IMPROVEMENTS IN MACHINERY OR APPARATUS FOR TREATING DEXTRINE, MALTOSE, GLUCOSE, MALT WORTS, HOPPED AND UNHOPPED, AND ANALOGOUS SUBSTANCES." SP
Year: 1880

page_text: LETTERS PATENT to Alexander Low Bruce, of the Firm of William Younger
and Company, Brewers, George Stenhouse, Brewer to the said Firm, William
McCowan, and Andrew Haddow, all of the City and County of Edinburgh,
North Britain, for an Invention of "IMPROVEMENTS IN MACHINERY OR
APPARATUS FOR TREATING DEXTRINE, MALTOSE, GLUCOSE, MALT WORTS,
HOPPED AND UNHOPPED, AND ANALOGOUS SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Alexander Low Bruce,
George Stenhouse, William McCowan, and Andrew Haddow at the Office of
the Commissioners of Patents on the 27th January 1880.
ALEXANDER Low BRUCE, of the Firm of William Younger and Company,
Brewers, GEORGE STENHOUSE, Brewer to the said Firm, WILLIAM MOCOWAN, and
ANDREW HADDOW, all of the City and County of Edinburgh, North Britain.
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR TREATING DEXTRINE,
MALTOSE, GLUCOSE, MALT WORTS, HOPPED AND UNHOPPED, AND ANALOGOUS
SUBSTANCES."
This Invention, which relates to certain improvements in machinery or apparatus
for treating dextrine, maltose, glucose, malt worts, hopped and unhopped, and
analogous substances, is a further development of such machinery or apparatus
for which the said Alexander Low Bruce, George Stenhouse, William McCowan,
and Andrew Haddow obtained Letters Patent, No. 3230, A.D. 1879, and the object
of the present improvements is in part to dispense with the rotating brush and
striker, forming part of the aforesaid Invention, for causing the liquid dextrine,
maltose, glucose, malt worts, hopped and unhopped, and analogous substances to be
projected in the form of spray upon the drying cylinder or cylinders. In place then
of the aforesaid rotating brush and strikers under the present improvements there
is substituted a trough or channel open at the ends made of wood or other suitable
material, one side being stationary, the other side being formed by the surface of
the cylinder; the bottom is adjustable and is pressed against the surface of the
cylinder by set screws, so that its front edge can be pressed closely against the
smooth surface of the rotating drying cylinder, thereby practically preventing
the liquid dextrine, maltose, or other liquid or liquefied solids which are flowing
into the trough from leaking out or passing through to its under side. The said
CD 071

page_text: trough, which, is carried in brackets attached to the framings of the machine is
slightly inclined so that the liquid always flows towards its lower end.
The dextrine, maltose, or other liquid is supplied to the machine by a pump or
by the action of gravity or other equivalent means, and in order to prevent the
liquid or any small portions of solid matter which it may contain from clogging the
pipe through which it flows to the feeding pipe, a piston or equivalent valve is
inserted in the pipe through which it flows, which being operated by a cam at
intervals shuts and opens an orifice in the pipe; the shock or interruption of flow of
the liquid thus produced prevents the feeding pipe from becoming choked or
clogged.
At the upper part of the framing which carries the trough hereinbefore described
there is fitted a saddle which carries a scraper. This saddle and scraper are capable
of sliding upon the framing and of being fixed in any position thereon by a set
screw. The scraper is adjusted so as to bear against the surface of the rotating
cylinder, and its use is to prevent or remove the formation of any ridges of the
material being dried thereon.
The pipe hereinbefore described carries the liquid into a feeding pipe situated a
short distance above the level of the trough. This feeding pipe is provided with
vertically adjustable overflow or outflow pipes through which the liquid escapes
in regulated quantity through suspended feeding pipes whose lower ends dip into
the trough or channel. The vertical outflow pipes pass through the upper and
lower sides of the main feeding pipe, and they have an opening through which the
dextrine, maltose, or other liquid passes into them. These vertical pipes are screwed
at their upper ends and pass through a nut in the upper side of the main feeding
pipes, whereby the level of their outflow orifice is adjusted, a set nut being also
provided for fixing that adjustment.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Alexander Low Bruce, George Stenhouse, William McCowan, and
Andrew Haddow in the Great Seal Patent Office on the 27th July 1880.
ALEXANDER Low BRUCE, of the Firm of William Younger and Company,
Brewers, GEORGE STENHOUSE, Brewer to the said Firm, WILLIAM MCCOWAN,
and ANDREW HADDOW, all of the City and County of Edinburgh, North
Britain. IMPROVEMENTS IN MACHINERY OR APPARATUS FOR TREATING DEXTRINE-
MALTOSE, GLUCOSE, MALT WORTS, HOPPED AND UNHOPPED, AND ANALOGOUS
SUBSTANCES."
ss
Our said Invention relates to certain improvements in machinery or apparatus
for treating dextrine-maltose, glucose, malt worts, hopped and unhopped, and
analogous substances, and is a further development of the machinery or apparatus
for which we, the said Alexander Low Bruce, George Stenhouse, William McCowan,
and Andrew Haddow, obtained Letters Patent, dated the 12th day of August, A.D.
1879, and numbered 3230. The object of part of the present improvements is to
dispense with the rotating brush and strikers forming part of the aforesaid apparatus
described in the Specification of the aforesaid Patent, No. 3230, A.D. 1879, for
causing the matter under treatment to be projected in the form of spray upon the
drying cylinder or cylinders. For this purpose under our present improvements
we substitute for this said arrangement of rotating brush and strikers a trough or
channel open at the ends, one side of the said trough or channel being formed by
the periphery or drying surface of the drying cylinder, and the bottom of the said
trough or channel being pressed against the said periphery so as to prevent the
matter to be treated and flowing into the said trough or channel from leaking out
or passing through to its underside.
The dextrine-maltose or other matter to be treated is supplied to the said trough
or channel through supply and feeding pipes, and in order to prevent the said
matter, or any small portions of solid matter which it may contain, from clogging
the supply pipe, through which it passes to the feeding pipe from which it flows to
the said trough or channel, the said supply pipe is provided with a piston or
equivalent valve which is operated at intervals to shut and open an orifice through
which the said matter passes, so that the shock or interruption of the flow thus
produced prevents the clogging or choking of the pipes. This piston or other valve
is adjustable in order to regulate the quantity of matter passing to the trough or
channel.
The feeding pipe into which the matter to be treated passes from the supply
pipe is situated above the trough or channel, and the said feeding pipe is provided
with outflow pipes through which the matter flows in regulated quantity through
suspended pipes, whose lower ends open into the trough or channel. The said
outflow pipes pass through the upper and lower parts of the feeding pipe, and they
have an opening at that part of them which is in the said feeding pipe, through
which opening the matter to be treated passes into the said outflow pipes. The
upper parts of the said outflow pipes are screwed and passed through a nut, by
which the said overflow pipes can be fixed in a higher or lower position, so that
the aforesaid orifice therein can be adjusted to a correspondingly higher or lower
position and the rate of flow of the matter from the feeding pipe to the trough be
thereby regulated, and the delivery of the said matter from the said outflow pipes
along the whole length of the trough or channel be effected in equal quantities.
A scraper is provided, it being carried by a saddle capable of being slidden longi-
tudinally upon the framing of the trough and fixed in the position to which it is
brought. The said scraper bears against the surface of the rotating cylinder just
above the trough or channel, and its use is to prevent or remove any ridges of the
material being dried thereon.

page_text: And in order that our said Invention may be properly understood we now
proceed more particularly to set forth the system, mode, or manner in or under
which the same is or may be used or practically carried into effect, reference being
had to the accompanying Drawings, and to the letters and figures marked thereon,
that is to thereon:―
Figure 1 of the accompanying Drawings represents in front elevation a portion
of a cylinder, provided with the improvements constituting our present Invention;
Figure 2 is an end elevation of one half of the said cylinder; Figure 3 is a vertical
section drawn to a larger scale of the trough or channel and other parts; Figure
represents in front elevation a portion of the said trough, and Figures 5 and 6 are
respectively a front elevation of a portion of the feeding pipe and a transverse
section of the same; Figures 7 and 8 are respectively a plan and vertical section of
the arrangement for preventing the clogging of the inatter in the supply and
feeding pipes, and regulating the quantity of matter fed to the trough or channel.
The trough or channel is supported upon trunnions a in the framing at either
end of the drying cylinder. The said trough or channel consists of a rib or
casting b, to which is fixed a strip of wood or other suitable material c, extending
there along and forming one side of the said trough or channel. A strip d, of wood
or other suitable material, extends along the rib b, and is connected thereto by
clamps e placed at convenient or suitable distance apart. The other side of the
said trough or channel is formed by the periphery or drying surface of the
revolving drying cylinder, a portion of which surface is represented by the line X
in Figure 3, the said cylinder revolving in the direction of the arrow. At intervals
on the rib b are ears 62, through which pass screws 63, by which the bottom d of
the trough or channel is pressed into close contact with the surface of the cylinder,
so as to prevent the liquid in the said trough from leaking out or flowing to its
underside. The said trough is shewn for convenience of delineation as being
horizontal, but in practice it is slightly inclined so that the matter to be treated
may flow towards its lower end. Bow springs are placed between the screws b³
and the outer edge of the bottom d of the trough or channel to give a yielding
bearing of the inner edge of the said bottom d against the cylinder. Keyed to one
of the trunnions a is an arm a² (see Figure 1), which is fixed against the framing
of the machine by a clamping screw a³ to retain the trough or channel in position
against the side of the drying cylinder, as shewn in Figure 3. By loosening this
screw as the said trough or channel can be turned back clear of the drying cylinder
for cleaning or other purposes.
The dextrine-maltose or other matter to be treated is supplied to the machine by
a pump, or by the action of gravity, or by other equivalent means through a supply
pipe connected to the feeding pipe gat g² (see Figure 1); and in order to prevent
the liquid or any small portions of solid matter which it may contain from clogging
the pipes through which it flows, and to regulate the quantity of matter fed to the
trough or channel, the said supply pipe may be provided with the piston or valve
arrangement, illustrated in plan and vertical section respectively in Figures 7 and 8.
The valve casing or cylinder h is fixed to any convenient part of the machine, and
is provided with an inlet and an outlet passage to which sections of the supply
pipe are connected, so that the matter passes through the said cylinder ½ on its
passage through the said supply pipe, as indicated by the arrows. A piston or
plunger works. backward and forward in the cylinder or casing h, this motion
being effected in any suitable way, as, for example, by causing a projection k³ on
the first motion shaft k of the machine to alternately knock against either side
of a slot 1 in the rod l, to which the outer end of the piston or plunger j is con-
nected by a screw attachment by which it may be adjusted, so that the said piston
covers the inlet passage of the supply pipe to the cylinder h for a greater or less
portion of its stroke, by which adjustment the quantity of matter fed to the trough
or channel is regulated. When this valve is in operation the piston or plunger i
alternately covers and uncovers the inlet passage, and the shock or interruption of

page_text: the flow of the liquid thus produced prevents the pipes from becoming choked or
clogged.
The feeding pipe g is supported by side standards g³ a short distance above the
level of the trough or channel, and the matter to be treated flows from the supply
pipe into the said feeding pipe at 92, and therefrom through orifices in the outflow
pipes m which are situated at intervals along the said feeding pipe g. From the
said outflow pipes m the said matter passes to the trough or channel through
pipes p suspended beneath the outlets of the said outflow pipes m, as shewn at
Figures 3 and 5. The outflow pipes m pass through the upper and lower sides of
the main feeding pipe g, and they have an orifice m² (see Figure 6) through which
the dextrine-maltose or other matter passes from the feeding pipe g. The said
pipes m are screwed at top and pass through nuts m³ at the upper side of the
feeding pipe g, by which the said outflow pipes m can be raised or lowered, and
consequently a greater or less quantity of matter be caused to pass through the
orifices m² from the said feeding pipe g, and thus the matter be equally distributed
along the whole length of the trough or channel. At the upper part of the rib b is
a bead 63 upon which a saddle q can be slidden to and fro. The said saddle carries
a scraper 9. The set screw q³ fixes the said saddle q and scraper q³ in any position
to which they may be brought. The lower part of the said scraper q³ bears against
the surface of the rotating drying cylinder, and its office is to prevent the formation
of, or remove any ridges of the material being dried which may form upon the
surface of the said drying cylinder, the said saddle and scraper being brought by
hand into position to act upon the required portion of the cylinder's surface.
Supported in the framework of the machine is a drain trough formed by the trough-
shaped rib r carrying a strip r² of steel or other material held in position in contact
with the cylinder by a catch or pawl engaging in a notch in one of the end
pieces which support the said rib (as seen in Figure 3). This strip 3 will intercept
and cause to pass into the drain trough any matter which may drop from the
trough or channel above as well as any overflow from the lower end of the said
trough or channel. By turning back the catch or pawl ³ the drain trough may be
turned back for cleaning or other purpose.
When the machine is in operation the valve or piston j, Figures 7 and 8, and the
orifices m² of the outflow pipes m are adjusted so as to cause a regulated quantity
of matter to flow through the pipes p to the trough or channel, where it will be
taken up in a thin film or layer upon the surface of the drying cylinder, and it will
be dried thereupon, as described with regard to the drying in a thin film or layer
upon drying cylinders in our aforesaid former Specification, it being understood
that the arrangement of cylinders and the method of driving and heating them and
supplying hot air to them is, or may be, the same as described in the said former
Specification. It will also be understood that our present improvements may be
applied to a machine having one drying cylinder, or having more than one such
cylinder, a trough or channel being provided for each cylinder.
The quantity of dextrine-maltose, or other matter, will by the adjustment of the
valve, Figures 7 and 8, be caused to pass in such quantity to the trough or channel
that it will not accumulate to any considerable extent therein, but will at once be
taken up upon the surface of the revolving drying cylinder. When more is supplied
than is taken up by the cylinder it overflows at the lower part of the trough or
channel and is caught in the drain trough r.
For removing the dried matter from the cylinder or cylinders any suitable
scrapers may be employed, but we prefer to use the scrapers described and
illustrated in the said Specification of our said former Patent. The centres at 8, in
Figures 1 and 2, are for the reception of these scrapers.
Having now described and particularly ascertained the nature of our said
Invention, and the system, mode, or manner in or under which the same is or may
be used or practically carried into effect, we would observe in conclusion that we
do not limit ourselves to the precise details herein described and illustrated in the
accompanying Drawings, as the same may be varied without departing from the

page_text: nature of our Invention, but what we consider to be novel and original, and,
therefore claim as the Invention secured to us by the hereinbefore in part recited
Letters Patent is,-
First. The hereinbefore described improvement in machinery or apparatus for
drying dextrine-maltose, glucose, malt worts, hopped and unhopped, and analogous
substances consisting in the combination with, and use in, such machinery or
apparatus of a trough or channel, or troughs or channels, for supplying the matter
to be dried to the drying cylinder or cylinders, the said trough or channels, or
troughs or channels, being constructed and arranged, or combined essentially as
herein before described with reference to the accompanying Drawings.
Second. The arrangement, essentially as herein before described with reference to
Figures 7 and 8 of the accompanying Drawings, for causing an interruption of the
flow of the matter passing to the cylinder or cylinders to be dried for the purpose
of preventing the clogging or choking of the supply passages, and for regulating
the supply of matter to the drying cylinder or cylinders.
Third. The adjustable outflow pipes m constructed and combined with the
feeding pipe, essentially as hereinbefore described and illustrated in the accom-
panying Drawings, for the purpose of regulating the quantity of matter supplied
through the whole length of the trough or channel from which it is received upon
the drying cylinder or cylinders.
Fourth. The combination with the machine of the scraper qº and its connections,
constructed and combined as hereinbefore described and illustrated' in the accom-
panying Drawings.
In witness whereof, we, the said Alexander Low Bruce, George Stenhouse,
William McCowan, and Andrew Haddow, have hereunto set our hands and
seals, this Twenty fourth day of July, in the year of our Lord One thousand
eight hundred and eighty.
ALEXR. L. BRUCE.
(L.S.)
GEO. STEN HOUSE.
(LS.)
WILLIAM MCCOWAN. (L.S.)
ANDREW HADDOW. (L.B.)