US1451618A - Flash light - Google Patents

Description

Apr. 10, 1923 1,451,618 H M. KORETZKY FLASH LIGHT Filed June 2'7,

INVENTOR H/IRR v11, AokE TZ Y A TTORNEYS KTKQN/ Patented Apr. 10, 1923.

UNITED STATES ornca.

HARRY M. KORETZKY, or NEW YORK, N. Y.

FLASH LIGHT.

application filed June 27, 1921.

To all whom it may concern."

Be it known that I, HARRY M. KonE'rzKY, a citizen of the United States, and resident of the cityof New York, borough of Manhattan, county of New York, and State of New York, have invented a new and Improved Flash Light, of which the following is a full, clear, and exact description.

My invention relates to a flashlight and.

aims to provide certain new and useful improvements in connection with av device of this character.

In connection with flashlights it is a well appreciated fact that considerable difliculty has been experienced incident to the fact that if the flashlight were laid upon or adjacent to a. metallic object that irrespective of'the fact that the switch of the flashlight was open, a circuit w the battery would thus become exhausted.

A further diflijculty which has been experienced is that the end or contact portion of the bulb associated with the flashlight has often been injured due to the central elec- 2 trode of the uppermost cell within the flashlight, striking against this portion of the bulb.

Still another objection to present flash lights is that the cost of producing the same is relatively highincident to the fact that a number of details of construction have heretofore been regarded as essential, which details have constituted the major portionof the cost of manufacture.

With these objections in mind my present invention aims to provide a flashlight the primary object of which is a construction by means of which an operator may manipulate the parts to absolutely preclude any danger of a circuit becoming, accidentally closed, 1 sultin in the exhausting of the battery, so that t e operator. may pack the flashlight among metallic objects without feeling any fear upon this point. p

A further object of my invention is the provision of a flashlight which shallinclude means virtually precluding any danger of the stem of the bulb .becoming injured in{ cident to contacting with any portion of the uppermost cell within the flashlight.

Another object of this invention is that of constructing a flashlight including the advantages setforth in the preced ng paragraphs which shall also be constructed in 5 such a manner as to permit of its being man.

ould be completed and- Serial No. 480,597. I

ufactured for a far smaller amount that has been considered heretofore possible.

Still further objects of this invention will appear in the annexed specificationtaken in connect-ion with the drawings which latter present one practical embodiment of the same.

In the drawing is a. sectional side view taken through a flashlight embodying my improved construction. v 66 eferring now more particularly to the drawing it will be seen that the reference numeral 5 indicates the casing of the flashlight which in this instance is of any desirable insulating material, and has any suitable type 70 of switch 6 mounted upon its upper face, said switch being capable of bridging the gap existing between the strips? and 8 within the casing 5 and extending in the conventional manner to points adjacent the ends of the same.

Also in the conventional manner,the casing 5 has a reflector 9 associated with one of its ends, which reflector mounts a. bulb 10, electrical energy for the latter being fur- 3o nished by means of cells 12 positioned within the casing 5 and retained thereby by means of a cap 11.

Contrary to the conventional construction however, it will be noted that the cap 35 11in the embodiment illustrated is not provided with a spring commonly utilized for causing an intimate contact between the terminals of the cells, but that the cap 11 has its center dished or otherwise extending inwardly as at 13 to press into intimate engagement with the butt end of the innermost cell 12. Further a spring 14: is interposed between the inner face of the reflector 9 to which it is preferably secured, and the upper face of the outermost cell 12.

Spring 14 serves to normally separate the central electrode 15 of the outermost cell 12 fromthe stem of the bulb 10, so that even it the switch 6 should be closed or a metal object should be brought to extend between the capll and clamplng ring 16 of the reflector no circuit will be completed, thus avoiding a wastage of current. However if the operator desires to close. the circuit this may be accomplished by simply rotating the cap 11 to an extent suflicient to cause the outer end of the electrode 15 to press against the stem of the bulb 10 whereupon an operation o f -the: switch 6 will cause an actuation 110 of the bulb l0. Upon the opers or being through with the flashlight the same may be laid aside without any fear of the battery becoming accidentally exhausted, in that the operator may rotate the cap 11 along the screw threads 17 provided for this purpose and the spring 14 will then be free to press the electrode 15 of the outermost cell 12 clear of the stem of the bulb 10 so that an accidental completing of the circuit will be preeluded. I

Obviously numerous modifications of structure might readily be resorted to without in the least departin from the spirit of my invention, which I c aim as;

In a flashlight of the type including a combined battery case, light holder and handle, and of the type including a bulb in said holder and constituting said light at one end of the handle and a removable cap at the other end of the handle, and further of the type including a battery slidable in the handle between bulb and cap and an expanmake and break points one of which points is normally held open at an electrode of the battery by said spring, and a manually actuable switching device at the exterior of the handle and normally holding open the other of said points, there being provided coacting threads on said handle and cap for manual relative adjustment of handle and spring between bulb and batcap, all whereby said cap must be screwed up on the handle and also such switching device must be manually actuated in order to put the bulb in circuit with the battery.

' HARRY M. KORETZKY.

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