Year: 1896

page_text: Date of Application, 23rd Apr., 1895
Complete Specification Left, 11th Nov., 1896-Accepted, 23rd Jan., 1897
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A communication from abroad by PARKER JEWITT NOYES, of the Town of
Lancaster, in the County of Coos, State of New Hampshire, United States
of America, Manufacturer.
I, WILLIAM LLOYD WISE, of 46 Lincoln's Inn Fields, in the County of
London, Consulting Engineer and Chartered Patent Agent, do hereby declare the
nature of this invention to be as follows:-
Heretofore it has been the practice to employ automatic mechanism for making
pills by compression, such mechanism usually consisting of a mold-box with a die
therein, means for automatically regulating the charging of the mold box with
material, and an intermittently operating companion mold-member designed to
enter the box, and compress the matter contained therein.
The object of my invention is to provide a machine for coating pills by com-
pression, not an improved machine, but a new machine, for I believe myself to be
the first to devise a machine for doing such work.
To this end my invention consists in the peculiar features and combinations of
parts more fully described hereinafter and pointed out in the claims.
In the accompanying drawings,
Figure 1 represents a perspective view of my complete machine.
Figure 2 a sectional view of the compressing dies.
Figure 2 a similar view showing the dies in different positions, and
Figure 3 a vertical section through the main portion of the machine.
The reference letter A, indicates the table or frame-portion of the machine
supported upon legs A'.
Depending from the lower side of the table are the banging bearings a. These
are two in number, and have a revoluble shaft a' mounted therein. A spur gear B,
is fixed upon the end of this shaft, and is adapted to mesh with a pinion B' on the
ehaft B. One end of the shaft b, is journaled in the right hanger a, and the other
end in an independent banger 6. Mounted upon the shaft b, and between its
bearings and occupying nearly all the space upon the shaft, are fast and loose drive
pulleys, over which a suitable driving belt or band, not shown, is adapted to
operate. Rigidly secured to and rising vertically from the table A, is an
immovable standard C', which has secured thereto, at its bottom, and flush with
the upper face of the table A, a cam-plate C. A drum C, is revolubly mounted
upon the standard C' directly over the cam-plate, and is incapable of vertical
movement. A circumferential cog-rim c, is fixed upon the periphery of this drum,
and is adapted to mesh with the mutilated spur gear c', mounted upon a vertically
extending shaft . By means of the mutilated gear the drum is given an
intermittent motion necessary to the machine's proper operation.
Revolubly mounted upon the standard C and incapable of vertical movement
thereon, is a second drum D, which is of a diameter equal to that of the drum C
and of a vertical thickness about one half that of the said drum C. Fixed rigidly

page_text: upon the drum D and having an axis common to the axis of the drum is a second
circumferential cog-rim d', similar to the rim c, which is adapted to mesh with and
be driven by the second mutilated gear D'. This gear is rigidly fixed to the upper
extremity of the shaft c' and is mutilated in conformity with the mutilations of the
gear c', whereby the intermittent motion, similar to the intermittent motion of the
drum C, is imparted. to the drum D. The vertical shaft has a bearing in
the table A, and in the hanger which depends from the table bottom for a
distance equal to very nearly the distanco that the shaft c' extends below the
table A.
Mounted securely and immovably upon the lower extremity of the shaft is a
bevelled gear which meshes with a similar gear on the main shaft a', and
which receives a continuous rotary movement from the said main shaft, whereby
the shaft o, and the connected parts are operated.
Located a slight distance above the upper face of the drum C is a circular
disc F, which is fixed securely to the said drum and adapted to revolve in unison
therewith, on the standard C.
Arranged to be vertically movable within the drum C are the lower series of
gold members or dies which are located in the vertically extending passages F,
and whose upper extremities are adapted to operate in the opening, of the disc F.
These dies are preferably four in number, although it is only essential to my
invention that two be employed, they being mutilated to increase the producing
capacity of the machine. As the drum C revolves the mold members or dies F
travel upen the face of the cam-plate C which will impart to the dies a vertical
reciprocating motion regulated by the form of the cam-plate. This reciprocation
ie, of course, followed by the reciprocation of the head of the die in the opening
of the disc F. Arranged so as to project out from the standard C³ on opposite
sides thereof, and rigidly secured thereto, are the receiving hoppers or tanks G.
Each of these hoppers is provided with an opening G in its bottom which is so
arranged that the opening, in the disc F will, during the revolutions of the disc,
pass directly under it, and become charged with coating material.
Arranged on the left side of the standard C and supported rigidly on the
table A, by means of the leg G'is the pill or tablet feeding device g.. This device
consists of an inclined track or way g which is adapted to receive the tablets or
pills, and the lower end or the mouth of the way g' is stopped by means of a
finger bar 9 which is attended by mechanism for imparting to it an intermittent
vertically reciprocating movement, which is so timed that it will operate to release
the tablet whenever one of the openings f, of the disc F, passes the mouth or lower
end of the way g', and is adapted to deposit the tablet in the opening F when it is
so released. The mechanism for imparting to the finger its characteristic
movements consists of a second-class lever H which is fulcrumed to the standard H',
arising from the table A and connected rigidly at its free end to the finger bar g
This lever is swung on its fulcrumn by means of a vertically reciprocating rod h
which is fitted to slide through the table A and projects below the same until the
"shaft a' is reached, where it is provided with a stud or projection arranged in
the eccentric groove of the disc ; the disc being in turn mounted upon the
shaft a' and adapted to revolve in unison therewith. From this it will be apparent
by what means the finger is operated.
Arranged in the drum D in such juxtaposition with the mold members or dies F1,
as to occur directly over them are the companion mold members or dies I, which
operate in vertical slots 1' in the drum D and are provided with the enlarged
heads 1. These dies 1', are normally supported in such a position that they will
clear the hopper G, during the revolutions of the drum D, by means of a flexible
metallic plate 1 which extends under the head Iaud is supported upon the
drum D, by means of the standard l' and which is adapted to revolve in unison
with the revolutions of the drum D.
Mechanism is provided whereby the normal tendency of the plate I, is at proper
intervals, overcome and the dies depressed.
:.

page_text: This consists of a lever i fulerumed in the vertically extending standard
arising from the table A, and having its lower end extending below the table.
The lover i is so fularumed that it will be capable of swinging laterally on its
fulcrum and this lateral movement is effected by the cam mounted upon the
shaft a'; the eccentric face of the cam, being adapted at predetermined intervals,
to engage the lower end of the lever and move such lower end to the left. This
of course will be followed by the swinging of the upper arm to the right. Formed
integral with the end of the upper arm and rigidly secured thereto is no over-
hanging arm J which projects to the left just beyond the periphery of the drum D,
above and on a line with the heads of the dies I. The outer end of the arin J is
provided with a hammer J. It will be apparent that when the lever i is swung on
its fulcrum by the cam the hammer will be raised, ani when the cam conses to
net on the lever the hammer will by its weight and the weight of the lever i retura
with considerable violonce to its normal position. Now the operation of the cam
and the consequent operation of the lever i and its hammar, are so timed that the
hammer J will return to its normal position when one of the dies I is directly under
it, and it is by this means that the dies I are drivon down.
The pills or tablets to be coated are first placed in the inclined guide way or
groove g' of the feeding device g; they having been previously properly shaped. As
the drum C revolves one of the dies is moved by the cam plate C' vertically into
the opening f, of the disc F, for a distance sufficient to leave a small recess or
depression in the surface of the disc; the bottom of the recess being formed by
the upper end of the die. This is shown in full line by Figure 2. As the drum C
continues in its revolutions the opening/passes under one of the sugar hoppers G
and a small quantity of sugar or other substance is received in and carried away by
the opening. When the pill or tablet feeding device is reached, the feeding
mechanism is automatically operated to release one of the tablets therein contained
and deposit it in the opening so that it lies upon the sugar or other substance in
the opening. During this operation the dio F has been lowered by the cam-plate
for a distance aufficient to make the opening/large to receive and contain both
the tablet and the sugar or other substance. See lotted lines in Figure 2. While
the tablet was being deposited in the opening, the mutilated gears by which the
drum C is revolved, have operated to temporarily stop the revolutions of the drum.
This will allow the tablet to be deposited in the opening without any chance of
failure.
When the drum D has passed the feeding device, the cam C' operates to
again lower the die in the opening, and immediately subsequent to this
the opening passes under the second sugar hopper G, whereupon a second
supply of sugar or other substance is received upon the upper aide of the
pill or tablet in the recess. After the second hoppor G has been reached
the two drums proceed until the die directly over the pill reaches a point
under the hammer J whoreupon the mutilated gears operate to again stop
the revolutions of the drums C and D. At this period of the operation of the
machine the cam i³ operates upon the lever i so as to lift the hammer J and allow
it to return, strike the head of the punch 1 directly under it, and drive the said dio
down into the opening of the diso F with a forec sufficient to compress the sugar
or other substance above and below the tablet, firmly and fixedly thereon. This
operation is shown by Figure 2. After this has been accomplished the drums
start again and by another operation of the cam plate C' the pill in the recess, is
lifted out of the recess, by raising the die F', and deposited upon the disc F, from
which it may be removed. This completes the operation of coating the tablet.
As before stated it is only essential in my invention that oue set of dies be
employed, vie.: the die 1 and the die F, for these two dies perform the operation
of coating the pill by themselves, and I have shown here a second set of dies,
similar to the first, simply to make the machine capable of operating upon two
tablets or pills at the same time instead of one. The ends or points of the dies are
reduced in size and their engaging extremities may be formed in any desired or

page_text: preferred manner this being of course regulated by the shape and size of the tablet
coated.
Dated this 22nd day of April 1896.
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
A communication from abroad by PARKER JEWITT NOYES, of the Town of
Lancaster, in the County of Coos, State of New Hampshire, United States of
America, Manufacturer.
1, WILLIAM LLOYD WISE of 46 Lincoln's Inn Fields in the County of
London, Consulting Engineer and Chartered Patent Agent, 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 :-
Heretofore it has been the practice to employ automatic mechanism for making
pills by compression, such mechanism usually consisting of a mold-box with a die
therein, means for automatically regulating the charging of the mold box with
material, and an intermittently operating companion mold-member designed to
enter the box, and compress the matter contained therein.
The object of my invention is to provide a machine for coating pills by com-
pression, not an improved machine, but a new machine, for I believo myself to be
the first to devise a machine for doing such work.
To this end my invention consists in. the peculiar features and combinations
of parts more fully described hereinafter and pointed ont in the claims. .
In the drawings filed with my Provisional Specification:-
Figure 1 represents a perspective view of my complete machine.
Figure 2 a sectional view of the compressing dies.
Figure 2 a similar view showing the dies in different positions, and
Figuro 3 a vertical section through the main portion of the machine.
The reference letter A, indicates the table or frame-portion of the machine
supported upon legs A'.
Depending from the lower side of the table are the hanging bearings a.
These
are two in number, and have a revoluble shaft a' mounted therein. A spur gear B,
is fixed upon the end of this shaft, and is adapted to mesh with a pinion B on the
shaft b. Oue end of the shaft b, is journaled in the right hanger a, and the other
end in an independent hanger b. "Mounted upon the shaft b, and between its
bearings and occupying nearly all the space upon the shaft, are fast and loose drive
pulleys, over which a suitable driving belt or baud, not shown, is adapted to
operate. Rigidly secured to and rising vertically from the table A, is an immovable
standard C, which has secured thereto, at its bottom, and flush with the upper face
of the table A, a cam-plate C. A drum C, is revolubly mounted upon the
standard C dircotly over the cau-plate, and is incapable of vertical movement.
A circumferential cog-rim c, is fixed upon the periphery of this drum, nud is
adapted to mesh with the mutilated spur gear c', mounted upon a vertically
extending shaft . By means of the mutilated gear c' the drum, is given an
intermittent motion necessary to the machine's proper operation.
Revolubly mounted upon the standard Cand incapable of vertical movement
thereon, is a second drum D, which is of a diameter equal to that of the drum C
and of a vertical thickness about one half that of the said drum C. Fixed rigidly

page_text: upon the drum D and having an axis common to the axis of the drum is a second
circumferential cog rim d', similar to the rim c, which is adapted to mesh with and
be driven by the second mutilated gear D'. This gear is rigidly fixed to the upper
extremity of the shaft and is mutilated in conformity with the mutilations of
the gear ', whereby the intermittent motion, similar to the intermittent motion
of the drum C, is imparted to the drum D. The vertical shaft c' has a bearing
in the table A, and in the hanger which depends from the table bottom for
a distance equal to very nearly the distance that the shaft of extends below the
table A.
Mounted securely and immovably upon the lower extremity of the shaft is a
bevelled gear which meshes with a similar gear on the main shaft a', and
which receives a continuous rotary movement from the said main shaft, whereby
the shaft c, and the connected parts are operated.
Located a slight distance above the upper face of the drum C is a circular
disc F, which is fixed securely to the said drum and adapted to revolve in unison
therewith, on the standard C.
Arranged to be vertically movable within the drum C are the lower series of
mold members or dies which are located in the vertically extending passages F
and whose upper extremities are adapted to operate in the opening, of the disc F.
These dies are preferably four in number, although it is only essential to my
invention that two be employed, they being mutilated to increase the producing
capacity of the machine. As the drum C revolves the mold members or dies F
travel upon the face of the cam-plate C' which will impart to the dies a vertical
reciprocating motion regulated by the form of the cam-plate. This reciprocation
is, of course, followed by the reciprocation of the hend of the die in the opening of
the disc F. Arranged so as to project out from the standard C³ on opposite sides
thereof, and rigidly secured thereto, are the recoiving hoppers or tanks G. Each
of these hoppers is provided with an opening in its bottom which is so arranged
that the opening in the disc F will, during the revolutions of the disc, pass
directly under it, and become charged with coating material.
Arranged on the left side of the standard Cand supported rigidly on the table A,
by means of the leg G' is the pill or tablet feeding device g. This device consists
of an inclined track or way g' which is adapted to receive the tablets or pills, and
the lower end or the mouth of the way g' is stopped by means of a finger bar g
which is attended by mechanism for imparting to it an intermittent vertically
reciprocating movement, which is so timed that it will operato to release the tablot
whenever one of the openings, of the disc F, passes the mouth or lower end of the
way g', and is adapted to deposit the tablet in the opening f when it is so released.
The mechanism for imparting to the finger its characteristic movements consists
of a second-class lever H which is fulcrumed to the standard H', arising from tho
table A and connected rigidly at its free end to the finger bar g. This lever is
swung on its fulcrum by means of a vertically reciprocating rod h which is fitted to
slide through the table A and projects below the same until the shaft a' is reached,
where it is provided with a stud or projection 'arranged in the eccentric groove h³
of the disc ; the disc being in turn mounted upon the shaft a' and adapted
to revolve in unison therewith. From this it will be apparent by what means the
finger g' is operated.
Arranged in the drum D in such juxtaposition with the mold members or dies F,
as to occur directly over them are the companion mold members or dies I, which
operate in vertical slots I' in the drum D and are provided with the enlarged
heads I. These dies 1', are normally supported in such a position that they will
clear the hopper G, during the revolutions of the drum D, by means of a flexible
metallic plate I which extends under the head I and is supported upon the drum D,
by means of the standard I and which is adapted to revolve in unison with the
revolutions of the drum D.
Mechanism is provided whereby the normal tendency of the plate I', is at proper
intervals, overcome and the dies depressed.

page_text: This consists of a lever i fulcrumed in the vertically extending standard arising
from the table A, and having its lower end extending below the table. The lever i
is so fulcrumed that it will be capable of swinging laterally on its fulcrum and this
lateral movement is effected by the cam mounted upon the shaft a'; the eccentric
face of the cam, being adapted at predetermined intervals, to engage the lower end
of the lever and move such lower end to the left. This of course will be followed
by the swinging of the upper arm to the right. Formed integral with the end of
the upper arm and rigidly secured thereto is an overhanging arm J which projects
to the left just beyond the periphery of the drum D, above and on a line with the
heads of the dies I. The outer end of the arm J-is provided with a hammer J.
It will be apparent that when the lever i is swung on its fulcrum by the, cam the
hammer will be raised, and when the cam ceases to act on the lever the bammer
will by its weight and the weight of the lever i return with considerable violence to
its normal position. Now the operation of the cam and the consequent operation
of the lever i and its hammer, are so timed that the hammer J will return to its
normal position when one of the dies is directly under it, and it is by this means
that the dies I are driven down.
The pills or tablets to be coated are first placed in the inclined guide way or
groove of the feeding device g; they having been previously properly shaped.
As the drum C revolves one of the dios F¹ is moved by the cam-plate C' vertically
into the opening f, of the disc F, for a distance sufficient to leave a small recess or
depression in the surface of the disc; the bottom of the recess being formed by the
upper end of the die. This is shown in full liue by Figure 2. As the drum C
continues in its revolutions the opening passes under one of the sugar hoppers G
and a small quantity of sugar cr other substance is received in and carried away by
the opening. When the pill or tablet feeding device is reached, the feeding
mechanism is automatically operated to release one of the tablets therein contained
and deposit it in the opening fso that it lies upon the sugar or other substance in
the opening. During this operation the die F has been lowered by the cam-plate
for a distance sufficient to make the opening f large to receive and contain both the
tablet and the sugar or other substance. See dotted lines in Figure 2. While the
tablet was being deposited in the opening, the mutilated gears by which the drum C
is revolved, have operated to temporarily stop the revolutions of the drum. This
will allow the tablet to be deposited in the opening f without any chance of failure.
When the drum D has passed the feeding device g, the cam Coperates to again
lower the die in the opening f, and immediately subsequent to this the opening f
passes under the second sugar hopper G, whereupon a second supply of sugar or
other substance is received upon the upper side of the pill or, tablot in the recess.
After the second hopper G has been reached the two drums proceed until the die I
directly over the pill reaches a point under the hammer J whereupon the mutilated
gears operate to again stop the revolutions of the drums C and D. At this period
of the operation of the machine the cam i operates upon the lever i so as to lift the
hammer J and allow it to return, strike the head of the punch I directly under it,
and drive the said die down into the opening of the disc F with a force sufficient
to compress the sugar or other substance above and below the tablet, firmly and
fixedly thereon. This operation is shown by Figure 24. After this has been
accomplished the drums start again and by another operation of the cam-plate C
the pill in the recess, is lifted out of the recess, by raising the die F', and deposited
upon the disc F, from which it may be removed. This completes the operation of
coating the tablet.
As before stated it is only essential in my invention that one set of dies be
employed, viz. the die I and the dio F, for these two dies perform the operation of
coating the pill by themselves, and I have shown here a second set of dies, similar
to the first, simply to make the machine capable of operating upon two tablets or
pills at the same time instead of one. The ends or points of the dies are reduced in
size and their engaging extremities may be formed in any desired or preferred
manner this being of course regulated by the shape and size of the tablet coated.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A pill or tablet coating mechanism including the combination with a mould
provided with compressing mechanism, of devices for supplying a first deposit of
conting material to the mould, and devices for supplying a second deposit of coating
material upon and around a pill deposited within the mould and means for operating
the several parts in due order.
2. A pill or tablet coating mechanism including the combination with a mould
provided with compressing mechanism, of devices for supplying a first deposit of
coating material to the mould, a pill feeding guide leading to the mould, and devices.
for supplying a second deposit of coating material upou and around a pill deposited
within the mould and means for operating the several parts in due order.
3. A pill or tablet coating mechanism including the combination with a mould
having a die, of a mechanism for depositing the coating material in the bottom of
the mould, an automatic feeding mechanism for singly placing a pill on said deposit,
mechanism for making a second deposit to cover and surround the pill, and dies for
compressing the pill and deposits within the mould and means for operating the
Beveral parts in due order.
4. In au apparatus for conting pills or tablets the combination of a revolving
member provided with a recess open at both ends, a mould member or die arranged,
to be vertically movable in the revolving member and having its upper end arranged
in the opening therein, a second mould member or die located directly above the
recess in the revolving member and adapted to revolve in unison with the said
member, means for driving the second die down into the opening in the revolving
member at predetermined intervals and devices by which the pill or tablet and the
sugar or other substance to ho coated thereon are fed into the recess, whereby,
when the second die is driven into the recess, the sugar will be firmly and fixedly
coated upon the tablet, substantially as described.
1
3000