Year: 1897

page_text: Date of Application, 18th Oct., 1897
Complete Specification Left, 27th June, 1898-Accepted, 30th July, 1898
I, PAUL EUGÈNE MEINRAD JAMAIN, of 19, Rue des Roses, of Dijon Côte d'Or, in the
Republic of France, Manufacturer of Pharmaceutical preparations, do hereby declare
the nature of this invention to be as follows:-
In the specification of my former application for Letters Patent No. 23355 of 1897
1 have described an apparatus for compressing pharmaceutical and other powdered
substances, so as to form them into lozenges or tablets of perfect regularity.
This invention forming the subject of the present application, relates to improve-
ments which I have applied to the apparatus above referred to.
These improvements more especially consists in a device serving to obtain a uniform
distribution of the powdered substance in the matrices, so that the tablets or lozenges
receive an equal thickness all over their surface after a uniform compression has been
effected while on the other hand the formation of cones by the powdered substance
introduced into the matrices is thus avoided, which formation of cones, especially in
the case, where tablets or lozenges of large sizes are required, would have the result
that tablets of irregular compression are produced.
To enable the invention to be clearly understood I have represented the same by
way of example in the accompanying drawing which shows the whole arrangement of
the improved apparatus in vertical longitudinal section.
I will not again describe the various parts and the general operation of my
apparatus which have been explained in the above mentioned former specification.
As shown in the drawing, I arrange above the hopper a a feed reservoir 56, the
bottom of which is formed by a movable cylinder 53 provided with a variable number
of openings corresponding to the openings b of the hopper a and in each of which a
piston 54 is arranged, the position of which relatively to the amount of powdered
substance to be supplied through the hopper a, is regulated by set screws 55.
The oscillatory movement of this cylinder 53 is obtained by toothed wheels 52, 51
and 50, the latter one being mounted on the shaft of the cylinder c.
In my said former specification I have stated, that the powdered substance was to
be brought into the matrices and compressed between the stamps 6 and 7 so as to
form tablets or lozenges.
This powdered substance, especially in the case where tablets of large size are to be
formed, is of course introduced in comparatively large quantities into the matrices
or moulds and is thus liable to form cones which is the proceeding of the operation
result in the formation of tablets, the constituent mass of which is not regularly and
evenly compressed.
In order to attain a uniform compression all over the surface of the tablets or
lozenges, the powdered substance is, as previously brought into the matrices between
the stamped, but the arrangement is such that the stamps 7 engages sooner with the
matrices and so that between these rear stamps 7 and the front stamp 6 the desired
space is left.
For this purpose the rear-stamp holder 12 receives a movement of translation
through the medium of symmetrical levers 48, the path or stroke of which is regulated

page_text: by the set screw 49 according to the amount of powdered substance to be brought
into the matrices.
These levers 48 are connected by connecting rods 46 provided with friction
rollers 47 placed in contact with the cams 46 fixed on the shaft 45 which receives its
movement from the toothed wheel 41' actuated by the pinion 40.
The connecting rods 9, connected to the support. 8 which holds the stamps 6, are
pivotally connected to a lever 9', which oscillates about the axis 9³.
This lever 9¹ has its lower end connected to a connecting rod 92 which carries the
friction rollers 10 which are in contact with the cam 11 keyed on the shaft 45,
which latter receives its movement from the toothed wheel 41' actuated by the
pinion 40.
From the preceding description it will be readily understood that the powdered
substance brought between the stamps, will take up the whole free space and, as the
stamps are set in motion, the powdered substance filling the intermediate space will
become evenly and energetically compressed all over the surface of the tablet or
lozenge, whatever may be its diameter and thickness.
Dated this 18th day of October 1897
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in Apparatus for Compressing Powdered Substances.
I, PAUL EUGÈNE MEINRAD JAMAIN, of 19, Rue des Roses, Dijon Côte d'Or, in the
Republic of France, Manufacturer of Pharmaceutical preparations, 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:-
In the specification of my former application for Letters Patent No. 23355 of 1897
I have described an apparatus for compressing pharmaceutical and other powdered
substances so as to form them into lozenges or tablets of perfect regularity.
The invention forming the subject of the present application relates to improve-
ments which I have applied to the apparatus above referred to.
These improvements more especially consist in a device serving to obtain a
uniform distribution of the powdered substance in the matrices, so that the tablets
or lozenges receive an equal thickness all over their surface after a uniform
compression has been effected while on the other hand the formation of cones by the
powdered substance introduced into the matrices is thus avoided, which formation of
cones, especially in the case, where tablets or lozenges of large sizes are required,
would have the result that tablets of irregular compression are produced.
To enable the invention to be clearly understood I have represented the same by
way of example in the drawing accompanying my Provisional application which shows
the whole arrangement of the improved apparatus in vertical longitudinal section.
I will not again describe the various parts and the general operation of my
apparatus which has been explained in the above mentioned former specification.
As shown in the drawing, I arrange above the hopper a a feed reservoir 56,
the bottom of which is formed by a movable cylinder 53 provided with a variable
number of openings corresponding to the openings 6 of the hopper a and in each
of which a piston 54 is arranged, the position of which relatively to the amount of
powdered substance to be supplied through the hopper a, is regulated by set
screws 55.

page_text: The oscillating movement of this cylinder 53 is obtained by toothed wheels 52, 51
and 50, the latter one being mounted on the shaft of the cylinder c.
In my said former specification I have stated, that the powdered substance was to
be brought into the matrices and compressed between the stamps 6 and 7, so as
to form tablets or lozenges.
This powdered substance, especially in the case where tablets of large sizes are
to be formed, is of course introduced in comparatively large quantities into the
inatrices or moulds and is thus liable to form cones which in the operation result in
the formation of tablets, the constituent mass of which is not regularly and
evenly compressed.
In order to attain uniform compression all over the surface of the tablets or
lozenges, the powdered substance is, as previously, brought into the matrices between
the stamps, but the arrangement is such that the stamp 7 engages sooner with the
matrices and so that between these rear stamps 7 and the front stamp 6 the desired
space is left.
For this purpose the rear stamp-holder 12 receives a movement of translation
through the medium of symmetrical levers 48, the path or stroke of which is
regulated by the set screw 49 according to the amount of powdered substance. to he
brought into the matrices.
These levers 48 are connected by connecting rods 46' provided with friction
rollers 47 placed in contact with the cams 46 fixed on the shaft 45 which receives
the movement from the toothed wheel 41' actuated by the pinion 40.
The connecting rods 9, connected to the support 8 which holds the stamps 6, are
pivotally connected to a lever 9¹ which oscillates about the axis 93.
This lever 9¹ has its lower end connected to a connecting rod 92 which carries the
friction rollers 10 which are in contact with the cam 11 keyed on the shaft 45,
which latter receives its movement from the toothed wheel 411 actuated by the
pinion 40.
From the preceding description it will be readily understood that the powdered
substance brought between the stamps, will take up the whole free space and,
as the stamps are set in motion, the powdered substance filling the intermediate
space will become evenly and energetically compressed all over the surface of the
tablet or lozenge, whatever may be its diameter and thickness.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
The improvements in apparatus for compressing powdered substances, substantially
as herein described with reference to the drawing and for the purpose set forth.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.