Flagpole mechanics in Austria: halyard, pulley, crank and arm

A flagpole is a simple machine: a line, a pulley, a few snap hooks. Whether the flag hangs neatly at the top, does not tangle and can be set at half-mast depends on details, however. The Austrian Armed Forces’ flag order describes them unusually precisely.

The halyard

The halyard runs as a loop from the base over the pulley in the truck and back down. The flag is attached with snap hooks to one strand. Pulling the other strand raises the flag; releasing it lowers it. At the base the line is tied off.

• External halyard: the line runs outside the pole and is tied off on a cleat. Simple and easy to maintain.
• Internal halyard: the line runs inside the pole, protected behind a lockable door, often with a counterweight. This makes unauthorised lowering harder and stops the line rattling. Fahnen Gärtner lists versions with internal halyard and a crank mechanism.

The Armed Forces’ flag order names a wire rope as the most suitable line, possibly plastic-coated against rust. Pulleys and guides sit on the side facing away from the wind where possible, because the flag then tangles less easily in the line.

The flag on the line

The flag is attached with at least two, preferably three snap hooks. With three, the wind pressure is spread over the whole height of the hem on the pole side, which according to the flag order leads to a considerably longer lifespan. The flag flies with its narrow side at right angles to the pole.

The “half-mast effect”

Sometimes a fully hoisted flag hangs visibly below the top, as if at half-mast. The Armed Forces’ flag order calls this the unsightly “half-mast effect” and gives two causes:

1. The upper pulley sits too low.
2. The tensioner of the wire rope sits above the flag.

In addition, the rope is fixed after hoisting so that the flag cannot slide down on its own.

Half-mast

At half-mast, the flag is lowered with the same halyard: first to the top, then slowly to half the height of the pole, and to take it down back to the top again. This only works with hoisted landscape flags. Banners, hanging flags and portrait flags are not set at half-mast under the Styrian flag guide. More in the guide to half-mast.

Arm and rotating truck

For banner flags, the pole carries an arm at the top on which the flag hangs spread out. An arm that rotates through 360 degrees turns with the wind, according to Fahnen Gärtner, so that the flag is visible whatever the wind direction and wraps less often. Trucks for free-flying flags also come in rotating versions.

Ground sleeve and hinge

At the base, the pole stands in a ground sleeve in the foundation or on a base plate. Some poles can be lowered on a hinge so that pulley and truck can be serviced on the ground. Without such a device, work on the truck is work at height. More in the guides to flagpole repair and flagpole accessories.