Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1918-08-18
The Torauc Nrm or rnl..


tomobllc chassis ls thc touur 1m
or torque tube, the purpose a'.VmrI
is 20 keep the rear axle housing from
turning
When tho rear aNIe housing la h,Il
from turning. the revolving OF tho
propeller SHAFT and the dr.,.ne
pinion X FlE I. would make Oh,
gear II revoNe and s9 also tho rear
wheels H. however the axle houa.
Ing we're free s1 that It could ro.
Nulyc, then Instead Uf the gear and
wheel revolving say Iu the llrrc-
tion OF the arrow $50. the plui1u
X would roll around the gear ". and
thus both aNIr ana pIuIuu housings
would r"vulvr 100 the direction of tno
arrow No 2 the wheel rcmaiunc
stationary.
II the resistance ~ the wheel 90
turning be greater than that " the
housing then the housing VIII ro.
volvc. While II tbat of the housing
Dee greater the wheel will revoIyr
Vow there is a natural resistance Co
The wheel turning while practically
none Tor the housing Therefore n
Us necessary 90 add some device 60
hold the housing against revolving
Tire" methods are used 80 hold
ne housing from revolving namely.
the torquc arm the turquc tube. and
the lotchk.ss drive
Figure shows a torduc arm This.
you viii notice. ia a pressed steel arm.
fastened a. one end 90 tho rear axle
housing and az the other 90 cross
member of the frame As tho torquc
arm must not Interfere with the ac-
tion ~ the springs and aa 10 must
not tend 20 hold the axle out NJ line
or out ~ center .n amy way IL mus,
Doc 30 connected iu the housing and
90 the cross member NJ the frame us
90 swivel In practically all dlrcc-
lions
Thus the torque arm Is generally
fastened 10 the housing by means ~
a long bolt A, on which Il can swivel
or swing. If this were not done and
were the front end fastened either
too far 10 the right or left. one wheel
would be held forward and the other
hack. with the result that the car
would tend 20 travel IN a circle Due
% the swinging " the car body
there will always Doe "a swinging OF
the arm on the bolt A. and so. in
time the bolt or the hole through
which % passes will wear When
this happens there will be a pound-
ing noise under the car every time
e passes over an irrouhr.ty or II
started or stopped MANY cars arc
equipped with bushinVs CR), which
can be replaced when worn as above.
Tho fropt end NJ tho torGue arm
is usually fastened 90 tho cross mem
ber Of the frame. as shown You will
note that tho arm terminates I'm
ball tCl which fitH In sockets CD
BY having this ball and socHetS
twisting Of the arm, which would
otherwise result when one wheel 10
on an obstruction or in % hollow Is
prevented,
To allow slight movement Of the
arm the bumper springs tEl are fuI
nished. | might say here that these
springs cushion many severe blows
and that they often break when
broken. there will he a bad METALLIC
knocking Just under the front seaf
There wiz also be a bad knocking
when the bolt tFl, 10y which tho
bumper tube (G) Is fastened 10 the
cross member OF the frame is worn
AZ a rule this holt ig equipped with
a grease oup. the same os are the
bolts Of the springs As this grease
cup Is not socn. and l8 hnri t1 rot pi
II is much neglected Npr'oC'Iur o.
use Il will soon result in knocking
which will prove very d.Vrrroon'c.
Many Gays. ins.ead Of t0rGuc arm.
have a torque tube In this case q
lube. through which the propeller
shaft passes. In boltet 10 tho axle gr
The pinlon housing the other end he
Ing connected TO the crogg member
N tho frame Figure shows the
.orquo tube, Hero a. is The torgur
lube
You will note that the roar end nf
mo tube Is rigidly connected 10 'h"
1ousing, but that the front nn1 10
connected 10 the cross member of
ne frame nv n bail and socket s'
nat tho tube can swing Iu anF o.
'ectlOn,
In addition 20 taking rare ~ hold
nE the rear axle housing from ro-
'olNing. the torque tube also trans
nlts the drive or push M The rear
wheels 10 the body ~ tho car so that
ne springs are not required 90 10
.nythlng In addition 20 absorbing DO
DAD shocks While the tPruuD arm
.iso' transmits some 81 tho Ir.y" OF
ne wheels 20 the car. the springs
'hep they are used. are also required .
o take care Of most NJ this drive.
or late a number Of makes ~ care
re- buil' without either toruuo arm
r torque tube having what IV known
q the. Hotchkiss drive. Whe'f s0
uilt the springs must prevent che
'ar axle housing from revolving snf
aust transmit tho drive or push ~
he Wheels 20 frame of the car 400 1l.
lton 20 taking care Of tho road
hooks
In order 10 have the springs ar. .
omplish the above. they are under.
lung that rs, they hang beneath tho
aar axle housing, instead Of RESTING .
pon q. and are rlgidlv connected .
hereto the housing not being per. F,
lifted 20 revolve In the saddle of the 1
nrlno when tho spring IN no .
counted its forward portion win take .
are OF the iorme tho drive and ltr /.
hare Of the road shocka