NEW OR IMPROVED MODES OF AND MEANS OR APPARATUS FOR PREVENTING THE FIRE AND EXPLOSION SOMETIMES CAUSED BY THE OVER FRICTION AND HEAT IN GRINDING OR CRUSHING GRAIN IN FLOUR, MEAL, AND MALT MILLS FROM SPREADING WITH THE 'STIVE' OR FLOUR DUST INTO THE INTERIOR OF THE BUILDINGS OR MILLS AND THEIR RECEIVING AND DRESSING OR AIR EXHAUSTING CHAMBERS." PROAL
Year: 1874

page_text: LETTERS PATENT to Richard Murray and John Paterson, of Coatbridge,
in the County of Lanark, North Britain, Engineers, for the Invention
of "NEW OR IMPROVED MODES OF AND MEANS OR APPARATUS FOR PREVENTING
THE FIRE AND EXPLOSION SOMETIMES CAUSED BY THE OVER FRICTION AND HEAT
IN GRINDING OR CRUSHING GRAIN IN FLOUR, MEAL, AND MALT MILLS FROM
SPREADING WITH THE 'STIVE' OR FLOUR DUST INTO THE INTERIOR OF THE
BUILDINGS OR MILLS AND THEIR RECEIVING AND DRESSING OR AIR EXHAUSTING
CHAMBERS."
PROVISIONAL SPECIFICATION left by the said Richard Murray and
John Paterson at the Office of the Commissioners of Patents, with
their Petition, on the 15th May 1874.
WC, RICHARD MURRAY and JOHN PATERSON, of Coatbridge, in the
5 County of Lanark, North Britain, Engineers, do hereby declare the nature
of the said Invention for "NEW OR IMPROVED MODES OF AND MEANS OR APPA-
RATUS FOR PREVENTING THE FIRE AND EXPLOSION SOMETIMES CAUSED BY THE OVER
FRICTION AND HEAT IN GRINDING OR CRUSHING GRAIN IN FLOUR, MEAL, And Malt

page_text: MILLS FROM Spreading WITH THE 'STIVE' OR FLOUR DUST, INTO THE INTERIOR OF
THE BUILDINGS OR MILLS AND THEIR RECEIVING AND DRESSING OR AIR EXHAUSTING
CHAMBERS," to be as follows: —
33
This said Invention has for its object the confining of the flash of fire,
sometimes caused by the excess of friction and heat in grain and malt,
grinding and crushing mills, within their surrounding casings, and so
prevent the fire from spreading to the interior of the rest of the
building with the "stive or flour dust, through the discharge ducts
and elevators or "creepers," or through air exhausting ducts. And the
nature of the Invention, or mode and means of performing it, consist
in the construction and use of one or more hollow bored cylinders or
chambers with close turned and jointed ends, and an inlet and outlet
branch duct and flanges on opposite sides of the periphery for bolting
and jointing it tightly by these respectively to the discharge duct of the
delivery chamber or case of and close to the grinding or crushing mill,
and the other or discharge duct to the inlet or near end of the duct or
spout for delivering the ground or crushed products from the mill, and
this new cylinder or vessel into the receiving bags, hoppers, or other
receptacles, elevators, or " creepers," as the case may be; or otherwise
when these improvements are applied to meal or flour grinding mills
with "stive or air exhausters, one or more of these cylinders would in
like manner be jointed to the exhaust discharge duct, preferably also
close to the enclosing case of the grinding mill or stones or rollers, so as
in each position respectively to allow the ground meal to be discharged,
and the "stive" and air to be removed therefrom as required, and yet
prevent fire passing through these new delivery cylinders by an internal
revolving chambered drum or wheel in each with close ends, and a
number of radial feathers ranged longitudinally between these to form
the delivery close chambers, both turned truly or cylindrically on the
outer perimeter to work so tightly and yet easily within each outer
cylinder that the fire gas cannot pass through the joints or past the
ends, as these work close up to the end covers of the outer case, out
through the centre of which the driving spindle of the internal drum
revolves in stuffing boxes or bearing bushes, and driven at a slow speed
from any adjacent motive power shaft by a chain and chain wheels or
toothed gearing, or both, or by any other equivalent means.
:
The revolving close chambers of the internal drums, are preferably of
nearly the same length as the width of the ducts, which on the side
1

page_text: .
next the mill is led at such equal angles to the cylinder that in the case
of fire, or an explosion of the "stive" in the mill case or receiver, it
would act equally on the vanes of the close chambers, so as not to
influence the turning of the drums should it not be convenient to get
ducts on side next mill led at equal angles to drum, any tendency
exerted by explosion to turn drum may be counteracted by a ratchet
and pall placed on outer end of spindle; or the pressure caused within
the mill case by the explosion may be made to push out a small
piston or valve for the purpose, which by a rod or other equivalent
would throw out the moving clutch of the cylinder and lock it until
such time as there was no chance of fire or explosion passing through this
close revolving chambered box, after which the attendant could release
it and set it into action again. However in general it is preferred to
make this cylinder and its chambered wheel inside large enough that it
could be driven so slowly that it would deliver all the meal or "stive,"
as the case may be, and yet allow plenty of time for the flash of fire in
the mill case to go quite out or pass off before the wheel would carry it
round or allow it to pass through the cylinder to the discharge side or
ducts, and so prevent the chance of fire within the mill flats, rooms, or
chambers.
The ends of the outer cylinders may be made to screw up and main-
tain tight joints, or packing rings might be inserted in these or in the
ends or edges of the inner revolving cylinder for that purpose, and when
desired the interior of the cylinder or casing and periphery of the
revolving drum might be made slightly conical, and its tightness main-
tained to make up for the wear by shifting it on end by its spindle in
the end covers, or by tighting up these covers themselves.
0
pursuance of con
ՄԱԿ ԼԵՆՆԵՐԻ ՆԵՆ,
filed by the said Richard Murray and John Paterson in the Great
Seal Patent Office on the 13th November 1874..
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, RICHARD
MURRAY and JOHN PATERSON, of Coatbridge, in the County of Lanark;
North Britain, Engineer, send greeting."
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
5 Letters Patent, bearing date the Fifteenth day of May, in the year of

page_text: r
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Richard Murray and John Paterson, Her
special licence that we, the said Richard Murray and John Paterson,
our executors, administrators, and assigns, or such others as we, the said
Richard Murray and John Paterson, our executors, administrators,
and assigns, should at any time agree with and no others, from time to
time and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "NEW OR IMPROVED MODES OF AND MEANS OR APPARATUS
FOR PREVENTING THE FIRE AND EXPLOSION SOMETIMES CAUSED BY THE OVER
FRICTION AND HEAT IN GRINDING OR CRUSHING GRAIN IN FLOUR, MEAL, AND MALT
MILLS FROM SPREADING WITH THE 'STIVE' OR FLOUR DUST INTO THE INTERIOR OF
THE BUILDINGS OR MILLS AND THEIR RECEIVING AND DRESSING OR AIR EXHAUSTSNG
CHAMBERS," upon the condition (amongst others) that we, the said
Richard Murray and John Paterson, our executors or administrators, by
an instrument in writing under our, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that we, the said Richard Murray and John
Peterson, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement in writing, reference
being had to the several Figures and modifications shown on the accom-
panying Sheet of Drawings, that is to say :—
Our said Invention has for its object the confining of the flash of fire
sometimes caused by the excess of friction and heat in grain and malt
grinding and crushing mills within their surrounding casings or im-
mediate ducts, and so prevent the fire from spreading to the interior of
the rest of the building with the "stive" or flour dust through the
discharge ducts, and elevators, or "creepers," or through air exhausting
ducts.
And in order that the nature and novelty of our said Invention, and

page_text: the best modes and means which we are at present aware of for per-
forming or putting it into effect or practice may be properly understood,
we will now proceed to describe the several Figures on the Sheet of
Drawings which we have hereunto appended for that purpose;
the same
reference letters indicating the same or equivalents parts in all the
Figures where shown.
Figure 1 is a side elevation of the close case a¹ and upper supporting.
bed frame a" enclosing the revolving and stationary grinding stones of
an ordinary flour mill a, with the upper part of their supporting
columns a¹ and driving spindle b, and having one modification or con-
struction and arrangement of the parts of our new or improved
apparatus, or revolving vane, or opening and closing valve, whcel A, A¹,
applied thereto, preferably with its inlet duct O connected to the
ground flour discharge duct c close to and between the case a, a¹,
and the receiving end c¹ of the flour "creeper " or conducting screw
chamber c, into which in this case the discharge end or duct O' of the
apparatus A, A¹, leads.
Figures 2 and 3 are side and transverse vertical sections respectively,
taken on the lines 1--- 1, and 2 2, each on the other, of our new.
or improved apparatus A, A', shown in Figure 1, for confining the
explosion of the "stive" within the millstonc case a, a, and pre-
venting it (when it occurrs from the friction or spark from the stone)
from spreading into the interior of the building through the flour
ducts c, c', all in accordance with this our said Invention.
Figures 4 and 5 are vertical elevations respectively of the opposite
sides of the lower end of the elevator and receiving box E of a malt or
it might be other grain grinding mill, shown as fitted with a slightly
different modification or construction of our said new or improved
apparatus A, A', from that shown in Figures 1, 2, and 3. And Figure 6
is a sectional clevation of the apparatus or revolving wheel A, A',
corresponding to Figure 4 (in this case Figures 4 to 6) made with a wide
hopper-shaped inlet duct C so as to receive the ground malt or grain
direct, at one side, from the lower part of the enclosing case of the
rollers or mill, but it might be from a duct (as c in Figure 1) when desired.
.
Referring to Figures 1 to 6 in these modifications and adaptations of
our said Invention the new or improved apparatus A, A', used consists
of the outer hollow internally bored cylinder or chamber A, and

page_text: an internal revolving cylinder or valve A¹, with radial vanes and
chambers A", and close ends A¹, all turned and fitted into the outer
cylinder or casing A, and into recesses in the covers A, which are.
turned, fitted, and jointed air-tight to flanges on the outer casing A
at A. The inlet and outlet discharge ducts C and C¹ are formed
preferably on opposite sides of the outer cylinder A, and have a
socket and flat flanges at their outer ends for respectively securing or
bolting and jointing these ducts tightly, the one C air-tight to the
discharge duct.c of the delivery chamber, part of the case a, a¹, as close
to the grinding or crushing mill a as possible, and the other or discharge
duct C¹ to the inlet or near end c¹ of the duct or spout for delivering or
conducting the ground or crushed products from the mill to the
creepers c, Figure 1, or it might be to the elevators, Figures 4 and 5,
or into ducts leading to the receiving bins, hoppers, bags, or other
receptacles, as the case may be. The internal cylinder A is fixed or
keyed tight on the spindle B working in close journal bearings in the
end covers A, and with the ends of the numerous radial vanes or
feathers at A' ranged longitudinally between its close ends A", working
close up to the end covers A¹, so as to form the delivery close
chambers A", both turned truly and cylindrically on the outer perimeter
to work so tightly and yet easily within the outer cylinder A¹ that the
flash of fire-gas cannot pass through the joints or past the ends of
the radial vanes and pockets A" for receiving and carrying round the
ground flour or meal from the inlet duct c, C, to the discharge duct C¹, c¹,
as the cylinder A revolves within the outer case A, all as shown by the
arrows which indicate the motion of the parts and the delivery of
the ground flour. The valve wheel A¹ in Figures 1 to 3, is driven by
the bevel wheel B¹ keyed on the end of its driving spindle B outside the
case A and one of the end covers A". This wheel B' is geared into
and actuated by the corresponding wheel B" keyed on one end of the
horizontal spindle B¹¹, carried and revolving in the bearing brackets B
formed or fixed on the said end cover A1111, and on one of the
columns a¹ of the mill a, this spindle or shaft B being driven at a-
slow speed by the screw wheel B² keyed on it working into the screw B³
keyed on the driving spindle 6 of the mill a; but this motion of the
internal valve wheel A might be taken from any other convenient
adjacent motive-power shaft, by other equivalent ordinary toothed
gearing, or chains and chain wheels, or by belts and pulleys as shown in
Figures 4 and 5, in which the spindle B is driven by a pulley B' on it,

page_text: by a belt B* passed over it, and a small pulley B' on the spindle E¹ of the
lower revolving chain drum or pulley E" working in the box E of the
elevators, into which in this case the ground material is delivered.
- -
as :
The revolving close chambers A" of the internal drums A' are pre-
ferably of nearly the same length as the width of the ducts C, C',
seen in Figure 3, and which on the side next the mill at C is led at such
(or equal) angles to the radial line 2 - 2 through the axis B of the
cylinder A', in Figure 2, that in case of fire or an explosion of stive
in the mill case a¹, a", or receiver c, C, its force would act nearly equally
on the vanes of the close chambers A" so as not to influence the turning
of the drum A' in the one direction more than in the other, and the
force of the explosion and gases would escape through the pipe C², which
would have a valve opening outwards at its extreme outlet, preferably
led out through the wall of the mill to the open air. Should it not be
convenient to get ducts on the side next the mill led at equal angles to
the radius 2 2 through the centre of the duct and drum, as at O in
Figures 4 to 6, any tendency exerted by the force of the explosion to
turn the drum A' may be made to act in the opposite direction to its
delivery motion indicated by the arrows in Figures 4 and 6, and which
would be counteracted by the pawl B and ratchet wheel B' mounted
on the outer end of the case A, the latter B' being keyed on the spindle
B, as shown in Figure 5, or otherwise the pressure caused within the
mill case and ducts c, C, by explosion might be made to push out a small.
piston or valve for the purpose, which by a rod or other equivalent con-
Enection would throw a moving clutch into action with the cylinder A¹,
which would lock it until such time as there was no chance of fire or
explosion passing through the close revolving cylinder and chambered.
box A, A, after which the attendant could release it and set it into
action again. However in general it is preferred to make this cylinder A
and its chambered or valvular wheel A' inside large enough that it could
be driven so slowly that it would deliver all the meal, or "stive," as the
case may be, and yet allow plenty of time for the flash of fire in the
mill case to go quite out or pass off before the wheel A¹ could carry it
round or allow it to pass through the interstices A" of the cylinder A¹ to.
the discharge side or ducts C¹, and so prevent the chance of fire within
the rooms, chambers, or flats of the mill house.
The ends A¹ of the outer cylinder A would preferably be made with
screws at A³ to screw up and maintain tight joints, or otherwise packing.
'

page_text: rings might be inserted in these ends A or in the ends or edges of the
inner revolving cylinder A¹ for the purpose of making all the parts tight
where the fire-gas would pass, and when desired the interior of the
cylinder or casing and periphery of the revolving drum might be made
slightly conical, and its tightness maintained to make up for the wear
and to keep all tight by shifting it on end by its spindle B in the end.
covers A¹¹¹, or by tightening up these covers themselves. When these
improvements and apparatus A, A¹, A", are applied to meal or flour
grinding mills with "stive" and air exhausters, one or more of these
cylinders or equivalents A, A', A", may (as described in reference to
Figures 1 to 6) be jointed to or in some part of the air and "stive”
exhaust duct d, d, either close to the enclosing case a¹, a¹¹, of the grinding
mill a or to the duct D', C, beyond it and the "stive" trap or chamber,
as D, D, Figures 7 and 8, carrying off all the flour dust, so as in either
position respectively to allow the air and stive to be removed from
the mill through the said ducts d, d, and apparatus A, A', A", to the
said trap or chamber D, D, and still prevent the fire from passing
through these delivery cylinders A, A', A", by their internal revolving
chambered or valvular wheels A¹, A", in each.
---
Figures 7 and 8 are a longitudinal and a transverse section respectively
taken on the lines 1 1 and 2. 2, cach on the other, of a "stive"
exhaust chamber and trap D for depositing the flour dust therefrom,
arranged in accordance with and having a slightly different construction
of our new or improved apparatus A, A', A", applied thereto for pre-
venting the fire from passing beyond this trap into the mill house
through the ducts D" and C¹, which convey the flour dust therefrom
into the mill.
(
Referring to these Figures 7 and 8, d is the ordinary exhaust duct
conducting the "stive" from the mill casing (as a¹, a", Figure 1)
leading. it into the trap chamber D, preferably made as shown
rectangular at top, and of a V trough or long hopper shape below for
the flour dust to fall down to the bottom, where there is a creeper
screw D', which carrics the flour dust to the one end and delivers it
into the inlet duct D₁ and end C of the revolving valve apparatus
A, A', A", applied thereto, and which consists of a nearly cylindrical
hollow trunk or body case part A, having an upper and lower valve seat
jointed therein, with revolving valve lids A' and A" respectively, and a
close chamber A* between them. Both valve lids. are secured on the

page_text: .
spindle B revolving in bearings in the valve seats, and having the upper
end working out through a bearing or stuffing box in the upper end
cover A, so as to be driven by the bevel wheels B₁, B", actuated by
the short shaft B¹ and pulley B2 on it by a belt from any adjacent
prime motive shaft; all so that as the spindle B revolves the valve lids
A¹ and A" alternately open and close three radial openings A2 in their
respective upper and lower valve seats, as shown particularly in dotted
lines in Figures 9 and 10, which are enlarged plans of these valves and
their seats as detached from the apparatus.in Figures 7 and 8 and (the
lids being angled on the top to agitate and assist the flour dust in falling
down through the ducts or openings A²) which thus always close the
one set of openings before those of the other valves are opened, so that
the flour dust is first delivered into the centre chamber A* through the
openings in the top valve lid and its seat A', and then, while these valves
are closed the lower ones A" are opened, so as to allow the flour dust to
pass through them into the discharge duct C¹, from which it could be led
with safety back into the mill house by spouts, creepers, or other
equivalents as desired, without the possibility of the fire of the "stive
passing through this improved valve case A, A¹, A", since if an ex-
plosion of the "stive" occurred in the mill case and was carried through
the duct d into the "stive" flour chamber D, it could not pass the valve
and seat A¹ if it was shut, and the force and fire gas would escape
through the loose weighted doors D¹¹ for the purpose, opening outwards
to the open air outside the mill or out through the duct or pipe C², also
led outside, or otherwise, should the explosion happen when these upper
valves A¹ are open the under ones A would be closed, and the fire and
explosion could only reach the mid-chamber A*, which is provided with
a fire gas escape pipe C³, also led outside of the building to the open air,
and which, as well as the pipe C³, would be fitted with a valve opening
outwards.
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"
To permit the exhaustion of the air from the " stive in the
chamber D, and at the same time assist the separation of the flour dust
therefrom; a large open mouth-picce D is formed leading to the suction
or exhaust discharge duct d¹ outside the mill house, covered with a
segmental surface of wire gauze D³, which will permit the air to pass
but not the fire, and to keep this wire gauze clean and separate the flour
dust from the stive which has been deposited on the wire gauze, we make

page_text: across the wire gauze through connecting rods F and crank discs F
and a revolving shaft F driven by a belt F from the shaft G, on which
the frame F¹ and brush Foscillate, and which also turns the brush by the
pulleys and belt G, G". The shaft G itself is actuated by a pulley H
keyed on its one end (passed out through a close bearing or stuffing box
as h), and by a belt H₁ passed over it, and a corresponding pulley H" on
the shaft of the creeper screw D', which is driven at a slow speed by the
wheel H² keyed on it, and the pinion H³ keyed on the short spindle B¹¹¹,
revolving in a bracket bearing at B* on the cover A₁ of the revolving
valve chamber A, A¹, A", the spindle B of which is actuated by the
same first motion shaft B1, all as further shown by the arrows on the
several parts, some of which also show the course of the air and flour
through the respective ducts, ports, and parts of the apparatus.
M
Figures 11 and 12 are two vertical sections at right angles to each other,
taken on the lines 1 1 and 2 - 2 respectively, each on the other, of
another modification, or construction and arrangement of the parts, of
our said new or improved revolving drum or valvular apparatus A, A', A",
(different from those shown in Figures 1 to 8, and suitable for being
applied instead of or as an equivalent of these) for preventing the
explosive fire of the "stive" of flour, malt, or other grain grinding and
crushing mills from passing beyond this apparatus through the flour or
stive ducts into the mill house. In this modification Figures 11 and 12,
the outer hollow cylindrical case A, is much the same as described in
reference to Figures 1 to 6, but having the inlet and outlet ducts or
branches C, C', formed at a greater and almost equal radial angle on
cach opposite side of the vertical line 2 2 in Figure 11, through the
centre of the internal revolving cylinder or valve A', which in this case
is made hollow with an outer shell, fitting the interior of the outer case A
and end covers A¹, all fire gas tight. The internal cylinder A¹ in this
case is formed with three ports A" through and equally divided round the
periphery, each the same size as the inner port of the ducts C, C¹, so that
when turned by the pulley B¹ keyed on the end of its hollow spindle B
passed through a close bearing in one of the end covers A¹ for that
purpose, so that it can never be open right through from the duct C to C¹
at any time or let the fire gas pass. The flour passes from the duct C
into the interior A* of the cylinder A' (through the ports A" three times
in the revolution only when the duct C₁ is closed, and then passes out from
the centre through these ports into the discharge duct C', while the inner
::
---
1111

page_text: and inlet port of the duct C is closed by the solid web part of tho
internal valve A¹ opposite each port A", and which is more than three
times the width of these ports, to give cover and insure that the one
port A" and duct C or C¹ would always be closed before the other opens,
and to assist the flour passing freely through the interior A* of the
cylinder A" and its ports there is a tickler or agitator J, with radial
arms J¹, mounted and keyed on a small solid spindle J", fitted so as to
revolve fire-tight within the cylinder A' and its hollow spindle B out
through the opposite end cover A, where it has the pulley J" keyed
on it so as to be turned slowly in the opposite direction to that of the
valvular cylinder A¹, all as indicated by the arrows.
Referring to Figures 7 and 8 we would observe that this stive trap D
ought either to be built in a separate house or it may be close to ono
side or end of the actual mill building, leaving the doors D™ and duct d¹
free to open out to the atmosphere in case of an explosion. With tho
actual air exhausting mechanism, also placed in a separate house outside
the mill, and the air exhaust duct d¹ may be led from the trap D outside
the mill to the said exhausting machinery to prevent the possibility of
fire, even if it passed through the wire gauze D2 into this duct from
doing any injury to the mill building. Although only one of the new
close cylinders and revolving wheel or valve apparatus has been shown
as fitted on to the discharge ducts of grinding and crushing grain or
malt mills, yet still it is to be understood that two or more of these
.might be so fitted to these ducts.
-
Having thus particularly described and ascertained the nature of our
said Invention, and the manner of performing it, we would observe
that we make no claim to the construction and arrangement of the parts
indicated by the small italic letters by themselves, except so far as they
are essential to and combined with the new parts indicated by Roman
or capital letters; neither on the other hand do we restrict ourselves to
the precise construction and arrangement of these new parts herein
described and shown, as considerable variation may be made therefrom
without departing from the main or essential features of our said
Invention; but what we consider novel and original, and therefore
claim as the Invention secured to us by the herein-before in part recited
Letters Patent is,-
First. The construction and arrangement of the parts or mechanism
for preventing the fire or explosion in flour, malt, and other grinding

page_text: or crushing mills from spreading through the stive or other ducts
leading therefrom into the interior of the building, all substantially as
herein described and distinguished in reference to and as shown in the
several modifications and Figures on the accompanying Sheet of
Drawings.
Second. The construction and arrangement of the parts of a close
cylindrical case and internal revolving radial chambered wheel, all
substantially in the new or improved manner, and for the purposes
herein described in reference to and shown in Figures 1 to 6 of the
accompanying Drawings.
Third. The construction and arrangement of the parts of a close
delivery case with duplex revolving valves therein, all substantially in
the new or improved manner, and for the purposes herein described in
reference to and shown in Figures 7 to 10 of the accompanying
Drawings.
Fourth. The construction and arrangement of the parts of a close
cylindrical case and internal revolving cylinder or valve with ports and
internal agitator, all substantially in the new or improved manner, and
for the purposes herein described in reference to and shown in Figures 11
and 12 of the accompanying Drawings.
In witness whereof, I, the said John Paterson, on behalf of the
said Richard Murray and myself, have hereunto set my hand
and seal, this Eleventh day of November, in the year of our
Lord One thousand eight hundred and seventy-four.
Witness,
W. R. M. THOMSON,
Patent Agent,
Glasgow.
JNO. PATERSON. (L.S.)