US2493112A - Signaling device - Google Patents

Description

Dam E, 195@ Filed June 16, 1947 L. CRISTOIPHER SIGNALING DEVICE 2 Sheets-Sheet l L udow'c Buucntor Crvs fop hef Gttomegs Jan. 3, 1950 1 CRISTOPHER 2,493,112

SIGNALING DEVICE Filed June 16., 1947 2 Sheets-Sheet 2 Snventor Ludovic C/Is'op her' Cttornegs Patented Jan. 3, 1950 UNITED lSTATES PATENT OFFICE SIGNALING DEVICE Ludovic Cristopher, Kansas City, Mo.

Application June 16, 1947, Serial No. 755,029

3 Claims.

This invention relates to oscillating signals, and more particularly to wigwag signals adapted to be attached to an automobile, the same being an improvement over the signal devices disclosed in my Letters Patent Nos. 2,251,116, 2,265,062 and 2,302,421.

It is the principal object of my invention to provide a wigwag signal operable within a housing with few moving parts so that the signal from the lightwill be indicated through openings in the housing provided with lenses.

Other objects of the present invention are to provide a signal device with the moving elements substantially counterbalanced; to provide a signal device having a positive operation for controlling current flow to the oscillatory electromagnet whichactuates the signal; to provide a device of this character having a signal arm with a wide amplitude of movement and means for oscillating the signal device comprising armatures operatively connected therewith and movable by an electromagnet; to provide resilient centering means for the signal element; to provide means for alternately energizing the electromagnet comprising a contact element movable with the armatures and having a contact element insulated from one of. said armatures; and to provide a device of this character simple, economical to manufacture, and efllcient in operation.

In accomplishing these and other objects of the present invention, I have provided improved details of structure, the preferred form of which is illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective view of my invention showing the bracket for attaching the device to a support.

Fig. V2 is a vertical transverse sectional view through the device.

Fig. 3 is a front elevational view of the device larly illustrating the mounting of the signal arm and the irictional contact of the light connection. Fig` 7 is a fragmentary detail in perspective particularly illustrating the contact points of the armatures.

Fig. 8 is a diagram of the electrical circuit.

o body member.

Referring more in detail to the drawings:

I designates a signal device embodying the features of my invention comprising a housing 2 of substantially cylindrical shape and includingI a body member 3 and a cover 4 of slightly larger diameter than the body s0 that it will engage over the side edges or flanges 5 of the body. The side edges are provided with openings adapted to receive screws or the like 6 to hold the cover on the The housing is provided with a bracket or arm l having a plurality of apertures 8 for mounting of the signal device on an automobile and preferably on the license plate bracket (not shown).

Mounted on the back face 9 of the body member 3 by peening or the like is a shaft IU for pivotally mounting an arm I I having a socket I2 for an electric light bulb I3.' The shaft II) has an enlarged end I4 having a recess I5 adapted to contain an insulating material I6 in which is mounted a pin I1 providing a connection for an electric cord or conduit I8.

A washer I9 engages between the arm II and the back face 9 of the housing to space the arm from the housing. The arm carries a shelf 20 upon which the socket I2 is mounted and is provided with an opening 2| adapted to receive contact members 22 and 22' leading from the light socket to engage on each side of the pin I1 to provide a frictional connection on the pin when the arm is oscillated. The entire operating mechanism of the signal is attached to and carried by the section 3 of the housing.

An electromagnet 23 is mounted on the flange or side edge 5 of the housing in any suitable manner having the usual core upon which the windings of the magnet are wound. Pivotally mounted upon the body member 3 by a shaft 25 and adjacent the electromagnet is a pair of armatures 26 and 21 made of soft metal as is the usual practice. The armatures are substantially U-shaped having transverse portions 28 and 29 provided with an insulating material 3l! and 3l to prevent the armatures from sticking due to the residual magnetism of the magnet.

One end of the U-shaped portion of the armatures is pivotally mounted on the shaft 25 as indicated at 32, and the opposite ends of the arms of the armatures are provided with laterally ex"- tending iianges 33 and 34. Secured' to the flange 34 by rivets or the liker 35 is a plate 36 having a contact point 31. Secured to the ange 33 of the armature 26 by a rivet or the like 38 is an insulating strip 39. Avstrip of insulating material 40 is mounted between the strip 39 and the flange 33 and extends beyond the flange 33 as indicated at 4I Mounted on the outer end of the strip 39 is a plate 42 extending transversely of the strip and secured thereto by a rivet or the like 42 curved as indicated at 43 forming an arm 4:2 having on its underneath side a contact point 45 adapted to cooperate with the contact point 31. The rivet or pin 42 serves as a post or terminal for an electrical conduit 41 leading to the electromagnet.

The arm II has an extension 48 to which is attached one end of a coil spring 48, the opposite end being attached to a bracket 5l] carried by the laterally extending ilange 34 of the armature 21.

Mounted on the inside edge of the flange 5 by welding or other suitable means is a bracket 5I to which is attached an insulating member 52 by rivets or the like 53 as is the usual practice. A terminal 54 is carried by the insulating member. The cord or conduit I8 having one end f,

connected to the pin I1 of the signal arm has its opposite end connected to the terminal 54. Also leading from this connection 54 of the conduit I8 is an electrical connection or conduit 55 leading to the electromagnet 23. The flange 5 is provided with an opening adapted to receive an electrical conduit 51 leading from a source of supply (not shown), and the `conduit engages in the opening by a grommet as indicated at 58 and is also connected to the terminal 54 on I? the insulator 52 as indicated at 53. Connected to the transverse portion 28 of the armature by riveting or other suitable means is a light flat spring 60 of suicient length to engage on the upper side face of the bracket 5l for the purpose of bringing the ,armature 26 to a normal position (Fig. 3) when the current is interrupted. Carried by the back of the housing '2 above spring 60 is a stop 6I. This stop is placed about one-half of the distance of the spring from its anchor point. This is to increase the strength of spring 6G when pulled upward by the weight of the arm II. The stop is in the form of a bracket having an arm which is adjustable to the desired vertical position.

Located within the cover 4 of the housing 2 is a disk or cylindrical member 62 of a size to t against the edges of the flanged portion 5 of the back member 3 as best illustrated in Fig. 2. The disk 62 is provided with a plurality of openings 63 adapted to align with openings 64 in the cover 4 adapted to contain lenses 65. I preferably provide three of these lenses, one to the right side of the housing, one to the left side of the housing, and one substantially in the center of the upper edge of the housing, so that the signaling light when oscillating will reflect through the openings in either right or left position or substantially vertical neutral position.. The openings in the cover 4 are provided with circular flanges 66 (Fig. 2) adapted to receive the annular anges 61 of the lenses 65, the opposite faces of the flanges bearing against the disk 52 also as best illustrated in Fig. 2. I also provide a gasket 68 to engage between the flanges 66 of the cover and the anges 61 of the lenses to prevent moisture from entering the housing around the lenses. The lenses are held in place by a rivet or the like 69 extending through the disk 62 and cover 4 (Fig. 2).

The arm II comprises substantially a flat rectangular member, and the upper end is provided with a circular portion 1l! extending along the back and circular side anges 'II and 12 along a portion of the sides of the bulb I3 as best illustrated in Fig. 2, the inside of the member 10 being provided with a reflector surface. The flanges 1I and 12 will prevent light rays from extending to the side lenses when the signal light is not directly behind the lenses. The light will thus be shown only when directly behind the reflectors upon oscillation of the light.

Operation of a device constructed and assembled as described is as follows:

Current is supplied through conduit 51 by turning of a switch (not shown), and the conduit 51 being in contact with the conduits I8 and 55, respectively, current will energize and excite the electromagnet 23 and the light bulb I3 on the signal arm I I. Since normally the armature 21 is pulled upwardly by the Weight of the oscillating arm I I and light through spring 49 and is stopped only by armature 26 through the contact points, it follows that said contacts are closed normally (Fig. 3). As the current is turned on, the armature 26, being directly above the electromagnet, will be attracted downwardly with a stronger force than armature 21, which is slightly oil-center of the magnetic eld, and also is held back by the weight of the oscillating arm II. The armature y26 moving downwardly will pull with it armature 21 through the contact points 31 and 45, thereby keeping them closed until armature 26 reaches the top of the electromagnet 23. By this time armature 21 in its descent will have imparted a pull to arm II through spring 49 suflcient to swing the oscillating arm I I to the opposite side .of its semicircular movement. As armature 26V reaches the top or the electromagnet 23, armature 21 will continue a slight travel downwardly (Fig. 4), thereby breaking contact with armature 26 and interrupting the electromagnetic circuit. The top of the electromagnet is beveled slightly from the armature 26 toward armature 21 to allow greater travel of the latter to break the circuit through separation of the contact points carried by the outer ends of the armatures. The armature 26 is then immediately returned to its higher normal level by spring 60, thus widening the gap between the two contact points. The oscillating arm II now loaded with kinetic energy will pass dead center or vertical position and continue its travel to the opposite side, gradually pulling armature 21 up to a stop against the contact of armature 26, thus closing the electromagnetic circuit. The momentum of the oscillating arm will carry the same farther than its normal position by stretching coil spring 49 and also at spring 60 against stop 6I. After the swinging member has reached its farthest point of oscillation (Fig. 5), the recoil from the spring 49 and flat spring 60 and pull of the electromagnet will cause the swinging arm I l to reverse its journey and the same action will take place as described above when the arm I I started its swing from the opposite side. This pullpull action of one electromagnet is unique in the fact that the driven member changes direction of motion at every pull.

Spring 6B is weaker than spring 4S, and it absorbs the shock of the swinging arm i and by yielding, permits armature 26, and consequently armature 21, to reach a higher level above the electromagnet, and the armatures arie, therefore, Aout of the electromagnets effective range momentarily, thus permitting a slower oscillation of the arm. By adjustment on a vertical plane, the

stop 8l controls the amplitude and speed of the oscillating member.

Oscillation of the arm will cause the light to alternately appear before the respective lenses 65 through the openings in the cover and disk of the housing to indicate stopping of the vehicle. When the circuit is interrupted, the spring 49 automatically returns the moving parts of the signal to neutral position.

From the foregoing it will be obvious that I have provided a simple and inexpensive signal device having a movement which more easily attracts the attention of drivers in following vehicles and one having few moving parts which obviates wear on the device.

What I claim and desire to secure by Letters Patent is:

1. A device for producing oscillatory motion including a support, a shaft carried by said support including a pin insulated therefrom, an arm loosely mounted on said shaft, armatures pivotally mounted on said support, means including a `coil spring connecting the arm With one of said armatures, an electromagnet carried by said support, means for alternately energizing said electromagnet whereby said arm will be oscillated, and means limiting movement of said arm, said last named means including a stop and a spring carried by one of the armatures and adapted to engage under said stop.

2. A device for producing oscillating motion to an object including a support, a shaft carried by said support, an arm loosely mounted on said shaft, armatures pivotally mounted `on the support, contact points carried by one of the arma- 2 tures, an insulating piece secured to the other armature, an arm carried by said insulating piece having a contact point adapted to normally engage the other contact point, means including a coil spring connecting the rst named arm with one of said armatures, an electromagnlet carried by said support, means on said armatures to allow one armature to pivot past the other to break the contact for alternately energizing said electromagnet to oscillate said arm, and means limiting movement of said rst named arm, said last named means including a stop and a spring carried by one of the armatures and adapted to engage under said stop.

3. A device for producing oscillatory motion to an arm including a support, a shaft carried by said support, an arm loosely mounted lon said shaft, armatures pivotally mounted on the support, contact points carried by one of the armatures, an insulating piece secured to the iother armature, an arm carried by said insulating piece having a contact point adapted to normallyengage the other contact point, means including a coil spring connecting the rst named arm with one of said armatures, an electromagnet vcarried by the support, means on said armature to allow one armature to pivot past the other to break said contact for alternately energizing said electromagnet to alternately oscillate said arm, and v means limiting movement of said arm.

LUDOVIC CRISTOPHER.

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

UNITED STATES PATENTS Number Name Date 1,262,326 Grabe Apr. 9, 1918 1,751,018 Signor Mar. 18, 1930 2,002,330 Signor May 21, 1935 2,035,841 Signor Mar. 31, 1936 2,442,203 Harrington May 25, 1948

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