A Machine for Pressing or Moulding Tablets.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
A Machine for Pressing or Moulding Tablets.
I, GEORGE HOWARD NEIDLINGER (Merchant), of 18, Warren Street, New York
City, County and State of New York, United States of America, do hereby declare
the nature of this invention to be as follows:-
This invention relates to a tablet machine adapted to produce tablets of any
desired shape and thickness and to conveniently discharge the finished product
from the forcing die of the plunger. The machine comprises a die, an anvil
adapted to enter into the die, and a plunger adapted to enter the die in an opposite
direction to press the material in the die to form the tablet and to finally discharge
the finished product.
The machine has a table open at the front to contain the material to be formed
into the tablet and in which is removably fixed a die flush with the table and pro-
vided with a bore of any desired shape. Into the die rises an anvil or plunger
fitted to slide vertically in a bearing containing a friction washer to hold the
plunger in position unless forced up or down. Its lower end rests on a spiral can
surface of a cam turning on a vertical axis so as to raise the plunger or to permit
the same to move downward, the rotary motion being limited by an adjustable
stop to determine the height to which the plunger is raised in the die.
When the anvil is in an uppermost position and forms the bottom for the die
the die is filled with the material for forming the tablet, the amount of material
being regulated by the distance that the plunger rises into the die which is in
turn regulated by the adjustable stop so that the amount of material may be
regulated at will by the adjustment referred to. A top plunger enters the die
from above to compress the material. It is secured in a stock fitted to slide verti-
cally in a standard, the rear face of the stock having rack teeth in gear with a
pinion on the axis of a lever handle. On the hub of the handle is a cam acting
on a vertically sliding rod whose lower end is pivoted to a bell crank lever whose
other arm is provided with a pusher arm which when the lower plunger is lowered
out of the die pushes the tablet off the same and discharges it from the machine.
11
1
1907
A. M. & WM. CLARK.
Chartered Patent Agents, 53, Chancery Lane, London.

page_text: 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:-
―
This invention relates to a tablet machine adapted to produce tablets of any
desired shape and thickness and to conveniently discharge the finished product
from the forcing die of the plunger.
The machine comprises a die, an anvil adapted to enter the die, means for raising
and lowering the said anvil, and a plunger adapted to enter the die in an opposite
direction to that of the anvil the said plunger being arranged to press the material
in the die to form the tablet and to force the latter out with the anvil to finally
discharge the finished product.
The invention also consists of certain parts and details and combinations of the
same as will be fully described hereinafter and then pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part of this
specification in which Figure 1 is a side elevation of the improvement. Figure 2
is a like view of the same with parts in a different position. Figure 3 is a front
elevation of the same. Figure 4 is a sectional plan view of part of the improve-
ment on the line 4-4 of Figure 3. Figure 5 is a transverse section of the
improvement, and Figure 6 is a sectional plan view of part of the improvement on
the line 66 of Figure 3. Similar characters of reference indicate corresponding
parts in all the figures.
The improved tablet machine is provided with a base A supporting a standard A'
carrying a table B open at the front and adapted to contain the material to be
formed into the tablet, In the table B is formed an opening for the reception
of a die C held in place in the table by a set screw C engaging in an annular
recess in the die the latter being flush with the top surface of the table as plainly
indicated in Figure 5. The die is provided with a central bore which may be of
any desired shape it being understood that dies with various forms of bores may
be inserted in the table B to form tablets of various shapes. Into the bore of the
die C rises an anvil D or plunger to hold the material in the bore during the time
it is compressed as hereinafter more fully described.
The anvil D is fitted to slide vertically in a bearing A² (Figures 5 and 6) project-
ing from the standard A¹ and containing a friction washer D¹ to hold the anvil
in position unless forced up or down as hereinafter described. The lower end of
the anvil D rests on the spiral cam surface E' of a cam E which is capable of being
turned on a vertical axis E² on the base A, by acting on the outwardly extending
arm E3 of the cam so as to bring the spiral cam surface at different points in con-
tact with the under side of the anvil ) to raise the latter or to permit the same
to move downwards according to the direction in which the cam E is turned. The
rotary motion of the cam is limited by a set screw E on arm E3 which abuts against
a stop pin F removably inserted in one of a series of apertures A3 formed in the
base A in the segment of a circle the centre of which is in the centre of the pin E²;
as will be readily understood by reference to Figure 4.
By the arrangement described the forward swinging movement of the arm E
is limited by the set screw E striking against the stop pin F and it is evident that
more or less turning motion can be given to the cam E by adjusting the stop pin F
correspondingly in the apertures A³. The arm E³ preferably projects from the
side of the cam at the highest edge thereof as shewn in the drawings so that when
the arm E3 is turned from left to right away from the pin F until it stands at
right angles to the base A. the lowest portion of the cam surface E¹ is directly
under the lower end of the anvil D as illustrated in Figure 2, and the upper end
of the said anvil is at a suitable distance below the lower end of the die C. When
the arm E³, however, is in the forward position with the set screw E' abutting
against the pin F, the anvil D is in a raised position and extends with its upper
end into the lower portion of the die C. When the anvil is in an uppermost position
and forms the bottom for the die C the die is filled with the material for forming

page_text: the tablet the amount of material being regulated in quantity by the distance that
the anvil rises into the die C. Now as the cam surface gauges this upward
movement of the die and the movement of the cam is limited by the set screw E
striking the stop pin F it is evident that, by adjusting the stop pin F in a corres-
ponding aperture and moving the arm forward until the set screw E strikes the
pin, the quantity of the material is gauged and the operator is enabled to regulate
the amount at will by the adjustment referred to.
A top plunger G enters the die C from above, to compress the material which
plunger G is secured by a set screw G¹ in a stock H fitted to slide vertically in a
bearing A forming part of the standard A', the rear face of the stock H having
rack teeth H' in mesh with a pinion I mounted to turn in a bore in the standard A
and forming part of a lever handle 1. The lateral displacement of the pinion
in its bearing is prevented by a washer I³. On the hub of the handle I' is formed
a cam surface 12 acting on a rod J fitted to slide loosely in a bearing A forming
part of the standard A³. A spring J presses the said rod J so as to hold the same
normally in an uppermost position. The lower end of the rod J is pivotally con-
nected with an arm K of a bell crank lever mounted to turn on a pin K' secured
to the bearing A² previously referred to. The other arm Ks of the bell crank
lever extends upwardly and is provided with a pusher arm K³ adapted to rest
against the rear of the anvil D when the latter is in an uppermost position and
to pass over the said anvil when the latter is in a lowermost position to push the
tablet carried on the upper end of the said anvil off the same and discharge it from
the machine.
The operation is as follows:-When the several parts are in a position illustrated
in Figure 1, the anvil D) is in an uppermost position that is it extends into the
die C, and the plunger G is likewise in an uppermost position above the table B
so as to permit of filling the die with the material to be formed into the tablet.
When this has been done the operator swings the lever handle I over into the
position shewn in Figure 2, whereby the pinion I is turned and the stock H with
the plunger G is moved downward and the lower end of the said plunger passes
into the die and compresses the material therein against the anvil D which forms
the bottom for the die. When this has been done the operator takes hold of the
arm E and swings the same to the right into the position shewn in Figure 2 to
bring the lowest point of the cam surface E' under the anvil D). As soon as this
has been done the operator presses the handle I still further downward into a
lowermost forward position so as to push the formed tablet, together with the
anvil I), downward until the tablet is out of the die below the table B as shewn in
Figure 5, it being understood that the anvil D slides downward in its bearing A
and is finally held therein by the friction washer when the handle I¹ is in its
lowermost forward position. When this has been done the operator swings the
handle I back to its former position and in doing so brings the cam face 12 over
the upper end of the rod J so that the spring Ji thereof now forces the rod J
upward whereby a swinging motion is given to the bell crank lever and the pusher
arm K³ thereof moves forward to push the tablet off from the upper end of the
anvil D. It then immediately recedes back to its former position, as the cam
face 12 passes off the upper end of the rod J, previous to the arm I' reaching its
final position as shewn in Figure 1. The operator now again takes hold of the
arm E3 and turns the cam E back to its former position, that is until the Bet
screw E strikes the stop F, so that the anvil D is raised into its uppermost position.
The above described operation is then repeated, that is the die is again filled with
the material, and the arm I' is swung forward to compress the material so as to
form the tablet.
..
It will be seen that by the arrangement described the operator is enabled to
readily adjust the anvil D in the die according to the amount of material desired
to be pressed into the tablet, and is also enabled to readily exchange the die, anvil
and plunger for other different shapes whenever desired.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is:-
.
1. A tablet machine comprising a die, an anvil adapted to pass into the said
die, means for raising and lowering the said anvil to move the latter into the die
and permit the same to pass out of the die, and a plunger adapted to pass into and
out of the die to press the material therein into a tablet and to force the latter
with the anvil out of the die for discharging the finished tablet substantially as
shewn and described.
2. A tablet machine comprising a die, an anvil adapted to pass into the said
die, means for raising and lowering the said anvil to move the latter into the die
and permit the same to pass out of the die, a plunger adapted to pass into and
out of the die to press the material therein into a tablet and to force the latter
with the anvil out of the die for discharging the finished tablet, and a device for
removing the tablet from the anvil on the receding of the said plunger from the
die substantially as shewn and described.
3. A tablet machine comprising a die, an anvil adapted to pass into the said
die, means for raising and lowering the said anvil to move the latter into the lie
and permit the same to pass out of the die, a plunger adapted to pass into and
out of the die to press the material therein into a tablet and to force the latter
with the anvil out of the die for discharging the finished tablet, and a device for
removing the tablet from the anvil and controlled from the means for operating
the said plunger substantially as shewn and described.
4. A tablet machine provided with a die and anvil adapted to pass into and
out of the said plunger and a manually operated cam for controlling the movement
of the said anvil substantially as shewn and described.
5. A tabiet machine provided with a manually operated can mounted to turn
and formed with a spiral cam surface substantially as shewn and described.
6. A tablet machine provided with a cam mounted to be turned and formed
with a spiral cam surface, and adjustable means for limiting the turning motion
of the said cam as set forth.
7. A tablet machine provided with a die, an anvil adapted to pass into and out
of the said die, and a cam mounted to be turned and having its axis eccentric to
the axis of the said anvil, the said cam having a spiral face engaged by the said
anvil substantially as shewn and described.
8. A tablet machine provided with a die, an anvil adapted to pass into and out
of the said die, a cam mounted to be turned and having its axis eccentric to the
axis of the said anvil the said cam having a spiral face engaged by the said anvil,
and an adjustable stop pin for limiting the turning motion of the said cam substan-
tially as shewn and described.
9. A tablet machine comprising a die, a slidable plunger for the said die, an anvil
adapted to pass into and form a bottom for the said die, and a cam mounted to
be turned and engaging the said anvil to regulate the thickness of the tablet to
be formed in the die substantially as shewn and described.
10. A tablet machine provided with an arm mounted to swing for discharging
the formed tablet from the machine, a spring-pressed rod connected with the said
arm and a cam for pressing the said rod to impart a swinging motion to the same
in one direction, the return movement of the arm being accomplished by the
spring of the cam substantially as shewn and described.
11. A tablet machine provided with a slidable anvil, means for raising and
lowering the said anvil, and a swinging arm normally locked in place by the said
anvil but adapted to swing over the same on lowering the anvil below the said arm
substantially as shewn and described.
12. A tablet machine provided with an anvil, a bearing in which the anvil is
fitted to slide, and a friction device for holding the anvil in place in the bearing
substantially as shewn and described.

page_text: 13. A tablet machine provided with an anvil, a bearing in which the anvil is
fitted to slide vertically and means for moving the anvil upward or downward in
the said bearing substantially as shewn and described.
A T
1000
A. M. & WM. CLARK.
Chartered Patent Agents, 53, Chancery Lane, London.