Improvements in Apparatus for Agitating or Stirring Mixed Paints.
Year: 1893

page_text: Date of Application, 14th June, 1893
Complete Specification Left, 28th Dec., 1893-Accepted, 3rd Feb., 1.94
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Agitating or Stirring Mixed
Paints.
I, GEORGE FREDERICK REDFERN, of the Firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a communication to
me by Charles John McLennan, in the City of Toronto, in the County of York, in
the Province of Ontario, Canada, Manufacturer), to be as follows:-
My invention relates to apparatus for agitating or stirring mixed paints, and the
object of the invention is to provide a means whereby the sediment which settles
at the bottom in paint already mixed may be kept stirred into the main body of
the paint.
In carrying out the invention I journal or support at the bottom of the
receptacle a series of beaters, which are preferably but not necessarily attached
at the bottom of two swinging bars and rotated in close proximity to the bottom
of the receptacle or tank, which bottom is formed preferably in the shape of an
arc of a circle from the pivotal centre of the swinging bar, which is connected
by bars to arms on a rocking shaft which is operated so as to cause the rotating
beaters to travel backwardly and forwardly across the arc-shaped bottom of the
tank or receptacle.
The shaft
The swinging bars are pivotted on a stud at the top of the tank.
carrying the beaters is journalled in the bottom ends of the swinging bars, and
the beaters have outwardly extending wings.
A cross-bar or guard is bolted at each end to the swinging bais. The rocking
shaft is journalled in bearings secured to the side of the tank or receptacle.
An aim is secured to the end of the rock shaft, and has journalled in its
upper end a swivel block. A connecting rod is pivotally connected at one
end by pins to a swivel block and at the other end between jaws of a ring
through which extends an adjustable pin secured in a grooved block attached to
or forming part of a worm-wheel.
The main driving shaft is journalled in bearings in a bracket. Another shaft
is provided with a suitable loose and driving pulley. A woim secured on this
shaft meshes with the worm-wheel. A sprocket wheel is secured on the inner
end of the said shaft inside the stud or small end of the shaft. The said
sprocket wheel is connected by a sprocket chain to a sprocket pinion secured on
the end of the beater-shaft which is journalled in the swinging bars as before
stated.
A series of hinged flaps are binged on longitudinal bars, and a series of arms
are attached to the pivot pins of the flaps and pivotally connected to a
connecting bar. Another arm is attached at one end to one of the pivot pins
of the flaps, a rod being pivotally connected to this arm and provided with a
loop end and held in position at the top by a guide. By raising the arm by
the rod upon the beaters being rotated, such downwardly extending flaps will
not interfere with the beaters keeping the paint thoroughly mixed from top to
bottom of the tank.
The operation is as follows :-
When the pulley-shaft is caused to rotate, the worm meshing with the worm-
wheel causes it to slowly rotate and he means of the crank-vin and its connection

page_text: by the rod to the arm on the rock shaft, the swinging bars connected by the
arms to the arms on the rock shaft are caused to gradually swing on the pivotted
studs so that the bottom end travels backwards and forwards very gradually
across the arc-shaped bottom of the tank or receptacle. At the same time the
beaters are caused to very quickly rotate through the sprocket wheels and
sprocket chain. By this means constant commotion is caused at the bottom of
the tank and as the beaters sweep backward and forward from one side to the
other it will be seen that it will be impossible for any sediment to collect at
the bottom of the receptacle and that the mixed paint will be kept in a state
of mixture of a uniform thickness throughout.
Should the paint settle when not in use and the beaters not moving, it will
be obvious that by the simple arrangement above described all sediment may be
gradually and perfectly stirred up again into the body of the mixed paint and
kept perfectly mixed during the movement of the beaters.
In order to prevent any possibility of the paint settling at the bottom of the
tank in sufficient quantity to prevent the beaters from being rotated when the
paint has not been used for a long time I have provided the hinged flaps as
before stated. It will be understood that such flaps when raised will receive
the sediment from the major portion of the tank and that only a slight sediment
will accumulate at the bottom, which sediment would not be sufficient to prevent
the beaters from being rotated by the mechanism.
As the major portion of the sediment would settle upon the flaps, it will also
be understood that, upon the flaps being thrown down, such sediment will be
broken into individual sections which will be dropped down between the flaps
and come in contact with the rotating beaters which will very quickly break
them up.
The flaps will be especially advantageous where the shaft of the
beaters is journalled in stationary bearings and has not the arc lateral movement
as described.
Instead of the sprocket wheel and pinion and sprocket chain an equivalent
driving mechanism could be used, such bevel driving gear and a connecting rod
between the pulley-shaft and main driving shaft where it is necessary to drive
the beaters at a high rate of speed.
The hinged flaps will also form a protective frame by which articles being
dipped will be prevented from coming against the beaters.
Instead of the beaters being rotated the frame can be constructed with beaters
extending downwardly from beneath it and a reciprocating motion be imparted
to such frame and so accomplish the desired result but I have found from
experience that when the beaters are placed on the shaft and arranged as herein-
before described the best result is attained. Instead of one shaft being employed
a number of shafts may extend across the receptacle and be geared together but
this is mere duplication. Further two shafts can be employed having sprocket
wheels located on them and connected together by sprocket chains across which
sprocket bars may extend with beaters attached to them which would serve the
same purpose, or sprocket chains can be placed close enough together and have
beaters extending out from them which would accomplish the same result.
I do not wish, however, to confine myself to the exact way in which the
beaters are arranged as there are various analogous or equivalent ways which
might with equal facility be adopted and yet accomplish the object of the
invention.
Dated this 14th day of June 1893
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Agitating or Stirring Mixed
Paints.
I, GEORGE FREDERICK REDFERN, of the Firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a communication
to me by Charles John McLennan, of the City of Toronto, in the County of York,
in the Province of Ontario, Canada, Manufacturer) 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 apparatus for agitating or stirring mixed paints, and the
object of the invention is to provide a means whereby the sediment which settles at
the bottom in paint already mixed may be kept stirred into the main body of the
paint.
In carrying out the invention I journal or support at the bottom of the receptacle
a series of beaters, which are preferably but not necessarily attached at the bottom
of two swinging bars and rotated in close proximity to the bottom of the receptacle
or tank, which bottom is formed preferably in the shape of an arc of a circle from
the pivotal centre of the swinging bar, which is connected by bars to arms on a
rocking shaft which is operated so as to cause the rotating beaters to travel back-
wardly and forwardly across the arc-shaped bottom of the tank or receptacle in the
manner hereinafter more particularly explained.
Fig. 1, is a perspective view of my paint receptacle or tank, portion of the side
being broken away to exhibit the construction and operation of my invention.
Fig. 2, is a longitudinal section through Fig. 1, showing my hinged flaps designed
when closed to prevent too much paint from settling at the bottom of the tank, and
means for operating the same.
.
In the drawings like letters of reference indicate corresponding parts in each
figure.
A, is the receptacle, which is designed to be filled or partially filled with paint.
B, are swinging bars pivoted on the stud, b, at the top of the tank. C, is a shaft
jourualled in the bottom ends of the swinging bars, B, and provided with a series
of beaters, D, having the outwardly extending wings, d.
E, a cross bar or guard which is bolted at each end to the swinging bars, B.
F, are connecting bars, one end of which is pivotally connected to the top of the
swinging bars, B, and the other pivotally connected to the top of the arms, G,
secured to the rock shaft, H, which is journalled in bearings, h, secured to the side
of the tank or receptacle, A.
I, is an arm secured to the end of the rock shaft H, and having journalled in its
upper end a swivel block i. J, is a connecting rod pivotally connected at one end
by the pin, j, to the swivel block, i and at the other end between the jaws, k¹, of
the ring, k, through which extends the adjustable pin, K, secured in the grooved
block, L, attached to or forming part of the worm wheel, M.
N, is the main driving shaft which is journalled in bearings in the bracket, O.
One of the caps of the journal is shown removed. The shaft, N, is provided with
a suitable loose and driving pulley as indicated. P, is a worm secured on the
driving shaft, N, and meshing with the worm wheel, M. Q, is a sprocket wheel
secured on the inner end of the shaft, N, inside of the stud or small end, b, of the
shaft. The sprocket wheel, Q, is connected by sprocket chain, R, to the sprocket
pinion, S, secured on the end of the shaft, C, which is journalled in the swinging
bars, B, as before stated.
T, are a series of flaps hinged at, t, on the longitudinal bars, U. V, are a series

page_text: of arins attached to the pivot pins of the flaps, T, and pivotally connected at, r, to
the connecting bar, W. X, is an arm attached at one end to one of the pivot
pins, t, of the flaps, T. Y, is a rod which is pivotally connected to the arm, X, and
provided with a loop end, y. The rod, Y, is held in position at the top by the
guide, y. It will be seen by raising the arm, X, by the rod, Y, into the position
shown by dotted lines in Fig. 2, that upon the beaters being rotated, such down-
wardly extending flaps will not interfere with the beaters keeping the paint
thoroughly mixed from top to bottom of the tank.
Having now described the principal parts involved in my invention I shall
briefly describe the operation. When the shaft, N, is caused to rotate, the
worm, P, meshing with the worm wheel, M, causes it to slowly rotate and by
means of the crank pin, k, and its connection by the rod, J, to the arm, I, on the
rock shaft, H, the swinging bars, B, connected by the arms, F, to the arms G, on
the rock shaft are caused to gradually swing on the pivoted studs, b, so that the
bottom end travels backwards and forwards very gradually across the arc-shaped
bottom, A', of the tank or receptacle, A. At the same time the beaters, D, are
caused to very quickly rotate through the sprocket wheel, S, sprocket chain, R, and
sprocket wheel, Q. secured on the inner end of the shaft, N. By this means constant
commotion is caused at the bottom of the tank and as the beaters sweep backwardly
and forwardly from one side to the other it will be seen that it will be impossible
for any sediment to collect at the bottom of the receptacle and that the mixed paint
will be kept in a state of mixture of a uniform thickness throughout.
Should the paint settle when not in use and the beaters not moving, it will be
seen that by the simple arrangement above described that all sediment may be
gradually and perfectly stirred up again into the body of the mixed paint and kept
perfectly mixed during the movement of the beaters.
In order to prevent any possibility of the paint settling at the bottom of the tank
in sufficient quantity so as to prevent the beaters from being rotated when the paint
has not been used for a long time I have provided as before stated the hinged
flaps, T. It will be seen that such flaps when raised into the position shown in full
lines in the drawing will receive the sediment from the major portion of the tank
and that only a slight sediment will accumulate at the bottom, which sediment
would not be sufficient to prevent the beaters from being rotated by the mechanism
shown.
As the major portion of the sediment would settle upon the flaps, T, it will be
seen that upon the flaps being thrown down into the position shown in dotted lines
that such sediment will be broken into individual sections which will be dropped
down between the flaps and come in contact with the rotating beaters which will
very quickly break them up. The flaps it will also be seen will be especially
advantageous where the shaft of the beaters is journalled in stationary bearings
and has not the arc lateral movement as described.
It will be seen that instead of the sprocket wheel Q, and pinion, S, and sprocket
chain, R, that an equivalent form of drive might preferably be used in the shape
of bevel driving gear and connecting rod between the driving shaft, C, and main
diving shaft, N, where it is necessary to drive the beaters at a high rate of speed.
It will also be seen that the hinged flaps, T, will also form a protective
frame by which the articles being dipped will be prevented from coming against
the beaters.
Although I show a series of beaters designed to be rotated it will of course be
understood that the frame might be constructed with beaters extending downwardly
from beneath it and that a reciprocating motion might be imparted to such frame
and accomplish the desired result but I have found from experience that when the
beaters are placed on the shaft and arranged as herein before described and
particularly shown in the drawings that the best result is attained. Instead of one
shaft being employed a number of shafts might extend across the receptacle and be
geared together but this is meie duplication. Again there might be two shafts
employed having sprocket wheels located on them and connected together by

page_text: be used in the dipping process, it being very important that such paint should be
of a uniform thickness. By the means above described all sediment is prevented
from accumulating in the bottom of the receptacle and is kept stirred up throughout
the body of the paint.
What I claim as my invention is.
1. The combination with the paint receptacle filled with mixed paint, of a series
of beaters journalled or supported in proximity to the bottom of the receptacle and
means whereby motion is imparted to the said beaters as and for the purpose
specified.
2. As an agitator for mixed paints, a receptacle provided with a series of
beaters secured on a shaft journalled in bearings in proximity to the bottom of
the receptacle and means for rotating the same as and for the purpose specified.
3. As an agitator for mixed paint a receptacle having an arc-shaped bottom and
provided with beaters secured on the shaft and journalled in the ends of the
swinging bars and means whereby such bars are swung on their pivots so as
to cause the beaters to travel gradually backward-and forward-from side to side
of the tank following the curve of the arc-shaped bottom as and for the purpose
specified.
4. The combination with the receptacle having the arc-shaped bottom, of
beaters secured in the shaft journalled in the swinging bars, means for rotating
the beaters and for causing their backward and forward movement from side to
side of the tank following the curve of the arc-shaped bottom as and for the purpose
specified.
5. The combination with the beaters, D, secured on the shaft, C, journalled in
the lower end of the swinging bars, B, means for imparting an arc-shaped lateral
movement to the beaters and for rotating the same, of the guard, E, arranged as
and for the purpose specified.
,6. The combination with the beaters, D, secured on the shaft, C, journalled in
the lower end of the swinging bars, B, connected to the bars, G, on the rock
shaft H, of means whereby a rocking movement is imparted to the shaft, H, as and
for the purpose specified.
7. The combination with the beaters, D, secured on the shaft, C, journalled in
the lower end of the swinging bars, B, connected to the bars, G, on the rock
shaft, H, by the bars, F, connected through the arm I, bar, J, and crank pin, K, to
the worm wheel, M, which derives movement from the worm, P, on the main
driving shaft as and for the purpose specified.
8. The combination with the beaters, D, secured on the shaft, C, journalled in
the end of the swinging bars, B, which are connected by the bars, F, arms, G,
rock shaft, H, arm, I, bar, J, crank pin, K, to the worm gear wheel, M, which
meshes with the worm, P, on the main shaft, N, of the sprocket wheel, Q, connected
by the chain, R, to the sprocket wheel, S, on the end of the shaft, C, as and for the
purpose specified.
9. The combination with a receptacle provided with a series of beaters secured on
a shaft journalled in bearings in proximity to the bottom of the receptacle of means
whereby the major portion of the sediment is suspended above the beaters as and
for the purpose specified.

page_text: 10. The combination with a receptacle provided with a series of beaters supported
and deriving movement in the bottom of the receptacle, of means whereby the
articles when dipped are prevented from coming against the beaters as and for the
purpose specified.
11. The combination with the receptacle provided with a series of beaters
secured on a shaft journalled in bearings in proximity to the bottom of the
receptacle, of the hinged flaps, T, connected together by the connecting bar, W,
and operated by the rod, Y, connected to an arm on the end of one of the pivot
pins of the flaps, T, as and for the purpose specified.
Dated the 28th day of December 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.