Improvements in Globes or Shades for Lamps.
Year: 1899

page_text: Date of Application, 2nd Mar., 1899-Accepted, 15th July, 1899
DI DUIFICATION.
Improvements in Globes or Shades for Lamps.
We, ALFRED LEPEL, Mechanical Engineer, of 7, Luisen Strasse, Berlin, and FRITZ ·
SCHULTZE, Architect, of 2, Trabener Strasse, Grunewald, near Berlin, both in the
Empire of Germany, do hereby declare the nature of this invention and in what
nanner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
This invention relates to improvements in globes or shades for lamps.
The globe illustrated in the accompanying drawings has the characteristic feature
of opening below in order to obtain a better downward radiation of the light enclosed
by it. However, this property is not the only practical purpose of the present globe,
as its form also serves to satisfy claims which may be raised from an esthetic point
of view.
Figure 1 of the drawings represents the globe arranged for a suspended lamp.
Figure 2 shows the globe opened.
Figure 3 shows, on a larger scale, the connection of the lower half of the globe
with the upper half, as at in Figure 2.
4
Figure 3 is a part of Figure 3 seen from above.
Figure 4 is a front view and Figure 5 a section of the place where the open globe
stops, namely at x in Figure 2.
Figure 6 shows the connection of a part of the upper part of the globe with the
top.
Figure 7 shows a modification of Figure 6, the upper half of the globe being in its
details turnable in sector-form round the top.
Figure 8 shows the same form with the difference of the sectors being represented
open.
Figure 9 shows the globe modified for table-lamps, closed, and Figure, 10 shows
the same opened.
Figure 11 is another modification and
Figure 12 is a view of sector seen on Figures 9 and 10.
As shown by Figures 1 and 2, the globe consists of single ball-surface sectors, viz.
six sectors a for the upper half, and six sectors for the lower half. It is not
necessary of course that the globe must be composed exactly of twelve sectors, as it
may also be constructed of more or less than twelve parts, although in twelve parts
is the most suitable arrangement.
The upper six sectors are held together by the top d. Figure 6 shows the simple
manner in which this is effected. The lower six sectors b, however, that is to say
each individual sector, turns on the lower edge of the respective upper sector a, as
shown by Figure 3. According to this figure the inner rin a¹ of the upper sectors a
is provided with two oval holes c through which passes a short rod f with a ball e at
the upper end, and a nut at the lower end. By means of this nut g or a similar
fastening device, the upper rim 61 of the lower sector b is held. The ball e and the
oval hole c (see also Figure 3) enable the lower sector to take up a slanting
position, as indicated by dotted lines, to the upper sector. Aty in Figure 2 this
slanting position is shown. Two such ball-bearings are provided for every lower
ED

page_text: sector b. In order to cover the open part, a round ledge is suitably arranged at the
lower rim of the upper sectors, and a covering-ledge at the lower sectors. On this
ledge weights i may be provided which serve to re-conduct the sectors into their
original closed position; but in most cases such weights will be unnecessary.
As will be seen by comparing Figures 1 and 2, the lower part of the globe opens 5
when the lamp is pulled down by the ring . This is done in the following manner.
The lamp is arranged as usual in a lyre which, as known, terminates at 111, in the
gas supply-pipe m. When the lyre carrying the lamp L is pulled down by the ring,
a ring p situated round the lyre, meets the inner edge of the ball-sectors and
presses the latter down by gliding along on the inner edge of the sectors. This takes 1
place until the ring p meets the lower rim r of the sectors, as shown by Figure 2.
Thus the sectors b have gradually opened and the light of the lamp freely radiates
downward between the sectors. Figures 4 and 5 show to a larger scale the part x
of Figure 2 where the ring p places itself on the point r of the sector b. This ring p
is fastened to the rods of the lyre and consequently goes up and down with the saine.
Now the lamp can be pulled down together with the opened globe, and the globe may
be opened or closed in any position of the lamp.
According to this arrangement the lamp can only project as far out of the globe as
shown by Figure 2. In many cases it is desirable however to let the lamp project
farther and to use it entirely without the globe. In this case the ring p must be
interrupted at those places where the sectors end, as shown by Figure 4. Thus the
lamp can be pulled down by itself without the globe. But in order to avoid the
sectors coming together with their points over the upper half of the lamp, these
which
ends must be kept apart. This is done by the aid of a second, but full ring q
lies loosely on the lower ring p and is therefore not connected with the lyre rods b.
It will be easily seen by Figure 5, that, when the point of the sectors has passed
through the parted slit of the ring p, the loose ring q places itself on and thus
prevents the meeting of the lower sector-ends. In pushing the lamp upwards
attention must be paid that the points r of the sectors pass through the spaces of the
ring p. In pushing the lamp still further up the loose ring q is taken up with the
ring p, and the sectors close, as shown by Figure 1.
Figures 7 and 8 show a modification, consisting in arranging that the lower
sectors 6 do not swing round the equator of the ball, but that the movement takes
place at the upper edge of the upper sectors. In this case both sectors are of course
firmly connected with each other where they meet with their broad edges, so that the
globe only consists of six opening sectors. The support can be effected, as shown
by Figures 7 and 8, in the same inanner by means of ball-joints, as in Figure 3; but
as the upper edge of the sectors is pretty narrow, the known hinge-bands may be
used.
This arrangement can be used for table-lamps as well as for suspended lamps, but
of course with the difference that the ball-shaped globe moves up while the lamp
remains in its place. In Figures 9 and 10 this arrangement is shown in closed and
open position respectively. According to Figure 9 the lamp L is surrounded by a
spherical globe composed of wires. The lower half of this globe is suitably con-
structed of six sectors of the form shown by Figure 12, or the like arranged on a
ring or connected with the upper half of the globe. As also shown by Figure 12,
every sector is composed of the two side wires 8 8, the upper wire s', and the lower
wires. Between the upper wire 8 and the lower wire s an intermediate wire may
he arranged for the better support. The space between the wires is suitably covered
with cloth. A wire b, with two knees t and t¹, reaches from the upper wire 81 to the
lower wire s. The ring o on which, in ordinary lamps, the globe is placed, also
serves to carry a ring p against which the wires are leaning when the globe is
pushed up. If the globe a is lifted in any other way than that described, the wires b
slide along on the ring p, and through this the lower sectors are opened. At about
half the height the knee t can place itself on the ring p in which case it serves as a
rest. If the globe is pushed up still higher, the lower part of the wire breaching
from t to t¹ glides past the ring p until another rest places itself on the ring p

page_text: resulting in the position indicated by Figure 10. The ring p only consists of six
parts which leave a small space between each other. If therefore the globe is to be
closed again, it is turned with its rests t¹ on the ring p until each of the spaces for
every sector stands opposite to the wires b. Then the rests t¹, and later also the
rests t, loose their hold on the ring-pieces p, and the globe can be pulled down, so
that the sectors close, until the position indicated by Figure 9 is rearrived at.
Figure 11 shows a modification in which the upper half of the globe a remains
immovable, while the lower half consists of sectors as shewn in Figure 12. Figure 11
also shows how such an arrangement may be applied to existing lamps. In this case
a ring or a plate vis in a suitable manner fastened, say immediately under the lamp-
burner proper; this plate carries, by means of some wires 2, the ring p which, as
will at once be seen by Figure 11, supports the whole arrangement quite
independently from the lamp I.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a spherical, or nearly spherical globe for lamps the lower half of the globe,
or the whole of it consisting of a number of sectors arranging themselves automatically
to each other, substantially as and for the purpose set forth.
2. In a lamp-globe consisting of a number of sectors, the lower point of the latter
provided with hooks r, substantially as and for the purpose set forth.
3. In a lamp-globe consisting of a number of sectors of which the lower points are
provided with hooks, the ring p being divided for the said points to pass through,
and on the divided ring p a full ring q put on loosely, substantially as and for the
purpose set forth.
4. In a lamp-globe consisting of sectors provided with hooks and with the ring u,
the arrangement in the case of table-lamps, that the lower sectors, (or the said ring u
from which the lower sector are suspended), are lifted up until the rests t or t¹
engage with the ring p; substantially as, and for the purpose set forth.
Dated the Und day at Adorah 1200
Dated the und
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.