gate-spring

Updated: May 17, 2025

Then he drove tight the wedges at each end of the hub, so straining the sinews tightly about the arm of the trap. Thus, as the boys readily saw, a great force was exerted when the arm of the trap was pulled back. "That is what they call 'torsion, I think," said Rob. "It is like a gate-spring which pushes hard when you twist it.

Emerson Hough - The Young Alaskans