Off Judds Lane, Rowley Green, Coventry, West Midlands Installed around the perimeter of a large warehouse (now split into individual industrial units) are a number of Revo 'Horizon' lanterns dating back to the 1960s, which appear to have fallen into redundancy, but would have run 250 - 400 Watt mercury vapour lamps (of the medium pressure MA type originally, and later, the high pressure MB type) when in use - the 400 Watt size being the more likely candidate of the two wattages. The installations are all in poor condition, with many of the lanterns suffering varying amounts of damage to their glass refractor bowls.
The first example to be seen is a 25 ft Stanton 8 concrete column with an F-type bracket.
The concrete has spalled at either end of the bracket, revealing the internal steel conduit.
The lantern has suffered heavy vandalism, with the bowl having been lost completely, the porcelain lampholder having been damaged, and only the internal metal support wires of the lamp remaining.
The inspection door is missing, allowing the internal wiring, and lamp control gear, to be seen.
Although the front stamp on the Philips ballast has worn away in parts, enough detail remains to determine that it would run a 400 Watt lamp.
Turning 180 degrees, the first of several wall-mounted Horizons came into view.
Approximately half of the bowl still remains here, although the lamp's outer bulb is missing, allowing the arc tube to be seen.
Another example was to be found further along the building. The entire bowl was missing here, and only a small portion of the lamp remained.
A conduit housing the supply cables to the lantern passes between the bracket and the point where the cables pass through the wall - presumably, the lamp control gear was (and may still be) attached to the wall on the other side of the brickwork.
A corner-mounted example was positioned at a section of the building that saw a change in wall height.
Nothing remained in this lantern at all, with the internal components having been stripped out.
On the next wall was this equally forlorn-looking lantern. This part of the building could be a later extension, with the bracket re-used but rewired in Mineral-Insulated cable, rather than conduit.
Turning another corner, a second column-mounted lantern was to be seen.
The bracket here too had spalled heavily.
Remarkably, this Horizon was still fully intact.
The door here was also missing, with the ballast appearing to have been removed deliberately.
The final Horizon was also column-mounted.
This bracket was also in a bad way at its connection with the column.
The bowl had swung open, and a small area towards the back was broken. The 400 Watt lamp looks rather oversized for the amount of space available within the lantern.
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