Abstract: Exemplary embodiments of the present invention would provide an exemplary vibration isolation and seismic restraint apparatus that would comprise: an exemplary structural member comprising: counterposed threaded holes; counterposed layered threaded force-transfer bosses, wherein each of the counterposed layered threaded force-transfer bosses would comprise a threaded hole aligned with a corresponding counterposed threaded hole in said underlying (bottom) member. The exemplary structural member would further comprise: counterposed threaded studs, wherein each of the counterposed threaded studs would be threaded through corresponding threaded holes in the corresponding layered threaded force-transfer boss and corresponding threaded holes in the underlying (bottom) member. The exemplary structural member would further comprise a spring resting on, or attached to, a position on the structural member between the counterposed threaded studs.

Abstract: An upper member to which a machine or other equipment piece to be protected is securable is supported directly or indirectly upon one or more resilient support columns, like coil springs. The resilient support columns are supported from a lower member which is adapted to be fixed to the load supporting surface for the equipment. Downwardly extending looping surfaces secured to the upper member define open or closed loops about transverse horizontal restraint bolts secured in pairs of transversely separated jaws rising from the lower member at each end of the member. The looping surfaces and the restraint bolts serve to limit relative motion in the transverse and longitudinal directions between the upper and lower members. Shock cushions about each bolt and between the looping surfaces and the jaws further limit relative motion.

Abstract: A rotatable wheel on a mobile frame carries radially extending pairs of movable, opposed crop-gripping arms which are spring-loaded toward each other. Brackets on each face of the wheel pivotably secure the arms. A roller on each arm moves onto and out of engagement with a cam on the frame with each rotation of the wheel, opening and closing the arms. Preferably the brackets, springs and rollers have quickly defeasible attachment hardward for ease in replacing worn parts, like a readily accessible removable pin securing each arm spring in a cavity in the arm, and rollers having shafts with indents in which a spring-loaded lock removably lodges. In one embodiment a lone threaded member secures each bracket and also affords a base locator for the arm spring. A bracket is removable with arms still attached for ease in maintenance with access to the threaded member through the spring cavity.

Abstract: One or more domed valve closure members are operable to open and close ports in the side walls of irrigation channels. Each closure member is cantilevered by a semi-flexible arm from a frame that has a pivot point lying in a plane substantially coincident with the plane of the sealing surface of the valve. A pneumatic bellows, which may be remotely controlled, exerts pressure to close the closure member against the sealing surface of the wall about the port. An adjustable limit stop fixes the degree of opening of the closure member as it swings arcuately away from the valve port to open. A manual control lever with an adjustable limit stop and an over-center locking arrangement replaces or supplements the pneumatic closure arrangement.