309
Siebe, Augustus, 5 Denmark Street, Soho —Inventor and Manufacturer.
Three-motion diving machine air-pump, with a figure. a man equipped in a diving dress and helmet for work-under water. The annexed figure represents thediver’s dress, &e.
Figure representing the Diver’s Dress.
Vase made of the wood and metal of the wreck of theUo l’al George, sunk at Spithead in the year 1782.
^ Geary, Stephen, 19 Evston Place, Euston SquareInventor.
Model of a patent stationary fire-engine, fitted _ up^ lt! »n the pedestal of a lamp or other post, or fixed m aoast-iron framed box under the pavement, containing
hose-pi pe> & c .
Improved Venetian perforated blind and shutters.Model of stone-paving for streets, Sec., by trams framedti a new principle. . .
Model of improved railway carriages, containing openoupees and accelerating driving-wheels, with model of aIw , a y truck for running narrow gauge trains on ther °ad gauge lines.
® Green, Ben., 3 Arcade, Newcastle-upon-Tyne
liJ ^ f odel of the central ®rchof r the Ouse-bum and.Wil-n gton viaducts of the Newcastle and North Shields •^Uway, erected by John and Benjamin Green, m 183/ : 8.geometrical drawing and view of the Ouse-burn via-*7>V a ^° Willington viaduct.
Cn P* ers an ^ abutments are of stone; each arm isexposed ^ three ribs, formed to the proportionate curvelo-wn m the modeK Ever rib is put together wuhtwl * d ? ck deal s, in lengths of from 20 to 45 feet, and. °f the deals in width. The first course is formed ott ' ° r h0le deals in width, anO the next of one whole andis «kalf deals ; and so on alternately until the whole ribthi Each rib consists of 15 deals in height or
lvrp C i° ess ’ an d the ends are butted one against the other,raiD + “ lg ^°int, so that no two of the horizontal or1 ln S > joints shall come together; the whole are con-with oak trenails, or pins, each of which passesden? U i tkree °f the deals in thickness. Between everyto « ^ ^ a ycr of brown paper, dipped in boiling tar, is laid,to tke i° in ts from being affected by wet, and soas
€rif u a p timbers bed tightly one upon another. Thesocle f rib are inserted into large cast-iron shoes or
the 6 S ’ are first fixed to the springing stones of
awl secured with long iron bolts, four totoo- ! t F iate > . rvm in with lead; the three ribs are connected^ ter with diagonal braces and iron bolts,accoi s P an drils formed by the arches, being great, onnt of the span, the framing is made in proportionate
strength. A beam, 14 inches square, is fixed about themiddle of the spandril, inclining upwards to the crown ofthe arch, from which struts are carried, both above andbelow it; the above, are perpendicular to the longitudinalbeams of the roadway,—and those below, are radiating tothe centre of the arch.
The longitudinal beams under the roadway are 14 inchessquare, and transverse joists, 3 feet 6 inches apart, andprojecting about 2 feet on each side, are laid across toreceive the 3-inch planking, which is covered with a com-position to form a roadway.
The spandril-framing is connected and hound, both tothe roadway and to the ribs, by means of iron bolts,straps and keys, in the different situations shown on themodel. One of the radiating struts in each spandril iscarried on from the rib to the longitudinal beams, passingthrough and run down the piers about 8 feet.
In this system of timber-bridge building, the straighttrussing in the main principle of support is dispensedwith, for the spandril-framing must not be looked uponas such; it is merely a combination of wood-work, toconvey the weight coming upon the roadway oil thesimple curved rib, and all timbers in -a state of tensionare avoided; for when a weight comes upon a roadway,the whole structure undergoes compression.
[The cost of the Ouse-burn viaduct was 24,50(1. Thatof the Willington viaduct was 23,002/. It was whenengaged in designing the bridge for crossing the RiverTyne at Scotswood, in 1827-8, that Mr. Green first pro-jected the laminated arch; but the depth of water, itsrapidity during floods, and the uncertainty of the foun-dations, rendering the building of many piers expensive,caused Mr. Green to recommend a suspension bridge atthis spot. On the day of opening of this suspensionbridge, 12,000 persons rushed on at once, when the weighton its centre was not less than 468 tons, and it provedcapable of sustaining this weight.—S. C.]
Model of the monument erected on Pensher Hill to thelate Earl Durham, in 1844.
Geometrical drawing, in colour, of the first proposedwooden bridge with stone piers across the Tyne , at New-castle-on-Tyne , at a high level, in 1838.
Geometrical drawing, in colour, of design for the pro-posed high-level bridge, in stone and iron, at Newcastle-on-Tyne , in 1841.
Plan from Gateshead, through Newcastle , in the line ofthe high-level bridge, 1841.
View of Scotswood wrought-iron suspension bridgeover the Tyne , erected in 1828-9.
View of the monument erected on Pensher Hill.
Model of the Grey Column at Newcastle-on-Tyne , 1837.
View of Grey Street, Newcastle-on-Tyne , as designedprevious to its commencement.
View of the interior of the library of the Literary andPhilosophical Society, Newcastle -on-Tyne.
4 M‘Kirdy, J. G., Birltwood, Lesmahaejo, Scotland —
Producer.
Model of a wooden bridge, for foot passengers, 46 feetspan, besides 2 feet of bearing at each end. All the prin-cipal timbers incline to one centre, thereby forming, as itwere, three arches. It may be erected (on piers, rocks,or piles) at little expense beyond the materials.
5 Asser, Louis, 147 Regent Street — Inventor.
Model of a bridge. The invention consists of blocks of
a form which may be applied to stone, iron, wood, orother materials in the construction of bridges, tunnels,breakwaters, &c. From the form of these blocks, andtheir mutual bearing, the pressure is equally distributedover the whole mass.
6 Riddell, Thos., 1 Market Terrace, Southgate Road,
Islington —Inventor.
Model of a building, showing how talc may be usedinstead of glass.