Improvements in Apparatus for Mixing Granular, Pulverulent, or Flocculent Materials.
Year: 1895

page_text: Date of Application, 25th Apr., 1895
Complete Specification Left, 27th Jan., 1896-Accepted, 29th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Mixing Granular, Pulverulent, or
Flocculent Materials.
I, DAVID BURR, of Westfield, Derby Road, Croydon, in the County of Surrey,
Engineer, do hereby declare the nature of this invention to be as follows:-
"
My invention relates to a construction of apparatus for mixing granular
pulverulent or flocculent materials, such as flour, paints, drugs, chemicals, spices,
tea, coffee, and the like, consisting of a revolving drum, on the opposite sides of
which are arranged "lifters or flat, angular or curved plates, so arranged that on
the rotation of the drum the lifters on the one side thereof will raise a portion of
the charge to a certain height and will then deliver it across the drum on to the
lifters on the other side, which will in their turn deliver the material back to the
first named side, and so on continuously, until a perfect mixing of the charge has
been effected.
One side of the drum is provided either with a central opening or with a number
of radial or other passages leading from the centre to the periphery, which openings
are suitably closed during the mixing, but are opened when the mixing is completed,
whereupon the lifters on that side of the drum are made to deliver the material
through such central or other openings or channels, to the outside.
To facilitate such discharge I prefer to make the lifters on that side of the drum
either with a curved or angularly bent surface so as to effectually scoop up the
material, and deliver it to the opening. In some cases I make the discharge
opening in the periphery instead of at the centre.
Dated this 25th day of April 1895.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Apparatus for Mixing Granular, Pulverulent, or
Flocculent Materials.
I, DAVID BURR of Westfield, Derby Road, Croydon in the County of Surrey,
Engineer, 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:-
My invention relates to a construction of apparatus for mixing granular
pulverulent or flocculent materials, such as flour, paints, drugs, chemicals, spices,
tea, coffee, and the like, consisting of a revolving drum, on the opposite sides of
which are arranged "lifters" or flat, angular or curved plates, so arranged that on
the rotation of the drum the lifters on the one side thereof will raise a portion of
the charge to a certain height and will then deliver it across the drum on to the
lifters on the other side, which will in their turn deliver the material back to the
first named side, aud so on continuously, until a perfect mixing of the charge has
been effected.

page_text: One side of the drum is provided either with a central opening or with a number
of radial or other passages leading from the centre to the periphery, which
openings are suitably closed during the mixing, but are opened when the mixing is
completed, whereupon the lifters in that side of the drum are made to deliver the
material through such central or other openings or channels, to the outside.
To facilitate such discharge I prefer to make the lifters on that side of the drum
either with a curved or angularly bent surface so as to effectually scoop up the
material, and deliver it to the opening.
In some cases I make the discharge opening in the periphery instead of at the
centre.
Figure 1 of the accompanying drawing shews a side view and Figure 2 a cross
section of a mixing apparatus constructed according to my above described
invention. A is a revolving drum, supported on the side by an axis B carried by
the bracket F through which axis the drum receives rotary motion by means of
worm gearing C or by other suitable means. On the opposite side of the drum is
fixed a central conical mouthpiece D, having a circular path D¹ resting on
rollers E carried by the supporting bracket F. To the internal periphery and
sides of the drum are fixed the augular plates or lifters G G¹ formed as gusset
pieces projecting at an angle from the opposite sides, the lifters G on the side
where the mouth piece D is situated being curved as shewn so as to constitute
scoops guiding the material towards the central opening of the mouth piece D
which, during the mixing, is closed, by a cover H, secured by a screw I, or by
other suitable means.
On
The cover H having been removed, the materials to be mixed are introduced
into the drum through the mouth piece, and this is again closed by the cover.
the drum being slowly rotated, the lifters G G will raise up a portion of the
material from the bottom, and when at a certain height will deliver the material
across the drum on to the lifters on the opposite side, which in rising in their turn
will again deliver the material across the drum on to the first named lifters. In
falling on these the material will be directed towards the opening of the central
mouth piece, but as this is closed by the dome shaped door H, it will be directed
downwards thereby into the bottom of the drum again.
This action is continued until the desired degree of mixing has been effected
whereupon the door H is removed, and the lifters G will then act as scoops
delivering the mixed material through the mouth piece to the outside.
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:-
1. Apparatus for mixing granular, pulverulent or flocculent materials, consisting
of a revolving drum, on the opposite internal sides of which are formed angular
projecting gusset-like plates acting as lifters and so arranged as in rising to first
carry up the material to be mixed to a certain height and then to deliver the same
across the drum on to the corresponding angular plates on the other side of the
drum substantially as described.
2. In combination with the angular opposite lifting plates constructed and
operating as set forth in the first claim, providing a central opening on one side of
the drum closed by a cover when the mixing is being carried on, the angular lifting
plates on that side of the drum being made of a curved or angular form, so as,
when the said cover is removed, to act as scoops for delivering the material through
the opening, substantially as described.
Dated this 27th day of January 1806
ABEL & IMRAY,
Agents for the Applicant.