The sun., 1919-07-06
NEW WHEEL SPEEDS
TRUCK TIRE SHIFT
Enables Tyro to Change Heav.
lest Firestone Casing In
Five Minutes.

Tive had men tell me time after time
that they couldn't see pneumatic tires
for trucks" said e. P. Jones, Firestone
representative, yesterday. The arRu.
ment--and Il was q good one as far a.
II went--was that It was altogether too
dinicult task to make road changes,
And as a matter OF fact the larger
sized pneumatics, say 3sx7, 40xS ana
44xlo are % heavy that they have been
considered beyond the capacity OF one
man to handle when using the ordinary
type OF wheel, where It Is necessary to
detaoh the tire from the rim.
Then you have the additional expen-
diture OF time for Initiating the tire--ard
that 10 often a difficult Job in Itself.
Recently the Firestone Steel Products
Company, realising what this obstacle
meant to the working efficiency OF mo-
TOR trucks, developed an entirely new
idea in steel wheel design to acoomrno-
date Firestone demountable rims.
with this combination 1t Is possible
for one man to remove the largest tire
and apply an inflated spare In five min
utes-even less time than that. And IL
doesn't take an experienced man to turn
the trick either.
why, the other day At Macon. Ga.
six girls-members OF the Red Cross
Motor Corps-none Of whom had ever
laid a finger on q truck tire before
participated In q tire changing contest
staged by the manager of our Ship by
Truck feet. You should have seen
them manipulate these big giant pneu-
matics 40xs. The winning team made
tho change in less than five minutes.
Believe me, everybody sat up and tool;
notice
Here's the idea: After lacking UP
your truck so that the weight IL off the
tire. YOU turn the wheel so that the slot
in the felloe will be at the bottom. After
removing the clamps and wedge ring.
pull the tire away from the wheel. No
lifting Is necessary.
Now 20 apply inflated spare tire
turn wheel so that slot In felloe will be
at the bottom. Roll the inflated tire
and rim to tho wheel. engaging the
valve stem in the felloe slot Then push
rim on wheel. turning the wheel slightly
which will lift the rim and tire from
the ground. Push rim back on wheel
and apply wedge ring and clamps. Again
ND lifting necessary. Slot in felloe IL
covered to prevent water and mud from
getting in around tho valve stem.
This 10 not only one OF the most i'm
portant developments in connection with
pneumatic tires for trucks, but matter
OF particular Importance. to the Ship by
Truck movement, and all truck opera
tors doing long distance hauling.
with pneumatic tires the average
running time Of trucks can be increased
twofoh-yes. threefold and speed, you
know, will be a very considerable factor
in both the popularity and the practical
utility OF the motor truck express"
According 10 Mr.. Jones the F1restone
Steel Products Company takes Just az
much pride in this new steel wheel de-
sign As in the case OF the famous de-
mountable rim. which, by the way, was
the first practical quick detachable de.
mountabls rim. notable contribution to
the working efficiency or the automobile
However. he said that the Ffrestone
Steel Products Company has no inten'
ton OF either manufacturing or selling
wheels, simply having developed this de-
sign to meet the needs OF the situation
It has passed information to all whee
ma nufacturers which will enable the
wheel maker to construct his standard
wheels so as to incorporate the Fire
stone idea. Six OF the biggest stee
wheel manufacturers in the country
| said Mr.. Jones, are using the design ant
| are ready to make deliveries now. A
dozen other firms have sgnined q SINH
lar intention.