IMPROVEMENTS IN SUPPORTS FOR THE SHADES AND BULBS OF INCANDESCENT ELECTRIC LAMPS
Year: 1885

page_text: лисацаевсень десtric Lamps.
I ALFRED SWAN of Low Fell, Gateshead in the County of Durham Engineer
do hereby declare the nature of my said Invention for "IMPROVEMENTS IN
SUPPORTS FOR THE SHADES AND BULBS OF INCANDESCENT ELECTRIC LAMPS
"to bo
as follows:-
My Invention has for its object to provide secure simple and efficient supports
for the shades and bulbs of incandescent electric lamps.
According to my Invention I make the shade support in two parts consisting of
an outer and an inner tube the outer tube having a splayed out or conical part and
the inner tube being provided with corresponding arms between which splayed out
or conical part and arms the shade is held. The arms are made longer than has
hitherto been the case to better support the shade and to enable the shade to be-
inserted in place One or more of the said arms is or are made to hinge and is or are
furnished with a tail-piece which straightens out the arm or each arm into its or
their position for supporting the shade when the inner tube is drawn into the
outer tube which is effected by a screw in the inner tube with which a screwed
ring on the bulb holder engages so that as the said ring is screwed in the flange of
the holder bears on the edge of the outer tube and the inner tube is drawn
inwards to cause its arms to secure the shade between themselves and the splayed
out or conical part on the outer tube. This mode of screwing up to secure the
parts may be used with the holders for the bulbs where the fastening of tho parts
of the bulb holder is effected by a collar which connects the said parts by means of
pins and bayonet joint slots and grooves the screwed ring in this case being
screwed on a thread on the collar and pressing on the part or each of the parts
and forcing the pin or pins into tight contact with the wedge of the groove or
grooves and the wedge of the ring against the projecting head or flange of the
holder. The two tubes of the shade holder are prevented from leaving each other
by a pin and slot connection. The foregoing arrangement may be used with the
jointed arm or arms or with all the arms rigid. In order to support or assist in
supporting the weight of the lamp when it is a hanging lamp without undue
strain on the terminal wires, I form or fix a cross bar or piece (preferably of an
insulating material) in the holder or nozzle piece of the holder and I pass the lead
wires on either side and knot them together beneath so that this knotted portion
supports or assists in supporting the weight of the lamp.

page_text: I ALFRED SWAN of Low Fell Gateshead in the County of Durham Engineer do
hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:
My Invention has for its object to provide secure simple and efficient supports
for the shades and bulbs of incandescent electric lamps. I will describe my
Invention with reference to the accompanying drawings whereon figure 1 is an
elevation and Figure 2 a plan of a holder constructed according to my invention
I make the shade support in two parts consisting of an outer tube A and an inner
tube B the outer tube having a splayed out or conical or bearing part a and the
inner tube being provided with corresponding arms b between which splayed out
or conical part and arms, the shade is held as shown in Figure 1. The arms
should be made long enough to give a secure hold to support the shade, and to
enable the shade to be inserted in place. One or more of the said arms is or are
made to hinge (in the drawing all the arms are shewn as being hinged) and is or
are furnished with a tail piece 6ª which straightens out the arm or each arm into
its or their position for supporting the shade when the tube A is screwed to the
fixing position on the outer tube which is effected by a screw on the inner tube
with which a screw in the outer tube (which forms part of or is affixed to or forms
part of the bulb holder) engages Figure 3 shews the arms b raised ready for the
shade to be put in place with the outer tube screwed into the position shown to
allow of the arms being so raised Figure 1 shews the outer tube screwed into the
position in which its conical or bearing part a has borne on the tail pieces b³ and
forced the arms down so that the shade is held between the arms and the said
conical or bearing part The fastening of the part d of the bulb holder to the part
formed with or carrying the tube A is effected by means of pins in the part to
which A is fixed or to which it forms a portion and bayonet joint slots and grooves
in the part d, the screwed ring c being screwed into such a position as by pressing
on the edge of the part d to force the pin or pins into tight contact with the edge
of the groove or grooves and the edge of the ring against the projecting head or
flange of the holder-The foregoing arrangement may be used with the jointed
arm or arms or with all the arms rigid.-In order to support or assist in supporting
the weight of the lamp when it is a banging lamp without undue strain on the
terminal wires, I use the arrangement shewn in Figure 4-1 form or fix a cross
bar or piece (preferably of an insulating material) e in the holder or nozzle piece
of the holder (indicated at f) and I pass the lead wires g on either side and knot
them together beneath so that this knotted portion (shewn at h) supports or assists
in supporting the weight of the lamp.
Having now described and particularly ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
First. In the supports of incandescent lamps the combination of screwed tubes,
a conical or herring niece, and arms. (hinged or rigid or a combination of both)

page_text: between which the shade or globe is held substantially as hereinbefore described
and illustrated by Figures 1, 2 and 3 of the accompanying drawings.
Second. For securing the parts of the holders of incandescent lamps together
the combination of pins on one part and bayonet joint grooves on the other part
and a screwed ring or its equivalent running on a screw thread, on the one part
and bearing on the flange or edge of the other part, substantially as and for
the purpose hereiubefore described and illustrated by Figures 1 and 3 of the
accompanying drawings.
Third. The arrangement and combination of parts herein before described and
illustrated in Figures 1, 2 and 3 of the accompanying drawings for the purpose
described.
Fourth. The means for supporting or assisting in supporting an incandescent
electric lamp hereinbefore described and illustrated by Figure 4 of the accom-
panying drawings.
n .