Improvements in Syrens.
Year: 1894

page_text: Date of Application, 14th Sept., 1894
Complete Specification Left, 29th Jan., 1895-4ccepted, 9th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Syrens.
We ISAAC SMITH, and SAMUEL SMITH, of the Firm of Sidney Smith and Sons
f Basford Brass Works, Nottingham, Brass Founders and Steam Guage
Manufacturers, do hereby declare the nature of this invention to be as
follows:-
We employ two modifications; the first consists of a cylindrical vessel provided
with a screw threaded nut or flange at the bottom to connect it to a steam or com-
pressed air supply.
A short distance from the bottom, the vessel is provided with an horizontal
plate perforated, with radiating slots formed at an angle to the face of the plate.
From the centre of the plate an axle pin projects vertically on which a boss
revolves provided with radiating vanes placed at an angle reverse to the angle of
the slots in the horizontal plate.
The rise and fall of the vaned boss is regulated by a nut at the upper screw
threaded end of the axle pin.
The second modification has an horizontal plate perforated at the centre and
provided with a tube perforated or slotted at the side and closed at the top, screw
threaded for a nut to regulate the rise and fall of a vaned boss perforated or
slotted between the vanes. The top of the cylindrical vessel is secured to a straight
or curved trumpet ended termination. Steam or compressed air escapes from the
plate or slotted tube and impinges on the vanes of the boss causing it to revolve
and produce the required sounds.
Dated this Thirteenth day of September 1894.
H. W. GOUGH, C.E.,
Agent.
of Basford Brass Works Nottingham Brass Founders and Steam Guage Manu-
facturers 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 :-
DESCRIPTION OF THE DRAWINGS.
Figures 1 to 4 illustrate the first modification of our improvements. Figure 1
shows a side view of an improved syren with a chamber 1 hereafter referred to in
section.
Figure 2 shows a plan of a perforated plate 3 with an axle pin or stalk 5 cast or
screwed on it, the perforations may be either holes or slots.
Figure 3 an edge view of the plate 3, and
Figure 4 a plan of a boss with radiating vanes 6 placed at an angle to the boss or
perpendicular.

page_text: and
Figure 7 a plan of a flanged nut 7ª screw threaded and perforated, each severally
referred to hereafter.
Figure 8 is a sectional view of a chamber 1, and plate 3, and side view of a
boss with radiating arms 7 employed in the second modification of our improve-
ments, and Figure 9 a plan of the same without a regulating nut.
The corresponding parts in each figure are indicated by the same numbers where
necessary.
The first modification consists of a cylindrical vessel or chamber 1 "shown at
Figure 1" provided with a screw threaded nut or flange 2 at the bottom to connect
it to a steam or compressed air supply.
A short distance from the bottom the vessel is provided with an horizontal plate 3
perforated with radiating slots 4 formed at an angle to the face of the plate, an
axle pin or stalk 5 projects vertically from the plate on which either of the bosses
shown at Figures 1 and 5 revolve, each boss is provided with radiating vanes 6
placed at an angle reverse to the angle of the slots in the horizontal plate 3.
The rise and fall of the bosses may be regulated either by a plain screw
threaded nut 7 shown at Figure 1, or by a flanged screw threaded nut 74, perforated
with radiating slots "shown in plan at Figure 7" at the upper screw threaded end
of the pin or stalk. The vanes 6 may be vertical or at an angle to the boss.
The top of the chamber 1 is screw threaded to engage with the screw threaded
lower end of a straight or curved trumpet ended termination 8.
In the second modification a chamber 1 as before described has an horizontal
plate 3 perforated at the centre and provided with a hollow shaft or stalk 4 having
one or more rows of slanting holes or slots 5 in the side, shown at Figures 8
and 9.
The shaft or stalk is closed at the top and screw threaded to receive a nut 6 to
regulate the rise and fall of a boss provided with radiating vanes 7, between the
vanes holes or slots 8 are formed in the boss at the same angle as the holes or slots
in the sides of the shaft or stalk 4.
The top of the chamber is screw threaded to engage with the screw threaded
lower end of a straight or curved trumpet ended termination as described in the
first modification.
When in use upon steam or compressed air being admitted to the chambers it
escapes through the holes 4 shown at Figures 1 and 5 and impinges on the
vanes 6 of the boss causing it to revolve. Or it escapes through the holes or
slots 5 and 8 shown at Figures 8 and 9 and impinges on the vaned boss 7 causing
it to revolve.
In either modification producing a powerful penetrating sound from the lowest
bass to the highest octave according to the number of the slots and amount of steam
or compressed air admitted.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim 18-
1st. A circular plate 3 containing angular slots or radial perforations, with a
perpendicular shaft stalk or spindle 5 cast on its centre, such plate being secured to
a cuplike vessel connected to a steam or compressed air supply.
2nd. A circular plate 3 containing angular slots or radial perforations with
a perpendicular shaft 5 cast on its centre and a circular revolving boss with wings
ribs or vanes cast on it and placed at reverse angles to the slots or radial
perforations in the plate 3 as shown at Figures 1. 4. 5 and 6.
3rd. A circular plate 3 containing angular slots or radial perforations with a
perpendicular spindle 5 cast on its centre, and a circular revolving boss with wings 6
cast on it placed at reverse angles to slots in the plate, and a perforated screw
threaded Hanged lock nut 7 at the top of the spindle to regulate the position of

page_text: the revolving boss with vanes substantially as described and shown at Figures 5
and 6.
4th. A plate 3 carrying on its centre a terininable hollow spindle or shaft 4
perforated with angular slots or holes 5 and a revolving winged boss with angular
slots or holes 8 cut through the boss at reverse angles to the slots in the terminable
hollow spindle 4 with a lock nut 6 on the end of the spindle to regulate the rise and
fall substantially as described and shown at Figures 8 and 9.
5th. The general construction arrangement and combination of parts as described
and shown in the drawings annexed which constitute the syren.
Dated this Twenty-eighth day of January 1895.
H. W. GOUGH, C.E.,
Agent.