No. 91. 2493

SUPPLEMENT
TO THE
NEW ZEALAND GAZETTE
OF
THURSDAY, NOVEMBER 26, 1903.

Published by Authority.

WELLINGTON, THURSDAY, NOVEMBER 26, 1903.

CONTENTS.

Complete Specifications accepted .. .. .. 2493
Provisional Specifications accepted .. .. .. 2499
Letters Patent sealed .. .. .. .. 2500
Letters Patent on which Fees have been paid .. 2500
Subsequent Proprietors, &c., of Letters Patent registered .. .. .. .. 2500
Request to amend Specification allowed .. .. 2500
Applications for Letters Patent abandoned .. .. 2500
Applications for Letters Patent lapsed .. .. 2501
Letters Patent void .. .. .. .. 2501
Applications for Registration of Trade Marks .. 2501
Trade Marks registered .. .. .. .. 2503
Trade Mark Renewal Fees paid .. .. .. 2503
Subsequent Proprietors of Trade Marks registered .. 2504
Request for Correction of Clerical Error in Trade Mark Application .. .. .. .. 2504
Illustrations of Inventions .. .. .. At end

Notice of Acceptance of Complete Specifications.

Patent Office,
Wellington, 25th November, 1903.

COMPLETE specifications relating to the undermentioned applications for Letters Patent have been accepted, and are open to public inspection at this office. Any person may, at any time within two months from the date of this Gazette, give me notice in writing of opposition to the grant of any such patent. Such notice must set forth the particular grounds of objection, and be in duplicate. A fee of 10s. is payable thereon.

No. 15894.—23rd January, 1903.—GEORGE HUTCHINSON, of 23, Ellice Avenue, Wellington, New Zealand, Schoolmaster. An improved milking-machine.*

Extract from Specification.—This invention relates to the milking of cows and other animals. The essential feature of my invention consists in the employment of fluid, either liquid or gaseous, under pulsative pressure in a teat-press which receives the teat of the animal, the pressure being applied to the teat in such manner as to express milk therefrom. In practice, I employ what I term squeezers, one or a plurality of which are contained in each press; a teat-press is used upon each teat, and the whole or any number of teats of an animal are operated upon simultaneously. Several machines may be connected and driven from a single source of power so that a number of animals may be milked at the same time, and means may be employed to regulate the pressure and speed to suit the individual animal. The upper squeezer in the teat-press is first brought into operation, and by pressing on a small part of the teat near its upper end prevents milk from escaping upwardly into the udder; the remaining squeezers then come into operation, either simultaneously or one after the other, commencing with the upper squeezer, and by pressing on the remainder of the teat express milk into a receptacle. To suit different lengths of teats the number of squeezers may vary in different teat-presses. A device is employed for putting out of action as many squeezers as may be necessary to adapt the press to suit the length of teat of any particular animal. In one form of teat-press the squeezers consist of a series of tubular rings or pouches, surrounding or partially surrounding the teat, and fluid pressure is admitted to and allowed to escape from each of them independently and at required intervals, whereby the teat is acted upon by lateral pressure of the squeezers. In this arrangement I may obtain differentiation of pressure in the squeezers or pouches by using a variation of the ordinary hydraulic intensifier. In another modification the squeezers are approximately flat slats secured upon an elastic bag, the top slat pressing harder upon the teat than those beneath it. In yet another form the bag is between the teat and the flat squeezers, and encircling bands around the whole are drawn tight against the teats by the action of the bag upon the squeezers. In the above forms of teat-press in which slats are employed as squeezers, said slats or squeezers depend, for the ratio each to the other of the different pressures which they exert upon the teat, upon the differences in the area which each of them opposes to the fluid-pressure operating them, as contrasted with the area which each of them presents to the teat. The upper squeezer has a large area exposed to the fluid pressure, and a comparatively small surface contacting with the teat, and the lower squeezers have a comparatively small area exposed to the fluid pressure, and a large area which comes in contact with the teat. The lower squeezers may be provided with springs or elastic medium, which can if desired be adjustable, whereby the time at which they come into operation relatively to the upper squeezer is regulated. Cups may receive the milk issuing from the teat, and tubes be employed to convey the milk to a receptacle, or a large conveyor may collect all the milk from the four teats and conduct it to a receptacle. Where required the teat-presses are provided with hinge joints, or other arrangement, to