April 2.] THE NEW ZEALAND GAZETTE. 1095

of a semaphore-arm, the lower part of said rod having spiral springs located one upon each side of the point of connection of said rod with the bell-crank lever, substantially as specified. (3.) In apparatus for the purpose indicated, in combination, the alarm-bell mechanism comprising a weight carrying a bar having rack-teeth engaging with a pinion connected to one part of the clutch whereby said weight may be raised freely without interfering with the alarm mechanism, a train of spur-wheels and pinions connecting said clutch with a ratchet-wheel, and means whereby said ratchet-wheel operates the hammer of a bell, substantially as specified, and illustrated in the drawings. (4.) Means in signalling consisting of the parts constructed, arranged, and operating substantially as specified, and illustrated in the drawings.

(Specification, 4s. ; drawing, 3s.)

No. 22869.—22nd May, 1907.—GEORGE PERCY JENKINS, of Ayr, Queensland, Australia, Factory-manager. Improvements in means for cooling brine for dairy or other purposes.*

Claims.—(1.) In improvements in means for cooling brine, a header, with blind pipes extending downwards therefrom containing ammonia or other refrigerant, and in communication with the ammonia-circulation of the refrigerating plant, and provided with gauge-glass as described, and as illustrated in the drawing. (2.) Improvements in means for cooling brine, consisting of a header with blind pipes extending downwards therefrom containing ammonia or other refrigerant, and in communication with the ammonia-circulation of the refrigerating plant, and provided with a gauge-glass in combination with brine-carrying pipes enclosing and attached to such downwardly extending pipes as and for the purposes set forth, and as illustrated in the drawing.

(Specification, 2s. 9d. ; drawing, 1s.)

No. 22914.—29th May, 1907.—J. B. MACEWAN AND CO., LIMITED, a company duly incorporated under the Companies Act of New Zealand, and carrying on business at Customhouse Quay, Wellington, New Zealand, Merchants (the assignee of Thomas Humble, of Geelong, Victoria, Australia, Engineer). Improved combined cream-vat, cold-water tank, and cool-chamber.*

Claims.—(1.) For the purpose indicated, a tank divided by a partition into two compartments, one compartment containing water and the other forming a cool-chamber, a cream-vat dipping into the water, a removable lid closing the top of the cream-vat, a door in the cool-chamber, a pipe coil located between the lid of the tank and the ceiling of the cool-chamber, the said coil extending into the water in the other compartment, and a cooling or freezing medium circulating through the coil, substantially as set forth. (2.) The combination and arrangement of parts comprising the combined cream-vat, cold-water tank, and cool-chamber, substantially as and for the purposes set forth.

(Specification, 2s. 6d. ; drawing, 1s.)

No. 22954.—6th June, 1907.—EUSTACE JULIAN KEOGH, of 209 Toorak Road, South Yarra, Victoria, Australia, Surgeon (the nominee of Frederick John Corbett, of 95 Hope Street, South Yarra, Melbourne, Victoria, Australia). An improved system and apparatus for cleansing carpets, floors, walls, ceilings, and like fittings.*

Extract from Specification.—In this system I employ the force or power derived from any suitable water-service or source to exhaust air by any approved means, in such a manner as to produce a vacuum or partial vacuum, as may be required, for cleansing carpets, curtains, floors, walls, ceilings, furniture, and other like fittings, from dust and dirt. A vacuum may be produced by water-power in various ways, but although in this system I prefer to use an aspirator or ejector, I do not confine myself to any particular method of producing a vacuum or partial vacuum by means of water under pressure.

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

(Specification, 7s. 6d. ; drawing, 1s.)

No. 23050.—26th June, 1907.—JAMES LESLIE CAMPBELL, of Roebuck Street, West Adelaide, South Australia, Australia, Machinist. An improved machine for moulding plastic material.*

Claims.—(1.) A machine for moulding damp sand into cores, comprising a tubular body or “former” of uniform cross-section throughout its length, but having a feed-hopper over an opening in its upper portion, a reciprocable plunger provided with a vent-forming spike and movable within said tubular body, and means for operating said plunger, all mounted upon a suitable bed, substantially as described. (2.) A machine for moulding damp sand into cores, comprising, in combination with a suitable bed, (a) a tubular body or “former” secured to the bed, and having an internal cross-section uniform throughout its length, and of shape of the required length of core, and having a feed-hopper over an opening in its upper portion; (b) a reciprocable plunger within said tubular body, and having upon its forward or operative end a vent-forming spike; (c) means for operating said plunger, consisting preferably of a rack-bar attached to said plunger, and slidable in a guide-way in the bed, and engaged by a toothed sector or quadrant pivoted upon the bed, and provided with a handle, all substantially as described.

(Specification, 3s. ; drawing, 1s.)

No. 23060.—27th June, 1907.—UNITED SHOE MACHINERY COMPANY, of Paterson, 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, United States of America (the assignees of William Amber Reed, of Chelsea, Suffolk, Massachusetts, United States of America, Machinist). Improvements in or relating to abrading-devices.*

Extract from Specification.—The device shown and described comprises a plurality of cover-supporting sections between co-operating faces of which the two ends of a cover are clamped. In order to reduce as far as possible the manipulation of the parts required in renewing the covers, it has been proposed to provide sectional devices of this type, with means for locking the sections in closed position, the means being so constructed as to be brought mechanically into operation by the relative approaching movement of the sections in closing them upon the ends of the cover. It is believed, however, that none of the devices of this type heretofore produced have become of general use, and it is a further object of this invention to provide a practical device adapted to have this mode of operation. To the end that in a device of this type the sections may be held securely in closed position against the centrifugal force exerted upon them in the rapid rotation of the device, and in order that the cover may be retained securely in working position, an embodiment of the present invention comprises the provision, in a rotary device having a plurality of relatively-movable cover-supporting sections arranged to receive between them the two ends of a cover, of means for relatively moving said sections to exert pressure upon the ends of the cover, the means being arranged so as to be actuated by the rotation of the device. The arrangement is such that liability of the sections moving apart when the device is rotating is prevented, and furthermore an effective grip of the sections upon the ends of the cover is insured during the rotation of the device. Even if the sections have not been closed tightly upon the ends of the cover by the operator, they will be brought into this relation to the cover by the movement of the device. The construction described comprises a sectional wheel having a locking-member pivotally mounted upon one of the sections, and arranged for movement toward and from the periphery of the wheel in a plane transverse to the axis of the wheel. The other section is provided with a co-operating part, arranged to be engaged by the locking-member to hold the sections from movement which would separate them from each other. The locking-member is mounted so that when the sections are closed upon the ends of the cover by the operator it will be moved mechanically into engagement with said part, and during the rotation of the wheel the locking-device will be acted upon centrifugally so as to force it into effective relationship thereto. The contracting surfaces of the locking-member and said co-operating part are so arranged that outward movement of the locking-member toward the periphery of the wheel is accompanied by relative approaching movement of the sections.

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

(Specification, 9s. 6d. ; drawing, 1s.)