for American Organs and Harmoniums.
Year: 1885

page_text: for American Organs and Harmoniums.
"
I JAMES HARRISON of the firm of Thomas Harrison & Son of 168 Drummond
Street Hampstead Road in the County of Middlesex, Organ Small Work Maker,
do hereby declare the nature of my invention for AN IMPROVED CONSTRUCTION
OF THE VOX HUMANA MECHANICAL STOP FOR AMERICAN ORGANS AND HARMONIUMS
to be as follows:-
This invention relates to an improved form and manufacture of the Vox Humana
mechanical stop used in American and other organs by which it can be made
cheaper occupies less space and is more easily adjusted and fixed to the instrument
and can be readily taken to pieces for repair when desired-and is entirely free
from noise common to other mechanical stops.
My improvements consist in dispensing with the valves thereby giving a more
direct action of the wind and the addition of a connecting movable link or swivel
to attach to the draw stop rod and also the parts are made on a "rail" instead of
a "frame" as heretofore so that the parts may be readily taken to pieces.
Any suitable material may be used in the construction of the various parts.
An Improved Construction of the Vox Humana Mechanical Stop
for American Organs and Harmoniums.
I JAMES HARRISON of the firm of Thomas Harrison & Son of 168 Drummond
Street Hampstead Road in the County of Middlesex, Organ Small Work Maker
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 improved form and manufacture of the Vox Humana
mechanical stop used in American and other organs by which it can be made

page_text: cheaper occupies less space and is more easily adjusted and fixed to the instrument
and can be readily taken to pieces for repair when desired and is free from noise
common to other mechanical stops.
x.
My improvements consist in dispensing with the ordinary valves thereby giving
a more direct action of the wind and the addition of a connecting moveable link or
swivel to attach to the draw stop rod and also the parts are made on a "rail"
as heretofore so that the parts may be readily taken to
instead of
pieces.
" frame
"
Any suitable material may be used in the construction of the various parts.
And in order that my invention may be clearly understood and readily carried
into practice I will proceed to describe the drawings hereto annexed which show
several views of my improved mechanical stop the nature of each of which is
stated thereon,
a is a fan or flyer mounted on axis on the rail or bar b. On one end of the axis
of the fan a, a bladed wheel c is fixed within the box d the wheel c, being driven
by a current of air drawn through the passage d by the suction bellows of the
instrument the air passing into the bellows through the passage d² as shown.
e is a connecting moveable link which is made of suitable length to attach it to
the draw stop rod f and stop lever g which acts to start or stop the fan a at the.
wheel of the player.
g' is a flexible folding pallet one end being connected to the box d and the other
end to a wire g* fixed on the lever g, the pallet g¹ covering the passage d when the
fan is at rest and folding back when the stop rod f is drawn.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The improved arrangement and construction of a mechanical stop applicable to
American organs and harmoniums the air inlet passage d being covered by a
flexible folding stop g¹ brought into and thrown out of action by the lever g
connecting link e and draw stop rod f substantially in the manner and for the
purpose herein before described and represented in the drawings hereto annexed.
Dated this 13th day of April 1886.
"