Abstract:
This invention relates to a method of assemblying a piston compressor in which the crankshaft and cylinder bores have intersecting right angled axes. The piston and connecting rod assembly is provided with a universal joint therebetween and a bearing surface having a closed wall at the opposite end of the connecting rod. The piston-connecting rod assembly is initially inserted into the cylinder followed by introducing the crankshaft into the crankshaft bore. By utilizing the piston-connecting rod universal joint the connecting rod bearing can be maneuvered into a position for placing the bearing on the crankshaft. A bushing is then inserted between the connecting rod bearing and crankshaft.
Abstract:
The invention relates to a sliding vane type pump of the kind in which radially displaceable vanes bear against a running surface surrounding the impeller. In the prior art the running surface, which is off-set from the impeller axis, has a true circular shape. In this invention the running surface has a generally circular shape but portions on opposite sides thereof are formed as involutes of an imaginary constructional base circle. With this construction the radial displacement of a sliding vane when under load is minimized so as to effect a reduction of friction and wear.
Abstract:
The invention relates to a D.C.-fed regulated direct current voltage supply for feeding an inverted converter connected to a three phase motor. The voltage supply has current sensing means to which is connected voltage regulating means. The voltage regulating means is responsive to a maximum predetermined current value to reduce the voltage to prevent the current from exceeding the predetermined value. The voltage regulating means includes an SCR or equivalent which is opened and closed by impulses. The open and/or closed periods are of varying duration to prevent the current from exceeding the predetermined value.
Abstract:
The invention relates to a thermostat assembly of the type having an open ended casing which defines a chamber and has a piston and a deformable bag in the chamber, the piston being sheathed in the bag. The chamber is filled with a thermostatic liquid which exerts pressure to collapse the bag and force the piston out of the chamber when the liquid is heated. The bag and piston have biconvex shaped cross sections instead of circular cross sections as in the prior art.
Abstract:
The invention relates to an oil burner ignition system of the type having an electrically heatable silicon carbide incandescent resistor. Aging of the resistor causes the resistance to increase with a resulting drop in the power input. A capacitor is used in series with the resistor to compensate for the increase in resistance of the resistor as it ages. It is also found that the capacitor causes the resistor to become incandescent more rapidly.
Abstract:
THE INVENTION RELATES TO AIR TREATMENT EQUIPMENT FOR REMOVING IMPURITIES FROM THE AIR, PARTICULARLY SUBSTANCES HAVING AN ODOR OR TASTE AND BACTERIAL SPORES. THE EQUIPMENT INCLUDES A HEATING ELEMENT, MAINTAINED AT A HIGH TEMPERATURE, OVER WHICH THE AIR PASSES OR IS DIRECTED AND THIS CAUSES AIR BORNE PARTICLES TO BREAK DOWN INTO ODORLESS SUBSTANCES. THE EQUIPMENT INCLUDES A HEAT EXCHANGER ARRANGEMENT WHICH SERVES TO REDUCE THE TEMPERATURE OF THE HEATED AIR RETURNED TO THE ROOM OR SPACE FROM WHICH THE AIR WAS WITHDRAWN. THE HEATING ELEMENT OF THE HEATING UNIT IS MADE OE ELECTRICALLY CONDUCTING SILICON CARBIDE HAVING A THIN COATING OF CATALYST MATERIAL.
Abstract:
The invention relates to a pump assembly which may be utilized as a fuel oil pump and which has constructional features which minimize the possibility of air binding. The assembly has a rotating casing member in which pumping elements are housed and which is surrounded by a casing so as to form a suction chamber which surrounds the rotating casing member. The rotation of the casing member causes liquid in the suction chamber to also rotate and form a ring of liquid. The rotating casing member has an eccentrically positioned inlet which passes through the ring of liquid so formed once during each cycle of rotation and this insures the introduction of liquid, as distinguished from only air, into the inlet.
Abstract:
The invention is a pressostat assembly which includes two bellows, one inside the other, which have fluid communication. Both bellows are fixedly attached to a rod form of operating member and the outer bellows operates to impart a closing movement to the operating member if the inner bellows should develop a leak. The effective cross sectional area of the outer bellows is larger than that of the inner bellows. The rod form of operation member is provided with a passage for filling or evacuating a protective chamber surrounded by the protective bellows.