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.

The present invention provides for an automatic swinging device with a natural rhythm of the swinging motion that is designed and configured to be coupled to any desired apparatus that can be sat on and in which the user wishes to be swung automatically, if desired, and manually, when desired. The present invention is an apparatus that can be attached to any device so as to provide for a final product that not only provides an automatic swinging motion having natural rhythm, but also provides fo...

A swinging link mechanism for connecting a prime mover to a rigid trailer comprises an upper and lower opposed pairs of laterally spaced mountings, the lower pair for attachment to the prime mover and the upper pair for connection to the trailer. A swinging link pivotally connects each respective two opposed mountings. The two links are inclined toward one another. The spacing of the lower pair of mountings to be attached to the prime mover exceeds the spacing of the upper pair to be connected t...

The specification discloses linkage assemblies (16, 59) for effecting selective pivotal movement of hinged structures. The invention is particularly adapted for use with sectional chute assemblies of concrete mixers, either for moving adjacent chute sections between extended and retracted positions, or for swinging the entire chute assembly.

A dredging apparatus including a spud barge and a dredging barge. A hollow pivot sleeve is located at the stern of the dredging barge. A hydraulically extendable arm is mounted on the spud barge and is pivotally connected to the pivot sleeve. A large diameter bull ring is affixed to the pivot sleeve. A pair of cables connect to the bull ring and to a pair of power driven winches on the spud barge. The winding and unwinding of the cables around their winches swings the dredging barge about the pi...

A swinging bucket centrifuge rotor comprises a body that has a reference plane that extends generally perpendicular to a vertically extending axis of rotation. The body has at least one pair of confronting planar sidewalls each of which has a trunnion pin mounted thereon. Each trunnion pin has an axis therethrough that extends generally perpendicularly to the planar sidewall on which the pin is mounted. Each sidewall further has a generally cylindrical swinging bucket support surface thereon. Ea...

Antenna pods are located outboard of each wheel fairing on a C-130 aircraft, which pods are supported by truss members attached to the aircraft and pivotally affixed to an upper row of antenna lugs and two travelling nut jack screw units affixed to the aircraft and pivotally attached to two lower antenna lugs. When the jack screws are longitudinally extended the antenna pod is pivoted out of an operating position and into a maintenance position.

A golf club swinging guide is adapted for use on a golf club having a shaft and a head with a striking face. The guide includes a mount having a clamp for connecting the mount to a golf club generally above the head of the club. There is a vane pivotally connected to the mount. The vane is freely pivotal and responsive to movement of air so the vane visibly aligns itself in the direction the golf club is swung.

A swinging-sliding door for vehicles, particularly for passenger vehicles, includes two door leaves positioned outside and within the wall of the vehicle in a closed state. For the door, a driving device for operating the door leaves includes pivotable, roller carrying levers which swing the door leaves from the closed position into a ready-to-open position; in addition, the driving device exerts a reaction force onto the pivotable roller carrying levers which, in closed position, results in loc...

A swinging blade guard assembly for a motor driven saw blade movable from an upper at rest to a lower operational position is disclosed. An upper blade guard is fixed to a pivotally mounted supporting arm that carries the motor driven saw blade and upper blade guard. A lower swinging blade guard is pivotally mounted to the upper blade guard for fully covering the blade in its at rest position and for exposing the saw blade when moved to its operational position. The swinging blade guard assembly...