Official Gazette of the United States Patent Office Volume 178 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...to the wheels of the vehicle, means for progressively weakening the shunt field of the motor to increase the speed, and means for automatically restoring the full strength of such field when the wheels are entirely deprived of driving power. 1. A machine of the class described, including in combination means for holding the work, means for punching a hole through the web, means for slitting the web, and for bending down a portion thereof adjoining said hole, means for bending outwardly the slitted portion of the web adjacent to said hole, means adapted to enter said hole and move laterally therein to bend outwardly the head, means for bending back the bent-down portion of the web, mechanism for operating said means successively, adapted when started to perform one series of operations. 2. A machine of the class described, including in combination means for holding the work, means for punching a hole through the web, a shearing and bending punch for simultaneously slitting and bending down the web adjoining said hole, means adapted to enter said hole to bend outwardly the head, means for bending back the bent-down portion of the web, and mechanism for operating said means successively, adapted when started to perform one series of operations. 3. A machine of the class described, including in combination a clamp for holding the work stationary, means for punching a hole through the web, means for slitting the web and for bending outwardly the slitted portion thereof adjacent to said hole, means for bending outwardly the head adjacent to said hole, and automatic mechanism for bringing said means successively to the same point and for operating them to perform said operations upon the work adapted when started to perform one series of operations. 4. A machine o...