IGO 



THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 



[J UXE, 



nil turns tn m;ike in passinpc through the pump. This prevents the 

 ciuuMission thiit is so nlijectioiialile in many pumps, and enables tliis 

 piniip to be worlit'd niucli (piiclser tlian one of tlie old construc- 

 tiiiii. \Vc consider this, therefore, as a decided improvement in 

 tlie application of douhle-actinf;- engines to the pumping of water, 

 find we hope that so obvious an improvement will speedily secure 

 for itself an extensive ado])tli)ii among the parties interested in 

 tliis department of engineering. 



The following particulai-s give some of the dimensions of the 

 engine : — 



Diameter of cylinder, 90 inches. 



Length of stroke, 3 feet. 



Length of beam from cylinder centre to connecting-rod centre, 

 9 feet ti inches. 



The boiler is cylindrical, with an internal tube, the diameter of 

 the boiler being 4 feet, and of the tulie 2 feet; the length 15 feet. 



The engine works two pumps, both being connected directly to 

 the crank-end of the beam; one of them S inches nearer the cy- 

 linder, and the other 8 inches farther from the cylinder, than the 

 connecting-rod centre. With this arrangement, one pump has a 

 stroke of 31 inches, and the other a stroke of 41 inches. The 

 object of having two pumps is that one may be wrought when the 

 water is being pumped to the higher part of the town, and both 

 used when the water is being delivered in the lower district. The 

 diameter of the plungers in both pumps is the same, viz. 8 inches, 

 and the diameter of the buckets is llj inches. 



It is to be observed that the design is ultimately to work the 

 engine with twn boilers of the above dimensions; but the second 

 one has not yet been fixed. 



In estimating the performance of the engine, the hoi'se-power is 

 taken at 33.000 lb. raised one foot per minute, and the number of 

 liorses'-power is determined by an indicator fixed on the delivery- 

 )>ipe of the pump, which, combined with the speed of the engine, 

 gives the ejfectivc power, exclusive of the friction of both the 

 engine and pump. 



The steam-valve is two short slides connected together and 

 wrought by cams, so as to dispense with the use of a separate 

 ex|)ans!on valve. 



It will he observed that tlie distance from the centre of one 

 pump to the centre of the otlier is only IG inches, and both are 

 fixed in a well of 5 feet square, which shows the great compact- 

 ness of this kind of double-acting pump. With no other kind 

 would it have been possible to put two pumps of this size in so 

 small a space, and at the same time leave sufficient room for exa- 

 mination, repairs, &c. 



BATEMAN AND MOORE'S PATENT HYDRANTS. 



The Patent Fire-Cocks are introduced as substitutes for the 

 inefficient wood plug, at present in general use. Under constant 

 high pressure, they supersede the necessity for fire-engines, as in 

 cases of fire they can be brought into almost instant operation, 



with the most perfect ease 

 and efficiency, and with- 

 out any waste of water. 

 They can be also expedi- 

 tiiMisl)', cheaply, and most 

 etfectively applied to the 

 watering and thorough 

 cleansing of streets, al- 

 leys, courts, public build- 

 ings, windows, Ike. ; in 

 railway stations iov sup- 

 ]>lying engine tenders, 

 cleansing carriages, &c. ; 

 and placed within mills, 

 warehouses, and public 

 buildings, they would af- 

 ford the most important 

 protection against fire. 

 They are also adapted 

 for watering gardens and 

 pleasure grounds, and by 

 the application of suit- 

 able spreaders or jets, for 

 syringing fruit trees, &c. The valve of the cock is closed by the 

 ]iressure of the water, — the great therefore such pi-essure 

 becomes, the more is the tightness of the valve secured, and effec- 

 tual safety from leakage ensured. 



The fire-cock consists of a cast-iron box or casing, containing a 

 self-acting valve, A, closed by the pressure of the water. For 

 street purposes, this casing is attached to a vertical branch from 

 the water main, and when not in use the outlet of the valve is 

 closed by a loose cover or stopper, and the whole protected from 

 injury by a cast-iron case, similar to the ordinary cases or covers 

 for protecting street cocks or fire-plugs. The valve. A, consists of 

 a ball of less specific gravity than water, covered with india-rubber 

 or other elastic substance, and closed by the pressure of the water 

 against a properly prepared seating. 



THE SOCIETY OF PAINTERS IN WATER COLOURS. 



The Exhibition is on the whole superior to last year's. The 

 President, Mr. Copley Fielding, exhibits forty- two works, the 

 best of which are, View near the head of Loch Tin/ (23), — an effect 

 after rain; Vieu! of Siiowdou (120), — the effect of Suowdon in the 

 distance is well sustained; and Scai-lmroiigli (130), — the stormy cha- 

 racter is very good: they all show the artistic powers of Mr. 

 Fielding. The .atmospheric effects he produces with great free- 

 dom. — Air. Cattermole, the delineator of scenes of the Middle 

 Ages, has two excellent studies: — Tlic Chapel (24.2), representing a 

 number of persons at prayers, — it is both picturesque and solemn; 

 and The Call at the Alonasterij (2o3), %vhich is free, graceful, and 

 forcible. — Mr. F. Tayler's Morning (28), and Evening (39), are two 

 masterly productions. The first represents five dogs waiting for 

 the entrance of their keeper,— their faces are full of expression; 

 the latter, when they are tired and weary, and shut up for the 

 night: they are two of the best paintings of this artist. The 

 Chase in the time of Charles II. (144) is equally good; as also is The 

 Stag Hunt in the Last Century (lil). — Mr. De Wint's Wilsford, 

 Lincolnshire (294), and a Hag-Ficlil, are good, particularly the 

 latter; but in a View of Lincoln (139), the water and trees are not 

 at all good, — it appears an unfinished picture. — Mr. George Fripp 

 exhibits some excellent subjects, which all show great finish and 

 effect, particularly The Valley of the Thames near Reading (^5i); in 

 The All'e Jilanche, Mount Blanc (111), the mountainous scenery is 

 well shown, — this is the best; and The Weir at Fanghourne (121). 

 — The architectural drawings of Mr. Sanniel Prout are. as usual, 

 all deserving of notice, particularly the Gothic ones: The Porch 

 of Ratisbonne Cathedral (9), and .SV. Etienne Bennmis (229), es- 

 pecially.— TAe High Altar Cathedral of Toledo, Spain (82), by .Mr. 

 Lake Price, is an admirable drawing, and one of the best we have 

 seen of his; the ornamentation is elaborately worked out. — Mr. 

 Glennie has a classic example — View of the Temple of Neptune at 

 Pcestum; the background is subdued in order to give more effect 

 to the building, which is carefully drawn. — Mr. Palmer strains too 

 much after effect in Sun and Shade (149), and Sheltering from the 

 Sturm (175): the contrasts ai-e violent. — Mr. Topham has an effec- 

 tive composition in Making N'ets (247): all his paintings have the 

 merit of originality. — Mr. Frederick Nash, in No. 62, interior of 

 Exeter Cathedral, is deserving of great praise. — Mr. 'Wright shows 

 a good composition in TheMouse,or the Disappointed Epicure6;{l7 i): 

 it has much expression. 



NEAy SOCIETY OF PAINTERS IN WATER COLOURS. 



This is the fifteenth Exhibition; the Drawings number 402. — 

 Mr. AV'arren, the President, has a large ])ainting — Joseph's Coat 

 brought to Jacob (27(i), illustrating the Scripture history, where 

 the brothers bring tlie blood-stained garments of Benjamin to their 

 father, who is weeping at the supposed loss of his son. There is 

 great feeling in tliis picture, and shows the power of the artist. — 

 Mr. Haghe, the Vice-President, exhibits two pictures — The Ve- 

 teran's Stnn/ (202) is the best. It is representing an old cavalier 

 listening to tlie deeds of prowess done at Edge-Hill; the counte- 

 nances and situations show Mr. Ilaghe's great skill and expressive 



touch. Mr. Vacher has a good arcliitectural subject — The Piazza 



of St. I'etcrs during the Benediction (221); the buildings are well 

 drawn in this. — l\Ir. Aaron Peuley has an effective picture in 

 Serenity (357); it is a scene on AVindermere Lake in the evening: 

 the picture well expresses the title. — Mr. Laporte sustains his 

 reputation in Cantaljs (324); the horse is well drawn, and is repre- 

 sented pawing the ground, anxious to start.— One of the best in 

 the Gallery is The Murderers of Thomas Chase, nf Amersham, draw- 

 ing up the Letter to the Clergy (iuo), by Mr. Edward Corbould, who 

 has attempted a great deiil, and has been well rewarded for his 



