US1324547A

US1324547A - Joseph c

Info

Publication number: US1324547A
Authority: US
Publication date: 1919-12-09
Anticipated expiration: 1936-12-09

Description

J.- C. FORD.

' HAND LAMP.

APPLICATION FILED JUNE6, I919.

1 ,3249 547. Patented Dec. 9, 1919.

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UNITED STATES PATENT OFFICE.

JOSEPH C. FORD, F MADISON, WISCONSIN, ASSIGNOR 'IO FRENCH BATTERY & CARBON COMPANY, OF MADISON, WISCONSIN, A CORPORATION OF WISCONSIN.

HAND-LAMP.

To all whom it may concern:

Be it known that I, JOSEPH C. FORD, a citizen of the United States, residing at Madison, in the county of Dane and State of Wisconsin, have invented a new and useful Improvement in Hand-Lamps, of which the following is a specification.

This invention relates particularly to electric hand-lamps; and the primary object is to provide an improved lamp of this character, having special provision for mounting the reflector and lens in an improved manner.

A further object is to provide such a construction, having provision against acci; dental short-circuiting of the device.

The invention is illustrated, in its preferred embodiment, in the accompanying drawing, which represents a longitudinal sectional view, the batteries employed being shown .in elevation, however.

In the construction illustrated, represents a tubular casing which maybe of convenient size to be carried readily in the hand, or, if desired, in the pocket; B, a battery, here shown as comprising two dry cells B and B 0, a metallic reflector mounted on one end of the casing; C, a lens sur-.

mounting said reflector; D, an incandescentlamp mounted in the reflector; and E, a

contact device mounted on one side of the casing and equipped with a conductor E,

leading to the front endof the casing and a conductor E leading to the base-end of the casing.

The casing A comprises a tubular body 1 of insulating material, suchas' fiber, which is equipped at its base end with a 't\l;readed sleeve, or furriile, 2, upon which is ecured a metal cap 3, which supports a conical metal spring 4; a combination reflector and lens supporting. device 5 comprising a threaded metal sle ve 5 secured in the sleeve 5 screwed on to the projecting en Specification of Letters Patent.

Application filed June 6, 1919.

Patented Dec. 9, 1919.

Serial No. 302,094.

of the base end of the tubular body A, and secured thereto by a rivet 7 which is also secured to the thin copper strip which constitutes the conductor E Thus, it will be seen that the conductor E is in electrical connection with the spring 4. The cells of the battery B have zinc containers, and are provided at their upper or forward ends with central electrodes 8. The bottom of the zinc container of the lower cell rests upon the spring 4, and the bottom of the upper zinc container rests upon the electrode 8 of the lower cell, so that the cells are in series. The cells are inclosed in a'pasteboard tube B The lamp is screwed into a socket with which the reflector C is provided, and the central contact of the lamp bears upon the central electrode of the upper cell. The circuit is completed through the lamp socket, the reflector, the sleeve 5, and the conductor E, when the contact device E is closed. In the illustration, the contact device is shown provided with a button, or slide, 9, equipped with a spring shoe 9, Which is adapted to make contact with the lower end of the metal strip, or conductor, E.

The metal sleeve 5 is fitted in the upper end of the tubular casing A and secured thereto by a rivet 10 which connects the sleeve both to the casing A and the metal strip forming the conductor E.

The sleevej5? is equipped at its outer end with an inturned flange 11, upon which the peripheral flange of the reflector bears. The lens C, in turn, bears against the peripheral flange of the reflector C; and the clamping ring, or sleeve 5", is provided with a flange 12, which bears against the outer surface of the peripheral portion of the lens.

Thus, it will be seen that the reflector and the lens are securely clamped together, it being understood that the sleeve 5 is screwed front end of the casing, and a threaded metag\ onto the sleeve 5*.

of the member 5, the sleeves 5 and 5 being equipped with flanges between which the circumferential flange of the reflector and the circumferential portion of the lens are clamped, or secured; and a metal housing-sleeve 6, lined with insulation material 6 said housing-sleeve being screwed onto the member 5 and insulated therefrom by the insulating member, or material, 6*.

The sleeve 2 is fitted on the outer surface supporting device and reflector which form 110 The hand-lamp is thus an operative (le- 'v1ce, without the use of the housing-sleeve 6.

It is preferred, however, to supply the housing-sleeve 6 as a'finishing sleeve; and,'1n practice the sleeve 6, the ferrule 2, and the base-caf %are ordinarily nickel-plated, while the in ulation tube 1 may be of black fiber, so that the device will present an ornamental appearance. Inasmuch as the housing-sleeve 6 .is insulated from the reflectorfrom the appearance of the device.

a part of the circuit, there is no danger of the hand-lamp becoming short-circuited, even though the hand-lamp be laid upon a metal plate, which would thus afford a conducting medium between the base-cap 3 and the housing-sleeve 6. It will be noted, in this connection, that the outer end of the rivet 10 is counter-sunk and free from contact with the sleeve 6.

The construction described is simple, thoroughly practicable, and provides a secure connection between the insulating casing 1 and the reflector and surmounting lens. As shown, the threading of the parts is accomplished by a spinning or pressing process, which adds to, rather than detracts,

However, any suitable design may be employed for making connections 'and giving a finished appearance to the device. In the construction illustrated, the reflector-andlensretaining sleeve 5 may be unscrewed from the permanently secured sleeve 5 to give access to the lamp bulb.

The foregoing detailed description has been given for clearness of understanding only. and no unnecessary lin'iitation should be nmlerstood therefrom, but the appended claims should be construed as broadly as permissible. in view of the prior art.

What I regard as new and desire to secure by Letters Patent is:

1. In a hand-lamp insulating casing, a

the combination of an battery therein, a closure for the base-end of said casing, a spr ng interposed between said closure and the battery and serving to establish connection with the battery, a reflector-supporting device comprising a sleeve secured to the other end of the casing and a companion sleeve titted thereon, said sleeves being provided with tlanges, a metal reflector and a lens secured between the flanges of said sleeves, a lamp mounted in said reflector and having contact with the battery, a contact device mounted on said casing, conductors extending from said contact device within said casing and having electrical connection with said tirstnamed sleeve. and with said spring, and a housing-sleeve enveloping said I second named sleeve and the upper portion of said casing and insulated from said secondnamed sleeve.

2. In a hand-lamp, the combination ol an insulating casing, a closure for the basecnd thereof, a battery in said casing, a contact device mounted on one side of said casing. an internal conductor leading from said contact device to the base-end ot' the tasing and having electrical connection with the base end of the battery, an internal conductor leading from said contact device to the forward end of said casing, a sleeve titted into the forward end of said casing and in electrical connection with said last-named conductor, said sleeve being provided with an extending threaded portion and an inturned flange, a reflector having a peripheral flange bearing thereon and equipped with a lamp having electrical connection with the forward end of the battery, a lens surmounting said reflector, a clamping sleeve screwed on to said first-named sleeve and having a flange engaging the outer surface of said lens, and a l1ousing-sleeve having an insulating lining, said housingsleeve being screwed onto said clamping sleeve and extending over the forward end-portion of the insulating casing.

JOSEPH C. WORD.