I have put this into a separate category as these instruments contain no pipes, so are not, in the historical sense, organs at all. Harmoniums (and American reed organs) produce their sound by passing air through brass reeds causing them to vibrate in sympathy with their length, exactly like accordions and harmonicas. These are "free" reeds, which vibrate freely in their housings, unlike the "beating" reed type normally found in pipe organs.
The mechanism behind the stop knobs may seem rather crude, but it needs to be carefully overhauled to carry out its task without undue effort on the part of the player. Beneath the keyboard is an intricate array of rods and wires, fitted with felt bushings. These all need to be meticulously cleaned, re-bushed and adjusted to provide the player with the required response to their touch. Octave couplers in particular warrant much attention to detail.
The instrument's innards can be easily removed for restoration. The case left in situ will prevent it becoming damaged in transit, and when closed will continue to serve its purpose as an elegant piece of furniture during the restoration period.
I have included brief descriptions of two such restoration jobs:
61-note English harmonium
American reed organ
They were produced in vast quantities around the turn of the twentieth century. Those left in restorable condition are now becoming collectors items. However, examples in excellent working order are increasingly rare. Not only are they antique items of furniture, but are musical instruments with a real "live" sound.
The traditional English harmonium is pressure operated, with a horizontally mounted reservoir and feeders below. They are relatively rare, compared to American reed organs, which have a suction reservoir and feeders operated by canvas strapping over rollers from the pedals. The reservoirs and feeders of harmoniums are put together with leather, rather like those in church organs, but American reed organs use rubber-cloth.
The one pictured above is a harmonium of unknown make. The label says "S. Watson, Music Warehouse, Kidsgrove", the retailer. Re-covering the reservoir and feeders is a highly skilled task, and should only be attempted by an experienced technician, using the correct materials.
I restored this harmonium in 2007, and as the case needed attention it was transported to my workshop in its complete state. The first task was to completely dismantle it, and note what needed to be done as it was rebuilt.
![]() ![]() |
![]() This picture shows just how many parts make up the bellows system. They don't include hinge cloth and bellows leather. The angular pieces are "ribbing", needed to prevent the air inside the inflated bellows from blowing them inside-out. They are not necessary with the American "suction" type of bellows. |
The note action involves the 61-key keyboard and its associated mechanism. This instrument is relatively simple, having only one set of reeds, and no stop knobs, usually a familiar sight. Each key of the 61 keys on the keyboard operates a lever with a pallet valve on the other end.
![]() ![]() |
Left: The reeds needed little attention at this stage; they were in very good condition. Any tweaking would be done at the setting-up stage after re-assembly. Above: The newly restored pallets were re-installed along with their cleaned springs. The red felt pads provide silent coupling with the push-rods under the keys.
![]() ![]() |
The only task left was to regulate the reeds where necessary, and to re-fit the action and keyboard back into the restored case, and fit the keyboard lid and music desk ready for a proud owner to display (and play) in the living room.
Unfortunately, not many pictures were taken of this job. However, this type of instrument is far more common than the English harmonium. Instead of the wind being forced up through the reeds from a set of pressure bellows, it gets sucked downwards through the reeds into a vacuum box by a pair of suction bellows mounted vertically at the back of the base section of the instrument. They are still operated by the player's feet, but the springs are mounted inside the bellows and reservoir, which is usually covered with "bellows cloth", a cotton cloth faced with a very thin layer of rubber. As the internal springs try to force the bellows apart, the job of assembling them needs careful use of special clamping brackets until the glue is thoroughly set.
![]() ![]() |
© 2018, John Page