64 ROBERT STEPHENSON, M. P. [ 1853 



The Sanspareil had a cylindrical boiler 4 feet 2 inches diame- "The Sanspareil ran a distance of 27.5 mile* average speed 



ter, and 6 feet long. The grate and chimney were situated at one 14 miles; greatest speed, 22.0 miles; Consumption of Coke per 



end ot the boiler, and connected by a single flue tube, with one ton per mile of total load, 2.41 lbs., and per foot of water evapo- 



bend, 24 inches in diameter at the grate, and 15 inches at the rated, 28.8 lbs.; evaporation, 24. feet of water per hour." 

 chimney. The grate was five feet long by two feet broad, and 



was overhung by the boiler by the addition of semicircular water "The Novelty, by a series of unfortunate accidents, failed 



chambers. The steam was thrown into the chimney to stimulate twice in the midst of experiments. The engine with its load, 



the draft by means of the blast-pipe as already applied to the traversed the Stage at 15 miles per hour. * * * 



Royal George. The violence of the draft so produced became * a * i " t 4 • i n 



very evident during the experiment* The two cylinders 7 inches n lt At / su ^ e( i uwi taaI on the , experimental stage, after 



by 18 inches stroke, were placed vertically over one pair of SOm<3 ^f!™ 8 ' he engine conveyed a total average load its 



/heels, and the four wheels were 4^ feet diameter, coupled The °™ ™ *J * '"1 d ' f 'ff , ^ f ^ "*"% ***? ° U ^ 



grate surface was 10 feet; fire-box surface 15.7 feet, and tube sur- Sf , f ^ L ° Ui ' , th , e fo^e consumed per hour, was 



face 74 6 feet. ' durm g. 6 i hours, the bellows being at work during the 



whole of that time. The consumption was therefore, equivalent 



The Novelty was peculiarly constructed. The fire-box was to 0.36 lbs., per ton per mile." 

 like that of the Rocket, placed at one end, inveloped in the water 



of the boiler; it was 18 inches diameter, close at the bottom, and Tllese trirl ' s established the advantages of an extended flue 

 fed through an air tight hopper. The flue was a single tube 4 surface > which the arrangement adopted by Mr. Stephenson, had 

 inches diameter at the fire-box, 3 inches at the chimney, and 36 brou g at mt0 useful operation; he now set himself to make further 

 feet long, traversing the boiler three times. The fire was urged lm P''ovements, and these he embodied in two other engines con- 

 by bellows situated near the "himney. The engine had but one structed ° n the same principle as the Rocket. 



cylinder, 6 inches by 12 inches stroke; placed vertically, and dri- - 



ving one pair of wheels, 4^ feet in diameter, by means of bell 



cranks. The steam was exhausted directly into the atmosphere. S ^?M D , REP P.? T - , f th f Special Committee of the Lit >rarr 



n , e -. „ j, . o , „ „ £ „ , . ., ,.^ „, and Historical Siocic ty oi Qutbec, appointed to K, pu. t upon 



Urate surface 1.8 teet; hre box surface 9.5 feet; tube surface 9o Mr. l-'oucault's Pendulum jjxpeiimeni. 



feet. 



Your Committee, having undertaken to make this experiment 



The respective weights of these Engines and their loads in with all the care possible, have much pleasure in submitting the 



working order, were as follows :— following report on the results obtained by them :— 



TONS. CWT. QRS. LBS. 



Rocket Engine weight 4 5 -A- carefully turned spherical ball of lead 5.2 inches in 



ton's, cwt. qrs. lbs. diameter, and weighing 17 lbs., was procured for the weight, and 



Tender . 3 4 2 suspended in the passage of the "Quebec Music Hall," where a 



Two loaded Carriages. 9 10 3 26 height of 60 feet was obtained. This weight was suspended by 



Drawn weight 12 15 a fine steel wire 0.15 inches in diameter, on one end of this wire 



, a fine screw was turned, by means of which the wire was fastened 



Total weight of Train 17 to the plate from which the pendulum was suspended. 



The method of suspending the pendulum was similar to that 



cj m? • ■ i , T0NS !' C Y T " QRS " LBS ' adopted by your Committee in their former experiment. A 



Sanspareil Engine weight 4 15 2 iii-ii-u.fi, ' i • * i • v. 



1 ° ° ---- ^^ small spherical ballot brass was ground into a hemisphere in a 



m , ' o' n ' plate of the same metal ; a hole was drilled through the centre 



mi i i" j"A" " ■ ■, n ■. n „ of the hemisphere for the wire, and sufficiently large to allow the 



Three loaded Carriages.. 10 19 3 , , . L •, t • + i ' ■ , vu ? ■ • * 



T-. . , , 6 , , „ pendulum to vibrate in the required arc without coming into 



D.awn weight 14 6 2 •.. ,i i . *. - 1 j . . ., P „ « 



° contact with the plate; the wire was secured into the ball of 



Total weight of Train.. ....19 .2 sus P ension - 



This arrangement being completed, the weiffht was attached to 



TONS. CWT. QRS. LBS. ,11 . _•* f il _■ 1 X. Vf ■ 1 



■vr ■,, t? ■ -i, < - j>mi o i„„ the lower extremity ot the wire, so as to hang within one inch 



Novelty Engine, weight, exclusive, of Tank.. 3 1 f ., fl J ° 



. TONS. CWT. QRS. LBS. 



Tank loaded 16 14 In order to start the pendulum for the experiments, a cotton 



Two loaded Carriages 6 17 thread was passed round the ball and tied over two pins on a 



Drawn weight 8 13 14 heavy moveable block. When the weight secured in this manner 



had been brought to a state of rest, the thread was fired with a 



Total weight of Train 10 14 14 taper, and the pendulum commenced vibrating, the thread falling 



to the ground. A circle 10 feet in diameter was described on 



The Drawn Weights attached to the Rocket and the Sanspa- the floor from a centre under the point of suspension, and 



reil, were the regulation loads — three times the weight of the graduated into degrees, by which the progress of the pendulum 



engines, — as the Novelty had no Tender, the same carrying was measured. 



weight was assigned to it in proportion the exclusive weight of Tlle first experiments gave a deviation from the calculated 



the engine that existed in the experiment with the Rocket. allgle of about lO40 ' an hour. This was subsequently accounted 



The Rocket was the only engine that accomplished the for and corrected, the wire being observed to touch the under 



distance of 70 miles. Its average speed was 13.8 miles per hour surface of the brass plate at the extremity of each vibration, 



the greatest volocity in anyone trip was 29 miles per hour. Your Committee consider this worth}- of remark, as showing how 



The consumption of Coke per mile per ton of total load of Train slight au irregularity at the point of suspension was sufficient to 



was 0.91 lbs., and per cubic foot of water evaporated 11.9 lbs., produce an error that would have vitiated the whole of the 



the evaporation, 18.24 cubic feet of water per hour." experiments. 



