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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7337642 | Roll-former apparatus with rapid-adjust sweep box A computer controlled roll-forming apparatus is adapted to provide a repeating pattern of different longitudinal shapes to a continuous beam “on the fly” during the roll-forming process. A sweep station on the apparatus includes a primary bending roller tangenti... | 03/04/2008 |
| 7325489 | Process for controlling torque in a calendering system A method for controlling a calendering system having a first roll and a second roll is disclosed. The first roll has a first roll torque controller and a first roll speed controller. An exemplary method comprises the steps of: (a) setting said first roll at a desire... | 02/05/2008 |
| 7225656 | Process for forming a workpiece and rolling machine In the transverse wedge rolling machine as claimed in the invention the drive motor is a permanent magnet motor, especially a torque motor. Furthermore the rotational speed of the rollers is controlled depending on their rotary position. ... | 06/05/2007 |
| 7086260 | Method and device for controlling the thickness of a rolled product The invention relates to a method and a device for controlling the final thickness of a rolled product (B) at the outlet of a rolling mill including at least two roll stands (1–5) operating in tandem and associated with a general speed control system of the... | 08/08/2006 |
| 6915673 | Method of rolling worm gear and the worm gear A worm is formed by rolling to reduce the number of processing steps while ensuring the worm accuracy satisfactorily. A work material is positioned between a first rolling die (100) and a second rolling die (101) by rotation of the rolling dies and a s... | 07/12/2005 |
| 6912883 | Load measuring system for a thread rolling machine and operating method therefor A thread rolling machine forming a threaded member from a workpiece includes a die, a device for rotating the die, a device for generating a load applied to the die in a workpiece-feeding direction, a member that deforms under the applied load during a thread rollin... | 07/05/2005 |
| 6418767 | Round die type form rolling apparatus A round die type form rolling apparatus comprises: a pair of die moving blocks 15a, 15b rotatably supporting a pair of round dies 12a, 12b; four beam shafts 19 disposed around the rolling position of a work 33 being rolled by the round dies 12a, 12b and e... | 07/16/2002 |
| 6301946 | Strip coiling method In order to prevent a preceding strip from being oversupplied on a delivery side of a coiling pinch rolls and to prevent a leading end of the following material from being over supplied on an entrance side of the coiling pinch rolls, to provide a strip co... | 10/16/2001 |
| 6276183 | Method to reduce and eliminate vibrations in a rolling stand and relative device Method and device to reduce and eliminate vibrations in a rolling stand for plane rolled products comprising working rolls associated with by motor a kinematic chain, there being included nozzles to deliver a mixture of water and lubricant to the surface ... | 08/21/2001 |
| 6205829 | Method of regulating tension/compression in a multi-frame hot rolling mill, and a corresponding control system The value of the rolling torque is measured at each frame through which a metal product passes, and the measurement is performed at the moment when said product reaches the following frame, at which point the frame at which the measurement is performed is... | 03/27/2001 |
| 6199476 | Roll machine and process for operating the same A roll machine is provided. A plurality of rolls are disposed in a stack to define a plurality of nips therebetween adapted to treat a material web. At least two of the plurality of rolls are driven rolls. A drive control commonly controls the driven roll... | 03/13/2001 |
| 6089069 | Apparatus and method for influencing the frictional conditions between and upper roll and a lower roll of a roll stand An apparatus and a method for influencing the frictional conditions between an upper roll and a lower roll of a roll stand of a hot-rolling train for wide strip or a cold-rolling train for strip. The apparatus includes a spraying device arranged at the en... | 07/18/2000 |
| 5806357 | System and method for rolling tapered slabs A method and a device are provided for rolling a slab, in particular a slab whose thickness varies over its length, using at least two roll stands with a substantially constant and preferably low tension being maintained in the slab between the first and ... | 09/15/1998 |
| 4893489 | Drive system for a bending machine An improved bending machine with three rollers which may be driven at different speeds and/or with differing torques. A control system receives signals indicative of the position and speed of rotation of one or more of the rollers. The control system is c... | 01/16/1990 |
| 4586356 | Process and apparatus for preventing dissymmetry in rolled beams Process and apparatus for preventing defects in the symmetry of rolled H-beams or I-beams, i.e., a faulty position of their webs (4) in relation to their flanges (5), by correcting such defects in situ. The differential between the torques applied to the ... | 05/06/1986 |
| 4566299 | Control method and apparatus for rolling mill In a rolling mill having a pair of upper and lower work rolls, defining a pressure gap therebetween through which a material is passed to be rolled, a method and apparatus for controlling the rolling mill under the different peripheral-speed rolling opera... | 01/28/1986 |
| 4408470 | Procedure and device for rolling metals without stress The invention involves a procedure having three key stages: In the first stage, just prior to the introduction of the metal into stand (n+1), the value of the rolling torque in stand (n) is determined and recorded. Then, in the second stage, when the meta... | 10/11/1983 |
| 3962894 | Method of and apparatus for stretching a metal strip A metal strip is spanned over a plurality of rollers carried on a pair of frames. A single heavy-duty drive motor rotates a common drive shaft that is connected via bevel gearing to the sun gears of a plurality of planetary-gear assemblies each having its... | 06/15/1976 |
