Abstract: An adjustable manhole top which can be readily raised up or down in minutes to correct problems when the ground around it heaves. A cylindrical sleeve with a plurality of spaced elongated ribs extending longitudinally along an internal surface thereof, is adjustably seated by its ribs resting in notches at predetermined elevations on riser blocks upwardly extending from height adjustment rings resting on the support rim.

Abstract: An adjustable manhole top which can be readily raised up or down in minutes to correct problems when the ground around it heaves. A cylindrical sleeve with a plurality of spaced elongated shoulders extending longitudinally along an internal surface thereof, is adjustably seated about upwardly extending projections from a support rim. A lock, removably supported on the support rim, is provided with a height adjustment mechanism to support a corresponding shoulder on the sleeve, to secure the sleeve at a desired height.

Abstract: There is provided an improved combination oil and gas nozzle comprising a housing, a forward portion of which includes an enclosed chamber adjacent at least a part of a combustion zone, a gas inlet into said housing leading to a mixing chamber within said housing, an air inlet into said housing leading to said mixing chamber, a series of passages leading from said mixing chamber to a rearward portion of said combustion zone, an oil lance and nozzle extending through the rear portion of said housing and extending essentially centrally into said combustion zone downstream of the outlet of said series of passages, an oil inlet to said essentially annular chamber and an oil passage from said chamber to said oil nozzle. There is further provided a method of utilizing oil and gas in combination in such a nozzle.

Abstract: A fuel supply system for an internal combustion engine wherein liquid fuel, as from an automobile gas tank, is supplied to a vapor chamber to maintain a predetermined liquid fuel level in the base of said chamber and in such chamber is transformed into vapor and eventually fed to the engine's intake manifold. Ambient air is admitted to the vapor chamber by an adjustable inlet valve and as the air is drawn through the chamber on its way to the engine it entrains the fuel vapors in the desired fuel-air mixture. The vaporizing of the liquid is increased by an absorbent splash assembly so supported in the vapor chamber that at least a part of such assembly normally engages the liquid fuel.

Abstract: A coin wrapping device to assure the simple safe stacking and firm and secure wrapping of a roll of coins of selected common diameter having a housing incorporating an elongated cylindrical chamber including an arcuate trough of appropriate diameter and an arcuate hinged cover therefor, a manually rotatable shaft in the cover parallel with the chamber and a resilient friction roller on the shaft with part of its circumference projecting through an aperture in the cover into the chamber in spaced relation to said trough. The housing for the coin wrapping chamber is mounted on a base that provides also a flat work surface for preliminary folding of an end of a conventional paper wrapper prior to introducing the same to the wrapping chamber.