Improvements in Organs.
Year: 1892

page_text: Date of Application, 21st Nov., 1892
Complete Specification Left, 21st Aug., 1893-Accepted, 23rd Sept., 1893
PROVISIONAL SPECIFICATION.
4
Improvements in Organs.
I ANSELME ANDRÉ MARIE GAVIOLI, of 21 Boulevard Poissonnière, Paris in
the Republic of France, Manufacturer, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to soften the sounds proceeding from the trumpet,
trombone, or bombardon pipes of organs, and the invention consists in stretching
across the bell-mouth of the pipes, a screen of suitable material.
This screen may be placed in the mouth of the pipe, and be provided with one
or more holes of a size varying according to the calibre of the pipe, or it may be
placed a short distance from the mouth, in which case it will have no holes, and
will be secured in position by suitable stays.
Dated this 21st day of November 1892.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Organs.
--
I ANSELME ANDRÉ MARIE GAVIOLI of 21 Boulevard Poissonnière, Paris in
the Republic of France, Manufacturer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to an important improvement in the trumpets, trombones,
and bombardons of organs in general.
It is known that these instruments, which are particularly used at fairs, give out
excessively harsh and discordant sounds, which annoy everybody, and which
have even been the cause of their being forbidden by the police in numerous places.
It is the object of my invention to guard against this grave defect, by softening,
to a considerable extent, and at will, the tones of these instruments.
The invention consists in placing in front of the bell mouth of the trumpets,
trombones, and bombardons, a screen or diaphragm, which deadens or softens the
crudity of the tones.
This screen or diaphragm may be of any material, and of any form; it may be
pierced by one or more holes, or may not be perforated at all.
In this latter case, it should be placed at a certain distance from the bell mouth,
in order not to close it completely.
In the drawing hereunto annexed,
Figs. 1show, in side and front view, and Figs. 2 in side and back view, and by
way of example, the arrangements of screen or diaphragm which I may adopt.
Figs. 3, 4 and 5 represent slight modifications in the position of the diaphragm.
The letter P, Figs. 1 and 2, designate the bell mouth, and the letter E the screen,
the object of the invention.
As may be seen from Figs. 1, this screen or diaphragm E may have, at O, a hole
of dimensions varying according to the tone of the trumpet, or it may be plain (see
Figs. 2), and in this case, it is supported at a certain distance from the bell mouth
by stays e, or by any other convenient menus.
The screen or diaphragm for softening or deadening the sound, placed in front
of the bell mouth of trumpets, trombones, and bombardous, gives excellent results,
but it has also been found that this screen or diaphragm, when placed at the inlet,
DQ21

page_text: that is to say, at the opposite end of the tube to the bell mouth, gives equally
good results.
The screen thus placed may be flat, or slightly concave; it may be pierced by a
central hole, and in this case is soldered to the edges of the opening; or else it
may be plain, and maintained in place in front of the opening by soldered stays, or
in any other manner. Thus, in Fig. 3 the screen or diaphragm E' takes the form
of a perforated disc, placed freely in a socket piece A on the wind chest, and the
trumpet P1 is inserted above it.
In Fig. 4, the screen or diaphragm takes the form of a capsule E³, into which
the extremity of the trumpet P' is inserted.
In Fig. 5, the screen consists of a ring of wood or other material, E³, inserted in
the end of the trumpet Pl.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
The improvements above described, which consist, in substance, in the application
of a screen, diaphragm, or its equivalent, to trumpets, trombones, bombardons, etc.,
of organs in general, with a view to deaden or soften the tone of these instruments,
as set forth.
Dated thie 21at dov of Anonat 1892
NEWTON & SON,
Agents for the Applicant.