Presentation on theme: "IRON MONGERY. Definition manufacture of iron goods, refers to the range of mechanical and moving items which enable a door to be opened, closed and locked."— Presentation transcript:
Definition manufacture of iron goods, refers to the range of mechanical and moving items which enable a door to be opened, closed and locked. The essential items of iron mongery for external door are hinges to hang the door and a lock mechanism. Many external door will require a latches to enable the door to be closed.
Main Components of iron mongery Hinges Door closers & Checks Locks & Latches Knob, Lever & Pull handles Bolts
Types of Hinges Back Flap Hinge Butt Hinge Counter Flap Hinge Garnet Hinge Nar-Madi Hinge Parliamentary Hinge Pin Hinge Rising Butt Hinge Strap Hinge Spring Hinge Hinges – a joint that holds two parts together so that one can swing relative to other.
Back Flap Hinge This hinges are used where the shutters are thin These are fixed to the back side of the shutters and the frame. Used for heavy cabinet work, steel base material, with screws included.
Butt Hinge These types of hinges are commonly used for fixing doors & window shutters to the frame. The flanges of hinge are made of cast iron, mallcable iron or steel, with counter sunk holes. Flange or hinge is screwed to the rebate of the frame. Normally used for door in the places where the doors should look elegant and make you feel welcome.
Counter Flap Finge This hinge is formed in 3 parts & has 2 centres. Hence the 2 leaves can be folded back to back.
Parliamentary Hinge Is used to enable door to fold back. It projects from the face of this frame.
Garnet Hinge Also known as T-shutter Has a long arm which is screwed to the shutter. Also has a short arm or plate which is screwed to the door frame. The hinge is used for ledged & battened doors, ledged & braced door, etc.
Nar-Madi Hinge Used for heavy doors The flange or strap the hinge is fixed to the door shutter while the pin on which the strap rotates is fixed to the frame.
Pin Hinge Also used for heavy door-shutters The centre pin of the hinge can be removed. The 2 leaves or straps of the hinge can be fixed separately to the frame & the shutter.
Rising Butt Hinge Such a hinge is provided with helical nickel joints, due to which the shutter is raised by 10mm on being opened. The door is closed automatically. Such hinges are used for doors of rooms having carpets, etc. They are used in place of ordinary butt hinges.
Strap Hinge Substitute of a garnet or T-hinge Also used for ledged & braced doors. For heavy doors such as garages, gates, etc.
Spring Hinges Single acting or double acting spring hinges are used for swinging doors. Single acting hinge is used when the shutter opens only in one direction. Double acting hinge is used when the shutter swing in both directions. The door closed automatically due to spring action.
Concealed hinge Continuous or Piano Hinge Flush hinge Friction hinge Barrel hinge Other examples of hinge:- Concealed hinge Piano hinge Flush hinge Friction hingeBarrel hinge
Door Closers & Checks
The closing action of doors can be controlled by the fixing of checks mechanisms on the top of the face to the door & the door frame head. This type of closer is adjustable to balance the weight of the door & is much less expensive than the pivot floor spring control. Available in double & single action patterns, handed and reversible.
LOCK AND LATCHES Locks – spring-loaded door locked that can only be opened from the outside with the key.
Types of lock commonly used:- Mortise lock Rim lock Cup board lock Lever handle lock Pad lock Cup board lock Rim lock Mortise lock Lever handle lock
Latch The most simplest way to hold the doors in the closed position. It has held in the extended position by a spring which only can be drawn by handle or knob only.
Tubular latches Night latches Rim latches Tubular latches Night latches Rim latches
KNOB, LEVER & PULL HINGE
KNOB Available in a wide range of shape & finishes. Provide a neat & strong specification Available in bronze & aluminium. Glass door knobs Mortice knobs Rim knobs
Crystal door knobs Centre door knobs Porcelain knobs
LEVER & PULL HANDLE Much easier to operate & some have an end turned into the face to further assist the grip. Must be well designed & strongly constructed since the lever arm produce considerable strain on the lock or latch mechanism.