US1567064A - Globe holder - Google Patents

Description

Dec. 29', 1925- A 1,567,064

M. LA SCOLA GLOBE HOLDER Filed Jan. 19, 1925 2 Sheets-Sheet 1 FIE-1.1.

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. M. LA SCOLA GLOBE HOLDER IN VENT 0/? WITNESSES Patented Dec. 29,. 1925.

'UNHTED STTEfi mama PATENT OFFICE.

MICHAEL LA SCOLA, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 IMARKEL LIGHT- ING FITMENTS, INCL, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

GLOBE HOLDER.

Application filed January 19, 1925. Serial No. 3,233.

To all whom it may concern:

Be it known that I, MICHAEL LA SCOLA, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Globe Holders, of which the following is a speclfication.

The invention relates to globe holders for electric lamp fixtures of the general type in which radially movable globe-engaging fingers are moved to and from globe-engaging position by the relative movements of two elements of the holder.

The object of the invention is to provide a globe hold-er of the general character explained which is simple in construction, neat in appearance,economical to manufacture, and which affords ample space interiorly for alamp and socket, and a holder in which the globe-engaging fingers may be securely held at various radial positions to properly support globes which differ in size, and in which such fingers are effectively held against sidewise displacement while being moved radially to engage or release a globe.

The invention is illustrated in the accompanying drawings of which Fig. 1 is a vertical central sectional view of a globe holder in which the fingers are arranged to move outwardly for engaging the inside of a globe, the plane of view being indicated by the line II, Fig. 2; Fig. 2 a transverse sectional view taken on the line II-II, Fig. 1; Fig. 3 a view corresponding to Fig. 1 showing a modified form of globe-holder in which the fingers are moved inwardly to engage the outside of a globe; and Fig. 4 a transverse sectional view taken on the line IVIV, Fig. 3.

Referring first to the embodiment of the invention illustrated in Figs. 1 and 2, the holder includes a casing 1 provided interiorly with a rotatable ring 2 which may be conveniently held transversely of the casing between an outwardly extending ledge 3 of the casing and an inwardly extending bead 4 formed below the ledge. The transverse portion of' ring 3 is provided with a plurality of curved slots 5 which are eccentric with relation to each other and to the cylindrical side wall of the casing, and through which globe-engaging fingers 6 extend. These fingers, which are preferably formed of sheet metal, are pivotally mounted at their upper ends in the casing side wall, and for this purpose their upper ends may be provided with hooks 7 adapted to engage the casing at suitable openings formed in it.

"The lower ends of the fingers are turned outwardly to engage the interior face of a globe 8 at its top opening. By rotating ring 2 within the casing, the lower ends of the globe-engaging fingers are moved radially, either inwardly or outwardly depending upon the direction of rotation of the ring. Their outward, globe-engaging positions are indicated in full lines on Fig. 1 and their inward, globe-releasing positions in dotted lines.

To prevent the fingers from being displaced or moved sidewise by the rotation of the ring, a matter which is liable to cause the fingers to bind or look the ring against rotation, the casing and fingers are provided with cooperating openings and tongues. Preferably the fingers are provided with openings 9 below their pivot points, and the casing with inwardly extending tongues 10 which project through the openings 9 at all radial positions of the fingers. The tongues 9 may, as indicated, be conveniently struck from the side wall of the casing. By such construction, each finger is held at two points against sidewise displacement, namely at its upper pivot point and at its openings 9, so that the fingers cannot lock the ring against its required rotation.

Because globes vary somewhat in size, due among other things to the conditions of their manufacture, the fingers are not always at the same radial position for engaging ifferent globes. The invention accordingly contemplates the provision of a clamp to firmly hold the fingers in variable globe-engaging positions to accommodate various siz s of globes. To this end, the easing is provided with an arcuate slot through which there extend a clamping member engageable from the exterior of the casing and attached to ring 2. Preferably, an arcuate slot 11 is formed in ledge 3 of the casing adjacent to ring 2, and a threaded pin 12, attached at its inner end to ring 2, extends through such slot and is provided exteriorly with a thumb screw 13. When the thumb screw is loosened, ring 2 may be rotated or moved angularly within casing 1 by engaging the nut and moving pin 12 through slot 11. At such position as fingers 6 occupy when they firmly ngage a globe 8, nut 13 may be screwed downwardly upon ledge 3 to firmly clamp the ring against further rotation in either direction.

As shown in Figs. 3 and 4, the invention is applicable also to globe holders constructed to engage the outer face of a globe. In this embodiment of the invention globe-engaging fingers 6 are curved inwardly at their lower e ds to engage the outer wall of the flare at the upper end of a globe 8 and curved slots 5 in the transversely disposed rotatable ring 2 in which the globe-engaging fingers lie, extend in the opposite direction from the slots 5 of the embodiment of the invention shown in Figs. 1 and 2. Henc the rotation of ring 2 from the position indicated causes the lower ends of the fingers to move outwardly to release the globe. The fingers are shown in full lines in their globe-engaging positions and in dotted lines in their open or globe-releasing positions.

In other respects the construction of the globe holder of Figs. 3 and t is substantially the same as that of Figs. 1 and 2. It includes tongues 10 projecting inwardly from the side wall of casing l through openings 9 in the globe-engaging fingers to prevent their endwise displacement upon the rotation of ring 2", and it also includes a pin 1) attached to ring 2 and extending through a slot 11 of the casing. The pin is provided with a thumb screw or clamping nut 13 to firmly hold the ring and casing in various relative angular positions so that the fingers may properly engage and hold globes which differ in size.

In both embodiments of the invention, the upper portion of the casing is preferably provided with a canopy 15, which may be variously shaped for ornamental purposes, and the lower end of which hides the pivot points of the globe-engaging fingers. The canopy may be conveniently attached to the upper end of the casing between the flanges of a stud l6 and a connecting ring 17, which stud and ring are provided centrally with a passageway for electric conductors.

It is characteristic of the globe holder that its parts are so formed and constructed that the rotatable finger-moving ring may be provided with a large central opening affording ample space toreceive a lamp socket and globe. Furthermore, the globe-engaging fingers being formed of sheet metal are sufficiently resilient to prevent breakage of globes due to their thermal expansion.

According to tl provisions of the patent statutes, I have explained the principle and operation of my invention and have fully illustrated and described two embodiments of it. However, I desire to have it understood that, within the scope of the appended claims, the invention may be practiced by forms of construction varying from those particularly shown and described to hold glass globes from the inside or outside as may be desired.

I claim as my invention:

1. A globe holder comprising an annular casing having a cylindrical side wall, a ring rotatably mounted in and extending transversely within the casing and provided with a plurality of eccentric curved slots, and a plurality of globe-engaging fingers extending through said slots and pivotally mounted at their upper ends in the casing side wall, the sidewall of said casing and said fingers being provided with cooperating openings and tongues to prevent sidewise displacement of the fingers when said ring is rotated to move the fingers radially within the casing.

2. A. globe holder comprising an annular casing having a cylindrical side wall, a ring rotatably mounted in and extending transversely within the casing and provided with a plurality of eccentric curved slots, and a plurality of globe-engaging fingers extending through said slots and pivotally mounted at their upper ends in the casing side wall, each of said fingers being provided with an opening below its pivoted end, and the side wall of the casing being provided with inwardly extending tongues projecting through said finger openings to prevent sidewise displacement of the fingers when said ring is rotated to move the fingers radially Within the casing.

3. A globe holder comprising an annular casing having a cylindrical side wall, a ring rotatably supported by and extending transversely within the casing, and provided with a plurality of eccentric curved slots, a plurality of globe-engaging fingers extending through said slots and pivotally mounted at their upper ends in the casing side wall, said casing being provided with an arcuate slot adjacent to said ring, a threaded pin attached to said ring and extending through said slot, and a clamping nut on said pin for clamping said ring to the casing in variable angular positions with relation to it, whereby said fingers may be held firmly at variable radial positions.

In testimony whereof, I sign my name.

MICHAEL LA SCOLA.

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