US1804863A - Lamp support - Google Patents

Description

W. A. DUNLAP May 12, 1931.

LAMP SUPPORT Filed June 19, 1929 INVENTOR Patented May 12, 1931 UNITED STATES PATENT: OFFICE Application filed June 19,

My invention refers to improvements in lighting mechanism, and particularly to reflectors and supporting construction incorporated therewith for an electric lamp,

I constructed and adapted, to operate in the manner more fully hereinafter described,

In the use of electric lighting for interior areas as in shops, store houses, etc., where the lamp is'suspended from above,'it is de- I sirable to so distribute the light downwardly and over a lower area to the best advantage as to illumination and economy.

In my invention I provide means for supporting the lamp within the centralinterior portion of a reflector by means facilitating and simplifying the construction and supporting connection between the main reflector shell and a conductor conduit, with means incorporated therewith for closing the in terior neck portion of the reflector for inclusion of the socket, closure of the upper space Y for conservation of light rays, inside or interior protection of the socket mechanism of the lamp, for facilitating positive attachment and location of the lamp itself, and in general a construction facilitating and simplifying manufacture and assembly of the entire reflector construction. v

In the drawings illustrating one embodiment of the invention:

Fig. 1 is a viewin elevation, ona small scale, showing the exterior of the reflector;

Fig. 2 is an enlarged sectional View of the operative mechanism;

Fig. 3 is a transverse sectional view on the line III-III of Fig. 2; I

Fig. 4 is a sectional detail view showing a modified construction.

Referring to the drawings, 2 is the main reflector of suitable size andform, annular preferred in shape in the form of an inverted bowl or shell having a terminaledge 3. Casing 2 is provided with a central upwardly extending preferably tapered neck 4, joined with the main bell-shaped body 2 by an intervening section 5, having a concave interior, similar to that of the main shell 2.

Neck 4 extends upwardly and is turned inwardly at its terminal end, as at 5a, providing for snug engagement underneath the proparts are so proportioned that the focal center'of lamp 11 will be located, when inserted, at the best position for distribution of the light rays downwardly and laterally underneath the rim edge 3, as indicated.

For the purpose of cuttin off the upper interior of neck 4 from distri ution upwardly of light rays, and also for completely enclosing the socket-containing interior space, I provide a disk 12 adapted to be seated upwardly with-in the interior of the reflector at its middle portion, and, as shown, against the intermediate ring portion 5 thereof. Disk 12 for such purpose is dished, providing a concave interior so that, when inserted, it provides in effect a continuous extension inwardly of the main interior reflecting surface, clear" into the upper reduced neck portion of the lamp 11.

The disk 12 is provided with a middle clearance, 0pening'13 for adjacent surrounding relation to the lamp, the inner edges of the opening being comparatively close to the lamp neck when inserted. Bvsuch means I .3 effect a substantially close light-sealing relationship between disk 12 and the lamp, so as to efiectually prevent distribution of any rays upwardly.

For the purpose of supporting disk 12 in position, I provide a pair of supporting arms 14, turned inwardly at the upper end, as at 15, for tight connection between the upper end of socket 10 and of covering and. clamping ring 7, when clamped ti htl by the socket supporting screws 26. he owerends of arms 14 are similarly. turned inwardly providing an attaching flange 16, for connection by screw 17 with the reflecting disk 12.

For the purpose of easy attachment, the disk is provided with slotted openings 18' having enlarged screw head openings 19, so that the screws ma be partly inserted by their threads into fl anges 16, and the disk may be then placed in position and rotated in the manner of a bayonet joint, whereupon the screws may be tightened, eflectuall connecting the parts and closing the peripheral portion of the disk upwardly against its outer annular hearing, as the intermediate rounded portion 5 of the main shell.

I show in Fig. i a modified construction of disk 12a in which form it is made flat, extending across the area straight from one opposite side to the other. 1n such case it is connected with the lower outwardly turned flange 16a of arm 14 by similar screw attachment 17a. A supplemental prong 20 extends downwardly from flange 16a through a reg istering opening 21 of the disk. at each side, so that the disk 12 may be easily and quickly located in position, for insertion of the screws in reglstering relation with the threaded screwholes through each opposite flange. Such construction is otherwise enerally the same as that above described, t e disk completely and effectually closing the upper interior, and providing a continuous inner reflecting wall within the reflectin shell.

If desired, the disk 12 may be flrst connected withthe inner surface of the main shell by any suitable means, as spot welding or otherwise, before connecting it with the supporting arms 14, in manufacturing the reflector.

It will be understood that theinterior surfaces of shell 2 and of the disk may be treated suitable manner for best reflection of the or the like.

Also, that the device as a whole ma be made in variously difl'erent proportions or.

changed in detail construction by theskilled mechanic, but that all such changes are to.

be understood as within the scope of the following claims.

What I claim is:

1. A reflector as described having an. up:- per hollow neck and an outwardly extended annular reflecting body with an annular concaved portion flaring from the base of the neck into the main body, a lamp socket in the neck, and a concave closing wall held upwardly against the concaved portion at the base of the neck opening for a lamp.

2. A reflector as described havingan upper hollow neck and an outwardly extended annular reflecting body with an annular concaved portion flarin from the base 'ofthe neck into the main body, a lamp socket: in the neck, an upper cap, a supporting pipe conduit connected with the cap, a concave closing centrally apertured wall engaging the concaved portion of and covering and supporting the reflector and its neck, and means holding it in. position.

3. A. reflector as described having an upper hollow neck and an outwardly extended annular reflecting body, a lamp socket the provided with a clearance .per hollow neck and an outwardly extended annularreflecting body, a lamp socket in the neck, an upper cap, a closing centrally apex: tured wall covering the lower interior portion of the neck, individual supporting arms for the wall having their upper ends provided with terminal inwardly extending flanges secured between the cap and the upper end of the lamp socket, and means supporting the socket. I

5. A reflector as described having an upper hollow neck and an outwardly extended annular reflecting body,-a lamp socket in the neck, an uppercap engaging the top of the neck, a closing centrally apertured wall covering the lower interior portion of the neck, individual supporting arms for the wall having their upper ends engaged and secured between the cap and socket and provided with lower attaching flanges secured to the closing wall, and means supporting the cap.

6. In combination with a reflector shell having a middle concaved portion and an base of the neck engaging said concaved portion, and means engagin the upper end of the socket and the disk or supporting the shell.

portion, and means having an upper connection with the socket support and attached to. the disk whereby the reflector shell is car-' ried thereby. g

8. In combination with a reflector shell having a middle concaved portion and an uppersocket holding cap and means supporting a lamp socket therefrom, a lower concaved closing disk extending across under the base of the neck engaging said concaved portion, and means having an upper connection with the socket-support and detachably attached to the disk whereby the reflector shell is carriied thereby'and the parts may be disconnecte I r 9. In combination with a reflector shell having a middle concaved portion and an upper socket holding "cap and means supporting a lamp socket therefrom, a lower concaved closing disk extending across under the base of the neck en agin b y ,p

said concaved portion having a, middle lamp clearance opening and annular slotted enlarged clearance openings for securing screws, and individual supporting arms depending from the cap within the neck having screw engaging terminals.

10. A reflector as described having an upper hollow neck andian outwardly extended annular reflecting body provided with a concaved portion at the base of the neck. a lamp socket in the neck, an upper cap, asupporting pipe conduit connected with the cap a closing centrally apertured wall engaging said concaved portion covering and sup orting the lower interior portion of the nec and individual supporting arms for the wall having their upper ends engaged and secured between the cap and socket and provided with lower attaching flanges secured to the closing wall and having terminal prcfiigs engaging registering openings in the we In'testimony whereof I afiix my signature.

WILLIAM A. DUNLAP.

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