IMPROVEMENTS IN AND APPLICABLE TO MACHINERY OR APPARATUS FOR GRINDING OR REDUCING GRITS GRAIN SEEDS AND OTHER LIKE MATERIALS
Year: 1880

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields, in the
County of Middlesex, Gentleman, for an Invention of "IMPROVEMENTS IN AND
APPLICABLE TO MACHINERY OR APPARATUS FOR GRINDING OR REDUCING
GRITS GRAIN SEEDS AND OTHER LIKE MATERIALS" A communication from
LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields, in the
County of Middlesex, Gentleman, for an Invention of "IMPROVEMENTS IN AND
APPLICABLE TO MACHINERY OR APPARATUS FOR GRINDING OR REDUCING
GRITS GRAIN SEEDS, AND OTHER LIKE MATERIALS" A communication from
abroad by Auguste Frédéric Beyer and Adolphe Gustave Beyer, both of Paris,
in the Republic of France, Engineers.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at the
Office of the Commissioners of Patents on the 9th July 1880.
JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN AND APPLICABLE TO MACHINERY OR APPARATUS
FOR GRINDING OR REDUCING GRITS, GRAIN, SEEDS, AND OTHer like MaterIALS."
A communication from abroad by Auguste Frédéric Beyer and Adolphe Gustave
Beyer, both of Paris, in the Republic of France, Engineers.
This Invention relates to mills constructed with porcelain cylinders employed for
grinding grits and other similar produce in a granular condition, such as grain,
kernels, sceds, and the like, and consists in various improvements in the arrange-
ment and construction of the apparatus as hereinafter described.
According to this Invention the feeding device with toothed gear heretofore
employed is dispensed with, and in lieu thereof a simple and practical arrangement
is adopted, by means of which the substance to be ground is supplied to the
cylinders in the greatest possible quantity which the said cylinders are capable of
treating.
The porcelain cylinders are mounted loosely upon fixed axes lubricated either by
any suitable liquid lubricant or by carbon introduced into holes drilled in sleeves,
the latter being cast in one with discs, which grip and support the porcelain
cylinders.
These loose cylinders are driven or actuated by means of spring bolts or clutches,
and the cylinders of each pair are alternately caused to reciprocato in the direction
of their axes by means of a lateral cam in contact with a stationary friction
roller.

page_text: The loose flour or stive is drawn off at pleasure by means of a special combination
of suction tubes, as hereinafter described.
By means of improvements in the details hereinafter described the driving pulley
actuating the cylinders is thrown in and out of gear by means of a spring bolt,
easily moved and worked by a moveable conical rod, and the porcelain cylinders
may be driven by friction, and the alternate motion along the axes may be
produced at the same time, as hereinafter described; means are also provided for
enabling two pairs of cylinders in one mill to be driven either by a single belt or by
separate belts.
In carrying out this Invention the porcelain cylinders are enclosed in a case of
wood having a rectangular opening in the upper side, and the edges of this opening
are provided internally with depending ledges forming-a hopper, the lower edges of
which are carefully fitted so as to come as nearly as possible in contact with the
cylinders without actually touching them. This hopper may be constructed of
metal enamelled on the interior. Either of the hoppers may be surmounted by a
hopper of wood, receiving the produce to be ground from a shoot, and directing it
in to the hopper first mentioned; but in all cases the large area of the rectangular
opening causes the produco to be distributed on to either of the cylinders, generally
upon the one which revolves with less rapidity than the other, so as to be ovenly
distributed by means of an adjustable distributer.
This distributer or feeder consists of a species of semi-cylinder, which may be
either solid or hollow, and is free to revolve upon a turned bolt or axis passed
--through the ends of the hopper, through the case, and through lugs carried by the
side frames. A worm whoel or segment of a worm wheel is fixed on this semi-
cylinder at or about the centre, so as to render it capable of accurate adjustment by
means of an endless screw or worm worked by hand, either by means of an external
knob or by means of a crank handle.
A rake or comb is also provided, the same being capable of turning on the same
axis as a centre, and in consequence of the reciprocating movement along their axes
of the porcelain cylinder, against which it bears, it regulates the feed accurately
according to the quantity of produce which it is desired to cause to pass between
the cylinder. This sifting comb may also be arranged so as to lie flat against the
feeder, or again it may be dispensed with altogether, a toothed edge at the side of
the opening being provided in its place. All these parts may be readily detached
by simply drawing out the central bolt or axis.
According to another modification of the foeder the comb is provided with an
oval eye, by which it is suspended from the axis carrying the feeder, and according
to a further modification a piece of leather is employed in lieu of the rake or comb
hereinbefore described.
The hopper may have combined therewith a rotary distributer composed of one
or more arms or blades of leather, having a straight or serrated edge forming teeth,
which may be employed in substitution for the feeding or distributing apparatus
herein before described.
The feeder constructed according to any of these modifications operates in the
following manner, vis*.:—
The cylinder which revolves at the less speed having a motion imparted to it
along its axis during its rotation, or having simply a rotary motion, draws with it
the layer of material to be ground, which is spread or distributed uniformly over its
entire length by the teeth of the comb or edge of the rake.
These arrangements of feeders may be employed in combination with mills
constructed according to the Invention for which Letters Patent were granted to
John Henry Johnson, dated the 16th October 1877, No. 3824, with one or more
pairs of cylinders, and also with cylinders coupled together end to end on the same
axis, and shrunk on according to the same Invention. The ends of the cylinders
in the latter case are separated by means of a washer, soldered to the shaft, when
two cylinders are coupled together. Mills of this description are provided

page_text: with self lubricating bearings of cast iron, of great length, carefully fitted and
ground.
One of these bearings carries an eccentric ring and device for imparting
reciprocating motion along the axes to the one cylinder which rotates at a different
speed to the other cylinder, motion being imparted to it by means of an intermediate
cone pulley carried on an arm capable of adjustment for regulating the tension of
the belt.
In order to obtain the requisite pressure at the point of contact between the
cylinders a spring in one length is provided for both pairs of cylinders, tho said
spring having a tightening screw in the middle and an adjusting screw near each
end, or two separate springs may be employed of equal strength, and each provided
at the centre with a tightening screw.
The particles of grits that still adhere together on leaving the cylinders aro
separated by a separator or rotating brush, the parts of which are capable of
adjustment by means of a screw, so as to cause them to work more or less closely,
as required, and motion is imparted to it by a belt running at the side of the belt
driving the mill, or by means of suitable toothed wheels, or again by the axis
carrying the cone pulley.
According to a further modification each of the cylinders is composed of a
porcelain tube, adjusted concentrically on the axis by the means hereinafter
described, the extremities of the tubes being pressed between hollow discs. The
discs at one extremity of each tube are cast in ono with sleeves which revolve upon
fixed shafts or axes, and one of these discs, in the case of each pair of tubes or
cylinders, is in one with a pulley, the pulleys being oither driven in pairs by a
single belt or separately, as required. The discs at the opposite extremities of the
tubos are screwed on to the sleoves, and in like manner one of these discs is cast
in one with a toothed wheel gearing with wheels turning upon studs cast in one
with the frame, and which wheels are capable of imparting rotary motion at
different speeds to the corresponding cylinders when required through the
intervention of spring bolts or clutches.
The cylinders, which have a reciprocating motion along their axes imparted to
them during their rotation, have one of their hollow rotating discs cast in one with
a lateral or side cain, maintained in contact by means of helical springs with a
friction roller turning on a vertical axis, which is supported in suitable bearings
carried by the frame. This simple device produces the requisite to and fro motion
of the cylinders upon their fixed axes.
The said cylinders to which the to and fro motion is imparted are pressed
against the other cylinders by means of blade springs, the pressure exerted by the
suid springs being adjusted by screws working in bearings.
The sleeves carrying the cylinders are lubricated either by a suitable liquid
lubricant, introduced through channels or passages and distributed on the bearing
surfaces by holes, or by the employment of rods of plumbago or carbon placed in
holes drilled either in the sleeves, which are lined with antifriction inetal, or in the
axis itself, in order to obtain a dry lubrication. These methods of lubrication
obviate all risk of the holes becoming choked and the cousequent excessive
friction.
The loose flour or stive which is produced within the casing enclosing the
cylinders is drawn off by means of tubes, which communicate with a common
exhaust fan.
When the mills are constructed with one pair of cylinders only the dimensions
of the frame work are reduced.
In this case the cylinders are connected together by friction gear, the hollow
discs screwed upon one of the sleeves being cast with a flange or ring the inner
side of which is in contact with a leather ring, partially imbedded in the side of
the disc, screwed upon the other sleeve and pressed against the flange by a helical
spring enclosed in a case. The sleeve of one of the cylinders is cast in one with
the driving pulley and disc, and is lined with a tube of antifriction metal.

page_text: The concentric adjustment of the cylinders, which revolve without partaking of
motion along their axes, is effected by the aid of conical rings. The cylinders are
pressed together by the action of two helical springs, contained in cases cast in one
with the main frame. To the cylinders may also be applied largo brushes, inetal
scrapers, and leather scrapers, which may be adjusted by means of milled headed
screws.
The pulley is capable of being either fixed on the shaft or axis, or of being
allowed to turn freely upon the same at pleasure by means of a spring bolt.
A hollow prolongation of the boss of the pulley carries an internal projection or
stop secured by a bolt and nut, and the shaft carries a sliding bolt or stud working
-in-a-recess-in-the-side of the shaft, and which, when forced out of the recess by the
action of a spring, comes in contact with the stop on the boss-of-the pulley, and causes
the shaft to turn with the said pulley. A conical hole is formed in one side of the
sliding bolt, and a pin provided with a corresponding cone at one extremity is
capable of sliding longitudinally in a hole bored in and concentric with the
extremity of the shaft. The other extremity of this pin is provided with a suitable
knob or handle, by means of which the cone may be pressed into the conical holo
in the side of the sliding bolt, so as to compress the spring and disengage the
extremity of the bolt from the stop on the boss of the pulley, which is then free to
turn upon the shaft.
According to another modification the hopper is provided with a sliding door,
and is carried up above the case of the mill so as to receive the produce direct from
the shoot: A-distributor of leather is provided on the front of the hopper, being
capable of adjustment by means of a segment of a worm-wheel- and an endless_
screw or worm.
A species of guard of sheet iron is provided in order to prevent any grain from
being thrown out in the space between the vertical side of the hopper and the
distributor.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Henry Johnson in the Great Seal Patent Office on the 6th
January 1881.
JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN AND APPLICABLE TO MACHINERY OR APPARATUS
FOR GRINDING OR REDUCING GRITS, GRAIN, SEEDS, AND OTHER LIKE MATERIALS."
A communication from abroad by Auguste Frédéric Beyer and Adolphe Gustavo
Beyer, both of Paris, in the Republic of France, Engineers.
The said Invention relates to mills constructed with porcelain cylinders
employed for grinding grits and other similar produce in a granular condition,
such as grain, kernels, seeds, and the like, and it consists of various improvements
in the arrangement and construction of the apparatus, as hereinafter described.
According to the said Invention the feeding device with toothed gear heretofore
employed is dispensed with, and in liou thereof a simple and practical arrange-
ment is adopted, by means of which the substance to be ground is supplied to the
cylinders in the greatest possible quantity which the said cylinders are capable of
treating.
The porcelain cylinders are mounted loosely upon fixed axes, lubricated either
by any suitable liquid lubricant, or by carbon, or plumbago introduced into holes
drilled in sleeves, the latter being cast in one with discs which grip and support
the porcelain cylinders.
These loose cylinders are driven or actuated by means of spring bolts or clutches,
and the cylinders of each pair are alternately caused to reciprocate in the direction
of their axos by means of a lateral cam in contact with a stationary friction
roller.
The loose flour or stive is drawn off at pleasure by means of a peculiar combination
of suction tubes, as hereinafter described.
The driving pulley actuating the cylinders is thrown in and out of gear by means
of a spring bolt easily moved and worked by a movable conical rod, and the
porcelain cylinders may be driven by friction, and the alternate motion along the
axes may be produced at the same time, as hereinafter described.
Means are also provided for enabling two pairs of cylinders in one mill to be
driven either by a single belt or by separate belts.
And in order that the said Invention may be fully understood I shall now
proceed moro particularly to describe the same, and for that purpose shall refer to
the several Figures ou the annexed two Sheets of Drawings, the same letters of
reference indicating corresponding parts in all the corresponding Figures.
Figure 1, Sheet 1, of the accompanying Drawings represents a front elevation
partly in section of a mill having two pairs of cylinders arranged end to end;
Figure 2 is a corresponding transverse section of the same; Figures 3 and 4 are
details shewing the construction of the cylinders and the mode of exerting horizonal
pressure.
Figure 5 is a vertical section drawn to a larger scale of an internal hopper con-
structed of enamelled cast iron and an adjustable distributer or feeder for delivering
the produce on to the cylinders; and Figure 5° is a longitudinal section of part of
the hopper corresponding to Figure 5.
Figure 6 is a transverse section of a wooden hopper and a distributer or feeder
corresponding to the one shewn in Figure 2; and Figure 6 is a longitudinal section
corresponding to Figure 6 of part of the said hopper; Figures 7 to 11 are details
of the distributer or feeder hereinafter described.
The porcelain cylinders C and C' are enclosed in a case B of wood having a
rectangular opening in the upper side, and the edges of this opening are provided

page_text: internally with depending ledges forming a hopper A, Figures 2, 6, and 6ª, the
lower edges of which are carefully fitted so as to come as close as possible to the
cylinders C, C', without being in actual contact therewith. This hopper may be
constructed of metal enamelled on the interior (Figure 5).
The hopper A, in either arrangement, may be surmounted by a hopper T,
Figure 2, of wood receiving the produce to be ground from a shoot E, and directing
it in to the hopper A, but in all cases the large area of the rectangular opening
causes the produce to be distributed on to one of the cylinders, usually the
cylinder C, which revolves with less rapidity than the other. The even or uniform
distribution of the produce over the cylinder is secured by means of an adjustable
distributer or feeder R. This distributer or feedor consists of a species of semi
cylinder, which may be either solid, as shewn in Figures 6, 8, and 10, or hollow, as
shewn in Figures 5, 7, and 9, and is free to revolve upon a turned bolt or axis
passed through the ends of the hopper A, through the case, and through lugs
carried by the side frames. A worm wheel s, Figure 6, or a segment of a worm
wheel S, Figure 5, is fixed on this semi cylinder at or about the centre, as shewn in
Figures 5, 6, and 7, so as to render it capable of accurate adjustment by means of
an endless screw or worm V, worked by hand, either by means of an external
knob D, Figure 5 and 5º, or by means of a crank handle m, Figures 6, 6.
A rake or comb P is also provided, the same being capable of turning on the
same axis r as a centre, and in consequence of the reciprocating movement along their
axes of the porcelain cylinder against which it bears, it regulates the feed accurately
according to the quantity of produce which it is desired to cause to pass between
the cylinders C and C. This sifting comb P may also be arranged so as to lie flat
against the feeder, or again it may be entirely dispensed with, and a toothed edge
at the side of the opening be substituted therefor.
All these parts may be readily detached by simply drawing out the central bolt
or axis
Figures 7 and 8 are details representing respectively sections of a hollow and a
solid semi cylindrical distributer or feeder.
According to another modification of the distributer or feeder, which is illustrated
in Figure 9, the comb is provided with an oval eye, by which it is suspended from
the axis carrying the distributor or feeder; and according to a further modification,
shewn in Figure 10, a piece c of leather is employed in lieu of the rake or comb
hereinbefore described.
Figure 11 is a section of the hopper shewing a rotary distributer or feeder
composed of one or more arms or blades of leather having a straight or serrated
edge forming teeth, which may be employed in substitution for the feeding and
distributing apparatus hereinbefore described.
In the operation of these devices the cylinder C', having a motion imparted to it
along its axis during its rotation, or having simply a rotary motion, draws with
it the layer of material to be ground, which is spread or distributed uniformly
over its entire length by the teeth of the comb P or the edge of the rake.
Those arrangements of feeders may be employed in combination with mills
constructed according to the Invention for which Letters Patent were granted to
me, dated the Sixteenth October, One thousand eight hundred and seventy seven,
No. 3824, with one or more pairs of cylinders, and also with cylinders coupled
together end to end on the same axis, and shrunk on according to the same
Invention. The ends of the cylinders in the latter case are separated by means of
a washer F, soldered or welded to the shaft G, Figure 3, when two cylinders are
coupled together. Mills of this description are provided with self lubricating
bearings composed of cast iron, and made of great length, carefully fitted and
ground. One of these bearings encloses an inclined flange or collar and a guide for
imparting reciprocating motion to the cylinder C, which rotates at a different
speed to the other cylinder, motion being imparted to it by means of an inter-
mediato cono pulley G', carried on an arm H, capable of adjustment for regulating
the tension of the belt.

page_text: In order to obtain the requisite pressure at the point of contact between the
cylinders spring I, Figure 4, in one length is provided for both pairs of cylinders,
the said spring turning a tightening screw i in the centre, or two separate springs
J and J', Figure 3, may be employed of equal strength, and each provided at the
centre with a tightening screw i, as shewn in Figuro 3.
The particles of grits that still adhere together on leaving the cylinders are
separated by a device designated a "detacher," consisting of a rotating brush R,
the parts of which are capable of adjustment by means of a screw k, so as to
cause them to work more or less closely, as required, and motion is imparted to
it by a belt running at the side of the belt which drives the mill, or by means of
suitable toothed wheels, or, again, by the axis carrying the cone pulley G'.
Figure 1, Sheet 2, represents a front sectional clevation of a mill constructed
according to another modification of the said Invention, with four cylinders carried
on fixed axes, the section being taken along the line 1-2, Figure 3. Figure 2 is a
corresponding end elevation; Figure 3 is a sectional plan corresponding to Figure 1,
the section being taken along the line 3, 4, Figure 2; Figure 4 is an end elevation,
partly in section, and Figure 5 is a corresponding horizontal section taken along
the line 5-6, Figure 4, of a mill constructed according to a further modification of
the said Invention.
Figures 6 to 12 are details hereinafter referred to, and Figures 13 and 14
illustrate a modification of the hopper hereinafter described.
In the arrangement illustrated in Figures 1, 2, and 3, each of the cylinders C, C¹,
is composed of a porcelain tube adjusted concentrically on the axis by the means
hereinafter described, the extremities of the tubes being pressed between hollow
discs c, c'. The discs c on the cylinders C¹ are cast in one with sleeves & which
revolve upon fixed shafts or axes A, A¹, and the discs c on the cylinders C are
cast in one with pulleys P, which may be either driven in pairs by a single belt or
separately, as in Figure 3.
The discs c' on the cylinders C' are scrowed on to the sleeves d, and the discs c²
on the cylinders C are cast in one with toothed wheels E; these wheels are in gear
with corresponding wheels E' turning upon studs cast in one with the frame, and
they are capable of imparting rotary motion at different speeds to the corresponding
cylinders C, C', when required, through the intervention of spring bolts or clutches t,
Figure 3.
The cylinders C, which have a reciprocating motion along their axes imparted
to them during their rotation, have their hollow rotating discs c¹ cast in one with a
lateral or side cam c³, the latter being maintained in contact by means of helical
springs r with a friction roller g, Figures 1 and 2, turning on a vertical axis, which
is supported in suitable bearings carried by the frame. This simple device produces
the requisite to and fro motion of the cylinders C upon their fixed axes A¹.
The said cylinders C₁ are pressed against the cylinders C by means of blade
springs R, the pressure exerted by the said springs being adjusted by screws v
working in bearings V.
The sleeves & carrying the cylinders are lubricated either by a suitable liquid
lubricant introduced through channels or passages e, and distributed on the bearing
surfaces by holes e', Figure 1, or in order to obtain a dry lubrication by employment
of rods of plumbago or carbon placed in holes drilled either in the sleeves which
are lined with antifriction metal (see detail longitudinal and transverse sections,
Figures 9 and 10), or in the axis itself, as shewn in the detail elevation and the
transverse section, Figures 11 and 12. These methods of lubrication obviate all
risk of the holes becoming choked and the consequent excessive friction.
The loose flour or stive which is produced within the casing enclosing the
cylinders C, C, is drawn off by means of tubes D, Figures 1, 2, 3, 4, and 5, which
communicate with a common exhaust pan.
When the mills are constructed with one pair of cylinders only, as shewn in
Figures 4 and 5, the dimensions of the frame work are reduced.

page_text: In this case the cylinders are connected together by friction gear in the following
manner, videlicet:-The hollow disc c' screwed upon one of the sleeves is cast with a
flange, the inner side of which is in contact with a leather ring a, partially embedded
in the side of the disc c', screwed upon the other sleeve, the said ring being pressed
against the flange by a helical spring & enclosed in a case S.
Figure 8 is a longitudinal section drawn to a larger scale of the cylinder C; the
sleeve d, which is cast in one with the driving pulley p and disc c, and is lined with
a tube d' of antifriction metal, being more clearly shown in that Figure.
The concentric adjustment of the cylinders C, which revolve without partaking
of motion along their axes, is effected by the aid of conical collars or shoulders, as
shewn in Figures 3 and 5. The cylinders C and C, Figures 4 and 5, are pressed
together by the action of two helical springs t contained in cases R cast in one
with the main frame, and one of which is shown in section in Figuro 4.
The same Figure also shows the application to the cylinders of large brushes m,
metal scrapers n, and leather scrapers o, which may be adjusted by means of
milled headed scrows.
The pulley P is capable of being either fixed on the shaft or axis A, or of being
allowed to turn freely upon the same at pleasure by means of a spring bolt
arranged as shown in Figures 6 and 7, Figure 6 being a vertical section taken
along the line 7-8, Figure 7, and Figure 7 being a horizontal section taken along
the line 9-10, Figure 6.
A hollow prolongation of the boss of the pulley carries an internal projection or
stop & secured by a bolt and nut, and the-shaft carries a sliding bolt or stud_u
working in a recess in the side of the shaft, and which when forced out of the
recess by the action of a spring comes in contact with the stop t and causes the
shaft to turn with the said pulley. A conical hole is formed in one side of the
sliding bolt u, and a pin ƒ provided with a corresponding cone at one extremity is
capable of sliding longitudinally in a hole bored in and concentric with the
extremity of the shaft. The other extremity of this pin is provided with a
suitable knob or handle, by means of which the cone may be pressed into the
conical hole in the side of the sliding bolt, so as to compress the spring and
disengage the extremity of the bolt u from the stop t, which is then free to turn
upon the shaft.
According to another modification, represented in Figures 13 and 14, the
hopper A is provided with a sliding door a, and is carried up above the case of
the mill so as to receive the produce direct from the shoot. A distributer P of
leather is provided on the front of the hopper, and is capable of adjustment
by means of a segment of a worm wheel and an endless screw or worm, the action
being similar to that of the corresponding parts on the arrangement described
with reference to Figures 5 to 10, Sheet 1 of the Drawing.
A species of guard T of sheet iron is provided in order to prevent any grain
from being thrown out in the space between the vertical side of the hopper and
the distributor.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original,
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is,-
First. The arrangements of distributers or feeders employed in combination with
large or wide openings forming hoppers, and which enable the cylinders to be
supplied with the maximum amount of produce which they are capable of reducing,
substantially as hereinbefore described.
Secondly. Mounting the porcelain cylinders loosely upon fixed shafts or axes,
and the combination of the peculiar devices for producing the differential speed
and the reciprocating motion of the cylinder C₁ along its axis, substantially as

page_text: herein before described and illustrated in Figure 3, Sheet 2, of the accompanying
Drawings.
Thirdly. The mode of lubricating either by means of any suitable lubricating
liquid or by the employment of carbon or plumbago, substantially as hereinbeforo
described.
Fourthly. Drawing off the loose flour or stive by means of tubes communicating
with an exhaust fan, substantially as hereinbefore describod.
Fifthly. The application and use of a detaching or separating appliance,
substantially as and for the purpose herein before described.
Sixthly. The mode of disengaging or disconnecting the driving pulley, sub-
stantially as hereinbefore described.
In witness whercof, I, tho said John Henry Johnson, have to this my
Specification set my hand and scal, this Thirty first day of December,
One thousand eight hundred and eighty.