AN IMPROVED TOY LOCOMOTIVE ENGINE
Year: 1882

page_text: LETTERS PATENT to William Hamilton Hall of No 2 Oak Villas, Bromley
Road, Beckenham, in the county of Kent; for an Invention of "AN IMPROVED
TOY LOCOMOTIVE ENGINE"
PROVISIONAL SPECIFICATION left by the said William Hamilton Hall at
the Office of the Commissioners of Patents on the 3rd November 1882.
WILLIAM HAMILTON HALL, of N° 2, Oak Villas, Bromley Road, Beckenham in
the county of Kent "AN IMPROVED TOY LOCOMOTIVE ENGINE
"
This invention relates to the construction of a toy locomotive engine in which
the motive power for driving the toy is also employed to automatically sound a
whistle by the compression or suction of air through the whistle.
In carrying out my invention the engine may be worked by one or more spring
or springs which may be of india rubber, elastic, spiral steel or other metal or suchi
as is or are used for ordinary clockwork which said spring or springs may be
attached to or connected with the axlo of a pair of the wheels of the engine which
may be of larger diameter than the other wheels of the said engine and which said
first mentioned wheels are hereinafter called the "driving wheels." The main
structure of the engine may be of tin or other suitable material or materials and
may be of any convenient size as a whole but the proportions thereof should be
according to the following:-The engine should have a lengthy body with short
tender behind fixed and forming part of the structure of the engine and the body
of the said engine should be sufficiently roomy inside to allow of a sufficiency of
air being collected therein and utilized by compression by the means hereinafter
mentioned for the purpose of sounding a whistle fixed outside the said engine.
The cross section of the said body of the engine may be either round or the upper
part round and the lower part square as most suitable and convenient to the incans
adopted for working the said engine and compressing the said air.
The driving
wheels should be placed as far forward as practicable and the whistle at the after
end of the ougine if the air is to be compressed by means of a single compression
operating in one direction only with a pair of smaller wheels.behind. And if the
-

page_text: air is to be compressed by means of a compression operating from both ends of
the engine simultaneously the driving wheel and whistle should be placed in the
centre of the length of the body of the engine with a pair of smaller wheels behind
and in front. The body of the engine should contain either a bellows fitting loosely
therein and so that when distended the greater portion or nearly the whole of the
interior space of the engine is occupied thereby or else a moveable part (in the
case of a single compression as aforesaid) or two moveable parts (in the case of a
simultaneous compression as aforesaid) fitting loosely in the said body of the engine
but sufficiently closely to prevent, as far as practicable, any escape of the air the
said bellows or moveable part or parts working backwards and forwards along the
interior length of the engine. The whistle is inserted in the top of the body of
the engine in such a position either at the after end thereof or in the centre of the
length of the body of the engine as to receive through it the compressed air.
The end or ends of the said bellows and the said moveable part or parts for
compressing the said air as aforesaid (hereinafter called the air-compressing part
or parts) may have a vent hole covered over on the inside by a piece of cloth or
other suitable material falling loosely over it so as to admit the air but to prevent
the same escaping when compressed. The said air-compressing part or parts may
have round its or their edge or edges a packing consisting of a piece of cloth felt
or other suitable material to prevent any undue escape of air between such edge or
edges and the surface of the interior of the engine. Air may be admitted freely into
such part or parts of the body of the engine as are not sought to be air tight so as to
allow of the free working of the means aforesaid for working the said engine and com-
pressing the said air. If the engine is worked by one or more india rubber, elastic
spring or springs, the spring (in the case of one) may be attached to the back of the
tender and leading through a small hole (large enough only to permit the spring to
work freely backwards and forwards) in the after end of the engine is then attached
to the centre of the working end of the bellows the other end of the bellows being
fixed to the after end of the engine or to the centre-of an air compressing part
(as the case may be) and leading through the same is then attached to the axle of
the driving wheels (hereinafter called the "main axle") the said working end of
the bellows or air compressing part being pressed close up to the after end of the
engine when the spring is attached as aforesaid. When the driving wheels are
turned round backwards the spring is wound round the main axle and the
bellows or air compressing part extended and when the wheels are let go they are
turned by the spring in a forward direction and the bellows or air compressing
part contracted the whistle being sounded by the air being forced through it.
If two india rubber clastic springs are used the engine is worked upon the
same principle as aforesaid but the springs are attached to the back of the
tender one on each side and leading through holes in the after end of the engine are
then attached to the working end of the bellows outside the same one on each sido
and lead thence to the main axle being attached at the centre of the axle so as to
obtain greater space for winding round the axle. Two springs as aforesaid are not
suitable to an air-compressing part but such air compressing part may have one
spring attached to it from tho back of the tender as aforesaid and then two springs
or two strings attached thereto outside the same one on each side and leading to
the axle. If a spiral steel or other metal spring is used it may be fitted into the
body of the engine between the working end of the bellows or air compressing
part and the main axle and a string or strings used to connect such working end
or air compressing part with the said axle when the said string or strings is or are
wound round the said axle the said spring being contracted and causing the
driving wheels to revolve and the bellows or, air compressing part to be contracted
by its pressure when let go. An ordinary.clockwork spring or springs may be
used by fitting the same transversely into the body of the engine at either or both
ends connected with an axle running lengthways through the centre of the engine
the motion of the said longitudinal axle being transmitted to the main axle by
means of cog wheels or double strings attached to each axle and the said bellows

page_text: or air compressing part being extended and contracted by means of a screw thread
on the said longitudinal axle working in a corresponding thread in the centre of
the head or working end of the bellows or air compressing part and the said
longitudinal axle may have a crank handle fixed to one end thereof outside the
after end of the engine for winding up. If the said engine is wound up by turning
the driving wheels or one of such driving wheels (one of the said wheels may be
made to fit loosely on the axle so as not to turn when the axle is wound up) a
small handle may be fitted or jointed between the spokes of the wheel to be turned
so that it can be used on the outside of the wheel for the purpose of winding the
engine and when turned inwards can be used as a stop against the bottom or some
other convenient part of the body of the engine to prevent the engine running off
until it is desired to start it. The said engine may be wound up by means of a
vertical axle passing through or partially through the body of the engine and
having a crank handle outside the said engine such vortical axle being connected
with the main axle by means of cog wheels or a string. The principle hereinbefore
described of working the said engine and compression of air therein by means of a
single compression operating in one direction only (in which case the driving
wheels are placed as far forward as practicable) with the use of a spring or springs
whether india rubber, clastic spiral steel or other metal or ordinary clockwork is
applicable to the working of the said engine and compression of air therein by
means of a compression operating from both ends of the engine simultaneously (in
which case the driving wheels are placed in the centre of the length of the body of
the engine) the principal difference of construction being that with the latter.
method the bellows have two working ends instead of one or there are two air
compressing parts instead of one (as the case may be) the said bellows or air
compressing parts when contracted being in the centre of the length of the body of
the engine and having the main axle and the whistle in the middle of or between
them and when extended reaching to or nearly to each end of the engine and with
such method of simultaneous compression if india rubber elastic is used for motive
purposes there should be two or more springs attached to each end of the
interior of the engine and to cach working end of the bellows or cach
air compressing part and crossing one another and if spiral steel or other metal is
used there must be two springs one at each end of the interior of the engine and
there may be one or more ordinary clockwork spring or springs if such is or are
used connected with a longitudinal axle as before mentioned. And whichever
kind of springs or spring aro or is used the power thereof may be transmitted to the
turning of the main axle and working the said bellows or air compressing parts by
means of a longitudinal axle as aforesaid having a screw thread working in
opposite directions on each moiety thereof with corresponding threads in the
centre of each head or working end of the bellows or air compressing parts the
motion of the said longitudinal axle being transmitted to the main axle by means
of cog wheels or double strings attached to each axle the said longitudinal axle
being revolved after being wound up for the purpose of driving the engine either
by the india rubber elastic springs (where the same are used) leading through
eyes or pulleys at each corner of the interior of the ongine and thence being.
wound round the longitudinal axle at each end or by the natural pressure of the
screw threads (or where ordinary clockwork spring or springs is or are used) by
the direct force of the spring or springs, or a plain longitudinal axle without screw
threads may be used with connecting springs or strings or other suitable means
may be adopted for applying the said principle to the working of the said engine
and compression of air therein by means of a compression operating from both
ends of the engine simultaneously. In the construction of the said engino cog-
wheels and pinion wheels or pulleys or eyes with strings working therein (which
may be fitted in any suitable known way) may be used where practicable for
lengthening the run of the engine in proportion to the working scope of the spring
or springs. In order that the engine may be wound up without the driving
wheels or either of then turning round the main axle may be fitted through a

page_text: tube the said tube having bearings on each side of the engine and the spring or
springs and winding gear being connected with the tube instead of with the axle
itself and the said tube having fitted at one end thereof a check wheel with a
small metal spring fixed on the driving wheel working with such check wheel or
the said driving wheels may both be fitted loosely on the axle the said axle having
fitted at one end thereof a check wheel with a small metal spring on the driving
wheel working therewith so that when the said tube or the said axle (as the case
may be) is turned round one way the said driving wheels, or either of them, do
not revolve but when turned round the opposite way by the motive power the
check wheel acts on or is checked with the small spring on the driving wheel and
forces it round. The check wheel may be fixed on the driving wheel instead of
the axlo in the form of a small band or collar with teeth inside and a small spring
or axle working therewith inside the same. The said engine may be wound up by
means of a crank handle fixed to the end of the main axle outside the driving
whcel. If any crank handle is used for winding up the said engine there should
be a piece of wire or other material jointed to the body of the engine in the path
of the handle when being turned so as to prevent the engine running off until it is
desired to start it and the same folding down clear of the handle when not
required as a stop. The axle of the after wheels may have its bearings at each end
of a frame or case the said frame or case being pivoted at its centre to the tender
or engine (according to the exact position of the wheels) so that the said engine
may be made to run in a circular direction or straight as desired by adjusting tho
said after wheels the said pivot being made to fit sufficiently tight so as not to be
shifted from position by the running of the engine when once adjusted. If bellows
are used for compressing the said air as aforesaid the samo may have rigid rings of
wire or other suitable material fitted inside or outside the same at convenient
distances apart to assist the effectiveness and regular working of the said bellows.
-The principle of working the said engine by moans of a spring or springs as
aforesaid and automatically sounding a whistle-by-compression of air in the body
of the engine may be adapted to the working of the said engine in the same
manner and automatically sounding a whistle by expanding or extending a bellows
or a moveable part or parts fitted into the body of the engine as aforesaid and
drawing air through an inverted whistle into the body of the engine the respective
positions of the main axle and the spring or springs and whistle in relation to one
another being altered to meet the circumstances of the case. The said engine may
also be worked without a spring or springs or in conjunction therewith by making.
the body of the engino airtight or so far airtight as is practicablo admitting the
air only through an inverted whistle and contracting the said bellows or noveable
part or parts by winding a string or strings attached to the head of the bellows
or moveable part or parts round the main axle or axle in connection therewith and
creating thereby a partial vacuum in the body of the engine the pressure of the
atmosphere (the said atmosphere first passing through and sounding the whistle)
expanding or extending the said bellows or moveable part or parts and affording
the motive power and the said bellows or moveable part or parts in this case should
have no vent hole.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Hamilton Hall in the Great Seal Patent Office on the
3rd May 1883.
WILLIAM HAMILTON HALL, of 2, Oak Villas, Bromley Road, Beckenham, in the
county of Kent
"AN IMPROVED TOY LOCOMOTIVE ENGINE
"
This invention relates to the construction of a toy locomotive engine in which
the motive power for driving the toy is also employed to automatically sound a
whistle by the compression or suction of air through the whistle.
In carrying out my invention the engine may be worked by one or more spring
or springs which may be of india rubber elastic spiral steel or other metal or such
as is or are used for ordinary clockwork which said spring or springs may be
attached to or connected with the axle of a pair of the wheels of the engine which
may be of larger diameter than the other wheels of the said engine and which said
first mentioned wheels are hereinafter called the "driving wheels." The main
structure of the engine may be of tin or other suitable material or materials and
may be of any convenient sizo as a whole but the proportions thereof should be
according to the following:-The engine should have a lengthy body with short
tender behind fixed and forming part of the structure of the engine and the body
of the said engine should be sufficiently roomy inside to allow of a sufficiency of
air being collected therein and utilised by compression by the means hereinafter
mentioned for the purpose of sounding a whistle fixed outside the said engine.
The cross section of the said body of the engine may be either round or the upper
part round and lower part square as most suitable and convenient to the means
adopted for working the said engine and compressing the said air. The driving
wheels should be placed as far forward as practicable and the whistle at the after
end of the engine if the air is to be compressed by means of a single compression
operating in one direction only with a pair of smaller wheels behind And if the
air is to be compressed by means of a compression operating from both ends of the
engine simultaneously the driving wheels and whistle should be placed in the
centre of the length of the body of the engine with a pair of smaller wheels behind
and in front The body of the engine should contain either a bellows fitting
loosely therein and so that when distended the greater portion or nearly the whole
of the interior space of the engine is occupied thereby or else a moveablo part or
piston (in the case of a single compression as aforesaid) or two moveable parts or
pistons (in the case of a simultaneous compression as aforesaid) fitting loosely in
the said body of the engine but sufficiently close to prevent as far as practicable any
escape of air the said bellows or piston or pistons working backwards and forwards
along the interior length of the engine The whistle is inserted in the top of the
body of the engine in such a position either at the after end thereof or in the
centre of the length of the body of the engine as to receive through it the com-
pressed air Tho end or ends of the said bellows and the said piston or pistons for
compressing the said air as aforesaid (hereinafter called the "air compressing part
or "parts") may have a vent hole covered over on the inside by a piece of cloth or
other suitable material falling loosely over it so as to admit the air but to prevent
the same escaping when compressed. The said air compressing part or parts may
have round its or their edge or edges a packing consisting of a piece of cloth, felt
or other suitable material to prevent any undue escape of air between such edge or
edges and the surface of the interior of engine. Air may be admitted freely
into such part or parts of the body of the engine as are not sought to be air tight
so as to allow of the free working of the means aforesaid for working the said
"

page_text: engine and compressing the said air If the engine is worked by one or more
india rubber elastic spring or springs the spring (in the case of one) may be attached
to the back of the tender and leading through a small hole (large enough only
to permit the spring to work freely backwards and forwards) in the after end of
the engine is then attached to the centre of the working end of the bellows-the
other end of the bellows being fixed to the after end of the engine-or to the centre
of an air compressing part (as the case may be) and leading through the same is
then attached to the axle of the driving wheels (hereinafter called the "main
nxle") the said working end of the bellows or air compressing part being pressed
close up to the after end of the engine when the spring is attached as aforesaid
When the driving-wheels are turned round back wards the spring is wound round
the main axle and the bellows or air compressing part extended and when the
wheels are let go they are turned by the spring in a forward direction and the
bellows or air compressing part contracted the whistle being sounded by the air
being forced through it. If two india rubber elastic springs are used the engine
is worked upon the same principle as aforesaid but the springs are attached to the
back of the tender one on each side and leading through holes in the after end
of the engine are then attached to the working end of the bellows outside the
same one on each side and lead thence to the main axle being attached at the
centre of the axle so as to obtain greater space for winding round the axle Two
springs as aforesaid are not suitable to an air compressing part but such air
compressing part may have one spring attached to it from the back of the tender
as aforesaid and then two springs or two strings attached theroto outside the same
one on each side and leading to the axle. If a spiral steel or other metal spring is
used it may be fitted into the body of the engine between the working end of tho
bellows or air compressing part and main axle and a string or strings used to
connect such working end or air compressing part with the said axle when the
said string or strings is or are wound round the said axle the said spring being
contracted and causing the driving wheels to revolve- and the bellows or air
compressing part to be contracted by its pressure when let go. An ordinary
clock work spring or springs may be used by fitting the same transversely into
the body of the engine at either or both ends connected with an axle running
lengthways through the centre of the engine the motion of said longitudinal axle
being transmitted to the main axle by means of cog wheels or double strings
attached to each axle and the said bellows or air compressing part being extended
and contracted by means of a screw thread on the said longitudinal axle working
in a corresponding thread in centre of the head or working end of the bellows or
air compressing part And the said longitudinal axle may have a crank handle fixed
to one end thereof outside the after end of the engine for winding up If the said
engine is wound up by turning the driving-wheels or one of such driving wheels
(one of the said wheels may be made to fit loosely on the axle so as not to turn
when the axle is wound up) a small handle may be fitted or jointed between the
spokes of the wheel to be turned so that it can be used on the outside of the wheel
for the purpose of winding the engine and when turned inwards can be used as
a stop against the bottom or some other convenient part of the body of the engine
to prevent the engine running off until it is desired to start it. The said engine
may be wound up by means of a vertical axle passing through or partially through
the body of the engine and having a crank handle outside the said engine such
vertical axle being connected with the main axle by means of cog wheels or a
string. The principle herein before described of working the said engine and com-
pression of air therein by means of a single compression operating in one direction
only (in which case the driving wheels are placed as far forward as practicable) with
the use of a spring or springs whether india rubber elastic spiral steel or other
metal or ordinary clockwork is applicable to the working of the said engine and
compression of air therein by means of a compression operating from both ends of
the engine simultaneously (in which case the driving wheels are placed in the
centre of the length of the body of the engine) the principal difference of

page_text: construction being that with the latter method the bellows have two working ends
instead of one or there are two air compressing parts instead of one (as the case
may be) the said bellows or air compressing parts when contracted being in the
centre of the length of the body of the engine and having the main axlo and
whistle in the middle of or between them and when extended reaching to or nearly
to each end of the engine. And with such method of simultaneous compression if
india rubber elastic is used for motive purposes there should be two or more springs
attached to each end of the interior of the engine and to each working end of the
bellows or each air compressing part and crossing one another and if spiral
steel or other metal is used there must be two springs one at each end of the
interior of the engine and there may be one or more ordinary clockwork spring or
springs if such is or are used connected with a longitudinal axle as before
mentioned And whichever kind of springs or spring are or is used the power
thereof may be transmitted to the turning of the main axle and working the said
hellows or air compressing parts by means of a longitudinal axle as aforesaid
having a screw thread working in opposite directions on each moiety thereof with
corresponding threads in the centre of each head or working end of the bellows or
air compressing parts the motion of the said longitudinal axle being transmitted
to the main axlo by means of cog wheels or double strings attached to each axle
the said longitudinal axle being revolved after being wound up for the purpose of
driving the engine either by the india rubber elastic springs (where same are used)
leading through eyes or pulleys at each corner of the interior of the engine and
thenco being wound round the longitudinal axle at each end or by the natural
pressure of screw threads or (where ordinary clockwork spring or springs is or aro
used) by the direct force of the spring or springs or a plain longitudinal axlo
without screw threads may be used with connecting springs or strings: Or other
suitable means may be adopted for applying the said principle to the working of
the said engine and compression of air therein by means of a compression operating
from both ends of the engine simultaneously. In the construction of the said
engine cog wheels and pinion wheels or pulleys or eyes with strings working
therein (which may be fitted in any suitable known way) may be used where
practicable for lengthening the run of the engine in proportion to the working
scope of the spring or springs. In order that the engine may be wound up
without the driving wheels or either of them turning round the main axle may be
fitted through a tube the said tube having bearings on each side of the engine and
the spring or springs and winding gear being connected with the tube instead of
with the axle itself and the said tube having fitted at one end thereof a check
wheel with a small metal spring fixed on the driving wheel working with such
check wheel or the said driving wheels may both be fitted loosely on the axle the
said axle having fitted at one end thereof a check wheel with a sinall metal spring
on the driving wheel working therewith so that when the said tube or the said axle
(as the case may be) is turned round one way the said driving wheels or either of them
do not revolve but when turned round the opposite way by the motive power the
check wheel acts on or is chocked with the small spring on the driving wheel and
forces it round. The check wheel may be fixed on the driving wheel instead of the
axle in the form of a small band or collar with teeth inside and a small spring or axlo
working therewith inside the same. The said engine may be wound up by means of a
crank handle fixed to the end of the main axle outside the driving wheel. If any crank
handle is used for winding up the said engine there should be a picco of wire or
other material jointed to the body of the engine in the path of the handle when
being turned so as to prevent the engine running off until it is desired to start it
and the same folding down clear of the handle when not required as a stop. Tho
said engine inay have a stop or brake and starting crank handle by means of a
wire rod running along the outside of the body of the engine and fitting loosely in.
two bearings for the same one opposite one of the driving wheels where tho end
of the said rod is bent outwards from the body of the engine so that it can bo
introduced between the spokes of the driving wheel as a brake and the other of the

page_text: said bearings being at the after end of the said engine body where the other end
of the said rod is bent so as to form a crank handle by moving which the brake is
controlled. The axle of the after wheels may have its bearings at each end of a
frame or case the said frame or case being pivoted at its centre to the tender or
engine (according to the exact position of the wheels) so that the said engine may
be made to run in a circular direction or straight as desired by adjusting the said
after wheels the said pivot being made to fit sufficiently tight so as not to be
shifted from position by the running of the engine when once adjusted.. If bellows
are used for compressing the said air as aforesaid the same may have rigid rings of
wire or other suitable material fitted inside or outside the same at convenient
distances apart to assist the effectiveness and regular working of the said bellows.
And the said bellows may have india rubber elastic bands also around them at
distances in between. the said rigid rings to further assist the effectiveness and
regular working of the said bellows. And the power of the said elastic bands
may be utilized for motive purposes either alone or in conjunction with another
or other spring or springs. The principle of working the said engine by means of
a spring or springs as aforesaid and automatically sounding a whistle by com-
pression of air in the body of the engine may be adapted to the working of the
said engine in the same manner and automatically sounding a whistle by expanding
or extending a bellows or a piston or pistons fitted into the body of the engine as
aforesaid and drawing air through an inverted whistle into the body of the engine
the respective positions of the main axle and the spring or springs and whistle in
relation to one another being altered to meet the circumstances of the case. The
said engine may also be worked without a spring or springs or in conjunction
therewith by making the body of the engine airtight or so far airtight as is
practicable admitting the air only through an inverted whistle and contracting the
said bellows or piston or pistons by winding a string or strings attached to the
head-of the bellows or piston or pistons round main axle or axle in connection
therewith and creating thereby-a-partial vacuum in the body of the engine the
pressure of the atmosphere (the said atmosphere first passing through and sounding
the whistle) expanding or extending the said bellows or piston or pistons and
affording the motive power and the said bellows or piston or pistons in this case
should have no vent-hole.
A dual whistle sounding may be obtained by making the body of the engine as
air-tight as practicable and, by means of bellows or a piston or pistons as aforesaid
worked by a spring or springs as aforesaid, forcing the air out through a whistle
outside one part of the body of the said engine and at the same time drawing the
air in through a whistle fixed inside the other part of the body of the said engine
the said two parts of the body of the engine being kept airtight in relation one to
the other. And the body of the said engine being made sufficiently air tight the
said air may be forced out and drawn in respectively for the purpose of sounding
any whistle or whistles as aforesaid either by contracting the bellows by means of
a spring or springs as aforesaid or by expanding the same by means of any such
spring or springs.
The accompanying drawing serves to illustrate three methods of carrying out
my invention. In figures 1, and 3, A in figure 1 is the whistle and in figure 3,
the aperture in the top of the engine to receive the same. B, in both figures is
a metal rin fixed inside the after end of the engine to receive around it the soft
material of the bellows. D, is the working end of the bellows. E, is the main axle
and F, represents the india rubber elastic springs fastened to the main axle and to
the working end of the bellows and passing through holes in the back of the engine
each side of the said metal rim and thence round hooks G, (shewn in figure 3)
and tied together at the back of the tender. H, in figure 3, is a small handle for
winding up the engine by turning the wheel upon which it is fixed. I, in figure 1,
is a wire rod with brake at one end and starting crank handle at the other end
thereof
In figures 2, and 4, A, and B, in figure 2, are respectively the whistle and a

page_text: metal case at the top of the engine to receive the said whistle. B, in tigure 4, is the
aperture in the top of the engine for the said whistle. C, in both figures is a disc
having a broad rim D, around it to receive a packing so as to make D, fit close
into the body of the engine. E, is the main axle. F, is a metal rim fixed partially
round interior of the body of the engine at the top and bottom for one end of the
spiral steel spring G, (shewn in figure 2) to rest against, the other end resting
against the said disc; H, represents strings fastened to the main axle and then to
the said disc as shewn in figure 4, and I in the last mentioned figuro is a handle for
winding as in the first illustration. The said steel spring is not shewn in figure 4.
In figures 5, and 6, A in figure 5 is the whistle; B, in both figures is a disc
having a broad rim with a packing C, fitting closely into the body of the engine.
D, is the main axle having upon it a pinion wheel with an india rubber covering
around its periphery. E, is a roller axle having upon it a wheel F, to engage with
the pinion wheel on D. G, is a string fastened to the said disc and to the india
rubber elastic spring H, the said elastic spring being in turn fastened to the back
of the engine as shewn in figure 6. The said string is then led round the said
roller axle E, then through an eye in the head of the body of the engine and then
through a hole in the top of the said engine body near the funnel and then fastened
to the draw piece K, (shewn in figure 5) in the manner shewn in figure 5. The
bearings of the roller axle E, are slotted as shewn at I, in figure 5, so that when
the engine is being prepared for running by drawing the piece K, (which fits
loosely in the groove J, shewn in figure 5) with the said string attached to it to
the after end of the groove J, the roller axle E, with the wheel F, is drawn forward
and disengaged from the pinion wheel on the main axle, the tension of the said
string when the engine is started-by releasing K-drawing back the roller axle E,
and reengaging the said wheel F, with the said pinion wheel. The periphery of
the said wheel F, may have an india rubber covering or may be simply roughened
to prevent the same slipping on the said pinion wheel.
Having thus described my said invention and the best means I am acquainted
with for carrying the same into effect I would have it understood that what I
claim is:
The improved automatic whistling toy engines described consisting of the body
of the engine having within it a bellows or a disc or discs operated by means of
springs and by a string or elastic wound upon the main axle or upon an axle in
gear therewith, combined with the whistle all as shown and set forth
In Witness whereof I the said William Hamilton Hall have hereto set my
hand and seal this third day of May in the year of our Lord one thousand
eight hundred and eighty three