Abstract: A molded structure which may be placed within a tank such as an aquarium to provide separate land and water areas which are capable of providing realistic and healthy living environments for fish, amphibians and reptiles. Preferably, the structure is molded such that it simulates realistic land and water environments. For example, the water area preferably provides the cliff and cave-like areas preferred by aquatic life. On the other hand, the interface between the land and water portions is preferably sloped in portions to provide an amphibian friendly surface, while the land area may include depressions for the maintenance of plant life. In the preferred embodiment, the back and underside of the unit is hollow to incorporate a filter media, pump, heater, additional aeration device or any other such desired apparatus. In an especially preferred embodiment, small openings are provided along the base to allow water to be drawn through the gravel in front of the unit to provide additional filtration.

Abstract: A molded structure which may be placed within a tank such as an aquarium to provide separate land and water areas which are capable of providing realistic and healthy living environments for fish, amphibians and reptiles. Preferably, the structure is molded such that it simulates realistic land and water environments. For example, the water area preferably provides the cliff and cave-like areas preferred by aquatic life. On the other hand, the interface between the land and water portions is preferably sloped in portions to provide an amphibian friendly surface, while the land area may include depressions for the maintenance of plant life. In the preferred embodiment, the back and underside of the unit is hollow to incorporate a filter media, pump, heater, additional aeration device or any other such desired apparatus. In an especially preferred embodiment, small openings are provided along the base to allow water to be drawn through the gravel in front of the unit to provide additional filtration.

Abstract: An adjustable can conveyor comprises a fixed trackwork assembly and a moveable trackwork assembly. The fixed trackwork assembly includes at least two outer collars, a can guide track and two guide rails. The moveable trackwork assembly includes at least two inner collars, a can guide track and two guide rails. An interlocking mechanism is used to secure the two trackwork assemblies together such that a track able to convey can bodies is created. The locking mechanism is adjustable such that the conveyor may be set up to move cans of varying length. Because of the interlocking mechanism used, the moveable trackwork assembly is completely supported by the fixed trackwork assembly during adjustments. Further, the four guide rails associated with both trackwork assemblies may be rotated in such a manner that allows for adjusting the conveyor for cans of varying diameter.

Abstract: To permit ready exchange of the length of printed subject matter to be reproduced, particularly to make packaging cartons, the cut-off size of printing cylinders, as well as blanket cylinders of an offset machine is constructed, can be changed in this manner: The respective cylinders include a cylinder shaft (44, 45) on which a lightweight cylinder sleeve (3, 3a, 4, 4a) of different circumferential size can be placed.