Dec. 13.] THE NEW ZEALAND GAZETTE. 3191

or the like blades, substantially as and for the purposes described with reference to Fig. 2 of the drawings. (3.) In turbines, rotary compressors, and the like, providing on the blade-shrouds and or on the drum or cylinder opposite the blade-ends a brass or the like strip having a finely serrated surface, said serrations being circumferential, spiral, or oblique, substantially as and for the purpose described with reference to Figs. 3 and 4 of the drawings.

(Specification, 4s. 6d.; drawing, 1s.)

No. 22035.—5th November, 1906.—THOMAS BERRY LOCKLEY, of “Maberry,” Clinton Street, Goulburn, New South Wales, Australia, Teacher of Carpentry. Improvements in carpenters’ vise.

Claims.—(1.) In a carpenters’ vise, a travelling bracket attached to the jaw and adapted to travel and be retained upon a guide-bar on the bench-end, substantially as described and explained. (2.) In a carpenters’ vise, the combination with the jaw and bench-screw of a travelling bracket such as 5 having arms such as 6 and 7, hooked bars such as at 19 and 20, and hooked bolts such as 23, a guide-bar such as 13 having recesses or guide such as 16 and 17, and a tightening-gib such as 18, substantially as described and explained, and as illustrated in the drawings. (3.) The combination and arrangement together of all the mechanical parts or integers for the purposes set forth constituting an improved carpenters’ vise, substantially as described and explained, and as illustrated in the drawings.

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

No. 22041.—8th November, 1906.—EDWARD WILLIAM THURLOW, of No. 87 Cunningham Street, Northcote, Victoria, Australia, Chemist and Consulting Rubber Expert. Improvements in golf-balls.

Claims.—(1.) In a golf-ball of the class described, a gutta-percha core in the form of a spider the spokes of which are circumferentially wound with vulcanised indiarubber thread under a tension approaching the elastic limit, the spaces between the spokes being subsequently filled with the same material by winding spherically at preferably half the above tension. (2.) In a golf-ball of the class described, a gutta-percha spider the spokes of which are provided with enlarged ends as and for the purpose described. (3.) In a golf-ball of the class described, the combination with a gutta-percha spider wound with vulcanised indiarubber thread as claimed in claim 1, the whole forming a spherical core, of a gutta-percha shell or cover integral with said spherical core. (4.) In a golf-ball of the class described, the combination with a gutta-percha spider constructed as claimed in claim 2, and wound with vulcanised indiarubber thread as claimed in claim 1, the whole forming a spherical core, of a gutta-percha shell or cover integral with said spherical core. (5.) In the manufacture of a golf-ball of the class described, securing the gutta-percha shell or cover to a gutta-percha spider wound in the manner set out in claim 1. (6.) In the manufacture of a golf-ball of the class described, securing the gutta-percha shell or cover to a gutta-percha spider the spokes of which are provided with enlarged ends as set out in claim 2 and wound in the manner set out in claim 1.

(Specification, 5s.; drawing, 1s.)

No. 22052.—14th November, 1906.—AKTIEBOLAGET SEPARATOR, a corporation existing under the laws of Sweden, and having its place of business at 8 Fleminggatan, Stockholm, Sweden, Manufacturers (assignees of Eric August Forsberg, of 8 Fleminggatan, Stockholm, Sweden, Engineer). Feed-device for centrifugal separators.

Claims.—(1.) In such milk-separators where the milk is supplied to the liner by means of holes arranged in the discs, and where the spindle of the bowl is drawn up in the bowl above the inner edge of the liner, a device for the leading of the whole milk to the holes j of the discs, characterized thereby, that in the bottom part of the feed-pipe a above the upper end of the spindle d there is arranged a chamber g, whence vertical or nearly vertical channels h branch, through which the inflowing milk is led to openings i, corresponding to holes j in the discs, and between which there are passages k, wherein the separated cream can ascend. (2.) In the device indicated in claim 1, the arrangement that the supply-channels for the milk are open on one or on both sides in order that they may be easier cleansed.

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

No. 22053.—14th November, 1906.—AKTIEBOLAGET SEPARATOR, a corporation existing under the laws of Sweden, and having its place of business at 8 Fleminggatan, Stockholm, Sweden, Manufacturers (assignees of Anders Johan Ericsson, 8 Fleminggatan, Stockholm, Sweden, Engineer). Improvements in centrifugal machines for separating solids from liquids.

Claims.—(1.) In centrifugal machines for separating solids from liquids, a bowl rotatably mounted in the centrifugal bowl and concentric thereto. (2.) A centrifugal machine as described in claim 1 in which the scraper-wheels rotatably mounted in the bottom of the bowl are surrounded by the inner bowl in order that the solids stratified on the walls of the said inner bowl may be conveyed to said scraper-wheels. (3.) A centrifugal machine as in claim 1 having inclined scrapers rigidly arranged in the machine and cooperating with the inner rotating bowl in order that the solids may be scraped down to the bottom of the centrifugal bowl. (4.) In a centrifugal machine as in claim 3 in which the bowl is provided with a liner, the construction wherein the inclined scrapers are secured to said liner. (5.) A centrifugal machine as in claim 3 in which the inclined scrapers are secured to a perforated pipe, drum, or the like arranged in the centrifugal bowl. (6.) A centrifugal machine as in claim 1 in which the inner bowl is provided on its exterior with inclined scrapers in order that the solids deposited in the space between the outer and- the inner bowls may be scraped down to the bottom of the bowl.

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

No. 22056.—14th November, 1906.—AMBROSE DOXEY, of Seymour, Victoria, Australia, Produce and Wood Merchant. Improvements relating to the testing of dampness in wool.

Claims.—(1.) For the purpose indicated, the process of dealing with wool consisting of the application of a dry fine powder consisting of permanganate of potash, substantially as described. (2.) For the purpose indicated, the process of dealing with wool consisting of the application of a dry fine powder consisting of a chemical, substantially as described, adapted to be discoloured by dampness.

(Specification, 2s.)

No. 22057.—14th November, 1906.—HENRY JAMES MARKS, of Russell Street, Toowoomba, Queensland, Australia, Architect. Improvements in automatic buffer-couplings.

Claims.—(1.) An automatically acting buffer-coupling for railway-vehicles consisting of the combination of parts described, and illustrated by the drawings. (2.) In automatically acting buffer-couplings of the character described, the form of shackle C for the purposes stated, described, and illustrated by the drawings. (3.) In automatically acting buffer-couplings of the character described, the combination of a pivoted shackle arranged to be thrown over, a trigger part to secure shackle and hook part in position for securing a shackle, and means for operating the trigger to release shackle, all as described, and illustrated by the drawings.

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

No. 22062.—15th November, 1906.—EDWIN BURT, of El Oro, Mexico, Mining Engineer. Improvements in filters for metals, ores, slimes, and the like.

Claims.—(1.) The filter constructed and arranged substantially as specified. (2.) The filter consisting of a cylinder having a series of filter-mats suspended therein for separating the solution and solid matter of ore-slime. (3.) The filter consisting of a cylinder having a series of filter-mats swingingly suspended therein for separating the solution and solid matter of ore-slime, and means for tilting the cylinder to eject the solid matter therefrom, as described. (4.) The filter consisting of a cylinder having a series of filter-mats swingingly suspended therein for separating the solution and solid matter of ore-slime, means for automatically removing the solid matter caked on the mats, and means for tilting the cylinder to eject the solid matter therefrom. (5.) The filter having a filter-mat composed of a wire-mesh core contained between layers of canvas. (6.) The filter consisting of a cylinder, a series of filter-mats therein for separating the solution and solid matter of ore-slimes, and means for automatically removing the solid matter caked on the mats.

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