18^7. 



THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 



319 



pedestal with vibrating bjx; fig. 2, cross section of the same; fig. 3, 

 horizontal pliin; fig. 4, vibrating box; fig. 5, bearing of vibrating box. 



Fig. 3. 



Fig. 4. 



A, A, pedestal forming part of the wrought iron frame. B, vibrating 

 box resting with the two pivots b, b', which are firmly attached to 

 Fig. 5. it in openings of the two sliding pieces, c, c'. 



Fig. 5, shows an end view of one of the latter, 

 with its flanges, m, m', and the hole, a, which 

 is to receive the pivot, 6. These sliding-pieces 

 are connected, by means of screws, x, x', with 

 the cross-piece, d, the lower surface of which 

 is cylindrical, and forms a bearing for the upper 

 convex surface, n, n\ of the box, B. /, wedge, 

 kept by the set-screw, f', in a position which 

 allows the box to slide in the pedestal, without 

 being too loose or too firm, g, oil-box. In fig. 

 4, this oil-box is omitted. The same parts are 

 marked by the same letters in the different 

 views.— FranA/r'n Journal. 



ENGLISH PATENTS, 



LOCOMOTIVE ENGINES. 



George Fossick, engine-builder, Thomas Hackworth, engine- 

 builder, and Thomas Elliott, superintendent of locomotives, all of 

 Stockton-upon-Tees, for "certain Improvements in locomotive and 

 other fcozYers."— Granted March 3; Enrolled Sept. 3, 1847. [Reported 

 in the Patent Journal.'\ 



The improvements here specified relatej first, to the form or shape 

 of the fire-box of locomotive and other tubular boilers ; secondly, to 

 the arrangement of the tubes ; thirdly, dividing, in boilers of large 

 diameter, the fire-box into two portions, by means of a vertical divi- 

 sion. 



The patentees in the specification of their first improvement state : 

 we make the fire-box of a semi-cylindrical shape, coi responding in 

 form to the cylindrical shell of the boiler, the top or roof of the tire- 

 box being slightly curved ; this roof is to be supported and sustained 

 by the addition of wrought-iron stays, |ilaced across the upper side of 

 the roof and rivetted thereto; as with fire-boxes of the usual con- 

 struction, the end of the fire-box is closed by a thick flat plate, gene- 

 rally termed the tube-plate, through which the tubes pass as usual. 

 The outer or open end of the fire-box is closed by double or treble 

 plates, having a door formed of double or treble plates made therein, 

 and an opening to the ashpit beneath the said door; a bridge is 

 placed, as usual, transversely in the fire-box, and the fire-bars are pro- 

 perly supported by bearing-bars, at a suitable height in the fire-box, 

 as is usual in boilers with tubular or enclosed fire-places; the shell or 

 case of the boiler is stated and represented by the patentees as cylin- 

 drical the vfhole length of the boiler. 



The patentees state their second improvement to be the arrange- 

 ment of the horizontal tubes through the boiler from the fire-box to 

 the smoke-box ; these tubes the patentees place in vertical rows, and 

 not, as they are usually arranged, in diagonal or horizontal rows; this 

 arrangement of vertical rows allows a free space between each row of 

 tubes, thereby allowing a free and uninterrupted passage for the es- 

 cape of the steam, generated by the lower tubes : the patentees also 

 state the facility this improved arrangement possesses of allowing the 

 cleansing of the tubes from incrustation and sediment from the water, 

 by a proper scraper or cleaner, being passed down the opening be- 

 tween the vertical rows of tubes, and thereby removing any sediment 

 or incrustation from them. 



The patentees state their third improvement to be the employment 

 or introduction of a vertical division of water space, placed within 

 the semi-cylindrical fire-box, and thereby dividing the said fire-box 



into two separate compartments; this arrangement the patentees pro- 

 pose adopting when boilers of increased diameter are required. 



The patentees after describing the above improvements claim, first, 

 the forming the fire-box of locomotive and other boilers of a semi- 

 cylindrical shape, but slightly curved upon the upper side, and carry- 

 ing the tubes from the said semi-cylindrical tire-box in such manner 

 as agreeing with the general form of such fire-box, as hereinbefore 

 described. Secondly, the patentees claim the arranging the tubes in 

 locomotive and other boilers known as tubular boilers, in vertical rows, 

 whereby a free and uninterrupted passage is obtained between such 

 vertical rows from bottom to top, as hereinbefore described. Thirdly, 

 the patentees claim the use and arrangement of vertical divisions, 

 within the fire-box, of boilers, dividing such tire-boxes into separate 

 compartments or tire-places, as hereinbefore described. 



IMPROVEMENTS IN FURNACES. 



George Grundy, of Manchester, in the county of Lancaster, mana- 

 ger, for " certain Improvements in furnaces, and in the Jtues and tiles 

 used in the construction thereof." — Granted February 8 ; Enrolled Aue. 

 8, 1847. 



This invention relates to a novel arrangement of the flues and other 

 parts of a furnace, whereby the heat is more effectually applied ; and 

 also in certain tiles to be used in the construction of the furnace. The 

 annexed engravings show a, furnace, constructed according to this in- 

 vention, containing four fire-clay or tile cylinders or retorts, for gene- 

 rating coal gas. 



Fig. 1 



Fig. 4. 



Fig. 3. 



Fig. 1 is a longitudinal vertical section of the furnace ; fig. 2 is a 

 transverse vertical section thereof; fig. 3 is a horizontal section, taken 

 on the line A B of fig. 2; fig. 4 is a similar section, on the line 

 C D; and fig. 5 is a section on the line E F. n is the brickwork of 

 the furnace. 6 is the fire-place or chamber, wherein the fuel (which 

 in this case is coal-tar, but other fuel may be used) is introduced ; it 

 extends the whole length of the furnace, and is supplied with air 

 through the openings c, from two parallel flues d, which extend from 

 one end of the furnace to the other, and are furnished with doors at 

 each end to regulate the supply of air. The oven, in which the tile 

 or fire-clay cylinders or retorts e are fixed, is of the ordinary shape; 

 and the course of the flame and heated gases, generated below, is in- 

 dicated by the arrows in the horizontal sections, figs. 3, 4, 5, which 

 are taken at diflierent levels, in order (o show the continuous traverse 

 of the heated gases from end to end, or from end to centre of the re- 

 torts e, until they escape through the opening/, in the crown of the 

 oven. The cylinders or retorts are made of tile or fire-clay, and may 

 be strengthened, if considered requisite, by imbedding metal hoops 

 in the clav. Each cylinder is open at both ends, and consists of 

 several pieces, which are jointed together, as seen at g, fig. 5; the 

 joints being made good with fire-clay, and supported by the tire-clay 

 liles h. The number of joints in each retort will depend upon its 



