US1403538A

US1403538A - Battery hand lamp

Info

Publication number: US1403538A
Application number: US371599A
Authority: US
Inventors: Charles F Burgess
Original assignee: Burgess Battery Co
Current assignee: Burgess Battery Co
Priority date: 1920-04-06
Filing date: 1920-04-06
Publication date: 1922-01-17
Anticipated expiration: 1939-01-17

Description

.I c. F. sumar-iss. BATTERY HAND LAMP. APPLICATION FILED APR.`6| |920.

Patented Jan. 17, 1922.

.UNITED STATES PATENT OFFICE.

CHARLES F. BURGESS, 0F MADISON, WISCONSIN, ASSIGNOR TO BURG-ESS BATTERY COMPANY, 0F MADISON, WISCONSIN, A CORPORATION 0F WISCONSIN. i

BATTERY HAN D LAMP.

Application led April 6,

To all whom t may concern:

Be known that I, CHARLES F. BURGnss, a citizen of the United States, residing at Madison, in the county of Dane, State of Wisconsin, have invented certain new and useful Improvements in Battery Hand Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and usethe same.

Battery hand lamps as ordinaril' constructed throw a rather concentrate beam of light of relatively small diameter. For some purposes, as for work at a desk or around machinery, a more diffused light is desirable.

It is one of the objects of the present invention to provide a battery hand lamp so constructed that it easily can be converted for use in delivering diffused light, or the usual concentrated beam, as occasion may require.

To this end, the reflector for the lamp is of special construction, and is removable with the lens and lens-supporting ring to leave an operative battery lamp, adapted, like the ordinary candle, for distributing light in substantiallyall directions.

It is a further object of the present invention to so mount the lamp and its associated parts that the lamp is protected against shock or impact from tle battery,v

is readily accessible for adjustment or renewal, and is so mounted that ready access can be had to the battery chamber, to the switch mechanism, and to all operative parts of the structure.

It is a further object of the present invention to permanently mount the lens and reflector in the lens-supporting ring or head so that on removal of the head all of these parts come off together and can be reinstalled without inconvenience or difficulty.

Further objects and advantages will become clear from the following detailed description, which is to be taken in conjunction with the accompanying drawings,

wherein- Fig. 1 is anelevation of a battery candle to Specification of Letters Patent.

Patented Jan'. 17, 1922.

1920. serial No. 371,599.

which a lens-supporting ring can be added if a concentrated beam of light is desired;

Fig. 2 is a sectional elevation through ay complete hand lamp; and

Fig. 3 is a section on the line 3 3 of Fig. 2.

In the embodiment illustrated in the drawing, the dry cells 1 and 2, of which any suitable number may be provided,l are arranged end to end in series relation within a paper tube 3. The naked bottom of the lowcrmost dry cell is electrically connected through a helical spring -1 with a metal bottom cap 5 screw-threaded to the lower end of the metal tube G, which forms the casing of the hand lamp.

At the front end of casing 6, and detachably connected therewith, as by means of radial pins T and bayonet slots 8, is a metal collar 9 with a flange 10 at its front edge. In this collar is screwed or otherwise fastened a bumper block 11 of insulation, such as hard fiber, carrying in a central opening, and preferably screw-threaded thereto, a socket 12 for an incandescent lamp 13. The upper edge of this socket may be flared outwardly to form a small reflecting surface. Beneath this socket is an enlar ed cavity wherein is an S-shaped leaf spring 14;, with which the upper or carbon electrode 15 of the topmost dry cell makes contact. A flanged metal thimble 16. serves as a guard to prevent the spring from dropping out of the cavity. The upper leaf of the spring makes contact with the inner terminal 17 of the lamp.

Mounted on casing 6 is the usual thumb button 18 and slidinop finger 19, the front scribed, there may be and preferably is provided a detachable head, the details of which may vary, but one satisfactory embodiment of which is illustrated in Fig. 2. The flaring head 22 there shown has threaded engagement with the detachable collar 9 and carries reflector 23 and a lens 24. The lens may be convex or plain and `seats on a flange 25 of the reflector. Head 22 is shaped with a shoulder 26 on which. this reflector flange seats and the upper edge of the head 22 is spun over to form a flange 27 by which the lens and reflector are permanently attached to the flaring head 22. rThe opening at the center of the reflector is larger than the lamp bulb and preferably is larger than the upper flaring portion of the lamp socket 12, so that a small annular insulating air gap 28 intervenes between the reflector and the lamp socket. The lens-supporting head is preferably smooth on its outside, except for the threads by which it may be attached to collar 9.

lith the arrangement above described, the usual concentrated beam of light is thrown by the hand lamp when the switch is closed at screw 20, and if a diffused light is desired, it is only necessary to unscrew the flaring head from the other parts to convcrt the hand lamp into the battery candle shown in Fig. l. This adjustment may be made even when the lampis burning and without disturbing in any way the normal operative relation between the battery and the incandescent lamp. If but a slight alteration in the character of the beam is desired, this may be effected by partially unscrewing the head, for by so doing the re- ,flector shifts .with respect to the lamp, and *the filament of the lamp moves with respect to the focii of the lens, and of the vjeflector, with resultant changes in the character of the beam delivered by the hand lamp.

The batteries can, of course, be renewed through the bottom end of the casing, but if for any reason access is desired through the front end of the battery casing, as, for instance, to force out dry cells that have become swollen and stuck, or for adjustment or repair of the switch mechanism, etc., collar 9 can be rotated to free pins 7 in their bayonet slots, and thereupon collar 9, with all the parts carried thereby, can be withdrawn. and the top of the battery be exposed.

The facility with which the hand lamp can be taken apart and put together is of great convenience to the user, and particularly to salesman demonstrating the device, for the reflector and the lensare always held in proper' operative relation to the enlarged head` and the other adjustable parts are carried by ring 9. The bright surface of reflector 23 need not be touched by the llngers and so keeps bright even though it may have a delicate and highly polished face.

Other objects and advantages of the construction described will be apparent to those skilled in this art, and changes in details of the several parts are contemplated within the scope of the invention, as defined by the appended claims.

l claim:

l. A battery hand lamp having a lamp and an enlarged outwardly flaring metal head with a lens and reflector attached thereto and removable therewith from the hand lamp, said lens and reflector both being permanently held between a flange and shoulder of said flaring metal head and being movable therewith when the distribution of the beam of light is to be altered, said reflector having an opening thro-ugh which the bulb of said lamp will pass.

2. A battery hand lamp having a lamp and a casing and having an enlarged outwardly flaring metal hea-d threaded to said casing, a. lens and a reflector in said head and removable therewith from the hand lamp, said lens and reflector both. being permanently held between a flange and shoulder at the front edge of said flaring metal head, and being movable therewith to change the distribution of the beam of light when said head is turned on the threads of said casing, said reflector having an opening through which the bulb of said lamp will pass, substantially as described.

3. In a battery hand lamp, the combination of ay battery, a casing therefor, an insulating disc closing the end of said casing and secured thereto to take the thrust of the battery, a lamp carried by said disc and protruding beyond the end of said casing and in operative relation to said battery to form a complete battery candle, a reflector for said lamp, and a flaring metal head supporting said reflector and movable therewith when the distribution of the beam of light is to be alt-ered.

4. In a battery hand lamp, the combination of a lamp, a casing, a Inletall head threaded to the front end of said casing, a reflector held in position by said metal head and having an opening through which said lamp will pass, a battery in said casing, means supporting said lamp and taking the thrust of the front end of the battery, and a spring completing lthe electrical connection from said battery to the inner terminal of said lamp.

5. In a battery hand lamp, the combination of a casing, a. battery of dry cells therein, a. lamp connected with one terminal of said battery, a. socket in which said lamp is threaded, a rigid insulating support for said socket, said support being secured in said casing to take the forward thrust of the battery, a reflector insulated from said socket ilo and spaced therefrom and movable with respect thereto to focus the light, and means for establishing a switch-controlled electrical connection from the other terminal of said battery to said socket.

6. In a battery hand lamp, the combination of a battery, a lamp in operative relation thereto, a casing for said battery, an intion of a. battery, a casing therefor, a lamp,-

a. socket for said lamp, an insulating disc closing the end of said casing and taking the forward thrust of the battery and supporting said socket, a reflector insulated from said socket and having a central opening through which the lamp bulb will pass, and means for adjusting said reflector with relation to said socket to change the focus of the beam of light.

8. In a battery hand lamp, the combina.- tion of a battery, a lamp in operative relation thereto, a socket for said lamp, a disc supporting said socket and taking the for'- ward thrust of the battery, a reflector insulated from said socket, and means for moving said reflector withV respect to said .socket when the distribution of light from said lamp is to be altered.

9. In a battery hand lamp the combination of a battery, a casing therefor, an insulating disc closing the endof said casing,

a threaded socket in said insulating disc, a

lamp in said socket in operative relation to said battery to form a candle, an outwardly flaring metal head detachably secured to said casing, and a reflector carried at the .outer edge of said flaring metal head and having an opening through which said lamp will pass, said reflector being adapted to seat on said insulating disc when desired, substantially asl described.

10. In a battery hand lamp the combination of a battery, a casing therefor, an insulating disc closing the end of said casing, a threaded socket carried by said insulating disc, a lamp in said socket in operative relation to said battery to form a candle, a metal head detachably secured to said casing, and .a reflector carried at the outer edge of said metal head and having an opening through which said lamp will pass, the edge of said opening being always separated from said socket by an insulating air gap .and said reflector being adjustable with respect to said socket when the distributionl of light from said lamp is to be altered, substantially as described. A

11. In a battery hand lamp the combination of .albattery, a casing therefor, a rigid insulating disc at the end of said casing, a threaded socket in said insulating disc, a lamp in said socket in operative relation to said battery to form a candle, an outwardly flaring metal head detachably secured to said casing, and a reflector permanently secured at the outer edge of said flaring metal head and having an opening through which said lamp will pass, the edge of said opening being always separated from said socket by an insulating air gap and said reflector being adjustable with respect to said socket when the`distribution of light from Said lamp is to be altered, substantially as described.

12. In a battery hand lamp the combination of a battery, a metal casing therefor, a collar detachably secured to the front end of said casing, a rigid insulating disc secured in said collar, a threaded socket in said insulating disc, a lamp in said socket in operative relation to said battery to form a complete and operative battery candle, an outwardly flaring metal head secured to said collar and removable therewith from said casing, and a reflector carried at the outer edge of said flaring metal hea-d land having an opening through which said lamp will pass, substantially as described.

13. In .a battery hand lamp the combination of a metal case, a battery therein, a threaded metal collar detachably secured to the front end of said case, an insulating disc secured to said detachable collar, a threaded lamp socket secured in said disc, a lens and a reflector, and a metal head at the front edge of which said lens and reflector are mounted and by which they may be adjusted with respect to said lamp, said reflector having an opening through which said lamp will pass.`

14. In a battery hand lamp the combination of a metal case, a battery therein, a threaded metal collar detachably secured to the front end of said case by a bayonet joint, an insulated disc threaded to said detachable collar, a threaded lamp socket secured centrally in said disc, a lens and a reflector, and a flaring metal head at the front edge of which said lens and reflector are permanently mounted and by which they may be adjusted with respect to said lamp, said reflector having an opening through which saidl lamp will pass.

In testimony whereof I aflix my signature.

CHARLES F. BURGESS.