The word "rawlbolt" is a type of mechanical fastener used to affix objects to concrete, brick, or other hard surfaces. Its spelling can be somewhat tricky. The pronunciation is /ˈrɔːlbəʊlt/ with the first syllable sounding like "raw" and the second "l" being pronounced with a silent "b." The "b" at the end is also silent. This word is often misspelled as "rawl bolt" or "rawl-bolt," so it's important to remember the correct spelling and pronunciation to avoid confusion.
A rawlbolt is a type of mechanical fastener commonly used to secure objects to walls or other solid structures. It consists of a metal sleeve with a central threaded hole and a tapered end. The rawlbolt is typically made of steel or other durable materials.
To install a rawlbolt, a hole is drilled into the wall using a drill bit of appropriate size. The rawlbolt is then inserted into the hole, with the tapered end first. As the bolt is tightened, the tapered end expands, pressing against the walls of the hole and creating a secure connection. This expansion allows the rawlbolt to distribute the load over a larger area, making it capable of supporting heavy objects.
Rawlbolts are often used for fixing items such as shelves, handrails, or fixtures to masonry or concrete walls. They are designed to provide a strong and reliable anchor point that can withstand considerable tension and shear forces. The threaded hole in the center of the rawlbolt allows for the attachment of bolts or screws to hold the object securely in place.
Rawlbolts are favored for their versatility, ease of installation, and high load-bearing capacity. They are frequently used in construction, engineering, and DIY projects where a strong and durable fastening solution is required.
The word "rawlbolt" is believed to be a combination of the words "rawl" and "bolt".
- "Rawl" is derived from the name of its inventor, John Joseph Rawlings. He developed the concept of expanding anchors used to secure objects to walls or structures in the early 20th century. The term "rawl" became associated with this type of anchor, which expanded when tightened to provide a secure hold.
- "Bolt" refers to a threaded fastener, typically with a head, used to join objects together.
Combining these two terms, "rawl" and "bolt", resulted in the word "rawlbolt" to signify a specific type of anchor fastening device.