54-1: Trials of Traction-Engines at Wolverliampton. 
Turford and Sons'' IQ-IIorse-xioicer Enyine. — The foiutli and last engine 
in Group 1 was Tuxford and Sons', No. 2677, 10-horsc-power, price, 390/. 
This is an engine of the locomotive tj'pe of boiler, with a single cylinder 
12 inches length of stroke and 9 inches diameter of bore, giving an area of 
81 circular inches, or only 8"1 inches per horse-power, instead of the 10 
inches of the Bury standard. The area of the fire-grate is 4'23 feet ; the 
heating surface of the fire-box, 21'41 feet; and of the tubes, 132-75 feet — 
together, 154"1G. The flue area, through the tubes, is 'G foot. The cj'linder, 
which is steam-jacketed, is placed upon the barrel of the boiler at the smoke- 
box end. The crank-shaft is over the fire-box, carried in plummer-blocks, 
fixed, to a saddle-casting bolted on to the top of the fire-box. It .should, 
be stated that, unlike the other engines of the locomotive type, this engine 
runs fire-box first, but as in all previous instances the terms right and left 
have been used when the spectator is supposed to stand at the fire-box 
end and to look towards the funnel, the same positions will be assumed 
in the case of this engine. At the left-hand end of the crank-shaft is a flj'- 
wheel driving-pulley, and at the right-hand end is a clutch, which can be 
slidden into gear (when the engine is required to travel) with a wheel having 
teeth to receive a pitch-chain. This chain drives a larger-toothed wheel loose 
on the right-hand end of the second-motion shaft, which is supported in i» 
wrought-iron framing — hereafter to be described — and extends across the 
engine under the barrel of the boiler, and on the fire-box side of the driving- 
wheels, which in the case of this engine are near the smoke-box. The chain- 
wheel on the second-motion shaft contains two bevel pinions for a jack-in-the- 
box motion ; it drives at its right-hand side a bevel-pinion loose on the 
second-motion shaft, and attached lo a spur-pinion which gears into a spur- 
wheel, keyed on the boss of the right-hand driving-wheel ; and on its left-hand 
side it gears with a bevel pinion keyed on the second-motion shaft, at the left- 
hand end of which is a spur pinion, to gear into a spur wheel keyed on the 
boss of the left-hand driving-wheel. From this it will be seen that the jack- 
in-the-box principle is applied, not directly to the driving-wheels themselves, 
as in the case of Aveling and Porter's engines, but to the second-motion shaft. 
The driving-wheels, as will have appeared from the foregoing, are loose upon 
the main axle : they are 5 feet in diameter and 1 foot 4 inches wide ; their 
rims are made of wrought iron, and on the rims bands of iron are riveted 
diagonally at intervals. The engine has a single slide, worked by a link motion. 
The feed-pump is worked off its own eccentric. The reversing-handle, steam- 
regulator, and the regulator for the amount of feed M'ater are brought within 
the control of the fireman. At what would ordinarily be the back of the fire- 
box, but which, having regard to the way in which this engine journeys, is 
in this case the front, there is an enclosed si)ace for the fireman, the steei's- 
man, and the fuel. The two fore-wheels are each carried on a short pin, 
projecting from the under end of a vertical plunger. This plunger works in 
guides upon the sides of the inclosure where the fireman stands. The upj er 
parts of the plungers enter cast-iron boxes, in which are volute springs. At 
the lower ends of the plungers there are lever arms, to which rods are attached, 
and are led away to levers placed upon the bottom end of the steering-spindle. 
This is vertical, is carried in a suitable casting, and is surmounted by a worm- 
wheel, driven by a worm-pinion on the steering-wheel spindle. Below the 
barrel of the boiler there are a pair of side frames ; these are hinged at one end 
to a bracket on the fire-box, and at the other, or smoke-box end, work between 
guides, and are provided with rods entering into boxes in which are placed 
india-rubber springs; thus both the driving and steering wheels are spring- 
mounted. The left-side driving-wheel is fitted with a break. The steering- 
wheels have a projecting rib to prevent the engine sliding in " side-long " ground. 
The water-tank is in the form of a smoke-box, and is placed where the smoke- 
