US2610238A

US2610238A - Electrical automobile safety device

Info

Publication number: US2610238A
Application number: US80997A
Authority: US
Inventors: Joksch Rudolf
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-03-11
Filing date: 1949-03-11
Publication date: 1952-09-09
Anticipated expiration: 1969-09-09

Description

ELECTRICAL AUTOMOBILE SAFETY DEVICE Filed March ll, 1949 29 l l msm/euren 1/||| fw v i v v .frank/N6 P1 as: l

2 3a 36 ,ql :0A/ucr IK axel/ren 42 1MP" 33 'lam/nou 42 8 6 cau Doon 525i/TCH n I IIJ/1 32 r /6l/I/0A/.fy/7g #L @Il I I g 12 r Mmmm .sv/mv V3 4 A L .sn/emr .rv/my 11 Y M .mnm 5 f4 z/m/ L s@ IN VEN TOR. YB A Jojfcsch/ to the ground I.

ner.

I6 the contact of which cooperates with a movable contact carried by a spring I?. An electromagnet I9 provided with a coil I8 cooperates with an armature 20 carried by the spring II in such a manner that the contacts of the contact carriers I6 and I'I are closed, if the coil I8 is not passed by a current, but opened, if the electromagnet I9 is energized and attracts the armature 20. A line ZI connects. one end of the coil I8 with the generator II," and the other end to the ground I.

The contact spring I'I is connected by a line; 22 through a door switch 23 with the groundLz o This switch 23 of conventional form is arranged'v at one of the doors of the vehicleand is openedby any desired, well known device- (notshown) if the door is properly closed, but closed, if the: door is being opened. To each of the doors, one' similar switch is associated and all ,these door switches are arranged in parallel. In the present example, besides the door switch 23 asecond door switchV 24V is shown, `but'it will ,be seen that anyIdesired-fnumber ofmsuch -switchesinay be providedacc'ording' Vto thenu'mber of. doors.

The 'upper terminal of the horn I4 "is conswitch 26 to the ground IL v"This commonly used switch serves tooperate the :horn I4 intentionally in a' wellfknown manner; From the point [2l of the'line I5,'thereA extends'a line 28 through a hand-operated switch 29 to the point 30 of` the line 22 so 'that the switch 29 is arranged in vparallel with the electromagnetic switch I6 to 20. Moreover, fromthe line 22 leads aline 3| vthrough the pair of contacts 8 to the ground I.g

From the distributing pointv I2 leads` the pri- `mary ignition circuit v3i. to the primary winding 33 'of theinductive or ignition coil and further through the contact breaker lever 35 actuated-by the rotating ycam 34, and the breaker contacts 36 A condenser 31 isarranged in parallel with these'contacts in a Well-known lman- The secondary winding 38 ofA the ignition coil is connected through a line 39 to the distributor 40 which supplies the' spark plugs 4I withA current. From the line 32 leads a line 42 to an additional winding 43 of the ignition coil,which i winding extends oppositelyto the primary'winding 33, and further through the contacts 84 to the ground I.

Contacts 44 controlled by thestarter switch'l 4 are connected through a linev 45 to the distributing point I2. Parallel with Vthese contacts 44, thereis arranged a switch 41 by means of a line 46, which switch' is held in its open position by a by depressing the clutch" such as screen-heater, screen-wiper, indicator orthe like.

The systemloperates as follows: With the engine standing still, the -alarm circuit extends from the distributing 'point I2 through line I3,` horn I4, line I5, contact carrier I6, contact springVHA VI1 and further through line 22, door switch 23 (or 24) to the ground I. If the ignition switch 6 is. closed and the .contacts 1 thus l-interconnected, the distributing point I2 is supplied with one of the door switches 23', 24 horn I4is operated.

closed the When the 'ignition switch 6 is vopen-that is current from the battery 2. If, -moreoven'one of the doors of the vehicle is open and 'therefore @i-Wiege vf; en. igmconicelr anaal-1.1. f

5 wire, when, moreover, one of the doors is open,

the horn I4 is actuated since the distributing point I2 is supplied with current and therefore the said alarm circuit completed. The same effeet is -obtainedi when, with fthefengina standing lo'l'fstill, the Adriveropens a, door to leave the vehicle, and has forgotten to switch off the ignition ilswitch 6.

Whenthe lengine has been started, but the generator IIhas not yet reached a sufficient .1 5 number of revolutions to cause the electromagnet i lI3 to attract-the armature 20, the horn I4` does not sound,` if all doors are properly closed. If, however, one of the doors is open and therefore one of4 the

door switches

23, 24 etc. closed, the alarm circuit is completed thereby so that the .horn I4 indicates to "the driver that the door for doors areopen.v 1 It'is,jm0reover, desirable to indicatel to the driver vduring theV drive, whether yall doors y. are

a y, A .25closed` For this purpose,y therdriver'teinporarily nected byV ai linei "thro'ugh Va hand-'operated vcloses the4 control switch29 whereby-the broken contacts of the electromagne't I5 are bridged over and the horn` indicates to the driver that oneor .more of ythe doors lare not properly closed,fwith 30, out the necessity for the driver to turn back during thedrive. l A Y If the ignition switch 6 is switched off and vtherefore the'contacts interconnected, but the ignition circuit 32 has been directly connected to lthe battery 2 by an unauthorized person and the fatte'mpt is made to start the engine by operating ithe'starter switch 4, the horn I 4 sounds also with the doors closed, since in such a Icase the contact spring I1 is connected through the line 3l and the contacts '8 to' the ground I.` At, the lsame time, current flows through line 42, addi- "tional winding 43 and contacts to theground I so that the inductive eiect offthe vprimary winding A33 'is weakened andsparks are not ob- 45 tained at'the spark plugs 4I.. It will be seen, 'therefore,'that the engine cannot bestarted in fspite of repeated attempts. f j When the driver actuates the starter switch r4, but has forgotten to previously switch on the ignitingswitch 6, current flows from the'battery 2 through the starter switch 4, line 45', distribut- 'ing point I2, line I3, horn I4, 1ine'I5,'contacts 'of the-contact carriers AI6 and Il, lines 22 and 3l', contacts -8 to the ground I'so that the alarm signal'indicates to the driverthat the Yignition -switcht is open. Thesame eiect is obtained, whenan unauthorized person has connected the "ignition circuit 32 to th'e'battery'and tries to start the engine. Y

When an attempt is made to depress the clutch -pedal 48 with the engine'standing still, in order "to separate the engine from the gear set-'the :switch 41 is closed andthe distributing point I2 therefore supplied with current which flows 65 I from this point along the same path'as described `in the foregoing paragraph. Also in this case :the alarm signal sounds,irrespective'whetherV or -fnot the doors'are closed. "1 y f' `What'Iclaimis:V v- 'A l. An electrical: safety'- device` for motorvehif'cles vdriven by, an vinternal combustion engine, `which comprises- Vabattery, aV generator'driven -by said engine and 'connected tov said"v battery, a primary ignition circuitcomprising'a primary arranged in parallel with said ignition circuit and comprising an alarm device, an electromagnetic switch in said alarm circuit, electromagnetic means connected to said generator and opening said electromagnetic switch, if energized by said generator, at least one door switch in said alarm circuit, said door switch being opened, if a door of the vehicle is closed and vice versa, a hand-operated ignition switch comprising two pairs of contacts, one pair of which is arranged in said ignition circuit and is interconnected by said ignition switch in its closed position, whereas the other pair of contacts is arranged in said alarm circuit in parallel with said door switch and is interconnected by said ignition switch in its open position, and an additional winding of said ignition coil, connected to that part of said alarm circuit which is connected to the last named pair of contacts, said additional winding being arranged so that its inductive effect is opposite to that of the primary winding of said ignition coil.

2. An electrical safety device for motor vehicles driven by an internal combustion engine, which comprises a battery, a generator driven by said engine and connected to said battery, a primary ignition circuit, an alarm circuit arranged in parallel with said ignition circuit and comprising an alarm device, an electromagnetic switch in said alarm circuit, electromagnetic means connected to said generator and opening said electromagnetic switch, if energized by said generator, at least one door switch in said alarm circuit, said door switch being closed if the associated door is being opened so as to complete said alarm circuit with the engine standing still and therefore said electromagnetic switch being closed, and a hand-operated ignition switch comprising two pairs of contacts, one pair of which is arranged in said ignition circuit and is interconnected by said ignition switch in its closed position so as to complete said ignition circuit, as well as at the same time said alarm circuit, if said electromagnetic switch and said door switch are closed, whereas the other pair of contacts is arranged in said alarm circuit in parallel with said door switch and is interconnected by said ignition switch in its open position.

3. An electrical safety device for motor vehicles driven by an internal combustion engine as claimed in claim 2, wherein a starter switch is arranged in parallel with said ignition switch so that, if said ignition switch is opened and said starter switch closed, said alarm circuit is completed and said alarm device actuated.

4. An electrical safety device for motor vehicles driven by an internal combustion engine as claimed in claim 2, wherein a hand-operated control switch is connected to said alarm circuit and arranged in parallel with said electromagnetic switch so that, when said control switch and said door switch are closed, said alarm circuit is completed and said alarm device actuated.

RUDOLF J OKSCH,

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,116,324 Perkins Nov. 3, 1914. 1,257,259 Leslie Feb. 19, 1915 1,372,678 Eisner May 29, 1921 1,454,216 Eberly May 8, 1923 1,720,230 Murray July 9, 1929