US1149004A - Lamp-shade. - Google Patents

Description

Isaac ctrnnsv, or scans were, COLORADO.

LAMP-SHADE.

' Specification'of Letters Patent.

Patented Aug. 3, 1915.

Application filed November 28, 1914. I Serial No. 874,456.

To all 207a 0m itmay concern:

Be it known thatI, ISAAC G. TERRY, "a citizen of the United States of America, residin at Buena .Vista, in the county of Chaflee and State of Colorado, have invented new and useful Improvements 1n Lamp- Shades, of which the following is a specifi: cation. 7 This invention relates to improvements in lamp shades and has particular application to an adjustable shade. I

In carrying out the present invention, it is my purpose to provide a lamp shade of the canopy type wherein the canopy or shade may be swung toward and away from the lamp so that the area illuminated by the light rays issuing from the lamp may be decreased and increased according to the movement of the canopy. It is also'my purpose to provide a device of the class described wherein the canopy may be adjusted with ease and convenience and held in adjusted position for the desired period of time.

A further object of my invention is to provide an adjustable lamp shadeor canopy which will embrace the desired features of simplicity, efficiency and durability, which may be manufactured and marketedat a minimum expense and which may be applied to lamps illuminated by electricity, etc.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawing; Figure 1 is a top plan view of a lamp shadeconstructed in accordance with the present invention. Fig. 2 is a sectional view on the line 2-2 of Fig. 1. Fig. 3 is a view in side elevation of the controlling annuli. Fig. 4 is a bottom plan view of such annuli. Fig. 5 is a fragmentary top plan view showing a modified construction of shade.

In the present instance, I have shown and described my improved lamp shade as applied to an electric lamp andin this connection I wish it to be understood that the invention, in its useful application, is not limited to this particular purpose, as'the same is equally applicable to lamps of other types.

Referring now to the drawing in detail, 1 designates an electric lamp bulb having the butt end thereof threaded into the usual regas, oil,

ceptacle 2, such receptacle being formed with a circular bead 3 adjacent to the open end thereof. Encircling the receptacle 2 is an annulus l having the inner surface there of formed with a circular ing movement of the annulus relatively to the receptacle will be prevented. This annulus 4: is formed ofany suitable or desired material and formed in the outer edge thereof, that is, theedge adjoining the open end of the receptacle 2, is a circular series of recesses5 spaced apart equidistant. 6 designates supporting arms, each having one end coiled upon itself to form a spring 7 and then extended at right angles as at 8 and the remaining end curved as at 9 in a direction opposite to the projecting end 8. The projectingends 8 of the respective arms 6 are disposed within the recesses 5 in the outer v groove 5 designed to receive the bead 8 so that accidental slid-'- edge of the annulus 4 and appropriately fasv tened within such recesses, while the springs 7 are. spaced apart from the adjacent ends of the annulus and act to hold the arms 6 normally extended outwardly from the lamp 1, such arms radiating cured to, the arms 6 and, supported thereby and disposed concentrically of the lamp is a shade 10;formed of any suitable material such, for instance, as paper formed with radial crease lines 11. In the present instance, this paper or cover is plaited as clearly illustrated in Fig. 1 of the drawing. It is conceivable, however, that the paper may be otherwise creased.

Surrounding the annulus 4 is a second annulus 12 having one edge thereof bearing against the inner end portions of the arms 6 and capable of axial movement upon the annulus 4S0 that the arms 6 may be swung inwardlytoward the lamp 1 when it is desired to contract the shade soas to reduce the area illuminated by the lamp and concentrate the light rays, and outwardly from from the lamp. Se-

the lamp when it is desired to increase the other hand, when it is desired to increase the diameter oftheshade so that the area "illuminated by the lamp may be likewise 1O folds afiected, the direction of movementof the in 15 is reversed, thereby sliding the annulus 12 in the reverse direction to release the arms 6 and permit the springs 7 to react and swing the arms outwardly from the lamp. In the inward movement of the arms under the action of the annulus 12, the shade up owing to the radial crease lines therein, while inthe outward. movement of the arms under the action of the springs 7 the shade unfolds and is stretched.

If desired, the shade 10 may be formed of a series of plates 18, as illustrated in Fig. 5 of the drawing, such plates being secured to and carried by the respective arms 6 and curved longitudinally to conform to the con figuration thereof and each having the longitudinal edges thereof overlapping and underlying the respective edges of the adjoining plate.

While I have herein shown and described certain preferred formsof my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein described and delineated, as modification and variation may be made within the scope of then extended at right angles and disposed within one of said recesses and normally eX- tending radially from said annulus under the action of said spring, said arms being capable of mward swmgmg movement against the action of the springs to diminish the area illuminated by the lamp,'a shade carried by said arms, a second annulus surrounding said first annulus and capable of axial movement thereon to engage the ad jacent portions of said arms to swing the latter inwardly and formed with a cross slot having rack teeth on one wall thereof, a pin rotatably mounted within said first annulus and extending through said slot, and a pinion on said pin meshing with said rackteeth whereby the last-mentioned annulus may be moved upon the first annulus.

In testimony whereof I afiix mysignature in'presence of two witnesses. I I i ISAAC G. TERRY. Witnesses:

A. E. SMITH,

F. A. BROMLEY.

Copies of this, patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. '0.

the claim without departing from the spirit I

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