Foghorn, Pneumatic fog horn, painted black, the inside of the cup red, On the outer pipe the cup is at an angle of 90 as with a ventilation shaft. The pipe has two handles. The air chamber is formed by the outer pipe slid over a loose inner pipe, which is sealed at the bottom, the air pressure is obtained by pushing both pipes together, while when they are pulled out air is admitted into the chamber through a valve in the bottom of the inner pipe. The tone is obtained by a reed on a long conical inner pipe, which is mounted on the outer pipe inside the chamber. The horn is operated by moving the outer pipe up and down with two hands, while the inner pipe is held with one foot in a foot bracket at the bottom., Cornelis Schakel (mentioned on object), Amsterdam, c. 1870 - c. 1885, iron (metal), brass (alloy), copper (metal), paint (coating), l 137 cm bell: d 29 cm
Keywords:
Foghorn, Pneumatic fog horn, painted black, inside, cup red, outer pipe, cup, angle, 90, ventilation shaft, pipe, two handles, air chamber, formed, outer pipe slid, loose inner pipe, sealed, bottom, air pressure, obtained, pushing, pipes together, pulled out air, admitted, chamber, valve, inner pipe, tone, reed, long conical inner pipe, mounted, outer pipe inside, horn, operated, moving, outer pipe up, down, two hands, held, foot, foot bracket, Cornelis Schakel, mentioned, object, Amsterdam, c, 1870, 1885, iron, metal, brass, alloy, copper, paint, coating, l 137
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