IMPROVE- MENTS IN THE MANUFACTURE OF WIND ORGANS
Year: 1885

page_text: COMPLEIE
DIECIFICATION.
I, ROBERT HUNTER of N° 65A High Street, Clapham, in the County of Surrey,
Organ Builder, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF WIND ORGANS," and in what manner the samo
is to be performed, to be particularly described and ascertained in and by the
following statement :-
This Invention relates to an improved method of coupling notes on an organ
which consists chiefly in the employment of pneumatic tubes instead of levers,
such as have heretofore been employed, the object being to enable the performer
to depress the keys with a uniform pressure or touch.
For this purpose I divide the "swell" air chamber into as many air tight com-
partments or chambers as there are keys or notes on the organ, the partitions
being formed by metal plates fitting in grooves or channels in the back and front
of the chamber.
Over and behind the key board are placed two or more sound boards or chambers
into which the coupling tubes are inserted at one end, the other ends of the tubes
communicating with the swell chamber-The sound boards are provided with
pallets and slides to shut couplers on and off the slides operating in a similar
manner to ordinary slide valves.
In order that my Invention may be more fully understood I hereto annex a sheet
of Drawings illustrative thereof.
Figure 1 represents a sectional view of my Invention, and Figure 2 is a partial
front view thereof also in section-Figure 3 shews section of "swell" air chamber.
A are the keys which operate on levers B and C so as to open and close the
pallets D and E in the air chambers or consols F and G-The pallets D and E admit
air to the tubes or series of tubes 1, 2, 3, 4, 5 and 0. Each air chamber has as many
pallets to each note or key as there are couplers, each pallet also serving for the
direct tube from the sound board or console to the air chamber of the great organ,
and by the action of these pallets and slides, air can be admitted into the air
chamber H by one or all of the different tubes which communicate therewith―
The ends of each tube opening into the chambers H are closed by pallets or flap
valves J which serve to prevent the air from returning to the sound board or
console and thereby putting other notes or tubes into play.
The method of dividing the "swell" air chamber is an important feature in my
Invention, and is illustrated by Figure 3-The back and front of the chamber are

page_text: grooved or channelled and into these grooves are fitted metal plates L. Glue or
other adhesive material is thus dispensed with and sufficient space perfectly smooth
is afforded for the valves J.
From the foregoing description, it will be seen that any number of notes within
reasonable limits may be sounded by the depression of one key, the actual number
of notes being governed by means of the slides K-The plan of crossing the tubes
from one key to another is merely indicated in the drawing (Figure 2) but it will
be obvious from an inspection of Figure 1 that according as one or other of the
keys A is depressed and the slides K brought into play, any number of notes inny
be sounded, and this without any extra pressure on the part of the performer.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I would have it
understood that I claim
1. The use of tubes 1, 2, 3, 4, 5 and 6 more or less, as coupling mediums, instead
of levers, substantially as herein shewn and described.
2. The construction and combination of air chamber H with pallets or valves J
in the manner shewn and described in reference to Figure 3.
3. The combination in organs of the tubes 1 to 6 or any series thereof with the
divided air chamber H in manner substantially as herein shewn and described.
1
1002
HUGHES & SON,
5, Chancery Lane, London, W.C.,
Agents for the Petitioner.