The Washington herald., 1916-07-16

the bizsss. in the history Of the industry.
II tack, pin or other puncturable OBJ
ject cannot be discovered in the tire, ex-
treme care and some practice is neces-
sary to locate the puncture- Ordinarily
punctures can be repaired with FirestUne
'Puncture Seal" a thick. self-healing
material furnished in collapsible con-
sertion through puncture.
With the wheel turned so that the
puncture Is at the bottom and with the
tire Debated, work the pointed end Of
container through puncture and force
squeezing collapsible contajner. The
''Puncture Seal is forced out of two
small holes IN the sides OF point and It
Is therefore advisable to turn the COL
lapsible tube round and round so as to
spread the "Puncture Seal" thereby
forming a patch Remove tool slowly
and hang tire in a position to aAow
Some time Is required for the 'Puncture
SeaP' to set and become hrm-the tire
should not be used before an hour after
repaired IN this manner.
In the event tire has been punctured
through both tread and base. then treat
the base or nm side OF tire In the same
manner as explained.
Rubber Plugs Bad.
Because of the difficulty in making
tires alright, rubber plugs and rub
Der bands are not recommended for
the repair Of ordinary puncturss, ex-
cept as temporary treatment II
the puncture or cut be too large for
repair with "Puncture Seal" and 1t Is
not desired to make a sectional yul-
canized repair, then rubber plugs or
rubber bands with a combination of
'Puncture Seal'' for adhesiveness can
be used to advantage.
II the ferrule OF valve stem should
work loose or be damaged, It should
be removed carefully and the rubber
stem wrapped tightly with fine, flexi-
BILE, soft wire. II the work is done
carefully, the metal stem will be held
in position and the tire will not leak
However, should leaks develop around
top Of rubber stem, after wrapped with
wire, or II rubber valve stem has been
torn where fitted into wire, then in
sert a metal base valve in the follow
ing manner: Cut OF rubber valve
flush or even with surface Of tire, but
do not change the size of hole in tire.
Fasten threaded end of valve stem into
a wise or 1T 1t into hole in a block
OF wood
some rubber cement to base Of valve
stem, also around hole in tire. Then
pull tire over base of valve stem
Tightening Of lock washer completes
the operation.
Countersfnk Valves
Be sure to counter sink or ream out
valve hole in rim to accommodate lock
washer on metal base valve. Unless this
Is done, tire will not 1T close to rim at
this point and the tendency will be to
loosen.
Failure to locate puncture and with
the impression that the tire is porous a
quantity Of anti-leak solution. for ex-
ample, molasscs, glucose and other prep
arauons may be introduced through valve
stem with the object OF making the tire
air tight. This treatment is all right for
tire that is old, dried out and in which
the inner wall is in such condition that
repairs cannot otherwise be made, but a
solution should not be used in tire which
ii is desired to repair by vulcanization.
A solution may not be harmful to rub
Der. but il it soaks into the fabric sep
Eration will usually develop between the
layers and interfere with vulcanfzation.
It Is sometimes possible to wash solutions
from the inside Of tire but this requires
considerable care and because of the
doubt with regard to adhesion Of inside
patch and the effects Of heat during vul-
Canization. the success of the repair can
never De determined until after compile
ton
Tires should Be Inflated.
The tires should be inflated so that
they round out well under weight of
rider. II ridden soft, the tires are more
susceptible to bruises and rim cutting.
Excessive wear may be expected If the
foot be used on the front tire as a means
Of breaking momentum Of the bicycle.
Also avoid quick or severe use of reverse
Of coaster brake this will cause rear
wheel to lock and grind of tread rubber
OF tire. II wheels are removed from
frame Of bicycle, care should be exercised
IN placing them in the frame again.
The cone adjustments should be Just
right and the wheels should be in balance
I and turn true
Contrary to the general impression, the
cracked condition OF rubber known as
gun checking is not necessarily a re-
suit Of age, but is largely influenced by
the conditions under which tires are held
in stock-also exposure to light and sun
after put into service Tires should not