pinch bar
Học thuậtThân thiện
Definition
Noun: A pinch bar is a specialized lever tool. Its defining feature is a pointed projection that acts as the fulcrum (the pivot point). It is primarily designed and used to roll or move heavy cylindrical objects, such as wheels or pipes, by applying leverage.
Usage
The term pinch bar is used specifically to refer to this type of tool in contexts like construction, mechanics, and heavy material handling. * Mechanics use a pinch bar to maneuver a truck's tire into position. * To move the heavy pipe, the worker inserted the pinch bar underneath it and applied pressure.
Advanced Usage
- Technical Context: In engineering or rigging, a pinch bar is distinguished from other pry bars or crowbars by its specific fulcrum design, optimized for rolling rather than just prying or lifting.
Variants and Related Words
- Pry Bar / Crowbar: General terms for lever tools used for prying things open or apart. A pinch bar is a specific type of pry bar.
- Lever: The simple machine upon which the pinch bar is based.
- Fulcrum: The pivot point, which on a pinch bar is the pointed projection.
Synonyms
- Rolling lever
- Tire iron (in specific automotive contexts for manipulating tires, though a tire iron is often a different, socketed tool)
Related Phrases
- To bar / To pry: The action performed with the tool.
- He used the pinch bar to pry the timber loose before rolling it.
Noun
- a lever with a pointed projection that serves as a fulcrum; used to roll heavy wheels