Apparatus for Measuring Comminuted Substances, such as Medicinal Powders, and for Charging Envelopes or the like with the same.
Year: 1892

page_text: Date of Application (in United Kingdom), 25th June, 1892
Complete Specification Left, 11th July, 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Apparatus for Measuring Comminuted Substances, such as Medicinal
Powders, and for Charging Envelopes or the like with the
same.
I, CASPAR FRIEDRICH HAUSMANN, of St. Gallen, Switzerland, Pharmaceutist
and Drug Manufacturer, do hereby declare the nature of this invention to be as
follows:
This invention has for object to enable small quantities of comminuted substances,
as, for instance, doses of medicinal powders to be separately and quickly measured
in an accurate manner, and to charge suitable envelopes, paper capsules, etc. with
the same.
In the accompanying drawings,
Fig. 1 is a vertical section through an apparatus of this kind provided with a
device for accurately determining the dose;
Fig. 2 is an elevation thereof;
Fig. 2 is an elevation of a modification;
Figs. 3 and 4 are cross sections on the lines - and y-y respectively, and
Fig. 5 is a detail view hereinafter referred to.
The apparatus consists in its simplest form of a tube a the edge of whose lower
end is sharpened or bevelled off and in which there moves a piston b which is
normally kept by a spiral spring d (which acts upon it or upon its rod c) at a
determined distance from the open lower end of the tube a. If now the open end of
the tube a be pushed into the powder, the tube will become filled up to the
piston with powder, which, on removal of the tube, will remain in the latter by
adhesion and can then be discharged by pushing forward the piston.
I provide such an apparatus with means for determining with accuracy the
position of the piston and consequently the amount of powder to be measured.
Upon the tube a, which is provided at its upper part with, for example, two
longitudinal slots a', there is loosely mounted an internally screw threaded
sleeve which bears at one end against a flange a of the tube a and at the
other end is held by a nut g screwed upon the tube a. The piston is capable
of moving in the tube a and its rod c is guided in the nut g and is connected
with a knob or button e which serves at the same time as an abutment for the
spiral spring d that bears against the nut g. Furthermore the rod c carries a
shoulder which serves as a stop and which by means of a guiding tooth or
projection ', Fig. 3, is guided in one of the longitudinal slots a¹ for the purpose
of preventing rotation of the piston, and which strikes against an adjusting ring i.
This ring as shown in Figs. 1, 3 and 4, surrounds the rod c and projects with two
wings or ribs, Figs. 3 and 5, through the two longitudinal slots a' of the tube a.
These wings or ribs are provided with screw threads engaging with that on the
inside of the sleeve f, so that by rotating the latter the ring which is guided in
the slots a', can be adjusted to a greater or less height, for the purpose of limiting

page_text: at a determined point by means of the stop the rearward movement of the
piston produced by the spring d, and thus to produce an increase or decrease in
the volume of the powder taken up through the open end of the tube a as may be
desired.
The position of the piston band consequently the capacity of the open end of
the tube is rendered visible by a scale c, Fig. 1 on the piston rod e. Furthermore
a divided scale, formed after the manner of a micrometer screw, on the periphery
of the sleeve may be employed to produce a finer adjustment corresponding to a
fraction of a revolution, the fixed point being at a².
While in the arrangement shown in Fig. 1, the scale c' is situated on the piston
rode and above the nut.g, which serves as a fixed or marking point, the said scale
is in the arrangement shown in Fig. 2 provided on the tube a and below the
adjusting sleeve the fixed or marking point being constituted by the marking
pin e situated on the piston rod c. The principle is in both cases the same, and the
two arrangements are shewn merely as examples of the various modifications of the
same that may be made.
The operation of the apparatus is very simple. After the position of the
piston has been determined by means of the sleeve, and the latter has then been
fixed by tightening up the nut g, then as above stated, the open end of the tube can
be inserted into the powder so as to take up a determined quantity of the same.
On removing the tube, any powder that may project beyond or adhere to the end
of the tube is scraped off (it may be by means of a scraping rod of the charging
vessel), the envelope or paper capsule to be charged is placed upon the tube a,
and by pressing on the knob e, the dose of powder taken up is ejected from the
tube a into the capsule.
Dated this 25th day of June 1892.
C. F. HAUSMANN,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Apparatus for Measuring Comminuted Substances, such as Medicinal
Powders, and for Charging Envelopes or the like with the
same.
I, CASPAR FRIEDRICH HAUSMANN, of St. Gallen, Switzerland, Pharmaceutist
and Drug Manufacturer, 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:-
This invention has for object to enable snall quantities of comminuted substances,
as, for instance, doses of medicinal powders to be separately, quickly, and accurately
measured and then charged into suitable receptacles such as paper capsules, etc.
In the drawings filed with my Provisional Specification
Fig. 1 is a vertical section of an apparatus constructed according to this
invention.
Fig. 2 is an elevation thereof;
Fig. 2 is an elevation of a modification;
Figs. 3 and 4 are cross sections on the lines, and y-y respectively; and
Fig. 5 is a detail view hereinafter referred to.
The apparatus consists in its simplest form of a tube a the edge of whose lower
end is sharpened or bevelled off and in which there moves a piston which is
normally kept by a spiral spring d (which acts upon it or upon its rod c) at a
determined distance from the open lower end of the tube a. If now the open end
of the tube a be pushed into the powder to be measured, the tube, as far as the
piston b, will become filled with the powder, which, on removal of the apparatus
will remain in the tube whence it can be subsequently discharged by pushing
forward the piston.

page_text: I provide such an apparatus with means for determining with accuracy the
position of the piston and consequently the amount of powder it can take up at one
time.
For this purpose upon the tube a, which is provided at its upper part with for
example, two longitudinal slots a', there is loosely mounted an internally screw
threaded sleeve which bears at one end against a flange a² on the tube a and at
the other end is held by a nut screwed upon the tube a. The piston is capable
of moving endways in the tube a; its rode is guided in the nut
9 and is connected
with a knob or button e which serves at the same time as an abutment for the
spiral spring d that bears against the nut . Furthermore the rod c carries a
shoulder which serves as a stop and which by means of a guiding tooth or
projection, (Fig. 3), is guided in one of the longitudinal slots a for the purpose
of preventing rotation of the piston. The shoulder his arranged to strike against
an adjusting ring, which as shown in Figs. 1, 3 and 4, surrounds the rod c and is
provided with two wings or ribs, Figs. 3 and 5, that project through the two
longitudinal slots a' of the tube a. These wings or ribs are provided with screw
threads that engage with those on the inside of the sleeve, so that by rotating
the latter, the ring, which is guided by the slots a', can be adjusted to a greater
or less height for the purpose of limiting at a determined point by means of the
stop the inward movement of the piston produced by the spring d, and thus to
produce an increase or decrease in the volume of the powder taken up through the
open end of the tube a as may be desired.
The position of the piston, and consequently the capacity of the open end of
the tube is rendered visible by a scale e', (Fig. 1) on the piston rod c. Furthermore
a divided scale, formed after the manner of a micrometer screw, on the periphery
of the sleeve may be employed to produce a finer adjustment corresponding to a
fraction of a revolution, the fixed point being at a².
While in the arrangement shown in Fig. 1, the scale c¹ is situated on the piston rod c
and above the nut y, which serves as a fixed or marking point, the said scale is in
the arrangement shown in Fig. 24, provided on the tube a below the adjusting
sleeve the fixed or marking point being constituted by the marking pin c
situated on the piston rod c. The principle is in each case the same, and the two
arrangements are shown merely as examples of the various modifications of the
same that may be made.
The operation of the apparatus is very simple. After the position of the
piston has been determined by means of the sleeve f, and the latter has then been
fixed by tightening up the nut g, then, as above stated, the open end of the tube
can be inserted into the powder so as to take up a determined quantity of the same.
On removing the tube, any powder that may project beyond or adhere to the end
of the tube is scraped off (it may be by means of a scraping rod of the charging
vessel), the paper capsule or other receptacle to be charged is placed upon the
tube and the dose of powder taken up ejected from the tube into the capsule
or receptacle by pressing on the knob e.
lly
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. For measuring comminuted substances such as medicinal powders and charging
the same into receptacles, apparatus comprising a tube a having an open lower end
that has a tapered or bevelled lower edge, a piston 6 adapted to move endways
within the tube, and a spring d acting to move the piston inward and away from
the open end of the tube and into contact with a stop, the arrangement being such
that by inserting the open end of the tube into a powder, a determined quantity or
dose thereof will be taken up by the open end of the tube and by pushing the
piston forward the powder thus taken up can be discharged into a receptacle
substantially as described.
2. In apparatus of the kind referred to in the preceding claim, the device for

page_text: regulating the quantity or dose of powder to be taken up, consisting of an adjustable
ring in combination with a stop fixed on the piston rod c as set forth.
3. In apparatus of the kind referred to in Claim 1, the adjustable ring i, provided
with ribs or wings that extend through slots in the tube a, in combination with
the internally screw threaded sleeve farranged to engage with the ribs or wings i¹
and to be fixed or clamped in position by means of a nut substantially as described.
4. Apparatus of the kind referred to in Claim 1, provided with the scale c' for
indicating complete revolutions of the adjusting sleeve, with or without a scale or
division on the periphery of the said sleeve for indicating fractions of a revolution
thereof as set forth.
5. The improved apparatus for measuring comminuted substances such as
medicinal powders and charging the same into receptacles constructed arranged and
operating as described and shown.
1000
C. F. HAUSMANN,
By L. W., per F. B.