US1806852A - hamlyn - Google Patents

Description

May 26, 1931- s. w. HAMLYN 1,806,852

ELECTRIC LAMP SHADE AND/OR FITTING Filed June 20. 1929 3 Sheets-Sheet 2 i Z Wa Q L 22 T d a l? a? d? M33 26, 1931 s. w. HAMLYN 1,806,852

ELECTHIQ LAMP SHADE AND/VOR FITTING Filed June 20, 1929 3 SheetS-Sheet I5 WMF/rime Cf V 649/171041/ patented May 26, 1931 SIDNEY WILLIAM HAMLYN, 0F LONDON, ENGLAND ELECTRIC LAMP SHADE AND/OR FITTING Application led June 20, 1929, Serial No. 372,389, and in Great Britain .Tune 23, 19.28.

rlhis invention relates to improvements in electric light lamp shades and/ or fittings and hasfor its chief object to provide a fitting which will give a diffused light, which fitting will be readily demountable in order that it may be cleaned and in order that it may be packed into a small space for transport and storage purposes.

According to thisinvention, the tting comprises a plurality of discs of glass or the like which are supported externally in such a mannerl that they are readily removable for cleaning and other purposes.

rThe support may be inthe form of a collapsible framework of spider form, one of ried by the framework or the -support in order that the filament thereofmay be arranged ait the most ecient position with respect to the discs.

In order that this invention may be the more clearly understood and `readily carried into effect, I will proceed to describe the same with reference to the accompanying drawings which illustrate thisinvention by way of example and not of limitation, and in which Figure l is an elevation of one convenient form of fitting according to this invention. Figure 2 is a perspective view showing the saine collapsed. Y K

Figure 3 is a section on an enlarged scale of the upper portion of the fitting showing the means of adjusting the bulb holder.

Figure d is an underplan view of oneY of the glass discs, and p Y Figure 5 is a side elevation of the same. Figure 6 is an elevation of a further form of this invention in which the glasses Vmay be removed without collapsing the framework and also showing one of the glasses about to be removed.

Figure 7 is a. view similar to Figure S, butV from a slightly dierent angle. A

Figure 8 is a fragmentary view illustrating a further form of this invention.

Referring now to Figures l to 5 of the accompanying drawings, the device comprises an upper bowl a provided with a ring al by means of which the whole device may l be suspended from a suitable hook or` the like on the ceiling. Extending radially from thel said bowl a are four arms b, c, el and e Y which afterextending outwardly and down- Venables the glasses f to be readily inserted into and withdrawn from the framework.

- Each of the downwardly extending arms b1,

c1, Z1 and e1 is provided with a plurality of ledges b3, c2, cl2 and e2 to support the glass discs If desired the ledges may be replaced by clips as shown on the arm 'cl in order to limit the movement of the glassV discs;c in the upward direction as well as to support thesame.

A strainer or stretcher is arranged inside the framework consisting of a circular wire member g from which project four radial lengths of wire g1 adapted to pass through the downwardly depending arms b1, 01, Z1 and el of the framework as shown in Figu ures .l and 2 and receive thumb nuts g2 in order to hold the framework rigid.

It will thus be lseen that in order to insert the glasses (assuming the bulb is removed) it will merely Vbe necessary to unscrew the thumb nut g2 in the downwardly projecting arm b1 and then swing the arm b2 up to the position shown in dotted lines in Figure l. rlhis will leave one side of the framework open as will readily be understood. The for- Vward edges of the ledges?)3 on the arm b1 may be turned downwardly as shown at 3 in order to facilitate the insertion of the same under the edges of the glass discs when the arm b1 is swung downwardly.

'l1 he glass discs are provided at their centres with a downwardly depending flange f1 which may project downwardly for one half of the distance between the superposed glass plates for a purpose hereinafter described.

The glass discs f may, of course, be of any convenient shape, in the form shown they are octagonal, and they are preferably frosted on the underside. The bottom disc is plain as 'ill readily be understood, and the downwardly depending llano-es f1 at the cenire of the di ses leave pertures f2 of sufficient size to allow a ready insertion and withdrawal of the lamp bulb 7L which is mounted in the usual bayonet holder j carried by the bowl a.

Figure 3 shows the mounting of the holder j very clearly. ils shown in this iicure, the holder j is provided with a tube '7'1 down which the flexible leads to the holder pass, this tube jl being held in a tube all depending from the inside of the bowl o. llhe tube a2 is externally screw-threaded and is split as at a? at its free end to form a chuck to grip the tube j. rlhe chuck is contracted by means of a nut at which screws on to the free end of the tube a2, as will be readily understood. lt will thus be seen that by loosening the nut at the tube jl can be slidden into and out of the tube o2 in order to adjust the position of the bulb within the fitting so that it may be disposed at the most ei'iicient level.

To insert the lamp the lowermost plain disc is removed whereupon the bulb may be inserted from below through the apertures f2.

The downwardly depending -flanges f1 of the discs f will prevent any direct illumination reaching the eyes of the observer except when the fitting is viewed from a very acute angle and hence a soft and dilfused light will be obtained. Further it will be appreciated that with the hinged framework, as above described, the discs may be readily removed for cleaning or any other desired purposes.

A conical shield .7'2 may be arranged on the bulb holder to hide the parts inside the bowl a from view (see Figures l and According to a. modiication, instead of proifiding the discs f with the flanges f1 a shield may be provided around the bulb in order to prevent direct illumination. This shield may be of truncated cone form adapted to lit into the holes in the centre of the glass discs and may be made of mica or other suitable material. rl`he shield is suspended by light coil springs from a ring which is adapted to take about the cap of the electric light bulb so that the bulb may be removed easily.

The frame-work is preferably arranged so that it may be collapsed into small compass in order that the fitting may be stored within a small space. This may be done in many ways such as folding the framework, but one way which has been found very convenient is to form the diametrically opposite arms 7), (Z, c and c from a. single strip of metal.

'llhe centre ot each strip of metal is split as shown Z, ligure 3, and the two part-s eX- pz'zndcd in order that it may take about the tube ai on the bev-.fl ci. @ne of the two strips of metal which thus form the framework is stepped take about the other strip (sce `lligure inside the bowl a is arranged a separate conical plate m which is held on the tube a2 by means of a nut m1 which screws on te the lower end of the standard. '.l'he two strips above referred to lie in recesses m2 in the edge of the cone and the base so that they are correctly located by clamping the base plate to the base the cone. It will thus be `een that when it desired to collapse the raincworlz it is merely necessary to slacken ln nut 'm1 when the strips may be swung ouno into contact with one another wherepon the whole device may be packed flat as shown in Figure 2.

Gf cmu-se, the discs may, if desired, be slightly dished or of any other desired shape, and further more than f ur of the same may be provided. A suitable number of arms would, of course, be provided to support the discs sulliciently.

Clips may be provided on the ledges to hold the glasses in piace and, if desired, the gate arm instead of being hinged to the main framework may be slidably connected thereto r slidably and hingedly connected thereto.

ln the construction shown in Figures 6 and 7 it is not necessary to collapse the framework or to open the gate in order to remove the glasses. In this construction the device comprises two main arms r and s which are halved together at their centres. About the centres of the arms is a box t slotted, to receive the arms which are fastened therein in any suitable manner. rlhe box t is supported from the ceiling conveniently by an adjust able support, a portion of which is shown at 251. The arms r and s are provided with inwardly projecting ledges r1 and s1 on which the glass discs rest as in the construction illustrated in Figures l to 5. T he downwardly depending arms are, however, cutaway above each of the ledges as clearly shown at r2 and s2. This construction while gli/'ing an edective severe outline fitting will at the same time enable the glasses to be removed without collapsing the framework. 'lo remove the bottom glass the same is held between two of the arms, say at the point A. and the glass disc is pushed away from the operator, thereby causing' its rear edge to ride up the cut away portions r2 and s2. The forward edge of the glass disc can then be disengaged from the forward two ledges and the glass may be readily removed. This will readily be aplLSU preciated on reference to Figures 6 and 7 and more particularly to' Figure?. Of course, there are many other ways ofremoving the glasses by a suitable construction of the framework without collapsing the same, and it will be appreciated that these modifications maybe carried out without departing` from the spirit of this invention.

In the construction shown in Figure 8 the downwardly depending arms u are slotted as at u1 to receive the glasses f and one of the arms is hinged to the horizontal portion, a linlr or clip u2 being pro-vided taking into a slot as to hold the pivoted arm firm.

It will be appreciated that the above two embodiments which have been described in detail are only illustrations of the invention and these embodiments may be modified without depart-ing from the spirit of this invention. Y

I claim l. An electric lamp fitting comprising a plurality of discs of translucent material, a framework to support the same, one of the legs of said framework being hingedly mount ed so that it can be swung out of position to allow easy removal of said discs and a strainer inside said framework to strengthen the same.

2. An. electric lamp fitting comprising a 6. An electric lamp fitting comprising a plurality of discs of translucent material, a supporting member for the fitting, strips of material split at the centre to take about said supporting member and depending downwardly to support said discs of translucent material and a lamp holder adjustably mounted in said supporting member, part of Y one of said strips being hinged to the remainder in order that the same may be swung.

in said supporting member, means for positively locating` said strips in posit-ion on said supporting member, part of one of said strips being hinged to the remainder in order that the same may be swung out of position to allow easy removal of the said discs.

in testimony whereof I have signed my name to this specication.

SDNEY VILLIAM HAMLYN.

plurality of discs of translucentmaterial, a

supporting member for the fitting, strips of material split at the centre to take about said ysupporting member and depending downwardly to support said discs of translucent material and a lamp holder ad]- ustably mounted in saidvsupporting member.

3. An electric lamp fitting comprising a pluralityv of discs of translucent material, a supporting member for the fitting, strips of material split at the centre to take about said supporting member and depending downwardly to support said discs of translucent material, means for positively locating said strips in position on said supporting member and a lamp holder adjustably mounted in said supporting member.

4. An electric lamp fitting comprising a plurality of discs of translucent material, a supporting member for the fitting, strips of material split at the centre to take about said supporting member and depending downwardly, ledges on said strips to support said discs and a lamp holder adjustably mounted in said supporting member.

5. An electric lamp fitting comprising a plurality of Adiscs of translucent material, a supporting member for the fitting, strips of material split at the centre to take about said supporting member and depending downwardly, ledges on said strips to support said discs and a lamp holder adjustably mounted in said supporting member, means for positively locating said strips in position on said supporting member.

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