US1366093A - Electric-light cluster - Google Patents

Description

H. C. NOE, ELECTRIC LIGHT CLUSTER.

APPLICATION nuao MAY 20, 1920.

1,366,093, I Patented Jan. 18,1921.

UNITED STATES HAROLD G. NOE, OF EAST ORANGE, NEW JERSEY.

ELECTRIC-LIGHT CLUSTER.

Specification of Letters Patent. Patented J an. 18, 1921.

Application filed May 20, 1020. Serial 1N0. 332,833.

T 0 all whom it may concern Be it known that I, HAROLD C. Non, a citizen of the United States, residing at East Orange, in the county of Essex and State oi? New Jersey, have invented a certain new and useful Improvement in Electric-Light Clusters, of which the following is a specification. j

The invention relates to means for supporting'electric lamp-sockets on a standard, usually in pairs or clusters extending (lially from the standard and angular-1y thereto, and the objectof the invention is to provide simple, easily operated. means for varying the angular positions of the sockets vertically as desired and for holding the sockets reliably in the adjusted positions against any strains tending to depress them, as for example, the strain of the switchchain in lighting or extinguishing the lamps.

The invention consists in certain novel featnl'esof construction and arrangement by which the above objects are attained, to be hereinafter described and claimed.

The accompanying drawings form a part of this specification and show the invention as it has been carried out in practice, ap

plied to a standard having a cluster of four lamps.

Figure 1 is an elevation showing-the upper end of a standard thus equipped.

shell.

i are attached.

Fig. 2 is a corresponding vertical section,

partly in elevation. c c

Fig. 3 is a plan view with a portion re moved to show the arms to which the sockets Fig. 4; is a perspective view of one of such arms.

Similar letters of reference indicate the same parts in all the figures. The standard comprises a vertical. tube A adapted to contain the wires or conduits for the lamps, having a hemispherical cup B at the upper end, covered by a hemispherical cap ill forming with the cup a spherical a central opening in the cup and receives a. threaded collar D which clamps the cup firmly to the tube. j

Above thecollar Dis a pedestal D joined to the collar by arms l) forming with the collar an open frame within the shell. Into the pedestal D is screwed a vertical. screw threaded stud F extending axially of the shell and projecting through a central hole the cup B;

screw-threaded ,hollow nipple A at the upper end of the tube extends through in the cap C; The protruding end receives a capnut E by which the cap C is held to The latter'is provided with vertical slits or deep notches b extending downwardly from its flange or skirt C inclosing such rim.

x G arelamp-socketsof any approved type, shown as equipped with pulls or switcli-chains G and adapted to receive the usual lamp bulbs, not shown. Each socket is screwed upon a nipple H projecting radially through one of the slits b and mounted on the lower end oi? a curved arm H. within the shell.- Eacharm H is provided with a longitudinally extending slot h receiving the stud F. l

Four arms H are shown in the drawings arranged at an angle of 90 each to the other, with four sockets Gr extending radially from the cup 13. The four arms lie one upon the other with the lowermost slipported upon an abutment J, shown as a nut, on the stud F, and the uppermost supports the cap Thus arranged the'act of screwing the cap-nut E unonthe stud F forces down the-cap C and compresses the arms H ietween latter and the abutment J, and by the frictional contact thus induced holds the arms firmly against longitudinal move ment in the direction permitted by the engagement of the stud l? in the slots h and the nipples H in the slits b.

The armsare of thin metal and are curved on radii corresponding tothe interior of the spherical shell formed by the cap and cup, so that when the pressure is lessened by relaxingthecapmut E, the nipples H to rim, and the cap Chas a and" connected lamp-socketsmay be moved up or down in the slits Z) to an extent determined by the length of the slits orlength of the slots 71. inclosing the stud F.

Sufiicient friction may be maintained to hold each socket in the desired angular position until all are adjusted, and a further tighteningof the cap-nut binds all the arms frictionally and all the sockets are thus held firmly and reliably.

Any number-of arms may be employed with a correspondingly slitted cup, by adjustingthethreaded abutment J to the space occupied by the superposed arms Has will be understood.

The sockets G may be attached to the nipples H while the arms H are removed from the cup B and the wiring easily accomplished with the parts thus exposed; the

arms H are then successively threaded upon the stud F through the slots h, with the nip ples H inserted in the open ends of the slits b and moved downward therein. The cap C is then applied and the cap-nut E screwed on the stud to induce a degree of friction suflicient toholdthe arms temporarily while the sockets are adjusted to the desired vertical angle, and then tightened to hold the arms securely in the adjusted positions.

Theopen frame formed by the collar D I and its arms D and pedestal D permits the Fig. 1;

Iclaimz- 1. In a device of the character, set forth, a cup having, slits therein, a plurality of superimposed arms Within said cup, having nipples extended outwardly through. such slits, movable in the latter and adjustable in the direction of the length thereof, adapted to carry lamp-sockets, and means for clamp- .lng said arms. one upon the other to hold such sockets in position.

'2. In aadevlce of the character set torth,

I a cuphaving slits therein, a stud in said cup, a plurality of superimposed arms each having a slot'inclosing said stud, and a nipple extended outwardly through one of such slits, adapted to: carry a lamp-socket, and means coactingwith said stud for clamping;- said'arms one uponvthe other to hold such sockets in position. 7

3'. In a deviceot the character set forth,

' a hemisphericahcup having'slits therein, a

plurality of; superimposed curved arms Within saidcup, each having a nipple extended through oneof. such slits and adapted to carry alamp-socket, and means for compressing said arms'into strongfrictional.

- contact I with each other.

4. In adevice of: the character set forth,

hemisphericalcup having slits-therein, a

hemispherical cap covering said;v cup and form ngwlth the' latter a spherical shell, a

stud in such shell extending through said I cap, a plurality of cur'ved arms within such andv a/nipple extended= outwardly through one of. such .slits, adapted-to carry'a lampshell, each havingla slot-inclosing-said-stud.

socket, an abutment on said stud beneath said arms, and a nut on said stud exterior of said cap.

5. A hemispherical cup having slits llllkfl in, a hemispherical cap covering said cup and forming with the la t ter a splu- 4. an axiall loanted stud in s. eh shell 0 ed through said cap. a plurality of suporinr posed curved arms within said shell, each having a slot inclosingsaid stud, and a nipple extended outwardly through one of" such slits, adapted to carry a. lamp-socket, an abutment on said stud beneath said arms. and means operable on the erztcrior ol such shell and coacting with said stud and abutment for compressing said arms upon each other.

6. In a device oi the character set forth. a cup having slits therein, a plurality ol superimposed arms within said rup, each having a. nipple extended outwardly through one of such slits, a stud in said cup 0);- tended through said arms. an abutment on said stud beneath said arms, and means above said-arms, coactinpwith said stud and abutment for compressing), said arms upon each other.

7. In a device of the charactm set forth. a llGIlHSPllGllCtl cup havmg a slit tlwreiu. an armin said cup curved substantially concentrically to said cup, having at one end a longitudinal slot and at the other end a nipple extended outwardly through such slit and adapted to carry a lamp-socket. an abut ment in said cup, and means extending through such slot for clamping saidarm to said abutment.

S. In a device of the character set forth. a hemispherical cup having slits therein, a plurality of arms in said cup curved substantially concentrically to sai cup and rerlapping one upon another, each of said arms having a slot and a nipple extended outwardly through one of such slits and adapted to carry a lamp-socket, a stud in said cup extending through such dots. an adjustable abutment on said stud beneath said arms, and a nut on said stud ahovc said arms, adapted to compress said arms upon each other.

9. In a device of the character set forth, a cup having slits therein. a plurality of arms within said cup, having nipples extended outwardly through said slits, movable in the latter and adapted to carry lamp-sockets. and means for clamping; said arms to hold such sockets in position.

In testimony that I claim the invention above set forth I affix my signature HAROLD (l. NOE.

shell.

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