Still available from CU
Phosco in 2007, the P107 post-top lantern has be a popular seller for the
Company for many years. Availible for use with either GLS, MBF, SON, or CMD
lamps, the P107 can supplied with, or without control
gear. There are other options available too, such as
clear or opal cones, 12" or 24" diameter canopies
(P107/12 and P107/24), and various paint finishes. Like
other post top lanterns from CU Phosco, the P107 can
be supplied with 'Duoptic' refractors for asymmetrical
distribution should it be a requirement of the customer.
The
lantern in the collection is a remote gear version that
burns a 35w SOX lamp in the cap-up poistion. The lantern
also incorporates two 'stacked' Duoptic refractor rings,
to control the distribution from the vertically mounted
sodium lamp. The lantern with its 24" aluminum
canopy is in very good condition and came from Woodlands
Grove in Edinburgh on 9th March 2007, where it and was
resuced along with several others by fellow collector
John Thompson, who happened to be passing by
when contractors were removing these lanterns as part
of the City's PFI street lighting renewal scheme. John
has kindly passed most of these lanterns on to other
collectors, including myself; so many thanks John.
A
side view of the Edinburgh P107 lantern rescued by John
Thompson. The lantern is in good condition, but will
need a replacement clear cone; as can be seen, the original
has gone 'milky' at the base. Hopefully, the mobile
phone gives some idea as to the physical dimensions
of the lantern.
Looking down
on the P107's 24" diameter aluminium spun canopy,
we can see that it is unmarked and in very good condition;
thankfully, it hasn't been drilled for a two-part photocell
detector.
Unscrewing the plastic securing
ring allows for the removal of the thin aluminium canopy.
The screw hole through the canopy looks to have been
deliberately elongated, probably because the canopy
didn't quite centralise when it was originally fitted
to the lantern?
With the canopy removed,
we can see the two spines that support the lampholder
assembly and on to which the glass refractor rings are
mounted. The canopy fixing screw has been put back into
the lantern to show where it screws into.
With the canopy removed
we can see the way in which the two 'stacked' refractor
rings have been arranged around the 35w SOX lamp in
an effort to give the lantern some sort of asymmetrical
light distribution. Clearly this was something that
Edinburgh's lighting engineers must have requested,
as I've seen other SOX lamped P107s that have single
refractors.
Looking up under the refractors
we can see the spring-loaded hooks that hold them into
place and the cork gaskets fitted between the glass
and the mountings rings.
Looking down on the top of the lantern's
lampholder assembly show the mounting bridges onto which
the the lampholder and the refractors are fixed.
The base of the unit showing the
aluminium die-cast column-top/spigot receptor, which
uses three Allen grub screws to secure the lantern to
the column. The word 'Road' is cast into the unit and
indicates to the lighting engineer which side of the
lantern needs to face the roadway to obtain the
correct alignment.
No image of an in-service P107/24 available
Awaiting image of a P107/24
As
a comparison, here's a P107/12 with the smaller 12"diameter
canopy; this has an opal bowl and was photographed in
Chester in April 2007 mounted onto a much older ESLA
No44 column.
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