Anti-friction rollers: which turns most easily?
Three roller arrangements a, b, c compared for ease of motion
The page compares three arrangements of anti-friction rollers, drawn as clusters of rollers and balls held within square frames, with a single wheel in a frame at lower right. The arrangements are lettered a, b and c, and the note asks which will be of easier motion, and by how much - a study of friction between rolling bodies. The caption is written in mirror script beneath the drawings.
On this page
Three roller-and-ball bearing assemblies
The sheet shows clusters of rollers and balls set within square frames: an upper group encloses a roller marked with a caret, a lower group pairs two balls, and at left a triangle of three balls is drawn; a single wheel seated in a frame sits at lower right. These are the anti-friction rollers named in the note.
Which arrangement moves most easily?
The caption labels the arrangements a, b and c and asks which will be of easier motion, and by how much. The question is one of friction between rolling bodies.