You can see from the brass cover plate that this floor spring was supplied by the Parwinac division of Parker, Winder & Achurch. It was common practice for architectural ironmongers and architectural firms to have their own names stamped on the cover plates for advertisement purposes, this has lead to much confusion when identifying floor closers. This particular floor closer is in fact a single action floor spring known as a Singlo, the double action version is called a Duplo. As can be seen the problem with this closer is a broken coil spring, M.F.S replaced the spring from our NOS stock and the floor spring is now back in service. The Singlo is in many ways identical to the Briton/Newman 600, the only real difference is the Singlo has a square pin.
These two patents relate to improvements made to the ubiquitous stalwart of pre and post war Britain's door closers, the Briton B. The first patent is attributed in 1931 to D. J. Webberley of J. Adams & son Ltd and the second 1947 patent is attributed to A. W Newman and H. C Shead of Newman & Sons Ltd.
On the left is the Briton B door closer and on the right is its bigger brother the Briton D. These will be refurbished in the future so look out for the pictures.
In my 1925 Parker, Winder & Achurch vintage trade catalogue the next floor spring I will show you is advertised as The "Leader" Patent Floor Spring with hydraulic check. Having a square pin and somewhat of an overly complicated mechanism this floor spring was repaired for Knowle Parish Church. You can clearly see the square pin in the first photograph and in the later advert from Wm Newmans & Sons Ltd, describing it as the Britannic.
As you can see however from the 1961 patent, changes were made to the Leader/Britannic. These changes simplified the pin to spring transfer mechanism, the cover plate was slightly reshaped and the pin itself was changed to a more rectangular design.
After stripping the Leader/Britannic down, rebuilding and manufacturing a new pin our clients have a set of floor springs to be proud of!
The first floor spring I would like to show is a Cartland & Co Patent Climax floor spring. The series of pictures shows one of the brass cover plates, one of the floor springs before refurbishment, the Climax after I replaced the springs and finally the 1893 patent I found of it. As can be seen I left the cover plates alone, although they would look fantastic polished up.
The Climax is unusual as the springs within are configured to expand rather than contract as in most other models. There is an ingenious vertically positioned wheel connected to the pin that lifts a claw which in turn is coupled to one end of the 8 springs. This claw expands the springs and as they contract the action is reversed closing the door smoothly. As can be seen there is no hydraulic nor pneumatic check in this early model door closer.
I now have two late Victorian era fully refurbished floor springs awaiting a customer.
Here is the definition of a door closer, a good place to start from I think:
A door closer is defined as any mechanical device that closes a door in a controlled manner, in general after someone opens it,  or after it was automatically opened (when opened automatically they are commonly referred as a door opener). The force used to open the door is stored in some type of spring and when released this energy is then utilised to return the door to its original starting position (closed position). Many types of modern door closers can be linked to a buildings fire alarm system, in scenarios where doors need to be held open for the majority of the time they are held back with some sort of electro magnetic device,  when the fire alarm is triggered it cuts power to the electro magnetic hold open device allowing the doors to close. These hold open devices can be separate to the door closer or part of its integral design.  https://en.wikipedia.org/wiki/Door_closer
As there is so little information out there with regard to door closers, especially vintage and antique model floor springs, I thought I would start this blog.