A New or Improved Triturating and Emulsifying Machine.
Year: 1894

page_text: Date of Application, 5th Oct, 1894-Accepted, 9th Mar., 1895
COMPLETE SPECIFICATION.
A New or Improved Triturating and Emulsifying Machine.
1, WILLIAM B COWAN, 12 Trafalgar Square in the City of Guelph, Province
of Ontario, and Dominion of Canada, Physician, 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. .—
The object of my invention is a machine for quickly and easily grinding, and
thoroughly mixing medical substances-solid or Hund with water, oil, or other
suntable liquid media, by means of attition so that the substances are reduced to
mmpalpable atoms that are in intimate, and permanent admixture with the liquid
medium in which they are ground The medical substances may be solid in the
form of grains or powder as in a tituration, or fluid such as oils, extracts &c. as in
an emulsion.
I attain these objects by means of the mechanism illustrated in the accompanying
drawings, in which
Fig. 1 is a side clevation of the machine.
Fig. II. is a front view of the same with pan in section.
Fig 1. is an enlarged perspective view of the grinding stones, and the fork for
holding them in position.
Fig. IV is a plan of the revolving pau, gunding stones, and the fork aud
adjustable holder-showing in dotted lines how the stones automatically adjust
themselves to fit pana of variable size.
Fig V
is a perspective view of the adjustable fork-holder, with hold-back
Spring hinge or joint.
Similar letters refer to similar parts throughout the several views
The machine consists essentially of a revolving pau A in the bottom of which
lie one, two, or more concavo-convex comma_shaped grinding stones B and C of
stone or other suitable substance, made rounding on their under sides, and held
in position from above by a foih J. M which is entirely independent of the
revolving pan.
The pan A 18 revolved in the usual way by means of a treadle and drive wheel D
the shaft of which passes through a bushing in the stand E and carries on its other
end a gear wheel F, which in turn engages with the pinion G on the vertical shaft H
which carries the revolving pan; and which is stepped at its lower end into the
frame or stand E-the other end carrying the revolving pan passing through a
bearing in the table top I of the frame or stand E
The grinding stones B. and C. are shaped and bevelled into a concavo-convex
comma shape, with rounded under side the section changing from an oblong with
1ounded corners at the butt to a perpendicular line at the point, so as to gather the
substances (together with their containing media) from the edge of the revolving
pan A where it has been thrown by the centrifugal force of the machine-and
throw them in towards the centre, and under the stones, which are shaped so as to
pass the mixture under them in a thin stream, which gets thinner by means of the
weight of the stones as the solid particles are reduced till the whole is of the
consistency of cream or oil.
The material operated upon can be dry in the form of lumps or grains, and is
then reduced to an impalpable dust or powder.
The fork consists of two tangs M lar enough apart to allow the bases of the
stones to swing easily past each other Figs. 11. and IV., with a vertical stem J
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page_text: squared at the top, to prevent rotation when the holder is placed on it The fork-
holder K is hinged at one end to a post L Figs. I. and V, which is igidly secured
to the table top I outside the evolving pan, and of sufficient height to allow the
fork-holder to project over the edge of the pan The hinge joint is provided with
a hold back sping S of any suitable form which will hold the fork-holder either
down on the fork stem or up out of the way while the pan is being filled or fixed.
A square hole at the other end futs down over the square end of the folk stem J
thus holding it firm in place, and preventing any rotation of the stones when the
machine is in operation.
The fork socket or hole is placed vertically in the middle of the thick semi-
circular rounded butt or base of the stones, and the fork tangs fitting loosely into
the same forms a pivot round which the stone casily swings till the points are
arrested by the sides of the revolving pan.
When the machine is in operation the pan revolves in the direction shown by the
allows, Figs. I, II, IV, and V. and the fork being held rigidly by the fork-
holder K the friction of the pan, and the pressure of the material being operated
upon throws the points of the gunding stones B and C out till they touch the sides
of the revolving pan A against which they slide during the operation, then rounded
bases being fee to swing round the fork tangs as centres without interfering, and
yet practically close together, thus making the machine automatic in its regulation,
and enabling the stones to be used with pans of variable size.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed; I declare that what I
claim is:-
1st In a machine of the class described, the combination with a revolving pan,
and means for rotating the same, of the concayo-convex comma shaped grinding
stones mounted therein, as herein before described and illustrated in the diawings.
2nd. The concavo-convex comma shaped gimding stones B and C, made rounding
on the under sides, with base or butt rounded into a semi-circular foim round the
ends of the fork tangs which project into them, thus forming a pivot upon which
they swing till their points touch the edge of the revolving pan; actuated
automatically by the function of the revolving pan, and the pressure of the
material being operated upon, in connection with a revolving pan, and means for
operating the same as hereinbefore described and illustrated in the drawings.
3rd The foh J M. and holder K, consisting of tangs M and upright stem J
square at the top, the fork-holder K fitting on to and holding it firm in position;
said fork-holder being attached at its other end to a post L outside the revolving
pan by means of a binge controlled by a spring or springs of any suitable form for
the purpose of holding the fork-holder either down on the fork, or up out of
the way, the whole combined and operating, so that when the pan is in motion the
grinding stones are permitted to swing on the fork tangs till their points touch the
edge of the revolving pan, but are prevented from notating therewith, substantially
as bereinbefore described and illustrated in the diawings.
Dated this 8th day of September 1894.