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Патент USA US2404457

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July 23, 1946.
_
J_' 5, REEVES ’
-
~2,404,457
DECORTICATING i MACHINE
_ Filed March 25, 1944
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By
Jblui' s. Reeves;
ATTORNEYS
.
July 23,1946.'
"
J, s, REEvgs
'
$2,404,457
DECORTICATING MACHINE
Fi'led March 25, 194‘,v
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: 'INVENfOR.
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ATTORNEYS
July 23, 1.946.
,
I J. 5. REEVES'
'
2,404,457
DECORTICATING MACHINE
Filed March 25, 1944
'
5 Sheets-Sheet 3
July 23,1946’
'
- J. s. REEVES
2,404,457
DECORTICAT-ING MACHINE
Filed March 25, 1944
s Sheets-Sheet 4
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JOIZIILSPEM.
A 7703M
July 23, 1946.
'
J, 5, REEVES.
1
DECORTICATING MACHINE
Filed March 25, 1944
2,404,457
'
-
-
5 Sheets-Sheet 5
A TTOP/VEYS
‘2,404,457 *
Patented July 23, 1946
UNITED STATES PATENT
_,
2,404,457 "
DECORTICATING MACHINE ' _
.lohn S‘. Reeves, Baltimore, Md.'
_
‘ Application March 25, 1944, Serial No. 528,128
12 Claims.
7
(01. 19-116) ,
1
This invention relates to decorticating ma
chines particularly adapted for the production
of ?ber from the leaves of plants of the Agave
family, such as Sansevieria, cabulla, Maya, pita
?ora, henequen, and the like.
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The leaves of such plants are long and rela
tively narrow and contain. longitudinalwhite
?bers which can be recovered by cleaning away
the pulp, juice, etc. In the usual machine this‘
of the invention, reference being had to the ape
pended claims for this purpose.
In the drawings,
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Fig. 1 is a side view of an'apparatus embody;
ing the invention; "
Fig. 2 is a plan view of Fig. ,1;
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Fig. 3Vis a section on the line 3-43 of Fig. 2;
3a is a detail view showing. a scutching
support;
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waste material, referred to as bagasse, is stripped 10. r Fig. 4 is a detail'view in perspective offa‘jpart
from the leaves by scutching blades mounted on
oi Figs.
the apparatus;
5 and 6 illustrate
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, 1 the’
- ' shape
" I ‘ of
I the
the periphery of a rotating wheel or drum. The
leaves hang downwardly over an. arcuate
v Fig. '7 is an enlarged detail showing the action
scutching face substantially concentric with the
scutching blades;
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Y
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wheel, the blades exerting a squeezing and scrap 15 of Fig.
the scutching
8‘is a planblade:
view of another
'
embodiment
I ' of
ing effect, which travels progressively along the
leaves toward their free ends, stripping away, the
.detail views- of a ‘chain v '
; FigsJQ‘ and 10"are
‘
bagasse. The clearance between the scutching
surface and blades must be very small to insure
mechanism
Fig. 11 is used
aside
in View
the'apparatus
of Fig. 8, working
of Fig. 8}"from
the-invention;
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e?icient cleaning, 1. e., on the ‘order of several 20
thousandths of an inch.
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the bottom of the latter ?gure;
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‘2 ~ 1 f v
from butt to tip, they are held ?rst so that one
Fig. lzisa partialv side view of Fig. 8 vlooking
from the right-hand side of the latter ?gure and
viding greater safetyfor personnel.
upper half 'of the wheel may be enclosed-in a
To provide completecleaning of the leaves
showing the details of the chain drive; and’
end hangs down over the scutching faceand this
Fig. 13 is a perspective detail of the "chain.
half of the leaf is cleaned, andthen the leaves‘ ;,
Referring first to Figs. 1 to '7, inclusive, the
are automatically reversed and held‘ by the
machine in general comprises a suitable frame
cleaned ?ber while the other end or half is be
carrying a horizontal conveying table which ro
ing cleaned. The second cleaning operation
tates on a vertical axis and is ‘provided at one
may be accomplished by a second scutching wheel
side with a scutching ‘support and wheel co
as in my prior Patent No. 2,341,290, or each leaf
operating therewith. I Leaves'to be cleaned are,
may be caused to pass the same scutching wheel
fed to the‘machine in any suitable manner and
twice, once for each end to be cleaned. The
are. ‘carried twice past the scutching wheel in
present invention relates particularly to a ma
order to clean both'ends ‘or‘halves of the leaves
chine of the latter type.
as described above, the cleaned ?ber being there_
One of the objectsof the invention is to pro- '
after discharged automatically from the machine.
vide such a, machine of novel and improved de-.
‘ In the form shown, the machine framev co‘r'n—
sign and constructionwhichis simple and in
prises: a bed 1 which is built‘ up atone side to
expensive with a minimum of moving parts to
form horizontal supports 2 for the bearings 3Vof,
deteriorate or wearvout in service, thus redu_c—
ing construction and maintenance cost and pro ,40 a scutching wheel indicated generally 'at"4. The
,
Another object is to provide an improved form
of scutching face which enables very close clear
ance to be maintained for e?ective cleaning
while at the same time too great compression of 45
the ?bers themselves with consequenthdamage
or breaking is avoided.
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suitable casing 5.' The'horizontal frame m'emé
bers’ty support a step bearing 1 for the shaft 8
of a rotating conveyingtable 9, theupper 'end
of the shafti‘having a bearingv l0 carriedby' the
frame members H'. 'The members I] also sup.- '
portya motor. 12 ‘v which “drives the scutching
,form of scutching device or blade ‘for-crushing
wheel 4 in any suitable; mannerias? by a belt :I 3. r
‘ "Leaves to be' cleaned arefed to. the top“ of. the
ings, are ,forhpurposes of} illustration only.‘ ‘and
of the table is provided with any suitable means
A further object ,: is, to ' provide ‘an I improved
and stripping away the bagassefrom the leaves. ., 50 table 9 at one'side thereof ins'any suitable man
ner; (e- ‘g;, .at. the lower side of Fig. .2),L.and are
Two embodiments of the invention have been
conveyed by the table past the scutching wheel
illustrated in theaccornpanying drawings but
4 as‘ hereinafter described. 'Theupper surface
it' isyto be expressly understood‘ that said draw-.
are nOtffO be taken as a‘ de?nition of. iheilimits a ‘foren'gaging the leaves, such‘ as the projecting
4
. J '7 pins ‘la-‘and is rotated in any suitable manner
‘yes by means of the gear wheel 15 carried by the
shaft 8 and driven by a pinion E6 on a vertical
the cooperating surfaces between which the ?ber
is engaged being suitably shaped for good holdingv
action. As shown the table periphery carries a
band 4| which is provided with ribs 42 engaging
in corresponding grooves in the inner surface
shaft’ [1 the lower end of which carries a worm
wheel l8 meshing with a worm l9 driven by a
_
of the bar 21. The uncleaned ends of the leaves
now emerge from under the presser bar extension
39, and as the cleaned ?ber advances the bar
motor 20. ‘
As each leaf approaches the scutching' wheel,
one of its ends is held on the table top and the
leaf is bent'downwardly over the periphery of. the ,
35 pulls the uncleaned ends of the leaves off the
,,tdp;_of the table and causes them to drop down
table so'that its lower‘ha‘lf is in'positionjto pass.
over aicurved 'scutchinvg support 2! secured in '
over the outer surface of the-member 21. The
any suitable manner to‘the circular ‘frame meme; j .7‘leaves in this position are carried around the table
ber 22. In the. form shown, the end of the leaf?“ past the loading station and again under‘ the
- is held on the table topby a presser bar 2-3 grooved
'member 28‘ so that the uncleaned halves now
to receive 7 the pins l4 and pressed _ downwardly . 15
into engagement with the top of the table‘ by suit
able springs 24, the end of the barbei'ng-prefer’-v
ably curved upwardly at 25 to ride over the ap
ber 28, they slide down'the inclined end 33 of
preaching leaves. This bar cooperates with the
the member 27 which thus comprises a means for
V inarginalsurface of thejtable throughout the re
discharging the cleaned ?ber‘from the machine.
' The periphery of the scutchingwheel 4 carries
gion‘inwhi'ch‘ thelleave's'fare subjected to the
scutching action‘; beginning before the leaves
a plurality of scutching blades 43 whic‘l'rare‘pref-v
reach the scutching wheel and terminating/at
erably ofrthe' type illustrated iri'xdetail in Figs. 5,
any suitableipoint after they leave the scutching
wheel."
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6 and '7. 4 For the l'purpose of ‘clearly 5 describing
and illustrating the preferred shape Of'] the
"@
' The depending'j?angei? of the table is sur
rounded'throughout a, considerable portio‘n'of its
circumference by 'acurved bar ‘27 for a purpose
,
pass'over. the scutching support 2| and are
cleaned; As the fully cleaned leaves move past
the scutching wheel beyond the end of the mem
scut'ching blades; Figs". 5and6' show one suitable
way of 'maldngsuch blades. ‘The operation be
gins with a'blank of circular cross section tapered
described hereinafter, and the leaves’ arejbent
at one'end to 'a nose as --showh inii‘ig. fifthis
positively "down ‘over the bar 21 by the following 56 blank being subsequently quartered along the
i
A leaf-holdinginemben28 cooperates
means;
lines 1240f‘. Fig‘. 5: to form four‘ of the?‘ blades
with the outer surface of'the bar‘Z'I adjacent the
43. Y Before this’ is donefhowever,notches“ are
scutching wheel, the’ endrzs‘ ofgsaid member
ground or otherwise suitably: formed'in‘théj sur
face of the blank, thesenot'che's' extendin'g'in an
being. bent away‘ from the periphery of ‘the
table. The weight of the ends ,0‘f_'the leaves
projecting beyond the periphery’ Qf the vtable
axial direction'and each being ‘substantially pan
Vallel to but spacedi'froiniYone edge of: one of the
causes them to bend’ downwardly enough to pass
under ‘the end 29 after which they are bent
sharply downward between the members 21 and
r 28 as'they’ reach the scutching wheel.-
quadrantal bodies subsequently to be cut from
théliblank.
The 00-’
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V‘He'n'ce each‘blade when‘completed comprises
operating surfaces'of ther'nernb'ers'l‘l ‘and123 are
an arcuate surface 46 and a scraping‘iblade ‘41
throughout most of its length, but tapers off to a
preferably provided with'inter'engaging ribs and '
point‘ at one end. As shown in ‘Fig. 2, these blades
grooves indicated at "at, in Fig; 1 to' assist in hold-.
are mounted on; the periphery of the 's‘cutching
f ing thejleaves' against the downward pull of the’
wheel at a slight angle to”: its axiswith their
scutchin'g wheel. Preferably the periphery of the 145 tapered ends at the side, of the wheel-a‘‘preached
table '9 is‘ also supported adjacent the 's’cutching'
by the leaves and with their 'arcuat‘e Slll"
Wheel against this same downward pullyas by
means of a‘roller 3| carried by ab-racket 32 se
_
advance of the 'bIadesITWithresceC to't'he'
direction of rotation of-"th'e Wheel; ~ ‘Preferably
the blades are adjustabl'y mounted by suitable
,As the leaves-pass'the scutcliing wheel and. 60 means‘s'uch as angles dBl'iaying' radialslots 49
move onward with the'rotating‘. table, the lower
wherein’the blade-holdingsrérews in can be ‘ad
cured‘ to the frame portion 22.'
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halves comprise 'depulped' andjcleaned ?ber.
Shortly‘beyond the scutching wheel, the member
justed and adjusting screws 5-? projecting through
the surface of the scutchin'g when; The .mas'sof
28 terminates and the member 21 is bent/away .
‘ ~ from the periphery of the table and 'al‘so‘inclined
g downwardly at 33. Beyond this point means are
leaves hanging down and.’
iii-gla‘cro'ss the
'55 scutching support are ?rst-‘cf he N down i'a'gainst V
providedfor elevating the middle portion of the
leaf sothat the depending cleaned’?ber is-al‘so
elevatedvand pulledjover'the inclined extension
the support lightly‘ by_the f
ends ‘of-the
blades; and as they move" farther
voss the sup-v
port theyare crushed down to "a ‘greater’ extent
‘by the arcuateportions "dda‘nd then scraped by
the blades 4'1.‘v Herushesszi" are/preferably mounted
reaches the'end'tsll of the member 21.1 ' In vthe
, form shown, this'is accomplished by "a bar 35
carried by a post SjS?and having a downwardly,
inclined portion ?ltermihatihg inn relatively
Sharp edge 38 whidh'béars on. themarein Pith‘?
on the periphery of the ‘séutbhing wheel between V
the blades to assist’, in cleaning the'nte'r.‘ ' f " '
As noted above, it is necessary for e?ective
cleaning of the leaves that the seraper blades?‘ 47
'05 be 'ad'jus'tedto a very?clbseiclearancerelative to
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"
"
_' table surface‘adjacent" the end of "the presser , thels'cutchi'ng‘ support-9th.. o
bar‘23. ' Hence as'the
leaves _emerg'e"__from'under V thousandths of
‘
in
the Fig.
bar 23,
4; theuncleaned
they ride up'theends
incline'tl
‘being as'ishown
howevenv
‘ this/‘j "
' heldion the table to'p'by suitable means such as ‘it
‘
11, be
the extension 39 of I the presser .-barj_ 23 which
may be providedwith an‘ additional spring 40,
._ The‘; elevated ?ber hanging down‘ from" the
bar 35 then‘ passes under thejen'd 34 andpbetween
sgurcmne. Supp-o
rpv h‘
1
the ‘member :21 ahq-theperiphery or the table, "it extending ‘longitudinally? 0 theisuphéitirni
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2,404,457
tom. The chain then passes around a horizontal
sprocket 13 and a vertical sprocket 14' parallel to
the ‘sprockets 61 and 69. Thus‘ the chain travels
a vertical path 15_to a vertical sprocket 16 parallel
to the sprocket ‘ll, andthen a horizontal path ‘I1
direction of movement of theblades'vrelative there‘
to. This construction is illustrated‘ in detail in
Fig-3a, in which‘the scutching surface 53 is pro
vided with a plurality of longitudinal grooves or
corrugations. These grooves are preferably quite
'small,<good results having been obtained with
leading ‘back toward the" periphery of the table
grooves which are 0.01 inch wide and 0.003 inch
deep. They provide space for the ?bers so‘ that
they are not subjected to undue compression be
tween the scraping blades and the scutching sur 10
face, thereby minimizing damage to the product.
Either one or both of the members" 2'I1and 28
withlthepads 6| on the proper side of thechain
for engagement with the table as described above.
The chain may be driven by any desired sprocket
and for purposes of illustration a motor 18 has
been shown connected to a driving sprocket 19
adjacent the point at which the chain again joins
the periphery of the table.
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can be replaced by chains running in engagement
' While only two embodiments have been ‘de
with the periphery of the table-as illustrated by
Figs. 8-13, inclusive, which show an apparatus 16 scribed and illustrated, it will be apparent to those
skilled in the art that the invention is not limited
corresponding in construction and operation to
to these embodiments but may have a variety of‘
the apparatus of Figs. 1-7 except that it has a
mechanical lforms without departing from its‘
moving chain in place of the stationary bar 21
spirit, andalso that various changes may be made
(the member 28 or a chain equivalent thereof
being omitted for simpli?cation) . Hence the con 20 in the form, details of construction and arrange?
ment of the parts. Hence reference should be
struction and operation of this apparatus will be
apparent from the foregoing description, except
had to the appended claims for a de?nition of the
as to the details of the chain mechanism.
limits of the invention.
What is claimed is:
For reasons appearing hereinafter, it is desir
1. In apparatus of the class described, a rotat-V
ing'table adapted to receive leaves to be cleaned,
a scutching support beneath the periphery of
9, 10 and 13 illustrate a chain‘const'ruction of
this type. This chain comprises alternate’ link ‘ said table at one‘side thereof and a scutching
wheel cooperating with said support, stationary
members which are the same in construction but
are turned in opposite directions. Each of these 30 leaic'holding' means‘cooperating with the upper
marginal surface of said table and adapted to
links comprises at one end a pair of arms 51
hold-one end of a leafon-the table with the other
adapted to carry a link pin 58, and at the other
end hangingrdown over said scutching support,
end a pair of arms 59 adapted to carry a link pin
additional stationary means located beyond said
60 at right angles to the link pin 58. Hence a
sprocketwhich engages only thelink pins 60 per 85 scutching‘ wheel ‘for elevating the depending
cleaned end while the uncleaned end is thus held,
mits the same to turn in a plane perpendicular
able that the chain be capable of'turning in two 25
planes at right angles to each otherand Figs.
means. cooperating with the periphery of the
to the axis of these pins, whereas a sprocket which
engages only the link pins 58 permits the chain
to turn in a plane at right angles to these pins
and to the ?rst plane.
'
table for. engaging and holding the elevated
cleaned. end, .and means for thereafter overturn
40 ing :theiuncleaned endof the leaf ‘coming down
over said peripheral holding means, said periph
The chain links are provided with pads 6| form
eral holding means extending continuously from
the point of engagement of said cleaned end to
ing a substantially continuous surface cooper~
ating with the periphery of the rotating table to
and beyond said scutching wheel.
hold the cleaned ?ber in the same manner as the
member 21 of Figs. 1-7. These pads 6| may be
mounted on the chain in any suitable manner and
as shown they are riveted at 62 to one 'of the arms
45
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2. Apparatus as claimed in claim 1 wherein
said peripheral holding means comprises a sta
tionary bar curved to cooperate with the periph
ery of the table.
.
59 adjacent each of the link pins 60. The abut
3. Apparatus as claimed in claim 1 wherein said
tingvv ends of the pads are curved at 63 toaccom
modate the turning of the chain on the link pins 50 peripheral holding means comprises a chain run
ning in engagement with the periphery of the
60, and su?icient clearance is provided between
table.
the abutting ends of the pads to permit turning
4. In apparatus of the class described, a rotat
of the chain about the linkspins 58. These pads
ingtable adapted to receive leaves to be cleaned,
form a substantially continuous surface around
ascutching support beneath the periphery of the
the periphery of the table and are provided with
table at one side thereof and a scutching wheel
grooves 64 which cooperate with ribs .65 on the
cooperating with said support, stationary leaf
table for holding the cleaned ?ber as described
holding means cooperating with the upper mar
above. A suitable chain carrier 68 may be pro
gina1 surface of said table and adapted to hold
one end of a leaf on the table with the other end
00
Figs. 8, 11 and 12 show the course of the chain
hanging 'down over said support, a stationaryin
‘whereby the pads which leave the table beyond
clined member beyond ‘said wheel for elevating
the scutching wheel for the purpose of discharg
an intermediate part of the leaf and the cleaned
ing the clean ?ber are brought backiagainst-the
end, therewith while the uncleaned end is thus
periphery of the wheel to engage the elevated
held-,: means cooperating with the periphery-{of
cleaned ?ber at a point corresponding to the‘ end
the: tablefor engaging and holding the. elevated
34 of the. member' 21 described above. As the
cleaned end, and means for thereafter overturn
chain leaves the scutching wheel, it passes over a
ing the uncleaned end of the leaf to hang down
vertical sprocket 61 and moves in a downwardly
over saidperipheral holding means, said periph
inclined, path as shown at 68 to a second vertical
eral holding meansextending continuously from
70
sprocket 69, thisincline corresponding to the dis
the point of engagement of said cleaned end'to
charge extension 33 of the previous embodiment.
and beyond said scutching wheel.
The chain then descends vertically at ‘ID to a ver
' 5. In apparatus of the class described, a rotat
tical sprocket ‘H at right angles to the sprockets
ing table adapted to receive leaves to be cleaned,
61 and 69 which turns the chain into a horizontal
path indicated at 12 with the pads 6| on the bot 75 a scutching support beneath the periphery of said
vided where desired.
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assists?
7
table at one side thereof and a something Wheel
cooperating’ with said support, stationary leaf
holding means cooperating with the upper margi
nal surface of said table and adapted to holdione
means and the. beginning-oi said‘ inner holding‘
means for elevating the depending cleaned end .of
the leaf, said elevated end being thereafter on
sagéd between, said inner means and the periph
end of a leaf on the table with theipther end
ery of the table, and means for thereafter over
hanging down over said support, additional sta
tionary means located beyond said Wheel ‘for ele
vating the depending cleaned end while the un
turning the uncleaned end of the leaf to hang
down over said inner'holding means before it
reaches the beginning ‘of said outer means.
10. Apparatus of the class described comprising
cleaned end is thus held, means cooperating with
the periphery of the table for engaging and hold 10 a rotating table adapted to receive leaves to be
ing the elevated cleaned end, and means for there.
cleaned at oneside. thereof, a soutchine support
after overturning theiuncleaned end of the leaf
beneath the periphery of the table at a point
to hang down over said peripheral holding means,
beyond the receiving station in the direction of
said peripheral holding means extending continu'
rotation, a soutohins Wheel pooperaiins with said
ously' from the point . of engagement of 7 said 15
cleaned end to and beyond said scutehing wheel,
said scutching wheel carrying a plurality of blades
swiping over said scutching support to remove
pulpy matter from the leaf and a plurality of
support, leaf holding means cooperating with the
periphery of the table'and extending from a point .
ahead of the receiving station past said station
and scutching wheel, and terminating in, a dis
Charge extension at one side of the tablet a sec
brushes for brushingthe det-pulped ?ber.
ond leaf holdingmeans cooperating peripherally
' , 6.7 In apparatus of the class described, a rotat
With said first holding means and extending from
a point beyond said receiving station past said
scutching wheel to a point short of said discharge
ing table adapted to receive leaves to be cleaned,
a soutching support beneath the periphery of the
table at one side thereof and a scutching wheel
cooperating with said support, stationary leaf
holding means cooperating with the upper mar
ginal surface of said table and adapted to hold
extension, means for holding one, end of a leaf
25 on the table top with the leaf bent down, between '
said ?rst and second holding means and its ‘other
end hanging over said support, means'for elevat
one end of a leaf ,on the table with the other end
ing the cleaned end ‘of the leaf before'it reaches
hanging down’ over said support, a stationary in
the beginning of said first, holding means, where
clined member’ beyond said wheel for elevating an 30 by the elevated end is engaged between said ?rst
intermediate, part of the leaf and the cleaned end
holding means and the periphery of the table, and
therewith while ‘the uncleaned end is thus held,
meansifor thereafter overturning the uncleaned
means cooperating with the periphery'of the table
end of the leaf to hang down over said ?rst hold
for‘engaging and holding theele-vated cleaned
'end, and means for thereafter overturning the 35 11. Apparatus of theclassdescribed compris
uncleaned end of the leafto hang down over said’
ing a scutching wheel, a scutching support sub.
' peripheral holding means, said peripheral hold-_
stantially concentric therewith, and “means ,for
ing means extending continuously from the point
feeding leaves to‘be cleaned past said support J
ing
means.
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of engagement of said cleaned end to'and beyond
with’ their ends hanging down thereover, said
said scutching wheel, said scutching wheel carry-v 40 wheel carrying a scutching device extending
ing a plurality of blades wiping over said'scutch
transversely of its periphery at an angle to the '
ing support to remove pulpy matter from the leaf
wheel axis,r.said device comprising an arcuate
and a plurality of brushes for brushing the de
surface adapted to crush the leaves against said
support followedby a‘ scraper blade of’ greater
'7. - Apparatus as claimed in claim 6 wherein 45 radial extent from the wheel axis for stripping
said peripheral holdingmeans comprises a sta-‘
the pulpy matter from the ?ber, the surface of
tionary bar curved to cooperate with the periph
said support being grooved in the direction of
pulped
?ber.
'
‘
ery of the table.
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movement of said blade.v -
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V
8. Apparatus as claimed in claim 6 wherein said
12, Apparatus ofthe class described compris
peripheral holding‘ means comprises a chain‘ run 50 ing av scutching Wheel, a scutchin'g support sub
ning in engagement with the periphery of the
stantially concentric therewith, and means for
table.
7
,
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9. Apparatus of the class described comprising
feeding leaves to be cleaned past said support
with their ends hanging down thereover, said
wheel carrying a scutching device extending
a rotating table adapted to receive leaves to be
cleaned, a scutching support beneath the periph 55 transversely of its periphery at an angle to the
ery of said table at one side thereof and a scutch
wheel axis, said device comprising an arcuate sur
ing wheel cooperating with said support, inner
face adapted to crush the leaves against said sup
peripheral leaf'holding means’ cooperating with
port followed by a scraper blade of greater radial
the periphery of said table and extending past
extent from ‘the wheel axis for stripping the
said scutching wheel, outer peripheral leaf hold 60 pulpy matter from‘ the ?ber,’ the radial extent
ing means cooperating with said ?rst means and
fromthe wheel axis of ‘said areuate surface and
extending past the scutching wheel, the leaf being
said blade decreasing toward the side of the wheel
: , bent down between said inner and outer periph
which the leaves approach, the surface, of said
eral holding means with itsend hanging down
support being grooved'in the direction of move
over said support as it passes saidv wheel, means
ment of said blade.
located between the/endof said outer holding '
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JOHN SfREEVES; .,
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