In
the centuries gone by fire has been looked upon by some peoples as a
god, to be worshipped. Destructive conflagrations have been accepted as
the angry expression of a deity. But with the progress of civilization
the attitude toward fire has developed the philosophy that it is a
splendid servant but a dangerous master.
The history of portable fire fighting apparatus is an interesting
panorama of mechanical progress. It has been a long step mechanically,
as well as in terms of years, from the earthen buckets to the modern
pumping engine.
Ancient efforts at fire extinction were confined to the use of
earthen, metal or leather buckets for carrying water and throwing it on
the fire. The first mechanical device for fire extinction was a
syringe. In England in the sixteenth century it was known as a "hand
squirt." These "squirts" were of very limited effectiveness for their
capacity was only about two to four quarts of water, and usually three
men were required to operate them -- two to hold the cylinder and one
to work the plunger. Other people were of course needed to carry the
water.
Sometime about the middle of the sixteenth century a "fire engine"
was built, consisting of a giant syringe having a capacity of perhaps a
barrel of water, mounted on a two-wheeled carriage. The plunger, or
piston, was controlled by turning a crank attached to a threaded
plunger-rod. Water was poured from buckets into the syringe through a
funnel near its mouth.
Then came the "pump engine" - a plunger pump set in a large tub of
water. Two men operated the pump handle and another directed the jet of
water. In order to transport this "engine" it was mounted on a sled and
dragged by ropes to the fire.
This machine was more effective than the "hand squirts" because of
its greater capacity, but its effectiveness was impaired because of the
interrupted action of the jet. Water was projected in spurts, ceasing
with the completion of the piston stoke. As a consequence, considerable
water was wasted in falling between the engine and the fire. That
disadvantage was greatly overcome later by connecting two such pumps to
one discharge pipe, and operating the pumps alternately. But even this
machine had its limitation, and much reliance was still placed on
buckets and "hand squirts.
In the course of time there was developed the "man-power" pumping
engine with the rocking handle operated by two or more men, and mounted
on a four-wheeled carriage drawn by men. This type of engine, which was
improved upon from time to time, was used a great many years. A few
pieces of this type are still in existence.
The next mechanical device of importance for use in fire extinction
was the steam pumping engine, drawn by horses. Its advent marked
considerable progress in fire fighting equipment and though the first
of such engines was crude, yet the idea was developed to a point where
the "steamer" possessed a high degree of efficiency. For years it
served very capably in fire extinction.
The idea of using the gasoline engine to both transport fire
apparatus and to furnish power for the pump was approached from two
directions; one, from the use of the gasoline engine as a transporting
power only and the other from its being used only to drive the pump.
About 1908 a pumping engine consisting of a piston pump driven by a
four-cylinder gasoline engine was built. This was mounted on a vehicle
drawn by horses. This "pioneer" apparatus proved the practicability of
using the gasoline engine for furnishing power for a fire department
pump.
To adapt the gasoline engine to performing the double duty of
transporting the apparatus and of driving the pump was soon
accomplished. From that time, eventual motorization of fire departments
was a certainty. It was then a matter of improving upon the principle
whose inherent practicability had been demonstrated. Efforts at
increasing the efficiency of the early motorized pumping engines
included a study of the various types of pumps in order to ascertain
which one of the three types could best be adapted to use with the
gasoline engine. The three types were: the piston pump, the rotary gear
pump, and the centrifugal pump. The factors entering into the
suitability of these types of pumps for gasoline engine drive are
discussed elsewhere in this book.
It has been a long step mechanically, as well as in terms of years,
from the ancient bucket to the modern pumping engine. Who can say but
that this transition is an accurate indication of the increased
intelligence of the human family?
Author: From Seagrave Catalogue No. 5, ca. 1926