APRIL 19.] THE NEW ZEALAND GAZETTE. 1087

same from two or more separate layers of previously scored material, the outer being folded over and into the box-body and being secured therein, substantially as described and as illustrated in the drawings. (2.) In the manufacture of boxes composed of an inner blank or box body and an external covering material, a locking-piece or false bottom adapted to fit in the box and by engagement with the covering material or with the box-body lock the parts in their set-up position, substantially as described. (3.) In the manufacture of boxes previously so scoring the intended covering blank as to adapt it to fit the box-body on all the external surfaces, and then securing it to the body, substantially as described. (4.) In the manufacture of boxes previously so scoring the intended covering blank as to adapt it to fit the box-body without showing external, raw, or cut edges, substantially as described. (5.) In the manufacture of boxes, a covering blank adapted to fit a second blank or box body and to be locked thereto without the use of adhesive, substantially as described. (6.) Paper or cardboard boxes constructed substantially as described and as illustrated in the drawings.
(Specification, 5s. 6d.; drawings, 4s.)

No. 20880.—21st March, 1906.—MARCONI’S WIRELESS TELEGRAPH COMPANY, LIMITED, of 18 Finch Lane, London, England (assignees of Guglielmo Marconi, LL.D., D.Sc., of 18 Finch Lane, London, England). Improvements in or relating to wireless telegraphy.

Claims.—(1.) In a system of wireless telegraphy, arranging the transmitting-antenna substantially horizontal and in a vertical plane passing through the receiving-station, substantially as described. (2.) In a system of wireless telegraphy, arranging the receiving-antenna substantially horizontal and in a vertical plane passing through the transmitting-station, the detector end being nearer thereto, substantially as described. (3.) In a system of wireless telegraphy, arranging the transmitting and receiving antennæ substantially horizontal and in the same vertical plane, substantially as described. (4.) Apparatus for wireless telegraphy, substantially as described and illustrated in the drawings.
(Specification, 7s.; drawing, 1s.)

No. 20882.—21st March, 1906.—JOSÉ FOLA, whose mother’s name is Igurbide, of Valentia, Valencia, Spain. Improvements in propellers.

Claims.—(1.) A propeller, the blades of which are of helicoidal curvature, such that their surfaces can be described by the radius of a sphere when said sphere is caused to rotate simultaneously relatively to two of its diameters. (2.) A propeller having two sets of helicoidal blades arranged concentrically, the outer set being of inverse curvature to the inner set. (3.) A propeller comprising two sets of helicoidal blades adapted to rotate in opposite directions, the one set of blades being of inverse curvature to the other set.
(Specification, 2s. 3d.; drawing, 1s.)

No. 20883.—21st March, 1906.—BRUNSWICK REFRIGERATING COMPANY, of New Brunswick, New Jersey, United States of America (assignees of Richard Whitaker, of New Brunswick aforesaid). An improvement in pumps.

Claims.—(1.) A gas-pump having a piston and a connecting-rod therefor, the latter having an integral bearing head engaging directly with the piston. (2.) A gas-pump as covered by Claim 1, having a casing with a cylinder removable secured thereto, and a piston having a bearing extending entirely through, and the connecting-rod with an integral head engaging directly with the bearing, and being of a length equal to the diameter of the piston, and engaging at its free ends with the cylinder so that the piston and rod may be separated upon the removal of the cylinder from the casing. (3.) A gas-pump having a casing with an oil-chamber therein, and a removable cover, and a second cover attached thereto by any suitable means, such as bolts, forming a condensing-chamber which communicates with the oil-chamber, the second cover being water-jacketed or not. (4.) An amplification of the invention of Claim 3, in which the first cover carries a bearing for the shaft. (5.) A modification of the invention covered by Claim 3, in which the first cover is secured to the second cover, and the second cover secured to the casing as illustrated in Fig. 4, so that only one joint may be made. (6.) An improved valve in connection with pumps, the cylinder having an open end, and an enlargement forming an equilibrium chamber, and a seat for the outlet-valve, and the valve-guide, clamped against the open end of the cylinder by a crown, the outlet-valve having a hollow stem which passes through the guide, leakage at that place being prevented by rings and a gland, and the inlet-valve being carried by the outlet-valve within the stem thereof. (7.) The improved duplex-valve which comprises the outlet-valve within the equilibrium chamber, and adapted to engage with the seat, and the inlet-valve carried by the outlet-valve, the outlet-valve having a stem, and a spring for seating the valve, the stem of the valve being of small size relatively to the size of the seat with which the valve engages, whereby the area of surface of the outlet-valve within the equilibrium chamber subjected to pressure in the direction which tends to seat the valve will be large relatively to the area of surface within the chamber tending to unseat the valve, and a comparatively weak spring may be employed. (8.) An amplification of the invention covered by Claim 7, in which the outlet-valve has an annular chamber formed on its face, which communicates with a draw-off port adjacent to the seat. (9.) The inlet-valve having a hollow stem, and a closed end with a bearing-face adjacent to the end, and lateral ports communicating with the hollow stem, the ports being adjacent to the bearing-face. (10.) An improved pump having the joints between the cylinder and the casing, the casing and cover, the cylinder and valve-guide, and the valve-guide and crown, one or more of the said joints being formed with concentric grooves ground to make a close joint, and producing baffling chambers to condense leaking gas. (11.) An improved pump having a casing and a cylinder having an open end, a valve-guide and a crown, and a tie-bar, with tie-rods and bolts connecting the tie-bar to the casing, and clamping the cylinder against the casing, the valve-guide against the cylinder and the crown against the guide. (12.) An amplification of the invention covered by Claim 11, in which the valve-crown is spherical in shape, with the tie-bar engaged with the middle thereof, so that tight joints will be assured, if the bolts be set up unequally.
(Specification, 11s.; drawing, 2s.)

No. 20884.—21st March, 1906.—BRUNSWICK REFRIGERATING COMPANY, of New Brunswick, New Jersey, United States of America (assignees of Richard Whitaker, of New Brunswick aforesaid). An improvement in valves.

Claims.—(1.) An improved valve having a body made of solid stock, with a centerbore, and a seat therein, and communicating passages bored to communicate with the centerbore, and annular seats for attachment to the pipe-supports, with tie-plates having flanges engaging with the seats and rods for engaging the flanges against the seats and holding the tie-plates against the body, the said valve having a stem working within the centerbore, and having a threaded portion which engages with a threaded member attached to the body. (2.) An amplification of the invention contained in Claim 1, in which the valve-stem is mounted within a threaded nut, which lies within the centerbore, and is held in position by means of a gland and packing, and if necessary by means of a bolt passing through the side of the body, whereby by removing the nut and returning the stem the valve may be ground. (3.) A modification of the invention covered by Claim 2, as is illustrated in Figs. 3 and 4, in which the valve-stem engages with threads in the cover, the gland having a long enough body to support the stem when the cover is removed. (4.) An amplification of the invention covered by Claim 3, in which the threads connecting the cover to the body and connecting the stem to the cover are of the same pitch, whereby the cover may be removed or adjusted without altering the position of the valve. (5.) The improvement in valves, in which a screen such as 31 is introduced in the inlet-opening of the valve and rests upon a shoulder in one of the inlet-plates so that it may be readily removed for inspection or replacement.
(Specification, 6s. 6d.; drawing, 1s.)

No. 20885.—21st March, 1906.—BRUNSWICK REFRIGERATING COMPANY, of New Brunswick, New Jersey, United States of America (assignees of Richard Whitaker, of New Brunswick aforesaid). An improvement in refrigerating-apparatus.

Claims.—(1.) The improvement in refrigerating-machines which comprises a connection between the motor and pump, which consists of a device for permitting the motor to start independently of the pump, and to automatically connect the two together after the motor has attained a sufficient speed to overcome the inertia of the pump. (2.) The amplification of the invention contained in Claim 1, which comprises a wheel turning loosely upon the pump-shaft, and connected with the motor by a belt, with a lever pivoted upon the wheel and adapted to move outward by centrifugal force, and apply a brake to a pulley connected to and adapted to turn the shaft.