US1719539A

US1719539A - Automobile lock

Info

Publication number: US1719539A
Authority: US
Publication date: 1929-07-02
Anticipated expiration: 1946-07-02

Description

July 2, 1929. K. FOUGHT ET AL 1.719.539

AUTOMOBILE LOCK Filed Nov. 29, 1926 Patented July 2, 1929.

UNITED STATES 1,719,539 PATENT oFF lcE'.

EMORY K. FOUGHT AND ESMOND G. WHITNEY, F TOLEDO, OHIO.

AUTOMOBILE LOCK.

Application filed November 29, 1926. Serial No. 151,363.

This invention relates to restricted con Fig. 2 is a wiring diagram'of the inven-v tion, the device being shown with parts broken away; and

F 3 is an additional wiring diagram. showing the apparatus having its unit differently connected to the engine from the showing in Fig. 2. 1

Motor vehicle 1 is shown as provided with nudti-cylinder internal combustion englne 2 normally connected to drive generator 3 in the ignition circuit which circuit is pro vided with distributor 1 and induction coil 5. The instrument boardfi is provided with ignition lock switch 7. Carried by the motor vehicle 1 is storage battery 8 having line 9 therefrom to ground 10 with the motor vehicle chassis.

From this battery 8 extends line 11 past starting switch 12 to starting motor 13. From the line 11 there is line 14- extending past circuit breaker 15 by line 16 to generator 3 normally having its shaft actuated by the operation of the engine. From this generator 3 extends line 18 to ground 10 in completing its circuit. This battery 8, or the generator3 during the operation of the engine for driving, serves as a current supply by way of line 19 past a current meter 20 to the ignition lock switch 7. Distributor 4: has branches 22 to the various spark plugs 23. A step-up transformer or induction coil 5 is in the circuit between the ignition switch 7 and the distributor 1.

In carrying outthe invention hereunder, this ignition circuit between the switch 7 and the distributor AL has placed therein a wiring assembly including the device of this invention. Housing 25 is preferably mounted on the dash or instrument board 6 and has extending therefrom conduit 26 of the wiring assembly. In this conduit 26 are conductor lines 27 28, 29. The lines 27 28, may extend to the ignition switch 7 and the coil 5 or to the coil 5 and the interrupter a.

The line 27 enters the housing 25 and extends to terminal 30 where it may be connected by a contact 31 with terminal This contact 31 is in housing or box 33 and is shown as operable by a lock having a key 3 1. The line 28 extends to terminal 32. The line 29 connected to the line 16 from the generator 3 extends to insulated terminal35 in the housing 25 and has therefrom line 36 to winding 37 with the circuit. therefrom completed by line 38 to ground 10. V With the contact 31 providingcommunication between the terminals 30 and32, the closing of the ignition switch 7will cut in the ignition circuit for normal operation for starting and running the engine 2. The line 29 from the generator 3 has current flowing therethrough to the winding 37. As the mo tor 2 is idling there is insufficient amperage to render the winding 37 effective through its core 38 for operatingarmature 39 against the resistance of spring 40. The spring 40 is connected to arm 41 of the armaturepivoted on fulcrum 11. This spring 40 normally holds the armature lever 39 closed at contacts 12, 43, at this switch in the circuit by-passing the switch at the contact 31. From the line 27 adjacent the terminal 30 extends line a l past manually operable toggle switch L5 to line 416 connected to spring carrying member 17 which serves to mount the fulcrum 11. This member 17 has insulation mounting 48. From the line 28 adjacent to the terminal 32 extends line d9 to the member carrying, contact 13. This member 50 is mounted on'insulation block 51 in the housing 25. I

ith the ignition switch 7 closed, the lock contact 31 in open switch position and the key 3% withdrawn, the motor 2 may have idling operation. However, should an unauthorized person attempt to drive away in the automobile, in so doing a load would be put on the motor by giving fuel so that, itwould pick up] This brings about a flux of increased current in the line 29 from the generator 3 which energizes the coil 37 sufficiently to open theswitch 12, 13. y This automatically opens theby-pass about the contact 31 for the

lines

27, 28, and thereby causes an interruption in the circuit to the coil 5 or tothe distributor 4;. This causes the motor to puff or seemingly misfire in a manner Fimitating engine action due to lack of fuel or ignition trouble. The engine at once drops in speed, thereby reducing the current in the line 29. The spring 4L1 recloses the by-pass switch 42, 43. The motor will thus have its circuit closed for continued idling. Building up generator ac tion occurs at accelerating of the motor. W'hen motor driving attempt is continued, the device of this inventionwill repeat the automatic strangling of the ignition circuit and will continue so to-do'as often as the motor is 'speeded up.

The installation of this safety unit is one which'may'be readilyaccomplished in the "usual type'of motor vehicles which-havea separate generator from the motor and which includea storage or secondary batt'ery. To this end from the side of the generator not to ground andbetween such side to"thisdevice through a coil to ground.

and the relay, there is connected a line It will thus be seen that there is no energizlng 'of'this coil from-the storage battery because 'it is isolated from the battery. by the relay.

TV hen the carmotor is started to operate the'generator, the initial starting'does not at once open therelay, so for such interval there is but slight current flow through the its armature before the relay acts. farm'ature shifting by the co1l'1so-ne which coil at'the device asdeveloped by the generat'or. iVhen thefspeed ofthe motor is sufficient to cut "in the relay, there is charging current.

In practice, it 'is desirable to have the coil in this device one which will be effective on This is connected to affect the ignition circuit and is located on either side of the ignition coil between "the ignition switch and the circuit breaker. AccordinglyWvhen the coil of the de'vice opens its switch, there is at once a breaking otthe ignition circuit causing the" motor to slow down and when such slowingdown' results in the decreased speed of the generator to such extent that the coil does not hold the switch open, there is effected a re-closing of this circuit from the ignition switch to cut in the ignition" for keeping the motor idling.

By the operation of the key to the device this ignition circuit line is out in independ- "ently of this switch of the coil so that the I vehicle may be operated normally.

' 1coritact 31 either by tumbler or key type of lThe contact 31 may be left in switch This action may lead the car thief or unauthorized one to believe' there is a lack of "fuel for the motor.

vention herein is an effective safeguard against driving of motor vehicles under their "own power. It is thus seen that the ignition "switch 7 "may be'left closedand the use of In this manner the inthe car restricted by theoperation of the closed"position and a minor subterfuge adopted for the car safety in the form of the manually operable switch 45- concealed by the instrument board 6.

The device of this disclosure is one which may be installed generally, even as an accessory, with its simplified wiring assembly and' may be interposed as suggested herein for its switch connection with the automatic control affecting such switch with such automatic control connection from the generator.

W Vh'at is claimed and it is desiredto secure by Letters Patent is:

l. A theft prevent-ion control for an intornal combustion engine having an ignition circuit, a generator actuable by the engine, a switch, a line from said'generator having means therein a ii'ected'by generatoroperation to .open said switch 'onlywh'en said generator is actuated bythe engine running at a higher than ldlmg speed, and manually shiftablc means for rendering said ignition circuit eiiective independently"of disturbance by generator operation.

2. An internal combustion motor, an ignition circuit therefor including a generator actu'able by the motor, a switch in said *circuit, a line from said generator isolated for receiving currentsupply only from thegenerator operation for operating-said switch only when said generator is actuated by the engine running at a l'iigher than idling speed, and manually shiftable means forspeed, and manually shiftable means for rendering said. ignition circuit effective independently of disturbance by generator op eration.

4. An internal combustion motor pelled vehicle having a generator, an ignition circuit supplied by said generator, a.

theft prevention control device for'the motor including a line to said generator having means therein operated by said generator for opening said lineuponpredetermined gen- "eation by the generator, manually shiftable means for rendering said ignition circuit eii'ective independently of disturbance by generator operation, and a Winding inthe circuitto which said line extends.

5. An internal combustion motor propelled vehicle having a=gen-er'ator,'- an ignition circuit supplied by said generator, a line to said generator, a winding irr=said circuit proto which said line extends, a theft prevention winding actuated switch, and a manually controlled switch for by-passing said winding.

6. An internal combustion motor propelled vehicle having a generator, an ignition circuit supplied by said generator, an ignition switch for cutting in said circuit, and a theft prevention control device for the motor including a line to said generator, means in said line operable by predetermined generation by the generator, a winding in said circuit to which said line extends, and in addition to said ignition switch amanually controllable lock for cutting in the device for rendering the device effective for restricting motor operation with the ignition switch closed.

7 An internal combustion motor, an ignition circuit therefor including a coil, an ignition switch, a generator actuable by the motor and providing a current supply for the circuit, a switch device in the circuit, a line isolated for receiving current supply only from said generator operation for operating said switch device at predetermined generation by the generator, and means for theft prevention providing a lock for the switch device for rendering the device effective for restricting motor operation with the ignition switch closed.

8. A motor vehicle having an ignition circuit, a generator for supplying said ignition circuit actuated by said motor, and a theft prevention auxiliary circuit embodying a switch for cutting in said auxiliary circuit permitting the ignition circuit to function during motor idling and rendering said ignition circuit ineffective upon higher speeds, and a manually controllable lock for rendering the auxiliary circuit not effective and modifying the ignition circuit. 7

9. An internal combustion engine propelled motor vehicle, an ignition circuit therefor including a generator operated by the vehicle engine, a winding, a switch for connecting the generator for supplying current to the winding, an electric controller for the switch effective at above engine idling speed operation of the generator for opening said switch, and a manually controllable lock for rendering the winding not effective and modifying the ignition circuit.

10. An internal combustion engine propelled motor vehicle, an ignition circuit therefor including a generator operated by the vehicle engine, a winding, a circuit for connecting the generator for supplying current to the winding, an electric controller for the circuit effective at, above engine idling speed operation of the generator, and a manually controllable lock for rendering the winding circuit not effective and modifying the ignition circuit.

11. A theft prevention unit including a lock, a coil switch to be cut in and out by said lock, conductor connections for the coil, a generator to which said connection extends for operating the switch, a motor, an ignition circuit therefor rendered ineffective by motor speeding up to cause the generator to operate the coil switch in thereby opening said ignition circuit, and additional c011- ductor connections from the unit to be controlled by said switch and lock.

12. A theft preventing unit including a lock, a first switch, a coil for the switch to be cut in and out by said lock, relay means, a generator, conductor connections from between the relay means and generator to the coil, an ignition switch, a circuit breaker, and means for placing said first switch be tween said ignition switch and said circuit breaker.

In witness whereof we affix our signatures.

EMORY K. FOUGHT. ESMOND G. W'HITNEY.