Amazing history about floor springs - You must know before selling them

Description: Are you going to make a new business in locking market?! And the product you choose to sell is floor springs?! Let’s find the history of them to know more about it and love it in your own way!

Overall and main types of floor springs in Italian locking market

Door closers perform a number of useful functions for life. It will serve faithfully for many years if properly maintained. They save energy by minimising heat loss, prevent accidents by ensuring heavy doors don’t slam shut suddenly. And save aid security by ensuring that doors latch automatically and prevent the spread of fire.

Traditional floor springs and door closers become victims of their own success. They are such simple, effective and reliable devices that we only tend to notice them if they fail. However, they are part of the character and significance of the interior. Many are over 100 years old of historic significance in their own right.

Common types

There are three main types of door closers in locking market. There are surface-mounted overhead or transom door closers in header or transom of door frame. The most reliable and long lasting of all, the floor-mounted door spring trade as floor springs.

Picture 1: There are many types and many companies supplying floor springs in locking market now

Surface-mounted floor springs such as the Briton is still common in old buildings. People designed them for doors that only open one way and are known as single-action door closers. Transom closers are suitable for doors that can open either inward or outward. So that, they are often collectively referred to as double-action door closers. There are also single-action variants of both the transom floor springs which are mainly available on entrance doors.

Significant way that floor springs appeared in the past

Door closers probably appeared soon after door hinges. It is easy to imagine a series of pulleys, a weight and a length of twine used in combination to automate the closing of a door.

One of the earliest documented inventions for a door opening and closing device was from Heron of Alexandria. People usually call it as c10-70 AD. This ingenious mechanism used heat, pulleys and pneumatics to automate the opening of temple doors.

In the UK, all manner of varieties of floor springs have appeared dating from the 17th and 18th centuries. However all those produced since the advent of the Industrial Revolution have used some sort of spring device to store the energy produced. They did it when the door is in open status so that it closes again.

Picture 2: Floor springs first appeared in England from 17th century

However, it was not until the late 19th and early 20th centuries that floor springs as we know them. They were reliable enough to become standard fittings on high traffic doors throughout the world.

More types of floor springs renovation

Mr Smith invented an early door closing device in 1770 at his premises at 69 Princes Street, London. Indeed, this is laying the foundations for one of the most successful companies, Archibald Smith and Stevens. In the early 19th century a succession of developments are recorded and patented. Early floor springs used a pneumatic piston, much like a bicycle pump. Although some of them may have used a second set of springs to counter the force stored in the first.

As well as conventional cylindrical springs, some early 19th-century examples continued to use flat clock-type coil springs, and there are a few examples which used leaf springs.

Apart from pneumatic check, springs made in the 19th century tend to be simpler than the early examples. It appeared with fewer moving parts. Cylindrical floor springs predominated, mostly working in tension. However, at this moment, compression springs are not uncommon.

Common conservation about floor springs you should supply to customers

Carpet fitters and flooring contractors often place washers on top of the pivot to lift the shoe and hence the door as a ‘quick-fix’ to accommodate the new height of the flooring material they have laid. In the long run, however, this can cause major damage to the floor-spring pin/shoe combination and is one of the hardest faults to overcome when servicing and repairing floor springs.


Picture 3: Be the winner in floor springs market by raising your conservation policy

Because most pins are tapering, lifting the shoe with washers also lifts off the tapered pin. So that, it allows the shoe to move about on it. This will either cause wear to the pins even though hardened. Worse, it’s to the square or oblong hole in the shoe into which the pin fits. It is very difficult and time-consuming to fill, drill. Then filing the hole square again, especially because of the taper. There are ways to raise the shoe and therefore the door from inside the floor springs. All of us know, washers are not the way to do it.

It is true that the traditional door springs are available obsolete by cheap modern sealed units - ‘maintenance free’. In that, make sure they have a relatively short service life and cannot repaired. However, it is not true that there is nothing that can be to a traditional door closer. Of course, especially floor springs, other than to fit a modern one.