IMPROVEMENTS IN MUSICAL INSTRUMENTS KNOWN AS AMERICAN PROVISIONAL SPECIFICATION
Year: 1881

page_text: LETTERS PATENT to Wardle Eastland Evans, of Highgate, and Richard
William Jarrett, of Hacknoy, both in the County of Middlesex, for an
Invention of "IMPROVEMENTS IN MUSICAL INSTRUMENTS KNOWN AS AMERICAN
PROVISIONAL SPECIFICATION left by the said Wardle Eastland Evans and
Richard William Jarrett at the Office of the Commissioners of Patents on the
1st June 1881.
WARDLE EASTLAND EVANS, of Highgate, and Richard William JARRETT, of
Hackney, both in the County of Middlesex. "IMPROVEMENTS IN MUSICAL
INSTRUMENTS KNOWN AS AMERICAN ORGANS."
This Invention relates to improvements in the construction of the bellows, and
in the introduction of an expression stop to musical instruments known as American
organs.
One part of our improvements consists in the application of check pieces to the
middle board of the bellows to carry the feeders and reservoir respectively, so as to
afford space for the wind to be drawn through valve boxes on the top board as
regards the feeders, and to admit of the communication between the reservoir and
the reeds being cut off, an expression pallet being applied for that purpose.
The ordinary air passages in the middle board between the reservoir and feeders
aro dispensed with, the air to the feeders being drawn from above, as previously
described.
A valve box is placed over the entrance to each feeder, having an inlet underneath
on one side, an inner valve being used to prevent the return of the wind. A suitable
stop action is applied to open or close the expression pallet as desired.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Wardle Eastland Evans and Richard William Jarrett in the Great
Seal Patent Office on the 1st December 1881.
WARDLE EASTLAND EVANS, of Highgate, and
Hackney, both in the County of Middlesex.
INSTRUMENTS KNOWN AS AMERICAN ORGANS."
RICHARD WILLIAM JARRETT, of
" IMPROVEMENTS IN MUSICAL
This Invention relates to improvements in the construction of the bellows, and in
the introduction of an expression stop to musical instruments known as American
organs.
And in order that our Invention may be clearly understood and readily carried
into practico, we will proceed to describe the Drawings hereto annexod, Figure 1 of
which shows a vertical section of so much of an American organ as will enable us
to describe the nature of our improvements, one part of which consists in the
application of cheek pieces B, B, to the middle board E of the bellows to carry
the feeders and reservoir respectively, so as to afford space for the wind to be drawn
through valve boxes C on the top board F as regards the feeders H, and to admit
of the communication between the reservoir G and the reeds being cut off, an
expression palate A being applied for that purpose. Cx is the feeder valve, and D
a cross pieco connecting the feeder cheeks for the flexible bellows material to be
fastened to.
The ordinary air passages in the middle board E between the reservoir G and
feeders H are dispensed with, the air to the feeders being drawn from above, as
previously described.
A valvo box C is advantageously placed over the entrance to ench feeder H,
having an inlet underneath on one side, an inner valve C* being used to prevent
the return of the wind. A suitable stop action is applied to open or closo tho
expression palate A as desired.
The arrows in dotted lines show the entry and exit of the wind.
Figure 2 shows a modified arrangement, the parts being marked with similar
letters of reference.
Having thus described the nature of our Invention, and the manner of carrying
the same into practice, we would have it understood that we do not claim any of
the parts separately, which aro well known and in common use, but what we
claim,―
The improved arrangement and construction of the bellows, and in the application
to musical instruments known as American organs of an expression stop, substan-
tially as and for the purpose hereinbefore described and represented in the Drawing
annexed.
In witness whereof, I, the said Richard William Jarrett, have hereunto set
my hand and seal, this First day of December, in the year of our Lord
Ono thousand eight hundred and eighty onc.