Improvements in the Drawstop or other similar Actions in Organs or other Wind Instruments.
Year: 1888

page_text: Date of Application, 1st Dec., 1888
Complete Specification Left, 2nd Sept., 1889-Accepted, 19th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Drawstop or other similar Actions in Organs
or other Wind Instruments.
1, JAMES JOHN WALKER of 27 Francis Street in the County of Middlesex Organ
Builder do hereby declare the nature of my invention for IMPROVEMENTS IN THE
DRAWSTOP OR OTHER SIMILAR ACTIONS IN ORGANS OR OTHER WIND INSTRUMENTS
to be as follows:-
"
This invention relates to a method of simplifying the mechanism usually
employed in the drawstop and similar actions of organs whereby the use of "squares
that is of triangular pieces of wood or metal and levers, or bell cranks, for conveying
the motion of the drawstop handle round corners or angles are dispensed with.
In order to accomplish this I use in place of the squares a flexible coupling, which
may be made of clock spring or any suitable material jointed or attached to the
particular part of the action where it is required-In order to retain it in its position
1 use a guide which may be a groove in a suitable bed piece or 1 may employ
friction rollers suitably placed or 1 may employ both a guiding groove and friction
rollers or balls together.
By using my flexible coupling I can place, for instance, the drawstop handles at an
angle of 90 degrees with the drawstop rods or at any greater or less angle as may be
required or I can apply my invention to any other part of the organ where a drawing,
pulling or pushing or sliding action is required-Sometimes to relieve the friction
of the bearings when they are in grooves, I do so by means of holes bored in a
particular manner which holes may be filled with a lubricant if required.
It will be clear that I can by the above means place any part of such a sliding
action at any angle with any other part by simply placing the parts in their required
positions and putting a coupling between them and controlling the coupling piece by
suitable guides, rollers, plain or ball bearings.
Dated this 1st day of December 1888
GEORGE WILLIAM BUDD,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Drawstop or other similar Actions in Organs
or other Wind Instruments.
I, JAMES JOHN WALKER of 27 Francis Street in the County of Middlesex Organ
Builder 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 has for its object the simplification of the mechanism usually
employed in the drawstop and other similar actions of organs and other wind
instruments and by its means I am enabled to dispense with the use of the so
called "squares" that is of triangular pieces of wood or metal, and levers for conveying
the motion of the drawstop handle, pedal or other action around corners or any
required angles at which the parts may be placed with reference to each other.
In order to accomplish this I use in the place of the squares, levers, or other
mechanism a flexible coupling which may be made of a single piece of clockspring or
any other suitable material having sufficient flexibility and strength, or of a series
of pieces in combination, of varying lengths, for giving additional strength-and I
attach one end to each of the parts it is required to join or couple together, such as
the drawstop and slider-In order to give the coupling sufficient stability I use a

page_text: guide which may be a groove in a bed piece upon which the drawstop and slider, for
instance, are supported or instead of a groove I may employ friction rollers or balls
together with a groove.
A reference to the drawings, in which like letters represent like parts will help to
explain the construction of my invention. Figure 1 is a plan showing a drawstop
handle a, coupled with a slider d, by means of my flexible coupling b, the coupling
being bedded, that is sunk or partially sunk in a groove in the bed piece e, e.-In order
to lighten the friction between the sides of the groove and the coupler I sometimes
find it convenient to make holes c, c, c, in the bedpiece, which may be left empty or
may be filled, if desired with a lubricant-Figure 2 is a plan similar to Figure 1
except that in this case I employ friction rollers in place of a groove, which are
shown in elevation in Figure 3. Figure 4 shows two parts of the action coupled and
the coupler kept in its place by means of friction rollers or balls placed in the holes c c c
(which are made to receive them), and by means of a groove in the bedpiece.
I find by using my flexible coupling that 1 can place the parts at
any desired
position to each other, from being parallel to any angle greater or less than a right
angle, as may be required, and besides applying it to the drawstop action, which is
simply described as an illustration, I can apply it to any part of the action where a
similar sliding action is required-In order to "set out" the positions of the holes,
grooves rollers or balls, it is only necessary to determine the angles at which the parts
are required to work, and to mark out an easy curve, that need not necessarily be
circular, and on this curve to turn or cut a groove or to set the rollers, and finally to
attach the coupler to the parts.
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 I
claim is ;-
The use of flexible couplings to connect the parts of the action of an organ or other
wind instrument substantially as above described.
GEORGE WILLIAM BUDD,
Agent for Applicant.