D. H. M. S. 3 1 0 0 4 3 0 0 4 12 0 0 5 0 0 0 5 5 54 0 5 18 5 22 000 Long. 0° 16′ 30′′ W. from Greenwich. CELESTIAL PHENOMENA, FOR JUNE, 1826, in conj. with ♪ in Aries. in conj. with in Gem. OD in conj. with 4 long. 23° in Gem. lat. 1° 55' S. h lat. 1° 1' S. dif. lat. 44' OD in conj. with y in Gem. 0 ₫ Stationary. Rotherhithe. moon-the waning (moon. J. LEWTHWAITE. 336 LITERARY AND SCIENTIFIC NOTICES. AFRICAN EXPEDITION.-Intelligence has been received from our African Travellers by which we learn that 'Captain Clapperton early in December passed through Hio, (the Yariba of the Arabs,) reaching by the middle of the month, Jennah, a considerable town of that kingdom, after a very fatiguing journey, through thick woods, meeting with the most friendly reception from the natives, who possessed numerous horses, and were expert equestrians. From Jennah to Katunga, the capital of Hio, is about 30 days journey distance, (perhaps from 250 to 300 miles,) and the Niger (Kowara) is thence only three days march, Captain C. and his servant, as well as Captain Houston, had suffered from the country fever; but were recovered, enjoying a healthier climate on their route from Jennah, which lay over the Kong mountains. By the last accounts received, they were half way to Katunga, in 8° 23′30′′, and the elevation above the sea estimated at 2500 feet. From a place called Engua, Captain C. writes that his fellow-traveller, Mr. Pearce, had died on the preceding day, the 27th of December; while Dr. Morison and his servant, both unable to proceed, had returned to Jennah, and fell victims to this fatal climate. The other division of the Expedition had made its way to Dahomey, being received by the King and his captains in a most hospitable manner. Mr. Dickson had also experienced a seasoning fever; but on recovery, had a conference with his Majesty of Dahomey, and on the last day of the year left his Court with an escort of 50 armed men, and 100 bearers, under the command of a relation of the King, for a town called Shar, seventeen days journey towards the north, being situated to the south-west of Yaury. Mr. James had returned to the coast. Mr. H. W. Dewhurst, Surgeon, has in the press a Dictionary of Anatomy and Physiology, to be published in Parts, purporting to contain a complete System of Practical Anatomy and Physiology; the work will form a guide to the student in the dissecting room, and be found useful to the medical practitioner. Also by the same Author, Synoptical Tables of the Materia Medica, corresponding to the London Pharmacopoeia. Dr. Barry, of Paris, has in a forward state, Experimental Researches on the influence of Atmospheric Pressure upon the Venous Circulation, Absorption, and the Prevention and Cure of Hydrophobia, and the Symptoms arising from every species of Poisoned Wounds. The Rev. Fred. Nolan, is printing at his private press, Harmonical Grammars of the Principal Ancient and Modern Languages, viz. the Greek, Hebrew, Chaldee, Syriac, and Samaritan, the Italian, Spanish, Portuguese, German, and Modern Greek: the work will be in octavo. OMOGRAPHY.-The Invention of a new art by a M. Aiguebelle, of Paris, to which the name of Omography has been given, is talked of: it is said to afford an extraordinary facility in executing, not only all that has hitherto been done by engraving and lithography, but also the effects of the pencil and the stump, which neither the graver nor the crayon has yet been able to accomplish. Mr. Curtis has in the press, a fourth edition of his Treatise on the Physiology and Diseases of the Ear, in which he has shewn what may be performed in Acoustic Surgery, particularly in cases of Deaf and Dumb. There is announced, as preparing for publication, a Work by P. F. Robinson, Architect, containing a series of Designs for Farm Buildings, with a view to prove that the most simple forms may be rendered pleasing and ornamental bya proper disposition of the rudest materials. In the course of the work, the village church and parsonage, will be introduced together with the schoolhouse. Occasional ideas will be added for ornamental root-houses, and seats to decorate the Pleasure Ground, LONDON: SHACKELL, ERROWSMITH, AND HODGES, JOHNSON'S-COURT, FLEET STREET. THE London JOURNAL OF ARTS AND SCIENCES. No. LXIX. Recent Patents. To MATTHEW BUSH, of West Ham, in the County of Essex, Calico Printer, for his Invention of certain Improvements in Machinery, or Apparatus for Printing Calicoes and other Fabrics. [Sealed 7th October, 1824.] · THE principal feature of novelty claimed under this patent is the employment of small rollers with engraved surfaces, for printing portions of the calico or other fabrics with any desired pattern, which the patentee denominates repeating rollers. The general construction of the machinery to which these rollers are adapted does not appear to be new, and is therefore only introduced to shew the manner in which the repeating rollers are to VOL. XI. X X be employed; but as there is much ingenuity in the contrivances, and we are not aware that the same sort of machinery has been published before, we shall exhibit them, and explain their constructions and operations, that the intentions of the patentee may be more perfectly understood. Plate XVII. fig. 1, is a section taken crosswise of the machine; fig. 2 is a section taken lengthwise, in which the mode of passing the calico or other fabric through the machine and the progress of the printing apparatus will be clearly seen. a, is a central standard, supporting the bed, b. Upon this bed an endless blanket, c, c, is extended, and passed over a series of rollers, several of which being in an apartment beneath that wherein the machine stands, are not shewn in the figure. The cloth or other fabric about to be printed, is to be coiled upon a roller, which is placed in bearings below. From thence the cloth proceeds upwards in the direction of the arrow, over a guide roller to the bed, b; and being stretched smoothly over the bed breadthwise, the fore end of the cloth is conducted down between the tension rollers, d, to the receiving roller. The repeating roller above described, by which the print is to be given to the cloth, is shewn at e; its surface is engraved with a pattern, and it is mounted in a carriage having arms, f,f. Above the roller is a box, g, which contains the printing-ink, and the ductor rollers which communicate the ink to the printing roller: there being flexable scrapers as usual, acting against the surface of the printing roller, to remove the superfluous ink. The upper part of the carriage, ƒ, has a stem, h, passing through a socket in the sliding frame, m, and upon the top of this stem a weighted compound lever, i, bears for the purpose of giving pressure to the printing roller, e. The weight,j, at the end of this lever, can be increased or diminished at pleasure, so as to give a greater or less pressure to the printing roller, which as it traverses across the table, produces the printed pattern upon the cloth. The evolutions of this machine are effected by a rotatory power, applied to the axle of the wheel, k, which by means of a bevel gear and crank, (not shewn in the figure, but which may readily be conceived,) gives a reciprocating motion to a connecting rod, l, attached by a joint to the sliding frame, m, of the carriage of the ink box, ductor, and printing roller, and thereby moves the carriage to and fro. This frame, m, slides upon the side ribs, n, n, of the standards, and moves very steadily, so as to guide the printing roller, in a perfectly parallel course: which having passed over the breadth of the cloth, and given the impression, runs up an inclined plane, o, while the cloth is shifting ready to receive another impression on the return of the printing roller, caused by the crank above mentioned, in its rotation pushing the rod, l, back again, and thereby driving the sliding frame, carriage, printing roller, and its appendages to the opposite side. The traversing of the printing roller being now understood, as caused by the reciprocating action of the crank rod, l, the mode by which the cloth is shifted after having been printed is next to be explained. The wheel, k, has two segments of teeth upon its periphery which are calculated to take at intervals into the toothed wheel, p, upon the axle of d, one of the rollers, by which the tension of the cloth is effected: and by giving a certain quantity of revolution to this roller, causes a certain length of the endless web, and the cloth with it, to be drawn over the table. |