Year: 1899

page_text: I, DENIS ROURKE, of The City Bakery, Store Street, Dublin, Ireland, Baker,
do hereby declare the nature of this invention to be as follows:--
This invention has reference to improvements in dough mixing machines, and is
especially designed for that type of machine commercially known as the Univer-
Saf Doughing Machine.
The first part of my invention relates to the "tilting drum" of dough mixing
machines, that is, the chamber or receptacle in which the different varieties or
Hour are received for mixing.
This drum is fed from a hopper overhead, through a shoot of canvas or other
suitable flexible material from the mouth of which the flour falls into the open
drum.
Upon the completion of the process of mixing, the drum is tilted or turned
forward towards the attendant by suitable gear and the mixed dough removed.
Now the drum herein described is open at the top owing to the difficulty of
arranging a lid or cover which will not interfere with the introduction of the
Hour on the one hand, or the tilting movement on the other hand, the result
being that a portion of the Hour escapes during its passage from the supply shoot
to the drum, and also during the process of mixing.
propose to provide a lid or cover which will fulfil the required conditions.
This ind or cover I prepare to fit tightly over the drum, and 1 hinge it at its rere
longitudinal edge to a suitable ledge fixed to the drum so as to fall towards the
front edge. The centre of the lid or cover is provided with a suitable aperture to
which the free end of the flexible shoot is attached, while its front edge is provided
with an eye bolt which engages with the hooked end of a suspension chain or
stays hung from overhead, as presently described.
The action of this hid or cover is briefly as follows:-
While the flour is being fed to the tilting drum the lid is firmly closed down and
prevents the escape of any flour.
On the completion of the process of mixing, the lid is slightly raised by the
attendant and attached to the overhead suspension chain or stays.
The drum is then gradually tilted forward, while the lid recedes upwards so that
when the drum is fully tilted forward the opening is completely exposed and the
mixed dough may be removed as readily as though the lid were not present.
Upon restoring the drum to its normal position the lid will automatically resume
its original place and on being disengaged from the suspension chain will close
down firmly on the drum, when the latter is ready to receive another charge of
flour.
The second part of my invention relates to the hopper arranged over the
tilting drum through which the flour is supplied for mixing.
The discharge orifice of this hopper is usually controlled by a shutter which
slides horizontally, whereby the orifice is opened or closed as required.

page_text: This arrangement is productive of waste, inasmuch as each time the shutter is
drawn, particles of flour are drawn with it and are blown about the bakehouse.
This defect I propose to remedy by substituting for the sliding shutter a
pair of falling shutters. that is to say two shutters, each being hinged to the
opposite longitudinal edges of the orifice and opening in the centre.
These shutters are operated by suitable cords attached to the weighing gear of
the hopper in such a manner that the shutters remain closed during the lifting and
weighing of the flour, whereas after the operation of weighing and while the
hopper is being lowered to its normal position the cords relax, thus automatically
releasing the shutters which open under the weight of the flour allowing same
to fall into the tilting drum underneath.
The third part of my invention relates to an improved method of raising the
hopper for the purpose of weighing the flour.
This consists in attaching to the angles of the hopper suitable suspension rods
or cords the free ends of which are connected to an ordinary spring balance, which
latter is suspended from a pulley overhead, by means of a flexible wire or cord
attached to a suitable screw jack.
This screw-jack is fixed on the side of the frame work which carries the hopper
and is operated by the attendant. Upon raising the hopper, its weight being
thrown on the spring balance, the weight of the flour in the hopper can readily
be ascertained.
The fourth part of my invention relates to the revolving brush used in the
chamber through which the flour passes in its transit from the hopper to the tilting
drum.
The brush is used for the purpose of separating and removing debris or foreign
matter from the flour, and as at present operated is usually in constant action,
not only during the time flour is passing through, but also while the weighing and
mixing operations are going on. In order therefore to bring the brush into action,
only when it is required, connect to the belt fork which operates the fast and
loose pulleys on the axle of the brush, a system of cords and springs, the cords
passing over certain pulleys and being connected to the above described screw-
jack. This system of cords and spring is so arranged that when the shutters of
the hopper are open the belt fork will be drawn over the fast pulley, thus auto-
matically bringing the brush into action and when the hopper is being raised
for the purpose of weighing, the belt fork is moved over the loose pulley thus
allowing the brush to come to rest.
Datel 1941 1
1000
improvements in and in connection with Dougn Mixing machines.
I, DENIS ROURKE, of The City Bakery, Store Street, Dublin, Ireland, Baker,
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 reference to improvements in dough mixing machines, and is
especially designed for that type of machine commercially known as the "Univer-
sal" Doughing Machine.

page_text: I will describe my said invention with the aid of the accompanying drawings,
in which,
Fig. 1 is a front elevation partly in section, illustrating the improvements con-
stituting my invention.
Fig. is a front elevation of portion of Fig. 1, showing my improved apparatus
in a different position.
Fig. 3 is a side elevation of the tilting" drum or mixing chamber, a front
view of which forms the lower part of Fig. 1.
..
tilting
The first part of my invention relates to this lower part, or
"drum as
indicated by the numeral 2, that is the chamber or receptacle in which the different
varieties of flour are received for mixing, and which is usually fed from a hopper 3,
through a flexible shoot 4, of canvas or other suitable material.
Upon the completion of the process of mixing, the drum is tilted forward towards
the attendant by suitable gear (not necessary for the purpose of this specification
to describe) and the mixed dough removed.
Hitherto this drum has been open, at the top, owing to the difficulty of arranging
a lid or cover which would not interfere with the introduction of the flour on the
one hand, or the tilting movement of the drum on the other hand, the result being
that portion of the flour escapes during its passage from the supply shoot, and
also during the process of mixing.
I propose to supply a lid or cover which will fulfill the required conditions with-
out in any way interefering with the operations of mixing or emptying of the drum.
This lid or cover is indicated by the numeral G.
It fits tightly over the drum, and is hinged to a ledge 7, fitted to the back edge,
so as to close and open towards the front."
The centre of the lid or cover is provided with an aperture to which the end
of the flexible shoot is permanently attached, while the front edge is provided with
a hook 8, which engages a chain or cord 9, suspended from the ceiling overhead.
The action of this lid or cover is as follows:
While the flour is being fed to the drum, the lid is firmly closed down and
prevents the escape of any flour.
On the completion of the process of mixing, the drum is gradually tilted forward
in the usual manner, whereupon the lid will open automatically and its open
edge be held in suspension so that when the drum is fully tilted forward the
opening will be completely exposed (the lid assuming the position indicated in
dotted lines Fig. 3) and the mixed dough may be removed as readily as though the
lid or cover were not present.
Upon restoring the drum to its normal position the lid or cover will automatically
close down on the drum, when the latter is ready to be charged again with the
varieties of flour to be mixed.
The second part of my invention, relates to the discharge orifice of the hopper.
This orifice is usually controlled by a slide plate which is inserted horizontally
through a slot and guides and closes or opens the orifice as required.
This arrangement is productive of waste, inasmuch as each time the plate is
drawn, particles of flour are drawn with it, and are blown about the bake house.
This defect I propose to remedy by substituting for the sliding plate, a pair of
failing shutters 10, hinged to the opposite edges of the orifice and opening in the
centre.
These shutters are operated by cords 11, attached to the usual weighing gear of
the hopper in such a manner that the shutters are held closed during the suspen-
sion and weighing of the hopper and are free to open when the hopper is lowered to
its resting position, the weight of the flour automatically effecting the opening.
The third part of my invention relates to an improved method of raising
the hopper for the purpose of raising the flour.
This consists in attaching the ends of the suspension cords 12, to an ordinary
spring balance 13, which latter is suspended by means of a flexible wire 14,
carried over the pulley 15, and secured to the device 16.

page_text: This device slides horizontally on the guide rods 17, and is operated by the
screw 18, whereby the hopper is raised to a condition of suspension, and being
thrown on the spring balance, the weight of the flour is readily ascertained.
The edges of the hopper slide vertically on slide rods as shown.
The fourth part of my invention relates to the revolving brush used in the
chamber through which the four passes in its transit from the hopper to the tilting
drum, the function of which is to separate and remove debris, or foreign matter
from the flour.
As at present used this brush is usually in constant action; that is it is in
action not only during the time flour is passing through the chamber, but also
while the weighing, and the mixing operations are going on.
In order therefore to bring the brush into action only when it is required, I
establish a connection between the sliding device 16, and the belt fork which
controlls the fast and loose pulleys on the brush spindle whereby the movement
of the sliding device controlis the movement of the brush.
This I accomplish by carrying a cord 19, from the device 16 down through the
floor to a pulley 20, thence horizontally to a pulley 21, and finally to a slide bar 22,
carried in guides 23.
While the hopper is in suspension (the shutters being closed) this cord
allows the slide bar 22, to be drawn to the right by the spiral spring 24, thus
bringing the fork 25, over the loose pulley 26, as shown in Fig. 1.
As thus conditioned the brush is at rest.
On the other hand when the hopper is not in suspension (the shutters being open)
the cord pulls the slide bar towards the left and over the fast pulley 27, thus
bringing the brush into action during the time that the flour is passing through
the brush chamber.
By this arrangement the brush is automatically brought into action, only when
required, and considerable saving in wear and tear is thereby effected.
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
1 claim is
First In dough mixing machinery, the use and application of a lid or cover in
connection with the tilting drum, arranged and operating in the manner and
for the purpose substantially as herein described and set forth in the accompanying
drawings.
Second In dough mixing machinery, the use and application of falling shutters
in connection with the hopper, arranged and operating in the manner and for
the purpose substantially as herein specified and illustrated in the accompanying
drawings.
Third: In dough mixing machinery, the method whereby the hopper is raised
into a position of suspension for the purpose of weighing as herein described and
illustrated in the accompanying drawings.
Fourth In dough mixing machinery, the method whereby the cleaning brush
is automatically actuated when required, substantially as herein described and set
forth in the accompanying drawings.
Fifth In dough. mixing machinery, the combination of apparatus constructed,
arranged and operating for the purpose and in the manner substantially as
described and illustrated in the accompanying drawings.
Dated this 17th day of January 1900
J. K. FAHIE & SON,
Agents for Applicant, 9, Westland Row, Dublin.