Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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INTRODUCTION
Design #l shows a normal standard ignition set-up without my improvement.
Design #2 shows the same standard ignition system with my invention installed. Note
that the toggle switch is on the "off" position allowing normal car operation.
Design #3 shows my system on the "on" position which allows the car to run for 8-10
seconds .
The Auto-Anti-Theft device I invented is intended primarily to prevent auto theft by
means of time-delayed effect due to a time delayed circuit braker.
In order to be efficient an automobile theft device must not cause suspicion of its presence
nor must it be visible and it must force the would-be-thief to spend time to decode it.
My device has all these qualities:
1. It does not allow the car to be run for more than 8 - 10 seconds when so desired.
2. It can be installed wherever the car owner so desires.
3. It is hooked up in series between the coil and the distributor by two separate
electrical wires. A would-be-thief would have to use tools to reconnect it so
that normal car operation resumes. It is unlikely that a thief would have all
that time to spare.
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AB~T~ACT
Gasoline powered vehicles have two types of ignition system:
A. Standard: has points and condenser, puts out lower amperage than the
electronic ignition system.
B. Electronic Ignition: no points and condenser, it puts out more amperage than
the standard dystem, it is also transistorized. Unlike the standard system
most, of the system, the ignition coil is built on the distributor.
Both systems have two ignition circuits and an ignition coil.
C. Primary Circuit: one lead goes to the ignition switch, the other goes to the
distributor, both leads are connected to the ignition coil. The lead leaving
the distributor and connected to the coil is called negative (-) and puts out
more amperage than the positive lead that runs from the coil to the ignition
switch .
D. Secondary Circuit: is the other circuit, since it isn't relevant to my
improvement, I wi 11 not mention it .
E. Shndard l~nition Negative Side Output: 2 - 3 amps max. depending on
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on manuhcturer.
F. Electronic Ignition Output: 4 - 8 amps max. depending on manufacturer.
I have chosen the standard system for a design, since the function on both
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systems by the primary lead from the distributor is the same and operates on the same
principle. For detailed inshllation on the e!ectronic system, see pages 6,7,8, 9.
G My invention works on both systems 6 or 12 volts. My invention will not
affect normal car operation when so desired and it will stall any car within 5 - lO
seconds when desired.
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My system will help in reducing car theft.
l. It can be hidden.
2. It is cheap to install.
3. Unlike factory inshlled systems that are installed at the same place,
mine can be installed wherever the customer desires.
4. My system allows car to be shrted and through time delay stalls it
within 5 - l O seconds, causing no suspicion .
(lA) An automobilo thoft prevention devise for vehicles having an ignition
coil, an ignition switch and a distributor, the improvements consisting of a time
delayed switch, a toggle switch in series in the circuit between the primary terminals
of the ignition coil and the distributor, the toggle switch in one of its positions
eshblishing a direct circuit connection between the coil and the distributor. And
in another of its positions eshblishing a circuit connection between the coil and the
distributor via the circuitbreaker.
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(2A) The device, as in claim (lA), including a resistor in series circuit
between the toggle switch and the circuit breaker,
(3A) The device as in claim (lA), with toggle switch on the "off"
position. Will establish direct current flow from the distributor through the toggle
switch poles and finally end at the ignition coil, thereby establishing a direct current
flow without interference (normal car operation) (see Drawing #2). Drawing #l shows
normal standard ignition system without my device.
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(4A) Device mentioned in 1 A wil 1:
When toggle switch is positioned on the "on" position, will let the .
current flow from the distributor to toggle switch through the resistor and circuit
breaker and end up at the coil thereby completing the Auto-Gard Model 101 A.G.
circuit. In this position the circuit will be disconnected in 5 - 10 seconds by means
of time delay through the help of the 1 ohm resistor and the circuit breaker equipped
with a reset button. When normal car operatlon is desired the toggle switch is fltpped
to the "off" position, reset button pressed (see Drawing N3).
(5A) My system is cal l ed the "Auto-Gard, Model 101 A. G . "
The circuit breakers used won't be overloaded up to the max. 75% (stated by the
manufacturer and the C.S.A.) shortcircuit rating as per chart below, therefore
quality is a major factor.
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MATERIALS USED AND RATING IN "AUTO-GARD"
Toggle Switch
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Make: Carling Switch
Type: Single throw, single pole
Rating: 10 amps, 125 volts, A.C.
Circuit Breaker (time delay) / three types used
#1 and #2 can be used for standard ignitions and electronic ignition. #3 is
only to be used on electronic ignition due to its higher trip current rating.
It would not shut off a standard ignition system. See chart.
Chart of circuit breakers used in different models. Keep in mind that good
engineering practices dictate that you never load your circuit more than
75% of its total maximum rated short circuit rating; or, for toggle switches
their wattage and amperages. Compare to the highest possible electronic
ignition amperage output 4 - ô amps.
CIRCUIT BREAKERS
Hold Circuit Trip Current Max. Short Circuit
0.93 1.o3 15
1.00 1.75 15
1 .20 2. 10 35
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Resistor Type
Type and Rating: 1 ohm
Electrical Wiring
Type : Stranded 14 gauge (more flexible for auto useage)
Plastic Housing
Type : high density polythene
Dimensions : 2" x 2" x 1.5" deep
FUNCTIONS OF EACH ITEM IN "AUTO-GARD"
A. Circuit Breaker
Disconnects the circuit introduced to it. When excessive amperage is
introduced, the internal element heats up and disconnects the circuit,
therefore, it is a time delaying object. To reconnect the circuit press the
reset button (see Drawing #2 and #3).
B. Resistor
Acts as a reducer of amperage to the circuit breaker. It is a part of the time
delaying process in the Auto-Gard system. Less amperage to the circuit
breaker, the longer engine running time (see Drawing #2 and #3).
C. Toggle Switch
It directs the current to both circuits.
1. It leads the current directly through its pole from the distributor
to the ignition coil thereby establishing a direct current for normal
engine operation.
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2. When the anti-theft circuit is needed ('~on'~ position), it leads the
circuit through the resistor and circuit breaker to the coil, causing
an engine shut-off (5-10 seconds). See Drawings #2 and #3.
D. Plastic Container
Houses all the above mentioned items
AUTO-CARD STOPS THE CAR THIEF IN HIS TRACKS
Auto-Gard is a secret control box that stops auto theft not by means of ohen
useless, noisy alarm systems, but by immobilizing the car. All you do when you
Ieave your car is flip a hidden switch. If a car thief manages to start your car in
any way, Auto-Gard will shli the engine in or about 10 seconds. The thief cannot
res~rt the car. He must flee or be caught.
INSTALLATION INSTRUCTIONS
A. Mounting
1. Conceal Auto-Gard is any inconspicuous place: under the dash-
board, in the glove compartment, under the seat, etc.
2. Run the two wires from the unit through holes in the firewall into
the engine compartment. Wires must not interfere with any
moving parts or not surfaces. Pull wires to the coil and distributor
area .
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B. Connecting the Auto-Gard Wires to your Ignition Wires
There are two types of ignition systems:
1. Conventional Ignition: coil and distributor only.
2. Electronic ignition or transistorized ignition: using a coil
distributor and an electronic control box. The Auto-Gard is made
for both systems. Locate the type of system your car has and
p proceed as per instructions below.
CONVENTIONAL IGNITION
1. Locate the points wire, the 12 volt hot wire from the negative side
of the coil (-) to the base of the distributor.
2. Cut this hot wire at any convenient point and strip about ~" of
insulation from each end.
3. Connect each end of the cut wire to one of the Auto-Gard wires
using insulated connectors. When crimping wires make sure they
are firmly attached.
ELECTRONIC IGN!TION
Installation on cars with electronic ignition is essentially the same as
conventional ignition except that it may run between the coil and an electronic
control box before it goes to the distributor. To locate the correct wire, follow the
directions below .
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Cars Using Electronic Ignition
All General Motors built cars (1975 to present). On these cars the coil is
built into the distributor assembly. Locate the wire terminal box on top the
distributor cap. The wire to cut is the brown wire (coil wire) (-) which is located
directly below the small marking "c" on top the terminal box.
All American Motors built cars (1975 to present). The wire to cut is the
green wire that enters the coil at the terminal marked "negative. "
Mercedes Benz. First remove the rubber cover from the face of the coil with
a screw driver. The wire to cut is a black wire which is connected to the negative
side of the coil.
Datsun. The wire to cut is the white wire which connects to the positive
("+") side of the coil and runs to the "C" terminal of the balast resistor.
Volkswagen and SAAB. On these cars the points wire is the wire that connects
to the terminal iYl on the coil.
Fiat. The point wire to be cut is a single wire connected to the negative
(-) side of the coil. This wire is to be cut near the coil terminal before the wire
divides into two separate wires to feed two different sets of points.
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Volvo. On Volvos the wire to cut is the wire connected to terminal #15 on
the coil.
Mazda. Mazda has two separate sets of coils and two separate sets of points
in the distributor. Therefore, this car requires two separate Auto-Gard units: one
for each set. Point wires that connect to each coil.
Subaru. On the Subaru there are two yellow wires connected to the negative
(-) side of the coil. Both wires must be cut at the same point. The ends of the cut
wires should be stripped of the insulation and then twisted together as to form a
single wire. The joined ends should then be connected to Auto-Gard. I
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