320 Report on. the Eochihition and Trial of Implements 



Mr. W. C. Cambridge : 5-horse moveable. The workmanship of this 

 engine was inferior, and duty below the average. 



Mr. Alfred Sparke : 5-horse moveable. This engine, in its construction, 

 was simple ; parts well arranged ; workmanship fair ; and duty quite up xo 

 the average. 



Messrs. Garrett and Son : 6-horse moveable. One of the peculiar features 

 in this engine is the substitution of wrought iron for cast, wherever prac- 

 ticable ; the bearing of crank-shaft is wrought iron, very firmly seated on the 

 end of the boiler, the same plate being beaten out to form the end of the 

 smoke-box ; the water-heating tank, also, is well arranged, being composed 

 of an external and internal case, and the water between the two, with the 

 exhaust-steam from cylinder, passing through the inner case, where a certain 

 amount of condensation takes place, and the product in pure water, to the 

 amount of about 25 per cent., returned through the force-pump to the boiler, 

 which is of some considerable moment where the water used is subject to pro- 

 duce incrustation ; the foot valve force-pump was on a level with the supply- 

 tank, which is practically of great advantage. We would also notice a clever 

 application of a spring sunk within a groove in the axle of the carriage of this 

 engine, which effectually prevents concussion when passing along a rough 

 road. The duty done, in this case, was very creditable ; the quantity of coal 

 used and time occupied in getting up steam very little ; and, although the 

 consumption of fuel by this engine was a little more than some of its com- 

 petitors, we would account for this, in a measure, by the shape and smallness 

 of the fire-box, which these manufacturers have adopted for the purpose of 

 obtaining increased strength, combined with less weight. The workmanship 

 of this engine was very good, and we deemed it, as a whole, quite worthy to 

 be " highly commended.'''' 



The 5-horse engine, by the same makers, was not fitted to work so econo- 

 mically as regards fuel, but was, nevertheless, a plain, strong engine. 



Messrs. Tuxford and Sons : 4-horse moveable. The boiler of this engine is 

 composed of 2 flues opening into the fire-box, having return tubes into the 

 smoke-box at the fire end ; the cylinder works vertically, and is placed in a 

 MTOught-iron box at the end of the boiler; a very neat arrangement, and 

 useful as keeping dust from the working parts. This engine was creditably 

 turned out as regards workmanship ; did fair duty : we felt pleasure in com- 

 mending the same. 



No. 2, by the same maker, also 4-horse ; differing from the above in the 

 cylinder being on the oscillating principle, and the boiler a tubular one. 

 This engine was very compact, light, and portable, but consumption of fuel 

 above the average. 



Messrs. Hensman and Son : 5-horse moveable. A plain engine, of moderate 

 workmanship ; small heating surface in boiler, and consumption of fuel more 

 than any of its competitors, with one exception. 



Messrs. Holmes and Son : 6-horse moveable. An engine of good design and 

 fair workmanship ; commenced working satisfactorily ; but, in consequence of 

 the force-pump failing, the trial was stopped, and credit given for the coal 

 remaining unconsumed ; but for this accident the duty done would doubtless 

 have been more satisfactory. 



Mr. Eaton : 6-horse moveable. This engine had the cylinder placed in the 

 smoke-box, and the boiler containing a fair amount of heating surface, with a 

 workmanship creditable ; the result was so far satisfactory that we thought it 

 worthy, "considering also the lowness of price," of a commendation. 



Messrs. Barrett, Exall, and Andrews: 6-horse moveable. To this engine 

 was awarded the second prize ; and we were very glad to observe that the 

 firm had made considerable improvement in the arrangement and princi[)le of 

 their engine, in consequence of which the. economy in the consumption of 

 fuel was apparent, as will be observed on reference to the tabular statement. 



