NORTH, NORTH CENTRAL, AND SOUTH CENTRAL GALLERIES. measured. It is painted so as to combine both geography and geology, the phenomena being carefully delineated. A blowpipe giving an uninterrupted and regular flame for chemical analysis and other purposes. An oxyhydrogen microscope, with new safety tubes and an adaptation of the blowpipe for chemical and other purposes, also an arrangement for collecting the gases separately. Manufactured by C. W. Collins, Royal Polytechnic Institution, Regent Street. 460 NEWBERRY, F., Stoke Newington Green-Producer. Electrotypes. 464 HARRISON, JOHN, 2 Chorlton Terrace, Upper Brook St., Manchester-Inventor and Manufacturer. Electrical battery, intended as a substitute for the Leyden jar. Galvanic battery, combining the inventions of Professors Smee and Faraday, with a new mode of connexion for producing either quantity or intensity of the electric current. 464A HARRISON, J., 45 Upper John Street, Fitzroy Square Manufacturer and Inventor. Model of action generally used by pianoforte manufac turers. Model of registered boudoir pianoforte; action to show in what the improvement consists. Pianoforte with the registered action. 465 WELLWAY, JOHN SWEET, 7 Denmark Street, Bristol -Inventor and Manufacturer. Syphon trough, for galvanic battery, made of gutta percha and vulcanized India-rubber; tubes passing from the bottom of each cell to a main tube, form a siphon, by which the trough may be emptied when out of use; a gutta-percha valve, of new construction, closes the main tube when the battery is in use. Registered gas-carriers' apparatus, rendering gas portable. A drum revolving horizontally, by means of a spring between the ceiling and floor of the room above, round which several feet of glazed vulcanized Indiarubber tubing are coiled, which communicate with the main gas-pipe of the house. When in use, one end of the flexible tube is attached to a portable lamp-stand, which, when carried to a distant part of the room, is allowed to recede by the unwinding of the flexible tube; when the light is brought back, the revolving drum winds up the tubing. When out of use, the tubing is detached from the lamp-stand; it is then immediately coiled up by the drum. 466 TAYLOR, THOMAS, 17 Fleet Street, Dublin-Inventor. Pneumatic battery, for igniting gunpowder in the blasting used in mining operations. Each cell is filled with sulphuric acid. The operator, blowing through the gutta-percha tube, forces the sulphuric acid out of each cell through the short siphon tubes; it then comes in contact with a compound of the chlorate of potass, loaf sugar, and gunpowder, when an explosion takes place. The gutta-percha tube may be of any length, thus placing the operator in perfect safety. 467 KIRKMAN, JOSEPH, & SON, 3 Soho Square, and 9 Dean Street-Manufacturers. Miniature model of a grand pianoforte, six and threequarter octaves, metal braces, and drilled bridges. Seven octave, full grand pianoforte, with repetition action, in rosewood case. The fonda semi-grand pianoforte, in walnut case. 468 GREINER, GEO. FREDERICK, 51 Upper Marylebone Street, Portland Place-Inventor and Maker. Semi-grand pianoforte, constructed on the principle of the speaking-trumpet, with unison tuning-screws, and 482 HOLDERNESSE, CHARLES, 444 New Orford Street --Manufacturer. Cottage grand pianoforte, 67-octave, in a carved walnuttree wood case (the design registered); with repeating check action. 483 ALLISON, RALPH, 108 Wardour Street, Soho, and 34 Brook Street, New Road-Manufacturer. A walnut-tree cottage pianoforte, with carved figures, and inlaid with flowers in woods of natural colours, check repetition action, &c. 484 JENKINS, WM. & SON, 10 London Street, Fitzroy Square-Inventors and Manufacturers. Registered expanding and collapsing pianoforte for gentlemen's yachts, the saloons of steam-vessels ladie' cabins, &c.; only 13 inches from front to back when collapsed. Cabinet pianoforte in figured walnut-tree, carved and ornamented in the Elizabethan style. 486 HUND, FREDERICK, & SON, 21 Ebury Street, Pimlico -Inventors and Manufacturers. New kind of cottage pianoforte, called the "Lyra."Provisionally registered. The "Lyra" stands on a peculiar constructed platform, or sound conductor, into which the bass strings extend; and although the instrument is only 3 feet 5 inches in height, it produces a tone equal to a semi-grand. |