( 349 ) 
Art. XV III .—Description of a new Patent Steam Coach , in- 
vented by Messrs Timothy Burstall and John Hill, En- 
gineers. (Communicated by the Patentees). 
This invention of a Locomotive or Steam Carriage, consists 
in the combination and employment of principles, some of which 
are new in their application to this purpose, and others well 
known and in general use. The leading features of the inven- 
tion may be comprehended under the following heads : 1st, 
The arrangement of machinery, and certain pieces of mecha- 
nism, adapted to effect the necessary evolutions of a locomotive 
carriage ; 2dly, The novel construction of a boiler or generator 
for the production of steam, and the peculiar kind of pipe or 
curved passage for conducting the steam to the engine ; and, 
Sdly , The mode of supplying thfe boiler with water, by means 
of pneumatic pressure, as exhibited in the plans and sections. 
Plate X. Pig. i. represents a side elevation of the coach, 
with the body, &c. Pig. 2. is a ground-plan. Fig. 3. a sec- 
tion, on an enlarged scale, of the boiler and machinery. Fig. 4. 
exhibits the top of the boiler, with the feed-pipe, and recep- 
tacles for water, as will be afterwards explained : the dotted 
lines in this figure show the fire-place and hues, the arrow be- 
ing in the direction of the flame to the chimney. Figs. 5, 6, 
7, 8, 9, 10. are plans and sections of several parts of the ma- 
chinery, with different modifications. Fig. 11. a plan of the 
ratchet-box, and part of the nave ; and, Fig. 12. a top view 
of a plate fixed on the spindle of the steering-wheel, to indicate 
to the conductor the angle of obliquity of the two axles. The 
same letters and figures refer to the same parts in all the plans. 
A, Represents the boiler, which is formed of a stout cast-iron 
or other suitable metal flue, inclosed in a wr ought-iron or copper 
case, as seen in section at Fig. 3. where A is the place for fuel, 
and a , a , a, are parts of the flue, as seen in section ; the top be- 
ing formed, as at Fig. 4. into a number of shallow trays or recep- 
tacles, for containing a small quantity of water in a state of be- 
ing converted into steam, which is admitted from the reservoir 
by the small pipe g , g ; while b , b , b , is the outer wrought me- 
tal case for containing the steam for the use of the engines. 
VOL. XIII. NO. 20. OCTOBER 1825. 
a a 
