Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1916-10-15
|s|MPL|F|ED LESSONS ON
PROPER CARE OF AUTOS
Orator Coil of Ignition System 81
Some Higll-I'riced Cars
Is Explained.
TWO SYSTEMS MADE PLAIN
Professor Guerrlich Tells of Work.
ings OF Vibrator Coil, Vibrator,
Timer and Many Vex-
ing Troubles Explained.
4. 1916. by Frederick G. Guarriich.
LESSON No, n.
The Vibrator Col

INC SOiI.
IN this lesson We will study the coil
used in the ignition system on the Ford
cars. ana also, in combination with Il
magnetic. on some OF the best and high
est priced cars. THIS coil is known an
a vibrator COLL =
AS in the distributor system. this
system must have in the primary cir.
cult source Of current. II Switch for
stopping the how of the currenI when,
the engine iS TO be stopped. Il coil. u
device for interyup,ing the current
when the spark is TO come,~aIul Il; de-
vice for timing the interruptions So
that the spark will come in the cylin-
der when the piston is In the proper
position. ,g
The great difference between tht.Si--
orator coil ana the distributor system
is in the way The interrupter operates
In the latter system this is done me-
chanically, while, in the former. II IS
done magnctically. ,..
The vibrntor.
Let US study this magnetic inter.
ruptcr. We saw. when we studied tho
coil. how when u soft iron core has "a
coil of insulated wire wrapped about
IT, and "a current of electricity is al
lowed to flow through this coil. lit he
comes magnet and viii draw :, piece
OF steel TO IT. If we had ~ device as
shown In Figure Gn which is Il
piece Of steel fastened TO the spring
:. the other end OF which spring 'ts
held stationary. and closed the switch
current Of electricity would now
through wire q from the battery. then
through the switch, then the Wire e
and spring H. then through the coil
and back to the battery through the
Wire s. As this current flows the
core VIII become a magnet and the
steel will be drawn toward It. thus
bending the spring z. If we open tho
switch tn" core wi!l he demaEnctizcd
and tn" steel will spring back TO It's
original position.
Instead of connecting the wire u di-
rcctlE To the spring as above. let us
make an indirect connection or one as
shown In Figure 2: Here the wire r
is connected 10 tho brass arm W. SO
that the current Will now Gow through
'his arm then tho screw o. then the
point j.. Then point =. and along the
Let us what w;ll now happen
when We close the, switch. AS the
current Hows the core viii become n
magnet and thus draw down the steel
block. making It take the position
shown IN Figure . You Will notice
that the points J.. and q are. uow scp.
arated This means that the flow OF
the current has been Interrupted. 50
that the core Will become dcmag.
netized. What vii! nov happen 10 tho
steel? Why, II VIII spring up. and tho
points y and g will again come 70.
Eethc:. thus again the curren, Will
now and core be n magnet. thus again
separating inc points J. and -. thus
stopping tho flow o! the current and
so dcinaRnetizing tho core. when tho
steel viii again spring up aud bring
the points together again Thus you
VIII notice that the steel IL constantly
being drawn down ard sprinEing I'D. or
vibrating. Each time the steel Is drawn
down the current .S-t1VurrupvEr.- TIM
you Will note thAt-LhiS- il -4iulll,-. u.aIx--
geueaRy. ThnSSSst'h a $, III fhistie;
In terrupter.
. k..,. ,.itA
ig your home. study your electric
doorbeN or buzZer. You will notice
that ii operates exactly as described
above, there simply being AN arm on
the vibrating spring with clapper
% one end which strikes the bell
y What has this to do with the giving
a. the spark We ltaow that IL We have
4icore with Wffe cosled about IL,
chat every time the core AZ maEnetized
Dr., demacnetized in some way~there
Will be shot of current.through the
wire. The above Shows asl~ay 70 mag
netize or dema gnetizc the core soaihat
X We were TO wind around tho vibra.
tor coil explained above another coli
having about 1000 more turns OF wire
than there are in the vibrator coil
There would he a shot OF very, high
voltage current every time tho points
Pfand Q are separated. and thus we
would get spark AT the spark plug
E,Sou Will notice tina, just so long as
Ipe Swltcn is cIOSed ehe vibrator VIII
Nitrate. SO that there will constantly
be sparks at the plugs OF great fire.
quency. This VIII not do, as we want
the spark only when the piston is up
and ready TO start down on its power
stroke What shall VIC do? Why put
In the primary circuit some device
Which Will time the vibratioJts to come
nn1y when we want the spark.
rs: The Timer.
AEIn Fig. such a device is shown
Hhis. you will note Is simply IL revolv-
Ing switch The drum II is made Of
An insulating material inserted in
which is the metal segment *, hav-
ing binding post for connecting II
wire TO II. If now. instead OF run
ming the wire d direct from the coil
t0 the battery, II be first fastened to
this segment, and wire he run from
tie rotor TO the battery. as shown by
the dotted line, no current can flow
Through the coil. except when the ro-
tor (Which is made TO revolve by the
sngine). is In contact with the seq
n1ent Thus there will he series of
sparks only when the rotor and tho
Regiment are in contact.
by fastening the rotor on It's shaft
In such a position that 1t will come
I'M contact with the segment at the
I4iiomcnt the piston of the engine has