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Nathan Manufacturing, Inc. is a division of Micro Precision Group which manufactures Airchime, Ltd. train horns mainly for North America. It is one of two major train horn manufacturers in the United States, with Leslie Controls, Inc. being the other. A K5LA (K-5LA) Horn on top of a Coaster San Diego Cabcar #2310.
An air horn consists of a flaring metal or plastic horn or trumpet (called the "bell") attached to a small air chamber containing a metal reed or diaphragm in the throat of the horn. Compressed air flows from an inlet line through a narrow opening past the reed or diaphragm, causing it to vibrate, which creates sound waves. The flaring horn ...
Diagram of a typical locomotive air horn power chamber, showing operation. Train horns are operated by compressed air, typically 125–140 psi (8.6–9.7 bar), and fed from a locomotive main air reservoir. When the engineer opens the horn valve, air flows through a supply line into the power chamber at the horn's base (diagram, right).
Leslie-Tyfon horns became the standard on most American railroads. [5] Leslie's horns were the most popular locomotive horns, and the standard for GM Electro-Motive Division models. Later, Leslie introduced the Type S Supertyfon, with three- and five-chime versions. The three-chime S3L was B, D#, A. Leslie sold more horns than competitor Nathan ...
Conch shell (if played like a trumpet) 423.111.2 With mouthpiece. 423.112 Side-blown. 423.12 Tubular trumpets. 423.121 End-blown trumpets - The mouth-hole faces the axis of the trumpet. 423.121.1 End-blown straight trumpets - The tube is neither curved nor folded. 423.121.11 Without mouthpiece. Didgeridoo; 423.121.12 With mouthpiece. Trembita
The horns became an issue within the past few years. At a Nov. 27 promotion ceremony, the horns were blown so loudly that nothing else could be heard, another police officer said.
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