IMPROVEMENTS IN APPARATUS FOR FEEDING LOCOMOTIVE AND OTHER STEAM BOILERS OR GENERATORS, APPLI- CABLE ALSO FOR RAISING AND FORCING LIQUIDS FOR OTHER PURPOSES
Year: 1877

page_text: LETTERS PATENT to Edward Hamer and James Metcalfe, both of Aberystwyth,
in the County of Cardigan, and Edward Davies, of Llandinam, in the County
of Montgomery, for the Invention of "IMPROVEMENTS IN APPARATUS FOR
FEEDING LOCOMOTIVE AND OTHER STEAM BOILERS OR GENERATORS, APPLI-
CABLE ALSO FOR RAISING AND FORCING LIQUIDS FOR OTHER PURPOSES."
Sealed the 11th January 1878, and dated the 29th October 1877.
PROVISIONAL SPECIFICATION left by the said Edward Hamer, James
Metcalfe, and Edward Davies at the Office of the Commissioners of Patents
on the 29th October 1877.
EDWARD HAMER and JAMES METCALFE, both of Aberystwyth, in the County of
Cardigan, and EDWARD DAVIES, of Llandinam, in the County of Montgomery.
" IMPROVEMENTS IN APPARATUS FOR FEEDING, LOCOMOTIVE AND OTHER STEAM
BOILERS OR GENERATORS, APPLICABLE ALSO FOR RAISING AND FORCING LIQUIDS
FOR OTHER PURPOSES."
This Invention has reference to further improvements upon the apparatus and
injector, for which Letters Patent, No. 591/76, were granted to us, bearing date
the 14th February 1876, and consists, firstly, of an improved form of injector for
feeding boilers or for raising and forcing liquids; and, secondly, of an improved form
of the blast or exhaust pipe of steam engines for regulating the supply of exhaust
steam to the injector.
The improvements in the injector consist in forming that part known as the
combining cone (wherein the steam and water are brought into contact) in such a
manner that its area and capacity may be easily and rapidly increased or diminished
for facility in starting. For this purpose we construct that portion of the piece in
CD 077

page_text: which the combining cone is formed in two parts, capable of sliding towards and
from each other in a direction transverse to the axis of the cone, and so to increase
or diminish the area of the nozzle of the cone. Connected to the sliding part of the
piece in which the combining cone is formed is a lever actuated by a handle or hand
wheel and screw, or other suitable mechanism, so that the attendant may have it
entirely under control, and so facilitate the starting of the injector.
When ready for starting, the sliding part is drawn backward to give an increased
free section to that part of the cone; the exhaust steam and water are then admitted,
and pass through the combining cone; as soon as this is effected the sliding
part is forced forward by the lever, and forms a complete cone of the proper
size for the continuous working of the injector with exhaust steam.
The improvements in the blast or exhaust pipe of steam engines consist in closing
the orifice by a perforated plate, upon which slides or revolves another and similar
plate having corresponding holes, such holes being of sufficient area to allow the
whole of the exhaust steam to escape through them; when the injector is at work
one of the perforated plates is made to revolve or slide upon the other in order to
diminish the area of the holes to an extent corresponding to the quantity of the
exhaust steam used by the injector.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edward Hamer, James Metcalfe, and Edward Davies in the Great 2
Seal Patent Office on the 27th April 1878.
EDWARD HAMER and JAMES METCALFE, both of Aberystwyth, in the County of
Cardigan, and EDWARD DAVIES, of Llandinam, iu the County of Montgomery.
IMPROVEMENTS IN APPARATUS FOR FEEDING LOCOMOTIVE AND OTHER STEAM
BOILERS OR GENERATORS, APPLICABLE ALSO FOR RAISING AND FORCING LIQUIDS 2
FOR OTHER PURPOSES."
"
This Invention bas reference to further improvements upon the apparatus and
injector, for which Letters Patent, No. 591, AD. 1876, were granted to us, bearing
date 14th February 1876, and consists, firstly, of an improved form of injector for
feeding boilers or for raising or forcing liquids; and, secondly, of an improved form 3
of the blast or exhaust pipe of steam engines for regulating the supply of exhaust
steam to the injector.
The improvements in the injector consist in forming that part known as the
combining cone (wherein the steam and water are brought into contact) in such a

page_text: manner that its area and capacity may be easily and rapidly increased or diminished
for facility in starting. For this purpose we construct that portion of the piece in
which the combining cone is formed in two parts, capable of sliding towards and
from each other in a direction transverse to the axis of the cone, and so to increase
or diminish the area of the nozzle of the cone. Connected to the sliding part of the
piece in which the combining cone is formed is a lever actuated by a handle or hand
wheel and screw, or other suitable mechanism, so that the attendant may have it
entirely under control, and so facilitate the starting of the injector.
When ready for starting the sliding part is drawn backward to give an increased
free section to that part of the cone; the exhaust steam and water are then admitted,
and pass through the combining cone; as soon as this (that is to say, the passage of
the exhaust steam and water through the combining cone) is effected the sliding part
is forced forward by the lever, and forms a complete cone of the proper size for the
continuous working of the injector with exhaust steam.
The improvements in the blast or exhaust pipe of steam engines consist in closing
the orifice by a perforated plate, upon which slides or revolves another and similar
plate having corresponding holes, such holes being of sufficient area to allow the
whole of the exhaust steam to escape through them; when the injector is at work
one of the perforated plates is made to revolve or slide upon the other, in order to
diminish the area of the holes to an extent corresponding to the quantity of the
exhaust steam used by the injector.
Having now generally explained the principle and nature of our Invention, we
will, by the aid of the accompanying three Sheets of Drawings (in each of the
Figures of which the same letters of reference indicate the same or corresponding
parts), describe the manner in which it may be carried into effect.
Sheet 1 shews various views, in elevation and section, of our improved injector,
shewing the shape and position of the various parts.
Figure 1 is an elevation; Figures 2 and 3 are vertical sections taken at right
angles to each other; Figure 4 is a horizontal section on the line, x, x; Figure 3 and
Figure 5 is a plan of the steam inlet.
A is the exhaust steam inlet, the shape and position of the openings being shown
on Figure 5; B is a nut for adjusting the spindle C, so as to regulate the size of the
steam opening through the steam cone D; the position of this steam cone can also
be regulated by the pinion E, Figure 3, working into teeth on the outside of the
cone D; F is the outer casing, having at the top a flange to receive the steam pipe,
and on one side the feed water inlet G. Below this casing is the combining cone
The part
made in two parts, H and J, shown also in horizontal section, Figure 4.
His screwed to the casing F, and is formed so as to receive the slide J.
In manufacturing that portion of the piece in which the combining cone is formed
the two pieces H and J are firstly carefully fitted to each other; and then having
been firmly secured; the combining cone or chamber is bored by suitable boring
bits.
The moveable part J is actuated by the lever, shewn on Figures 1 and 2; this
part is represented on Figure 4, as drawn backwards, so as to leave an opening, the
closed position being represented by dotted lines; and, in Figure 3, the part J is
represented as closed, its drawn back position being represented by the dotted lines.
At the lower part of the combining cone is the overflow opening K; screwed into
the lower end of the combining cone is the discharge cone L, with flange for con-
necting it to feed pipe of boiler.
It must be understood that the details of construction may be varied, the important
feature being the construction of that portion in which the combining cone is formed
in separate parts, capable of sliding towards and from each other; and although in
the arrangements we have shown in the Drawings above referred to, only one of
the parts by which the combining cone is formed is shewn to be moveable, it will
be readily seen that two or more such parts could in a similar manner be made
moveable.

page_text: Sheet 2 shews various views of another arrangement of our improved injector,
constructed to allow of the admission of a further quantity of exhaust steam around
the lower end of the combining cone..
Figure 6 is an elevation; Figures 7 and 8, vertical sections taken at right angles
to each other; Figure 9 is a horizontal section through the combining cone. In
these views many of the parts are: similar: in construction and position to those
shown on Sheet 1, the additional parts being another or second inlet. M for the
additional exhaust steam, the circular chamber N formed round the combining cone,
the split cone O, O, made in two pieces, and forming the extra combining cone, and
the screws P, P, one of which is inserted in each half of the split cone. By this
arrangement the steam and water passing from the combining cone is superheated,
and passes through the discharge cone and into the boiler at an increased
temperature.
Sheet 3 shows our improved blast pipe and steam reservoir to be used in connection
with the injector above described.
Figure 10 is an elevation of the apparatus as arranged for fitting inside the smoke
box of a locomotive boiler; Figure 11 is a borizontal section shewing the blast pipe
and its connection to the steam reservoir; Figure 12 is a vertical section of the
same arrangement, shewing also the perforated revolving plate Q (to which the
holes in the blast pipe correspond) for regulating the exit of exhaust steam, and also
shewing the position of the pipe R leading to the injector.
.It will be seen that the area of the top portion of the blast pipe is enlarged, in
order, to fit thereon the stationary and revolving perforated plates, and so, that the
sum of the areas of the holes therein shall be equal to the area of the blast pipe
itself, as herein-after mentioned.
Figure 13 is a plan of the perforated revolving plate Q, and it is to be noted that
the number and shape of the holes may be varied, but they must correspond in
number and shape with the holes in the top of the plate on the enlarged portion of
the blast pipe, and care must be taken that the sum of the areas of these holes shall
be equal to the area of the blast pipe itself, so that there shall be no throttling of
the steam by the perforated plates when the holes are wide open.
The method of working our improved apparatus and injector is as follows:-The
perforated revolving plate Q is turned by a lever from the foot plate, the lever being
shown in Figure 10, in order to close the openings in the top of the blast pipe to an
extent corresponding to the quantity of exhaust steam used by the injector; the
exhaust steam then passes into the reservoir S, and through the pipe R to the steam
inlet at the top of the injector A, Figures 2, 3, 5, 7, and S, and into the steam cone D.
Water having been admitted into the combining cone through the water inlet G,
the sliding portion of the combining cone J is now open, having been opened by
the lever before the water and steam were turned on, so as to give a large sectional
area for the combined steam and water jet at the commencement of its flow; the
sliding portion J of the combining cone is then closed, forming a complete cone of
the proper size for the continuous working of the injector with exhaust steam.
Although we have above described our improved injector as applicable for forcing
water into steam boilers, it is evident that it may be used for raising and forcing
water and liquids for other purposes.
Having now particularly described and ascertained the nature of our said Inven-
tion, and how the same may be carried into practical operation, we would have it
understood that what we claim and desire to secure by the herein-before in part
récited Letters Patent is,-
Firstly. Our improved form of injector, in which we construct that portion of the
piece in which the combining cone is formed of separate parts, capable of sliding.
towards and from each other, as herein-before described, and illustrated in Figures
1, 2, 3, 4, 6, 7, 8, and 9, of the Drawings hereunto annexed, or any modification
thereof.
And, Secondly. The improved arrangement of blast pipe and exhaust steam

page_text: regulator, herein-before described, and illustrated in Figures 10, 11, 12, and 13, of
the Drawings hereunto annexed, or any modification thereof.
In witness whereof, I, the said Edward Hamer, for myself and the said James
Metcalfe and Edward Davies, have hereunto set my hand and seal, this
Thirteenth day of April, in the year of our Lord One thousand eight
hundred and seventy-eight,
Witness,
CHARLES BARLOW,
Patent Agent,
23, Southampton Buildings,
London,
W.C.
EDW. HAMER. (LS.)