US1173984A - Portable electric lamp. - Google Patents

Description

F. M. RUSENFELD.

PORTABLE ELECTRIC LAMP. APPLICATION FILED MAR. 5, 1915.

luented Feb. 29, 1916.

3 nvewtoz A Francis M. Rosenfelcb TE ses NT OFFIC.

mmucxs M. iosnurnnn, on NEW YORK, .N. Y., ASSIGNOR 'io IMPORT SALES COMPANY,

/ A comeomxon on NEW YORK. A

PORTABLE ELECTRIC Lam.

Application filed Match 5, 1915. Sei*ial No. 12,406.

Be it known t'lmt l. -Fnnx ns M. ROSES- FEU), a citizen of the United States, residing in the city, county, and State of New York, have invented certain ncw and useful 11nprovenwnts in Portable Electric Lamps, of which the following is a description.

My invention .relates to electric Ian1ps of the well-known portable 01 pocket type, which are opemted by means of a dry battery contained in a casing which may be partly or Wholly metallic, and which. casing ca1ries, at so1nc convenient point, a suitahle .switching mechanism foi" olosing, the lamp circuit.

One of the principal objects of my invention 1s to provide means whereby one pole 01 the battery shall be completely insulated from the metallic portions of the casing, so that the battery caiinot be short-circuited or 'conncction 1nade through the lamp accidentally as, for instance, by contact et the casing, switch or portions thercof with a 1netallic body.

Fnrther objecte of my invention are to simpli1y the construction of the apparatus, thus making it cheap, easy to manufacture, and less liable to dcrangement, and to provide an efficient, simple means of completing the circuit through the lamp.

Other objects of my invention will be ;.pointed out in this specification andin the claims.

In the drawings accompanying this speci-' fication,I have shown in Figure 1 asi de view 'of a lamp haing a nietallic casing and emgbodymg 1ny 1mp1:ovements.

In Fig. 2 I

have shown a sectional view of the lamp shown in Fig. 1. In Fig. 3 I have shoWn my improvements applied to a. lamp, the cas ing of which is partly metallic and partly insulated. F ig. 4: shows a detail plan view of the spring- Which contacts with one of -the'battery poles, and in Fig. 5 I have shown a perspective view of one of the contact members to wliich the sp1ing shown in Fig. 4 is connected.

Reforring to the dmwings, 1 indicates a battcry, one pole of Which,.2, is connected to a pole 3 of the lamp 4:. The othep pole of the lump is connected to a m'ctallic reflector G. or otherwise electrically connected eithef to the metalli'c casing 7, if the casing is wh'olly mctallic as in Fig. 2, or to n metallic strip 8 if the casing is partly of insu- Speeificacion of Letters Patent.

Patented Feb. 29, 191e.

lating material. the connectmn 1s madeto onehlement of the sw1tch 9. Y

4 111e detaxls of the spec1fic smtch mechamsm 1llustrated 111 F 1g. 8 are fullv shown and descmbed 111 mv Patent No. 1.151.130. bept. 21, 1915, 101: c1rcu1t-closing douces, t0 wlncl reterence 1s made for a fuller de.- scmptmn.

The other pole 'of the battery 1, which in ber 11 and is preferably formed With a beV-' eled edge for a purpose which Will be herc- 1naf'te1: descnbed Hember 11 has formed upon 1t a plurality' of upturned cars 16,

Which are perforated to enable the spring to be passed therethrough, as shown in Fig. 4, thus holding the insulating disk 15 in place during assembling.

It Will thus be .seen that While pole 2 *of the battery is connected to metallic portions of the casing, the other pole of the battery is entirely insnlated therefrom, so that it is impossible to-short-circuit the battery or close the lamp circuit without operating the switch.

The casing 0f battery 1 is, as is usual, in sulated from the lamp casing by means of an insula.ting covering 17, and, if desired for additional security, a second insulating covering 18 (Fig. 3) may be used.

In the modification shown in Fig. 2, the switch 9 operates in a slot 19 formed in the battery casing, so that it may be longitudinally slid thereon: Connected to the switch 9 is an extension 20, Which is ths electrically connected to the metallic casing 7, and, through it, to the battery pole 2. \Vhen switch 9 is slid longitudinally toward the rear of the lump, extension 20 will ride up the bevel of insulating disk 15 and make contact with the edge of metallic member 11. If desired, the metallic member 11 may be so proportioned and the extension 20 s0 In either event, however,,

formed that movement of the extension 20 to the limit of its movement Will cause the end of extension 20 to enter 1n the space betWeen the edge of metallic member 11 and.

is provided. In this case a movement of the switch 9 in a forward direction will cause connection to be made between the two poles of the battery through the lamp 4.

In either modification, however, accidental short-circuitin, of the battcry or closingof the lump ciucuit is prevented by the provision of the means described for completely insulating One of thc battery poles from the metallic portions 0f the cas- 1ng.

hile I have only shown une form of my invention, I do not intend to limit myself thereto, as it will be evidcnt tu those skilled in the art that many modifications may be made without departing from the spirit of my invention.

What I claim is:

' 1. In a device of the character described,

a metallic casing, a battery Inonnted there .111, a lamp mounted at one end of the casmg and electrically connccted thereto and to one polo of the battcry, a cap detachablymounted at theother end of the casing, a disk secured to and insulated irom said cap and clectricall cohnectcd to the other polo of the battery when the cap is in position, and a condnctor slidably xnounted within the cusillg and elcctricall connected therewith and adapted When operated to contact with said disk to complete the circuit through the lamp; r

2. In a devi of the character described, a metallio casing, a battery mounted there in, a lamp mounted at one end of the casing and electrically connected thereto and to one ple of the battery, a cap detachably mountcd at the other end'of the casing, a disk secured to and insulated from said cap, a:spring Connectedto said disk and adapted to form an electric connection betwen said disk and the other pole of the battery when the cap is in position, and a conductor slidably mounted Within the casing and electrically connected therewith and adapted when operated to contact with said disk to complete the circuit through the lump.

3. In a device of the character dscribed, a metallic casing, a battery mounted therein, a lamp mounted at one and of the casing and electrically connected thereto and to connected therewith and adapted when op-' erated to contact with said clament to complete the circuit through the lamp.

4. In a device of the character described,.

a metallic casing, a battery mouncdctherein, a lamp mounted at one end of the casing and electrically connected thereto and to One polo of the battery, a cap detachably mounted at the other end of the casing, a con ducting element carried by said cap, an insulator interposed between said element and said cap, a spring held in position by said clament and electrically 'connected thereto and adapted to form an electrical connection between said element and the other pole of the battery whcn the cap is in position, and a Conductor slidably 'mounted within the casing and electrically connected there with and adapted when 0perated to contact with said element to complete the circuit through the lamp.

In testimony whereof I have signed this specification in the presence of tWo subscribing witnesses.

FRANCIS M. ROSENFELD.

VVitnesses:

ANNA MARIE I/VALL, M; M. RII\IAW.

Images