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Патент USA US2109614

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March 1, 1938.
r
w_ R DEHUFF
2,109,614
MIXING MACHINE BEATER
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Filed April 11, 1936
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INVEN'I? ,
BY
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ATTORNEY
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1 March 1,
w_ F_ DEHUFF
2,109,614
MIXING MACHINE BEATER
Filed Ap '1 11, 1955
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INVENTOR
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ATTORNEY
Patented Mar. 1, 1938
2,109,614
UNITED STATES
PATENT OFFICE
2,109,614
MIXING MACHINE BEATER
Walter F. Dehuff, Glen Rock, Pa., assignor to
American Machine & Foundry Company, a cor
poration of New Jersey
Application April 11, 1936, Serial No. 73,853
16 Claims. (Cl. 25—129)
’ This invention relates to machines for mixing
dough, and more particularly to the beaters of
such machines. This application constitutes a
continuation in part of my prior application,
5 Serial No. 749,302, ?led October 20, 1934, which
has matured into Patent No. 2,037,068 granted
April 4, 1936.
In conventional beaters heretofore in use it
has been found that the arms leading from the
outer edge of the beater to the center hub, re
volving at the necessary speed for the type of
batch on which this type of beater is required,
prevent the material from dropping back, due
to the speed of these arms, thus causing the top
15 portion of the batch to be somewhat held in sus
pension, thereby preventing that portion of the
batch from working down into the rest of the
batch to a marked degree. This, of necessity,
results in a more or less unsatisfactory and slow
20 er mix.
I have found however, that by constructing the
beaters with a drop center and eliminating the
standard heavy bar sloping downward from the
beater shank as in previous beaters, which had
25 the tendency to trap the material at the center
of the batch and keep it ?owing on the top of
the batch being mixed, the material as it be
comes lighter and rises towards the top, is direct—
ed downward by the improved drop center struc
30 ture, and is permitted to fold over, and down
into the batch. This effects a more thorough
mix of the batch because of the additional agi
tation, and hence it has a more complete develop
ment and incorporation of materials from top
35 to bottom of the batch. The drop center con
struction also eliminates practically all tendency
of the material to splash, or be thrown off 'the
heater and permits the batch to be handled with
a degree of efficiency hitherto unknown in the
40 art.
In some instances, I have found that certain
materials are more dif?cult to incorporate due to
differences in their speci?c gravity, or when dry
materials ?oat on liquids.
To eifect a rapid as
45 sociation of such mixes the drop center beaters
the points of the drop center wings A and B (see
Fig. 1). Beaters of this type are generally used
when they are to be revolved at relatively low
speeds to incorporate the ingredients rapidly.
The effect of the inner drop center or spur is to
give added downward directive impulse to parts
of the batch tending to rise as the beater revolves.
The main object of the invention is to‘ secure
a more thorough mixing of the dough, or mix,
and for this purpose there is provided a beater 10
head having a drop center construction of gen
erally heart shaped section, the driving shank
being joined to the re-entrant portion of the
heart.
It is a further object to provide beaters of drop 15
center construction with inner drop center por
tions, or spurs or extensions in order to more
thoroughly and rapidly mix certain types of
batches, wherein said portions aid in the down
ward direction and agitation of said batch.
It is an additional object to provide a multi
ple winged beater with an inner drop center por-'
tion which will effect a more thorough, efficient
and rapid mix,
It is an added object to provide the operative 5
faces of beaters with such a con?guration that
the heater in operation will be self cleaning, that
is, the rotation of the beater will cause parts of
the batch tending to adhere thereto to be re
moved by the rotation of the beater, without the 30
assistance of additional cleaning means.
With these and other objects not speci?cally
mentioned in view, the invention consists in cer
tain constructions and combinations hereinafter
fully described, and then speci?cally set forth 35
in the claims appended hereunto.
In the accompanying drawings which form a
part of this speci?cation and in which like char
acters of‘ reference indicate the same or like
parts:
Fig. 1 is a side elevation of the improved beat
er used for heavy batches;
40
Fig. 2 is a sectional plan view taken on line
2—2 of the beater shown in Fig. 1; the arrows at
the end of the line indicating the direction in 45
have been provided, according to the present in
which the view is taken;
vention, with an inner drop center portion or
spur which is either formed integral with the
particular beater or affixed thereto. These de—
beater used for lighter mixes; and
Fig. 3 is a side elevation of a multiple win
I
Fig. 4 is a plan view of parts broken away of
50 vices assist materially in the assimilation of dry ~ the structure shown in Fig. 3.
materials and hasten the mixing process. The
In carrying the invention into effect there is
hastening of the mixing process is particularly provided a driving shank and a generally heart
noticeable on some batches more than others,
shaped beater head supported with its obtuse
and is readily discernible on all batches of such end downward and adapted to create a circula
55 capacity that level off the batch up to or above tion of the mix down through the center of the _ 55
2
2,109,614.
head when the same is rotated in the mix.
In
tions A’ and B’ as illustrated in Fig. 3, and cause
the mix to ?ow up the outside and down the
and outwardly inclined bars on the shank, a cen
tral web forming drop center continuation of
center of the beater producing rapid circulation
and thorough development. Flour and other in
the shank, two or more sets of curved members
or blades joining the bars and web and spurs
gredients added to the mix are assimilated almost
instantly. By means of the inner drop center
or inner drop center members spaced above and
substantially parallel to said inclined bars ex
10 tending from said shank and connected at their
ends to said bars; or the beater head may in
clude a number of radial arms on the driving
shank, a series of generally heart shaped mem
bers secured to the arms with double drop cen
15 ter portions in their upper parts, and wire whips
having their ends ?xed in the frames.
These various means and parts may be widely
varied in construction within the scope of'the
claims, for the particular devices selected to il
20 lustrate the invention are merely illustrative of
the many possible concrete ‘embodiments of the
same. The invention, therefore, is not to be re
stricted to the speci?c constructions shown and
~
25
30
portion having wings B’ any materials rising
above the level of wings A’ are immediately
tucked in, and folded or redirected down the cen 10
ter of the beater. Reinforcing bars l9 are pro
vided for the upper portions of each frame.
Frames I'I are equipped with a series of wire
' whip members 20 which have their ends securely
fastened therein. A central rod 2! set in the 15
lower end of shank l5 forms a drop center con-'
tinuation thereof. Referring again to Fig. 3, it
will be seen that only the frame I8 and wires 20
of one wing set is shown inasmuch as it would
result in a confusion of lines if the wires of the 20
remaining wings were illustrated.
"
What is claimed is:
1. In a beater, the combination with a driving
shank providing means for rotating said beater
described.
.The beater illustrated in Figs. 1 and 2 is used
in a mix, of a beater head of generally heart
mostly for creaming, mixing and folding-in ?our
in batches of all kinds. Referring to Figs. 1 and
shape con?guration having a drop ‘center portion
in its top part supported by said shank with its
end pointing downward, an inner drop center
unit spaced above said drop center and secured
to said shank, and a plurality of separated mix
ing members extending between said top part
2, the beater consists of a driving shank [0 which
is adapted to be connected to the driving spindle
of the mixing machine, and a beater head of
generally heart shaped section integral with or
attached to said shank. In the embodiment
shown in Figs. 1 and 2, the beater head consists
~ of two upwardly inclined top bars ll extending
35
and 23, which extend out and form wing por
the best constructions contemplated, the beater
head may include a pair of opposite upwardly
from driving shank l0 and connected by one or
more spaced inner curved members l2 and outer
curved members l3, all of which may be concen
trio, as shown, with a central web M which forms
a drop center continuation of shank ID. Spaced
above bars I l and extending upward substantially
parallel thereto are short bars H a which are
connected at their ends by bars l5 attached to
or integral with bars ll, thereby forming an
upper drop center unit having a wing portion B
45 which corresponds to wing portions A of the
main part of the beater, the highest points of
which constitutes the beginning of the drop cen
ters in the top of each beater head.
Referring particularly to Fig. 2, it will be noted
50 that the cross section of each of the members l2
and I3 presents a broad curved point to the mix
which tapers off at the rear thereof. This shape
which may approximate a tear drop causes more
e?icient agitation of the mix and makes the
55 blades of the beater self cleaning, so that at all
times there is no collecting of the ingredients of
the mix thereon during use ornecessity for scrap
ing or otherwise removing portions of the mix
therefrom after use. It will be noted that the
60 blades on opposite sides of web “I face in oppo
site directions, so as always to present the broad
face ?rst to the mix as the beater rotates.
In Figs. 3 and ll there is shown a modi?ed form
of the invention specially adapted for light mixes,
65 such for instance as sponge batches, heavy icings
and the like.
The beater shown in this ?gure
25
and end for agitating a mix when said beater is
allowed to rotate therein.
'
2. In a beater, the combination with a driving
shank providing means for rotating said beater in 35
a mix, of a beater head of generally heart shape
con?guration, having an obtuse end and a drop
center portion across its top part acting to direct
portions of the mix downward into circulation in
said mix, an inner drop center unit integral with 40
the top part of said beater secured to said shank,
for directing downward into the mix any portions
thereof rising above said'drop center, and a plu
rality of mixing members carried by said head for
agitating a mix when said beater is allowed to 45
rotate therein.
3. In a beater, the combination with’ a driving
shank providing means for rotating said beater
in a mix, of a beater head of generally heart
shape con?guration, having an obtuse end por
tion pointing downward, and a drop center por
tion across its top part acting to direct portions
of the mix downward into circulation with the
mix, an inner drop center unit supported on the
top part of said beater head and secured to said 55
shank for directing back into the mix any parts
thereof rising above said drop center, and a plu
rality of mixing members carried by said head for
agitating said mix when said beater is allowed to
60
rotate therein.
4. In a beater, the combination with a driving
shank provided with means for rotating a beater
in a mix, of a beater head having an outer mem
ber of generally heart shape con?guration, and
a drop center depression in the top portion there 65
of supported by said shank at the lowest point
comprises a multiple wing unit, and though
of said depression, the sides of the beater ex
shown with six wings, it can be modi?ed to any
number of wings, as conditions require. In this
beater there is provided a driving shank l8 from
which extend a number of upwardly inclined
radial U-shaped arms I‘! supporting the ends of
tending upward from said drop center depres
sion, and then downward to form an obtuse end,
and a plurality of concentric agitating devices 70
a series of generally heart-shaped frames l8,
each frame being provided with-a plurality of
75 drop center portions designated'generally at 22
forming parts of said ‘head, and having their
ends secured to said member only and on oppo
‘site sides of its vertical center‘ line for agitating
said mix when said beater is allowed to rotate
therein.
2,109,614
5. In a beater, the combination with a driving
shank provided with means for rotating a beater
in a mix, of a beater head having a plurality of
members of generally heart shape con?guration,
with each member provided with a drop center
depression in the top portion thereof supported by
said shank at the lowest point of said depression,
the sides of the beater members extending up
ward from said support, and then downward to
form obtuse ends all converging at the same point,
and aplurality of concentric agitating devices
forming parts of said head, and having their ends
secured to said members and on opposite sides
of the vertical axis of each member for agitating
15 a mix when said beater is allowed to rotate
therein.
6. In a beater, the combination with a shank
provided with means for rotating a beater in a
mix, of a composite beater comprising a plurality
20 of members of generally heart shape con?gura
tion and having drop center depressions in the
top portion of each member, said members ex
tending upward from said drop center depres
sions, and extending downward to form obtuse
25 ends, all of said members being secured together
at the top and ends, and supported by said shank
at the lowest point of said depression, and a plu
rality of concentric agitating members having
their ends attached to said members only, and on
30 opposite sides of the vertical axis of said beater,
for agitating a mix when said beater is allowed
to rotate therein.
7. In a beater, the combination with a shank
provided with means for rotating 2. beater in a
35 mix, of a composite beater comprising a plurality
of members of generally heart shape con?gura
tion and having a plurality of drop center de
pressions in the top portion of each member for
directing and redirecting the mix downward to~
wards the center of said beater, said members
extending upward from said drop center, and
extending downward to form obtuse ends, all of
said members being secured together at the top
and ends, and supported by said shank at the
45 lowest point of said depression, and a plurality
of concentric agitating members having their
ends attached to said members only, and on
opposite sides of the vertical axis of said beater,
for agitating a mix when said beater is allowed
to rotate therein.
8. In a beater, the combination with a driving
shank providing means for rotating said beater
in a mix, of a beater head having a drop center
depression across its widest part, supported by
said shank with its nose portion pointed down
ward, a plurality of separated mixing members
extending between said drop center and said nose
portions, and a second drop center member at
tached to the upper portion of said beater and
60 to said shank.
9. In a beater, the combination with a driving
shank providing means for rotating said beater
in a mix, of a beater head, comprising an outer
member of generally heart shape con?guration
~ with a drop center depression in the top portion
thereof supported by said shank, a plurality of
mixing elements carried by said member, and
means supported by the upper portion of said
member adjacent the drop center portion thereof
and attached to said shank for directing those
portions of the mix rising above said member
downward into said mix to be circulated there
with.
10. In a beater, the combination with a driving
75 shank, of a heart shape beater head supported
3
thereon with its obtuse end pointed downward,
said beater head including a pair of opposite
upwardly inclined bars on said shank, a central
web forming a drop center continuation of said
shank, and adapted to produce cavitation in and
thereby create a circulation of the mix from the
outside of the beater head down through the
center of the head when the same is rotated in
the mix, a plurality of sets of spaced, concentric
members joining said bars and webs, to assure 10
effective agitation of said mix, and means mount- .
ed on said bars and secured to said shank above
said bars for downwardly directing into the cir
culating mix any material rising above said bars.
11. In a beater, the combination with a driving
shank providing means for rotating a beater in
a mix, of a beater of generally heart shape con
?guration, comprising a pair of opposite upward
ly inclined bars extending from said shank, a
central .web forming a drop center continuation 20
of said shank, a plurality of spaced concentric
members joining said bars and web to assure the
effective agitation of said mix, a pair of up
wardly inclined elements extending from said
shank and. spaced above said bars, and means 25
connecting said elements to said inclined bars,
and thereby forming an inner drop center unit
on said beater for redirecting portions of the mix
rising above said bars downward and into cir
culation with the mix being agitated.
30
12. A beater rotor including a shaft and a
blade extending therefrom and revoluble there
with broadside through the mix, said blade hav
ing a plurality of stirring elements extending side
by side transversely of their orbital path with
intervening arcuate slots, said stirring elements 35
being connected and said slots being closed, at
their respective upper ends, by a drop center ele
ment, the stirring elements extending downward
from said drop center in arcuate formation re
spectively to an axially disposed element, with 40
which the stirring elements are connected at
spaced points along the axis; said stirring ele
ments respectively having a cross section gen
erally of tear-drop shape constructed with 45
ing edge and arranged to agitate the ingredients
tapered trailing edges and a blunt rounded lead
of a mix as the beater is rotated therein blunt
edges foremost; whereby the mix is squeezed
into the spaces between said blunt leading edges
recurrently, and alternately expands in the spaces 50
de?ned by said tapered trailing edges forming
admixed streams which cohere as they leave the
trailing V-shaped ends of the elements so that a
freshly coherent mass of the mix is presented for
like dividing, squeezing and cohering action at 55
each pass of a blade so constituted.
13. In a beater, a rotor having a vertical axis,
and including several blades each having the
features claimed in claim 12, said blades being 60
disposed in spaced radial positions around said
axis, whereby said mix is subjected, during each
rotation of said rotor, to a multiplicity of divid
ing and squeezing operations, with intervening
recoherence of the divided streams.
14. A beater blade having the features claimed 65
in claim 12, in which each stirring element has
its blunt rounded leading edge and its tapered
trailing end formed substantially in the propor
tions illustrated, thereby promoting a self-clean
70
ing action of said elements.
15. A beater device adapted to operate in a
plastic mix of the class described: said beater
comprising a shaft disposed suitably to enter said
mix from above the surface level thereof and to
75
4
2,109,614
rotate therein, and a beater member having up
per and lower drop center elements adapted to
act in succession in the order named to lay cir
cumjacent portions of said mix progressively
5 into the path of normal downward vortex prop
agation along the axis of rotation of said beater,
whereby said mix is cleared from the beater dur
ing the mixing operation.
16. A beater having the features claimed in
claim 15 in which said‘ drop center elements have
their upper margins extended downwardly and
inwardly to a point of connection with said shaft,
and ‘in which said beater element is continued
below the terminus of said shaft as a generally
planiform foraminous stirring structure of sub
stantially heart-shaped contour extending in a
plane intersecting the axis of said shaft, in par
allelism therewith, said extended portion acting
to impart to the material so cleared from above,
a moment of centrifugal force adequate to feed
it into the path of the foraminous stirring por
10
tion of the beater.
.
WALTER F. DEHUFF.
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