Improvements in Apparatus suitable for Preparing Syrup for Use in the Manufacture of Sweet-meats and for Condensing, Concen- trating, and Evaporating Liquids.
Year: 1898

page_text: Date of Application, 9th Sept., 1808
Complete Specification Left, 10th July, 1899-Accepted, 9th Dec., 1899
PROVISIONAL SPECIFICATION.
Improvements in Apparatus suitable for Preparing Syrup for Use in
the Manufacture of Sweet-meats and for Condensing, Concen-
trating, and Evaporating Liquids.
I, EDWARD SHAW, of Broad Street House, Broad Street, in the City of London,
Engineer, do hereby declare the nature of this invention to be as follows:-
In the Specification of my former application for Letters Patent No. 5803
dated March 9, 1898 apparatus is described in which syrup is cooked whilst pass-
ing through an externally heated tube in which a low-pressure is maintained
and which delivers the cooked syrup and the vapour driven off by the heat into a
chamber whence the vapour is removed by an air pump, the syrup being drawn
off by a pump or intermittently discharged by means of a pair of valves that control
communication between a pocket and the collecting chamber and the exterior
respectively, the arrangement being such that the pocket is first placed in com-
munication with the collecting chamber and charged with cooked syrup, and then,
communication with the collecting chamber closed and the pocket placed in com-
munication with the exterior of the apparatus and the contents of the pocket
discharged.
Now the present invention has reference to improvements in apparatus of the
kind referred to which is suitable for preparing syrup for use in the manufacture
of sweetmeats and for condensing, concentrating and evaporating other liquids.
In order that the nature of the said invention may be understood I will describe, by
reference to the accompanying drawings and by way of example only, an apparatus
in which my improvements are included, Figs. 1 and 2 being elevations thereof
at right angles to each other. Fig. 3 is a vertical section of the cooking coil and
collecting chamber drawn to a larger scale. Fig. 4 is a horizontal section of the
lower part thereof, and Figs. 5, 6, 7 and 8 are detail views hereinafter referred to.
1 is a tank for containing uncooked syrup which is fed therefrom by a pump 2
to the cooking coil 3 which is contained within a dome-shaped steam chamber 4.
The coil 3 discharges into a collecting chamber 5 that is also contained within the
steam chamber 4 and the upper portion of which is connected by a pipe 6 provided
with a valve 7 to a jet condenser 8 which communicates with an air pump 9. The
chamber 5 has a discharge passage 10 that is controlled by an outwardly opening
valve 11 normally kept against its seat by a spring 11ª, or, it may be, by a weight
or by other means. The valve 7, which is shown in section in Fig. 5, is adapted
to be operated intermittently so as to close for a given period communication
between the collecting chamber and the condenser and the air pump, thus
temporarily preventing the steam generated within the coil from escaping from
the chamber 5, and thus causing an increase of pressure therein; the pressure of
the steam on the syrup eventually overcomes the resistance of the valve 11, and
forces the cooked syrup through the outlet 10 onto a cooling table or slab 12.
After the syrup has been discharged the valve 7 is again operated so as to
re-establish communication between the chamber 5 and the condenser and air

page_text: pump, thereby causing the pressure in said chamber to be reduced below that of
the atmosphere and the valve 11 to be again closed. The valve 7 may be operated
periodically in any convenient way, but, in the example illustrated, the feed
pump 2 is provided with means (illustrated in Figs. 6, 7 and 8) for imparting
motion to the valve 7.
These means comprise a couple of ratchet wheels 12, 13, which are driven by
pawls 14 carried by levers 15 that are rocked by tappet-levers 16 and tappets on
the piston rods of the pump.. The ratchet wheels carry driving studs 12, 13ª
that come into contact with pins or abutments 17 on opposite sides of the fulcrum
of one of two levers 18ª, 18b that are coupled together by a stirrup piece 19 that
is connected by a rod or link 20 with the spindle of the valve 7. The arrangement
is such that the valve is opened and closed at the required times. Figs. 6, 7,
and 8 are respectively a sectional end elevation, a side elevation with the lever 15
removed and a side elevation with the lever 15 and the wheel 12 removed. If
desired, the valve 11 may be arranged to be similarly operated at the required
times instead of operating automatically.
The steam chamber 4 is attached by bolts to a base plate 4", which is formed
with a pocket or well leading to the outlet 10 and with the necessary passages
and unions for connecting the chamber 5, which is preferably a copper cylinder,
the coil 3, the pipe 6 and a steam supply pipe to the chamber 4. The mouth of
the pipe 6 is covered by a baffle plate 6 to prevent the entry of bubbles of syrup.
The seat of the valve 11 is formed as shown so as to carry the valve and its spring
and is adapted to be screwed in and out of the base plate 4". It will thus be
seen that both the coil 3 and the valve 11 can be easily inspected and repaired.
The condenser is preferably formed in the column supporting the cooking chamber.
It is to be understood that some of my improvements may be employed without
others and that the construction and arrangement of the parts may be modified.
Dated this 9th day of September 1898.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.
Improvements in Apparatus suitable for Preparing Syrup for Use in
the Manufacture of Sweet-meats and for Condensing, Concen-
trating, and Evaporating Liquids.
I, EDWARD SHAW, of Broad Street House, Broad 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:-
In the Specification of my former application for Letters Patent No. 5803
dated March 9, 1898 apparatus is described in which syrup is cooked whilst pass-
ing through an externally heated tube in which a low-pressure is maintained
and which delivers the cooked syrup and the vapour driven off by the heat into a
chamber whence the vapour is removed by an air pump, the syrup being drawn
off by a pump or intermittently discharged by means of a pair of valves that control
communication between a pocket and the collecting chamber and the exterior
respectively, the arrangement being such that the pocket is first placed in com-
munication with the collecting chamber and charged with cooked syrup, and then,

page_text: communication with the collecting chamber closed and the pocket placed in com-
munication with the exterior of the apparatus and the contents of the pocket
discharged.
The
Now the present invention has reference to improvements in apparatus of the
kind referred to which is suitable for preparing syrup for use in the manufacture
of sweetmeats and for condensing, concentrating and evaporating other liquids.
In order that the said invention may be understood I will describe, by
reference to the accompanying drawings and by way of example only, an apparatus
in which my improvements are included, Figs. 1 and 2 being elevations thereof
at right angles to each other. Fig. 3 is a vertical section of the cooking coil and
collecting chamber drawn to a larger scale. Fig. 4 is a horizontal section of the
lower part thereof, and Figs. 5, 6, 7 and 8 are detail views hereinafter referred to.
1 is a tank for containing uncooked syrup which is fed therefrom by a pump 2
to the cooking coil 3 which is contained within a dome-shaped steam chamber 4.
The coil 3 discharges into a collecting chamber 5 that is also contained within the
steam chamber 4 and the upper portion of which is connected by a pipe 6 provided
with a valve 7 to a jet condenser 8 which communicates with an air pump 9.
chamber 5 has a discharge passage 10 that is controlled by an outwardly opening
valve 11 normally kept against its seat by a spring 11ª, or, it may be, by a weight
or by other means. The valve 7, which is shown in section in Fig. 5, is adapted
to be operated intermittently so as to close for a given period communication
between the collecting chamber 5 and the condenser and the air pump, thus
temporarily preventing the steam generated within the coil from escaping from
the chamber 5, and thus causing an increase of pressure therein; the pressure of
the steam on the syrup eventually overcomes the resistance of the valve 11, and
forces the cooked syrup through the outlet 10 onto a cooling table or slab 12.
After the syrup has been discharged the valve 7 is again operated so as to
re-establish communication between the chamber 5 and the condenser and air
pump, thereby causing the pressure in said chamber to be reduced below that of
the atmosphere and the valve 11 to be again closed. The valve 7 may be operated
periodically in any convenient way, but, in the example illustrated, the feed
pump 2 is provided with means (illustrated in Figs. 6, 7 and 8) for imparting
motion to the valve 7.
These means comprise a couple of ratchet wheels 12, 13, which are driven by
pawls 14 carried by levers 15 that are rocked by tappet-levers 16 and tappets on
the piston rods of the pump.. The ratchet wheels carry driving studs 12ª, 13"
that come into contact with pins or abutments 17 on oposite sides of the fulcrum
of one of two levers 18ª, 18b that are coupled together by a stirrup piece 19 that
is connected by a rod or link 20 with the spindle of the valve 7. The arrangement
is such that the valve is opened and closed at the required times. Figs. 6, 7,
and 8 are respectively a sectional end elevation, a side elevation with the lever 15
removed and a side elevation with the lever 15 and the wheel 12 removed. If
desired, the valve 11 may be arranged to be similarly operated at the required
times instead of operating automatically.
The steam chamber 4 is attached by bolts to a base plate 4", which is formed
with a pocket or well leading to the outlet 10 and with the necessary passages
and unions for connecting the chamber 5, which is preferably a copper cylinder,
the coil 3, the pipe 6 and a steam supply pipe to the chamber 4. The mouth of
the pipe 6 is covered by a baffle plate 6 to prevent the entry of bubbles of syrup.
The seat of the valve 11 is formed as shown so as to carry the valve and its spring
and is adapted to be screwed in and out of the base plate 4. It will thus be
seen that both the coil 3 and the valve II can be easily inspected and repaired.
The condenser is preferably formed in the column supporting the cooking chamber.
The chamber 4 is detachably connected by bolts to a base plate 4ª, so that it can
be readily lifted and the coil 3 and collecting chamber 5 exposed for inspection
or repair. The base plate 4ª has cast on its upperside a circular rim 4b into which
the copper cylinder which has brazed to it a screw-threaded collar is screwed:

page_text: 4° and 4t
it is also formed with a passage 4° leading from the coil 3 to the chamber 5 and
with a passage 4d by which the pipe 6, whose upper end opens into the upper
part of the chamber 5 and is provided with a baffle plate 6 to prevent the entry
of bubbles of syrup, is placed in communication with the condenser.
are passages or apertures through the base plate 4" through which syrup and steam
respectively are supplied to the coil 3 and to the chamber 4. The outlet 10 is at
the bottom of a depression or well formed in the base plate 4 and in which the
syrup collects. The seat of the valve 11 is formed with an inwardly extending
portion that serves to support the valve spindle and its spring 11" as shown, the
arrangement being such that the seat and valve can be screwed into and out of the
base plate. The condenser is preferably formed in the column supporting the
cooking chamber.
It is to be understood that some of my improvements may be employed without
others and that the construction and arrangement of the parts may be modified.
It is found in practice that with apparatus such as described it is desirable in
order to prevent the syrup being forced through the feed pump and cooking
coil by the pressure of the atmosphere, to provide the discharge pipe of the feed
pump with a suitably loaded valve that will open when the pressure against it
exceeds atmospheric pressure but I do not make any claim to this feature in the
present application as it is included in a later application filed by me viz. No. 21300
dated 10 October 1898.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:
1. Apparatus for cooking, concentrating and evaporating liquids comprising
an externally heated tube, a chamber into which said tube discharges and which
is formed with a liquid discharging aperture, means for removing vapour from
said chamber and causing a low pressure therein and in the externally heated
tube, and means for periodically causing an increased pressure in said chamber,
as set forth.
2. Apparatus for cooking, concentrating and evaporating liquids comprising an
externally heated tube, a chamber into which said tube discharges and which is
formed with a liquid discharging aperture, means for removing vapour from
said chamber and causing a low pressure therein and in the externally heated
tube, and a valve whereby communication between the chamber and the vapour
removing means is periodically closed as set forth.
3. Apparatus for cooking, concentrating and evaporating liquids comprising an
externally heated tube, a chamber into which said tube discharges and which is
formed with a liquid discharging aperture closed by an outwardly opening loaded
valve, means for removing vapour from said chamber and causing a low
pressure therein and in the externally heated tube, and means for periodically
causing an increased pressure therein, as set forth.
4. Apparatus for cooking, concentrating and evaporating liquids comprising an
externally heated tube, a pump for feeding liquid thereto, a chamber into which
said tube discharges and which is formed with a liquid discharging aperture,
means for removing vapour from said chamber and causing a low pressure therein
and in the externally heated tube, and a valve connected with said feed pump
and by the closing of which the pressure in the chamber is periodically caused
to increase, as set forth.
5. Apparatus for cooking, concentrating and evaporating liquids comprising an
externally heated tube, a pump for feeding liquid thereto, a chamber into which
said tube discharges and which is formed with a liquid discharging aperture, a
vapour removing or air pump, a valve connected with the feed pump and
periodically closing communication between the air pump and chamber, as set
forth.
6. Apparatus for cooking, concentrating and evaporating liquids comprising

page_text: a tube, a collecting chamber into which said tube discharges and a steam chamber
in which both tube and collecting chamber are contained, as set forth.
7. Apparatus for cooking, concentrating and evaporating liquids comprising a
tube, a collecting chamber and a steam chamber enclosing said tube and collecting
chamber and consisting of a base plate to which said tube and collecting chamber
are attached and a dome or cover detachably connected to said base-plate, as set
forth.
8. Apparatus for cooking, concentrating and evaporating liquids comprising a
coiled tube and a collecting chamber communicating therewith and formed with
a liquid discharging aperture, both said tube and chamber being contained within
a steam-charged dome or cover, a liquid feeding pump, an air or vapour pump,
a valve controlling communication between said chamber and the air or vapour
pump and connected to mechanism driven by the feed pump whereby it is
periodically closed as set forth.
9. Apparatus for cooking, concentrating and evaporating liquid comprising a
tank 1, feed pump 2, coil 3, steam chamber 4, collecting chamber 5 with liquid
discharging aperture 10, vapour pipe 6 fitted with baffle 6 and leading to a con-
denser 8 and an air pump 9, as set forth.
10. Apparatus for cooking, concentrating and evaporating liquid, comprising
a tank 1, a feed pump 2, coil 3, a collecting chamber 5 with valved liquid dis-
charge aperture 10, a steam chamber 4 enclosing both coil 4 and chamber 5, a
vapour pipe 6 fitted with baffle 6 and leading to a jet condenser 8 arranged in
the stand of the apparatus, an air pump 9, and a valve 7 that controls communi-
cation between chamber 5 and condenser 8 and is operated by the feed pump 2
so as to periodically close said communication as set forth.
11. Apparatus for cooking, concentrating and evaporating liquids, comprising
a liquid feeding pump, an externally heated tube, a collecting chamber into
which said tube discharges and which has a liquid discharging aperture, a vapour
or air pump, a valve controlling communication between said collecting chamber
and vapour or air pump, a rod connecting said valve to a lever provided on
opposite sides of its fulcrum with a pin or abutment, a couple of wheels driven by
said feed pump and each carrying a stud, the pins or abutments being arranged
respectively in the paths of the said studs, which come successively in contact with
their respective studs and intermittently rock the lever and open and close the
valve as and for the purpose set forth.
12. Apparatus for cooking, concentrating and evaporating liquids constructed
arranged and operating substantially as described with reference to and shown in
the accompanying drawings.

page_text: a tube, a collecting chamber into which said tube discharges and a steam chamber
in which both tube and collecting chamber are contained, as set forth.
7. Apparatus for cooking, concentrating and evaporating liquids comprising a
tube, a collecting chamber and a steam chamber enclosing said tube and collecting
chamber and consisting of a base plate to which said tube and collecting chamber
are attached and a dome or cover detachably connected to said base-plate, as set
forth.
8. Apparatus for cooking, concentrating and evaporating liquids comprising a
coiled tube and a collecting chamber communicating therewith and formed with
a liquid discharging aperture, both said tube and chamber being contained within
a steam-charged dome or cover, a liquid feeding pump, an air or vapour pump,
a valve controlling communication between said chamber and the air or vapour
pump and connected to mechanism driven by the feed pump whereby it is
periodically closed as set forth.
9. Apparatus for cooking, concentrating and evaporating liquid comprising a
tank 1, feed pump 2, coil 3, steam chamber 4, collecting chamber 5 with liquid
discharging aperture 10, vapour pipe 6 fitted with baffle 6 and leading to a con-
denser 8 and an air pump 9, as set forth.
10. Apparatus for cooking, concentrating and evaporating liquid, comprising
a tank 1, a feed pump 2, coil 3, a collecting chamber 5 with valved liquid dis-
charge aperture 10, a steam chamber 4 enclosing both coil 4 and chamber 5, a
vapour pipe 6 fitted with baffle 6 and leading to a jet condenser 8 arranged in
the stand of the apparatus, an air pump 9, and a valve 7 that controls communi-
cation between chamber 5 and condenser 8 and is operated by the feed pump 2
so as to periodically close said communication as set forth.
11. Apparatus for cooking, concentrating and evaporating liquids, comprising
a liquid feeding pump, an externally heated tube, a collecting chamber into
which said tube discharges and which has a liquid discharging aperture, a vapour
or air pump, a valve controlling communication between said collecting chamber
and vapour or air pump, a rod connecting said valve to a lever provided on
opposite sides of its fulcrum with a pin or abutment, a couple of wheels driven by
said feed pump and each carrying a stud, the pins or abutments being arranged
respectively in the paths of the said studs, which come successively in contact with
their respective studs and intermittently rock the lever and open and close the
valve as and for the purpose set forth.
12. Apparatus for cooking, concentrating and evaporating liquids constructed
arranged and operating substantially as described with reference to and shown in
the accompanying drawings.