Duffner & Kimberly

Q: I bought this metal and wood object at an estate sale advertised on line last year. Two conical forms, one with a cover at the apex and the other without, are mounted on a rectangular piece of stained wood. Suspended between the two cones is a removable basket. All the metal pieces have a uniform hammered finish. Stamped into the underside of the basket is the Duffner & Kimberly hallmark,  “DK Co.” It appears to be for smoking, but the finishes don’t look as if they’ve been subjected to hot ashes. Any assistance is greatly welcomed.