1524
THE NEW ZEALAND GAZETTE.
[No. 49

which a character or group of characters is printed to be preceded, but also followed, by an impulse in the opposite direction, so that when, for example, two characters or groups of characters are printed consecutively two printing-impulses in one direction and four impulses in the opposite direction are sent over the line, the injurious effect of the electrostatic capacity being thus suppressed, and the line well prepared for the printing-impulses. In carrying out my improved process I use a type printing-telegraph—for example, Hughes’s apparatus—which I modify by providing a second sleeve on the spindle of the sliding carriage. Said second sleeve is moved during the rotation of the spindle by a second rider, in a similar manner to that in which the sleeve commonly used in such apparatus is operated. This second sleeve is thus caused to act on a contact-device, so that, in combination with the usual sleeve, positive and negative electric impulses can be sent over the line exactly at the desired points of time. When, as in many cases, it is not necessary for each printing-impulse to be followed by an impulse in the opposite direction, but it is sufficient for each printing-impulse to be preceded by an oppositely directed impulse, I make the second rider smaller than the usual one. In this case, therefore, a short impulse in one direction is followed by a relatively long printing-impulse in the opposite direction. In addition to the above-mentioned improvements, my invention comprises the following auxiliary devices: For sending out the electric impulses I use a comparatively small condenser in combination with a strong battery, in order to obtain effective and very short impulses, whilst for the reception I employ larger condensers. Further, I combine galvanometers—for example, mirror-galvanometers—with condensers in such a manner that the discharge of one condenser, after each print, takes place over the galvanometer to the ground, so that the former is caused to return with certainty into its position of rest before each print. By means of a special switch-device I enable the operator at the receiving station to send signs to the transmitter station in the intervals in which no print is effected. Moreover, I cause the resilient tongues or contact-pins of the Hughes apparatus, or the like, to return into the position of rest by two rolls arranged at right angles to each other.

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

(Specification, 13s. 6d.; drawings, 4s.)

No. 17866.—8th June, 1903.—WILLIAM EDWARD MARTIN, of 62, St. Martin’s, Stamford Baron, Northamptonshire, England, Agricultural Engineer. Improvements in machines for turning hay, corn, clover, and similar crops.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Extract from Specification.—The object of the present invention is to construct a swath-turner which is light, easy-running, silent, very efficient in use, and will not damage the crop by knocking out the seed or by knocking the leaf off, as is the case with other swath-turners, the turning-mechanism being preferably placed at an angle to the line of draught, and the teeth of which are always in a hanging or vertical position; therefore each rake, after turning its portion of the swath, leaves the same gently, and has no tendency to carry any of it round or allow it to fall back again. Although only one rake at a time is actually engaged in the turning operation, the action is continuous, because directly one rake has picked up its portion of the swath the next rake commences on the next portion, and so on, therefore the whole swath is turned over completely on to fresh ground.

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

(Specification, 5s. 6d.; drawings, 3s.)

No. 17867.—3rd May, 1904.—NORBERT CEIPEK, of 33, Währingerstrasse, Vienna IX., Austria, Chemical Engineer. Explosive compounds of high shattering-power.

Claims.—(1.) An explosive compound of high shattering-power consisting of a mixture of ammonium-nitrate and aniline-nitrate, substantially as described and in the proportions specified. (2.) In an explosive compound according to claim 1, the addition of potassic-nitrate for the purpose of allowing of the storing of the explosive compound in a dry state, substantially as and in the proportions described. (3.) In an explosive compound according to claim 2, for the purpose of increasing its shattering-energy and safety against the ignition of inflammable gases, the addition to the described compound of picric acid, substantially as and in the proportions specified.

(Specification, 1s. 6d.)

No. 17868.—3rd May, 1904.—ROBERT WRIGHT TODD, of Waikiwi, Southland, New Zealand, Sanitary-pipe Manufacturer. Improved means for use in the manufacture of concrete pipes.

Claim.—(1.) In means for the manufacture of concrete pipes, a moulding-cylinder, a core fitting within such cylinder so as to leave an annular space between, and inclined blades secured to the upper portion of the periphery of the core and extending across the annular space, substantially as specified. (2.) In means for the manufacture of concrete pipes, a cylinder constructed of two semicircular halves removably secured together, a core fitting within such cylinder so as to leave an annular space between, inclined blades secured to the upper portion of the periphery of the core and extending across the annular space, and means whereby such core may be revolved, substantially as set forth. (3.) The general arrangement, construction, and combination of parts in my improved means for use in the manufacture of concrete pipes, as described and explained, as illustrated in the drawings and for the several purposes set forth.

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

No. 17869.—29th April, 1904.—LEO NELKEN, of 32, William Street, Melbourne, Victoria, Australia, Inventor. Electric hygienic heel-pad.

Claims.—(1.) Electric hygienic heel-pads: In combination, a copper plate as A, zinc plate as C, an insertion of pulverised woollen material as D placed between such plates, and a steel plate as F, substantially as and for the purposes described. (2.) Electric hygienic heel-pads: In combination, a copper plate as A, zinc plate as C, pulverised woollen material as D placed between such plates, a slot as E, and a steel plate as F, the whole being secured by eyelets H, which also act as ventilators, substantially as and for the purposes described.

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

No. 17872.—4th May, 1904.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of the British Westinghouse Electric and Manufacturing Company, Limited, of Westinghouse Building, 2, Norfolk Street, Strand, London, England, Manufacturers, the assignees of Harve Reed Stuart, of 524, Wallace Avenue, Wilkinsburg, Pennsylvania, United States of America, Electrical Engineer). Improved apparatus for varying the voltage of alternating currents.

Claims.—(1.) In apparatus for obtaining a gradual variation in the voltage of an alternating-current work-circuit, comprising a main transformer with spaced leads terminating in contacts, and an auxiliary transformer connected between the main transformer and the work-circuit, an arrangement whereby the coil of the auxiliary transformer can be moved in engagement with the main-transformer contacts in uninterrupted succession, so as to vary the active length of the secondary winding of the auxiliary transformer. (2.) In apparatus of the kind described, the connection of one end of the secondary winding of the auxiliary transformer through a discontinuous collector-ring provided with brushes respectively joined through resistances to one conductor of the consumption-circuit for the purpose specified. (3.) Apparatus for obtaining a gradual variation in the voltage of an alternating-current work-circuit, constructed and operating substantially as described with reference to the drawings.

(Specification, 8s. 6d.; drawing, 1s.)

No. 17875.—5th May, 1904.—JAMES PALMER CAMPBELL, of 15, Featherston Street, Wellington, New Zealand, Solicitor (nominee of Frank Conrad, of 1301, Walnut Street, Edgewood Park, Pennsylvania, United States of America, Electrical Engineer). Improvements in prepayment electrical measuring-instruments.

Claims.—(1.) For an electrical measuring-instrument in which the main-circuit connection is controlled by an electro magnet or magnets, a prepayment coin-operated mechanism which, by the insertion at any time of one or more of a predetermined number of coins, is arranged to be moved in one direction a distance proportionate to the number of coins inserted, and to be moved the same distance in the opposite direction by the counting-train of the instrument, whereby on the insertion of the first coin the electro-magnet is energized to close the main circuit, and said circuit is maintained closed until an amount of electrical energy corresponding to the total number of coins inserted has been supplied. (2.) For an electrical measuring-instrument in