What is the difference between cast iron and malleable iron?
There are many types of cast iron. Black ironmongery is available generally in grey, (cast), iron, SG, (Spheroidal Graphite), and malleable iron.
Grey iron, although relatively easy and cheap to cast, is extremely brittle, in thin sections especially, and cannot be rivetted, hammered or assembled with any ease.
SG iron, although more durable than grey iron is difficult to cast into thin sections and this precludes its use in many of Kirkpatrick's products. In addition it does not possess the inherent toughness of malleable iron which is vital in the everyday use of Kirkpatrick's door and window furniture.
Malleable Iron is an iron which, after casting, is subjected to a heat treatment process known as annealing. In this process castings are heated to around 1000C for up to 100 hours whilst in contact with haematite ore. The ore acts as an oxidising agent which removes carbon from the casting. It is the presence of carbon in cast iron which causes its brittleness and removing some makes the casting stronger or more malleable.
There are many similar products available in the UK and indeed worldwide. However, Kirkpatrick cast all of their products in whiteheart malleable iron which is particularly durable and well suited to the manufacture of architectural ironmongery.
Kirkpatrick's long tradition of manufacturing these products means that they have a style and authenticity which is lacking in the cheap imitations which are available. Kirkpatrick's workforce is skilled in the traditional methods of production which have not changed in essence over the last 152 years.
Despite Kirkpatrick's use of traditional methods they are a forward looking Company. They have invested considerable sums in a ew electric smelting facility wich produces a much more consistent quality of iron. This facility has also gone some way to helping Kirkpatrick's meet the environmental standards demanded by current UK legislation.
Athough Kirkpatrick's products are traditional in look and feel they are always looking to develop their product range to meet current trends and legislation. Kirkpatrick's range of locking fasteners and levers which operate three point locking systems are testimony to this.
Kirkpatrick's Pewter finish is achieved by using a different colour final coating to give a long lasting Pewter effect. This finish is available on all products.
Kirkpatrick's original and authentic patterns are used to produce the Cast Brass range, and after casting the components are polished and then assembled by hand, finally finished with a tough lacquer to offer protection against corrosion.
How Do I Care for my Black Antique Ironmongery
Iron in any form, whether Cast or Malleable, is susceptible to rusting. During our finishing process we endeavour to cover all areas of Antique Ironmongery by first dipping into a liquid paint which is then stove dried. This is then followed by the Black Powder Coating process, which is also cured by stoving. Inevitably when two areas of metal come into contact with each other an abrasive action is enacted, and sooner or later the painted surfaces are lost by the constant rubbing action. This is unavoidable during the operational activity of the article, so where obvious abrasive areas of moving parts are visible an occasional light oiling is recommended. This will help to prolong the good looks and keep the rusting process at bay. To remove harmful deposits which will cause corrosion (this is even more critical where one lives near to a coastline, as the salt in the sea air has a very corrosive effect on iron) we advise that the Ironmongery is regularly wiped over with a lightly oiled cloth.
We strong advise that these precautions are taken. By adopting these simple precautions you will prolong the products life and enhance the beauty of your home.
Installing a Mechanical Bell Pull System
You will require the following:
Kirkpatrick bell pull
Kirkpatrick mechanical bell crank
Mechanical Butlers Bell with a hardware pack (not shown on our web site but we can supply).
The hardware pack contains pulleys, cord and brackets). Mount the bell crank at a high level on the door frame and connect to the Butlers Bell by means of the coard using the pulleys as necessary. When the bell is activated the spring coil on the Butlers Bell cases the bell to ring. This system is a true reflection of the Victorian period style. The mechanical system is best suited when the distance between the bell and bell pull are not too far so the tension in the pulley system is satisfactory. The cord must be wrapped around each pulley one complete turn and should be taught between the pulleys to obtain a good ringing tone.
Installing an Electrical Bell Pull System
You will require the following:
Kirkpatrick bell pull
Kirkpatrick electrical bell crank
Electric bell wire and cable clips~
Transformer (unless using batteries)
If you have an existing electrical door bell system it is possible to wire this into the electrical bell crank. When the bell is a long distance from the bell pull the electrical system is more suitable. More bells can also be wired into the circuit. We would recommended that the installation should be carried out by a qualified electrician.
Determining Left or Right Handing - Latch Mechanism Placement for Lever and Mortice Lock Sets
Left Handing - A door has left handing when the hinges are on the left side and the door swings inwards. You must stand on the outside of the door to determine handing.
Left Reverse Handing - A door has left reverse handing when the hinges are on the left side and the door swings outward toward you. Reverse handing is usually used for restaurants and other businesses, You must stand on the outside of the door to determine handing.
Right Handing - A door has right handing when the hinges are on the right side and the door swings inwards. You must stand on the outside of the door to determine handing.
Right Reverse Handing - A door has right reverse handing when the hinges are on the right side and the door swings outwards towards you. Reverse handing is usually used for restaurants and other businesses. You must stand on the outside of the door to determine handing.