The steam engine familiarly explained and illustrated; with an historical sketch of its invention and progressive improvement; its applications to navigation and railways; with plain maxims for railway speculators. By the Rev. Dionysius Lardner ... With additions and notes by James Renwick ...

LOCOMOTIVE ENGINES ON RAILWAYS 185
7 cwt. 2 qrs., exclusive of the unascertained weight of the
tender. The time of the journey was 1 h. 41 min. The
consumption of coke 1040 lbs. net weight, estimated as before. Rate of speed;Level - - - 17 miles per hour.
Fall of 4 feet in a mile 22
-6 - - - 22
Rise of 8 - - 15
On this occasion there was a high wind ahead on the quarter, and the connecting rod worked hot, owing to having
been keyed too tight. On arriving at Manchester, I caused
the cylinders to be opened, and found that the pistons were
so loose, that the steam blew through the cylinders with
great violence. By this cause, therefore, the machine was
robbed of a part of its power during the journey; and this
circumstance may explain the slight decrease in speed, and
increase in the consumption of fuel, with a lighter load in
this journey compared with that performed on the 5th of
May.
The Victory weighs 8 tons 2 cwt., of which 5 tons 4 cwt.
rest on the drawing wheels. The cylinders are 11 inches
diameter, and 16 inches stroke; and the diameter of the
drawing wheels is 5 feet.
III.
On the 29th of May, the engine called the "Samson,"
(weighing 10 tons 2 cwt., with 14-inch cylinders, and 16inch stroke; wheels 4 feet 6 inches diameter, both pairs
being worked by the engine; steam 50 lbs. pressure, 1.30
tubes) was attached to 50 wagons, laden with merchandise;
net weight about 150 tons; gross weight, including wagons,
tender, &c., 223 tons 6 cwt. The engine with this load travelled from Liverpool to Manchester (30 miles) in 2 h. and
40 min., exclusive of delays upon the road for watering, &c.,
being at the rate of nearly 12 miles an hour. The speed
Q2 24