US415602A - Lamp-shade - Google Patents

Description

(N0M0de1.)' 2Sheets-Sheet 1v W. S. BERG.

LAMP SHADE. 7

No. 415,602. I Patented Nov. 19, 1889.

N4 PETERS, Phnlo-b(hognphur, Washington. 0, c.

' ZSheefls-Sheet 2.

(No Model.)

W. $3339 LAMP SHADE.

Nov. 19', 1889.

N. PETERS. PhoRo-Lxlfmgmpher. Waihillglon. B.C.

UNITED STATES A PATENT OFFICE.

\VALTER S. BERG, OF PHILADELPHIA, PENNSYLVANIA.

LAM P-SHADE.

SPECIFICATION forming part of Letters Patent N 0. 415,602, dated November 19, 1889.

Application filed June 22, 1889. Serial No. 315,212. (No model.)

To all whom itmay concern:

Be it known that I, IVALTER S. BERG, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Lampshades, of which the following is a specification.

My invention relates to the class of lampsh adeof umbrella form that, at terbein g opened and distended, is adjusted over a lamp and can be folded up when not in use.

Modifications of the structure described herein are shown and claimed in a companion application of even date hereof.

My invention contemplates the provision of a lam p-shade constructed of a limited number of elements and in combinations thereof, the whole being simple in form and easily adjustable by persons unskilled in mechanical movements or operations, no separate or ad ditional members being required for maintaining the device in a closed position other than those employed to keep it spread open.

The invention is hereinafter fully described, illustrated in the drawings, and specifically pointed out in the claims.

'Referring to the accompanying drawings, wherein like letters and figures of reference point out similar parts on each figure, Figure 1 represents a lamp supplied with a shade constructed according to my invention, parts being broken away. Fig. 2 is an enlarged crosssection of the upper part of the device, showing a portion of the covering fabric and one form of connecting the concentric clampingcollars; also, a portion of one of the supporting-rods, illustrated as adapted to be extended vertically. Fig. 3 isa detail view of the outer flanged top-notch collar having inwardly-extending short pins to mesh with bayonet-slots upon a collar adapted to fit concentrically therein. Fig. 4 is a detail view of a collar the band of which is provided with bayonetslots for the reception of the projecting pins shown in Fig. Fig. 5 is a detail view, parts being broken away, of one of the supportingwires slotted vertically and having within said slot a wire spring bent at various portions of its length, whereby the device can be maintained at various elevations. Fig. 6 is a detail view of bands adapted to be united concentrically and separated by means of normal torsion and resiliency.

The principal feature of my invention, being novel improvements upon analogous devices, consists in provision of means whereby I maintain the ribs to which the covering fabric is connected extended without the employment of any stretchers, which are some times called supporting-bars.

As will be seen from the description and drawings, the whole device is intended to be supported upon abase-ring, which in practice rests upon the ring-plate that forms part of the structure of ordinary lamps and gas-fixtures for the reception of the globe, the chimney, or both.

The improvement.relates to that class of analogous devices whereby a shade can be maintained at any desired elevation by shortening or lengthening the supporting-rods.

In the drawings, A represents a lamp; A, its chimney, and 5 the ring-plate common to articles.

B is the shade proper, consisting, essentially, of a series of ribs 17, covered by suitable fabric 1). The ribs are pivoted to a topnotch collar 1, which consists of a circular band 0, having an upper outwardly-flaring fiange 0 attached thereto by rivets, soldering, or any suitable means, or in any suitable manner.

The collar 0 is provided with a spring or detent to receive the meshing device of another collar D, presently more particularly described. I show in Fig. 2 practical means for union of these two collars or rings, although I do not desire to be understood as limiting myself to such construction, as there are many well-known mechanical means that can be have a series of lateral bends or corrugations that will impart spring-torsion thereto, that will grasp and firmly clip the flange d of the ring D when inserted in place. At the lower end of the band 0 and outwardly-eXt-ending therefrom is a circumferential flange 0 which I denominate a top-noteh flange, inclined at an angle opposite to that of the upper flange 0. The periphery of this top-notch flange is grooved, cut away, or notched to re-' eeive the upper ends of the ribs 1), which are riveted or threaded therein through eyes at suitable distances apart to enable said ribs to be extended radially therefrom when the shade is distended.

D is another collar or ring, consisting of a main circular band d, of size and dimension to lie snugly within and concentric with the band 0 of the ring 0, and when introduced in position the band d will be securely clasped therein. For the purpose of securing proper tensional friction and enabling the band (1 to be readily inserted and withdrawn to and from within the lip-flange 0 it is preferable that the upper end of the band (Z be bent to form one or more annular grooves, as shown at 2.

It will be readily understood that the two rings 0 and D thus constructed can be easily connected and separated by hand in a simple way. The union and withdrawal of the bands 0 d can, however, be secured without any additional springs or detents other than the normal torsional function of said bands, as rcpv resented in Fig. 6, in which form the lipfiange 0 can also be dispensed with. Said bandsare made of spun metal, which has necessary pliability and resiliency for the purpose intended. For more completely securing the object desired, the bands should be slightly tapering in an upward direction,thus composing two short conical tubes. Additional torsional properties may be imparted thereto by placing on each hand one or more circumferential annular grooves 2, as plainly illustrated in Fig. 6.

Figs. 3 and 4 represent another form for connecting such rings, dispensing with springclipping features. In this modification the band of the outer ring 0 is provided with one or more inwardly-extending studs 3, the 0011- cent-rie band, Fig. 4:, being supplied with bayonet-slots 4, with which said pins intermesh when brought together, whereby a more perfect union of the parts is effected. The ring D is permanently attached to the upper ends of supporting-rods E, the lower ends being connected to a base-ring F, said ring being supplied with clamps, that in practice clasp the periphery of the ring-plate 5, composing part of an ordinary lamp or gas fixture, for reception of a globe or chimney. The basering F may be constructed to clasp the ringplate, or may be adjustable by means of a thumb-screw 6, both forms of construction being illustrated in Fig. 1 at opposite sides of the lamp.

The rods E are preferably bent outwardly at a portion of their length to accommodate the bulge of chimneys, such shape being commonly used in place of a simple tube. For varying the height of the shade proper, I

prefer that the rods E shall be vertically eX- tensible. For this purpose each bar E should consist of two lengths or sections to partially slide into or alongside of each other. If the upper portion '7 is made tubular, it will compose a sleeve into which the lower section will be free to slide telescopically, and ordinarily will be maintained by frictional contact; but for further security, if desired, one or more of said rods may be provided with a thumb-screw S.

It will be observed that there extends from the lower end of the band (Z of the ring D a wide circumferential flange d, diverging from said band at a slightly-oblique angle, which in practice supports the pivoted ends of the ribs b, and with them the attached fabric, thus dispensin with stretchers to distend the shade-cover. This feature of my invention I consider a valuable improvement on all analogous devices, as such stretchers impede the light and cast radiating shadows, which are very objectionable. Besides, the positive action of the flange 61' keeps the whole surface of the fabric uniformly distended, without risk of deviation in contour, which is not the case when stretehers liable to be bent are employed.

From the above description, in connection with the drawings, the nature and practice of my invention will be readily understood. operation may be thus stated: The covering having been attached over the ribs b to the top notclnas in the case of umbrellas, the band (Z of the ring D is inserted within the band of the top-notch ring 0 and secured therein, and the flange (1' will thereby be forced upward and distend the shade, as shown in Figs. 1 and 2. The base-ring F is then placed over the lamp-ring plate 5 and securely adjusted thereto by means of spring clamp or thumb screws, as the case may be.

As before set forth, the Whole may be lowered or elevated vertically by movement of the support-ingrods when made sectional for such purpose. \Vhen after removal it is desired to fold the shade compactly, the band cl is withdrawn from the top-notch ring, thus causing the ribs to fall downwardly around the supporting-rods, and they can be retained in position for packing or other pur' poses.

Having now fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A folding lampshade consisting of aseries of fabric-covered ribs pivoted to and radiating from a top-notch collar, having upper and lower flanges extending outwardly inv opposite oblique directions, in combination with collar D, the band at of which is adapted to fit concentrically within the band 0 of the collar 0, said bands being supplied with intermeshing springs, the collar D having a lower wide circumferential flange extending outwardly and inclined downwardly, said flange supporting and sustaining the shade proper Its when extended, as and for the purpose indicated, substantially as described.

2. The collar D, having circumferential flange d permanently and rigidly attached to the upper end of supporting-rods E. the lower ends of said rods being permanently and rigidly connected to base-ring F, said base-ring adapted to rest on and be detachably adjusted to the ring-plate 5 of a lamp, as and for the purpose indicated, substantially as described.

3. The collar D and base-ring F, permanently adjusted to the upper and lower ends of supporting-rods E, said rods being divided into sections adapted to slide together vertically, whereby the distance between said collar and base-ring can be varied and the lamp shade B elevated or depressed, substantially as described.

4. The combination, in a distensible lampshade, of the intermeshing collars O D, the latter being supplied with a lower outwardly and downwardly inclined circumferential flange d, which will lie under and support the pivoted ends of the ribs 1) when the device is opened, said collar D being rigidly attached to vertical rods E, the lower ends of which carry a base-ringE, supplied with suitable fast-ening devices for connection thereof to the ring-plates 5 of a lamp, said shade being adapted to be unfolded by disconnecting the intermeshing collars, and the fabric-covered ribs compactly grouped around the supporting-ribs, as and for the purpose indicated, substantially as described.

5. In a lamp-shade, the extensible supporting-rods 'E, curved outwardly a portion of their length, permanently attached at their upper ends to a collar D and at their lower ends to base-ring F, said rods being supplied with one or more spring-catches to maintain them elevated at given altitudes, as and for the purpose indicated, substantially as described.

6. In an extensible lamp-shade, the topnotch collar 0, the upper periphery of the band 0 of which is turned over downwardly and inwardly to form a circumferential lipflan e c in combination with the intermeshing concentric collar D, the upper end of which is adapted to be detachably received under said lip-flange, as and for the purpose set forth.

\VALTER S. BERG.

YVitnesses:

ISIDORE BIRGE, CHAS. B, KEEN.

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