1844.] 



THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 



4fd 



THE HIMALAYA FUNNEL, 

 For the Cure of Smohj Chimneys, Registered pursuant to Act of Par- 

 liament, G Sf 7 Vic. c. G5. iiole Proprietors, James Boyd and <Son, 

 7S, IVelbeck Street, Cavendish Square, London. 



The principle upon which 

 this apparatus is constructed, 

 is that of conducting the 

 smoke through apertures in 

 the sides of the cliimney shaft; 

 into an outer case of consider- 

 able length, which extends 

 above the top of the chimney, 

 and is open both al the top 

 and bottom, the chimney shaft 

 itself being perfectly closed at 

 the top. A current of air 

 thus passes vertically through 

 the outer case ; and, in con- 

 formity with an establislied 

 law, both of pneumatics and 

 liydraulics, that when two cur- 

 rents of fluid matter passing 

 in the same direction, but in separate channels, arrive at any point of 

 confluence, the stronger current draws along in its course, and with a 

 considerable portion of its own velocity, the weaker current: so the 

 force of the wind, which checks in other instimces the action of a 

 chimney draught, in this is made to produce a stronger draught ex- 

 actly in proportion to the violence with which it blows. Whether 

 the wind blows upwards or domtuvards through the outer case the 

 effect is the same, as the chimney shaft is closed at the top. The 

 Himalaya Funnel thus becomes a perfect wind guard, equally appli- 

 cable for increasing the draught, whether exposed to horizontal or 

 vertical currents of wind; and will therefore remedy the largest class 

 of smoky chimneys, which are those arising from high winds and 

 doronward currents, xixoAaee A by adjacent buildings of greater eleva- 

 tion, or by anj" other external cause ; and for all such defects it must 

 be an infallible remedy. The conical projection upon the funnel a 

 tew inches below the exterior c;ise (see Engravings) is intended to in- 

 crease the effect of horizontal currents of air, by deflecting them up- 

 wards between the funnel and the exterior case, at the same angle at 

 which they strike upon the s.iid projection, and thereby assist the 

 efflux of the smoke ; but no air [lasses into the interior funnel, either 

 at the conical projection or elsewhere. And in order still further to 

 increase the effect of horizontal currents of air, the conical projection 

 on the top edge of the outer case (figure 2) may also be used when 

 required. The Funnel may be constructed of zinc, iron, or other 

 metals. It is extremely simple — notliableto derangement — is readily 

 swept by the ordinary machine — eflectually excludes rain — and being 

 perfectly devoid of machinery, it possesses great advantages over ali 

 revolving chimney tops or cowls, winch are liable to continual de- 

 rangement by their exposure to the weather. 



THE HERMETIC CHIMNEY VALVE, 



For Preventing Dommoard Draughts in Chimneys ivhen mithout a Fire, 

 Registered pursuant to Met of Parliament, (5^7 Vict. c. 65. Sole 

 Proprietors, James Boyd and Son, of Wtlbeck Street, London, 

 The inventors propose (o substitute the Hermetic Chimney Valve, 

 which is very simple and efficacious, for the imperfect smoke doors 

 hitherto fitted to register stoves, which have proved totally inade- 

 quate to exclude from chimneys, out of use, the intolerable nuisance of 

 downward draughts, and the accompanying annoyances of sulphureous 

 smell, smoke, soot, &c. This evil so much complained of, but hitherto 

 so imperfectly remedied, is particularly found to prevail where two 

 or more chimneys are connected with one apartment, or, more fre- 

 quently, where two or more apartments, each having a chimney, com- 

 municate with each other. In such cases, the air withdrawn by a fire 

 burning in one chimney, instead of being replaced by fresh air from 

 the staircase or interior passages of the building, is more readily sup- 

 plied by the nearest chimney shaft, in which the specific gravity of 

 the air is greater than the warmed air of the apartment, and thus 

 downward draught is produced. In the vast majority of cases, this 

 can alone be prevented by effectually closing the chimney through 

 which the air is found to descend; but, owing to the extreme subtlety 



of atmospheric air, it has ever been a matter of difficulty to contrive a 

 chimney door (though many expensive plans have been tried) com- 

 bining the requisite accuracy of construction, with durability and per- 

 fect freedom of working, after exposure to smoke, soot, damp, &c. 

 These desiderata, however, the Hermetic Chimney Valve will be 

 found fully to afford, at a moderate expense ; and being constructed 

 without liinges or fastenings of any description, it cannot possibly 

 become corroded or unsound — may be readily cleansed from any de- 

 posit of soot — is capable of application to any chimney, without alte- 

 ration or removal of the stove in use ; and, as regards durability, is 

 confidently stated to be indestructible. By the use of the Hermetic 

 Chimney Valve, the advantage of an open chimney will be combined 

 with the facility of effectually closing the flue at "pleasure, in cases 

 where a downward current of cold air is found to prevail ; and this 

 invention cannot fail to increase the domestic comfort of those houses 

 where these annoyances at present exist, which, while they are un- 

 pleasant to all, are peculiarly prejudicial to the valetudinarian and the 

 invalid. 



Description of the Drawings, — (a a) are two semi-circular pieces 

 of cast iron, the angular edge (b) of the one being ground and fitted 

 air-tight into the groove (c) on the edge of the otln-r, and the two 

 pieces when together form a circular valve, the circumference of which 

 (D D)is ground into the groove (a) in the plate (f). 



The position of the whole, when together, is shown in the prespec- 

 tive view (G.) The plate (f) is intended to be so fixed horizontally 

 into the brickwork of a chimney, that the circular hole therein shall 

 be the only aperture for the escape of the smoke, and the valve (a a) 

 is intended to close up the opening in an air-tight manner when the 

 chimney is out of use : the valve being in two pieces, may be readily 

 removed from the chimney by the handles or knobs (H ii) through the 

 opening in the plate (f) when required, for the purpose of sweeping 

 the chimney, or lighting a fire. 



JONES'S PENDANT GAS LAMP. 



Registered under the ./let for the Protection of Articles of Utility. 

 James Jones, of Bow Street, Gas Engineer, Proprietor. 



(Communicated hy the Inventor.) 

 This mode of burning gas, to which the inventor directs attention, 

 is till' subject of a registration, and presents a system of discharging 

 the deleterious gases, in many respects superior to all ventilated gas 

 lights which have preceded it. It is peculiarly adapted for consum- 

 ing gas highly carbonized by Mr. Lowe's patent process of napthaiiz- 



