US690113A - Electric-light adjuster. - Google Patents

Description

No. 690,!13. Patented Dec. 3|, |90I. J. A. LEGGATT. ELECTRIC LIGHT ADJUSTER.

(Application Bled June 1, 1901.)

(No Model.)

Witnesses.

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Unrrn STATES vParier OFFICE.

JOIIN ALEXANDER LEGGATT, OF HAMILTON, CANADA.

ELECTR|CLIGHT ADJUSTER.

SPECIFICATION forming part of Letters Patent No. 690,1 13, dated December 31. 1901.

Application filed June 1, 1901. Serial No. 62,709. (No model.)

To all whom it 'nw/Z] concern.-

Beit known that I, JOHN ALEXANDER LEG- GATT, a citizen of Canada, residing at Hamilton, in the county of Wentworth and Province of Ontario, Canada, have invented certain new and useful Improvements in Electric- Light Adjusters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains` to make and use the saine.

My invention relates to improvements in electric-light adjusters in which a certain flanged cup or socket is secured to a ceiling or wall, a ball with lower shank in the lower part of the socket, the shank protruding through the socket, a vertical tube secured to the shank, and a tube with electric light capable of telescoping in said secured and outer tube.

The objects of my invention are, rst, to provide an electric light which is capable of being adjusted from the vertical to various angles or oblique positions radiating from the center of the supporting-ball; second, toprovide means for staying the electric light in desired vertical or other position; third, to at'- ford facilities for raising or lowering the light, and, fourth, to provide means for staying the light to any desired raised or lowered position. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure l is a sectional elevation of the electric-light adjuster, also two of the many positions, in broken lines, to which the light may be adjusted. Fig. 2 is an elevation of the detached cross-bar of the cup. Fig. 3 is a plan of the same. Fig. 4 is an elevation in detail of the ball with shank and cap. Fig. 5 is adetail plan ot the ball. Fig. 6 is an enlarged detail elevation ofthe upper end of the slidable tube with spring-arms for holding the tube in position, and Fig. 7 is a plan of Fig. 6.

Similar characters refer to similar parts throughout the several views.

In the drawings the upper cup or socket is indicated by A and is provided with an annular liange or lugs 2 for securing the same to a ceiling B or to a wall, as the case may be. The socket A may be of various shapes and designs; but the lower or socket part proper must of necessity be round and of socket formation to suit the ball C. The lower part of this socket has an opening 3 to allow the shank D of the ball C to pass through. This opening 3 is about twice as large in diameter as the diameter of said shank D in order to allow the shank, with its appendages, to be placed or adjusted to different oblique positions. The

ball, together with its shank D, has a through vertical opening 4 to allow the electric wire E to pass through. A vertical tube F is secured to the shank D and is suspended therefrom, and the lower end oi' the tube F is provided with a reducing-collar H, which is screwed onto the end of said tube F. This collar H has a central vertical opening 5 of the same diameter as the diameter of the inner slidable tube J. The slidable tube J is capable of sliding through the opening 5 of the collar Il when manipulated. The lower end of the slidable tube J is provided with an electric-light device K, which is secured to the tube in approved manner. The upper end of the tube J is provided with a secured inner ring M, with outer projecting and suitably curved spring-arms N, which when pressed toward the center of the tube J said tube is capable of entering the outer tube F, and the arms N then press outward and press against the inner sides of the tube F and retain the tube J in manipulated position. The said arms N will allow the tube J to slide in the tube F by the inherent resiliency of the spring-arms.

The ball C has a cap P. Said cap has a through central opening 6 for the passage of the electric wire E. The lower concaved face of this cap P rests upon the ball C, and the upper fiat face of the cap P is connected to the upper bar R by means of the spiral pressure-spring S, which presses against the bar R and the cap P to stay the ball C. The bar R fits against the lower part of the inner Iiange 7 of the cap or socket A. The bar R may be inserted into position and also the ball C and cap P through the upper opening of the socket A previous to securing the socket to the ceiling 13. The bar R has a central opening l0, which is continued through its central boss 8 for the passage of the electric wireE. The cap P has a central boss 9 to con- IOO form to the central boss 8 of the bar R. These two bosses 8 and 9,respectively, tinto the ends of the p`ressure-spring S to retain the spring in proper and relative position to the bar R and the cap P. The tension ot the spring S is to press upon the cap P in order that the cap may press upon the ball C and retain the ball in desired position in the socket A when the tubes F and J are brought to other positions a's well as to vertical position, as shown. The electric wire E is connected at one end to its source of power, and the other end of the wire is passed through the central openings of the bar R, the spring S, the cap P, thc ball C, and its shank D. The WireE is then allowed to coil, as shown, in ample length in the tube F to allow the tube J, with the electric light K, to be brought downward to its limit.'Y The electric Wire then passes through the central opening of the ring M, thence through the Vertical tube J, and into the 0rdina-ry electric device or light K, which is secure-d to the end of the tube J.

It Will be obvious that when the ball is manipulated by means of its connected tubes the electric wire Ewould bind if it were not for the spread or flaring out of the upper part of the vertical and central opening 4 through the4 ball C. The opening G through the cap P is also flared out at the lower concaved part inA like manner as the upper Hare of the central opening of the ball to prevent or counteract any possible binding ot' the electric wire E when the electric light is being manipulated to a different position.

The described method of holding an electric light in a desired place and position is verydesirable, especially so in various opera-- tions and professions where it is necessary tov have the light in close proximity to the object of sight.

Various changes inV the form, proportion,

vand minor details of this invention may be resorted to without departing from the spirit and scope thereof. Hence What I claim as my invention, and desire to secure by Letters Patent, is-

1. In an electric-light adjuster, a stationary socket, an opening in the socket, a ball in the socket, a shank on the ball to extend through said opening, a central opening through said ball and shank, said opening in the ball flared out, a cap on said ball, a central opening through said cap, said opening in the capflared out contiguous to the flared opening of the ball, a bar, across the uppery part of the socket, a tiange on the socket 'to hold said bar, a central opening through the bar, and a spiral spring connected to the bar and the cap, substantially 'as described and set forth.

2. In an electric-light adjuster, a stationary socket, a stationary bar across the upper part of the socket, a central opening through said bar, an opening through the lower part of the socket, a ball, a shank on the ball eX- tending through said opening, a central opening through said ball and. shank, a tube secured on the shank, a reducing-collarv on the ,end of the tube, a slidable tube in the stationary tuber and extending beyond, springarms extending from the inner end of the slidable tube to press against the inner part of the stationary tube, an electric light connected to the extended end of the slidable. tube, a cap on the ball, a central opening through the cap, and a spiral spring connecting said upper bar and cap, substantially as described and set forth.

In testimony whereof I aflx my signature in presence of two witnesses.

JOHN ALEXANDER LEGGATT.

Witnesses:

JOHN H. IIENDRY, B. E. HERALD.

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