234 



THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 



[July, 



hour, or 110 feet ; the saving is, therefore, one half. These burners have 

 been subjected to the most severe scrutiny ; they have been examined and 

 tested by some of the most expert experimentalists, and have passed the 

 ordeal ; and all who have had an opportunity of examining and proving them, 

 concur in awarding to them the highest praise. The Boccius light has been 

 introduced in the Birmingham Gallery, 1 where both the features and statues 

 were better seen by a clear than an obscured light. The students there 

 (and, perhaps, on such a point their evidence is of value), state they can 

 draw as well by the aid of the Boccius light as with daylight, the shadows 

 being as perfect as those produced by sunshine. Mr. Moxon's Hall of Com- 

 merce in Threadneedle-street, is illuminated with this light. It has also 

 been erected at Charing Cross for some months, where it brilliantly illumines 

 that great thoroughfare for a considerable distance. The advantages which 

 the patentee proffers to the public, and proves his light to possess, are, 



1st. Obtaining the greatest quantity of light from the least quantity of gas. 



2nd. From the small quantity of gas consumed, the trifling amount oi 

 deleterious gas produced. 



3rd. From the same cause the comparatively small amount of heat gene- 

 rated. 



4th. From the complete combustion, the impossibility of escape of the 

 noxious inflammable gas into the air. 



5th. The complete absence of soot and smoke. 



6th. The durability of the apparatus, and the ease with which it is man- 

 aged. 



7th The possibility of applying with success, the principle to burners of 

 all sizes, from one consuming 1 foot, to another consuming 100 per hour. 



8th. The easy mode of \entilation it affords, either by placing a ventila- 

 or in the roof immediately above the light if it communicate with the air. 



The light may be seen at any time at the office of the patentee, 14, Duke- 

 street, Adelphi. 



Fig. 1.— Section. 



Fig. 2.— Plan. 



■ Tins picture gallery was illuminated with the Boccius light forsix weeks, 



and gave satisfaction ; it was formerly lighted by 30 bats wings consuming 



1,000' feet an hour : but with 3 Boccius burners, consuming 225 feet an hour, 



lhle the amount of light was obtained ; thestamary room was, also, lighted 



one consuming 75 ttet an hour instead of 22 bats wings, which used to 



" 110 Iprt .in linn r 



PATEN f'SAOTAPE NOSING. 



Patented by Arthur C. Tcpper. 



The improvements in lay- 

 ing down carpets, and other 

 materials upon stairs and 

 steps, and in the construc- 

 tion of stairs and steps, and 

 for which Mr. Tupper has ob- 

 obtained a patent, maybe ar- 

 ranged under two heads : the 

 Nosing and Stair Rod. In 

 staircases in present use, and 

 where landlords will not go 

 to the expense of having new 

 nosings, Mr. Tupper proposes 

 cutting through the tread 

 obliquely close to the nosing, 

 as shown in Fig 1., and in. 

 the slit so made the carpet passes through. To insure support, it is proposed 

 that the stair-rods be made of an arch-like form, as shown in Fig 2., with the 





110 feet an hour. 



apex placed under the nosing, it will be tbe means, also, of preventing the 

 stair rod from bulging and getting out of the " eyes ;" these arch-stair rods 

 are capable of being ornamented to any extent. 



The separate nosings can be made not only 

 of wood, as wainscot, mahogany, &c, but also 

 of or-molu, iron, brass, &C. ; and these can. 

 be applied to stone and wooden stairs. As 

 regards the fixing. Mr. Tupper proposes using 

 a wrought iron stud and plate ; but this can, 

 be effected, also, by screws, bayonet joints, 

 rings, grooves, &c, so that the carpet, &c. can 

 be either placed, and the nosing applied over 

 it, or the nosing moving on hinge, can lift up 

 and the carpet be placed as usual. The no- 

 sing so applied, not only preserves the carpet 

 from the wear caused by the attrition of the 

 feet, but also takes up less of the fabric used, 

 as there is a saving of about 2 inches of car- 

 pet upon every stair ; this method also pre- 

 vents the carpet from " wabbling about," aad 

 here it is especially useful in winders and angu- 

 lar stairs. In these moveable nosings two or 

 more pieces of metal can be attached, which 

 can be ornamented to any extent, and fastened 

 in such a manner, as, when the nosing is fixed 

 in its place, the carpet is firmly clamped by these " stays," doing away in 

 this case with stair rods and eyes. It is presumed that the appearance of a 

 staircase will be greatly improved by this method, as the nosings can be or- 

 namented and decorated in various ways ; for instance, if a mansion is of 

 the Elizabethan age, the nosings, as well as the banniater and handrail, cau 

 be arranged in the beautiful style of that period. 



An enlarged model showing a variety of methods of forming the nosing, 

 is exhibited at the Polytechnic Institution. 



I.i nch of the Steam- Fhjoate ••Imirvu.. '—Woolwich, Jun« I.— -This 



beautiful firs: class steam-frigate was built on the same >iip in the dockyard 

 as her sister, the Devastation, which has given such great satisfaction owing 

 to her seaworthiness and other qualifications, and was launched on the 31st 

 of May. 



The following are the dimensions of the Infernal ■■— 



h'eet. 

 Length between the perpendiculars .. 180 



Length of keel for tonnage .. .. 156 



Breadth, extreme .. .. ■• 36 



Breadih for tonnage .. •■ ■• 35 



Breadth, moulded" .. .. •• 35 



Depth in engine room . . • • 1 



Burden in tons, obi plan, 1058. 

 Burden in tons, new plan, 1027. 



Inches. 

 



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