text: Thomas Edison patronized a prototype of these machines called the Mauch Chunk.
full_question: Thomas Edison patronized a prototype of these machines called the Mauch Chunk. Layers of laminated wood are retrofitted with steel in the "i"-box technique developed by Rocky Mountain Construction for these machines. Stress-minimizing innovations to these machines included the introduction of clothoid loops and moving the axis of rotation to chest level in the heartline roll configuration. Arrow Dynamics introduced tubular steel to these machines in a prototype installed at Disneyland known as the Matterhorn. Lift hills and loops are often features of, for 10 points, what amusement park attractions?
first_sentence: Thomas Edison patronized a prototype of these machines called the Mauch Chunk.