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Publication numberUS1295333 A
Publication typeGrant
Publication dateFeb 25, 1919
Filing dateMay 16, 1918
Priority dateMay 16, 1918
Publication numberUS 1295333 A, US 1295333A, US-A-1295333, US1295333 A, US1295333A
InventorsChristoph A Kramer
Original AssigneeChristoph A Kramer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Portable lamp.
US 1295333 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




Patented; Feb. 25, 1919.



Specification of Letters Patent.

Patented Feb, 25, 1919.

Application filed May 16, 1918. Serial No. 234,920.

therefor including a magnet, embodied as a casing for a portion of the lamp, and by means of the magnetized casing the lamp may be attached to a metal surface and there held by magnetism. Preferably the electromagnet is employed, although a permanent magnet might 'be utilized, but in the present invention the source of energy for the illumination of the lamp is from a battery or other power that also magnetizes the casing to form the magnet.

The primary object of the invention is the provision of a novel and effective supporting means that may convenientlybe attached to metallic surfaces, as for instance the iron portion of an engine, body or frame of machinery, or an automobile, to support a portable lamp of the well known trouble variety.

The invention consists essentially in the combination with the lamp, of a body member or casing which is magentized and strong enough to support the weight of the lamp and body, as will be hereinafter more fully pointed out and claimed.

In the accompanying drawings one complete example of the physical embodiment of the invention is illustrated, constructed and arranged according to the best mode so far devised for the practical application of the principles of the invention.

Figure 1 is a side elevation of a portable electric lamp according to the present invention.

Fig. 2 is a front view of the lamp.

Fig. 3 is a longitudinal section of the lamp and electro-magnet forming the body portion of the lamp.

Fig. 4 is an electric diagram of the lamp and its connections.

In the preferred form of the invention as illustrated in the drawings, a typical or standard electric incandescent lamp 1 is provided with its reflector and shade 2, and

the metallic reflector casing 3 is provided with a reduced, threaded, sleeve a that is screwed into the end of an insulated barrel 5. The bulb has a threaded plug 6 screwed into the end of the barrel and the contact points for the lamp-are indicated at 7 within the barrel. Wires 8, 9, connect the lamp with the battery 10, and a plug 11 for the wires is threaded into the barrel at the end thereof opposite the lamp.

In use this barrel is inserted within the metal sleeve 12, which is a cylindrical core for the magnetizin wires or coil 13, of the elcctro-magnet, in icated as a whole by the number 14. The extension Wires 15 and 16 from the wires 8 and 9 lead into the magnetizing cOil through openings in the insulat ing barrel and the core of the magnet, and a pair of end plates 17 and 18 for the coil complete the magnet, brace or connecting bars 19 being employed to connect these plates.

The plates are of iron, and as shown in the drawing they are rectangular with parallel edges, but of course other forms may be given to these plates, it being only neces sary that they shall have parallel smooth edges so that they may be placed against a straight edge or surface, as indicated in Fig. 2, and the power of these magnetized plates will hold the device and support it in position as indicated.

The utility of the-device will readily be apparent and it will be seen that the lamp may be supported by applying any one of the four pairs of parallel edges of the end plates to a smooth surface, or other surface adapted to receive and hold the plates when magnetized, and in this manner the portable lamp may be supported in convenient position for use and may be handled with great facility and despatch.-


The combination in a portable electric lamp of an insulating barrel to support the lamp, and wires from a suitable electric supply leading into the lamp through the barrel, a cylindrical core incasing the barrel and amagnetizing coil surrounding the core and connected with the lead in wires, and end plates for the coil having poly-sided parallel edges adapted to be held by magnetism to a supporting surface.

In testimony whereof I afiix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5416685 *Aug 26, 1994May 16, 1995Myers; James R.Magnetic utility lamp
U.S. Classification362/398, 248/206.5, 439/40
Cooperative ClassificationF21V21/0965