Stonecatcher

The dirt and stones detached from the beets are deposited on the floor of the stonecatcher, or receiver, fixed to the back part of this machine, from which they are from time to time emptied out from below;

Source: wiktionary

According to the Scientific American (through whose courtesy the accompanying cuts are reproduced), the water flows through a six-inch steel casing into a “stonecatcher" (illustrated herewith), which arrests pebbles (some weighing twenty-two and one-half pounds), small boulders, and stones, which are shot out with force enough to damage the casing and machinery.

Source: wiktionary

In our experience, these holes let water in through the soles, and they are stonecatchers.

Source: wiktionary

But today, our self-righteousness, our fear, and our anger have caused even the Christians to hurl stones at the people who fall down, even when we know we should forgive or show compassion. I told the congregation that we can't simply watch that happen. I told them we have to be stonecatchers.

Source: wiktionary