US1895913A - Vest pocket type flash light - Google Patents

Description

Jan. 31, 1933. I M. E. BucHHoLZ 1,895,913

VEST POCKET TYPE FLASH LIGHT Original Filed March 9, 1929 Fig.5

magma 9 BY ATTORNEY.

' mx E. Bessemer),

Patented Jan. 31, 1933 UNITED STATES PATENT, OFFICE 1? 3030mm, NEW JERSEY, assronoa r'o rn'n BRIGHT s'rar.

nar'rnay conrsmz', or. nonoxm New JERSEY, A conrona'rron or NEW YORK vns'rfrooxn'r 'rvrn rna'sn mm Application filed March 9, 1929, Serial No. 345,752." Renewed July 20, 1938.

,This invention relates to flashlights of the vest pocket type and provides improvements therein. I

The invention provides a flashlight of the type referred to utilizing to the fullest extent the interior space for receiving the cells or battery used for supplying current, whereby to furnish a flashlight of relatively small diameter of maximum capacity.

The invention further provides an im-. proved switch construction, whereby sus-' tained or momentary light can readily be obtained at will, and whereby accidental closing of the circuit and consequent wastage of the battery is avoided.

Other features of improvement will be hereinafter pointed out in connection with the description which follows.

Several embodiments of the invention are illustrated in the accompanying drawing, wherein,

Figure 1 is a view in side elevation (with parts shown in section) of one embodiment.

Fig. 2 is a similar view of a second embodiment..

Fig. 3 is a similar view of a third embodiment. Fig. 4 is a detail view of a part shown in Fig. 3.

Fig. 5 is a longitudinal sectional view illustrating still another embodiment.

Referring to said drawing, numeral 10 designates a casing,

about the length of a fountain pen, and pref erably of a diameter approximating that of a large-barrel fountain pen. A socket 12 is provided at one end 11 of the casing for receiving a miniature incandescent lamp 14; 1 and 2, the socket mem-' member 12 is connected to the casing by suitable means, as for example a bayonet joint fraction of .an inch conveniently formed of a- 10, in such manner as tube of thin sheet metal, and preferably madethe lamp, thus;

the glass bulb of the incandescent lamp. The detachable form of socket as usual.

i As shown in Fig. 1, the. end portion 11 of the casing may be made as an integral art thereof, of slightly reduced diameter. e part 11 may also be. formed as a separate part, preferably having a screw-thread engagement with the main body of the casing 10, as indicated at 24, the screw threads bein "of suflicient number and pitch to permit 0 movement ofthe part 11 through a small without danger of disengagement or weakening the connection, for a purpose shortly to be described.

a As shown in Fig. 1, the end 25 of the casing maybe provided -with a cap 26, having a screw-thread connection therewith, as indicated at 28, the number of threads and the pitchjbeing such as to permit of a movement of thecap on the casing of asmall fraction of an inch without weakening the connection. I 1

A spring 30 is provided within the casing to bear upon the upper face of one of the cells w, and normally press it away from the lampcontact 22, the spring 30 preferably being a spiral spring surroundingthe lamp and'bearing againstthe socket member 12 at one end, and against the upper face of the cell mat the other end as already described. Normally the spring 30 presses the cell or cells lengthwise of'the easing into a position where the middle contact :1)- of the cell is out of contact with the contact 22 of breaking circuit. To complete the circuit, contacts :22 and 22 are brought together against the tension of the spring 30. In the construction shown in Fig. 1, this is effected by turning the cap 26,

whichthrough the screw threads pushes the cells bodily into contact with the contact 22' of the lamp. The screw-threaded cap 26 provides a means for making a permanent (or sustained) contact between the lamp and the cells, the cap being provided with an inward pro ection 32 hearing on the uncovered botmomentary contact between the cell contact m and lamp contact 22. Thismeans conveniently comprises a push-button 37 which is preferably completely housed in a recessed portion 39 formed in the end 25 of the casing, as shown in Fig. 2, or in a recessed portion 40 in cap 26, end 25 of the casing, as shown in Fig. 5. The recessed portion 39 (or 40) is preferably rovided with an in-turned flange 42, and t e push button vided with out-turned flanges 44, 45 on either side of flange 42, whereby said push-button 37 is retained in said recess. spring 47 may be provided for pressing back said push button 37 after being pushed in, but'the spring 47 may be readily omitted and spring 30 relied on for button. The

metal, and ma zinc bottom of pressing back said pushush-button is preferably of es contact with the uncovered a cell, and also with the metalliccasing 10, or casing IOand metallic the socket-member 11 cap 26, thereby providing a. grounded connection between the lamp socket 12 and the zinc pole of the battery or cell.

inside diameter of flange at the inner end being a where a cap is used to close 37 is preferably pro-f sleeve of substantially less diameter than the said casing, and a push button within said sleeve adapted to make contact with the bottom of said cell, said ush-button being an inverted cup having at both ends outwardly extendin flanges, the apted to bear against the inner end of' said sleeve and the one at'the outerend adapted to slide against the inner'side of said sleeve,said sleevea-lso. having an inwardly extending flange at-its inner end, and further comprising a spring adapted --to bear against said flange on the inner end of said sleeve and said the outer end of said-button.

In witness whereof, I have hereunto signed my name. 7

' MAX E. BUCHHOLZ;

flange on The lamp recess 16 may be providedwith a glass-covered cap 50, as shown in Figs. 3 and 4, which may be connected to the end 11 of the casing, as'by means of a bayonet-joint connection 52; As shown in Fig. 3, the end ll'may be formed as an extension 30, and may be formed asan integral part thereof, as shown.

For confining the flashlight in a vest-pocket, a spring clip 60 may be provided on the side of the casing 10, in similar manner to the spring clip on a fountain pen.

WVhat is claimed is:-

In a vest pocket flash-light of the type comprising a long tubular casing of relatively small diameter, a lamp-socket at one end adapted to. hold a lamp in such position that the center terminalof the lamp is in line with th carbon terminal of a cell within the casing, and a spring in the top of the casing adapted to normally press the aforesaid term lninals of the lamp and cell away from one another; means, at the end of the casing op site the socket. for pushing on the bottom of a cell against the force of cell tcrn'iinals, said means comprising a basepiece having an inwardly projecting tubular 7 said spring to make contact between the aforesaid lamp and ioo

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