Abstract: A forced air circulation heating unit is formed of a U-shaped conduit for placement on the floor of a fireplace and a blower unit including a fan mounted in an insulating housing for forcing air through the conduit to be heated in the fireplace and discharged into a room. The housing has an interior lining of heat and sound insulating material such that the blower unit can be positioned within the fireplace while protecting the fan from heat and reducing noise from the fan. Jets are provided on the conduit to direct streams of air along legs of the conduit toward a base or heating chamber joining the legs in order to force air toward the center of the base and underneath fuel resting on the floor of the fireplace thereby reducing carbon monoxide, facilitating the starting of fires and reducing smoking.

Abstract: A forced air circulation heating unit is formed of a U-shaped conduit placed on the floor of the fireplace and a fan forcing air through the conduit to be heated in the fireplace and projected into the room. Jets are provided on the conduit to direct streams of air from legs of the conduit toward a base joining the legs in order to completely burn fuel thereby reducing carbon monoxide, to facilitate starting of a fire and to reduce smoking. The base of the conduit has an increased cross-sectional flow of air and the jet streams cooperate with the base to assure that the hottest part of the fire is produced by coals on and adjacent the base thereby increasing heat obtained from the unit and saving fuel.

Abstract: Air heating and circulating apparatus adapted to be positioned on the floor of a fireplace to produce heat pumping action without requiring a blower includes a base pipe defining a primary heating chamber and an inlet leg for supplying air thereto, a hot air discharge pipe defining a secondary heating chamber disposed above the primary heating chamber and an outlet leg for discharging heated air into a room, and a plurality of support pipes mounting the hot air discharge pipe above the base pipe and establishing communication between the primary and secondary heating chambers. The hot air discharge pipe is upwardly inclined from the secondary heating chamber to the outlet leg and the support pipes are arranged at an angle to the vertical such that air heated in the primary heating chamber rises in the apparatus to be provided with a horizontal velocity component for discharge through the outlet leg.

Abstract: A tablet package for use in chronologically dispensing tablets includes a sheet of material having pockets therein for receiving tablets, a frangible closure layer secured to the sheet of material to enclose the tablets and a plurality of time related indicia disposed on the closure layer associated with each tablet and aligned with the pockets such that dispensing of a tablet ruptures the closure layer to obliterate the indicia associated with that tablet. The tablet package is particularly useful with a tablet dispenser formed of a housing including a body having a dispensing opening therein and a cover pivotally connected with the body and carrying an ejector tab aligned with the dispensing opening, the tablet package being disposed in the body.

Abstract: A single ligament specimen is used to test the tensile properties in the short transverse direction of metal plate. A method of testing the specimen includes holding the specimen on one side of the ligament stationary and applying force to the other side of the specimen to elongate the ligament, and apparatus for implementing the method includes a fixture, a stationary clamp in the fixture, a movable clamp slidably mounted in the fixture, a load cell for measuring applied force to the movable clamp to elongate the ligament of the specimen, and a displacement transducer for measuring elongation.

Abstract: A floor-ceiling air circulating device includes a base adapted to be supported on the floor of a room, a duct assembly extending vertically from the base and defining a flow path between an upper outlet adjacent the ceiling of the room and a lower inlet adjacent the floor of the room and a flow path between an upper inlet near the ceiling and a lower outlet near the floor, and a fan associated with each flow path and housed in the base to stabilize the device. One of the fans draws air from the floor and discharges the air at the ceiling via one flow path and the other fan draws air from the ceiling via the other flow path and discharges the air at the floor such that the air drawn from the floor is replaced with air drawn from the ceiling and vice versa to thereby circulate the air at the floor and at the ceiling and reduce temperature stratification in the room.

Abstract: Pipe swaging apparatus includes a swaging fluid motor for moving a swage die toward a pipe clamping assembly including a stationary bottom clamping plate and a movable top clamping plate and a clamp operating fluid motor mounted beneath the bottom clamping plate and having a piston rod coupled with the top clamping plate to permit automatic operation of the pipe clamping assembly preferably simultaneously with operation of the swaging fluid motor.