US1353348A - Portable hand-lamp - Google Patents

Description

R H. M. KORETZKY. PORTABLE HAND LAMP.

APPLICATION FILED JUNE 18, I919.

Patented Sept. 21, 1920.

)21 4/ q 0 WI/Z Z INVENTOR 7 BY Ana??? oairsn PORTABLE HAND-LAMP.

To all whom it may concern:

' Be-it known that I, HARRY M. KORETZKY, a citizen of the United States,- residing at Brooklyn, in the county of Kings, State of New York, have invented certain new and useful Improvements in Portable Hand- Lamps; and I do herebydeclare the following to be a full, clear, andexact description of the invention, such as will enable Others skilled in the art to which make and use the same.

My present invention relates to improvements in portable electric lights of the kind in which the current is supplied'by a battery of cells within a casing which forms the I handle.

One object of the invention is to provide a simple, effective and easilyand cheaply constructed combination'of reflector and lamp socket, so made as effectually to prevent all possibility of electric connection becloser for devices of this character which can I be locked on open circuit by a slmple slight tween the-reflector and battery, thus avoiding all danger of external accidental short circuits. Another object of the invention is to provide a simple and inexpensive c1rcu1t movement, thus avoiding all danger of accidentally lighting the lamp by means of the switch, either in the pocket, work-box or in shipping. j 1

The invention is illustrated in a-preferred embodiment in the accompanying drawings,

wherein Figure 1 is a longitudinal section of the device showing the battery in side elevation, Fig. 2 is a plan view of the circuit closing switch, and Fig. 3 is a sectional view of the insulating socket support with the parts separated for clearness. v

In the form of my invention herein illus trated, the casing is composed of a metal cylinder 10 open at both ends. Upon the rear end a metallic closing cap 11 is screwed, and this is provided with a spring 12 adapted to press upon the zinc extremity of the battery and at the same time to press the same upward to maintain a firm connection at the upper or carbon terminal of the battery hereinafter described. The battery of the usual well known construction, and covered as usual with a cardboard or other insulating envelop, is shown at 13. p

A front cap 14 screws onto the upper end of the cylinder 10, and this carries the lens 15 and the reflector 16, both secured by the threaded ring 17. The lamp 18 is carried it appertains to threaded end of the lamp l8.

The neck of the reflector, whichsurrounds the lamp 18, but is separated slightly there from, fits tightly over a thin metal cylindrical support 22having a diameter somewhat greater than the threaded socket neck 21, and provided with a'surrounding plane annular flange 23, whose outer diameter is materially less than the inner diameter of the upturned annular flange 2O (see Fig. 3).

A thin insulating lower washer 24 is placed upon the upper surface 'of the plate 19, ]11Sl3 filling the space between the socket" neck 21 and the flange 20. The support for the reflector is then laid with its flat portion 23 against the upper surface of the washer 24,- and over this is pressed the upper insulating washer 25. This washer has the.

same outer diameter as the lower washer 24,

but the central hole therein just fits around the cylinder 22 of the reflector support.

This upper washer therefore acts to center the reflector support, so that it manently out of contact with the lamp socket 19, 20, 21.

The parts having been thus assembled, the neck of-the reflector is fitted over the cylinis kept perevery part of ()FFICE.

HARR MQKoaErzKY, or B ROOKIiYN, NEW YORK.

Specificationof Letters Patent. Patented Sept. 21, 1920. Application ifiled' June 18, 1919. Serial No. 304,990. I

der 22 and against the upper washer 25, when a single blow from a suitable die is suflicient to spin the edge of the cylinder 22 outward and against the reflector in a manner to form a permanent connection between the reflector and the lamp socket.

As shown in Fig. 1, when the lamp is. screwed into the socket thus secured, its cen-.

tral terminal makes the usual connection with the carbon terminal 26 of the battery; and this connection is made firm, by the pressure of the spring 12, as already stated. The external lamp terminal, being screwed into the socket-neck 21, is electrically connected with the outer flange 20 which comes into appropriate electrical relation to the circuit closing switch when the cap 14 is screwed into place in the following manner.

Inside of the casing 10 is a metallic strip 27, insulated from the casing by the strip 28, and connected physically and electrically with the metal strip 29 within the switch casing 30, by metal rivets 31, also insulated from the casing 10. The upperend of the strip 27 is curved to fornra spring terminal against which the flange ot the. lamp socketmormally bears when the capfl l is in place.

ario-us forms of switch might be used 7 with the, devicethus far described. -My

preferred switch is shown in Figs. 1 and 2.

g In this switch the casing30 has a round opening 32 near one end with which communicates a straight and somewhat nar- V rower slot 33. Acontact spring 34 is riveted between thespring 34 and therivet 31, the lamp will be lighted by current-passing as,

followsfrom. the zinc end of the battery by spring 12, cap ll, casing 10, switch casing.;30,. spring 34, rivet 31, strip 27, socket 2O, 19, 21, outerlamp terminal, through the lamp to its central terminal and thus to thecarbonend of the. battery.

The button 35. isnormally kept in. its" outer position, shown: in dotted lines in- Fig.

1, by pressure-of the spring; 34. As shown in Fig gl the-button. 35 has a narrow neck, which isadaptedto enter the slot 33, per-m mitting thebutton to be slipped back to the. full line positionin Fig, 2. VVhenso treated, the button will exert a wedgi-ng action upon the spring. 34, causing it to bepressed inward until contact-is made and the lamp is lighted. This position is employedwhen it isdesired to prolong the lighting without keeping the finger on the button. On theother hand, if the button is slipped back into the slot 33 only a very-'short'distance, the spring 34 will not be wedged into contact, but the button will be locked in open circuit position, since the head is too large to pass into the slot. Accidentalfexternal pressure will therefore'not cause the lamp to? be lighted. The same-result is socured. by sliding the button forward until the upper edge of theopeningBQenterS the neckiot the button. These two safety or locked positions are shown in dotted lines inlfii'g. a

Variouschanges may be made in the device as shown withoutdeparting from the scopeotmy inventiomand-I do not limit myself, to the exact detailsherein shown and described.

\Vhatlclaim is- 1. p

In apparatus of' the class described, a lamp socket having a central screw-threaded socket neckand an external upturned flange,

a reflector-support comprising a flat pontion and a; cylindrical portion surrounding but out'of contact with the socket neck, a fiat: washer under said reflector-support, a

second washer over the fi atportion oi the reflectorssupport and adapted to center the neclnthereof.within the flange around the lamp socket, and a. reflector attached to the i neck :of the refiectorssupport.

In testimony whereof, I afiiX, my signature; 7 HARRY M. 'KORETZKYg In presence of i CHAs. T. LU ER.

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