US1534081A - Ball loop - Google Patents

Description

April 21, 1925.

J. SANDUSKY BALL LOOP Filed Dec. 30. 1922 Patented Apr. El, W25.

m c m 613 iii infi te in is JOSEIPH SAND'USKY, F YORK. N. Y.

BALL LOOK.

Application filed December 30, 1922,

To all 'wfmm "it may concern:

lie it known that I, Josnrii Sannirsnr, a citizen of the United States, residing at Yew York, in the county of NW York and State of New York, have invented certain new and useful Improvements in Ball Loops, of which the following is a specification.

My invention relates to electric light inturcs, and one of the objects of the invention is to provide connecting: means between the electric light and its support, which can be readily placed in position.

Another object of the invention is to provide a connection which will conceal the electric wires from view.

A further object is to provide a universal joint which will permit the lamp to be swingahly connected to its support and at the same time will prevent such rotation as would cause twisting and breaking of the electric wires.

With these general objects in view, my invention consists in certain novel and peculiar features of construction and comhination of parts as hereinafter described and claimed, and'in order that it may be fully understood, reference is to be had to the accompanying drawing, in which Figure 1 shows a light suspended from a chandelier, the connection being shown in section;

Fig. 2 is a perspective view of the preferred form of connection, the parts of the coupling being shown separated;

Fig. 3 is a transverse section along the lines 33 of Fig. 2, corresponding to the line. of Fig. i;

Fig. 4 is an elevation of the ball and socket connection.

At the present time, the prevailing HlQlLllod of attaching electric lamps to chandeliers is by means of chain links, which leaves the electric wires open to view. In pulling the wires through the apertures of the connec tions, located at the ends ot the links in the chandelier and the lamp, they are pulled at such an angle .as to sometimes cut the insulation on the electric wire. By the provision of the improved connections, the wires are concealed from View, and in pulling them straight through the (.tlllilCtlOll, there is no danger of evil inc insulation.

In the drawing, 1 represents the conventional chandelier suspendtd by chains 2 and place in the Serial No. 809,801.

carrying on its outer edge lamps For securing the lamp to the chandelier, 1 provide a unircisal connection, which may be" and at the opposite end is provided with a screw thread 5 for engagement with a co 1nplerncntal screw threaded aperture (l carried by the lamp. The socket section 7 is also provided with a screw threadedend 850i engagement with a conipleniental screw threaded aperture 9, which is formed in the end loop 10 of the supporting chain. Both the hall and the socket sections are provided with flanges 11, which serve to limit the movement of the screw threads in their final position and also furnish a satisfactory means for holding and turning; the parts, while assembling the same. Extending through the joint and longitudinally of its axis are conduits 12 and 13, for the passage of the electric wires 'l-ct which lead to the lamp.

To prevent turning of the joint around its longitudinal axis and which would take case of an ordinary ball and socket joint, with the result. of twisting of the electric wires and breaking the insulation, I provide an improved construction, which will permit the lamp to swing freely, without rotating around the longitudinal axis of the joint.

l i'hen the. ball and socket joint is used,

the side ot the hall is milled oil to provide a flat surface 15. lhe side of the socket section is provided on its inner side with a surface that is out of alignmentwith the spherical inner le, so that contact therewith of. the fiat side i of the ball will limit rotation about the longitudinal axis of the joint. ihe eccentricity of the socket may be attained by merely bending in the lnetai oi the socket to provide a projection lti.

It will be understood that the cooperating parts of each joint lit loosely and. have sutticient play," so that the suspended lamp will ircclv take a vertical position by its own weight.

From the above-description it will be apparent that l have produced a device of the character enumerated as desirable, and while vii have illustrated and described the preferred form of the invention, it will be understood that I reserve the right to all changes properly falling within the spirit and scope of the HPPBHClGCLClRlHJS.

claim:

1. An electric light fixture comprising a support and an electric lamp provided With screw threaded openings, a coupling for connecting the lam t0 the support comprising two short-tubu ar members, a ball at one end of one of the said members engaging a socket at one end of the other member, the

connection between the said ball and socket secured to the lamp adapted at all being freely movable and loosely fitting,

screw threads at the outer ends of said members, adjacent to the said ball and socket, the said threads adapted to engage the said openings, the part of the coupling times when in operative position to normally assume a Vertical position, a cut-away portion on the ball and an eccentric portion on the socket, the said portions cooperating to prevent-substantial rotation of the ball and socket about the longitudinal axis of the joint but permitting free swinging movement.

end of one of the said 9. An electric light fixture comprising a support and an electric lamp provided with screw threaded openings, a coupling for corn necting the lamp to the support comprising two short tubular n'iemhers, a hall at one members engaging a socket at one end of the other member, the connection between the said ball and socket being freely movable. and loosely fitting, screw threads at the outer ends of said incinhers, adjacent to the said ball and socket, the said threads adapted to engage the said openings, the part of the coupling secured to the lamp adapted at all tiines When in opcrzn tive position to normally assume a vertical position, a flat portion on the side of the ball and an inwardly projecting portion on the socket, the said portions cooperating to prevent substantial rotation of the ball and socket about the longitudinal axis of the joint but permitting free swinging movement.

In testin'iony whereof I aflix my signature.

' JOSEPH SANDUSKY.

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