cradler

noun

1. An agricultural worker who uses a cradle (a kind of broad scythe).
2. One who or that which cradles.

   “For use in a nursery for cradling a baby to sleep, a baby cradler comprising, in combination, a stand embodying a mobile base, uprights attached to and rising perpendicularly from the base and having axially aligned bearings, […]”

   “[…] this practice offers infants the soothing sounds of the cradler's heartbeat […]”