Hoffmann (Professor), 1839-1919., Plate, Adrian, inscriber., Harry Houdini Collection (Library of Congress) · New York : E.P. Dutton & Co. ; London : George Routledge & Sons, 1904. · leaf 62
32 Later Magic and 34, the former representing the interior of the box with the trap closed, the latter the trap itself, open. The flap is attached, by two hinges, aa, to the … Fic. 34. under surface of the lid, the crosspiece bb, which is screwed to the flap, precluding any possibility of its rising too high. The upward pressure necessary to keep it in position is afforded by the tension of a rubber band, b, on each side, slipped over the heads of two ordinary…
