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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.
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.
In 1901 US&S developed the first electro-pneumatic automatic train stop system for the Boston Elevated Railway. This system was later adopted by the New York City Subway and other transit systems. [12] In 1908 the company introduced an electrically controlled highway crossing gate. [13] In 1923 US&S developed the first inductive train control ...
Susan Nilson, Accredited Cat and Dog Training and Behavior Specialist and Owner/Founder of The Cat and Dog House, shares that research has suggested that dogs tend to wag their tails more to the ...
Wig wag (washing machines), a solenoid design used in some brands; Wigwag, the Canadian version of the English Curly Wurly bar; Wigwag, a tool used in watchmaking for polishing parts; WigWag, a Nottingham–based website development and communication company; Wig-wag, a tool used to stack sheets of rubber compound into boxes or onto pallets.
A dog trainer with the United States Navy, which primarily trains using positive reinforcement. [1] [2]Dog training is a kind of animal training, the application of behavior analysis which uses the environmental events of antecedents (trigger for a behavior) and consequences to modify the dog behavior, either for it to assist in specific activities or undertake particular tasks, or for it to ...