US1578512A - Focusing handlamp - Google Patents

Description

March 30 1926.

I. 1,578,512 J. s. GRAVELY FOcUsING HANDLAMP Filed Jan. '7, 1924 ATTORNEY Patented Mar. 3o, 1926.

JLIAN s. GRAVELY, 'onA WYTHEVILLE, VIRGINIA, Assreivon Vfroy WINCIIESTER'RE- PATENT oi-FicgEv PEATING ARMSCOMPANY, or NEW HAVEN, CONNECTICUT, A` CoRroItA'rIo'Ny 0F CONNECTICUT.

FocUsINe HANDLAMP.

Afpiicaan inea Januaiyv, `1924.. serial No. 684,700.

To aZZfwzom-may concern.' f

Be it known that I, JULIAN S. GRAVELY. a citizen of the United States, residing at lVytheville, in the county of lVythe, iState of Virginia, have invented certain new and useful Improvements in Focusing Handlainpsg' and I do hereby declare the fol lowingto be a full, clear, and exact def scription of the invention, such as will enable others skilled in the'art to which it appertains to make and use the same.

This invention relates to vbattery hand lamps of the type disclosed in the patent granted to A. L. Staples, February 13, 1923,

No. 1345245, wherein the character of the beam of light can be altered by varying the position of the lamp bulb with respect to the reflector.l t l .L

The principal object of this invention kis to provide a lamp support of simple construction, theprincipal feature being the provisionof a metal lamp' socket which can` be moved with respect to a reflector supported out of contact with the lamp socket. In vorder to make a hand lamp of this char.- acter, it has heretofore been considered necessary to provide'a special lamp socket constructed in such amanner thatthelamp bulb is `insulated from the refiec'tor which is lin contact with the lamp socket, and such that the necessary 'electric connections` for the lamp bulb are provided inthe lamp socket. It has therefore been considered necessary, as shown by the Staples patent above referred to, to provide'a lamp socket consisting of' insulating material, this r`socle et being constructed in such a manner that electric conductors can be brought'into contact with the central conductor of the lamp bulband with' the"outer conductor of the bulb. if

The present Ainvention provides improved means for supporting the lamp reflector out 1 of Contact with the lamp socket. A metal lama socket is used and a su ort for this l P socket is provided together with means whereby this support cari be; moved so as to alter the position ofthe lampfsocket with respect to the reflector.; A conductor is provided incontact with the lamp socket and insulated from the socket support, for connecting one `of the lamp terminals to the ordinary contact strip of the hand lamp. Means are provided for insulating this conductor from the lamp socket support; and

a central rivet is provided for fixing the several parts together, this rivet also serv-- ing as a means for connecting the central terminal of the lainpbulb with the carbonk electrode ofthe battery. An additional feature ofk this invention `comprisesmeans for .ireventinc the lama socket andthe con` to provide for economical manufacture and kassemblyrof `the several. parts, to provideA for ready access to the various parts of thev lhand lamp mechamsnnin case repairs are,

necessary, and to insure against short cir- `cuiting of the battery and linadvertent lighting of the damp.'` The various objects and advantages of this invention `will be apparent upon considering thel following detailed description which' is to be considered iii conjunctionwiththe accompanying draw``V ings, in fivhich, Y f

Fig. is a lsectional elevation of one embodiment of my invention.

Fig. 2 is a fragmentary section of aidif-l ferent embodiment showingtheV application of the invention,v to a hand lamp havinga metal casing insteadof a casing ofinsulat- Vinginateriahsuch as that shown in Fig. 1.

Fig is a transverse sectiontaken online S-Bcf F1021 showing the details of construction.

Fie. 4 is a detailedviewin sectionsliowing several parts of the improved hand lamp mechanism and illustrating the vmanner in which these parts are assembled.

Fig. is an elevation ofv the .improved v lamp socket support.

Fig. Gis an elevation of the improved conductor used for the kpurpose of connecting the hand lamp.

, Fig. 7 isl an elevation of aninsulating washer used for the purpose of insulating the conductor'sliownin Fig. 6 from the lamp socket support. i'

Fig.' 8 is an endfelevation of the improved ica d .y the Ilamp socket tothe conductingstrip of j 1, and forming a part thereof, isa flaringV insulating' material, such as fiber, in which: are locatedl a plurality of dry 'cells placed end to end kin a pasteboard carton 2, inconfo-rniity with usual practice; The-bottom of the lowei'niost dry cell rests on andmakesv electrical connection with a coil spring 3, carried bya met-al bottom cap Li, threaded to. a collar 5 on the casing 1. A. 'metalV strip @connects the collar 5 with the usual switch housing 7.

' The switch mechanism comprises a thumb actuated push button 31 'at one end of a yieldingv conductor fastened to and in electrical connection `with the housing 7 by rivet 32. By pressing. inwardon the push butto-n 3 1 electricalV connection can be established between the bottom electrode of the battery rand the outer terminal of the lamp, for in vthis manner the push button is brought into direct contact with the rear end ofthe Contact strip 17.v A sliding thumb piece 33 carries a linger '34 which, on inward pressure of the push button 31, will disengage from a slot in the yielding member supporting this button,l and can be pushed forward to hold the switch in position for lighting` the'lamp continuously.

At the opposite or front end ofthe. casing metal headv 8 fastened to the liber tube by rivets 9, and having its front portion threaded'to receive la lensretaining ring 10. A reflector 11, substantial-ly parabolicin outline,

has its outer edge gripped between the lens 12 and asupport 13,'formed by the converg' ing-'front end of the flaring inetalY head 8.

r1`helens 12inay be plain, as shown, or it may be curved.' reinforcing vring 14 is provided between the annular support 13 for the reflector, and the, retaining ring 10.

This reinforcing ring may be in the'V form of a piece of' wire bentv to forni a loop, and ,insorted in a suitable annular recessforined in ythe retaining ring 10. This reinforcing ring,

when arranged in this manner, is permanently associa-ted with the retaining ring so Y' that when the retaining ring is unscrewed the reinforcing ring remains in position inv its annular groove or seat. rl`lie reflector. 11 is firmly held against the support 13 by the retaining ring 10, which clamps thel lens 12 againstthe rim of the reflector and forces this rim vintoffirm Contact with the annular support 13.r The ring 14e forms al substantial support orrieinforcing vmeans for thev outervendl '13 of the flaring inetalhead.

rThe incandescentvlamp bulb 15 is threaded into a metal lamp socket 16 which` is electrically connected to the usual conduct-ing strip 17`of the hand-V l'a'inp byme'ansof a hand `lamp is provided. with Vscrew .threadsv at the. inner end thereof,` and a threaded iing23 having an annular passage therein,

isgadapted to. be screwed onto this, threaded portion 22.011? the yhead ofthe hand lamp casfing. The projecting legs of the, lamp-:socket support 'extend into the annular' passage withinV t-liering 23, so that when this ring. is turned the. support 21 is caused to move for-V ward or backward, dependingupon the direction of rotation ofthe ring 23 with re.-k

spect to the handI lamp casing. The ends of the legs of the support 21 are offset as shown in Fig. 1 at 30,.so that the body portion of this support is disposednearer the .battery than the portions which cno'age the adjusting ring 23.'v

the base of the metal lampI socket 16 for the purpose of insulating the socket `frointhe central rivet 19. The conductor 18 encircles the rivet 19l butris insulated therefrom by a small insulatingwasher The support 21 is provided with ay central opening into which is fitted a piece of insulating material 26. rlhis piece of insulating material is in the form of a. washer. encircling therivet 19. j

An insulating wash c1427 is provided for the 'iates the met-alv washer'28 from the support 2,1.

The several parts described in thepreceding paragraph can be assembled in the manner illustrated in Fig. 4. The insulating washer 2#1 can be inserted in the lamp socket until it restson the bottom thereof, and then the parts iiuiiibeied 25, 18, 27, 21, 26, 29 and 28 can be appliedr to the bottom of the lamp socket vin the order named. The rivet 19 is then inserted from Vthe inside ofv the lamp socket, and the projecting'endof this rivet spun over, as shownin Fig. 1, to clamp the several parts together. l

1A satisfactory hand lamp einbodyingthis A metal rivetc19 passesv -which project through the casing 1 ofthe f yin vinsulating washer 24 is provided in Y purpose of insulating the cond-uctor 18 from; the support 21. This conductor 18 isV thusv fil) employ certain additional `fea-tures which VVadd to the value of this device.. For example, i prefer to provide means for preventingI the insulating washer 26 from ro-l tating with respect to the support 21', when 'a bulb is screwed intothe'socket 1 6.r In order to Vaccoinpiishv this result, the opening'v provided in the support 21 can be made irregular. The general shape of this opening may be irregular, or the edge of the opening may be corrugated as shown in Fig. 5. Y

I also prefer to provide means for preventing the lamp socket' and also the conductor 18 from rotating with respect to the *insu* lating washer 26 and the support 21, when a lamp bulb is screwed into the socket. A simple and eiiective means for accomplishing this result consists of a lug ,85, struck from the base or the inetallamp socket 16 y and adapted to enter ay depression indicated at 36 in the washer 26. The conductor 18 is provided with a keyway shown at 37 in Fig. 6, which also receives the lug YIn this mannerboth 'the lamp socket and the conductor 1S are permanently locked to the washer which is, in turn, fixed' to the support 21 by virtue or the corrugationsthereon. It isthusirnpossible for the socket 16 or anyo'f the parts associated therewith to rotate Iwhen a lamp bulb is screwed into the socket, even though the central Vrivet 19 is loose.

" In 2-I'have illustrated aliand lamp having a metal casing 1. yllhelpresent 'invention can be used lwith a hand .lam-p ol" this type exactly as well as with ahand lamp having a casing consisting-ot insulating material. Vhere a. metalcasingfisused, it .is

merely necessary to insulate thev conduct-k ing strip 17 from the/casing. 'This can be done by providing a sheath 38 of insulatingmaterial. The sheath and lthe conducting strip can be fixed to the metal casing by means of metal rivets 39,'which passthrough both the sheath and the conducting strip. iii/Then this construction is employed, the holes in the conducting strip should be substantially larger than those in the insulating sheath` so that when the rivets are iixed in place the insulating sheath will separate thei'ivets and the conducting strip in the manner shown in Fig'. 2. `The other parts or' the switch mechanism ot Fig. 2 areexactly the sameas those illustrated in Fig. 1, and the same reference characters are applied to like parts in these two igures.

It will be noted from the above description that this invention includes aV hand lamp having a met-al socket which can be" adjusted with respect Ito thek reflector to change the character of the beam ofvlight. This metal socket which is of simple construction is supported in a.V convenient manner by parts that can be easily manufactured and readily assembled. An important feature. of the invention consists of the construction of the means for supporting the reflector, whereby y this rei'iector is supported out of contact withthe' lamp soxket. Since there is no actual contact between theseparts, it is notfneces- 'sary to provide eithera 'socket'inadeof insu! lating inaterial,' or insulation arranged between a metal sockety andy the reflector.

lVhile l have described vcerta-in speciiic vmeans for accomplishing certain purposes re- 'n lating to hand lamp mechanisms, itis to be i understood that other vmeans may be ein` ployed without depaiting'- from thek principle or the invention. Various changesv in the details or' construction can be made and .various parts can be omitted witho'rd; de-

parting from the scope or the invention as 'defined in the appended claims.

I claim: i I

1. In a. hand lamp, the combination of-a meta-l lamp socket, a reiiector, means for supporting said reflector at its outer edge and means for supporting the lamp socket l'iaving portions extending through the hand lamp casing whereby therposition of saidv socket with respect to said r-efiector can be changed, the said iedector being entirely out otcontacty with the lamp socket and the lamp socket support. y 'i In a hand lamp,-the combina-tion of a metal lamp socket, areflector,means for supporting `said reflector atits outer edge, n

ajmetal spider supportkfcr said lamp socket, means for insulating. said socket from said socket support and means whereby thev posi- Vtion o said socket with respect to said relectoivl can be changed, the said refiectoi" be.- ing entirely out or Contact with `thelainp vsocket and the lamp socket'support.

8. `)in a hand lamp, thecombination of a metal lamp socket, a reiector, al support for said-socket, means for insulating said socketV Vfrom said support, means carried byssaid socket for preventing-said socket roinrotat? ing with respect to said` support, andnieans extending thru the hand lamp casing tor i* moving said support to change the position of saidY socket with' respect to said rctiector.

si. l'n a hand lamp, the con'ibination of a' metal lamp socket,- alreiiector, 'a support for v'said socket, means 'for insulating said socket Atrom said support, means carried by said i interposed between sait sulating said. socket/from'said sup-port, a conductor in Contact with said socket, means for insulating said conductor fromsaid support, means for moving said support to change the position of'said socket Wit-h respect. to saidfreflector, and means for preventing said socket and said conductor from rotating with respect to said support.

T. In' a'hand lamp, the combination of a metal lamp socket,a reflector, a support for n several parts together, the said rivet being said socket, apiece of insulating material socket and said support, means for preventing said socket fro-n1 rotating with respect to said insulation, separate means vfor preventing said piece of insulation Vfrom rotating` With respect to said support, and means for mov# Iing saidgsuppo-rt to change the position of said socket with respect tov said reflector.

8'. Iny a. hand lamp, the combination of a metal lam-p socket having a lug projectingvport andthe retalning ring.

from the hase thereof, ahsupliiort for sait socket having a central opening, a piece of insulation fixed in saidiopening and having a depression adapted to receive the lug on said socket, a conductor in Contact with said socket, and having a keyway adapted t-o-rey ceive the lug on said socket, insulation in-4 terposed `between said conductor :and said support, and means Yfor fixing theseveral parts together. Y

9.' In a hand lamp, the combination of a metal lamp socket, a support having a central opening, an insulating Washer inthe vhasey of said Socket, an insulating Washer fixed in the opening in said support, a. conductor in Contact with ,sa-id sooket.,v1neansV for insulating said conductor from said Sup,- port, and a rivet for fixing the several parts together, the said rivet being insulated from said conductor and saidA support,

i0.. In a hand lamp, the combination of a metal lamp socket,y a supporthaving a central opening with a. corrugated edge, an insulating Washer fixed in the opening in said support, a conductor infcontact With said socket, n'ieans forinsulat-ing said conductor from saidA support, a rivet for fixing the insulated from said conductor ,and said support, and meanscarriediby said socket for preventing` rotation thereof and ofvsaid conductor with respect to the insulatingl Washer fixed to said support. a

ll. in a hand lamp, the combination ofy a,k reflector, 'a' lens, a. retaining ring' for clamping said lens against said reflect-or, a support for said. reflector, and a reinforcing` ring disposedbetween the edge of said sup- 12. in; a hand lamp, the combination of aY retlectomalens, a retaining ring for clamping said lens against said reflector, a support for said reflector, and a reinforcing ring carried by said retaining ring and,"

adaptedto reinforce the edge-'of said support.

,In testimony whereof I aihX. my signature.

tannins GRavnLY--

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