Regulating by Automatic Means the Wind Supply to Church Organs and like Instruments Blown by Motive Power.
Year: 1887

page_text: Date of Application, 14th Nov., 1887
Complete Specification Left, 11th Sept., 1888
Complete Specification Accepted, 14th Nov., 1888
PROVISIONAL SPECIFICATION,
Regulating by Automatic Means the Wind Supply to Church
Organs and like Instruments Blown by Motive Power.
I HENRY THORNTON NEWBIGIN of Alnwick in the County of Northumberland
Engineer, do hereby declare the nature of this invention to be as follows:-
The invention consists in attaching the connecting rod C referred to in annexed
drawing which works the air feeder "A" to a motion block "K" working in an
oscilating lever "D" (which may be either radius or straight and) which has a
constant angle of oscilation.
The point of connection "E" between the motion block "K" and the connecting
rod is capable of being shifted to the centre of oscilation "H" or away from it
thus altering the travel and consequently delivery of the air feeder "A" the distance
of the point of connection "E" from the centre of oscilation "H" is controlled by
means of a lever, levers, or chain and weight F from the air receiver "B" so as to
shift the point of connection "E" towards the centre of oscilation "H" as the
receiver "B" fills and so shorten the travel of the connecting rod "C" and diminish
the supply of air and to draw it away from the centre of oscilation "H" as the
receiver "B" empties and thus increase the supply of air.
The feeder "A" delivers its air into receiver
Dotad this Twelfth day of November 1887
B."

page_text: Organs and like Instruments Blown by Motive Power.
I, HENRY THORNTON NEWBIGIN, of Alnwick, in the County of Northumberland,
Engineer 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 :-
My invention is designed to provide for automatically regulating or controlling the
wind supply to church organs and similar instruments.
For this purpose I so construct the blowing mechanism that the throw or travel of
the rod which works the air-feeder will be varied by the expansion and contraction of
the air-receiver. This varying throw or travel of the said connecting rod may be
attained in various manners.
In some instances I employ a rocking lever having a constant angle of oscillation,
in which slides a bar having attached thereto the connecting rod which works the
air feeder. This bar is so connected with the air receiver that as the said receiver
expands it moves the point of connection of the said rod or bar nearer to the centre of
oscillation thus diminishing the travel of the air-feeder and as the said receiver
contracts it moves the said point of connection farther from the centre of oscillation
and so increases the travel of the feeder and consequently the air-supply to the
instrument.
In other instances I employ a crank the throw of which may be increased or
diminished by levers worked from the air-receiver.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a side elevation, and
Figure 2 is a plan, of one form of my improved apparatus.
Figure 3 is a front elevation showing a detail of construction.
Figure 4 is a plan.
Figure 5 a side elevation partly in vertical central section and
Figure 6 a front elevation showing a modification of my invention.
Like letters indicate corresponding parts throughout the drawings.
A is the air-feeder, B is the air receiver, C, C are pulleys for transmitting
motion by means of belt or other gearing from a gas-engine or other motor as
hereinafter described.
a is a connecting rod coupled at a² to the air-feeder A and at a² to a slide-bar b.
The bar is arranged to slide in a slot or groove c¹ in a rocking lever c, more clearly
shown in figure 3. The lever is provided with extensions c² whereby it is carried in
suitable bearings e³ in standards d,d. The pulley C is fixed upon one extremity of
the driving shaft or spindle e which is carried in suitable bearings in standards ƒ.
The said shaft or spindle e is, moreover provided with a crank disc g and a connecting

page_text: rod couples the pin g² of the said crank disc g, to a pin g³ upon an extension c
of the rocking lever c. his a rod coupled at to the upper extremity of the
slide-bar band at h² to the long arm of a lever i pivoted at to any suitable support.
The short arm of the lever is connected by means of a rod j coupled at to the
lever and by a rod k to the air receiver B. The rod is provided with a counter-
weight, and is so arranged as to pass into a hollow portion provided in the rod k
for purposes of adjustment. A thumb screw is provided for fixing the rod ¡ in
any desired position.
The operation of my apparatus is as follows, that is to say. As the air-receiver B is
filled and consequently expanded the rods and j and the short arm of the lever i are
elevated, and consequently the long arm of the said lever, the rod and the slide bar b
are depressed thus bringing the joint a² of the connecting rod a nearer the centre of
oscillation of the rocking lever c, and thereby reducing the throw of the connecting
rod a and the amount of air supplied by the air-feeder A to the air receivor B. Should
on the other hand the amount of air in the air receiver decrease and consequently the
latter contract the contrary action takes place and the joint a² of the connecting rod a
is raised more or less and the throw of the said connecting rod and the amount of air
supplied by the air feeder A proportionately increased.
Figures 4, 5 and 6 illustrate a modification of my invention wherein I provide for
the automatic regulation or control of the air supply by means of a variable crank.
is a lever pivoted at to a suitable bracket and intended to be operated from the
air receiver. m is a sleeve provided upon the outside with spiral projections m³,
forming a quick-threaded screw, the lever is connected to the sleeve m by means of
a fork 2 formed with slots 13, and straps a fitting in a groove m² in the sleeve m and
secured thereon by bolts. The straps are moreover provided with pins or pro-
jections which engage in the slots 12. o is a shaft or spindle which is driven by the
gas engine or other motor and which is carried at one extremity in a suitable bearing o'.
The spindle o passes through the sleeve m and is keyed or otherwise secured to a
hollow boss or extension pupon a disc p. The shaft or spindle o is moreover provided
with a feather of adapted to fit in a corresponding groove or keyway m³ in the sleeve m,
so that the said sleeve can move laterally upon the shaft or spindle o but is prevented
fiom turning or rotating upon the same. is a disc or scroll plate having a hollow
boss or extension in which the sleeve m is adapted to fit and which is provided with
spiral grooves q corresponding with the spiral projections upon the sleeve m. The
said boss or extension is moreover provided with a journal y carried in a suitable
bearing The boss or projection p¹ upon the disc p fits into a corresponding recess
in the disc or scroll plate and the hollow boss or extension y' and is retained in or
prevented from lateral movement but permitted to rotate by a set-screw s passing
through the boss or extension and fitting into a circumferential groove in the
boss or projection p². The disc p has a slot p³ in which is adapted to slide a block or
piece t in which is firmly fixed a crank pin . Upon the other side of the block or
piece is provided a pin or projection t having an antifriction roller t³. The pin or
projection fits in a slot in the disc or scroll plate q. The slot is so formed as to
gradually diverge from the centre of the said disc or scroll plate 7 towards the
periphery that is to say, it is of such a form that if the disc be rotated in one
direction the pin or projection t² will be caused to move from the periphery of the
disc or scroll plate q towards the centre thereof and consequently the block or piece t
and the crank pin will move towards the centre of the disc p, and if the said disc
or scroll-plate be rotated in the opposite direction the contrary action will take
place. The crank pin t¹ is connected to the air feeder by means of a suitable
connecting rod.
q
The operation of the device is as follows that is to say:-If the lever which is
suitably connected to the air receiver be moved to the right by the filling and
consequent expansion of the said air receiver the sleeve m will enter the hollow boss
or projection upon the disc or scroll plate 7 and through the spiral projections m'
will cause the said hollow boss or projection q' and consequently the disc or scroll
plate q to rotate in such a direction as to bring the crank pin t¹ nearer the centre

page_text: of the disc p and thus reduce the throw of the said crank disc p and consequently
the working of air feeder and the supply of air to the air receiver. If on the
contrary the lever / be moved to the left by the emptying and consequent contraction
of the air receiver the sleeve m will be withdrawn from the hollow boss or
projection upon the disc or scroll plate and the said disc rotated in the opposite
direction, thus causing the crank pin t to move away from the centre of the disc P
and increasing the throw and consequently the working of the air feeder and the
supply of air to the air receiver.
Although I have herein before described convenient and advantageous methods
of carrying my said invention into practice it is obvious that I can somewhat
further modify the construction of my apparatus without departing from the nature
of my said invention. For instance, I can place the air feeder and the air receiver
in any other suitable positions relatively to the apparatus for regulating or controlling
the wind supply, or I can connect the said apparatus by any suitable arrangement
of levers or otherwise with the air feeder and the air receiver.
I sometimes provide instead of the arrangement hereinbefore described a circular
rack and pinion working a screw which moves the crank pin, which rack is rotated
in the same way as the scroll plate before described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what 1.
claim is :-
--
First. The method of providing for the automatic regulation or control of the wind
supply to church organs and similar instruments by varying the travel of the air-
feeder according to the quantity of air in the receiver, substantially as, and for the
purpose, set forth.
Second. A rocking lever connected with suitable driving mechanism and having an
adjustable arm or slide-bar connected to the air-feeder and to a lever arranged to be
operated by the expansion and contraction of the air-receiver, substantially as, and for
the purpose, set forth.
Third. The modification of my invention substantially as described with reference
to figures 4 to 6 of the accompanying drawings.
D: 1141
11000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.