Modern Magic: A Practical Treatise on the Art of Conjuring
Professor Hoffmann466The apparatus in this case consists of three japanned tin cones, about ten inches in height by five at the base, and each having a brass knob at the top--and an ornamental vase of tin or zinc, standing about the same height as the cones, and having a simple metal cover, or top. Of the cones (all of which are open at the bottom), two are hollow throughout, but the third has a flap or moveable partition halfway down, inclosing the upper half of the internal space. This flap works on a hinge, and is kept shut by a little catch, which is withdrawn by pressure on a little button outside the cone, when the flap drops down, and lets fall whatever has been placed in the enclosed space. (See Fig. 164.) The cone is prepared for the trick by filling this space with rice, and closing the flap; and the three cones are then placed in a row on the performer’s table, the prepared one being in the middle. The vase (see Fig. 165) is constructed as follows:--Its depth inside is less by about an inch than its depth outside, leaving, therefore, between its true and false bottoms, an empty space, a. A circular hole is cut in the inner or false bottom, but this hole, in the normal condition of the vase, is kept closed by a circular disc of metal, b, exactly fitting it. This disc is soldered upon an upright wire rod, passing through the foot of the apparatus, and terminating in another disc, c, somewhat smaller in size. Round this rod is a spiral spring, whose action tends to press it down, and thereby to keep the disc or valve normally closed, though it rises, and thereby opens the valve (as shown by the dotted lines in the figure), whenever upward pressure is applied to c. The face of the upper disc, b, is slightly concave, corresponding with the rest of the interior of the vase. The vase is prepared for the trick by placing an orange in it, and in this condition it is brought forward and placed on the table by the performer or his assistant. A small paper bag full of rice is brought in at the same time, and completes the preparations.

