Which type of scraper normally operates without the help of a pusher?

The elevating scraper is designed specifically to operate independently, without the assistance of a pusher. This type of scraper uses an elevating mechanism to load material from the ground directly into a bowl, which allows for efficient movement and self-loading capabilities.

Unlike other types of scrapers that might rely on a pusher to assist in loading materials—such as motorized scrapers which typically drag or push material—elevating scrapers effectively scoop up dirt or other materials by using a conveyor-like system. This capability makes them highly efficient for certain jobs, especially in tighter spaces where a pusher might have trouble maneuvering.

While wheel and tracked scrapers serve specific functions and have their advantages, they often utilize a pusher for enhanced loading efficiency, making them less autonomous compared to elevating scrapers. This design feature of the elevating scraper grants it a unique advantage in specific excavation and grading scenarios.