William Sugg & Co

The Windsor Lamp

& Other Lanterns designed for the gas mantle

(This is an element of ‘Lighting – Street Lamps‘)

Windsor 1906 cat cover 50
The iconic Windsor Lamp in 1906, 8 years after it was introduced

The 1898 Windsor lamp was the first lantern designed specifically for use with the gas mantle as opposed to open flame. In the early years the Windsor was fitted with upright mantle burners, finally converting to the inverted burner in the early years of the 20th century. We believe that the lamp was named after the place in which it was first used – the Royal Borough of Windsor on Thames. This applies to many, if not all of William Sugg’s most popular lamps.

The extraordinary success of the Windsor lamp is indicated by the statement on this catalogue cover that “50,000 of our ‘Windsor’ Lamps are now in use”. Every manufacturer eventually produced a similar fixture and right up to date, now more than 100 years after this catalogue, the Windsor Lamp is still manufactured by Sugg Lighting, with a version still available ‘in gas’! How many Windsor lamps must have been produced in total?

The Windsor model illustrated above is the first design with both a steeper ‘tent’ or roof than is familiar today and a scalloped ‘cap’. It is also shown here with ‘William Sugg’s Patent Combined Cast Iron Base and Ball Trap Door, with Lever Cock, fitted with Sugg’s Anti-vibrating Incandescent Gas Burner, Mantle and Glass Mantle Protector’. The earliest mantles were so fragile that these burners were provided with a form of spring suspension to absorb vibration from traffic.

Produced in 3 sizes, 14″, 16″ and 18″ (this is the width of the lantern at its widest point) these sizes are effectively the common standard for street lighting and you will find earlier lamps are often of a similar size – before the introduction of the large lanterns described in that section. This particular variant in 1906 is priced from 40s 9d (£2.04) to 71s 3d (£3.56) from the smallest with an 85 candle burner to the largest with two 5 feet consumption burners producing 280 candles. The catalogue illustrates this same lantern sold without a burner for 34/- (£1.70) or, with a standard 4-legged ‘frog’ in place of the cast iron base and no ball trap door for just 28/- (£1.40)!

 Windsor set cut 25 25 550

These four Windsor lanterns from the same catalogue have an upright mantle with a patent anti-vibrator designed to reduce mantle breakage. The two on the left have ‘patent ball traps’ in the bases indicating that these lamps are still lit by a lamplighter. The two on the right have permanent pilots so that the lamplighter only had to turn the tap or lever. Not only did this reduce the time taken lighting the lamps but significantly reduced the damage caused by inserting the lamplighter’s torch inside the lantern – in a hurry!

Windsor section air movement w. inverted bnr 500 ht  Windsor section showing air flows 2 500 ht

The ‘ball trap’ is an ingenious but simple means of sealing the base but allowing the lamplighter’s torch to be pushed up inside the lamp. A ball sits in and seals the lighting aperture until the end of the lamplighter’s torch pushes it up and it rolls along a ‘track’ and then returns when the torch is removed. The illustration on the right above shows one type of lamplighter’s torch inserted through the ball trap to ignite the upright burner.

The section drawings also show the elements of the vertical balanced flue arrangement which made the Windsor such a good gas lamp. The body of the lantern is ‘sealed’ either by the ball trap or in later lamps the base is glazed with two glass ‘slips’ either side of a central copper channel through which the gas burner was fed or supported depending upon the burner. The heat and the products of combustion pass up the tapered chimney from the burner and pass out of the lamp under the ‘cap’ which protects the chimney from the rain. The air for combustion is drawn in under the bottom edge of the ‘ogee’ which is the spinning that sits on the ‘tent’ or roof of the lantern passing down around the outside of the chimney and then over the edge of the reflector which is smaller than the frame of the body and so into the body of the lamp. Both of the illustrations above show the internal air movement.

This arrangement ensured that there was no undue air movement, irrespective of the wind conditions, because the combustion air and the products of combustion both entered and left the lamp close together.
The left hand section drawing also shows how in the later inverted burner model the burner was positioned and fed through one corner of the reflector with the airchamber and main injector high up in the lamp.
The ‘tent’ is removable and the reflector is attached to it by means of bent copper tags in each corner. The burner &/or the superheater and the formed piece of burner tube slide onto the nose of the airchamber for ease of removal.

 Windsor x sect SUGG110 260 px w  Windsor with Multi-Ray 260 w

These two illustrations show the Windsor lamp with the later inverted mantle burner and one of a number of later devices to improve lighting performance, the ‘Multiray’ reflector.

 Public Ltg Square Lamps leaflet 1 550 Public Ltg Square Lamps leaflet 2 550 Public Ltg Square Lamps leaflet 3 550 Public Ltg Square Lamps leaflet 4 550

This small booklet printed some 30 years later than the 1906 catalogue pictured at the beginning of this section illustrates how the Windsor has developed over a quarter of a century showing the whole range of Windsor lamps, special burners and devices to improve the performance of existing lamps available in the late 1930’s. You will see that there are just 3 sizes, 14″, 16″ and 18″ (across the widest point) and generally sized ‘according to the number of mantles’. In fact they offered any size with the smallest 1 lt burner but the larger burners required the larger lamp to withstand the greater amount of heat.

Whereas the majority of lamps were post mounted a significant number were also mounted on wall brackets as shown at the top of the leaflet and were called ‘Bracket Frame Type’. By this date the ball trap and lamplighter have both been replaced by a clockwork time clock and permanent pilot.

One model has disappeared altogether from this leaflet and that is the suspension model which hung from a cup and ball swivel arrangement with a down drop to immediately above the ‘cap’ as the ‘spike’ was removed. The supply ran down the outside of the tent and then joined the same externally ‘strongly soldered’ pipe running down one rib to the cast brass body piece shown on the ‘bracket’ model. This type of suspension had been superceded by the Rochester and Littleton suspension lamps which provided shadowless illumination as they have no body frames. See Rochester & Littleton.

Lamplighter Hyde Park 275
If you think you know your Windsor lamps, what is wrong with this picture?

The answer of course is that this Windsor in Hyde Park has a glazed base which would never have been lit by a lamplighter. As already described and illustrated above, the lamp would have had a ball trap for the lighting torch and of course in bad weather it could be very difficult to light a gas lamp with the door open. Although a ladder was used by some lamplighters it was mainly for maintenance work. The aim of a lamplighter was to get round his route as quickly as possible and opening the door from a ladder is not in the schedule. After the pilot had been introduced to ignite the burner, the lamplighter still had to turn the lamp on and off and became adept at using a pole with a hook to turn the lever cock on or off whilst riding past on a bicycle!

List 12 April 1927 Reprint 1929 Pg 57 550w


Copyright © Chris Sugg 2006-13

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Site Background & Header

The background to the site is a modern picture of Westminster, the ‘home’ of William Sugg for so many years. It was taken from the roof of The House of Lords during a visit by the Heritage Group of CIBSE in 2004 and centres on Westminster Abbey. The header carries a woodcut of ‘Vincent Works’, the Sugg factory, which might well have been visible from this vantage point. William used this on one of his letter heads. The first and oldest logo also shows the intimate connection with Westminster as it carries the Westminster portcullis with the inscription ‘en avant’ – ‘in advance’. The second logo replaced the earlier one around 1920 and was used right the way through the century until the ‘modern’ era when the ‘flame’ logo was applied to the new era of gas heating equipment with the new factory in Crawley.

14 Responses

  1. Hello, I’m looking to buy one Windsor gaslamp size Court, however i am told that it is about of production. Do you have any suggestion where i might find one of this lamp?
    I appreciate your reply

    1. Filip. The name Court does not apply to any William Sugg lamp. Maybe you have seen a lamp by another manufacturer? The Windsor lamps are known by the width at the widest point so that original street lamps are 14″, 16″ or 18″. If you are looking for a more domestic size – judging by the name – you could call Sugg Lighting who do manufacture smaller lamps. Contact details at https://williamsugghistory.co.uk/?page_id=20

    1. Excellent link to the real world of street lighting in the 1930’s when gas was still very widely used and interesting comparison with values of money between then and 2016.

    1. Colin – not sure about a pie but you should ask Sugg Lighting. This is William Sugg History. Go to contacts or google.

  2. Hi Chris, I have 2 Windsor style gas lamps with double inverted mantle burners. They were purchased second hand, so I know no history. I expect a decade or 2 old. The mantle bases are threaded to screw onto the burner mount. I am trying to source some mantles for their use. The only possibly suitable one I have found on the net – with a thread- seems to be the Veritas Alpha Mantle M4432 – which seems to be used in a caravan lamp? I can send photos. My mantle base thread internal diameter is 20.7mm with 5 full threads, but thread form unknown. Kind Regards Phil (Australia).

    1. Hi Phil, I will send you an email with some illustrations of the mantle/nozzle combinations particularly used in the UK but also worldwide. Interestingly, the Australian Gas Association developed a threaded nozzle for a mantle with a matching ring that screwed the mantle on to prevent any gas/air mixture escaping between the nozzle and mantle as in a conventional arrangement in which the mantle hangs loosely on 3 small lugs on the nozzle. If you send me some pictures I may be able to advise you more clearly.

  3. Hello Chris,
    We have 2 Windsor lamps outside our house in Melbourne, Australia. They both use No 2 standard ring inverted mantles. One lamp has 4 burners, and the other has 3 burners. I can source mantles relatively easily, but I have not been able to find burner nozzles. The burner nozzles are marked SUGG2. Can you supply ceramic burner nozzles for these lamps? I have used all my spares.

    1. Hello Geoff,
      Yes, I do have some Sugg No.2 nozzles. Generally they last a very long time unless knocked so let me know how many you would like and I will work out how to send them in the current lockdown situation. A photo of your installation to add to my website worldwide pictures would be wonderful. A little history of how they came to you would be great to add!
      Kind regards,

    1. I have sent you an email – your URL has been compromised

      Following some correspondence it is clear that this company specialises in soft mantles as used in ‘camping’ lamps.

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