Moy
claims to have secured by this means a boiler of quick steaming
capacity, together with a reduction in the weight of metal, and
considerable economy of fuel. By the arrangement of the water in a
number of shallow layers a large steaming surface is obtained, and
there is a good steam space rendered available round the troughs. The
water also enters at a point where it may abstract as much heat as
possible from the furnace gases before they escape; and by the
separation of the top domed chamber from the rest of the boiler the
operation of scaling and cleaning is facilitated. The arrangement is
also adapted to horizontal and multitubular boilers, to be fired with
solid, liquid, or gaseous fuel.
[Illustration: IMPROVED BOILER.]
* * * * *
THE ELEVATED RAILWAYS OF NEW YORK.
But few persons who have not been in New York since the construction
of the elevated roads, and witnessed their equipments and operations,
can have any adequate idea of the extent of them, and of the people,
machinery, and appurtenances required in working them. A recent
inventory discloses the fact that there are 32 miles of roadway, 161
stations, 203 engines, and 612 cars, while 3,480 trains a day are run.
There are 3,274 men employed on these roads, 309 of whom are
engineers, 258 ticket agents, 231 conductors, 308 firemen, 395 guards
or brakemen, 347 gatemen, 4 road inspectors, 106 porters, 33
carpenters, 27 painters, 69 car inspectors, 140 car cleaners, 40 lamp
men, and 470 blacksmiths, boiler makers, and other mechanics employed
on the structure and in the shops.
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