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Патент USA US2410815

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5-1;
H‘, 1946.,
K. A. FALCONER
»
2,430,815
METHOD AND APPARATUS FOR APPLYING ASBESTOS TO WIRE
Filed Oct. i0, 1942
'24
4 She'ets-Sheet 1
NW. 12, 1946.
K. A. FALCONER
2,410,815
METHOD AND APPARATUS FOR APPLYING ASBESTOS TO WIRE
Filed Oct. 10, 1942
‘ 4 Sheets-Sheet '2‘
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NOW 12, 1946METHOD
K. A. FALCONER
2,410,815
APPARATUS FOR APPLYING ASBESTOS To‘wIRE
Filed Oct. 10,‘ 1942
4 Sheets-Sheet s
INVEN'I’OR
.
Nov. 12, 1946.
2,410,815‘
- K._ ‘A.’ FALCONgER
‘METHOD AND APPARATUS FOR APPLYING ASBESTOS TO WIRE
Filed Oct. 10,- 1942
9m.
4 Sheets-Sheet 4
N__NN_
COER,
Patented Nov. 12,1946
2,410,815
iUNi'i'ED STATES ‘PATENT OFFICE
2,410,815
METHOD AND APPARATUS FOR APPLYING
ASBESTOS ‘1'0 WIRE,
Kenneth A. Faiconer, Auburn, Mass.
Application @ctober 10, 1942, Serial No. 461,596 '
'
'
8 Claims.
(Ci. 57_5)
2
‘ ' The present invention relates to an improved
method and apparatus for applying ?brous mate
rial to an advancing wire and more particularly
to applying asbestos ?bers to an electric conduc
.
tor and the like, an important object being to
provide a practical method and apparatus for
winding a ?eece of asbestos ?bers about an ad
vancing conductor immediately after such a ?eece
of ?bers has been stripped from the doffer roll
of a conventional form of carding machine. An 10
important object of the invention is to provide
eifective means for coiling a ?brous ?eece around
an advancing conductor without destroying the
27, 1938. The present invention aims to improve
over this practice by preserving‘ the parallel
relationship of the ?bers in the ?eece imparted
thereto by the usual clothing of the doifer roll
of the carding mechanism.
,
-
As will be more fully apparent as the descrip
tion proceeds, the present invention provides an
improved method involving advancing a conduc
tor lengthwise while continuously feeding . a
sheet-like ?eece of loosely associated substan
tially parallel ?bers of asbestos in a direction ap
proximately normal of the line of travel of the
conductor, exerting a combined longitudinal and
centripetal force on the ?eece whereby it is both
normal disposition of ‘the ?bers in the ?eece
which are arranged in substantially parallel rela 15 compressed circularly and advanced longitudi
nally, but being supported out of contact with
tion by the carding machine, it being a particular
the advancing wire, whereupon the thus applied ,
object of the present invention to preserve the
parallel relationship of the ?bers. In a practical ‘ ?eece is further compressed and condensed
directly around and in contact with the wire in
sense, this is regarded of importance since the
density of the ?eece is maintained by virtue of 20 such a way that the substantially parallel asso
ciation of the ?bers of the ?eece is not disrupted
the fact that the ?bers are not disentangled.)
A particular problem encountered in the wrap
to any material extent, thus the density of the
ping of a ?eece about an advancing wire or con
?eece is not lessened by ?ber disentanglement as '
contemplated in the above mentioned Obermaier
ductor is involved because such an asbestos
?brous ?eece coming from a carding machine is 25 patent. The invention also consists further in
the provision of a novel combination of mutually
inherently weak and incapable of withstanding
interdependent instrumentalities e?ective to
any substantial tension. To this end I aim to
carry out the method above described.
interpose conveying means between the do?fer
For complete understanding of the invention,
roll of the carding engine and a hollow rotary
cone which is adapted to coil the ?brous ?eece 30 reference should be made to the accompanying
drawings, the following detailed disclosure and
around the conductor.
.
the appended claims.
It is broadly old in the prior art relating to
In the drawings:
means for covering electric conductorsto pro
Figure 1- is a plan view of the principal parts of:
vide means for transferring a ?brous sheet-like
apparatus for carrying out the novel method;
?eece‘ of cotton directly from a carding machine
Figure 2 is a front elevation thereof;
to a rotatable device adapted to apply such ?eece 35.
Figure 3 is a section on line III-HI of Fig
to the conductor. Such idea is broadly shown in
ure 1;
'
an ,old patent granted to John Robinson, No.
Figure 4 is a plan view similar to Figure l illus
529,411, dated November 20, 1894, but so far as
I am aware, the apparatus of the Robinson patent 40 trating a modi?cation;
has never been successfully demonstrated and
Figure 5 is a front elevation of a part shown
. experience has shown that apparatus which
works satisfactorily with cotton will not neces- '
in Figure 4;
,
Figure 6 is a vertical section taken on line
sarily suit ‘when handling asbestos ?bers.» For
VI-VI of Figure 41
>
.
handling asbestos ?bers I deem it highly de-, 45 Figure 7 is a view similar to Figure 3 illustrat
sir-able to interpose transferring means between
ing a modi?cation including pneumatic means
the carding machine and the device which ap
for buoyantly supporting the ?brous ?eece;
plies the ?eece to the conductor. It has been
Figure 8 is a view similar to Figure 2,ishowing
heretofore proposed to strip asbestos ?bers from
‘the front elevation‘ of the parts illustratedv in -‘
vthe do?er roll of a carding machine to destroy 50 Figure 7.
their parallelism and to drop such ?bers in a
Referring in detail to the drawings, a cable or
haphazard manner in such a way that they be
electric conductor wire'such as indicated at w in
come entangled and then' coiled around an ad
vancing conductor._ Such a machine is shown in
Obermaier Patent No. 2,131,598, dated September
the drawings is adapted to be withdrawn from
a supply reelill by meansyof a draw-oil drum
12 carried by a shaft i4 driven from any suitable
2,410,815
source of power. The drum I2 is effective to feed
or advance the wire or cable w longitudinally in
a continuous manner in juxtaposition to the
peripheral surface of the do?er roll [6 of a con
ventional form of carding mechanism which is
provided on its exterior with conventional ?ne
wire teeth I8 known as the carding clothing.
The carding machine has delivered thereto a sup
ply of asbestos ?bers in suitable form.
This
4
verges in the direction of travel of the advancing
wire. The rotary action of this whirler die is
effective to compress the ?bers of the ?eece cir
cularly around‘the exterior of the advancing con
ductor and also to in?uence the longitudinal mo
tion of the ?bers covering the wire. In Figure 3
of the drawings the stipple showing is an attempt
to illustrate the action of stripping the ?eece
from the‘do?er roll and supporting it while en
?brous supply is acted upon in the conventional 10 route therefrom over the transfer member 40 to
the rotating hollow cone which is effective to
cause an initial compression and impart at least
some degree of longitudinal feeding movement
to the ?brous mass. It is to be understood, how
‘ ?eece is stripped from the doifer roll i6 by a con 15 ever, that the feeding movement of the ?brous
mass, once it is arranged in wrapped relationship
ventional form of carding machine comb 20 se
to the advancing conductor, is effected jointly
cured to the outer ends of arms 22 carried by a
by the cooperation of the rotating cone, and the
shaft 24 which is oscillated by a known form of
rotating whirler die 46 in cooperation with the
vibrating mechanism which is enclosed in a hous
ing 26. Since this vibrating mechanism consti 20 feeding movement imparted by the rotating cap
stan l2.
tutes no part of the present invention,’ it is not
In the modi?cation illustrated in Figures 4, 5
further illustrated, su?ice to say, that motion is
and 6, the parts cooperate in substantially the
transmitted thereto by a pulley 28 operably. con
same manner as above set forth with the excep
nected in'any suitable manner with the carding
tion that in this embodiment of the invention.
mechanism drive. I
'
the means for transferring the fibrous ?eece from
A hollow cone-like member 30 is secured to the
the doffer roll l6 to the rotating cone 30 com
extremity of a hollow sleeve 32 which is rotatably
prises a conveyor belt 5|]- which is trained around
mounted in a suitable bearing 34, the sleeve being
supporting pulleys 52 and 54. Mounted on the
continuously rotated by a pulley 36 connected in
any suitable manner with the drive for the card 30 supporting shaft for the pulley 54 there is also a
pulley 56 which is connected by a crossed belt 58
ing machine. As the carding machine is oper
with a pulley 59 secured to the sleeve 32. As thus
ated it will be understood that the comb 20 above
arranged it is apparent that as indicated by the
referred to will be intermittently vibrated and
arrows in Figure 6 when the cone rotates clock
the cone will be continuously revolved. The
sleeve 32 and cone 30 are provided with an 35 wise the pulleys 52 and 54 will be driven in coun
terclockwise direction, thus causing the upper
aligned axial passageway 38 through which the
stretch of the conveyor belt 50 to travel inra
wire or cable 10 is advanced longitudinally. In‘
proper direction from a region adjacent the doffer
the embodiment of the invention shown in Fig
manner by the carding machine so as to produce
a sheet-like ?eece of asbestos in such a way that
the elemental ?bers thereof are arranged in sub
stantial parallelism. This asbestos sheet-like
roll toward the rotating cone 30 so as to thus
ures 1 to 3, inclusive, as the ?eece is stripped from
the doffer roll [8 it is received by a transfer mem 40 effectively support the ?imsy ?brous ?eece and
ber 40. Thus there is no haphazard dropping
of ?bers as taught by the Obermaier patent, nor
positively feed it into a position for cooperative
engagement with the rotating cone.
In the modi?cation shown in Figure 7 the parts
is there any disentanglement, it being a particu
are arranged as in Figure 3, but in addition there
lar feature of the present invention to provide
an operative means for transferring the ?eece 45 to, I here provide pneumatic means for buoyantly
supporting the ?eece while it is being transferred
with the ?bers thereof in the same parallel rela
from the conveyor member 40 to the underside
tionship which they occupy while on the do?er
of the rotating cone 30. To this end I have shown
roll of the carding machine. In this embodiment
in this ?gure a plurality of parallel pipes 50 which
of the invention the transfer member 40 takes
the form of a rotating‘ cylinder of small diameter 50 are approximately coextensive in length with the
cone 30, the pipes being connected with a header
which turns in a'direction opposite to the direc
62 leading to a suitable sourceof compressed
tion of rotation of the do?er roll It? as will be
air, the upper portions of the pipes being per
apparent from the arrows in Figure 3. This
forated so as to permit the emission of air jets
transfer member 40 carries a spur gear 42 which
meshes with a similar gear 44 secured to the 55 64 therefrom. In this modi?cation I have also
illustrated an air pipe 56, the outlet ori?ce 68
sleeve 32. Thus it'is apparent that the transfer
of which is in the form of a nozzle located near
member 40 rotates in a direction opposite to the
the butt or large end of the cone 30. The pipe
direction of rotation of the cone 30 as indicated
66 is connected with the same source of supply
by the arrows in Figure 3.
The rotary motion of the transfer member '0 60 as that to which the pipes B0 are connected and
the function of the jet of air discharged from the
delivers the ?eece to the lower portion of the
nozzle is to assist in advancing the flimsy ?brous
rapidly rotating cone 30. The action is such that
?eece longitudinally along the rotating cone 30.
the frictional drag imparts a centripetal force to
It is to be understood that the mechanism de
the ?bers of the ?eece, thus tending to draw
them inwardly toward the axis of rotation of the 65 scribed can be operated without the use of the
pneumatic means shown in the modi?cation of
cone while at the same time the rotary motion
Figures 7 and 8 and the use of this pneumatic
of the cone tends to advance the ?eece longitudi
nally in the same direction as that in which the
conductor is traveling under in?uence of the wire
70
Located in juxtaposition to the small end of
the cone 30 there is rotatably mounted a whirler
die 45 mounted in suitable bearings and driven
from any suitable source of power. This whirler
die has a central opening 48 therein which con 75
feeding action exerted by the capstan i2. _
means is contemplated chiefly when applying
relatively heavy fibrous coating to the advancing
conductor.
While I have described quite precisely a pre
ferred method and apparatus, the practicability
of which has been demonstrated in practice on a
commercial scale, it is not to be construed that I
am limited thereto since various modi?cations
2,410,815
,
5
v
>
may be made by those skilled in the art without
departure from the invention as de?ned in the
appended claims.
'
’
I claim:
_
6 .
, and a rotary die havinga central bore therein
converging in the direction of travel of the con
ductor and e?ective to compress the ?bers of the
?eece about the conductor whereby the substan
tially' parallel association of- the ?bers of the
?eece is not disrupted to any material extent byv
1. In the manufacture of insulated electric
conductors the method which comprises ad
vancing a conductor lengthwise, continuously
disentanglement.
'
feeding a ?eece of loosely associated substantially
5. Apparatus for applying asbestos ?ber to an
parallel ?bers of asbestos in a direction approxi- _' electric conductor comprising means for advanc
mately normal to the line of travel of said con 10 ing the conductor lengthwise, carding means for
ductor, exerting a combined longitudinal and cen
tripetal force on the ?eece whereby it is com
pressed circularly and advanced longitudinally
While supported out of contact with the advancing '
wire and then circularly compressing the thus
condensed ?brous mass directly around the wire
whereby the substantially parallel association of
‘forming a ?eeceiof asbestos whose ?bers are dis- _
posed in substantially parallel relation, means in
terposed between the carding means and the ad
vancing conductor for positively supporting the
?eece as it is delivered by said carding means, a
hollow rotary member through which the con-,
ductor is fed e?‘ective to c'oil, the ?eece and ad
the ?bers of the ?eece is not disrupted to any ma
vance it longitudinally about the advancing con
terial extent so that the density of the ?eece is
ductor while out of contact therewith, and means
not lessened by ?ber disentanglement.
20 for compressing the ?brous mass of the ?eece
2. Apparatus for applying asbestos '?ber to an
about the advancing conductor. ‘
electric conductor comprising means for advanc
6. Apparatus for applying asbestos ?ber to any
ing the conductor lengthwise, carding means for
electric conductor comprising means forv advanc
forming a ?eece of asbestos whose ?bers are dis
ing the conductor lengthwise, carding means for
posed in substantially parallel relations, a means
forming a ?eece of asbestos whose ?bers are dis
interposed between the carding means and the
posed in substantially parallel relation, a posi
traveling conductor for supporting and trans
tively driven conveyor means interposed ‘between
versely feeding the ?eece as it is delivered by the
carding means, a hollow rotary member through
the carding means and the advancing-conductor
for supporting the ?eece as it is being delivered
which the conductor'is fed effective to coil the 30 by said carding means, a hollow rotary member
’ ?eece and advance it longitudinally about the
through which the conductor is fed effective to
advancing conductor while out of contact there
’ coil the ?eece and advance it longitudinally
with, and means for compressing the ?brous
about the advancing conductor while out of con
?eece about the advancing conductor.
'
tact therewith, and means for compressing the
3. Apparatus for applying asbestos ?ber to an 35. ?brous ?eece'about the advancing conductor.
electric conductor comprising means for. advanc
7. Apparatus for applying asbestos ?ber to an a
ing the conductor lengthwise, carding means
electric conductor comprising means for advanc
for forming a ?eece of asbestos whose ?bers are
ing the conductor lengthwise, carding means for -
disposed in substantially parallel relation, a
forming a ?eece of asbestos whose ?bers are dis
means interposed between the carding means and 40 posed in substantially parallel relation, means
the traveling conductor for supporting and trans
for stripping the?eece from the carding means,
versely feeding the ?eece as it is delivered by the
and pneumatic means for maintaining a stratum
carding means, a hollow rotary memberthrough
of air below the advancing conductor effective to
which the conductor is fed effective to coil the »‘ buoyantly support the ?eece. as it is being stripped
?eece and advance it longitudinally about the
from said carding means.
advancing conductor while out of contact there
8. An apparatus'of the class described comwith, and a rotating die having a converging bore - prising, means for longitudinally advancing a
effective to compress the ?brous ?eece about the
wire, means for feeding a ?eecelof loosely asso
advancing conductor.
'
_
1
ciated substantially parallel ?bers in a direction
4. Apparatus for applying asbestos ?ber to an 50 approximately normal to the line of travel of
electric conductor comprising means for advanc
said wire, a rotary hollow member through which
ing the conductor lengthwise, carding means for
the wire passes and which is effective to coil
forming a ?eece of asbestos whose ?bers are dis
said ?eece and advance it longitudinally, means
posed in substantially parallel relation, transfer
for pneumatically supporting the ?eece while it
means for positively feeding said ?eece trans 55. is en route to said hollow member and rotary
versely of the line, of travel of said conductor, a
means for compressing the ?brous ?eece about,
hollow rotary cone through which the conductor
the wire as it emerges from said rotary hollow
travels e?’ective by its rotary motion to coil the
?eece received from the "transfer means and to
exert a longitudinal feeding movement thereto,
member.
'
KENNETH A. FALCONER.
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