192 



THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 



[JVVB' 



Williiin Higgs, of Weslmintter, cberoist, for " the means of cpllectlng the contents of 

 Sewen and drains In cllies, towns, and vlllsgos, snd for treating chemically the same, and 

 •pplyloi! such contents when so treated to agricultural and other useful purposes. "— 

 April 28. 



Anthony Nathan de Itothscbild, of London, merchant, for ** ImprovemcDts in beating 

 apparatus and buildings." (Being a communication.)— April 28. 



William Mather, of Salford, near Manchester, and Colin Mather, of the same place, 

 miliivrlKhts and engineers, for " Improvements in metallic pistons."— April 28. 



Charles de Bergue, of Arthur-street weat, London, engineer, for " ImprovementJ in 

 atmospheric railways." — April 28. 



James Timmins Chance, Handsworth. StatTord, glass manufacturer, and Henry Badger, 

 of West Bromvkicb, glass stainer, for " Improyeraents in the maiiufutture of glass." — 

 .April 23. 



Joseph Douglas, of Newcastle-upon-Tyue, rope-roaJcer, for " Improrements in the 

 manufacture of yam, twine, and cordage." — April ao. ^ 



Joseph Toncbe, mechanist, of Rue St. Antoine, Paris, for " Improvements in lamps.' 

 — April .'<0. 



Edward Aupustiu King, of Wiirwick-street, Charing Cross, Middlesex, gentleman, for 

 ** Improvements in the production of magnetic electricity." (Being a communication.) — 

 April .'10. 



Thoinas Lambert, of New Cut. Blatkfriars, brass founder, and Charles William Rowley 

 Blcbards, of Charlotte-street, Blackfrlurs, engineer, for " Improvements in cocks for 

 drawing ofi" liquids an<l gases."— April IlO. 



John Mercer, of Oakensbaw, Clayton le Moors, Lancashire, chemist, for " Improve- 

 jnenta in scouring and clearing wool and woolen fabrics, also in bleaching and clearing 

 silk, cotton, and linen, and other fabrics." — Bfay 2. 



George Palliser, of Finsbury-place, for " Improrements in the construction of outside 

 seats of carriages." — Way 5. 



William Longshaw, of Manchester, for " certain Improvements in machinery or appa- 

 ratus for spinning and doubling cotton and other fibrous substances." — May ^k 



Peter Carmichael, manager for Baxter Brothers and Co., Dundee, for "Improvements 

 in hackling or dressing flax, hemp, and other fibrous substances, and improvements in 

 machinery for rubbin?, stretching, and equalizing the breadth of cloth made trom flax, 

 liemp, jute, and other fibrous substances." — May .3. 



George Riddett, of Ryde, Isle of Wight, upholsterer, for " Improvements in reading- 

 tables." — May 5. 



John Carter, of Fleur-de-lis-Street, London, ivory merchant, for ** Improvements in 

 paddle-wheels." — May .'). 



Alfred Vincent Newton, of Chancery-lane, mechanical draughtsman, for "certain Im- 

 provements in machinery for manufacti'.ring screws.*' (Being a communication.) — May 5, 



William Church, of Birmingham, for '*certain Improvements in machinery, to be used 

 In making candlestick pans, and various other articles which are usually produced wholly 

 or In part by means of the process called atamping ; and also in machinery for making 

 sockets or tubes for candlesticks and tubes, or tubular articles applicable to various other 

 purposes." — May .'i. 



\VillIam Pidding, of Wiemore-street, gentleman, for *'an Improvea process for pre- 

 serving the flavour of coffee and cocoa, or of any preparations thereof, from the effects of 

 the atmosphere." — May 5. 



Thomas Melling, of the firm of Melling and Co., Rainhill, Lancashire, engineers, for 

 "certain Improvements in (team engines, marine, stationary, and locomotive; and in 

 machinery and apparatus connected therewith, parts of which are also applicable to regu- 

 lating the flow of fluids generally." — May 7. 



Edward Shepard , of Trafalgar-square, gentleman, for " certain Improvements in gates, 

 doors, shutters, and other articles of the like construction, and in fastenings to be atiach- 

 cd thereto." — May T. 



Rfark Rolllnson, of Brierly-hill, near Dudley, engineer, for "certain Improvements in 

 steam-engines." — May 7. 



Alexander Angus Croll, of Suffolk-Street, Clerkenweli, chemist, for " Improvements in 

 gas meters." — May 12. 



Robert Wiliam Sievier, of Upper Holloway, gent., for *' Improvements in printing." — 

 3tlay l;i. 



WlUiim Little, of 198. Strand, publisher of the •' Illustrated London News," for " Im- 

 rovements in machinery for printing." — May 12. 



John Lloyd Bullock, of Conduit-street, Hanover-square, chemist, for "Improvements 

 the manufacture of quinine." A communication. — M.iy 12. 



Christopher Vane, of Frederick-street, London, gent., for " Improvements in apparatus 

 ployed when transmitting and drawing beer and ale." — May Kl. 



Charles Hancock, of Grosvcnor- place, gent., for " certain improvements in the manu- 

 facture of guttapercha, and its a))pticatioa aione, and in combination with other sub- 

 stances." — May l.'». 



Henry Valentine Bartlett, of Sheffield, dentist, for " Improvements in artificial palates^ 

 teeth, and gums, and certain machinery empljyed in the manufacture thereof." — May 15' 



Julius. Jeffreys, of Norfolk-crescent, Hyde-park, gent., for " Improvements in steam- 

 engine boilers and furnaces, and improvement? in propelling vessels."— May Ifi. 



William Rodger, of Shamfield-street, Chelsea, Lieutenant B. N., for " Improrements 

 in anchors." — May 18. 



George Duncan, engineer, E.1inburgh, for " an improved method of making comfits 

 confectionary, lozenges, and all description of pan-goods, the machinery and apparatus 

 for the man»ifacture uf the same, or for any olher article to which the said apparatus or 

 machinery may be made applicable." — May 10, 



Stephen Perry, of Woodland-place, St. John's-wood, gent., for " certain Improvements 

 in the manufacture of rings, straps, bands and bandapes, cords and string, and in their 

 application to clockwork, to locks and other fastenings, to presses, to books, to paper- 

 holders, to candle lamps, to window-sashes, to doors, to window-blinds, to seals and sur- 

 faces for lyint^ and reclbdng upon." — May 19. 



Alfred Markwick. of Longham-place, for " Improvements in the manuff cture of epi- 

 thems, used for medical and surgical purposes." A communication.— May 20. 



Zacbariah Major Parkes, of Peckham, surveyor, for "Improvements in the manufacture 

 of coffins for the dead."— May 22. 



Charles Thomas Luti\yche, of Birmingham, gold and silver chain maker, for " Improve- 

 ments in the manufacture cf porcelain buttons." — May 22. 



Hugh Greaves, of Hulme. Manchester, engineer, for " Improvements in the construc- 

 tion of railways and the carriages to be used thereon." — May 22. 



Charles Wright, of Southampton row, Kusaellsquare, boot-maker, for "certain Im- 

 provements in the manufacture of boots and shoes."— May 22. 



John Walker Wilkins, of .Stanhope-street, Hampatead.road, for "certain Improve- 

 ments In water-closets." — May 26. 



Charles Bertram, of Gateshead, Durham, Esq., for " certain Improvements in lie 

 manufacture oi artiliclal ftael, and in the application of the residual products to useful 

 purposes." — May 2G. 



..nTi'^nl'''' JL*''"''''';' "' '"''" Bromwlch. Ironfoonder, for " Improvement in glsilng and 

 «oameUmg the surfaces of cast Iron,"— Man 28. o o 



James Montgomery, of Sallsbory-street, for " certain Im proremests in the eonstrvctioa 

 of stedin-builers and steam engines, and In steam-ressels, and In the machinery for erv- 

 pellingtbe same."— May 26. 



Edward Alfred Cowper.o f Sraethwick, near Birmingham, engineer, for *' Imprgvfr- 

 mentB in themaoufac'ureof railway chairs." — May 26. 



WiUia-T Mayo, of Silver.atreet, London, manufacturer of mineral waters, foe " la. 

 provemeots in the manufacture of aerated 1 iquidj, and in bottling aerated and c 

 liquids." — May 2(i. 



" Blasco Gakay" Steam Ship. — The engines of this new vessel are 

 remarkable for being by far the largest yet constructed on (he oscillatiDg 

 principle. They are 350 horses' power; the engineers are Messrs. Mil- 

 ler and Itavenhill. An experimental excursion was made on the 14lh of 

 I\Iay, and proved perfectly satisfactory. The regularity and smoothness 

 with which the enormous cylinders oscillated on their trunnions was really 

 surprising. The principal peculiarity of construction to be noted is (hat 

 the valves and ports are placed over the inner trunnions, and oscillate ia 

 the same direction as the cylinders : the advantage of this method is that 

 the necessity of having large balance weights is avoided. The equability 

 of the motion of every part of the engine is a most gratifying proof of the 

 extraordinary perfection to \vhicb English workmanship has attained. 

 Messrs. W'igram aod Son are the Builders. She is intended for the Spaoialk 

 Government. 

 The following are the principal dimensions :— 



Length between the peupendiculars. . . . 187 



over all 209 



ft. tn 

 Breadth between the paddle-boxes .... 31 II 



Depth of hold 'M 



Mean depth with machinery on board ... 10 6 



Diameter of cylinders 68 



Length of stroke 6 



Messrs. Miller and Co. have undertaken to construct for the Oriental 

 Steam Company three pairs of oscillating engines, on the same plan, but 

 of still larger dimensions. The cylinders are to be of 76 inches diameter, 

 and the length of stroke 7 feet. 



CORRESPONDENTS, 



" A Working Mechanic" (Newcastle on Tyne). — We are not certaia 

 that we correctly understand the construction of the proposed mercurial 

 air-pump. Without the mercury be allowed to run out at the bottooi o{ 

 the conical tube, the mere turning of a screw will not make it descend. 

 In any case, the mercury in the conical tube will descend no lower than 

 the point where the difference of the heights in the conical and the upright 

 tubes balances the difference between the pressure of air in the receivec 

 and the external air. 



" Messrs. Blair and Phillips" have sent us a very pleasing design for a 

 railway bridge. It is not our custom to publish designs for structures not 

 actually erected or about to be erected, but the inspection of the drawing 

 which we have had the pleasure of receiving reflects credit on the taste of 

 the designers, and induces us to think that we should agree better vtith 

 them on architectural than on mechanical subjects. 



"J. Huntingdon" (Wanstead, Essex). — When an engine is travelliag 

 with uniform velocity, the pressure on the piston depends not on the pres- 

 sure on the boiler, but on the load drawn. If the size of the train be sucll 

 as to produce a resistance of A lb. per inch to the piston, the pressure on 

 the piston must also be A lb. per inch. If it be more, the speed will bo 

 accellerated ; if less, diminished. If, therefore, as is always the case, 

 the boiler pressure exceed A lb., the steam must be dilated in passing to 

 the cylinder. The whole theory is correctly laid down in De Pambour. 

 The ratio 10 ; 16 must have been arrived at by a statical process: the 

 problem is a dynamical one. The only correct way of determining di» 

 rectly the relation of the force of the driving-wheel to that of the piston, 

 is by equating the impressed and effective forces by D'.41embert'3 princi- 

 ple. A much more simple method is however to compare the respective 

 distances traversed by the piston and a point in the circumference of the 

 driving-H heel in equal times. Tor instance, suppose the length of the 

 stroke 18 inches and the circumference of the driving wheel 17 feet: while 

 the piston makes a double stroke (3 feet), the engine, if there be no slip- 

 ping, travels a distance equal to the circumference, 17 feet. Consequently, 

 the ratio of the average force of the driving wheel to that of the piston is 

 (neglecting the friction and inertia of the crank) 17:3. If < be the leogtb 

 of the stroke, and D the diameter of the wheel, the relaiion of the force 

 of the piston to that of the wheel is wD ; 2i or D ; i-6i67. Mr. Hun- 

 tington makes it D : < ' 8, which is too large by more than one-fourth of 

 the real value. 



" Mr. K. H. Sharp."— Received with thanks and will appear nest 

 month. 



ERRATA. — In the paper on the Aust Passage Bridge, — 

 Page 122, column I, line 10 from bottom, d<-le the full stop. 



„ column 2, line 29 and 31 from bottom for (S -(- 1), read (i -{- 1^ 



„ colamn 2, line 3S from bottom for (height^s read (height) ' 



