When you open the deck of your player, you’ll see two protruding tubular pieces of plastic right in the middle of the slot you hook the cassette on to play it, also known as the drive.
Less than half an inch long, its tubular body has a foot at one end and a mouth at the other.
No tubular-pneumatic action is entirely satisfactory when the distance between the keys and the organ is great.
In 1898 the organ was thoroughly rebuilt with tubular pneumatic action in place of the Barker levers.
Surely therefore to him belongs the credit of having invented and perfected the tubular boiler and surface condenser.
In this specimen the tubular cavity of the stalactite is still open.
The device consists of a part of a barrel inverted and set over the fountain, and a tubular lantern.