Abstract: A damper assembly and method is provided for readily installing the damper assembly into an air duct of an existing air handling system to regulate air flow through the air duct. The damper assembly includes a mounting plate and a damper plate movably attached to the mounting plate. The mounting plate may include plurality of spaced apart through holes adjacent one end for securing the mounting plate to the air duct with a fastener. The damper assembly further includes means for movably attaching the damper plate to the mounting plate and means for adjusting the position of the damper plate within the air duct. The damper assembly is inserted into the outlet end of the air duct and the mounting plate is mounted with the damper plate positioned within the air duct. The position of the damper plate is adjusted to provide the desired air flow through the air duct.

Abstract: A central air handling and conditioning apparatus is provided with a by-pass dehumidifier for maintaining the temperature of the air in a plurality of enclosed spaces within a predetermined range and the relative humidity of the air below a predetermined value. The apparatus includes an air conditioner for regulating the temperature of the air, a dehumidification means for regulating the relative humidity of the air and an air handler for circulating the conditioned and dehumidified air through the enclosed spaces. The air conditioner is a conventional forced-air furnace or heater, an air-conditioner, an evaporative cooler, or a fan or blower for heating or cooling the air and returning the air to the enclosed spaces. The dehumidification means is a modified dehumidifier for removing water vapor from the air. The air handler includes a conventional air circulation means which may be, for example, the blower of the air conditioner.

Abstract: An air plenum system is disclosed which is adapted to distribute air from a central air plenum through a plurality of air duct lines, with a predetermined and readily adjustable air flow rate through each of the lines. A damper plate is pivotally mounted in each of the lines at a location sufficiently close to the outlet end of the line so as to permit a person to reach into the line through the outlet end, and manually pivot the damper plate to a desired setting. Also, the damper plate is mounted by a pair of rods which mount spring loaded washers which bear against the wall of the air duct line and provide a simple, reliable, and readily adjustable system for controlling the pivotal movement of the damper plate. An adjustable air diffuser is preferably mounted to cover the outlet end of each line.

Abstract: A hitch arrangement for use between a towing vehicle and a towed vehicle such as a trailer, particularly for stabilizing a generally upright load such as a motorcycle against tilting as the towing and towed vehicles move through a turn. The hitch includes an inextensible elongate pliable element and tie down members connecting the element and the load.

Abstract: A device for securing to a post, such as a swivel post, mounted on or carried by a firearm so as to enable a hunter climbing into a tree to suspend his firearm on successively higher tree limbs and thereby free his hands for climbing. The firearm hanger comprises a hook member for securing the firearm to a tree limb and a connector member affixed to one end of the hook member for detachably securing it to the post mounted on or carried by the firearm.

Abstract: A method for identifying the load characteristics of a centerfire firearm cartridge which has been loaded by a process including insertion of an unstruck primer into a primer pocket in the cartridge head and in which indicia identifying the load characteristics of the cartridge are imprinted onto the unstruck primer. The method is contemplated as being particularly useful with reloaded cartridges which are to be again reloaded subsequent to use.

Abstract: Apparatus for identifying the load characteristics of a centerfire firearm cartridge which has been loaded by a process including insertion of an unstruck primer into a primer pocket in the cartridge head and in which indicia identifying the load characteristics of the cartridge are imprinted onto the unstruck primer. The apparatus is contemplated as being particularly useful with reloaded cartridges which are to be again reloaded subsequent to use.