Arizona republican., 1922-04-26


wheeling of the aggregate to the
paver. by lifting off the dump bodies
from the dump cars, and dumping
them direct into the paver. Mr.. III.
| I, Bowlby at that time used a paver
which in our opinion today would
be rather small. 1t required IL cubic
feet of aggregate per batch. AS the
dump cars used in those days had a
capacity Of So cubic feet, the con-
struction for this particular work
was slightly changed. and instead of
putting one V-shaped body of SO
cubic feet on the truck, the Koppel
Industrial Car and Equipment cons
pany designed a car each of which
had three V-shaped bodies of II
cubic feet and equipped with trun-
Mons for dumping. The paver man
ufacturer in turn applied a hoist
to the paver, which lifted the bodies
off and dumped the aggregate direct
into the paver.
This system of road construction,
which we call the Direct Charging
System, is now extensively used in
the states, but we must thank Fl. u.
Bowlby and the Pacific coast-the
West-for the idea.
This system was improved upon
and it was found that it would be
advisable to do away with the V
shaped bodies for handling the
patches, and two designs have been
adopted by the contractors: The
tip over batch box and the bottom
dump batch box.
In some cases these boxes are
made of lumber, in others of steel,
depending upon the location of the
job. Where lumber can be pur-
chased at a reasonable figure, it is
/ n afsae IA
tractor to have the manufacturer
furnish the iron parts only, so that
the contractor can build his own
batch boxes The batch boxes are
made in different sizes, depending
on the paver.
For instance, the 21E, the capacity
is 33 cubic feet, for the 2SE. the
capacity is As cubic feet, and for
the BE, the capacity is Sc cubic
feet.
/ would like to cite a job which
| believe may be of interest to you.
The Koss Construction company Of
Des Moines, Iowa, had road job
Is miles long, running west from
Clinton, Iowa. This job was closely
watched by the various contractors,
as well as the state highway de-
partment of Iowa, because the con-
| tractor was anxious to build the road
| in the shortest time possible. In
order to ascertain the advantages
and disadvantages of industrial
track and car equipment, the Koss
Construction company used track
and cars at one end of the job, and
motor trucks at the other, thus maxi
ing two rival camps. The distance
of the haul at both ends was about
the same, and the Iowa state high
way department compiled figures
showing that the hauling outfit ac-
complished a larger yardage than
the motor trucks These figures can
be obtained from the Iowa state
highway department. A chart was
kept for a period of two weeks at a
time, and although l do not have all
| the charts before me ] know that
during the first two weeks of Sep
| ternber, 1921, a period Of thirteen
working days, the paver fed by
motor trucks laid 4137 feet of road
whereas the paver working with the
| industrial outfit laid 6302 feet, OF
additional of 2165 feet, which is
really 500 more.
want to impress upon you the
fact that this job is not to be taken
as an example, for all road Jobs, as
| there is not question that on Ger
tain jobs motor trucks are more
adaptable, depending entirely upon
certain conditions of the job, such
as the amount of aggregate to be
handled, the grades, the length OF
| haul, etc.
Taking it all in all / believe that
! the Improvement in Industrial CaI
and Track equipment for road con-
struction during the last ten years
| has been remarkable, and this u
! due not only to the continued study
of the manufacturers, but also
through actual use and recon-
mendations by the highway Officials
and contractors. The quicker we
perfect the system of moving aggre-
| gate to the payer the more rapidly
we can build roads. We all know
that good roads are essential both
| from an industrial and commercial
point of view, and we should all get
| together and work for better roads
Rountree's Report
| In his tenth annual report. J. A,
Rountree spoke as follows:
]. A. Rountree's Report
The United States Good Roads as
sociation meets in its tenth annual
session today under the most aus
picious circumstances. During the
past 10 months this organization has
been most active in assisting states,
counties, and districts in promoting
bond issues and securing road legis-
lations and doing everything neces-