Abstract: A space heater is operable at a low cost by a small electric motor which rotates an elongated tubular cylinder rotor member on a vertical axis, within an elongated cylindrical outer stationary member, and outwardly of an upper convection chamber member and a lower metering chamber member at a clearance of about five thirty-second of an inch in the vertical, outer and inner angular chambers formed therebetween. A supply of heavy lubricant normally occupies the lower portion of the vertical, outer and inner annular chambers and the lower metering chamber member but rises to fill the vertical, outer annular chamber and overflow the elongated tubular cylinder rotor member and return through the vertical, inner annular chambers to the lower portion during rotation of the elongated tubular cylinder rotor member; and serving for through flow of the lubricant.

Abstract: A mechanism for translating rotation motion to linear motion utilizing a turret rotatable about a first axis carrying a crank shaft rotatable about a second axis parallel to but offset from the turret axis and carrying a crank arm which in turn carries a drive element having a third axis parallel to but offset from the first and second axes, the drive element contacting and driving a driven element guided for movement along a generally linear path upon the rotation of the turret between first and second generally diametrically opposite positions relative to the arc of rotation of the turret, a pair of cooperative abutment members for absorbing the momentum of a load driven by the driven element, one of the abutment members being carried by the turret and gearing meshingly interconnecting another of the abutment members and the crank shaft, the one abutment member being effective to contact and move the other abutment member upon the driving element moving contiguous the first and second positions, and a sprin