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Патент USA US3022972

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Feb. 27, 1962
H. F. BENOIT
3,022,962
sPooL
Filed June 2, 1960
JNVENTOR.
HENRY F. BE/vo/'T
United States Patent O f ice
2
1
in connection with the accompanying drawings wherein
3,022,962
.
3,0Z2ßb2
Patented Feb. 2?, läd?.
FIG. 1 is a side elevational view of a spool embodying
SPOOL
the invention;
Henry F. Benoit, P.O. Box 112, Charlton City, Mass.
Filed June 2, 1960, Ser. No. 33,583
7 Claims. (Cl. 242--118.61)
FIG. 2 is an end view of the spool;
FIG. 3 is an enlarged fragmentary sectional view taken
as on line 3_3 of FIG. l and looking in the direction
indicated by the arrows;
FIG. 4 is a fragmentary sectional view of one end
This invention relates to improvements in spools for
use with mule spinning, carding and like machines and
has particular reference to the method of making the
same.
t
portion of the device embodying the invention;
FIG. 5 is an enlarged fragmentary sectional view taken
10
as on line 5-5 of FIG. 3 and looking in the direction
Spools of the character embodying the invention are
adapted for use in carrying a plurality of wool strands
or the like which are initially wound on the spool and
indicated by the arrows; and
FIG. 6 is an enlarged fragmentary sectional view of
which are thereafter withdrawn therefrom during spin~
a modified form of the invention.
ning, carding> or like operations. In performing such 15
Referring to the drawings wherein like characters of
reference designate like parts throughout the various
operations the spools are manually placed on and re
moved from the machines and must be manually placed
in and trucked from one machine to another.
Such
- views, the device embodying the invention ‘comprises a
barrel 7 formed of hard plastic tubular material or metal
U
of the length and diameter desired of the main body
spools are relatively large and, when filled with wool
strands, are quite heavy and bulky to handle and thereby 20 portion of the barrel. Press fitted internally of the op
posed ends of the barrel 7 is a cylinder shaped member
receive considerable abuse during the handling thereof
either from accidental dropping, from bumping the heads . Shaving an inner closed end wall 9 and a circumferen
tial flange 10 spaced inwardly of the opposed end of
of the spools against the frames of the machines during
said cylinder member. The closed end wall 9 may be
their removal or replacement or from throwing the
spools into the trucks by means of which they are con
veyed from one machine to another.~ >One of the pri
mary difñculties has been that the ends> of the barrels
25 formed integrally with the cylinder member 8 or may
be attached thereto by welding or the like as indicated
' at 11 and is provided with a circumferential peripheral
soon became displaced or bent with the result that the
edge of substantially the same diameter of said cylinderk
heads could not be supported in proper angular _relation
member ‘and ,which is dimensioned to have a press ñt
with the barrel or wererendered too loose for continued 30 internally of the adjacent ends of the barrel 7.
The
said cylinder member 8 is of :a length to provide a sub
There are various types of spools on the market, all
of which have attempted to overcome the above difli
' stantial, reinforced inner wall for `said barrel 7 to resist
the said endsjfrom being dented or collapsed-inwardly.
The flange 10 may be formed lintegrally with the cylin
barrel having the heads attached tothe opposed ends 35 der member 8 or may be secured thereto by welding
culties.
Some of these spools are provided with a wooden
thereof by centrally disposed clamp bolts which _enabled
in a manner similar vto the closed end wall 9.
~ The flange 10 is rprovided with a plurality of spaced
periodic tightening of the heads. It has been found
that during use and due to the abuse which such `devices
encountered, the ends of the Wooden barrels would either
split or the material thereof became displaced to such 40
beveled openings 12 throughout a circumferential path
as shown best in FIGS. 2- and 3 and is adapted to lie
within a shouldered recess 13 formed in the inner side
of the head 14 'as shown best in FIG. 3. The adjacent
an extent that the heads could norlonger be properly
end of said cylinder member 8 is adapted to extend out
wardly of the flange 10 as shown at 15 and to extend
inwardly of an opening 16 formed centrally of the head
Another difficulty has been that such barrels become
splintered to such an extent that individuals handling 45 14.
the spools often received severe injuries from slivers and
Overlying the outer surface of the head 14 is a disk 17
preferably formed of metal having a pivot pin 18 formed
further difficulty was encountered in being unable to
freely draw the woolen strands from the barrels.
integrally therewith, with said flange and pin being pref
angularly disposed relative to the barrel or be suñiciently
tightened.
To overïcome this difficulty other spools appeared on
the market having the barrel portion thereof -formed of
tubing to which the heads were attached by centrally
disposed relatively long interconnected sections of coil
erably formedV of steel or other similar hard, wear-resist
spring tensioning means which was designed to relieve ` "
vided with spaced openings similar to and aligned with
the head and barrel connections from shock- and'strain
as the result of the abuse they receive during _the use
of the spool. This type of spool did not solve the prob
lem for the ends of the barrel soon became bent and
displaced to such an extent that the heads not only
loosened but tilted to an undesirable angle and rendered
the spools impractical for use.
It, therefore, is one of the principal objects of the
present invention to provide a spool which will overcome
all of the above difficulties and which will be durable,
resistant to displacement, impact, chipping, bending or
splintering and having its head portions attached to the
spools in such manner as to prevent the heads from
becoming loose or angularly displaced during the use
thereof, which will not require periodic tightening and
which may be fabricated in a simple and inexpensive
ing metal. Fitted over the pin 18 is a spacer washer or
the like 19 which is secured to the outer surface of the
disk 17 by Welding or the like. The said disk k17 is pro
the openings'in the ñange 10 and is adapted to receive
rivets> or the like 20 which extend through similarly
formed aligned spaced openings in the head 14 to secure
l the parts in assembled relation with each other. The
inner ends of the rivets 20 are ñared outwardly to iit
vinternally of the tapered openings 12 in the flange lll with
the said ends in substantially flush relation with the inner
surface of said flange and are provided with outer en
larged heads overlying the disk 17.
' ’
The washerlike' member 19 has a shouldered central
surface 21 which causes the washerlike members 19 to be
of a thickness greater than the thickness ofthe outer heads
of the rivets so as to permit free rotation of the spool
, in its conventional support on spinning or carding ma
i chines or the like without hindrance from rotation by
said outer enlarged heads of the rivets. The head por
70 tions of the spool and the associated parts thereof, in
cluding the cylinder- member 8 and inner wall 9, while
Other objects 'and advantages of the invention will
manner.
_
l
become apparent from the following .description taken
y being rigidly attached to the respective ends of the barrel.
3,022,933
3
4
7 by frictionally pressing said cylinder members 8 and
to the construction shown in FIG. 3 and functions in a
end walls 9 into said ends and to a degree wherein the
similar manner.
adjacent outer edge surfaces of the barrel 7 engage with
the ilanges 1t) to provide a relatively intimate relation
to provide long inner bearing surfaces with the sleeves
The cylinder members are formed relatively long so as
therewith to prevent the wool strands or the like which
2S when and if the heads are tilted in response to impact
and the extent of yielding action of the coil springs are
are wound on said spool from becoming wedged inwardly
between said ends of the barrel and the ilanges 10 with
the result that they cannot be freely drawn from said
barrel.
controlled in accordance with the length of said cylin
der members to insure that they cannot be displaced out
wardly of theends of said sleeves 28 during the use of
'
While the head assemblies are provided with the cylin
der members 8 and end walls 9 which are relatively long
and press ñtted into the adjacent ends of the barrel 7,
they are inwardly biased relative to each other by means
of a rod 22 centrally disposed with respect to the barrel 7
and which extends through central openings 23 formed in
said end walls to a point spaced inwardly relative to. the
inner surfaces of the disks 17. The opposed endsv of said
rod 22 are provided with threaded sections 24 adapted
the spool.
’
However, in this instance the tapered cylinder members
8' and the associated tie rods and coil springs permit a
more free tilting movement of the associated heads in re
sponse to impact as well as preventing the heads Ifrom
becoming loose and requiring retightening during the use
ofthe spool. In this instance, while the heads and asso
ciated flanges 10' are permitted to more freely tilt in re
spouse to impact either from 4an outwardly or inwardly
to each receive a threaded nut 25. Inwardly between the
directed force, the sleeves 28 function to prevent the said
inner surfaces of the end walls` 9 and the inner Vsurfaces 20 ends of the barrel 7’ from splitting as has been usual with
0f» the nuts 25 and in surrounding relation with the adja-V
the prior art spools of> this nature and the Sleeves 28 fur
cent ends of the rod 22 there are provided coil springs 26.
ther function to resist inward bending or compression of
The tension of said springs is controlled by threading the
said end portions of the «barrel in a manner similar tothe
nuts inwardly ot the respective threaded ends of the rods
sleeves -8 shown in FIG. 3.
so as to set up a desired biasing eiîect upon the respec
Itis to be understood that heads similar to the heads
tive heads of the device. This is to overcome the tend
14, disks similar to the disks 17 and spacer washers simi
ency of said heads working loose and requiring retighten
larïto the spacer washers 19 are employed with the pres
ing during the use of the spool and is further. to resist - ent construction with the flanges -lìtl'flying within recessed
any tendency of the heads being displaced outwardly of.l
areas in the heads and with. the various parts being se~
the respective ends of the barrel 7 while yetl permitting 30 cured together by -rivets or the like in a manner similar
the said heads to yield in response to impact.
'
To insure that the nuts 25 do not loosen after once
to the construction of-FIG. 3.
It is pointed'out that the barrels 7 or 7' may be formed
of suitable plastic materials or metals as desired, all of
which are resistant to cracking or splintering.
being adjusted to introduce the desired 'tension'to the.
springs 26, the opposed ends 27- of the rod 22. are pref
erably flared over. While vthe heads 14. and the asso
ciatedv parts thereof are vdesigned to greatlyresistfimpact.
the cylindermemb'ers 8 serve as inner reinforcing means
for the respective ends of the barrel 7 while the coil
springs 26 serve to permit a limited yieldingy action there~
of in response to impact. and further prevent the heads 40
from becoming loose during the use of the spool.
`
From the foregoing description it will be seen that sim
ple, eñicient and economical means and method have
been provided for accomplishing all the objects and ad
vant'ag'esof the invention.~ Nevertheless, it should be ap»
parent that many changes in the details> of construction,
arrangement of parts and steps ofv the method may be
made without departing from the spirit of the invention
In FIG. 6 there is shown a slight. modilication wherein
as expressed in the accompanying claims.
the ends of the barrel 7 are provided with sleeves 28v pref~Having described my invention, I claim:
erably formed of steel or otherrigid metal and of- a diam
l.r A spool comprising la circular tubular barrel portion
eter such that- they are intimately. press litted` internally
of- relatively rigid «material having relatively llat end por
45
of the respective ends of the barrel 7. The sleeves 28> are
tions disposedin normal relation with the axis of the bar
of a considerable length so asto provide adequate protec
reL'a
pair of head portions >each having a recess on the
tion against the end areas of the barrel from being bent
inner
side
surface thereof, an opening centrally thereof
or otherwise dellected inwardly .and the outer ends there
and spaced openings extending therethrough in a circum
of are positioned in iiush relation with the adjacent ends
ferential path' surrounding said central opening, a cylin-'
of the barrel to further protect said ends in response to 50 der member of rigid material press fitted internally of
any tilting movement of theheads. In this instance the `
each of the ends of said main barrel portion and having
cylinder members 8’ arev formed so as to havey slight in
Aa closed inner end, a flange of a` diameter greater than
ward taper with respect to the inner surfaces of the sleeves
said cylinder members on each of said cylinder mem-bers
2_8y so as> to provide a tapered clearance 29 of approxi 55 each having an inner side surface internally engaging the
mately no greater than 5° between said cyli'uder'mernbers
respectively relatively ñat ends of the barrel portion as the
8’ and the sleeves 28 adjacent the inner end thereof but v result of press fitting said cylinder members into the ends
theropposite or outer portions of said members 8' are so
of said barrel portion, said respective flanges lying within
controlled dimensionallyV so as to havea relatively close
the recesses ofss'aid respective head portions and having
lit within the outer ends of said sleeves 28. .
The inner ends of the tapered cylinder members 8' are
60 their inner surfaces in llush relation with :the inner sur
faces of said head portions, said flanges being spaced in
cach provided with a solidwall 9’ in` a manner similar
wardly from the adjacent outer ends oi the cylinder mem
to the construction illustrated inFIG. 3A with> Vthe excep
bers thereby providing protruding outer ends extending
within the central opening in the respective head portions,
stantially equal to the inner diameter> of the, cylinder 65 said ilanges having spaced openings therein in aligned re
tion that the said end` walls 9f arel ofv a diameter sub
lation with the openings in the head portions, disks over
members 8’. The said cylinder members` 8', on the oppo
lying the outer surfaces of said head portions and having
site ends thereof are provided with a. protruded end 15’
spaced openings aligned with the openings in said head
and with a flange 10' similar to the construction of.. FIG.
portions,
said disks having a pivot pin extending outwardly
3. The remaining construction of the heads are similarl
of the central portions thereof in 'aligned axial relation
to that shown in FIG. 3. The saidv modiiication also 70 with the axis of the main barrel portion, means extending
includes a tie rod 22’ extending through central openings
through the aligned openings in said flange, head portion
in the inner walls 9’ and having coil springs 2.6’V secured
thereon by knuts'ìâ’ which are- threaded onto the respec
and disks for securing them together, said inner closed
ends of said cylinder members having axial openings
tive threaded ends of the tierod 22’ in a manner similar 75 therein, a single rigid rod extending axially of the barrel
3,022,962 »
5
and lying within the central opening in the respective head
and through said axial openings and having threaded por
tions on the opposed ends thereof extending and 'lying
Within said respective cylinder members with the ends
thereof spaced from the adjacent inner surfaces -of the
portions, said flanges having spaced lopenings therein in
aligned relation with the openings in the head portions,
disks formed of stainless steel overlying the outer surfaces
of said head portions and having spaced openings aligned
with the openings in said head portions, said stainlesssteel disks each having a pivot pin extending outwardly
of the vcentral portions thereof in substantially aligned
threadedly connected with each of said opposed’ ends of
axial relation with the axis of the main barrel portion,the rod and being tightened to engage the opposed ends
of each of said coil springs and being adapted to exert a 10 means extending through the aligned lopenings in said
flange, head portion and disks for securing them together,
compressing tension force thereon to hold said flanges on
disks, a coil spring on each or’ the threaded ends of said
rod each having one end in engagement with the respec
tive inner closed end of the cylinder member and a nut
said cylinder members in intimate contact with the ends
said inner walls of said cylinder members having the cen
of said barrel.
tral openings therein having a single rigidrod extending
'
axially of said barrel portion through said central open
2. A spool comprising a circular tubular barrel portion
of relatively rigid material having relatively flat end por 15 ings, said rod having threaded portions on the opposed
ends thereof extending and lying within said respective
tions in normal relation with the longitudinal axis of the
cylinder members with the ends thereof spaced from the
barrel, a pair of disk-like head portions each having a
adjacent inner surfaces of the disks, a coil spring on each
recess on the inner side surface thereof, spaced openings
of -the ends of -said rod lying within said cylinder mem
extending therethrough in a circumferential path and a
central opening therein, a cylinder member of rigid ma 20 bers each having one end in engagement with the re
spective inner wall of the cylinder member and an ad«
terial having a rigid closed inner end wall press ñttcd in
ju-stable nut threadcdly connected with each of said op~
ternally of each of the ends of said main barrel portion,
posed ends of the rod and engaging the opposed ends of
a ñange of rigid material on each of said cylinder mem
each of said coil springs and being adapted to exert abers extending outwardly substantially normal to‘the axis
of said member and engaging the respective relatively 25 compressing tension thereon to retain said flanges in en
gagement with the fiat ends of the barrel portion.
ilat ends of the barrel portion and lying -within the re
4. A spool comprising a circular tubular barrel portionl
cesses of said respective head portions and' in substan
of relativelyrigid material of a controlled diameter and
tially flush relation with the inner surfaces of said head
having relatively flat end portions in substantially Onormal
portions, said ñanges being spaced inwardly from the ad
jacent outer ends of the cylinder members with said >ends 30 relation with the longitudinal axis thereof, a metall-ic cir-V
cular cylinder member extending’a substantial distance
protruding outwardly and lying within the central open
within each ofthe opposed ends of said tubular barrel
ing in the respective head portions, said flanges having
portion, a metallic ilang'e of a diameter greater >than thespaced openings therein in aligned rela-tion with the open
diameter of the barrel carriedA by each of said cylinder
ings in the head portions, metallic disksoverlying'the
outer surfaces of said head portions and having spaced 35 members at a locationv spacedY inwardly of the-outer ends
openings aligned with the openings in said head portions, ` of said cylinder -members and `in _relatively intimate'.en~_
gaging relation with therespective flat ends of the barrel,
said disks having a pivot pin extending outwardly of the
portion, said spacing inwardlyof said ilangesbeing such
central portions thereof in aligned axial relation with the
as to cause the ends of said cylinder members to protrude
axis of the main barrel portion, washerlike. members posi
tioned on said pins and secured in engaging relation with 40 outwardly of the flanges, each of said cylinder members
having a rigid Wall extending transversely adjacent the
the respective disks, means extending through. the aligned
inner ends. thereof and eachhaving a centralopening
openings in said flange, head portion- andidisks for secur~
therein, a single rigid rod extending axially of said barrel
ing them together, said inner closed ends of said cylinder
through said respective central openings ,in said rigid walls
members having axial openings therein, a single rigid
rod extending axially of said barrel portion through said 45 of said cylinder members and having threaded portions on
the opposed ends thereof extending and lying within each
axial openings and having threaded portions on the ,op
of said cylinder members, an adjustable nut on each of
posed ends thereof extending and lying within said respec
said threaded end portions, a coil spring on each of said
tive cylinder members with the ends thereof spaced from
the adjacent inner surfaces of said disks, a coil spring on
each of the ends of said rod within said cylinder mem
bers each having one end in engagement with the respec
tive inner closed end of lthe cylinder member and an ad
justable nut threadedly connected with each of said op
respective'end portions of the rod internally of said cylin~
50
der members and located between said nuts and the in'nei~
side surfaces of the rigid walls of the cylinder members, a
pair of circular head portions of a diameter greater than
the flanges each having a recess on the inner side surface
thereof adapted to receive the respective iianges with the
posed ends of the rod and engaging the opposed ends of
each of said coil springs and being adapted to beadjusted 55 inner side surfaces of said flanges lying in substantially
to exert a compressing tension thereon -to hold said
flanges on said cylinder members in intimate contact with
flush relation with the inner side surfaces of said head por«v
tions and each having a central opening into which the ends
the ends of the barrel.
of the cylindrical members which protrude outwardly of
. ,
_
,
3. A spool comprising a circular tubular lbarrel portion
the flanges extend, a reinforcing disk -of a diameter less
of relatively rigid material having relatively normally d-is. 60 than the diameter of the head portions overlying each of
the outer surfacesrof said head portions and having a pivot
posed ñat end portions, a pair of circular >disk-like head
pin extending outwardly thereof in substantially coaxial
portions of rigid material each having a recess on the in
relation with the axis of the barrel portion with the inner
ner side surface thereof, spaced openings extending there
surfaces of said disks lying in adjacent relation with the
through in a circumferential path and a central opening
therein, a cylinder member of rigid material press fitted 65. protruding outer ends of each of the cylinder members,`
said disks, head portions and ñanges having a plurality of
internally of each of the ends of said main barrel portion
spaced aligned openings therein and means extending
and each having a rigidtransversely extending wall with
through said openings for securing said parts together with
a central opening therein, an outwardly extending flange
the inner ends of said means lying in substantially llush
on each of said cylinder members engaging the respec
l
f
tive relatively fiat ends of the barrel portion and lying 70 relation with the inner surfaces of the disks.
5. A spool comprising a circular tubular barrel por
within the recesses of said respective head portions with
tion of relatively rigid material of a controlled diameter
the inner surfacesthereof in substantially tlush relation
with the inner surfaces of said head portions, said ñanges ‘ and having relatively hat endgportions in substantially
normal relation with the longitudinal axi_s__thereof,H a cir
being spaced inwardly from the adjacent outer ends'of` the
cylinder members with said ends protruding outwardly 75 cular cylinder member extending a substantial 'distance
3,029,962
7
8
within each of the opposed ends of said tubular barrel
of the barrel portion with the inner surfaces of said
portion, a ñange of a diameter greater than the barrel
portion carried by each of said cylinder members at a lo
disks lying in adjacent relation with the outer ends of
cach of the cylinder members, said disks, head portions
and flanges having a plurality of spaced aligned open
cation spaced inwardly of the outer ends thereof in rela
tively intimate engaging relation with the respective dat 5 ings therein, means extending through said openings for
ends of the barrel portion, said spacing inwardly of said
securing said parts together with the inner ends of said
Iianges forming protruding outer ends on said cylinder
means lying in substantially ñush relation with the inner
surfaces of Vthe disks and a sleeve of rigid material press
members, each of saidv cylinder members having a rigid
wall extending transversely of the inner ends thereof and
fitted within 4the respective ends of the barrel portion
each having a central opening therein, a single rigid 10 between the inner surfaces of said ends and the respective
rod extending axially of said barrel through said respec
cylinder members, said outer ends of said sleeves being
in substantially ’flush relation with the respective adja~
tive central openings in said rigid walls of said cylinder'
cent outer ends of the barrel portion.
mem-ber and having threaded portions on the opposed
7. A spool comprising a circular tubular lbarrel portion
ends thereof extending and lying within each of said cyl
inder members, an adjustable nut on each of said «threaded 15 of a relatively rigid material of a controlled diameter and
having relatively ñat end portions in substantially normal
end portions, a coil spring on each of said respective
relation with the longitudinal axis thereof, a cylinder
end. portions of the rod located within »the cylinder men“,
member of rigid |material extending a substantial distance
bers and between saidL nuts and the inner rigid walls of
within each of the opposed ends of said tubular 'Darrel
the cylinder members, a pair of head portions each hay»
ing a recess on the inner surface thereof adapted to re 20 portion,Y a ñange vcarriedjby each of said cylinder mem
ceive the respective ilanges with the inner surfaces of
bers, at a location spaced inwardly of the outer ends there
said ñanges lying in substantially Hush relation with the
of and having a ñat inner surface in a relatively intimate
inner surfaces of said head portions and each having a
engaging relation with the respective dat ends of the
barrel portion, cach of said cylinder members having a
central opening into which the protruding outer end por
rigid wall extending transversely thereof and each having
tions of the cylinder members extend, a disk of a diam~
-eter greater than the barrelA overlying each of the outer
surfaces of said head portions and having a pivot pin ex
tending outwardly thereof in a substantial-ly co-axial re
a central opening therein, a single rigid rod extending
member positioned on each ofj said pivot pinsî and in sc
oured _relation with 4the outer surfaces of said respective
eachA having a recess on the inner surface Ithereof of a
means
relation with the inner surfaces of said head portions
axially of the barrel through said respective central open
ings in said rigid walls of said cylinder members and
having> threaded portions on the opposed ends thereof
lation with the axis of the barrell portion with the inner
surfaces of,v said disks lying in adjacent relation with the 30 extending and lying within each of said cylinder members,
an adjustable nut on each of said »threaded end porouter ends` o_f each of the cylinder members„ said disks,
head. Portions and flanges having a plurality 0f spaced
tions, a coil spring on each of said respective end poraligned openings therein, means extending throughv said
tions of the rod located inwardly of said cylinder mem
openings for securing said parts together with the'inner
bers and between said nuts and the rigid walls of the
endsn of said means lying in substantially flush relation
cylinder members, a pair of circular head portions of
withl the inner` surfaces of the disksl and a washerli‘ke
_rigid material of a diameter greater than the ñanges
diameter substantially equal to the diameter of the
disks and being of a thickness such that its outer sur
flanges adapted to receive the respective flanges with the
face lies in a plane outwardly ofv the, outer ends of> said 4:0 inner surfaces of said flanges lying in substantially flush
6. A spool comprising. a circular tubular barrel, por
tion of relatively rigid material of a controlled diam
and each having' a central> opening therein into which
the protruding outer ends of the cylinder members ex
tend,V a disk of a diameter less than the diameter of the
head portions overlying each of the outer surfaces of
eter and having relatively dat end portions in substan~>
tially normal'relation with the longitudinal axis thereof,
a cylinder member of rigid material extendingA a substan
said head portions and having a pivot pin extending
tial distance within each of the opposed ends of said
outwardly thereof in substantially co-axial relation with
tubular barre-l portion, a Harige, carried by eachl of said
the axis of the @barrel portion with the inner surfaces
cylinder members at a location spaced inwardly ofthe
of said disks lying in adjacent relation with «the outer
outer ends thereof in relatively intimate engaging 'rela 50 ends of each of the cylinder members, said disks, head
tion with the respective dat ends of the barrel portion,
portions and flanges having a plurality of spaced aligned
said> inward- spacing of said flanges forming protruding
openings therein, means extending through said openings
outer ends on said cylinder members, each- of said cylin
for securing said parts together with the inner ends of
der members having a rigidk wall extending transversely
said means lying in substantially ñush relation with the
of the inner endsV thereof and each havinga central open 55 inner surfaces of the disks and a sleeve of rigid material
ing therein, a single rigid rod extending axially of the
press ñtted within the respective ends of the barrel por
barrel through said respective» central openings in said
tion «between the inner surfaces of said ends and the
:rigid walls of said cylinder members and having threaded
respective cylinder members, said outer ends of said
portions on the opposed ends thereof extending and ly
sleeves being in substantially flush relation with the respec
ing within each of said cylinder members, an adjustable
tive adjacent outer ends of the barrel «portion and said
nut on each of said threaded end portions, a coil spring
on each of said respective end portions of the rod lo
cylinder members being tapered inwardly relative to the
respective sleeves to provideI a tapered surface between
cated inwardly of said cylinder members and between
said cylinder members and said sleeves with the outer
said nuts and the inner rigid walls of the cylinder mem
end portions of said cylinder members being of substan
bers, a pair of rigid head portion of a diameter larger 65 tially the same diameter as the inner diameter ofthe
than said flanges each having a recess on the inner sur
outer ends of said sleeves.
face thereof adaptedto receive the respective ñanges with
the inner surfaces of said flanges lying in substantially
References Cited in the tile of thispatent
llush relation with the inner surfaces of said head por~
UNITED STATES PATENTS
tions, said head portions having -a central openingY into 70
which the protruding ends of the cylinder members ex
2,425,821
2,690,312
tend, a disk overlying each of the outer surfaces of said
head portions and having a pivot pin extending outward#
lyl thereof in- substantially `cti-axial relation with the axis
.
`
Rancourt ____________ __ Aug. 19, i947
Watson _'. __________ __ Sept. 28, 1954
FOREIGN PATENTS
797,926 '
GreatBritain _' ______ -..___ July-9, 1958
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