US1807129A - Portable electric lamp - Google Patents

Description

May 26, 1931. s. H. NUCKOLLS- PORTABLE ELECTRIC LAIP Filed April 26, 1950 Patented May 26, 1931 r Price SAIEUEL I-I. NUCKOLLS, OF STONE MQUNTAIN, GEQRGIA, ASSIGNOR- TO GEORGE FRANCIS WELLIS, OF ATLANTA, GEDRGIA PORTABLE ELECTRIC. LAMP Application filed April 28,

The invention relates to an improved construction of portable electric lamp to adapt the same for use as an ordinary flash-light, when the rays are directed through the lens in the forward end of the casing, or which maybe employed to direct the light laterally of the casing in various degrees ofangular adjustment, the diflerent modes of use being made possible by providing the lamp with a hinged bracket upon which the electric bulb and the reflector are carried, which bracket is mounted within the casing with the socket and reflector normally in alignment with the longitudinal axis of the casing, but is capable of being swung on its pivot to project the reflector through a lateral opening in the casing and thereby directthe light laterally in any desired direction, the opening in the casing being controlled by a sleeve rotatably mounted on the casing and provided with an opening adapted to be brought into and out registry with the opening in the casing.

The invention is illustrated in the accompanying drawings, in which Fig. 1 is a side elevation, partly in section, of the lamp.

Fig. 2 is a side elevation showing the sleeve in closing position.

Fig. 3 is a section on line 3-3 of Fig. 1.

Fig. 4 is a detailed view of the block upon which is mounted the bulb and reflector carrying arm.

Referring to the drawings, 1 indicates the casing proper, which is preferably made oi sheet metal or suitable plastic material, provided at its forward end with screw threads 2 formed in the body of the material, which threads are engaged by the threaded end 01 a tubular extension 3, which, in turn, is provided at its outer end with formed screw threads 7 which are engaged by the threaded flange 6 of an end cap 5, by means of which the lens 8 is secured in position. The tubular extension 9 is cutaway at one side to provide a substantially rectangular opening 9 and rotatably engaging the tubular extension 3 is an outer sleeve 25 which is provided with an opening of the same dimensions as the opening 9 in the extension 3 and which is adapted to be brought into and out of regis- 1930. Serial No. 447,629.

try with the opening 9, as the sleeve is rotated.

Mounted within the upper portion of the member 1 of the tubular casing is a disk or block 10, of insulating material, which is conveniently secured in position by threading the peripheral surface thereof to engage the screw threads formed in the end of the member 1. is a stud 14, which constitutes the terminal for engaging the central terminal of the upper dry cell employed in lamps of this character. Fixed to the top of the block 10'is a plate 13, which is traversed by'the stud ll and, therefore, in electrical contact therewith and on the top of the said plate 13 there is secured a spring clip 15 in which is pivotally mounted, by means of a screw stud 15, an arm 16, which may be conveniently formed of a strip of metal folded upon itself and provided with an eye 17 at its outer end, the clip and the pivoted arm constituting a bracket or support for the electric bulb and the reflector, the pivoted arm being adapted to be swung inwardly in a horizontal position, as shown in Fig. 1, or moved to any other position of angular adjustment about the pivot 15 up to substantially 180 of an arc. Mounted in the eye 17 of the arm 16 is an insulated bulb receiving socket 155, which is adapted toreceive and and support the usual electric bulb and also the reflector 19.

Connected to and spaced from the bottom of theblock 10 by suitable bolts and washers is an annular plate 20, to which is connected a conductor 21, which, in turn, is attached to one of the contacts of the usual switch employed in devices of this character. Said plate also carries a binding post or connecting screw and washer by means of which one end of an insulating conductor 22 is attached to said plate, the other end of said conductor being secured to the metallic shell of the socket 18.

If desired, the screw threading 4 on the tubular extension 3 and the mating threads 2 on the forward end of the tubular member 1' may be made of suflicient extentto permit the extension 3 to be adjustedlongitudinally Fixed centrally within the block 10 I of the casing 1 and thereby adjust the relative position betweenthe lens 8 and the focal point of the reflector. Obviously, the re fiector may be given any Suitable or desired form, provided the greatest diameter thereof will not exceed the width of the openings in the tubular casing and the sleeve, when said openings are brought into registry.

When the device is to be used as anordinary flash-light, the sleeve 25 is rotated to bring the opening 26 therein entirely out of registry with the opening 9 in the casing and the arm 16 of the bracket carrying the lamp and the reflector will be swung't'o bring the longitudinal axis of the lamp socket and the reflector into coincidence with the longitudinal axis of the casing, in the relation shown in Fig. 1. In this adjustment, when current passes to the lamp, by operating the switch and the filament is brought to incandescence, the light is directed longitudinally of the casing through the lens and the concentration of the light may be varied by adjusting the tubular extension 3 longitudinally of the main casing section 1, so as to move the lens toward or from the focal point of the reflector. lVhen, however, it is desired to support the lamp vertically and direct the light laterally, the sleeve 25 is rotated to bring the opening 26 therein into registry with the opening 9 in the extension 3 of the casing, after which the pivoted arm 16 of the'bracket is swung upwardly and outwardly, thereby projecting the reflector through the openings to any desired degree of cant or inclination, so that the light will be reflected'in the proper direction. Two positions of adjustment are illustrated in Fig. 1, thefull' line position showing the normal adjustment of the device for directing the light longitudinally of the casing through the lens, and the dotted line position showing the arm 16 moved to a vertical position, so that the longitudinal axis of the lamp socket and the reflector is horizontal. It will be noted, however, that any desired degree of adjustment of the arm 16 about its pivotal axis may be made to direct the light from the bulb and reflector outwardly and upwardly or outwardly and downwardly, within the range of the swinging movement of said arm, which is substantially 180, and the extremelimit of plvotal movement of said arm, may be fixed by suitable stops on the supporting clip member 15, as indicated in Fig. 1.

What I claim is: i

1. A portable lamp including a tubular casing having a lens carrying cap on its outer end and a lateral opening adjacent said end, an insulating block fixed in the casing adjacent said opening, a bracket having a pivoted arm fixed to the outer face of said block, a lamp socket and a reflector fixed to said arm,

' a rotatable sleeve on said casing having an opening adapted to be brought into and out of registry with the opening in the casing, and conducting connections to the lamp socket and bracket respectively.

2. A portable lamp including a tubular casing having a lens carrying cap on its outer end and a lateral opening adjacent said end, an insulating block fixed in the casing adjacent said opening, a bracket having a pivoted arm fixed to the outer face of said block, a lamp socket and a reflector fixed to said arm, a rotatable sleeve on said casing having an opening adapted to be brought into and out of registry with the opening in, the casing, a central terminal stud in said block connected to said bracket, a switch on the easing, and a conductor between the switch and the lamp socket.

3. A portable lamp including a tubular casing having a tubular extension threaded to its fore end, said extension having a lateral opening therein, a lens carrying cap on the outer end of the extension, a sleeve rotatable 011 said extension and having an opening adapted to be brought into and out of registry with the opening in the extension,an insulating block in threaded engagement with the outer end of the casing proper, a bracket having, a pivoted arm fixed to the outer face of saidblock, a lamp socket and a reflector fixed to said arm, and conducting connections for the lamp socket and bracket respectively. V j

4. A portable lamp including a tubular casing having a tubular extension threaded to its fore end, said extension havinga lateral opening therein, a lens carrying capon the outer end of the extension, a sleeve rotatable on said extension and having an opening adapted to be brought into and out of registry with the opening in the extension, an insulating block in threaded engagement with the outer end of the casing proper, a bracket having a pivoted arm fixed to the outer face of said block, a central terminal stud in said block connected to said bracket, a lamp socket and a reflector fixed to said arm, a switch on the casing, and a conductor between the switch and the lamp socket.

In testimony whereof I aifix my signature.

SAMUEL H. NUCKOLLS.

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