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Jan. >7, l1947.
R. J. SHARP I
2,413,793
VERTICAL AXIS TYPE MIXING AND CHASING MILL
Filed Feb. 28, 1944
2 sheets-sheet 1
`
v,AlTToßzA/Ey.
Jan. 7, 1947.
R, J, SHARP
'
2,413,793 -
VERTICAL AXIS TYPE MIXING AND CHASING »MILL
Filed Feb.4 28, 1944
'
2 sheets-sheet 2
f 4 "l 'ply/49177
RE/vw/CK Il SHA/Ef?.
INVENTOR.
ATTO RNISY
'2,413,793
Patented Jan. 7, 1947
UNITED STATES PATENT UFFICE
2,413,793
‘VERTICALCHASING
AXIS TYPE
MILL
MIXING
Renwick J. Sharp, Guatemala-_Guatemala
Appiication February 28, 19411,*Sgerìa‘l No. ‘524,247
( Cl. 3241-123.)
-2
This invention relates Vto a >mixing and grind
lng machine.
The embodiments of the invention shown in
the drawings and hereinafter described are more
»Among other objects of the invention are: to
provide improved »means for >imparting Ya come
bined glyrvatory „androtational rmovement to a
crushing `and grinding rol-ler, in combination vwith
vthe interior surface of a container with which it
particularly intended for use in crushing and
cooperates in performing .the Crushing and~gri-nd«
mixing together the ingredients of a chocolate
ing operation, so that one part of the «roller will
containing confection, but it is to be understood
be vbest adapted V.to «crush the softer lumps or
that, without exceeding the scope of the inven
fragments lof v»the mixture ybeing »fed 'to Ithe ma
tion »as hereinafter claimed, it is capableof Vari
ous additional embodiments adapting it'for use 10 chine, «While Aanother «part of `the `roller will be
best adapted-to crush the harder ‘lumps Áor `frag~
in -a variety of other industries, such,jfor exam
ments in the material being treated; toprovide
ple, as in paint industries.
Ain'iproved Varrangement «of scraping devices
Hereto-Íore, difficulty has been encountered in
which willv continuously f-ree't'ne solid >portions of
grinding up. îgugar-containing chocolate in a rap'
»the material being treated from the walls of the
i‘l, satisfactory manner, because the 'heat _gener
containerprovided therefor,v and at the same
-ated by ¿such Vgrinding _causes caram‘elization of
vtime ‘to cause the scrapedoif material to be con
the sugar; and only `theunsweetened chocolate
tinually lfzept in xcirculation >so asto be more eni
»canfbe 'ground between stone mills, since the heat
generated by'thern is too high and causes _cara
ci-ently acted upon Lby ‘the Acruslfiing means; _to pro
melization of the sugar, and in the case of milk 20 vide animpro-ved arrangement of lsprings where
powder, which is mostly lactose, this carameliza
>the crushing rollers are efficient-ly _continually
tion takes _place at even a lower temperature
>Vtha-n cane or corn sugar, and therefore, only
urged _toward vthetv-all -_of the container, with
which~they cooperate, and 4yet are allowed to re
cede from~said wa‘ll to the extent required to
ing takes "place later, and Where the ~Ollíï style 25 avoid «cloggingthe machine.
Anothergand morefspeciñc object `of the inven
`Á"Pot»Conges"’ are used _they must be kept Warm
tion is to nprovide an ‘improved arrangement vof
with >steam or ‘hot water, and _this phase _alone of
steel Irolls `are usedto refine _the chocolate. YCong
the process sometimes requires as _much as '72
hours constant conging. The conges >as a rule
~frusto~conical crushingjrollers whereby the larger
portions~of _said rollers are utilized to more rap
consist of a plurality of _huge pots, and each pot 30 -idiys'feed «in and _crush _the softer 'lumps or frag
ments of the material while the smaller portions
has its stone lroller which moves forwardly and
'of saidrol-lers are utilized >to more slowly feed
‘backwardly being pushed and _pulled 'by A`means
-anderushfthe harder portions of the material.
of a reciprocating arm operated from the _crank
v'Other objectsadvantages and 'features of in
4portion of a shaft. This is a .gentle process, Ibe.
vention will hereinafter appear.
cause the stone roller only rolls over the thin _ñlm
Referring to ,the _accompanying drawings,
of chocolate caught underneath, and does `not
uwhich _illustrate whatare _at present deemed to
twist or gring, for it could no_t be properly »done
therwise with the sugars already in the choco
be preferred embodiments of ,the invention,
'Figîl ‘is a vertical mid-_section of the complete
late. Chocolate with a burnt flavor'is repulsive
40' machine,_a lportion of 'the base, of _the driving
to the taste.
meansyan'd ¿_i-incertain interior parts being shown
Important objects of this invention are: to pro
vide a machine that will overcome the foregoing
ìîl _eleYâlìÍOl’l
`drawbacks b-y 4removing a great deal _of handling
FigfZis-a_horizontal,section _taken on line 2_-2
,OÍ'FigXL
of the product; to reduce the amount of ñoor
space required for ‘handling the product; to _keep 45 Fig. _Sais a sectional detail taken on line ¿e3
vthe product from so much contact with openair
and dust; to reduce cost of’installing the required
of- Fig.’2.
'
e is a sectional _detail of the vacuum vat
equipment, so thatthe _small manufacturer can
tachment carried by the cover of the container,
`the Vplane of sectionfbeing indicated ~by line â-.-4
make `his own chocolate by the simple process
ci compounding -in his own candy factory the 50 _on vFig.' l.
Fig. >5 is an enlarged sectional detail of the Yout
cocoa and fat which he can obtain locally,.With
sugar (powdered) also obtainable locally, Vvand
let or delivery portion _of the machine _taken on
milk powders, nuts, etc.; and to enable the large
scale manufacturer' to avail' himself Yof the same
advantages as to the elimination of labor re
quired
vhandling and amount of door space
needed, the invention being well adapted to his
, use, also,
the machine can be made vvvery large
the' number of grinding rollers contained
.therein can be increased. f
Figs. 6 to'9 illustrate a modiñcation.
Fig. 6 is aview showing the'frusto-conical
crushing andmixing members togetherwith their
driving means, anportion of the casing .being _in
c-luded'in -the view. „Portions of this View _are
sectioned, asiindicated by line '6a-'6 .on Fig. 7.
Fig. l7 is a section of the structure shown in
2,413,793
3
Fig. 6 taken on angular line 'l-l of the latter
view.
Fig. 8 is an enlarged sectional detail on line
8-8 of Fig. 6.
~
4
tailed in Fig. 3) is carried by upper and lower
horizontal arms 43 and 44, the arm 43 being ñxed
to the shaft I3 in an underlying relation to the
cover boss 24 and the arm 44 being fixed to the
Fig. 9 is a perspective view illustrating the
springs and their mounting means whereby the
lower end portion of the driving shaft I3.
rotary frusto-conical members of Fig~ 6 are urged
provided as a means to adjustably secure the
scraper 42 to its supporting arms so that its po
radially outward into 0r toward contact with the f
Clamp screw and slot arrangements 45 are
sition may be regulated, as required, to give it a
,
,
Referring in detail, ñrst to Figs. 1 to 5 of the li) proper scraping contact with the side wall of the
container.
drawings, among the more important of the parts
At the opposite side of the shaft I3 the arm
shown are: the container I0 furnished with a
44 (through which said shaft extends) is fur
supporting base II and having a cover I2, the
side wall of the container.
nished with a downwardly oiîset extension 46 to
which is secured a scraper 41 positioned to scrape
vertical operating shaft I3 located centrally of '
said container, the upper cross-arm I4 and lower
cross-arm I5, both of said cross-arms having
nearly the entire bottom of the container. This
their midlength portions secured to said shaft,
and the truste-conical spirally grooved members
scraper is shown adjustably secured to the arm
or extension 46 by means of screw and slot ar
I5 which cooperate with the side wall of the con
tainer to crush the materials being treated and
also aid in mixing together their different in
gredients.
.
The shaft I3 is shown having fixed to its upper
end a bevel gear I'I with which meshes a driving
rangements 48.
The container IB is shown constructed as a
tank having a double side wall portion Illa, IIIb
and a like double bottom wall Ißc, I?d, thus pro
viding within said wall portions water spaces 5I
and52. The container’s bottom has a solid cen
bevel gear I3, in turn fixed to shaft I9 of motor 25 tral portion 53 through which is tapped a screw
threaded bore into which screws upwardly a bear
23 mounted upon a bracket 2I fastened to a
ing screw 54 furnished with a lock nut 55, a good
wall 22.
sized vertical admission bore 56 being provided
By preference and as shown the cover I2 is of
in axial alinement with said screw, and access to
a somewhat domed character. Said cover is pro
vided centrally with a stuffing box 23 through 30 the screw being further facilitated by a horizon
tal bore 5l which leads from one side of the base
which the upper part of the shaft I3 extends,
to the upper part of said bore 5B.
said cover having below this stuffing box a down
The driving shaft I3 and screw 54 axially aline
wardly projecting annular boss 24.
with -.each other and their adjacent ends each
At one side of its center the cover I2 is fur
nished with-a tubular intake 25 furnished with 35 contain a concavity, thus providing for interpos
ing a bearing ball 60.
In order to prevent too rapid a settling of the
solid ingredients of the material being operated
on in the container, an agitating or stirring pad
furnished with a hand-hold 29, said carrier being
shown removably fastened to the’tubular part 25 40 dle 5I is provided having a sleeve-like shank 62
whereby it is secured to the shaft I3. This pad
by means of winged screws 35. The means for
dle is inclined as to its width in such a manner
holding the closure 23 in place is illustrated in
as to create an upward current through-out that
Fig. 1 only, further illustration thereof being
portion of the contents of the container upon
deemed unnecessary, as it may be varied to suit
those skilled in the art, it only being essential 45 which it acts. It is shown positioned superjacent
to the scraper 41 so as to cooperate therewith to
that the closure plate 2S be attached in such a
create an upflow of sediment loosened from the
position that its inner face forms a streamline
bottom of the container bysaid scraper,
and correspondingly curved continuation of the
Describing now the preferred mounting means
inner surface of the cover I2 so that a scraping
for the frusto-conical crushing and mixing mem
element may pass thereunder in a smooth, eii'ì- .
bers I 6, each of said members has projecting ax
cient manner.
ially from its upper end a trunnion 65 and down
At that side of its center which is opposite to
wardly from its lower end a trunnion 66. The
the intake means which has been described the
cover is furnished with a tubular vacuum ar
upper cross-arm I4 has cut into each of its ends
rangement 3I having secured to it an air-tight
a vertical guide slot 61, and a like slot 63 is cut
into each end of the lower cross-arm I5. The
cover 32 from which leads a suction pipe 33.
Within the tubular part 3l the cover I 2 has
upper trunnions engage bearing blocks 63 having
through it apertures 34, mostly arranged in rows,
working fits in the upper slots El, and the lower
see Fig. 4, and superjacent’to these apertures
trunnions 65 engage bearing blocks 'I0 having
there extend across said part 3I baiiie plates 35, 60 working ñts in the lower slots E8. Each of the
to -keep the liquid from being sucked out with the
four bearing blocks (69 or 16) is of the same de
air or vapor to be extracted.-l
'
sign and has a periphery extending through more
The container I0 has an outwardly directed
than a semicircle thus preventing it from lateral
flange 36 around its top, this flange being uti
disengagement in relation to the trunnion with
lized to receive bolts 3'I whereby said cover I2
which it cooperates. The open side of each of
is attached, a gasket 38 being provided for said
these bearing blocks is directed away from the
driving shaft I3.
cover I2.
The already mentioned upper cross-arm I4 has
The upper blocks 69 have studs 'II surrounded
riveted or otherwise secured to it an upwardly
by the outer ends of spiral compression springs
extending arm 43 which carries a scraper 4I 70 12, and the lower blocks 'I0 have similar studs ’II
having a scraping edge contoured to conform to
surrounded by the outer ends of like springs 13.
the curvature of the underside of the cover I2
All these springs have their inner ends coiled
and of the closure plate 25. An additional scrap
around studs 'I4 provided for them on the cross
ing member 42, see Fig. 2, is provided to scrape
arms I4 and I5. The upper bearing blocks are
the side wall of the container. This scraper (de 75 supported by flanges I4fand the lower blocks 'I0
a closure plate 26 carried byga handle means
which desirably consists of a lid carrier 21 con
nected to said closure by arms 28 and externally
atravesar
SÍ.
6
are supported by inwardly directed bottomflanges ~
tions <of. the.J arcuatetsprin‘g -98.;1 Each term L; I nl!
l5fî in the end portions of the cross-bar |51
The bearingblocks 5B and 'Eil all have their
carries' an |outwardly‘dire‘cte'd stud> lß5,fand each;
bearing v:block vßilßat its sideï of thel structure, car
trunnion-receiving recesses positioned ln‘such a v
riesa‘ stud |06; thereby providing mountingv
meansfor spiral ,compression springs 12a.
Most-'lof the parts whichcooperate'with the
manner as to, ineiïect, form semi-cylindrical in
clined bores through them within which the trun
nions ».withï which they cooperate workably fit.
lower-:arcuate spring ware constructeduin the
same nranneri'as thercorresponding parts alreadt7
described in connection with the. upperispringv
IlÍOIlS
f
In4 the 'lower- right portion of the container (see 10 98, andr` aref therefore. numbered thefsama. but
There are lillets lßmaround the bases of the trun
Fig. y1)-`is shown an outlet ‘l5 controlled by aver
some of these parts are differenti and will now be
tically operable door plate l'iöïhaving a vertical
rack Tl'ëprojecting from its outer facewhich is
engaged by a gear ‘F8’ operated by'a swingable
describedusing di'lîerent reference numerals.>>
The -lower cross arm- 9i hasalonger central
body portionv Hßfand is shown-furnished with
handle'lg. An apron Eûgspacedoutwardly from 15 an upwardly'direct‘ed >hub -or'annular rise l i2
the »mouth of the outletl la and extending to a
which> carries aset screw H3l for clamping this.
point-therebelow, directs downwardly the outiiow
cross-bar to the driving shaft i t.
ing product. Said apron- (see Fig. 5) carries at
The 1 scrapingrand stirring» members 4shownin
eachïside avertical attaching flange 8l whereby
Figs. 1,»2 land 3 are not shown »in Figs. '7,‘8 and 9,
it isJ secured tothe container, said apron being 20 as their constructionV and 'usewis apparent from>>
rectangularly shaped-as Viewed in horizontal sec
the disclosure'of .the »io’rm'erfvie'ws
tion. A pair of spring-pressed casters S2 are
In the modification the flower‘bearing blocksi‘iíl
shown' having- shank pins 83 extending »slid
and their'studslf'llf are unm@dined'à but are engaged
ably through openings provided for them in the
by theo-ute'r endsof*spiralfcompression springs
apron 8G“, these casters engaging `the outer side 25 H5, the innere-nds: ofiisaid springs surrounding
of the door 'i6 to reduce the friction incident to
bosses íB5ïï(as-above=)' on the lower shiitable arms '
the operation of said door.
The liquid-containing space within the double
teli. These lower armsare ofi-the same size and
shapeias `the corresponding.'y upper ones and, to~
Wall of the container is provided with an inlet
gether with their-*fingersilliLa-re therefore let
controlled by the «plug itâ-.and with' a bottom out 30 tered the same, -butzthey I'each operate in paired
l-et controlled by a plug 86; so that either a heat
slots H1 which are :longer than the ccrrespond~
ing or cooling liquid may be circulated through
ing upper slots I §32.
theYwalled-in space surrounding the interior of
In the operation of. the..` spring-controlled
the container. The inner bottom wall ldd is
truste-conical îrollers-a firm pressure of veach
shown relatively thin, this being desirable to cause
roller against the side. wall of the container is
a more rapid bottom heating or cooling, as the
maintained'at' all times in both embodiments of
case »may be, ofthe contents of the container.
the invention and-«in the'embodiment thereof
A thermometer 88 is shown positioned to indicate
wherein the heating arcuate. springs 9S and 529
externally of the container the temperature o
are‘used; an additional range oi’A yieldability is
the liquid within its double wall.
-
l
40 afforded because. when a large lump is encoun
Describing now the modified means shown in
Figs. 6 to 9 for mounting the frusto-conical mem
bers i6 and controlling their action, the shaft i3
tered by one of the rollers, not only the arm of
the arcuate‘hspring> at that side of the container
is deiiecte'd,V but kalso the opposite arm of 'such
has ñxed to it an upper cross-bar 9i? and a lower
spring yields,l thereby .increasing the range` of
cross-bar 9i, corresponding, respectively to the 45 yieldability.
cross-bars I4 and l5 already described. The mid.
Inbothlembc-d'inentsof the invention, cen’
length portion of the cross-bar 9@ consists of a
trifugalffórceaidsl inëthe spring means urging
block t2 with a vertical bore to fit around the
shaft’ |3ï ‘to which said block is secured by'a pinv
the rollers-.toward the side wall of the container.
The large upper portions of the frusto~conical
93.V From each end of this block projects a pair 50'. rollers are best' adapted to crush the soft. pastv
of horizontal arms 915, the arms of each pair being '
masses orlurnpswhich the stirring means tends.
parallel and horizontally spaced apart, as shown,
to moveetoward thetop >or“ the container, while
to have slidably Íitted between them the bearing ' the Smaller, moreconcentrated masses will tend
blocks 69. The upper cross-bar âiirhas flanges
to sink and be acted upon by the smaller end por~
BSÍ toy support' the upper bearing blocks, and the 55 tions*V of the rollers, which are better adapted to
lower cross-bar 9i has iianges 9H to support the
act upon-'l-them.y In the modification therollers
lower bearing-blocks.
'
'
The principal difference between >the modifica
tion and thev structure iirst described resides inv
the-provision of additional springs QS and 9B, 60
floatably mounted, to regulate the action of the
frusto-conical members iSd. Describing next the
upper‘spring 98 and- parts cooperating with it,
said spring consists of an arcuate horizontal strip
of resilient metal each limb of which is length
ened by'havingriveted to it an arm Iûll which
terminates in a short upwardly directed finger
lill', opposed slots lë2 :being formed through the
Iâztareshowny having their curved faces unn
grooved,`the use of the grooved type yof roller-
being considered .opti-chal.
Itshouldrbe understoodfthat thev present
closure'fisfor the purpose ofßillustration only
that this invention includes all vmodifications
equivalents which wall within the scope of
subject. matter claimed.
What is. claimed ~ is:
dis
and
and
the
~
' 1.”.Inf-almachine` of the‘läind described, a con
tainer having aniupstanding side wall with a
cylindrical inner surface,V a driving shaft mount
inner portions of the aforesaid paired arms 813,
n ed axially withinv said container, roller mounting
said arms §90 being ñtted within these slots for 70 means comprising bearing blocks mounted in
lateral’shifting. In assembling this part of the
guide 'slots ñxed to said shaft,> spirally grooved,
structure the arms iûû are put into place as
frusto-conical rollers having their larger ends
shownïwith their ñngers mi directed upwardly
directed upwardly and provided with trunnions
and .then‘the straight end portions of said arms
projecting from `their upper and'lo'wer -ends
aref'bolted,oriotherwise secured to the endfpor
' mountedin saidcbearíng blocks Ain an opposed'
2,413,793
7
8
relation to each other and maintaining the outer
ed axially within said container, a cross-arm fixed
to said shaft, said cross-arm having a longitudi
nal guide portion at each side of its midlength,
a bearing block in each of said guide portions,l
surfaces of said frusto-conical rollers in a crush
ing and grinding relation to said wall, springs
carried by said mounting means in said guide
slots and urging the trunnions of said rollers to.
ward a contacting relation to said wall, and
Y. crushing means in a cooperative relation to each
means to slidably support said bearing blocks and
tainer wall, roller mounting means carried by said
shaft comprising a horizontally extending cross
the rollers carried thereby in said guide slots, said
means comprising flanges projecting inwardly
into said guide slots along each side thereof.
of said bearing blocks and to the aforesaid con
arm having at its midlength portion fixed to said
shaft, a pair of upstanding crushing rollers one
2. The subject matter of claim 1, and a bowed
of which is located at one end of said cross-arm
spring having its free end portions horizontally
extending through cut-away portions in said
and the other at the opposite end thereof, both
of said rollers being in a cooperative crushing
relation to the side wall of said container, said
roller mounting means at each side of said shaft
and being longitudinally shiftable therein against 15 rollers each having a trunnion which is opera
tively connected with the adjacent end portion
the inner ends of the springs occupying said guide
of said cross-arm and is movable radially in re
slots.
lation to the aforesaid shaft, and a floating spring
3. In a machine of the kind described, a con
carried by said cross-arm, one end portion of said
tainer having an upstanding side Iwall with a
cylindrical inner surface, a driving shaft mount 20 spring being operatively connected with the trun
nion of one of said rollers and the other end por~
ed axially within Isaid container, two vertically
tion of said spring being operatively connected
spaced apart cross-arms ñxed to said shaft, said
with the trunnion of the other of said rollers,
cross-arms having longitudinally extending
whereby, when a radially inward movement of
guides in their end portions, bearing blocks in
either of said trunnions takes place independ
said guides, rollers mounted within said container ‘
ently of the other both the arms of said floating
in a grinding relation to said side wall, said rollers
spring are deformed to compensate therefor.
having trunnions operatively connected to said
8. In a machine of the kind described, a con
bearing blocks, and bowed springs having end
tainer having an upstanding side Wall with a
portions carried by said cross-arms at opposite
- cylindrical inner surface, an upstanding driving
sides of said shaft and positioned so to act upon
shaft located centrally of said container, a cross
said bearing blocks to urge said rollers toward
arrn ñxed to said shaft, said cross-arm having a
said wall.
longitudinal guide portion at each side of its mid
4. In a machine of the kind described, a con
length, a bearing block in each of said guide por
tainer having an upstanding side wall with a
tions, crushing means in a cooperative relation
cylindrical inner surface, a driving shaft mount
to each of said bearing'biocks and to the afore
ed axially within said container, a cross-arm fixed
said ccntainer wall, resilient means carried by
to said shaft, said cross-arm having a longitudi~
said cross-arm and tending to move said bearing
nal guide portion at each side of its midlength,
blocks outwardly from said shaft, Isaid resilient
a, bearing block in each of said guide portions,
crushing means in a cooperative relation to each 40 means comprising a bowed spring having end por
tions attached to said cross-arm at opposite sides
of said bearing blocks and to the aforesaid con
of said shaft, said end portions of said spring
tainer wall, and resilient means carried by said
being operatively connected to ‘said bearing
cross-arm and tending to move said bearing
blocks, a scraper fixed to said shaft and posi
blocks outwardly from said shaft, said resilient
tioned to scrape the bottom of the container when
means comprising a bowed spring having end
he shaft rotates, and a paddle fixed to said shaft
portions attached to said cross-arm at opposite
and extending radially therefrom in the lower
sides of said shaft, said end portions of said spring
portion of said container at a higher level than
being operatively connected to said bearing
blocks.
-
5. The subject matter of claim 4, and a spiral I
compression spring positioned to convey pres
sure from each end portion of said bowed spring
to the bearing block with which is cooperates.
6. In a machine of the kind described, a con
tainer having an upstanding side wall with a ;
said scraper, said paddle being superjacent to
_said scraper and so inclined as to produce an
upward current of the part of the contents of
the container upon which it acts.
9. In a machine of the kind described, a con
tainer >having an upstanding side wall with a
cylindrical surface, a driving shaft mounted axi
ally within said container, upper and lower par
cylindrical inner surface, a driving shaft mount
allel cross-arms fixed to said shaft, a roller car
ed axially within said container, a cross-arm ñxed
ried by and bridging the distance between said
to said shaft, said cross-arm having a longitudi
cross-arms at each side of said shaft, said rollers
nal guide portion at each side of its midlength,
a bearing block in each of said guide portions, 60 being in a crushing or grinding relation to said
wall, a scraper having an upwardly and down
crushing means in a cooperative relation to each
wardly extending scraping portion in engagement
of said bearing blocks and to the aforesaid con
with said wall, means whereby said scraper is
tainer wall, an arcuate spring structure, said
maintained in a fixed relation to said shaft to
cross-arm having cut-away portions at each side
of said shaft and an end portion of said spring 65 gyrate therearound along with said' rollers, and
resilient means carried by said cross-arms and
structure extending horizontally through each of
tending to move said rollers outwardly from said
said cut-away portions and being therein shift
able longitudinally of said cross-arm, and a spiral
shaft, said resilient means comprising a bowed
compression spring bridging the space between
spring having end portions attached to each said
each of said bearing blocks and the end portion 70 cross-arm at opposite sides of said shaft, said end
portions of said springs being operatively oon
of the aforesaid arcuate spring structure at that
side of the aforesaid shaft.
A
nected to the ends of said rollers.
7. In a machine of the kind described, a. con
l0. In a' machine of the kind described, a con
tainer having an upstanding side wall with a
tainer having an upstanding side wallV with a
cylindrical inner surface, a driving shaftmount
cylindrical inner surface, a driving shaft mount
2,413,793
10
ed axially within said container, upper and lower
parallel cross-arms fixed to said shaft, said cross
arms having a longitudinal guide-portion at each
side of their midlength, a bearing block slidably
mounted in each of said guide portions, frusto
conical rollers having their larger ends directed
upwardly and provided with axially alined trun
operates, and means to slidably support said
bearing blocks and in turn the rollers carried
thereby in said guide portions, said means com
prising flanges projecting inwardly into said guide
portions along each side thereof.
nions projecting from their upper and lower ends
13. In a machine of the kind described, a con
tainer having an upstanding side Wall with a
cylindrical inner surface, a driving shaft mount
journalled in said bearing blocks, said rollers
ed axially within said container, upper and lower
bridging the distance between said cross-arms at 10 parallel cross-arms fixed to said shaft, said cross
arms having a longitudinal guide-portion at each
each side of said shaft, the faces of said rollers
being in a crushing or grinding contact with said
side of their midlength, a. bearing block slidably
mounted in each of said guide portions, frusto
wall, resilient means carried by said cross-arms
tending to move said bearing blocks outwardly
conical rollers having their larger ends directed
from said shaft, and means to slidably support 15 upwardly and provided with axially alined trun
nions projecting from their upper and lower ends
said bearing blocks and in turn the rollers car
ried thereby in. said guide portions, said means
journalled in said bearing blocks, said rollers
comprising flanges projecting inwardly into said
bridging the distance between said cross-arms at
guide portions along each side thereof, a dome
each side of said shaft, the faces of said rollers
shaped cover for said container, and a scraper 20 being in a crushing or grinding Contact with said
having a scraping edge contoured to conform to
wall, resilient means carried by said cross-arms
and tending to move said bearing blocks out
the curvature of the underside of the cover car
ried by said upper cross-arm.
.
~
wardly from said shaft, said resilient means com~
prising a bowed spring having end portions at
11. >In a machine of the kind described, a con
tainer having an upstanding side wall with a 25 tached to said cross-arms at opposite sides of said
' shaft, said end portions of said spring being op~
cylindrical inner surface, a driving shaft mount
eratively connected to said bearing blocks, and
ed axially within said container, upper and lower
means to slidably support said bearing blocks and
parallel cross-arms fixed to said shaft, said cross
arms having a longitudinal guide-portion at each
in turn the rollers carried thereby in said guide
side of their midlength, a bearing block slidably 30 portions, said means comprising flanges project
ing inwardly into said guide portions along each
mounted in `each of said guide portions, frusto
conical rollers having their larger ends directed
side thereof.
upwardly and provided with axially alined trun
14. ‘In a machine of the kind described, a con
tainer having an upstanding side wall with a
nions projecting from their upper and lower ends
journalled in said bearing blocks, said rollers 35 cylindrical inner surface, a driving shaft mount
ed axially within said container, a cross-arm fixed
bridging the distance between said cross-arms at
to said shaft, said cross-arm having a longitudi
each side of said shaft, the faces of said rollers
nal guide portion at each side of its midlength,
being in a, crushing or grinding contact with said
a bearing block in each of said guide portions,
wall, resilient means carried by said cross-arms
and tending to move said bearing blocks out 40 crushing means in a cooperative relation to each
of said bearing blocks and to the aforesaid con
wardly from said shaft, said frusto-conically
tainer wall, and an arcuate spring structure, said
shaped rollers having their frusto-conical faces
cross-arm having a cut-away portion at each
spirally grooved, and means to slidably support
side of said shaft and an end portion of said
said bearing blocks and in turn the rollers car
spring structure extending horizontally through
ried thereby in said guide portions, said means
comprising flanges projecting inwardly into said
each of said cut-away portions and being therein
guide portions along each side thereof.
shiftable longitudinally of said cross-arm to move
side of their midlength, a bearing block slidably
mounted in each of said guide portions, frusto
conical rollers having their larger ends directed
having longitudinal guide portions at each side of
their midlength, bearing blocks slidably mount
ed in each of said guide portions, crushing means
in a cooperative relation to each of said bearing
said bearing blocks outwardly.
12. In a machine of the kind described, a con
15. In a machine of the kind described, a con
tainer having an upstanding side wall with a
cylindrical inner surface, a driving shaft mount 50 tainer having an upstanding side wall with a
cylindrical inner surface, a driving shaft mount
ed axially within said container, upper and lower
ed axially within said container, upper and lower
parallel cross-arms fixed to said shaft, said cross
cross-arms ñXed to said shaft, said cross-arms
arms having a longitudinal guide-portion at each
upwardly and provided with axially alined trun
nions projecting from their upper and lower ends
blocks and to the aforesaid container wall, and Y
journalled in said bearing blocks, said rollers
bridging the distance between said cross-arms at
an upper and lower arcuate spring structure, said
upper and lower cross-arms having cut-away
portions at each side of said shaft and an end
portion of each of said upper and lower spring
each side of said shaft, the faces of said rollers
being in a crushing or grinding contact with said
wall, resilient means carried by said cross-arms
structures extending horizontally through each of
said cut-away portions and being therein shift
and tending to move said bearing blocks out
wardly from said shaft, said resilient means com 65 able longitudinally of said cross-arms to move
said bearing blocks outwardly.
prising a bowed spring having end portions at
16. The subject matter of claim 15 and, a spiral
tached to said cross-arms at opposite sides of
compression spring bridging the space between
said shaft, said end portions of said spring being
each of said bearing blocks and the end portions
operatively connected to said bearing blocks, a
spiral compression spring positioned to convey 70 of the aforesaid arcuate spring structures at that
side of the aforesaid shaft.
pressure from each end portion of said bowed
spring to said bearing blocks with which it co
RENWICK J. SHARP.
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