Improvements in Musical Tops and other Rapidly Revolving Toys.
Year: 1892

page_text: Date of Application, 30th July, 1892
Complete Specification Left, 30th Jan., 1893-Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Musical Tops and other Rapidly Revolving Toys.
I, EDWARD HALL of 1, Finkin Street, Grantham, in the County of Lincoln,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to make tops or other rapidly revolving toys to
produce a loud musical sound.
The tops may be made of wood or any other suitable substance.
My improvements in an ordinary spiked top consists of a hollow formed in the
centre of the top, there are four holes formed at right angles to the above mentioned
hollow, and at right angles to each other, and passing through the greatest cir-
cumference of the top. In the upper part or neck of the above mentioned hollow
is placed a small metal disk. The said disk has a slot across the centre, over which
is fastened a thin metal tongue, which when the top revolves produces a loud
musical sound.
T 1
1000
EDWARD HALL.
COMPLETE SPECIFICATION.
Improvements in Musical Tops and other Rapidly Revolving Toys.
I, EDWARD HALL, of 1, Finkin Street, Grantham, in the County of Lincoln,
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 :-
:
The object of my invention is to make tops or other rapidly revolving toys to
produce a loud musical sound.
Before fully describing my invention, I would here remark, that since filing my
Provisional Specification, I have discovered that the application of the four holes
passing through the greatest circumference of the top therein described, is
unnecessary, as one hole or passage formed through the greatest circumference of
the top will produce the same effect, therefore I do hereby disclaim the said four
holes.
The tops may be made of wood or any other suitable substance.
My improvements in an ordinary spiked top consists of a hole formed in the
centre of the upper part of the top, and passes a short distance down into the top.
The upper part of the above mentioned hole is countersunk or made larger to
receive a small metal disk, which is pressed tightly into the countersunk part, or
otherwise made secure. The said disk has a slot across the centre, over which is
fastened at one end a thin metal tongue, this tongue being placed in the centre of
the top, and directly over the above mentioned hole, makes the top more effective,
because near the centre of the top the air is less interrupted.
There is another hole or passage formed at right angles to the above tioned
hole, and passes through the greatest circumference of the top. The twins are
thus connected and form passages, through which the air circulates when the po is
made to revolve.
And in order that my invention may be more completely underst
is given to the accompanying sheet of drawings and to the lette:
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1 1a.S

page_text: DESCRIPTION OF DRAWINGS.
Figure 1. is a vertical section of a spiked top constructed in accordance with my
improvements.
Figure 2. represents a plan thereof.
Figure 3. is a horizontal section cutting through the hole or passage G.
Like letters refer to corresponding parts in the three figures.
A is the body of an ordinary spiked top which may be made of any suitable
material.
B is a hole formed in the centre of the upper part of the top, and passes a short
distance down into the top, and is connected with hole or passage G.
C is the countersunk part of the hole B.
D is the small metal disk which is pressed tightly into the countersunk part C,
or otherwise made secure.
E is the slot formed in the disk D, through which the air passes to the holes or
passages.
F is the thin metal tongue, fastened at one end to the disk D, by which means it
is suspended over the slot E.
G is the hole or passage through which the air circulates, when the top is made
to revolve.
H is the spike on which the top revolves.
To spin the top, and produce a musical sound, a string is wound round it in the
usual way and thrown sharply to the ground, as it rapidly revolves the hole or
passage & throws out the air from the centre of the top, causing a partial vacuum,
which draws the air through the hole B, and the slot E, which causes the thin
metal tongue F to vibrate, producing a loud musical sound.
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
claim is
1. A musical top formed by the hole B, with its countersunk or enlarged part C
which receives the small metal disk D.
2. The small metal disk D, so placed that the slot E, and the thin metal
tongue F is placed directly over the hole B.
3. The hole or passage G, which passes through the greatest circumference of
the top, and by which the air is expelled when the top is made to revolve, all
herein described and for the purpose stated.
Dated this 28th day of January 1893.
EDWARD HALL.