Improvements in Whisking or Mixing Machines.
Year: 1893

page_text: Date of Application, 4th Nov., 1893
Complete Specification Left, 4th Aug., 1894-Accepted, 8th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Whisking or Mixing Machines.
We, GEORGE SAMUEL BAKER and WILLIAM KING BAKER, Engineers, both
of 58 City Road, in the City of London, do hereby declare the nature of this
invention to be as follows:-
This invention relates to whisking or mixing machines and has for its object to
improve their construction and permit of the whisks being readily removed from
the machine and as readily replaced in position.
In a machine constructed according to this invention we provide three whisks or
mixing blades of preferably oblong form fitted one inside another and adapted to
rotate all on the same horizontal axis, the outside and inside whisks rotating in one
direction and the middle one in the opposite direction.
The pan in which the whisks rotate is supported on trunnions resting in suitable
bearings and through these trunnions pass the shafts which transmit rotary motion to
the whisks. The pan is capable of being turned on its trunnions so that it may be
emptied of its contents after the whisking operation is completed and is provided
with teeth or projections with which engages a spring controlled bolt or other
locking device for securing the pan in its operative position.
Each of the before mentioned shafts for operating the whisks is formed
preferably square at its inner end and is capable of being moved longitudinally.
The square end of one of the shafts is adapted to fit into and engage with a
correspondingly shaped recess in the outer part of the boss of the outside whisk
the inner part of said boss having secured in it (as by a transverse pin) one end of
a shaft which extends to near the opposite end of the pan and has the inside whisk
rigidly secured on it and one boss of the middle whisk rotating freely upon it.
One end of this last mentioned shaft abuts against the before described square end
fitting into the outer whisk and the other end terminates in the boss of the inside
whisk at the opposite end of the machine. The square end of the whisk rotating
shaft at this end engages with a square recess formed in the outer end of a short
shaft rotating freely in the bosses of the inside and outside whisks and having
secured on it the boss of the middle whisk.
The driving shaft of the machine is geared with one of the square-ended shafts
through a spur wheel and pinion only and with the other through a spur wheel
intermediate or idle wheel and pinion so as to rotate the inside and outside whisks
in one direction and the middle one in the opposite direction. The spur pinions
" so that
engage with the square ended shafts preferably by means of "feathers"
said shafts may be moved longitudinally and still remain in gear with the pinions
which are each prevented from moving laterally by being retained between an outer
bearing on the one side and on the other side the gland of a stuffing box provided
in the trunnion of the pan.
Each square-ended shaft at the part supported in the last mentioned outer bearing
is preferably of reduced diameter and is surrounded by a sleeve prevented from
moving longitudinally on the shaft by means of the shoulder on one side and a
collar on the other. The periphery of the sleeve is provided with a helical groove
which engages with a pin or stud secured in the bearing (or the reverse of this
arrangement may be provided) and each sleeve is provided with a head or wheel by
which it may be turned by hand.
When the sleeves are turned in one direction each draws its appropriate square-
ended shaft outwards and disengages the square end from the whisks which are
thereby free to be lifted out of the machine and when turned in the opposite

page_text: direction the square ends are moved inwards so that they may engage with the
before mentioned square recesses.
The before described apparatus may be modified without departing from the
spirit of the invention for example instead of using three whisks or mixing blades
as before described we may use more or less than that number and if desired we may
couple the two helically grooved sleeves together so that they may be simultaneously
operated and the square-ended shafts may be rotated by other means than the
gearing before mentioned. The inner ends of the whisk-rotating shafts and the
recesses for receiving them may be of other than square form.
Dated this 4th day of November 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicants.
Improvements in Whisking or Mixing Machines.
We, GEORGE SAMUEL BAKER and WILLIAM KING BAKER, Engineers, both
of 58 City Road, in the City of London, 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 relates to whisking or mixing machines and it has for its object to
improve their construction and permit of the whisks being readily removed from
the machine and as readily replaced in position.
The invention will be best understood by reference to the accompanying
drawings in which
Figure 1 is a sectional plan of the complete apparatus constructed according to
this invention,
Figure 2 being a sectional end view on the line 2-2 of Figure 1, and
Figure 3 an end view looking from the line 3-3 of Figure 1.
Figure 4 is a plan, and
Figure 5 a sectional end view of a modification,
Figure 6 being a sectional end view of a further modification.
Like letters represent like parts throughout the drawings.
In the form shown in Figures 1, 2, and 3, A represents the pan made of metal or
other suitable material carried upon trunnions A' in the framework of the machine,
the frame-work being of any suitable construction and design. By this means the
pan can be tilted for the purpose of emptying the contents, the locking-bar A²
pivotted upon the frame-work at A³ and having the projection or bolt A* engaging
with the lug A' (or preferably between two lugs) and pressed therein by the
spring A, serving to hold the pan in position. To release the pan for the purpose
of turning it the locking-bar A2 is withdrawn against the pressure of its spring Aº,
the bolt A being thus released from the lug or lugs A' when the pan is free to
turn upon its trunnions.
In this figure three concentric whisks B, C and D are shown; of these B and D
rotate in the same direction and at the same speed while C rotates in the opposite
direction preferably at a faster speed. The whisk B is carried upon the shaft B¹
suitably journalled in the frame and having a stuffing box B2 to make a tight joint
around the shaft; a portion of the shaft is squared at B³ fitting into a square recess
in B (or the two parts are otherwise arranged so as to turn together while being
capable of being separated) so that B revolves with the shaft B which terminates
at B' the boss D' of the whisk D being connected to the shaft B+ (extending
from B to B³) say by a pin D2, a similar boss D' and pin D at the other end of D
connecting that end also with the shaft B+ (whose end at B is connected to the
whisk B by the pin B' passing through B+ and the boss B10 of the whisk B) so that
both B and D are connected and driven by the shaft B'. The whisk Ú has its

page_text: boss C¹ resting loosely upon the shaft B' between the whisks B and D while at the
other end a second boss C2 is connected as by a pin C3 with a short shaft E
terminating in a head or cup E' having a square socket into which fits the square
end F of the short shaft F carried in suitable bearings in the frame-work and
provided with a stuffing box F2. Upon the shaft F is a spur pinion F³ in which the
shaft F can slide the pinion being carried round with the shaft by the feather F* or
by other suitable means. The spur pinion F³ is driven by the spur wheel F³ from
the shaft G which drives the whole apparatus receiving its power by belt and
pulleys or otherwise. Thus, it will be seen that the wheel F drives the pinion F³
the shaft F through its squared end F' turning the short shaft E which carries one
end of the whisk C and drives it while the shaft B₁ carries and drives the two
whisks B and D in the opposite direction to the whisk C. The shaft B is driven
by the spur piniou H with which gears a similar pinion or idle wheel H' driven in
its turn by the spur wheel H³ carried by the shaft G, the object of the idle wheel H¹
being to reverse the motion of the shaft B₁ and thus cause the whisks B and D to
revolve in the opposite direction to that of the whisk C-other gearing however
may be employed for this purpose.
It will be seen that if the square F¹ of the shaft F and the square B³ of the
shaft B be withdrawn from their respective sockets the whole of the three whisk
can be lifted out of the pan for cleaning, giving access to the pan, or for other
purposes; this is effected in the following manner. The shaft B is free to slide in
the spur pinion H being carried round therewith by the feather B5 the sliding
movement being imparted by the sleeve I carried upon the reduced portion Be of
the shaft B and retained by the collar B' upon the end of the shaft B. The
sleeve I has formed in its outer periphery or surface a spiral or similar groove I'
with which engages a stud or projection J fixed in the frame-work of the machine ;
the sleeve has a hand wheel 12 or equivalent device by which it can be turned and
it will be readily seen that when the sleeve is turned the fixed stud J engaging in
the spiral groove l' causes the sleeve as it revolves to travel inwards or outwards
according to the direction in which it is revolved, taking with it the shaft B' and
either withdrawing it from the squared socket in the whisk B or replacing it in
that socket. The shaft F at the other end of the machine is operated by
similar means, and in a similar manner so that the whisks can be easily removed
and replaced.
The positions of the groove I' and stud J can be reversed, the projection being
upon the sleeve and the recess in the frame-work or bearing or an ordinary or special
screw thread can be employed. If desired we may couple the two grooved sleeves
together so that they may be simultaneously operated.
In the modification shown in Figure 4 the same arrangements for withdrawing
the axles at one end of the machine by means of the helical sleeve stud and hand
wheel are adopted, but as in this case only one whisk is carried upon each shaft the
whisks lying in separate vertical planes the whisks are carried at their other ends
upon screwed studs or centres K Figure 4 screwing into bosses A° and A10 upon
the outside of the pan A; these studs may be operated by hand wheels K' upon
their outer ends the object in both cases being the same viz. to withdraw the
supporting shafts so as to allow of the whisks being withdrawn.
In the arrange-
ment shown in Figures 4 and 5, the whisks are carried in the same horizontal plane
but in separate vertical planes and are driven by gearing at the same speed but are
set with their working faces at right angles to each other so that when one whisk
lies horizontally the other lies vertically and they are thus prevented from touching
or interfering with each other. The gearing by which this is accomplished is
substantially the same as that shown in Figures 1 and 2 excepting that the two
spur pinions H and H' lie in the same horizontal plane; they are driven by the
spur wheel H2 as previously described, and the whisks revolved in opposite
directions-the arrangement of the gearing is clearly shown in Figure 7.
pan A may be tilted as before around the axis B₁ the bearings of the second
whisk in Figure 4 being carried by the pan so that it can be lifted with the pan
The

page_text: when the latter is tilted in the direction of the arrow A' Figure 5, for the purpose
of emptying the contents, the axle L of Figure 5 moving in a circular arc about
the centre B¹.
Figure 6 is in most respects the same as Figures 4 and 5, but each whisk
instead of projecting upon both sides of its axle projects upon one side only, their
proper relative positions being ensured by gearing similar to that employed in
Figure 1, and the pan tilting as described with reference to Figure 5. The
end view Figure 7 shows the arrangement of the gearing adopted in Figures 4,
.5 and 6.
The locking of the pan A is accomplished in the manner already described with
reference to Figure 1 but for convenience a spring-controlled sliding locking bolt M
carried on the frame-work of the machine is employed through an opening M' in
which the locking bar A2 passes. The point M² of the bolt M engages with a
projection A upon the boss A" of the pan A. The operation of the locking device
is the same as that already described in reference to Figures 1 and 2.
.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a whisking or mixing machine the combination in the same axial line
of three whisks or beaters such as B C D B and D moving together in one
direction and C moving independently in the opposite direction and the whole
removably supported substantially as described and illustrated in Figure 1 of the
accompanying drawings.
2. In a whisking or mixing machine the combination of three whisks or beaters
such as B C D shafts B₁ B3 B+ E E' and F F' substantially as described and
illustrated in Figure 1 of the accompanying drawings.
3. In a whisking or mixing machine the employment of a sliding shaft such
as B B sleeve such as I I¹ and fixed projection or stud such as J substantially
as and for the purpose described and illustrated in Figure 1 of the accompanying
drawings.
4. The combination and arrangement of parts constituting the complete whisking
or mixing machine substantially as described and illustrated in Figures 1 and 2 of
the accompanying drawings.
5. The combination and arrangement of parts constituting the complete whisking
or mixing machine substantially as described and illustrated in Figure 4 of the
.accompanying drawings.
Dated this 4th day of August 1894.
GEORGE SAMUEL BAKER.
WILLIAM KING BAKER.