Abstract: A gas delivery apparatus which includes a vehicle fitted with multiple compressed gas cylinders, each provided with a free piston, along with a separate liquid reservoir cylinder, for sequentially displacing the gas located on one side of the free piston in each of the gas cylinders with liquid from the reservoir introduced on the opposite side of the free piston and relocating the free piston disposed in each gas cylinder by residual gas pressure.

Abstract: A sundial which is characterized by a selectively portable or permanent base and support bracket combination, which support bracket facilitates an angular movement for effecting latitude adjustment to the sun's path and includes a support bracket plate, a middle plate pivotally connected to the support bracket plate and a connecting plate pivotally attached to the middle plate, with a pair of semi-cylindrical dials secured to the connecting plate in oppositely-disposed relationship. Analemma adjustment for coordinating sundial time with "clock" time is facilitated by an adjustment lever which is pivotally attached to the connecting plate and the middle plate and is adjusted with respect to an analemma path inscribed on the connecting plate. Daylight savings time adjustment is also facilitated by pivoting the middle plate with respect to the support bracket plate and this adjustment also allows correction for location of the sundial within the time zone.

Abstract: A sundial which is characterized by a selectively portable or permanent base, a support plate hingedly connected to the base in adjustable angular relationship for effecting latitude adjustment to the sun's path and a connecting plate pivotally attached to the support plate, with a pair of semicylindrical dials secured to the connecting plate in oppositely-disposed relationship. A pair of gnomons are suspended outwardly of the concave dial curvatures, respectively, for casting a shadow on the dials and indicating the time of day and day of the year responsive to rotation of the earth and traversal of the shadow across the dials. Each gnomon is spherical in shape and is suspended in the center of a diameter of each of the dials and the connecting plate and dials are oriented at a selected angle with respect to the base, which angle is determined by the latitude at which the sundial is positioned.