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<p>[QUOTE=&quot;Conder101, post: 1388473, member: 66&quot;]Frankly it looks like an alarm or warning device.&nbsp; You have a double bellows there attached to the horn.&nbsp; There is a foot pedal on the upper one.&nbsp; Pushing down on that would blow air through the horn making on tone and at the same time inflating the lower bellows.&nbsp; While the upper bellows re-expands filling with air, the spring below the lower bellows pushes the air out of it and through the horn making a second tone.&nbsp; Then the cycle repeats when you press the foot pedal again.[/QUOTE]</p><p><br /></p>

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