Abstract: A vibrator baseplate for use in a seismic signal transducer system has a bottom plate with a dome centrally located thereon. A pair of partial domes overlap the central dome on opposite sides thereof. Top plates are attached to the partial domes, which are also attached to the bottom plate. Internal rib stiffeners are provided within each dome and gusset members extend between the partial domes and the top plates. Means are provided to connect the baseplate to the seismic signal transducer system. Alternatively, the baseplate comprises a bottom plate with an elongate eccentric dome attached thereto.

Abstract: A gated, cage-like enclosure device adapted to receive, confine and quickly release a steer or a calf and especially constructed for use in the performance of certain rodeo contests, such as, by way of example, those known as bulldogging, steer-roping, and calf-roping. The enclosure device has an improved lever and link mechanism for readily opening and closing the exit gates and holding the exit gates locked when in closed position. The enclosure device also has adjustable side walls for accommodating animals of different sizes and in addition means for operating an entrance gate with greater ease than has been possible with prior art devices.