1845.] 



THE CIVIL ENGINEER AND ARCHITECTS JOURNAL 



385 



discontinue the use of tlie cnninps, and to depend entirely for llic remainder 

 of the passage on the good qualities of his ship as a sailing vessel. Fh- 

 Tourahle weather soon gave us the opportunity of testing her ability in this 

 character, and from what we then experienced we have no hesitation in 

 saying that, in our opinion, her ahility as a sailing vessel \i not inferior to 

 any ship afloat. We overtook several vessels at sea sailing the same course, 

 all of which we passed. This fact we deem as the hest evidence of her 

 qualities as a sailing ship. 



" On the 10th instant we experiencfd a very heavy gale from the north- 

 west which continued for nearly 24 hours, and we then had an excellent 

 opportunity of judging of her strength and ability as a sea-boat. Par fnun 

 encouraging any of the ill-founded prejudices against the Great Hritain, 

 she on This occasion, strengthened our confidence, and won the adiniratiiin 

 of all on board. 



" Those of us wlio have experienced severe weather on the Atlantic can- 

 not refrain from expressing the opinion of the superiority of the (ire^t Bri- 

 tain in a heavy gale; and we venture to predict, that if she should ever 

 encounter worse weather than she has already, she will sustain her charac- 

 ter as one of the ablest triumphs of modern naval architecture. 



" In conclusion, we take pleasure in making public the statement that 

 we are well pleased with the Great Briuiin in every respect. For safely, 

 speed, and comfort, she is, in our opmion, unsurpassed ; and during this 

 passage of unexpected length, we have not sull'ered th« slightest diminu- 

 tion of comfort, and, in particular, our table has been as good and well sup- 

 plied as if we had been only the usual period. 



REGISTER OF NEW PATENTS. 



given abslrac's of the specificntiODS of all the most iin|H. 



jlleil. Any aiiditionnl information rwiuireil as to any \r. 



ay be obtsined by upulyiug to Mr. LAXTON at the OjHce of this JoailNALJ 



(Under this heail 

 patents as they 



BLASTING ROCKS. 



William Josph CoNRAti Marif, Baron de Lif.bhabkr, of Paris, for " hi- 

 proveients in blasting rocks amd other mineral substances for mininff ami other 

 jses, and in apparatus to be used in such worts— Granted March 27 i en- 

 Mile September 27, 1845. 



I'hisinve tion for improvetne t» in blasting rocks, &c. is similar to llie 

 mode hitherto practised, with the exception of boring or forming the holeio 

 contain the charge of powder, which, according to this inv^ntjon is ma ile 

 Jarger at the bottom or lower end, in place of having the same perfectly 

 cylindrical, as heretofore. The following is ths mode of eileeting the nticnc 

 object ; let rt (J represent a Iiule bore in the .'ordinary means nour in die, SAii 

 to the required depth ; then, in 

 order to enlarge the size of the 



ole at the lower end, which the 

 inventor edecls by dissolving cer- 

 tain porti.ns of the stone by means 

 of muriatic acid, diluteil with about 

 three times its weight in water. A 

 tube is to be inserted in the hole 

 and sealed round at the lower end 

 with S'jme suitable composilion, so 

 as to prevent the froth or vapours 

 from the acid passing between the 

 outside of the tube and inside of the 

 hole bored in the rocli. Within 

 his tube ih-'re is a smaller tuUi, 



through which the acid passes 

 into the hole. These tubes are 



bent at the top, and terminate in 



a vessel containing the acid, and 

 which ve.-.sel receives the froth that 

 passes from the hole through the 

 annular space formed by the two 

 tubes. The inner tube is bent at 

 the lower end, so as to prevent the 



froth pisi'm through tli- s tn ■.■;; This op? ration is continued until the 

 hole is sulTiciently Urge for the purpose intended ; after which, the content 

 of the hole arc remured by means of a syphon, or pump, and the same, wel 

 washed out and dried with low, or other absorbent material, when it will be 

 ready to receive the powder, which; is discharged in the ordinary manner. 

 It will be finind necessary in some cases to employ other acids than muri- 

 atic, according to the nature of the rock to be dissolved. 



MAKING TILES. 

 RiciiARn Wki.ler, of Capet, near Dorking, Berks., for " Improrements in 

 the wanufacture of drain and other tiles and fijjcj,— Granted March 27 ; Eq- 

 ' oiled September 27, 1815. 



This invention is suppo'ied to be for an improved machine for manufac* 

 *iiring bricks, tiles and pi|>es, which »e hare no doiht will be sulficiently 

 understood by the following descripiiim. The machine in question con« 

 sists of a frame mounted upon four wheels; this frame supports at each end 

 two semicircular cylinders, similar to a (Q) retort. Between the cylinders 

 there is a rod. having a piston at each end. made to fit the cylinders; this 

 rod is actuated by a lever and ratchet wheels, so as to force the piston 

 alternately into one or other of the cylinders, the motion of the lever being 

 similar to that of pumping or working a fire engine. I'hc cylinders arc 

 mounted upon an axis, or trunions, so as to be capable of being moved from 

 a horizontal to a Tcriical position. The object of this is that, during tlie 

 operation of forcing or expressing the clay from one cylinder, >vhich p.asses 

 through dies, and which cylinder is in a horizontal position. The other 

 cylinder may be placed in a vertical position, for the purpose of beinjj 

 re-filled wiih clay ; and in this manner the cylinders are alternately filletl 

 with clay, which is forced, in the manner described, though suitably formed 

 for the purpose i>f making bricks, tiles, or pipes. 



AT.MOSPIII^RIC RAILWAYS. 

 William Prosser, jun. of Pimlieo, and J.tcon BRrrrr, of Hanover-square, 

 for '• Improvements in railways, and propelling railway carriages^ — Granted 

 December 18, 18M; Enrolled June 18, 1815. 



We have giien two drawings of this invention, which, with the following 

 descriptiun, will be sufTicieni for must of our readers to judge of its ori- 

 gmalily. Figs. I and 2 show sections of the valves and portions of the 

 upper part of the tubes. The mode of propelling is the same as that pro- 

 posed by Mr. Pinktis, in the specification of his last patent, as will be here- 

 after described. In fig. 1, a a shows a jiortion of the tube, or propelhng 

 Fig. 1. 



main i ar two pieces of leather, or other flexible material, bolted on each 

 side of the opening in the pipe, which in this case, in plaoe of being one con- 

 tinuous slit, or opening, consists of a number of round or oljlong holes, with 

 narrow stripes of metal between them. The object of this is to make 

 stronger pipes with a less quantity of metal ; the two pieces of leather, l b, 

 are also secured at the upper edge to a projector attached to the pipe; c« 

 are flexible rods uf wood, which, by means of springs, d d, force the two 

 pieces of flexible material together: / is a bent piece of iron, extending the 

 whole length of the line of pipe. This piece of Iron, which is iiitcndeil to 

 support the under-side of the flexible material, is perforated with a number 

 of small holes, and is in appearance like a honey-comb. Fig. 2 sho^sano 



rig. 2. 



ther modification of fig. I ; the olijoct of the inventors in this case being to 

 prolyl two lines by one line of pipes, which is to be placed between the two 

 lines of rails. The mode of propelling is by a hollow arm, flattcnei at one 

 end, so as to pass freely b(>tween the flexible material, or lips, forming the 

 Talve. The other end of this lioUow arm is connected with the eduction 

 part of cylinders of an ordinary locomotive: thus, by exhausting the air 

 in the main or traction pipe, a piessure will be exerted on the pistons of the 

 locomotive, that will propel the same. The hollow arm is provided with a 

 small roller, that runs upon the bent plate/. 



The inventors propose to have a cylinder or reservoir attached to the loco- 

 motive, and connected with ihe cylinders of the same, the object of which is, 

 that when the train is descending inclines, the pistons of the engine will at 

 every etroke condensi; or force air into the reservoir, and thus act as a brea 



SI 



