company in the late 1940s and moved production to Minneapolis. Magnetic Signal is the company credited with the invention of the wigwag grade crossing signal once common throughout Southern California. "Railroad Accessories Corporation" (RACO) merged with Griswold Signal Company in 1964.

  8. North American railroad signals - Wikipedia

    en.wikipedia.org/.../North_American_railroad_signals

    The first signals employed on an American railroad were a system of flags used on the Newcastle and Frenchtown Turnpike and Rail Road in the 1830s. The railroad then developed a more effective system consisting of wooden balls, painted red, white or black, and hoisted up or down a pole on a rope-and-pulley system.

  9. Flag signals - Wikipedia

    en.wikipedia.org/wiki/Flag_signals

    A typical US Signal Corps guidon features wig-wag flags. In the 1850s, U.S. Army Major Albert J. Myer, a surgeon by training, developed a system using left or right movements of a flag (or torch or lantern at night). Myer's system used a single flag, waved back and forth in a binary code conceptually similar to the Morse code of dots and dashes ...