Abstract: Disclosed are embodiments of battery stacker machines, including z-fold stacker machines, configured to provide a rolling transfer of a battery layer so as to reduce scrubbing. In some embodiments, the layer is flexed onto an arcuate surface using a vacuum or other force. The arcuate surface is then rotated to release the layer at a desired transfer location. For instance, the desired transfer location may be on top of a stack or onto another arcuate gripper surface.

Abstract: A method has been discovered for the control of arthropod pests which comprises treating the pest with an effective amount of selected fluorocarbons.

Abstract: Apparatus for fighting fires within storage tanks includes a frame movably coupled to the lip of the storage tank. The frame includes rotatable members by which the frame may be moved around the lip of the storage tank. Attached to the frame is a holding device adapted to hold a fire extinguisher nozzle on the interior of the storage tank so as to direct fire extinguishing agents down the inside face of the storage tank. The apparatus may include a fire detector to detect the presence and location of the fire, propulsion means to automatically move the apparatus around the storage tank to a location adjacent to the fire source, and a storage tank for storing fire suppressing agents be used to extinguish the fire.

Abstract: A method and apparatus is provided for the continuous separation of oil from the refrigerant in a vapor compression refrigeration apparatus. The separation is accomplished by centrifuging the liquid refrigerant, while cooling the refrigerant to facilitate the separation of the oil. There is also provided an oil still for removing and recovering any refrigerant remaining in the separated oil, and a heat exchanger is provided for initially cooling the refrigerant prior to being centrifuged, and heating the refrigerant after being centrifuged.