for improvements in apparatus used with curtains, blinds, maps, and plans. August 1; six months. John Shaw, of Glossop, Derby, musical instrument-maker, for certain improvements in air guns. August 1; six months.

Augustus Roehn, of Paris, gentleman, for improvements in making roads and ways, and in covering the floors of court yards, buildings, and other similar places. (Being a communication.) August 1; six months.

James Murdoch, of Staple's Inn, mechanical draughtsman, for certain improvements in converting sea water into fresh, and in ventilating ships and other vessels; applicable also to the evaporation of liquids, and to the concentration and

crystallization of syrups and saline solutions. (Being a communication.) August 1; six months;

John Parkinson, of Bury, Lancaster, brass founder, for improvements in machinery or apparatus for measuring and registering the flow of liquids. August 1; six months.

Benjamin Aingworth, of Birmingham, buttonmaker, for improvements in ornamenting iron and other metals for use in the manufacturing of gunbarrels, and all other articles to which the same ornamented metals may be applied. August 1; six months.

David Clovis Knab, of Leicester-place, civil engineer, for an improved apparatus for distilling fatty and oily matters. August 1; six months.

WEEKLY LIST OF DESIGNS FOR ARTICLES OF UTILITY REGISTERED.

Proprietors' Names.

George Price............... Birmingham........................... Stove.
Sabina de Canlier Coleman-street, City ........... "The Ottoman Cradle."
Miller and Co............ 370, Oxford-street.................. Bedside or other table.
George West............... Riccarton, Linlithgow.............
Tile machine.
Robert William Wright 39, Devonshire-street............... Compound signet and keeper

ring.

MPANS

Wharf Road, City Road, London.

IT cannot now be doubted even by the most sceptical, but that GUTTA PERCHA must henceforward be regarded as one of the blessings of a gracious Providence, inasmuch as it affords a sure and certain protection from cold and damp feet, and thus tends to protect the body from disease and premature death. Gutta Percha Soles keep the feet WARM IN COLD, AND DRY IN WET WEATHER. They are much more durable than leather and also cheaper. These soles may be steeped for MONTHS TOGETHER in cold water, and when taken out will be found as firm and dry as when first put in.

Gutta Percha Tubing,

Being so extraordinary a conductor of sound, is used as speaking tubes in mines, manufactories, hotels, warehouses, &c. This tubing may also be applied in Churches and Chapels, for the purpose of enabling deaf persons to listen to the sermon, &c. For conveying messages from one room to another, or from the mast-head to the deck of a vessel, it is invaluable. For greater distances the newly-invented ElectricTelegraph Wire covered with Gutta Percha is strongly recommended.

Mill Bands.

The increasing demand for the Gutta Percha strapping for driving bands, lathe-straps, &c., fully justifies the strong recommendations they have everywhere received.

Gutta Percha Pump Buckets, Clacks, &c.

Few applications of Gutta Percha appear likely to be of such extensive use to manufacturers, engineers, &c., as the substitution of it for leather in pump buckets, valves, &c. These buckets can be had of any size or thickness WITHOUT SEAM or JOINT, and as cold water will never soften them, they seldom need any repair.

Gutta Percha Picture Frames.

The Gutta Percha Company having supplied HER MAJESTY THE QUEEN with several elaborate Gutta Percha Picture Frames for Buckingham Palace, which have been highly approved by the Royal Family, fully anticipate a great demand for frames from the nobility throughout the country. In order that the picture-frame makers may not be injured, the Company will supply the trade with the mouldings, corner and centre pieces, &c., and allow them to MAKE UP the frames. Pattern books for the trade are now ready.

Gutta Percha soles, solution, inkstands, card-trays, medallions, picture-frames, brackets, mouldings, window-blind cord, soap-dishes, tap-ferrules, cornices, vases, fire-buckets, bowls, pen-trays, stethoscopes, thin lining, thread, flower-pots, ear-trumpets, &c., &c., manufactured at the Company's Works, Wharfroad, City-road, London; and sold by their Wholesale dealers in town or country.

MUSEUM, REGISTER, JOURNAL, AND GAZETTE.

No. 1357.]

SATURDAY, AUGUST 11, 1849. [Price 3d., Stamped, 4d.
Edited by J. C. Robertson, 166, Fleet-street.

FISHER'S PATENT IMPROVEMENTS IN COKe ovens. [Patent dated February 8, 1849. Patentee, Mr. Henry Fisher, of Upholland, Lancashire. enrolled August 8, 1849.]

MR. FISHER'S specification is of great length, but the improvements which it describes are, with a few exceptions, of so practically useful a character, and likely to exercise so much influence on the future progress of the important branch of manufacture to which they relate, that we must endeavour to find room for it in full, with the omission merely of the formal parts.

The first branch of Mr. Fisher's improvements (to which we shall confine ourselves in the presen: Number) is introduced by the following general considerations:

As coke ovens are now commonly constructed, the air employed to keep up the combustion during the process of coking is admitted near to the surface of the burning mass, and though great pains are in some cases taken to diffuse it equally over the entire surface, yet owing to the close contact of the air with the coal, there is always a considerable portion of the air which combines with the solid carbon of the coal, and becomes thereby converted into carbonic acid and carbonic oxide, which escapes from the oven. Again; there is usually a very deficient supply of fresh air where it is most wanted, namely, immediately under the crown of the arch, where the gases accumulate; the consequence of which is that a considerable portion of these gases passes off unconsumed. From these different causes, there is always a great loss in the yield of coke produced from a given quantity of coal, and also a less quantity of coke manufactured in a given time from a given superficial area of oven. The quality of the coke produced is also impaired; for the hotter the oven, and the more the crude materials are kept from direct contact with the atmospheric air, the greater always is the yield and the denser and purer the coke. Moreover, the quantity of gases which escape in an unconsumed state from ovens into the atmosphere is frequently much increased by their being allowed to pass directly from each oven into the atmosphere. Attempts have been made to remedy this evil by causing a number of ovens to discharge themselves into one common flue terminating in a lofty chimney; but though by this means most of the gases are consumed before passing into the atmospheric air and a saving of heat is effected, yet the chimney produces an excessive draught from

Specification

the ovens, and through all the air flues into the ovens, which is injurious to the quality of the coke, and causes a decreased yield from a given quantity of coal or slack. It is not more necessary to the production of good coke that the heat should be great than that the draft into and from each oven should be gentle, and equably maintained during the process of coking.

The object, therefore, of Mr. Fisher in this first branch of his invention is so to construct the oven that "there shall always be a due supply of atmospheric air admitted into the oven after the first ignition of the coal or slack, and that the bulk of the supply, shall be introduced at as great a distance as may be, from the ignited materials, and thereby completely combine with, and effect the perfect combustion of the gases arising from the same."

The better to accomplish these various objects, I construct the ovens in the manner represented in figs. 1 to 11, both inclusive of the figures annexed.

Fig. 1, is a front elevation of an oven with the door open.

Fig. 2, a back elevation.

Fig. 3, is a plan of two of a series of
ovens, the same as figs. 1 and 2.
Fig. 4 is a longitudinal section on the line,
B C, of fig. 3.

Fig. 5, a longitudinal section on the line,
M M, of fig. 3.

Fig. 6, is a longitudinal section on the line, K L, of fig. 3.

Fig. 6", a transverse section of a single oven on the line, RS, of fig. 3.

Fig. 7, is a section on the line, ND, of fig. 3.

Figs. 8 and 9, represent a section on the line, O P, of fig. 3.

Fig. 10, is a view of the interior of the oven on a horizontal line above the door.

Fig. 10, is a view of the floor of the oven, with the door and back opening closed.

Fig. 11, is a view of the floor with the door and back opening open.

A, figs. 2, 3, 4, 5, 6, is the main flue, which is carried on the top of the back wall, and leads the gases arising from a series of ovens into the chimney; a a, (figs. 1, 2, 3, 4, 6, 6, 7, 8 and 9,) are passages which convey the air from the front and back of the oven over and down through the arch, into the interior of the oven, where the gases