JUNE 7.] THE NEW ZEALAND GAZETTE. 1103

charged, substantially as specified. (47.) The combination with two or more filters or other receptacles through which liquid is successively passed, of means for actuating the whole of the valves governing the supply of liquid thereto and its discharge therefrom by a single set of actuating-gear, a certain amount of slack motion being given to the connection of some of the valves, substantially as and for the purpose specified. (48.) The combination with a filter or other receptacle for use in the treatment of sewage or other liquids, of a discharge pipe or passage therefrom, and means for aerating the liquid from such filter or receptacle as it passes from or through such discharge pipe or passage, substantially as and for the purpose specified. (49.) The combination with the discharge pipe or passage from a filter or other receptacle, of an end-piece provided with holes or perforations through which the liquid will be forced to pass in the form of spray, substantially as and for the purpose specified. (50.) The combination with the discharge pipe or passage from a filter or other receptacle of air-inlet pipes or tubes opening from the outer air into such discharge pipe or passage, so that the liquid passing through the latter will draw air into and mix it with such liquid, substantially as and for the purpose specified.

(Specification, £2 10s.; drawings, £2 2s.)

No. 12625.—18th May, 1900.—WILLIAM PARKER, of Victoria Buildings, 80, Swanston Street, Melbourne, Victoria, Civil and Hydraulic Engineer (nominee of Donald Cameron, of Sylvan Road, Pennsylvania, Exeter, Civil Engineer; Frederick James Commin, of 7, Bedford Circus, Exeter, Fellow of the Institute of Surveyors; and Arthur John Martin, of Bradninch House, Exeter, Civil Engineer, all in England). The generation of gas for lighting, heating, and power purposes from sewage or other decaying organic matter, and improvements in tanks for the purification of sewage and other liquids.

Claims.—(1.) The utilisation of gas generated in covered tanks from sewage or other decaying organic matter, substantially as specified. (2.) The combination of a covered tank for receiving sewage or other decaying organic matter with a gas-holder or gas-holders for receiving and storing the gas generated from the sewage, substantially as specified. (3.) The combination of a covered tank for receiving sewage or other decaying organic matter and one or more gas-holders for receiving and storing the gas generated, with means for returning gas into the tank to admit of the fall of the level of the liquid in the latter, substantially as specified. (4.) The combination with a receptacle containing sewage or other decaying organic matter from which gas is generated, of two chambers, one in free communication with the receptacle and the second communicating with the first through a small aperture, and floats placed in such chambers and connected to valves so that the valves to which they are connected will be operated by the differences in level consequent on the rise and fall of the liquid in the receptacle, substantially as and for the purpose specified. (5.) The combination of a receptacle for receiving sewage or other decaying organic matter, and two gas-holders in communication therewith through pipes controlled by valves operated by the rise and fall of the level of the liquid in the receptacle, so that when one valve is opened gas will pass from the receptacle to one gas-holder, while when the other valve is opened gas will pass from the second gas-holder to the receptacle so as to admit of the fall of the liquid in the latter, substantially as specified. (6.) The combination of a receptacle for receiving sewage or other decaying organic matter and a gas-holder connected therewith, and valves operated by the rise and fall of the level of the liquid in the receptacle, whereby water or other liquid is allowed to flow into or out of a vessel mounted on the gas-holder, so as to vary the pressure of the latter on the contained gas, substantially as specified. (7.) The construction of a tank for the treatment of sewage or other liquids with one or more decks or floors intermediate between the top and bottom of the tank, substantially as and for the purpose specified. (8.) The construction of a covered tank for the treatment of sewage or other liquids with one or more floors intermediate between the top and bottom of the tank, substantially as and for the purpose specified. (9.) The construction of a tank for the treatment of sewage or other liquids with one or more floors intermediate between the top and bottom of the tank, forming two or more spaces through which the liquid shall pass in succession, substantially as and for the purpose specified. (10.) The construction of a tank for the treatment of sewage or other liquids with one or more floors intermediate between the top and bottom of the tank, and also with a depressed portion or sump to receive matter deposited from the liquid, substantially as and for the purpose specified. (11.) The combination with a covered tank, in which gas is generated from sewage or other decaying organic matter, of two or more outlets opening at different levels, the lower ones of which may be closed so as to force the liquid to rise to a higher level, and so create a pressure in the tank by which the gas may be expelled from the latter, substantially as specified. (12.) The combination of a covered tank, in which gas is generated from sewage or other decaying organic matter, with a pipe leading from the upper part thereof for conveying away the gas generated, a submerged inlet, and two or more submerged outlets opening at different levels, so that when desired, by closing the lower outlet or outlets, the level of the liquid will be caused to rise, and so create a pressure in the tank to expel the gas, substantially as specified. (13.) The combination of a covered tank in which gas is generated from sewage or other decaying organic matter, and a chamber in communication therewith having an outlet for the liquid which is capable of adjustment by means of a float or floats so as to be at a constant level with respect to the liquid in the tank, substantially as specified. (14.) The combination of a covered tank in which gas is generated from sewage or other decaying organic matter, and a chamber in communication therewith having an outlet for the liquid in the form of a siphon, the outer end of which forms the outlet from the chamber, and the height of which in relation to the level of the liquid in the chamber is rendered practically constant by means of a float or floats in such chamber, or in another chamber in communication therewith, such float or floats being under a cover or covers which are in communication with the upper part of the tank, substantially as specified.

(Specification, 11s. 6d.; drawings, 13s.)

No. 12626.—18th May, 1900.—WILLIAM PARKER, of Victoria Buildings, 80, Swanston Street, Melbourne, Victoria, Civil and Hydraulic Engineer (nominee of Donald Cameron, of Sylvan Road, Pennsylvania, Exeter, Civil Engineer; Frederick James Commin, of 7, Bedford Circus, Exeter, Fellow of the Institute of Surveyors; and Arthur John Martin, of Bradninch House, Exeter, Civil Engineer, all in England). Self-acting valves for regulating the discharge of sewage into tidal waters.

Claims.—(1.) The improved self-acting valve consisting in a bucket with a small opening in or near the bottom for the admission and escape of liquid, such bucket being suspended from one end of a lever within a chamber in which such liquid rises and falls around the bucket, while the discharge-valve itself is suspended from the opposite end of the lever, all substantially as specified. (2.) A bucket or vessel suspended within a space within which liquid rises and falls, and having a contracted orifice through which liquid may enter or leave the bucket, for the purpose of causing the bucket to rise or fall after the rise or fall of the liquid outside it. (3.) The improved self-acting valve consisting in a bucket with a small opening in or near the bottom for the admission and escape of liquid, such bucket being suspended from one end of a lever within a chamber in which such liquid rises and falls round the bucket, while the discharge-valve itself is suspended from the opposite end of the lever, in combination with a catch for holding the lever in the position it occupies when the discharge-valve is open until such catch is released by the descent of a vessel to which a measured flow of liquid is gradually supplied as soon as such discharge-valve opens, all substantially as specified. (4.) The improved self-acting valve consisting in a bucket with a small opening in or near the bottom for the admission of liquid, such bucket being suspended from one end of a lever within a chamber in which such liquid rises and falls round the bucket, while the discharge-valve itself is suspended from the opposite end of the lever, in combination with a catch for holding the lever in the position it occupies when the discharge-valve is open until such catch is released by the descent of a vessel to which a measured flow of liquid is gradually supplied as soon as such discharge-valve opens, the bucket having a valve which is opened as soon as the catch moves to the position to hold the discharge-valve open, and the vessel having a valve which is opened as soon as the discharge-valve closes, all substantially as specified. (5.) The improved self-acting valve consisting in a stationary vessel having an opening at or near the bottom, and placed in a chamber in which a liquid rises and falls, and in a tube leading from the top of the vessel and passing under a bell, the lower edge of which dips into a liquid, such bell being suspended from a lever to the opposite end of which is suspended a valve, substantially as specified. (6.) A regulator consisting in an inverted bell having its lower edge immersed in liquid, and having a pipe terminating under it, substantially as specified. (7.) The improved self-acting valve consisting in a bucket suspended from one end of a lever to the other end of which a discharge-valve is suspended, in combination with a stationary vessel having an opening at or near the bottom, and placed in a chamber in which a liquid rises and falls,