APRIL 6.] THE NEW ZEALAND GAZETTE. 871

purpose indicated, in combination, a base block shaped upon its upper surface to fit the foot of the wearer, and a rubber heel-piece carried in recess in said block above the ordinary boot-heel, substantially as specified. (4.) In a boot for the purpose indicated, in combination, a base block, a toe portion jointed thereto, and a metal spring interposed between said toe portion and the base block, substantially as and for the purposes specified and illustrated in the drawing.
(Specification, 3s. ; drawing, 1s.)

No. 18165.—16th July, 1904.—GEORGE HUTCHINSON, of Seatoun, Wellington, New Zealand, Schoolmaster. Improvements in milking machinery.*

Extract from Specification.—For suspending the cradle carrying the teat-presses from above the animal I now employ a beam, which is pivoted at one end above the head of the cow and supported at its rear end upon a cross-piece in such manner that the beam may be readily swung upon its pivot to adjust it approximately over the middle of the back of the animal. A spring-rod which carries at its rear end the suspending arm has an upwardly curved spring at its forward end, the end of said spring being pivotally connected to a hand-lever fulcrumed upon the beam referred to. The spring bears against a block upon the beam, and when the hand-lever is drawn down the normal effect of the spring upon the rod is increased. A rack arrangement is used to retain the hand-lever in desired position. The suspending arm has a socket at its upper end sliding upon and also revolving about the spring-rod referred to, and the arm is pivotally connected to this socket. The belly arm which projects beneath the cow from the suspending arm referred to carries a fixed belly-band which supports a pad or pads which bear against the belly of the cow in front of the udder. For carrying the teat-presses from the belly arm I employ an approximately horizontal bar, which is secured upon the belly arm, and upon which are threaded the socketed ends of depending levers, one for each teat-press. The lower end of each of these levers has a socket receiving a short spindle projecting laterally from a lever which has a pivoted joint so as to be capable of lateral adjustment. The end of this lever is connected by a ball and socket joint with the teat-press. Means are employed for simultaneously locking the joints at both ends of the depending levers referred to. In one means of locking which I have devised the sockets are sawn through, and a rod, headed at one end and screwthreaded at the other, has a thumb-nut upon it, which, when screwed up, clamps the sockets together and simultaneously locks the two joints. In apparatus for producing pulsative pressure in the teat-presses, and for regulating the degree of said pressure, I have devised the following improvements: The pulsation bags which contain the fluid employed in the teat-presses are arranged upon air cushions, said air cushions being connected by tubes with cylinders to which an air-pump is attached. Pressure in either set of cylinders and air-cushions may be obtained by the air-pump to a degree indicated by gauge. When the pressure in a pulsation bag due to the action of the cams equals the prearranged air pressure in its corresponding cushion and cylinder, the cushion yields, and practically no further pressure is produced in the presses. A blow-off cock is employed on each of these cylinders. Pipes upon the pulsation bags have taps to which tubing may be connected, having funnels at their upper ends whereby liquid may be introduced to the pulsation bags from some height above them, so that air does not pass into the bags with the liquid. The levers bearing upon the pulsation bags are in two parts, one lying upon the other, and both pivoted in one bracket. A sliding wedge-block between the two parts of the lever can be adjusted to increase the distance between them, whereby the amount of water displaced during the stroke of the cam is regulated. The wedge-block has a rod by which it may be adjusted, the end of said rod having a cross-tee which engages in one or other of a plurality of notches in a retaining rack. A tray which contains a set of pulsation bags, cushions, cylinders, and operating apparatus may be removable from the frame in which the cam-shaft is mounted, and, if desired, the tray may be raised and lowered by a cam arrangement operated by a lever, so that the pulsation apparatus may be regulated and thrown in and out of action as desired.
[NOTE.—The above extract from the specification is inserted in place of the claims.]
(Specification, 16s. ; drawings, 6s.)

No. 18436.—6th September, 1904.—BENJAMIN TREWHELLA and WILLIAM TREWHELLA, trading as “Trehwella Bros.,” of Trentham, Victoria, Australia, Engineers and Ironworkers. Improved pawl and ratchet mechanism.*

Claims.—(1.) Improved pawl and ratchet mechanism, comprising an oscillating-rocker having a pivoted sector bearing, and fitted with two operating pawls connected by links to a spring-operated balance-lever, and means for alternatively releasing the pawls from the ratchet-teeth, substantially as set forth. (2.) In pawl and ratchet mechanism of the kind specified, a pivoted sector bearing having a curved face and adapted to fit loosely in a socket and limited in its swing by stops, substantially as and for the purpose set forth and as illustrated. (3.) In pawl and ratchet mechanism, a pair of pawls loosely mounted in an oscillating rocker, and connected by links to a balance-lever in combination with a spring-operated arm mounted on a pivot and attached to said balance-lever, substantially as set forth. (4.) In pawl and ratchet mechanism of the kind specified, a spring-operated disengaging lever pivotally mounted on a stud, and having at its end two lateral lugs with inclined faces adapted to alternately engage a pin on the side of each pawl, and a cam for disengaging said lever, substantially as set forth.
(Specification, 3s. 6d. ; drawings, 2s.)

No. 18450.—15th September, 1904.—MIGUEL TORRENTE, of Johannesburg, Transvaal, Metallurgist. Improvements in the separation of finely divided solid matter from the liquid in which it is suspended.*

Claim.—The washing and separating apparatus for use in metallurgical and other operations, consisting of a vat having a pointed bottom and containing the liquid in which the pulp to be treated is precipitated, and being partially divided into two or more compartments by a vertical partition or vertical partitions extending to a suitable distance from the bottom, each of said partitions being surmounted by an inclined plate, on to which the pulp is distributed by a perforated launder or otherwise, and from which it flows into the vat, a valve for withdrawing deposited pulp being fitted to the bottom of the vat, and an outlet for liquid near to the top thereof upon the reverse side of the partition to that on which the pulp enters the liquid, substantially as described with reference to the drawings.
(Specification, 4s. 3d. ; drawing, 1s.)

No. 18463.—20th September, 1904.—FRANK CASEY, of 143, Cromwell Street, Collingwood, near Melbourne, Australia, Engineer, and EDWARD WEST HUBBARD, of 34, Queen Street, Melbourne aforesaid, Legal Manager. Improvements in pump- or suction-dredging machinery.*

Claims.—(1.) In a pump or suction dredge, an intake-pipe mounted in bearings so that it can be revolved, substantially as and for the purposes specified. (2.) In a pump or suction dredge, a revolvable intake or suction pipe having cutting-blades fixed to its outer or lower end, substantially as and for the purposes specified. (3.) In a pump or suction dredge, a revolvable intake or suction pipe fitted with a spur-wheel (as f) with which gears a pinion (as g) driven by bevelled gear (as h) arranged within a tubular projection (as i) of the intake or suction pipe, substantially as and for the purposes specified. (4.) In a pump or suction dredge, a revolvable intake or suction pipe having cutting-blades fixed to its outer or lower end in combination with a shield (as m), substantially as and for the purposes specified. (5.) In a pump or suction dredge, a shield (as m) having a hinge (as n), substantially as and for the purposes specified. (6.) In a pump or suction dredge, a shield (as m) having a hinge (as o), substantially as and for the purposes specified. (7.) The described improvements in pump- or suction-dredging machinery constructed, arranged, and operating, substantially as and for the purposes specified.
(Specification, 3s. 3d. ; drawings, 3s.)

No. 18474.—22nd September, 1904.—ALEXANDER McLEOD, of 171, Queen Street, Brisbane, Queensland, Australia, Confectioner. Improvements in tripod-stands for cameras and suchlike articles.*

Claim.—In improvements in tripod-stands for cameras and suchlike articles, three rectangular plates pivotally connected to tripod legs and hinged to a triangular-shaped plate centrally disposed and adapted to fold over same, in combination with a tightening-pin, as and for the purpose set forth and as substantially described and illustrated by drawings.
(Specification, 2s. 6d. ; drawing, 1s.)

No. 18675.—29th October, 1904.—CHARLES BERNARD PLUMMER and GEORGE WILFRED PLUMMER, trading as “C. Plummer,” of Rutland Street, Auckland, New Zealand, Straw-hat Manufacturers. An improvement relating to hats.*