Humpback
In the plumbing trade , a Hauerbuckel is a molded part made of sheet metal in the form of a hat to cover fastening holes in sheet metal covers of weathered components. In some areas also incorrectly roofing screws as Hauer mogul called because today they serve a similar purpose.
nature
Hauer's humps are small-format shaped sheet metal parts made from the material of the sheet to be fastened, usually made of zinc or copper sheet . They are as flat as possible and have an outwardly narrow, flat edge with which they are soldered onto the sheet metal to be fastened.
use
When sheet metal is fastened directly to wall or other components, the fastening element such as screw , rivet or wire loop creates a hole in the sheet metal cover. In the case of weathered components, measures are therefore required to prevent the ingress of water. If only screws with sealing rings or sealing rivets are used, the thermal changes in length of the fastened sheets and weathering can lead to leaks in the fastening area after some time. The rainproof cover of the fastening with a soldered-on Hauer's hump enables an enlarged sheet metal bore and thus a slight movement of the sheet despite direct fastening.
history
In earlier times, so-called ' roofing paper nails "(nails with a broad, flat head) were often used as the tusk humps, mostly galvanized . Wires were often attached to the tongues (or roofing paper nails) under the sheet metal to be fastened Nails hammered into the brick were fastened. Nails and wire were then plastered in. The fastenings with Hauerbuckel covers are only secure in the case of small thermal changes in length and thus with small-sized sheet metal used in the 1960s and are now predominantly replaced by fastenings with adhesive or indirect fastenings, whereby the term Hauerbuckel has also been preserved on special screws made of copper or other metals, which do not let rainwater through.
Individual evidence
- ↑ Central Association of Sanitary, Heating, Air Conditioning (ed.): Technical rules of the plumbing trade . Edition 10/98, p. 126