Abstract: A fluid dispenser has a cradle for holding a container of liquid to be agitated before dispensing in a downwardly inclined position towards the dispensing outlet and includes an arrangement for causing a wave-like motion to the contents of the container. The arrangement can include a rocking mechanism for the end of the cradle remote from the dispensing end or an arrangement for intermittently applying pressure to the wall of the container adjacent the dispensing end. The diminishing contents of the container may be compensated for.

Abstract: A fluid dispenser for dispensing beverages which include a drive device, a disturbing device and a holder for holding a container from which fluid is to be dispensed. The drive device and disturbing device operate to rock or agitate the holder to cause liquid in the container to mix with itself. This prevents the liquid from stratifying and from solids settling. Preferably the container is in the form of a collapsible bag which collapses as liquid is dispensed. An outlet from the container is controlled by a dispensing device.

Abstract: A solar heater with a collector and an insulating lid operated by water pressure means to cover the collector when the celestial radiation drops below a predetermined value and to uncover the collector when the celestial radiation rises above a predetermined value. The water pressure means may be manually operated or electrically by means of a solenoid type valve activated through one or more heat sensitive devices located near or on the heater.