With this month’s edition of Flat Living focussing on Listed and Historic Buildings, we felt it was a good opportunity to revisit classic designs of lift through the ages, as many of the designs can still be seen in our major cities today.
Early Years
Whilst there are numerous ideas of the first lifts used by man, with hemp rope devices being pulled by oxen an image frequently conjured up, the modern passenger lift has its roots in more recent history.
The screw drive system was utilised for the first time in a lift system in 1793 by Ivan Kulibin at the Winter Palace, St Petersburg. More remarkable is that the principal of the drive system is still used in modern access platform lifts, some 230 years later.
Elisha Otis is credited with developing the modern lift (elevator) with his invention of the safety gear, an automated braking system, which he first demonstrated at a New York exposition in 1854. The first of these passenger elevators was installed in 1857 at 488 Broadway. The provision of a safety device to stop the lift car if the ropes failed revolutionised the lift industry and in turn, paved the way to high rise construction so familiar in today’s skyline.
Modern lift equipment has improved upon the original design and fortunately with the safety factors of ropes/machines now far greater than before, it is a very rare occurrence to have the safety gear deployed in the event of emergency.
However, with the common ancestors of today’s lifts dating back over 200 years, it is no surprise to find lifts of all shapes and sizes in some of the most recognisable buildings of the world.
Classic Design
When thinking of older lift designs, both London and Paris come to mind, with the stairwell lift, within a mesh shaft structure and with open picket (lattice) gates. There are some pristine examples of these still found within mansion blocks in our major cities (though a great number have lost the originality of the lift cars, with 1960 Formica overlay).
Our article in Flat Living E45 (also seen in our case study) focussed on a particularly well-preserved example of this classic design within a West London property, with a glazed lift car adding to the Art Deco design.
We were (and remain) very proud to be able to sympathetically refurbish that lift, with a client who understood the importance of retaining the character of the building, whilst letting us improve the health and safety of the system for future operatives.
The HSE (understandably) want to see the removal of these lattice gates due to the serious risk they can pose. However, English Heritage (equally understandably) would like to preserve the character of these lifts wherever possible, as they are key to the design of these buildings, often forming part of a lightwell to common areas.
We are well versed at finding a balance between these two opposing viewpoints to maximise safety whilst retaining character, an art we want to retain in the Lift Industry!
1960’s Housing Boom
Whilst to some, this era is relatively modern history; there are hundreds of post-war buildings that are now of pensionable age and the lift equipment within these buildings is creaking and groaning commensurately.
We have been involved in many of these types of buildings in recent years; providing modern lift service to residents who have benefitted from improved levels of service (including automated door service, smoother operational performance and energy efficiency).
We will be providing a case study for one such project in the April edition of Flat-Living to offer context on technological changes from then to now.
Unconventional – but Effective
The Paternoster is a now outmoded lift system from the late nineteenth century, where a ‘cyclic elevator’ provided service to a building. The system is in essence a chain of lift cars linked together, which slowly travel the length of the lift shaft (from bottom to top) only to move horizontally at the top of the building to then descend in the neighbouring shaft. All the while, dozens of identical lift cars make the same journey, meaning a continuous arrival of lift cars at each floor, permitting the public to hop into the nearest cabin in their direction of travel, getting out at their required floor (think of London’s Circle Line on a continuous loop).
Originally installed in Oriel Chambers in Liverpool (circa 1868), minor design alterations occurred before the Paternoster was adopted into public use and thereafter seen frequently installed throughout the first half of the 20th century. The design gained in popularity because despite the slow speed of each individual car (approximately 1 foot per second – enabling a step on/off to be achieved in travel), the collective number of cars per shaft enabled a faster flow of passengers in a public building (much like escalators).
The Arts Tower in Sheffield had a 22-storey version of the Paternoster installed (the highest in Europe), but simple calculations would indicate at an approximate height of 70m to the top floor of the building, it would take nearly 4 minutes in the lift car to travel from bottom to top floors!
However, the design suffered from a number of high-profile accidents and due to the constant movement of the cabins, they pose risk to anyone of limited mobility (children, elderly and disabled passengers being at most risk) when boarding/alighting the cabin. Subsequently, they are no longer permitted for installation and only very few now survive in operational service.
A modern example of the design is still seen in St Louis’ Gateway Arch, where a lift system operates within the enormous structure.
Under Pressure
Within a number of UK cities, the installation of hydraulic power networks was established at the end of the nineteenth century. Hundreds of miles of high pressure cast iron hydraulic pipes pushed millions of gallons of water each week around the various networks.
It provided a cleaner source of power than the equivalent steam engines and in London alone it was utilised by approximately 8,000 lifts and cranes, using hydraulic pressures to drive pistons upwards, whilst releasing of the pressure would enable them to return to the lower floors.
Electric pumps began to replace the steam engines originally installed, but the system was finally decommissioned in 1977.
However, hydraulic lifts survive and operate using oil reservoirs (rather than mains water pressure), with self-contained pumps within lift motor rooms. The advent of the MRL (machine room less) lift has seen the decline in hydraulic lifts being installed, but there remains a time and place for their installation. Whilst slow in comparison to modern electric passenger lifts, hydraulic units are often found moving heavy loads over shorter distances, for example car park lifts are often hydraulic in design.
We are available to support you with any queries you may have relating to lifts of varying ages within your property.
You can contact the ARDENT team via their website or by emailing [email protected].
