The second finger (third digit) has the most literal meaning of all. Less commonly referred to as the long or tall finger, the digitus medius manus sits in the center of the hand, right between the digitus secondus manus and the ring finger. How the middle finger became an offensive gesture is another story altogether.
To see how the pump works, look at the drawing below. The pump consists of a small diameter pipe (called the piston) inserted into a larger diameter pipe (called the cylinder). The drawing shows the pump at two points during its operation. The top drawing shows air being drawn into the pipe by pulling out the piston. The bottom drawing shows air exiting the pipe when the piston is pushed back in. At the right end of the pipe is a commercially bought one-way valve.
Instructions. Locate the small latch near where the plastic hose connects to the body of the vacuum. Pinch the latch and pull the door open. Remove the vacuum bag by its rigid, cardboard head. Discard the bag if it's full.Close the vacuum bag door and pull the plastic hose from the vacuum cleaner.Pull the long, rigid section of the vacuum hose into three parts: the handle, middle section, and base.Roll up the flexible section of the vacuum hose. Tie it with string to keep it from unfurling.nstructions. Locate the small latch near where the plastic hose connects to the body of the vacuum. Pinch the latch and pull the door open. Remove the vacuum bag by its rigid, cardboard head. Discard the bag if it's full.