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Патент USA US2406535

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Aug. 27, 1946.
'
D. s. FooTE
-
MIXING
i 2,406,535
MACHINE
2 sheets-sheet `1‘
VFiled June 14, 1944
Q
‘n
BY
INVENToR
oon/Am s mons-`
`
Arron/ver:
Aug. l27, 1946.
l
D. s. FOOTE
MIXING MACHINE
'
¿406,535
'
lFiled June 14, 1944
`
2 4sheets-_sheet 2
ÍNVEN TOR.
DONA/_o „s Foorf
Patented Aug. 27, 11946
¿2,406,535 _
UNITED STATES PATENT OFFICE
NIIXING MACHINE
`
»Donald S. Foote, Kansas City, vMo.,y assignor to
Remington Arms Company, Inc., Bridgeport,
Conn., a corporation of Delaware
f Application June 14, 1944,»SerialNo.`540,'21‘-6
4 Claims. (Cl. 259-72)
,
l
2
1
The -present invention -relates 'to a mixing ap
Fig. 3 is a .sectional plan view, taken along the
line 3--3 of Fig. 1, the receptacle being removed.
Fig. 4 is a vertical sectional view, taken `along
the line ïl-Ll of Fig. 1, and showing the mixing
elements in a relatively moved position from that
illustrated in Fig. '1, the long dot-and-dash lines
paratus, particularly for mixing .several ingredi
ents, and wherein such ingredients, usually .in
pulverulent form, .are of different specific grav
ities and in widely different proportions. While
the apparatus may be used for the mixing of -var
ious substances, it is especially adapted for the
and the short dot-and-dash llines respectively Y
showing further relatively moved positions,
,
mixing of an explosive mixture suchas an ammu
nition primerrmixture. Such primer mixtures us
ually include a burning substance, a binding sub
stance, and a highly explosive fulminating sub
stance, the latter usually vbeing a Verysmall per
centage of the entire mixture. The ingredients
arepreferably mixed in a wet state, and in this
Figs. 5 to 8 are :diagrammatical views showing
several successive positionsof `the mixing ele
ments relative to the receptacle, the latter being
shown Ain horizontal section.
~
.
Similar ; reference characters vindicate corre
case it is Vessential that the mass of ingredients
be thoroughly blended by a kneading action. Be
cause of the dangerous character of the material,
it is the usual practice to mix the ingredients.
in a suitably barricaded structure by remote con
trol, the usual type of mechanical mixer compris 20
ing agitator or mixing elements movable in the
mixing receptacle in direct contact with the con
tents, a procedure involving considerable. danger
sponding parts throughout the severalñgures of
the drawings.
Referring to the drawings, the mixing .appa- l
ratus, according to the illustrated exemplary em
bodiment of the invention, >comprises >a frame
consisting of a raised platform base I0, a pair
of vertical standards 'II-II, and a .horizontal
top plate I2 mounted upon the upper ends of the
standards. The top plate is provided .centrally
from exposion, as well as inconvenience and haz
with a circular opening I3 in which is engaged
the mixing receptacle I4 in the form of an _im
ard in removing the mixture and vcleaning the
perforate ilexible bowl, lpreferably formed of rub
apparatus.
ber or thev like, and of substantially :concidal
shape. At its upper wide `end vthe bowl Yis ¿pro
mixing apparatus wherein the ingredients of the
vided with a projecting rim .I5 `having embedded
mixture are placed in an imperforate `flexible re-'
in it a stiil‘ening ring I6, which provides a re
ceptacle, and wherein external agitating elements . 30 silient flange, adapted to seat'upcn the upper yside
YIt is an object of the ‘invention to provide a
having reciprocal and rubbing movements coop
erate with the receptacle to impart a kneading
action to the contents to thoroughly mix and
blend them.
A further object is to provide -an apparatus
wherein the mixing receptacle is removably
mounted inthe apparatus, so that it may serve as
the portable container for handling the completed
of the table I2, as well as ameans for maintain
ing the circular form of the bowl while it is being
handled. The bowl is retained in the opening
I3 by means of a rectangularclamping plate I1.,
provided centrally ywith a circular opening I8 in
register with the opening I3, and hingedly mount
ed on the‘ plate I2 by means of a hinge-connec
i tion I9 at one edge. At its opposite edge the plate
mixture as it is carried from the mixing appara
is provided with slotted lugs ‘20 ’adapted vtolse
tus to its point of use, it being proposed to provide 40 engaged by hingedly mounted clamping screws 2l,
a number of interchangeable receptacles, so that
provided with wing nuts «22 iwhich upon being
as soon as one is removed to be used asa handling
tightened securely clamp the 'rim I5 of the bowl
container, another containing a new charge of
between the table and the clamping plate. The
ingredients may be placed within the apparatus.
bowl hangs below the table I.2 where it is adapted
With the above and other objects in View, an 45 to belexternally engaged by the'mixing elements,
embodiment ofthe inventionk is shown in the ac
presently to be more fully described.
companying drawings, and this embodiment will
In each of the standards I‘I there is provided a
be >hereinafter more fully described with refer
vertical slot ‘23 in which-are engaged the end arm
ence thereto, and the invention -will be finally
pointed out in the claims.
In the drawings:
`
portions of a vertically slidable _crosshead _24,
50 these arm portions being shouldered, vas -at‘-25, to
i
Fig, 1 is a front elevation of a mixing appa
ratus, according to the illustrated exemplary em
bodiment of the invention.
Fig. 2’is an end elevation.
engage at the inner sides of the standards yto re
tainfthe crosshead against 4longitudinal displace
ment. Centrally of the crosshead there is pro
vided a shaft portion 26upon-which is rotatably
55 engaged a block >member 21 provided'at itsupper
2,406,535
4 ,
3
position the vertically movable plunger 28 en
Side with an upwardly projecting plunger element
gages the lower end of the bowl, pressing it up
28. To one side of the block 21 there is secured
a lever arm 29 projecting downwardly and for
wardly therefrom and provided with a cam roller
wardly to a slight extent so that the rearward -
portion of the bowl extends downwardly’ behind
3B riding upon a cam 3| secured upon a horizon 5 the end of the plunger while the forward por
tion extends upwardly in front of it. The rear
tal cam shaft 32 journaled in the standards ||.
wardly converging inclined faces 43 of the pusher
` The roller 33 is yieldably heldin engagement with
elements 39 compress the sides of the bowl to an
the cam' by a- spring 33 connected between the end
increased extent toward the rear, so that it pro
of the lever 29 and the base l5. This cam is de-`
signed to impart swinging movement to the 10 .jects rearwardly to a slightly greater extent than
plunger 28, coincidentally with raising and low- ~ . forwardly, and as shown diagrammatically in
Fig. 5. The `crosshead 24 is moved upwardly by
ering movement imparted to it by the vertical
means of the eccentric drive elements 34, and at
sliding movement of the crosshead. For this lat
ter purpose eccentric drive elements are )providedr ` »Y the same time the camV 3| rotates to the point
upon the cam shaft 32 outwardly of the standè l5 shown in Fig. 4 where the roller 36 is at the end
of ’the concentric portion 3|a of the cam 3| and
’
'g
is
aboutv to be engaged bythe projectingrise SIb j
secured to the shaft and engaged by the ,circular
Y ards I I, each consisting oían eccentric sheave 34 '
strap end 35 at the lower end of a connecting arm>
36, the upper ends of the connecting arms at eachY
thereof.
.
As the .crosshead risessimultaneously with the'
side being pivotally connected tothe ends of the 20 riding of the roller 33 over the concentric portion» _
of the cam a forward swinging movement is im-_
' crosshead projecting through the slots 23. '
parted to the plunger 28, bringing it lfrom the
slightly rearwardly inclined position shown inV
The plunger 28 is disposed in the central ver
tical plane of the bowl i9 in such arrangement
that in its lowered position it engages the lower
end of the bowl, slightly indenting it. Upon a 25
Fig. 2 to the forwardly inclined position shown
in Figs..4 and 6. Simultaneously with the rais
ing Vof the crosshead, the cams 5| are rotated to
points where the slide rods 31 carrying the pusher
elements 39 are moved inwardly, the right hand
cam 5| being preferably arranged as shown in ad
horizontal axis extending longitudinally through
the lower portion of the bowl at a point inter
mediate the lowered andraised positions of the
plunger 28 there are provided at opposed sides of
the bowl reciprocating slide rods 31, each mount 30 vance of the left hand cam, so that the right hand
pusher element is moved inwardly in advance of
ed in bearing bushings 38 provided in the stand
the inward movement of the left hand pusher ele
ards I|. Carried upon the inner end of each of
ment, as shown in Fig. 6. v'The inward movement
these slide rods is a vbowl engaging «pusher element
39, provided with a mortise projection 40 engaged
of the right hand pusher element- is vcompleted
gaging face 43, and is tilted downwardly to dispose
, cam 3| the plunger 28 is swung rearwardly to the
in a transverse slot 4| in the end of the rod and 35 substantially at the same time that the plunger
28 reaches its upper'forwardly swung position.` -'
' secured thereto by a pin 42. Each of the pusher
As the roller 33 rides upon the rise 3|b ofthe
elements is provided with a rectangular bowl en
position shown in Fig. 7, and by the longdot-and--
the bowl engaging face in a downwardly and
rearwardly inclined direction. ' The bowl engaging 40 dash lines _in Fig. 4. ' During this movement the
right `hand pusher element remains in its in-V
wardly moved position and at the same time the
face is also inclined inwardly toward the rear.
This arrangement of the bowl engaging faces pro
left hand pusher element completes its inward
movement, with the resultV that the ingredients
vides a downwardly and rearwardly inclined con
verging passage for cooperation withthe vertical
ly moving and swinging plunger 28, as will here
45 in the bowl are given a differential kneading ac
tion at each side of the plunger 28 through its
passage between the primarily inwardly moved
inafter more fully appear.
Horizontal reciprocation is imparted to the
4rods 31 by means of rock levers 44-44 pivotally
right Ahand pusher element, and the secondarily
inwardly moved left hand pusher element, their
spective standards ||---| |, these brackets having 50 opposed converging faces causing the mixture to
be gradually squeezed-with increasing force as
clearance openings 46 therein through which the
the plunger swings rearwardly, and this squeez
ends of the crosshead 24 are adapted to move dur
ing action being started at'the right hand side
ing its vertical reciprocation. The upper end of
slightly in advance of the left hand side.
each of the rock levers 44 is engaged in a slot
As the roller 35 leaves the rise 3| Vand rides over
41 in the end of Veach of the rods 31, and is piv 55
the steep decline surface 3|“, the crosshead 24 is
otally connected thereto by means of a pin 48 en
quickly moved downwardly to a point slightly
gaged in a slot 49 inthe end of the lever. Upon
above its lowermost position, causing the plunger
the lower end of each rock lever there is provided
28 to swing forwardly to the position shown in
a cam engaging roller 58, riding upon a cam 5|
secured upon the end of the cam shaft 32, y»the 60 Fig. 8, and by the short dot-and-dash lines in
Fig. 4, this action taking placev while the pusher
roller being held in engagement with the cam
elements move outwardly, the right hand pusher
surface by a spring 52 connected between th
element moving outwardly slightly in advance of
rock lever and the bracket 45.
*i
mounted upon brackets 45-45 secured to the re
the left hand pusher element, so that there is a
Rotation is imparted to the cam shaft by means
of a worm'gear 53 and pinion 54, the latter being 65 differential squeezing action at each side of the
plunger 28 during this movement. Thereupon the
carried by a shaft 55 mounted in brackets 56 se
cured to the inner side of one of the standards
I|. This shaft is driven by any suitable means,
preferably a motor located at a remote point.`
The operation is as follows: -
Y
roller 36 rides upwardly upon the sharp rise-por
tion 3|-d of the cam y3|'to its starting position,
this action taking place during the terminal por
70 tion of the downward movement of the cross
In the lowered position of the crosshead 24, as
illustrated in Figs. 41 and 2, the horizontally re
ciprocating pusher elements 39 are in their out
wardly moved positions with their face surfaces
43 engaged at opposed sides of the bowl, _In this 75
head and causing the plunger 28 to swing from
the position shown by the. short dot-and-dash
lines in Fig. 4 tothe slightly rearwardly inclined
starting position shown in Fig. 2.
Y
Y
>Í
The form of the invention illustrated in the
2,406,535
5
3. In a mixing apparatus, a support, a ñexible
drawings and described herein is typical and il
lustrative only, and it is evident that the inven
tion is capable of embodiments in other forms,
all falling within the scope of the appended
claims, which are to be broadly construed.
What is claimed is:
Vmixing receptacle supported therein and disposed
in a substantially vertical hanging position, a
vertically reciprocating cross‘nead, a plunger ele
ment pivotally carried thereby for swinging
movement coincidentally with its vertical re
ciprocating movement and arranged to engage
the lower end of said receptacle exteriorly, and
mixing receptacle suppcrted'therein, a recipro
cating mixing element arranged to engage the end ‘ a pair of horizontally reciprocating pusher ele
of said receptacle exteriorly, reciprocating mix 10 ments arranged to engage opposed sides of said
receptacle exteriorly, said pusher elements hav
ing elements arranged to engage opposed sides of
ing convergent and inclined receptacle engaging
said receptacle exteriorly, a reciprocating cross
faces providing a contracting and expanding
head on which said end engaging mixing element
transverse passage through which said plunger
is pivotally mounted for swinging movement, and
cam means for imparting swinging movement to 15 element is adapted to have reciprocal and swing
ing movement, and mcansfor imparting recipro
said end engaging mixing elementI coinciden
cating movement to said pusher elements one in
tally with its reciprocating movement, said side
advance
of the’other, whereby the contents of
engaging mixing elements providing a contract
said receptacle are squeezed between the hori
ing and expanding transverse passage through
l. In a mixing apparatus, a support, a ñexible
aontally pressed sides and the vertically Ypressed
which said end engaging mixing element is 20 end of said receptaclewith a kneading action.
adapted to have reciprocal and swinging move
4, in a mixing apparatus, a support, a ñexible
ment, and whereby the contents of said recepta
mixing receptacle supported therein and dis
cle are squeezed between the pressed sides and ,
the pressed end of said receptacle with a knead
ing action.
2. In a mixing apparatus, a support, a flexible
posed in a substantially vertical hanging posi
25 tion, a main shaft, a vertically reciprocable cross
head, cam means on said shaftl to reciprocate said
crosshead, a plunger element pivotally carried by
said crosshead for swinging movement coinciden
posed in a substantially vertical hanging position,
tally with its vertical reciprocating movement
a vertically reciprocating plunger element ar 30 and arranged to engage the lower end of said re
ranged to engage the lower end of said recepta
ceptacle exteriorly, a cam on said main shaft for
cle exteriorly, horizontally reciprocating pusher
swinging said plunger, a pair of horizontally re
elements arranged to engage opposedsides of said
ciprocating pusher elements arranged to engage
mixing receptacle supported therein and dis
receptacle exteriorly, a vertically 'reciprocating
opposed sides of said receptacle exteriorly, said
crosshead on which said plunger element is piv 35 pusher elements having convergent and inclined
otally mounted for swinging movement about a
receptacle engaging faces providing a contracthorizontal axis, and cam means for imparting
ing and expanding transverse passage through
swinging movement to said plunger element coin
cidentally with its verticalv reciprocating move
ment,l said pusher elements providing a con
tracting and expanding transverse passage
through which said plunger element is adapted
to have reciprocal and swinging movement, and
whereby the contents of said receptacle are
which said plunger is adapted to have reciprocal
and swinging movement, and cam means mounted
40 on opposite ends of said shaft for imparting re
ciprocating movement to said pusher elements
one in advance of the other, whereby thel contents
of said receptacle are squeezed between the hori
zontally pressed sides and the vertically pressed
squeezed between the horizontally pressed sides 45 end of said receptacle with a kneading action.
and the vertically pressed end of said receptacle
with a kneading action.
DONALD S. FOOTE.
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