Improvements in Locomotive Engines.
Year: 1893

page_text: Date of Application, 28th June, 1893
Complete Specification Left, 30th Apr., 1894-Accepted, 2nd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Locomotive Engines.
We, JAMES MUSGRAVE, and GEORGE DIXON, both of Globe Iron Works,
Bolton, Lancashire, Engineers, and EDWARD FIELD and FRANCIS SANDERS
MORRIS, both of Chandos Chambers, Buckingham Street, Adelphi, London W.C.
Consulting Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to the arrangements for heating air in locomotive
engines wherein both hot air and steam are used in the engine-cylinders. One
method of so using air and steam is described in the Specification of the application
for Letters Patent No. 17372 dated 29th September 1892 but the present inven-
tion might also be employed in other cases where hot air is to be used in the
cylinders of locomotive engines.
The object of this invention is to enable air to be suitably heated in a convenient
way by the hot gases that have done duty in heating water and generating steam
in the locomotive boiler and are on their way from the boiler flue tubes to the
uptake or chimney. For this purpose according to one arrangement there is
mounted on the engine frame in front of the smoke-box and so as to form a cover
thereto a tubular heater constructed with tubes that open into the smoke-box so as
to receive therefrom the hot gases that have passed from the boiler flue tubes into
the smoke-box and which are prevented from escaping in the ordinary way from
the smoke-box direct into the up-take by means of a partition or diaphragm
arranged in the smoke-box above the ends of the highest of the boiler flue tubes.
The hot gases passing through the heater tubes already mentioned are caused to
ascend and to return through other tubes of the heater into the smoke-box above
the partition or diaphragm and thence to the up-take or chimney. Air to be
heated is by any suitable means such as a pump or blower or turbine worked by
the blast of the exhaust or by live steam caused to enter the heater and to pass
therethrough in contact with the tubes heated by the hot gases and thence is con-
ducted away from the heater for use as required in the engine cylinders.
A heater such as described may occupy a fixed position but according to a
convenient arrangement it is adapted to turn on a hinge pin or joint so that it may
when closed be by a suitable fastening secured in place at the front end of the
smoke-box and when unfastened may be turned on the hinge or joint into a
convenient position to afford ready access to the boiler and heater tubes.
According to another arrangement the heater is made of saddle form and
mounted on the engine boiler or it may be placed in any other convenient position
on the engine or on the tender.
1000

page_text: Improvements in Locomotive Engines.
We, JAMES MUSGRAVE, and GEORGE DIXON, both of Globe Iron Works,
Bolton, Lancashire, Engineers, and EDWARD FIELD and FRANCIS SANDERS
MORRIS, both of Chandos Chambers, Buckingham Street, Adelphi, London, W.C.
Consulting Engineers, 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 :-
This invention has reference to the arrangements for heating air in locomotive
engines wherein both hot air and steam are used in the engine-cylinders. One
method of so using air and steam is described in the Specification of Letters
Patent No. 17372 dated 29th September 1892, but the present invention might
also be employed in other cases where hot air is to be used in the cylinders of
locomotive engines.
The object of this invention is to enable air to be suitably heated in a convenient
way by the hot gases that have done duty in heating water and generating steam
in the locomotive boiler and are on their way from the boiler flue tubes to the
uptake or chimney. For this purpose according to one arrangement there is
mounted on the engine frame in front of the smoke-box and so as to form a
cover thereto a tubular heater constructed with tubes that open into the smoke-
box so as to receive therefrom the hot gases that have passed from the boiler flue
tubes into the smoke-box and which are prevented from escaping in the ordinary
way from the smoke-box direct into the uptake by means of a partition or
diaphragm arranged in the smoke-box above the ends of the highest of the boiler
flue tubes. The hot gases passing through the heater tubes already mentioned
are caused to ascend and to return through other tubes of the heater into the
smoke-box above the partition or diaphragm and thence to the uptake or chimney.
Air to be heated is, by any suitable means such as a pump or blower or turbine
worked by the blast of the exhaust or by live steam, caused to enter the heater
and to pass therethrough in contact with the tubes heated by the hot gases,
and thence is conducted away from the heater, for use as required in the engine
cylinders.
A beater such as described may occupy a fixed position but according to a
convenient arrangement it is adapted to turn on a hinge pin or joint so that it
may when closed be by a suitable fastening secured in place at the front end
of the smoke-box and when unfastened may be turned on the hinge or joint
into a convenient position to afford ready access to the boiler and heater tubes.
According to another arrangement the heater is made of saddle form and mounted
on the engine boiler or it may be placed in any other convenient position on the
engine or on the tender.
Referring to the annexed sheet of illustrative drawings,
Fig. 1 shews in side elevation so much of a locomotive engine as is necessary to
illustrate the application thereto of this invention;
Fig. 2 is a side elevation partly in central longitudinal vertical section.
Fig. 3 is an end elevation partly in transverse section through the heater.
A A are the engine cylinders; they are provided with admission valves for heated
air in accordance with the Specification of our previous Patent No. 17372
A.D. 1892. Upon the frame B in front of the boiler C is mounted the heater
which comprises a shell D, tube plates E, F, tubes G G¹, and end cover H
enclosing space I. K is a horizontal diaphragm partly separating the space
traversed by the tubes G from that traversed by the tubes G¹.
L is a partition or diaphragm arranged in the smoke-box M above the ends of the
highest of the boiler flue tubes N and above the highest of the heater tubes G so that

page_text: hot gases entering the smoke-box from the boiler tubes N are caused to pass forward
through the lower series of heater tubes G into the space I and thence to return.
through the upper series of tubes G¹ into the smoke-box above the partition or
diaphragm L from which they escape through the chimney O. P is a blower of
any suitable type fixed upon a platform Q in front of the heater and driven in any
suitable manner from a moving part of the locomotive. The cold air delivered
from the blower passes by a suitably arranged pipe S to the rear end of the upper
space traversed by the tubes G', and after traversing this space in a forward
direction and returning by the lower space traversed by the tubes G, passes in a
highly heated condition through pipes or passages T to the engine cylinders A
wherein it is utilized with steam in any convenient way, it may be in the manner
described in the Specification of our said previous Patent. The blower, if desired,
may be placed upon the rearward portion of the locomotive, or upon the tender,
when one
used, the cold air delivered therefrom being then led forward to the
heater by a pipe S' shown in dotted lines in Fig. 1.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. A locomotive engine constructed with apparatus whereby the hot gases that
have done duty in heating water and generating steam in the locomotive boiler are
on their way from the boiler flue tubes to the uptake or chimney utilized substan-
tially as hereinabove described to suitably heat air to be used with steam in the
engine cylinders.
2. In a locomotive engine the combination and arrangement of parts constituting
the improved apparatus constructed arranged and applied as hereinabove described
with reference to the accompanying illustrative drawings for supplying heated air
to be used with steam in the engine cylinders as set forth.
3. A locomotive engine constructed with an air heater adapted to turn on a
hinge pin or joint so that it may when closed be by a suitable fastening secured in
place at the front end of the smoke box and when unfastened may be turned on
the hinge pin or joint into a convenient position to afford ready access to the boiler
and heater tubes.
Dahir 20th day of A 1901