Improvements in or connected with Whistles or the like for Explosion Engines.
Year: 1893

page_text: Date of Application, 23rd Aug., 1893
Complete Specification Left, 22nd May, 1894-Accepted, 23rd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Whistles or the like for
Explosion Engines.
1, FREDERICK RICHARD SIMMS, of 95, Billiter Buildings, 49, Leadenhall
Street, in the City of London, Engineer do hereby declare the nature of this
invention to be as follows:—
My invention relates to improved means for sounding a whistle, or like audible
signalling apparatus, in connection with an explosion engine.
According to my invention I utilize the products of combustion exhausted from
the engine for the purpose, and, in order to carry out my invention, I
advantageously arrange in the exhaust pipe a three-way cock which, under ordinary
circumstances, allows the products of combustion to pass but which can be turned
to allow more or less of the products of combustion to pass to the whistle.
In practice this three-way cock may also be arranged for regulating the speed of
the engine or for stopping the same.
Dated this 23rd day of August 1893
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Whistles or the like for
Explosion Engines.
I, FREDERICK RICHARD SIMMS, of 95, Billiter Buildings, 49, Leadenhall
Street, in the City of London, 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 relates to improved means for sounding a whistle, or like audible
signalling apparatus, in connection with an explosion engine.
According to my invention I utilize the products of combustion exhausted from
the engine for the purpose, and, in order to carry out my invention, I
advantageously arrange in the exhaust pipe a three-way cock which, under ordinary
circumstances, allows the products of combustion to pass but which can be turned
to allow more or less of the products of combustion to pass to the whistle.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is an elevation of a three-way cock arranged for carrying out my
invention; and,
Figure 2 is a sectional view of the same.
a is the three-way cock the straight passage through which is connected at one
side 6 with the engine cylinder and at the other side c with the pipe d through
which the products of combustion are discharged. The branch passage e of the
cock is connected with the whistle or the like to be sounded. The plug f of the
cock which is preferably made hollow as shewn in Figure 2 is provided with
openings corresponding with the passages b, c, e.
It will be obvious that so long as the passages b, c are in communication the
exhaust will take place under ordinary conditions; when, however, the plugfis

page_text: turned so as to place the passages b, e in communication the whistle will be sounded,
the products of combustion being discharged through the said whistle.
In practice I find it advantageous to arrange a tank or vessel between the cock a
and the engine cylinder into which the products of combustion are exhausted so as
to obtain a pressure sufficient to give a continuous blast for the whistle.
In order to facilitate the adjustment of the plug to the required position, I
arrange on the cock a dial g, and to the hand-lever on the head of the plug
I apply a pointer moving over the said dial, the latter being marked to
indicate different positions of the said plug. When, for instance, the hand-lever h
is in the position shewn in full lines in Figure 1 the exhaust is fully open through
the passages b, c as shewn clearly in Figure 2; when, however, the hand-lever is
turned to the position indicated by the dotted lines 1, Figure 1, the exhaust takes
place through the whistle.
In practice this three-way cock may be employed for regulating the speed of the
engine or for stopping the same, the hand-lever h being moved more or less to
throttle the exhaust or to completely close the same. The dotted lines 2 in
Figure 1 indicate the position of the said hand-lever when the exhaust is nearly
closed.
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 :-
1. Sounding a whistle or the like on an explosion engine, by causing the
products of combustion to be exhausted through the said whistle, substantially as
described.
2. In an explosion engine, the arrangement of a whistle in a branch from the
exhaust pipe and of a three-way cock at the junction of the branch pipe with the
main exhaust pipe for the purpose of directing the products of combustion directly
to the atmosphere or through the whistle, substantially as set forth.
Dated this 22nd day of May 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.