May 4.] THE NEW ZEALAND GAZETTE. 1513

ward and from the work, arranged to move the guide into contact with the work after the work has been engaged by the feed-point. (5.) For an in-seam shoe-sewing machine, the combination with a channel-guide that is adjustable transversely to the direction of feed of the work, of a movable gauge (for example, the arm 30) that can be moved by the operator into a definite position in proximity to the channel-guide so as to serve as an indicator when the operator is adjusting the said guide.

(Specification, 9s.)

No. 28124.—21st July, 1910.—UNITED SHOE MACHINERY COMPANY, of Paterson, in the State of New Jersey, United States of America, a corporation duly organized under the laws of said State of New Jersey, carrying on business as Shoe-machinery Manufacturers, and having a place of business at 205 Lincoln Street, Boston, Massachusetts, in said United States of America (assignees of John Locke Dow, of Melrose Highlands, Middlesex, Massachusetts aforesaid, Machinist). Improvements in or relating to shuttle-tension devices for lock-stitch sewing-machines.*

Claims.—(1.) A shuttle-tension device for sewing-machines having, in combination, a thread-supporting surface, a yielding thread-engaging member, and a yielding tension-adjusting member engaging the thread-engaging member and pressing it against the thread, the members being relatively adjustable at substantially right angles to the direction of pressure to change their point of engagement and vary the tension. (2.) A shuttle-tension device for sewing-machines having, in combination with a circular thread-case, a thread-engaging member extending about the periphery of the thread-case, and a tension-adjusting member also extending about the periphery of the thread-case and arranged to bear upon the thread-engaging member, said members being relatively adjustable about the periphery of the thread-case to vary the tension. (3.) A shuttle-tension device for sewing-machines having, in combination with a cylindrical thread-case having a peripheral groove, a thread-engaging member mounted in the groove, and a tension-adjusting member mounted in the groove and provided with a cam surface to bear on the thread-engaging member, with or without means for locking the tension-adjusting member in adjusted position.

[NOTE.—Here follow four other claims.]

(Specification, 6s. 9d.)

No. 28447.—15th September, 1910.—EDWARD RIPON SHIELD, of 116 Collins Street, Hobart, Tasmania, Australia, Fruit-grower. Improvements in and relating to apparatus for grading fruit and other like commodities.*

Extract from Specification.—The apparatus comprises a suitable frame in which is means for imparting rotary motion to a number of longitudinally disposed rollers or spindles arranged in pairs in such a manner that there will be a gradually widening interval between each member of a pair from the head towards the foot of the machine. Each member of a pair of rollers will, furthermore, rotate in a direction opposite to and away from the other, but not necessarily at the same rate of speed as its fellow. Arranged below the system of rollers is a canvas conveyor that is placed upon a number of transverse supports by means of which the canvas will be divided up into a convenient number of chutes.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 6s. 9d.)

No. 28699.—3rd November, 1910.—HENRY ISMAY MORALEE Ross, of 614 Castle Street, Dunedin, New Zealand, Heating and Ventilating Engineer. Improvements in double-current ventilation.*

Claims.—(1.) In an improved double-current system of ventilation including one or more apartments, the combination of a fresh-air inlet adapted to open automatically to admit air, a fresh-air inlet adapted to close automatically to oppose the exit of said air, and an automatic deflector for leading side currents into inlet-openings, with a foul-air outlet in communication with said inlets, similarly valved to oppose the ingress of air, and means for short-circuiting and simultaneously controlling said currents of air, all substantially as shown on the drawings and as set forth. (2.) In an improved double-current system of ventilation including one or more apartments, the combination of a plurality of fresh-air inlets, fitted with valves to automatically admit fresh air and automatically close to oppose the exit of same, an automatic deflector, by-pass valves fitted with weights or springs to return same to normal positions, and fresh-air distributing-boxes fitted with perforated fronts, with a foul-air outlet, and means for simultaneous control of the currents, all substantially as set forth. (3.) In an improved system of double-current ventilation including the combination of fresh-air inlets, with foul-air outlets fitted with a plurality of louvred openings of peculiar construction for deflecting outside air-currents away from same, thus creating a vacuum within the cowls or ventilators, causing an exhaust action in said ventilator, and also fitted with inclined planes within said ventilators to prevent down-draught or leakage, and gutters for conducting water outside of roof, all substantially as set forth. (4.) In an improved double-current system of ventilation, the combination of a plurality of deflecting-planes for inducing a current of foul air, an annular chamber having valved openings for admitting fresh air and directing the same to said apartments, all substantially as set forth.

(Specification, 6s. 9d.)

No. 28910.—19th December, 1910.—ALBERT EDWARD YOUNG, Engineer, of Christchurch, New Zealand, and GEORGE GORDON HOLMES, Jun., Farmer, of Pigeon Bay, New Zealand. Lawn-mower attachment.*

Claims.—(1.) The combination with a lawn-mower having a pair of laterally disposed carrying-wheels, of an auxiliary carrying-attachment comprising, in combination, a bracket member, a carrying-wheel revolvably mounted thereon, and a clamping-device by means of which said bracket member may be secured upon the front bar of the mower and by means of which the lateral position of the device thereon and the vertical height of the said carrying-wheel may be adjusted, substantially as and for the purpose indicated.

[NOTE.—Here follow two other claims.]

(Specification, 3s. 3d.)

No. 28957.—6th January, 1911.—MJOLKNINGSMASKIN AKTIEBOLAGET, a corporation existing under the laws of Sweden, and having its place of business at Hornsberg, Stockholm, Sweden, Manufacturers (assignees of Gustaf Dalen, Henrik von Celsing, and Magnus Storm, all of Hornsberg, aforesaid). Improvements in milking-machines.

Claims.—(1.) In milking-machines of the class described, a distributing-device for the air under pressure acting on the pistons connected with the reciprocating-plate and causing the forward motion of same, characterized by a cylindrical receptacle connected with the air-pressure conduit and communicating with the upper-pressure cylinder, and of a smaller cylinder in the said receptacle, communicating with the lower-pressure cylinder, whereby the air is admitted from the first cylinder to the second cylinder through an adjustable bullet valve, substantially as described. (2.) In milking-machines of the class described, an apparatus for automatically imparting a pulsatory motion alternately in opposite directions to the pressure-fluid flowing in constant direction from the pressure-tank through a conduit connected with the milking-apparatus, said pulsating-apparatus being inserted in the said conduit and comprising a movable block or body placed between the two connecting parts of the conduit and acting as a valve, which in one position places the two conduits in free communication, and in another position closes this communication and places the conduit in which the pulsatory motion is to be established in communication with an outlet-conduit, said block or body being moved in one direction by spring action and in the other direction by means of a piston or membrane influenced by the pressure in the conduit containing the pulsating-fluid. (3.) In milking-machines provided with a pulsating-apparatus as set forth in claim 2, the improvement that the block or body is retained in its end positions by aid of magnetic action, for the purpose of insuring it being suddenly carried over from the one to the other position.

(Specification, 8s. 9d.)