US1659013A - Spot lamp - Google Patents

Description

Feb; 14, 1928. 1,659,013

E. G. K. ANDERSON SPOT LAMP I Filed Oct. 25, 1924 2 Sheets-Sheet. i

,zw-fmwk Feb. 14, 1928. 1,659,013

E. G. K. ANDERSON SPOT LAMP Filed t. 25. 1924 2 Sheets-Sheet 2 N uniiimw Patented Feb. 14, 1928.

UNITED STATES PATENT OFFIQE-I:

Ermsre. AK. ANDERSON, or nvans'ron, I LINors, AssrG Noavro APPLETON ma ma COMLEANY, A CORPORATION or rumors.

sro'r LA P."

Application filed October 25, 1924; Serial 'no. 745,7eaf

This invention relates to improvements in spot lamps for automobiles, boats and for' other uses, and to improvements in a switch" for controlling the lamp clrcuit thereon. I

My improvements are shown as appl ed to a demountablelamp wherein the conductor cord which connects the lamp with a source of current is adapted to be wound on and unwound from a reel duringits"normal operation as a trouble lamp, and is contained on the reel when the lamp is adjusted to its normal fixed position, and wherein the lamp circuit control switch is associated with a manipulating handle for the lamp when the lamp is mounted on its support to swing the lamp in positions to therefrom. .v

A purpose of the invention is to provide a simple means by which'the reel for the cord can be readily placed in a structure which constitutes; part of'the lamp casingfia'nd direct the light rays which is so arranged that it may be readily applied to or disconnected from the lamp casing' The object of the invention is to produce a novel switch'mechanism for the lamp circuit which is constructed to adapt are the peculiar relation of the spring rewindin'g reel and the supporting and'enclosihgfcasingj for the lamp and to conveniently?associateit with the manipulating handle for umnmp:

In the drawings showing one embodiment of my 1I1V611t10n,

Figure 1 1s a part rear elevationandipart QTc nstitutes the bottom of the lamp cord circuit switch embodying my inventiom 7 As shown in the drawings 10 designates a. sheet metal rearwardly coiled. casing'whlch is open at its front endandfinwhich the rewinding mechanism and switch contained. which is attached at its forward flanged. edge between the flanged open endrof the casing,

within a rolled open ring 12, andthe edge of the usual crown lens 13. Aspur '14 (Figure 4) of the reflector holds said reflector from turning.

v the shell 25 and the section on the 11 designates an interior reflector from. rotation by being extendedinwardly through'an opening, in the center of "the reflector and swaged over the margin of said openmg; as at 23. The front wall 17 of the barrel is formed with a bearing boss 17' in which the sleeve 22 closelyifits. The outer turn of the spring is connected to the flange of thebarrel by means of a rivet 24: andthe barrel-turns about said sleeve.

2 5 designates a part cylindrical shell in" rear of the reflector which conforms gener ally to the rear surface of the reflector ll. It is formed at its rear end as an annular flange or tube 27 concentric to the axis of the 1 barrel, one part extending throughopenings in and clinched over theother part. A. spacer rn1g'28 is applied over theboss' 17 to hold the shell% away from frictional contact with the reflector shell. The t flange or tube reel; and the sides of said reel are formed by p 7 forward wallof the spring barrel;

, Contained within said sleet/e22 is the usualsoeket 30 toirecei ve the base 31 of the lamp; ordinarily connected thereto by the v I lrno'ivnj bayonet lock." A spring 32 is en Figures 5, 6 and 7 are details 'ofthe lamp p V p between'the base of thelamp and an insuclosed 'in the shell 30 and is compressible lating washer] 33fflxed .to and within the outer end of' the shell 30, 'asby turned-in flange or burr 33", shown'in Figure 2. In-v wardly beyond said shell 30fand' of larger diametenthan' the said latter shell, and closed I againstthe end of the shell, is a washer 36 made of insulating material,

38 designates a washer which is shown as made ;offcup, shape, and is fitted I over the forwa'rdlendoof a tubularinsulating body orv shaft 39, the latter extending backwardly through a short hollow lug 40 that is fixed to the rear end of the casing 10. Said lug is also removably connected and clamped to the body or shaft 39 by means oi a screw 41. ient manual means for manipulating the lamp to turn it on its universal joints.

Within the outer end of the hollow shalt 1-39 is a sleeve 42 which is ext-eriorly threaded for a portion of its length (Figures 5 and 6) for threaded engagement with the bore of said shaft. Said sleeve is formed at its outer end with an enlarged socketed portion 46, as shown in Figures 2, 5 and ti, lVithin said sleeve. 42 is mounted, for axial reciprocation, :1 pin 43.

Said latter pin is provided at its outer end with a head 44 that normally bears against the central contact of the lamp base to close the lamp circuit. A spring 45 disposed between said head 44 and the bottom of said socketed portion 46 of the sleeve 42 tends to hold the head 44 resiliently pressed against the center contact of the lamp base.

Said pin 43 is made anintegral part of a fin 47 which extends a distance inwardly beyond said sleeve 42 and said tin is torn'ied at its outer edge with double beveled surfaces 48 (Figures 5, 6 and 7). The said sleeve 42 is fixed to the insulating body or shaft 39 by the internal screw thread connection mentioned, but is unthreaded for rotational engagementin the cup or washer 38 and the insulating washers 33, 36, as shown in Figure 2. Said lint-breaded cylindric part of the sleeve 42 extends through and is in electric contact with a metal washer 49, between which and the washer 38 is clamped a conducting brush 50 that constitutes, with said washers 38, 49, the sleeve 42, the pin 43, and its head 44, part of thepath of current to the central contact of the lamp. Separation of said head from the lamp terminal base breaks this path, or opens the lamp circuit.

51 designates a switch actuating rodwhich is mounted for rotation, but non-axial, movement in the hollow insulating shaft or body 39.- T he outer end of said pin 51 is formed with fork arms 52 between which enters and slides the fin oi? the pin 47 (Figures 2 and T). The rod Si is threaded at itsvouter end 5:5[into a bushing 54 that is molded in a hollow plug 55 which is axially disposed with respect to the insulating body or shaft 35). A locking bolt 56, having a. slotted head 57, is also threaded into the. inner end or said bushing 54 to bear at its outer end against the inner end of the rod 51 and thereby to lock said rod endwise fixed in the shaft or hollow body 39.

The said sleeve 42 is provided at its inner end with diametrically disposed V-shaped notches into which fit the bevels 48 of the 47. \Vhen the bevels of said fin 47 0c- The hollow lug 4O constitutes conven-' cupy the deepest parts of the notches 60, the head 44 of the pin 43 is, by the spring extended beyond the enlarged end of said sleeve, as shown in Figure 6. At this time said spring 45 holds the head 44 pressed. against the lamp base terminal and closes the lamp circuit. Upon turning the rod 51, it acts, through the interlocking arms 52 and fin 47, to cause. the bevels at the end of the lin 47 to ride outwardly on the inthe said beveled edge of the fin will ride on the inner end face of the sleeve, whereby the parts will be looked in circuit-opening position. Preferably, shallower notches 64, angularly spaced from the notches ($0 on the end face of said sleeve 42, are provided in order to hold the parts to prevent accidental closing of the lamp circuit.

The wires included in the cord C, and embodying the wires 0, c are, respectively. grounded to the spring casing and connected to a lug G5, which is fixed to the back plate 20 of the spring barrel, the conductor 0 being connected to the sleeve 42 through the means of the conducting brush 50 that is fastened to said lug and is forked to embrace the nut-breaded part of said sleeve 42.

Referring now to the universal mounting for connecting the lamp structure to a fixed support, the same is made as follows:

70, designate the jaws of a bracket which are adapted to be'clamped over a support, as the wind shield frame of an automobile. Clamping pressure can be effected by abolt 71 which extends through the ears of said jaws. Located between said jaws and clamped thereon by the bolt 71 are two arms 75 of a sleeve 76. VVit-hin said sleeve is a pivot bolt 77. Said latter bolt extends through ears 78 of a fitting 7 9, which fitting terminates in asplit sleeve 80, whose axis is l at right angles to the axis of the pivot bolt 77. Extendinglaterally from and fastened in any suitable manner to the casing at its larger diameter is a hollow arm 82, the outer cylindrical end 83 of which extends into and l is fitted within said split sleeve 80. The split sleeve is riveted at 85 to a. metal ring clasp 86 that extends around the split sleeve 80 and terminates in a box-like enclosure 87, within. which nonrotativelv fits a nut 88 threaded to receive a thumb screw 89. Vhen said thumb screw is turned downwar dly through the nut 88, which latter is held non-rotatively by its engagement with the enclosure 87, the force ofthe nut acts ill) and. reacts on the split sleeve 80 and clasp 86 to close it against the cylindric extension 83 of the arm 82. This has the effect of locking the lamp structure from turning freely on the pivot, constituted by the parts 83 and 80, and will hold the lamp normally in position, while permitting it, by a moderate manual force to be turned ina vertical plane.

The conductor cable C leads from the reel and outwardly through the hollow arm 82, and thence downwardly through an opening in one of the arms of the fitting 79 to a source of current. Said cable may be knotted at C to prevent stress occasioned by pulling out the cable from being transmitted to the connections of the cable cords described. Said cable may also be protected exterior to the mounting by a flexible metal sheath 91.

By reference to Figure 2, it will be observed that the member '39 is connected, through the sleeve 42, the shoulder 46, washer 33 and internal spurs or flange 33' to the socket 30 so that thereby the lamp 31 r can be focused in the axis of the reflector 11 by endwise movement of said member 39; and can be locked in proper focal adjustment by the screw 41.

I claim as my invention:

y 1. In combination with a lamp structure embracing a sleeve to receive a lamp base, of a tubular body to the rear of said sleeve in axial alignment therewith, a guide sleeve fixed in said tubular body, a pin guided in said sleeve towards and from, and normally spring pressed toward,-the lamp base ter-s minal, anda pin actuating member rotatable in said body andinterlocked to and adapted of a tubular body to-the rear ofsaid sleeve i in axial alignment therewith, a guide sleeve fixed in said tubular body, a pin guided-m said sleeve towards and from, and normally springfpressed toward,-the lamp base ter- 7 minal, cam connection betweensaid pin and the outer end of sa d sleeve, and means to rotate said pm and cooperating with sard cam connection to" withdraw said pinfrom the lamp base terminal to open the lamp circuit.

ment of the pin, and an operating device for the pin mounted in said tubular body and interlocked with the pin so as to permit the pin to be rotated by the operating device while the pin is moving in the direction of its length.

In witness whereof I claim the foregoing as myinvention, I hereunto append my signature this 14th day of October, 1924. ERNST G. K. ANDERSON.

3. In combinationwith a lamp structure

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