US2022414A - Lock alarm - Google Patents

Description

. LOCK ALARM A l Filed Oct. 4, 1955 2 Sheets-Sheet 1 lNvEN-roR v www,

v /7/'5 ATTORNEY.

Nov.y 26, 1935.

G. FARVKAS LOCK ALARM Filed ociv 4, 1955 2 Sheets-Sheet 2` Patented Nov. 26, 1935 UNITED `STATES PATENT OFFICE LOCK ALARM Gedeon Farkas, Elizabeth, N. J.

Application October 4, 1933, Serial No. 692,120

' 10 claims. (o1. 116-33) This invention relates to a lock-alarm de-V vice comprising interrelated devices or mechanisms for providing a lock controlling the action of electro-dynamic parts and means for con- -trolling mechanically actuated alarm parts by or swinging panels or closures of different types or characters.

More particularly, my invention relates to mechanisms, intercontrolled through asingle mechanical element, extending operatively into both w mechanisms to cooperate with parts of the respective keys employed i. e. a key to control an ignition system and a key for setting a mechanical alarm system.

A further inventive feature is the provision of a pivoted bar, which has a small end conned in an arcuate groove of an ignition lock control barrel and an opposite longer end formed with a fork or yoke and an extending finger, said fork straddling an oscillatory shaft of an alarm escapement, said shaft having a web or feather, against the sides of which, the sides of the fork or yoke are alternately or intermittently moved to hold the escapement shaft against releasing a clock-train of gearing which is continuously under spring urge in the usual manner.

By employing an alarm or secondary key which contacts with the said finger beyond said fork, the pivoted bar or lever may be set at various positions, one position being a dead or still position when running the automobile or at other desired periods such as when in storage; in this position the pivoted bar is moved so that the small end thereof is rocked out of the arcuate groove entirely and free of the key barrel, but one side of the yoke is still in contact with the feather on the alarm escapement shaft. In this position of the bar, the alarm cannot be operated in any manner, except by using the secondary key to engage the said linger to throw it to the alarm-set position. A

The pivot pin of the said bar exerts sufficient friction to hold it where pu against the spring urge of the clock-train.

In the embodiment of the invention here shown in the drawings:

Fig. 1 is a front elevation, indicating, in dotted lines, the clock-train and its associated escapement and alarm hammer, together with the interoperative pivoted oscillatory `bar extendingl into the opposite mechanisms.

Fig. 2 is a back or rear View of the device as attached to an automobile, said device being turned vertically, or upside down; the parts being in the alarm set position with the small end of the bar extending across a portion of the ignition- 5 lock key slot.

Fig. 3 is a partial vertical section taken about on the line 3-3 of Fig. 5, looking backwardly, as the arrows point, with the ignition parts in the locked position and the alarm set against tampering with the ignition lock and with the alarm set key in the position it occupies prior to moving the rock bar to the dead position.

Fig. 4 is a fragmentary detail view showing the ignition lock-control key in the act of turn- 15 ing its barrel to cause a projecting pin thereon to engage a projection on the ignition lock bar for sliding the bar out of engagement with an ignition control part for unlocking said ignition, prior tostarting the automobile. 20

Fig. 5 is a top plan, or top edge View of the lock-alarm device, indicating in dotted lines, principal parts of the invention, to better disclose the interconnection of the rock bar or alarm control member. y 25 Figs. 6, 7, 8 and 9, are detail views of the several keys employed in connection with the invention.

Fig. 10 is a diagram showing the position of a lock bar when the alarm 1s free to sound. 30

A detailed description of the construction of the lock-alarm as shown in the present embodiment may be set forth as follows:-

n A base plate I, has attached thereto in any desired manner casings or housings 2 and 3, 35 Which project backwardly from the front face of said plate I, as best shown in Fig. 5, on the drawings. The casings are closed at the front as in Fig. 1 permanently and open at the back as shown in Fig. 2; the open ends being closed by suitable 40 cap plates 4 and 5. (See Fig. 5.)

Within the casing 2, is located a portion 6 of the ignition system of an automobile, and within the casing 3, is located a clock-train alarm system 'I o f any well known type, having an escape- 45 ment shaft 8, provided with an outstanding Wing or feather 9, said shaft being spring urged at all times in the usual manner. This shaft 8 also carries a hammer IU, for intermittent contact with a bell II,` when an alarm is initiated, as 50 itis well known in thisart.

Ar key barrel I2, preferably of the Yale type extends through the frontwall of the casing 2, and is revolubly mounted in its tumbler cage I3; the barrel is formed with an arcuate slot or recess I4 which crosses or intersects the key-slot I5, said key slot having the usual curved crosssection at most of its length (Figs. 3 and 4) but a wider straight opening portion at its outer end (Figs, 1 and 5) to permit the insertion of its matching key thereinto but still conceal the actual curvature thereof from ready inspection from the outside.

The key barrel I2, also carries a projecting pin It, located close to the rear edge of the tumbler cage I3, and when locking the ignition system, a key Il of the Yale type may be employed to turn the barrel I2 in one direction causing said'.

pin l5, to engage a lug or extension I8, on a slide bar I9, operating in a guide-groove 20, for mov'- ing said slide bar into locking position behind a shoulder 2! of the ignition parts to prevent the same from being turned into operative igniting position by a hand-lever 22, (Fig. 1) on an ignition `shaft 23; and by a reverse turning movement of the lock-barrel I2, the pin I6 will be carried around to engage the opposite side of the lug I8 to move the slide-bar I9, out of engagement with the shoulder 2lof the ignition system to release the same so that the automobile may be operated, all this also being well known in thev art.

At the front of the ignition casing 2, is another hand lever 24, for controlling the lights of the automobile through a shaft 25, but these parts form no part of this invention and will not be further described.

A key 28, (Fig. 9) is employed for winding a spring 2l (Fig. l) of the alarm train 1, in the usual manner, and a third or set key 28, having a web or wing 29, is employed to set a rock-bar or pivotedlever 38 for controlling the action of the alarm apparatus, as hereinafter described.

The rock-bar 38 is pivoted on a screw or pin 3 I,

which sets up sufficient friction in the joint to hold or maintain the rock-bar where set, in the several adjustments, under normal conditions. The rock-bar 38 is formed into the curve shown; the shorter end- 32- being reducedVV in width to form a safety gate across the key slot of the ignition lock and rest in` the arcuate groove I4 of the barrel I2 of said lock andI this position is maintained when the automobile is unattended. This gate portionacts against theft throughthe 'rock-bar to sound an alarm should a key or other instrument be inserted in the key slot I5 of the lock barrel I2, for such key or instrument would raise this gate slightly thereby partially rocking said bar on its pivot and release the alarm, as will be described presently;

At the extremity of the longer end 33 of the rock-bar 39, is formed a fork or yoke 34, one prong 01 side 35 of the fork being comparatively short, while the other or opposite prong 36, is outcurvedl to clear the escapement shaft 8, as at 3l, and terminates in a trip finger or extension 38, which is engaged by the web portion 29 of the set-key 28, in the operation of setting the position of the bar or lever 39.

As indicated in Fig. 5 of the drawings, a circular block 39 having a central bore 48, is fixed to the bottom or outer wallv 4I, of the alarm casing 3. The block has a reduced tubular portion t2, which extends forwardly through said wall 4Il and base plate I, as at 43, and located within the central bore 48 ofthe block, is a rotary key barrel144, itself provided with a central bore 45, (Figs. 1 toY 5) and diametrically opposite side slots 46' which register with properly located notches 46a and' 4Gb in the reduced tubular portion 42 in the use of the key 28 for the passage of the web 29 thereof, said bore and slots being adapted to receive a tubular body 4l, and opposite wings 48, of the key 28 for setting the lever 30. A fixed pin 49 projects through the central 5 bore 45 and over which the tubular body 4'I of the key 28 rotates, to center said key-body in said bore 45, when operated. The web portion 29 of the key 28 is the only portion thereof which performs any important function, the wings 48 10 merely acting. to turn the barrel 44 to properly position the slots 46. v

A portion of the block 39 and of the key barrel are cut away, as at 5I and 52, respectively, to formy a cavity or space for the web 29 of key 28 15 to. operate and further to receive the finger 38 of the rock bar.

The gate portion of the small end 32 of the rock-bar 38 is lowered by the beveled surface 59 at the forward end of the ignition key I'I 20 (Fig. 7) as said key enters the slot I5.

The operation of my device may be described as follows:

As above stated, the alarm can operate only when the rock-bar is rocked a part of its f-ull 25' movement up or down and in this partialV movement the yoke 34 will straddle the feather 9'4 with both arms 35I and 38 out of contact therewith thus permitting said feather and its supporting esoapernent shaft to vibrate and through the 30n hammer I8 to sound an alarm (Fig. 10'). When, however, the lever is moved' to the limit of its throw, to one side or the other, either one of said fork prongs 35 or 35 will be in locking contact with said feather 94 toy hold the escape- 35 ment against action.

In the views of Figs. 1 to 3, the ignition is shown as locked against operation as when the car is standing in a street unguarded. When it is desired to start the car, the owner thrusts 40V the alarm setting key 28 into the slots 45, and 4Gb (Figs. 1, 2, Band 8), after rst bringing one of the'slots45 into registering relation with slot 46h, and, with wing 29 engaging the under side of lock bar finger 38;, the owner then executes 45 about a quarterturn with said key in anv upward direction, (Fig. 3i). This will cause the forked end of bar 30 to move upwardly, the other end 32 moving downwardly out of the recess i4 of key barrel I 2 and the ignition key I5 may now 50H enter its slot and rotate barrel i2 without disturbing said bar 3U (Fig. 4). At the same time key 28 will cause the fork branch 35 to engage the feather 9' on escapement shaft 8 and lock the alarm against operation. Key 28 will also be 55 given a reverse one quarter turn to return to slot 46h and there to be removed from its barrel 44.

Wheny the owner again wants to leave the car unguarded and set thealarm into operative po- A sition against unauthorized tampering therewith, slot 45 will be brought into juxtaposition with slot 460iV (Fig. 1) andv key 28 entered in that position above the linger 38 and given about a quarter turn downwardly with its wing 29, as indicated, in Fig. 2 and, by dotted lines, in Fig. 3, and the lock bar 38 will be returnedv into the position shown in Figs. l to 3, and any instrument inserted into the key slot I5 o-f the ignition to an operative depth will rock said bar 38 into a 701 middle position, as described hereinbefore and illustrated in the diagram of Fig. 10, and the alarm willi constantly operate, thereby informing the people that the car is a stolen one. After this second style of setting: also, the key 28 must be 755 given a reverse quarter turn to return to the slot 46a. and there to be removed from the alarm setting mechanism. v

Key 26 serves to Wind up the alarm spring, as usual.

It is thought the operation and utility of the lock-alarm device Will be apparent Without further description, and While in the drawings there is illustrated a preferred embodiment of the invention it is to be understood that the structural elements thereof are susceptible to such variations and modications as fall Within the scope of the broader claims.

1. A lock-alarm device comprising in combination; means controlled by a removable key for locking and releasing parts of the ignition system of an internal combustion engine; key controlled means forsetting an alarm, and means located in operative connection with each of the said key controlled means adapted tobe set for releasing said alarm control means to sound an alarm When the ignition control lock is entered by a key.

2. A lock-alarm for automobiles, having an ignition lock With a revoluble barrel, an outstanding pin on said barrel, a lock bar mounted to slide at one side of said barrel; said lock bar having a projection against which the pin of said barrel operates to slide the lock bar into and out of locking position with a part of the ignition system of said automobile; an alarm device; said barrel having an arcuate groove, and normally inoperative means mounted to extend into said arcuate groove of the said lock barrel and into said alarm device respectively, and adapted to release said alarm device When the ignition lock is entered by a key.

3. A lock-alarm comprising a lock for the ignition system of an automobile; an alarm mechanism having an oscillatory shaft; and a swingable bar, an end thereof having operable connection with a part of said lock, the opposite end of said bar having a fork for operative action with a part of said oscillatory shaft of the alarm mechanism for controlling the same.

4. A lock-alarm for automobiles embodying a pair of casings; a base plate for supporting both casings in side-by-side relation; a key operated lock for controlling the action of an ignition apparatus located Within one casing; a key controlled alarm apparatus in the other casing; and a normally inoperative rock-bar extending through the Walls of said oasings from one apparatus to the other, adapted to be set to release the alarm apparatus when the ignition control lock is entered witha key.

5. A lock-alarm for automobiles, comprising,

a device for locking the ignition system; alarm means; a pivoted element having a reduced curved end and an enlarged forked end terminating in a projecting nger, the reduced end in one position, mounted to extend across the 5 key slot in said ignition lock, the forked end straddling an oscillatory part of the alarm means and controlled by a key operating against said nger for the purpose set forth.

6. A lock-alarm for automobiles, comprising a 10 face plate; ignition and alarm apparatus, carried by and separately placed on said face plate; key controlled means for locking the ignition apparatus; a rock-bar frictionally pivoted near the ignition locking means and away from its longitudinal 15 center to provide a short and a longer end; an escapement shaft in the alarm apparatus; a Wing on said shaft; said rock-bar operatively engaging at one end the ignition lock and at the other end the said wing of alarm apparatus, and key means op- 20 erable in the alarm apparatus for setting the rockbar in several positions as desired.

7. A lock-'alarm for automobiles, comprising a lock embodying a xed tumbler cage and a barrel revoluble therein, said barrel being formed with an 25 arcuate slot extending partially around it; a projecting pin on said barrel; a slide bar having a projection in thepath of said projecting pin when the lock barrel is rotated to urge said slide bar into locking contact with a part of the ignition 30 system of an automobile; an alarm device; and normally inoperative means adapted to be set to extend into said slot for causing the alarm device to be initiated when said means is disturbed by a key entering said lock. 35

8. The combination with a lock and devices for controlling the ignition system of automobiles; of a mechanical alarm mechanism; and a key controlled rock bar extending from a frictional pivoting center in one direction into operative rela- 40 tion With said ignition lock, and in the opposite direction into controlling relation with said mechanical alarm mechanism, for the purpose set forth.

9. A lock-alarm for automobiles comprising a 45 lock for the ignition system; an alarm device; a connection between the ignition lock andthe alarm device and key operated means for adjusting said connection, for initiating an alarm when the ignition lock is entered by a key. 50

10. A lock-alarm device, comprising an ignition lock having a key slot; an alarm mechanism; a vibratory element therein; and a rockable member, one end thereof forming a locking gate disposable across said key slot and the other end 55 normally in locking contact with saidvvibratory element.

GEDEON FAR/KAS.

Images