Improvements in Steam Whistles.
Year: 1897

page_text: I, GILBERT SAMUEL CROSBIE, Engineer and Director of the Elsassischen
Petroleum Company, Amsterdam, Walburg im Elsass, do hereby declare the nature
of this invention to be as follows:-
This invention relates to improvements in steam whistles.
This improved steam whistle is adapted to produce various sounds and consists
of a hollow plug formed with an annular recess and holes therein, the lower end of
which plug is connected with a steam generator and carries a tube leaving an
annular space around, through which the steam can escape, as is the case in
ordinary steam whistles, when the valve at the lower end of the plug is off its
seat.
Above the said annular space the said tube has slots the upper ends of which are
acutely bevelled and produce the sound.
The aforesaid valve is connected to a piston employed inside the said tube which
by means of a rod, lever and pull handle can be lowered and raised to its normal
position by a spring at which time the aforesaid valve is upon its seat in the said
plug and thus,cuts off the steam.
The sound produced by the steam admitted can be altered in pitch at will by
moving the said piston up or down in the said tube. If the latter is made long
enough and if tuned relative to predetermined positions of the said piston various
sounds may be produced and the whistle used for signalling, for instance at sea,
in which case however means would be required, for instance a segment, on which
the lever which actuates the said piston could be locked in the required position.
Dated this 12th day of January 1897.
F. BOSSHARDT & Co.,
Agents to Applicant.
Improvements in Steam Whistles.
I, GILBERT SAMUEL CROSBIE, Engineer and Director of the Elsassischen
Petroleum Company, Amsterdam, Walburg im Elsass, do hereby declare the nature
0 of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement: -
This invention relates to improvements in steam whistles.
And in order that my invention may be more fully understood I have caused
to be appended hereunto one sheet of drawings marked with letters of reference

page_text: indicating like parts in the various figures, Fig. 1 being a longitudinal and
Fig. 2 a cross section at line A-B of the improved steam whistle.
In carrying out this invention and referring to the figures generally, the
improved steam whistle is adapted to produce various sounds and consists of a
hollow plug a formed with an annular recess and holes therein, the lower end
of which plug is connected with a steam generator by means of the pipe c and
carries a tube e leaving an annular space f between the same and the plug a
through which the steam passes when the valve d at the lower end of the plug a
is off its seat, as is the case in ordinary steam whistles.
Above the annular space f the tube e has slots y the upper ends of which are
acutely bevelled and produce the sound.
The valve d by its rod is connected to a piston 7 employed inside the tube e
which by means of a rod h, lever i and pull handle & can be lowered and is raised
to its normal position by a spring m at which time the valve d is against its seat
in the plug a and thus cuts off the steam.
The sound produced by the steam admitted can be altered in pitch at will, by
moving the piston 7 up or down in the tube e. If the latter is made wide and
long enough and if tuned to a predetermined position of the said piston relative
to different sounds the whistle may also be used for signalling, for instance at sea,
in which case however means would be required for locking the lever in the
positions corresponding to the various sounds, for instance a segment may be used
for that purpose.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I
claim is:
1st. A steam whistle consisting of a sound tube e containing a piston / con-
nected to a valve d adapted to slide with the piston and admit steam or compressed
air whilst the piston varies the pitch of the sound produced as may be required,
all substantially as set forth.
2nd. The use of the whistle specified in the preceding claim for giving predeter-
mined signals, all substantially as set forth.
Dated this 11th day of October 1897
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.