Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1917-03-11

suitahlc foi. an industries and can ..,u-
orally h., us,d in nl Industries ltcp
mud slinpcry road surfaces and dccp
sand naturally present conditions not
favorable H. "A tIailct. usp hut thry are
used in such conditions Ii is only
reason; bio to arkuuNlpdrr that Il g.
ton truck Will tralcl. faster thru dcep
sand when II is carving ITS own 5-tou
load than when II is CARVING AN ad-
ditiunal > TONS ON Il trui!rr. winch #
must haul along The same appIc,
To dccp mud and To SlippcrN hills. due.
To ice or other uuusual conditions.
tn, trailer can be used nm such cir
cumAtauces but speed is naturally cut
down great deal.
\ canvass of the field IN which
trailcfs are becoming quite general in
use give. Industries Of al kinds
Among them mirht hc noted whole
sale drag houses i'm Iairc cities. largo
department stores. milk distribution
people. cTcam,rl,s electric LIGHT and
power concerns. telephone orgauizt-
tons, contractors. plumbers. gas ,um-.
panies and farmers. To tins might
be added tourists. who are large users
of light truIlcrs for carryiur rlmu
equipment and bapparc.
There is nj present much drhlt. i'm
connection with the efficiency of
trailcrs Like every other question.
there are two sides to it, The trailer
manufacturer has been up To the min
ute I'm collecting cost figures un the
use of trailcrs i'm different fields of
work. ON the other hand. truck
users have been tXpcrimrnting as to
what are the most favorable fields for
trailer use 1.ailcr manufacturers
cite from actual use. showing how
traiiers have cut the cost ppr ton mile
from 6.6 ccuts to cents They show
how a siuptt truc, has been able to
handle Is tons per day over so
mile trip. as compared with trailer
handling 81 tons u,cr IS miles. 1t
can 0c seen that the trailer has re
duccd the speed approximately 10
per cent. but the load carried has
been nearly doubled
From the consumers viewpoint
VARYING results with the use of Trail
crs have been obtained. but all SHOW
IA pcrcentiblc increase in efficiency. \
recent example was that of "a con
tractor mailing the excavation for
large public building in the heart of
the city. where traffic was heavy. IT
was found In such case best to use a
5-ton truck with 5-ton trailer during
the day and to use the 5-ton truck
alone or without the trailer nt night.
Under this arrangement the efficiency
was the same during day hours as ut
niFht. During the day. traffic was
slow, congestion very great and the
truck could handle its own load, plus
that of the trailer. at the speed of
street traffic. At night. when the
streets were practically empty, the
truck could make its regulation speed,
and il was found advisable to operate
the truck as a unit alone. This ex-
auplc is Illuminating in that it points
to a great field of trailer usefulness,
namely, in congested sections where
truck cannot operate at its intended
speed.
one of the great advantages of the
trailer is the time saved in loading. \
large concern, operating severa,
trucks or tractors, can have number
of trailers, some of which are always
at the loading platform while the
trucks are at work. one large grocer
uses six trucks and nine trailers. by
this system he has cut his loading
time from two hours to five minutes
Individual trucks were failure, due
to loading delay but now trucks have
entirely replaced horse equipment be
cause of the trailer cutting down the
lost loading time. What this grocer
has done is being done in other in
dustries. The trailer is particularly
adaptable to all ines of work
Boon in Certain Instances.
There are some Industries in which
the trailer is particular boon to the
consumer, namely, where the goods
of relatively light weight and great
bulk have to be carried. On the other
hand, We find trailers equally eff
ficient in the transportation of road
material. etc 1t cannot be argued
that they are for any particular field
of work. but rather that they are for
all fields.
rrailers. according to design, are di-
ViGed into three divisions, as follows:
a-Icour- wheel trailcrs
b-Two-wheel trailcrs.
Semi-trailers
The two-whcel trailer has the load
balanced on its axle The semi
trailer also uses two wheels but the
load is not balanced over its axle.
rather the front end of the load rests
on the tractor vehicle. whether that
be a separate tractor or motor
truck This scmi-trailer type is that
design brought out by Knox, and is
now manufactured by many other
concerns
|. The four wheel trailer has a large
possible field of utility and can be
used in practically any service. IL
can be made in whcelbasc lengths to
meet conditions: in fact. IL is flexible
i'm al load-carrying respects. Four
wheel trailers are at present found