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Pipe with moveable lip

Koenig Acoustical · Physics

This pipe is the mouth-piece of a wooden organ pipe. At the top of the pipe is a wooden spout where air can be blown into the instrument, either by an experimenter, or using apparatus such as a windchest. On the front panel of the pipe is an opening where air flows out of the instrument to produce sound. At the bottom of the pipe is a moveable lip, made of a thin slab of pine. This piece of wood can be moved to vary the opening of the pipe. By closing the gap, the pitch emitted by the pipe rises.

Accession Number:

Alternative Name:

Primary Materials: Wood (pine)

Markings: Side panel: “RUDOLPH KOENIG A PARIS”

Dimensions (cm):

(Height = 3.5, Width = 6.4, Length = 28.2


The pipe was used to investigate the means of producing sound.

Condition: Good.

Associated Instruments:

Manufacturer: Rudolph Koenig, Paris

Date of Manufacture: 1870s


University of Toronto Physics Department

Additional Information and References:

Historical Notes: