close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405908

код для вставки
Aug. 13, 1946.
A. E. slLco'x '
v
.
2,405,908‘
BEAM DRIVING MECHANISM FOR SLASHER
' _ Filed April 18, 1944-
s Sheets-Sheet 1
>
Aug. 13, 1946. '
I
A. E. slLcox
' 2,405,908
BEAM DRIVING MECHANISM FOR SLASHER
ZFil-ed April 18, 1944
_
Sheets-Sheet‘ 2
Aug- 13, 1946;
A. E. svuQcoX'
'
M35308
BEAM DRIVING MECHANISM FOR SLASHER
‘ Filed April 18, 1944
.3 Sheets-Sheet s
Patented Aug. 13, 1946
UNITED STATES’
ATENT OFFICE
2,405,908
BEAltI DRIVING MECHANISM FOR SLASHERS
Arthur E. Silcox, Biddeford, Maine, assignor to '
Saco-Lowell Shops, Boston, Mass, a corpora
tion of Maine
Application April 18, 1944, Serial No. 531,583
9 Claims.
(01. 28—-39)
1
2
As is well understood by those familiar with
the sizing machines known as “Slashers,” the
Fig. 3 is a vertical, sectional view taken approx
imately on the line 3—3, Fig. 1.
Preliminary to a detailed description of the
construction shown in the drawings, it may be
pointed out that this invention proposes to solve
the problem above described by providing two
friction mechanisms for driving the loom beam,
one through a considerably higher speed range
than the'other, and to devise means for automati
callv shifting the drive from one mechanism to
the other at an intermediate point in the building
of the yarn body on the beam. Thus the slip and
the resultant amount of heat created and of Wear
produced on the friction surfaces, will be main
tained within reasonable limits in both mecha
nisms.
Referring ?rst to Fig’ 1, the 100m beam is in
dicated at 2, supported on an arbor 3, one end
of which extends loosely into the driving shaft
4, while the other end is mounted in the usual
size and squeeze rolls in the size box revolve at
a constant speed and, consequently, pull yarn
forward from the creel at a constant rate. The
delivery roll or drag roll at the opposite end of
the machine is connected with the driving
mechanism for the rolls associated with the siZe
box so. that it takes up the yarn at exactly the
rate at which it is delivered by the size rolls. 10
However, the loom beam on which the yarn is
wound immediately after leaving the delivery roll
must revolve at a constantly decreasing speed
as the diameter of the yarn body on it increases,
For this reason, while the size and delivery rolls 15
are positively driven, the loom beam is driven
through a friction mechanism so. arranged that,
‘
as the pull exerted on the yarn by it tends to increase with an increase in the diameter of the
beam, the friction mechanism yields or slips 20
sufficiently to prevent the loom beam from remanner in a hole in a Shaft supported at the 0D
volving any faster than is necessary to take up
posite side of the machine. The arbor carries an
the yarn fed to it by the delivery roll.
arm 5 arranged to engage a stud 6 secured in a
In such an arrangement there is Very little
face plate 1 which is ?xed on the driving shaft
slippage in the friction driving mechanism for a 25 4, these connections serving to revolve the beam
time immediately after the winding of the yarn
in unison with its driving shaft.
on the loom beam starts, but as the yarn body
The usual mechanism for revolving this shaft
gradually builds up, the speed of the beam arbor
comprises a gear 8, Figs. 1 and 2, meshing with
slows down, with a corresponding increase in the
another gear l0 fast on a shaft l2v and driven
amount of slip in the friction mechanism,
30 by a pinion i3 on the shaft M, Fig. 2. This
The modern tendency to use beams with larger
Shaft t2 drives the delivery roll 9 and its driving
heads, and thus to build up yarn bodies on them
pinion i3 is connected with the mechanism for
of greater diameter, creates a, condition in which
driving the size rolls at the same surface speed
the slippage becomes very high as the winding
as the delivery roll, for the reasons above de
operation on the beam nears completion, with 35 scribed-
_
the result that the friction mechanism overheats
Keyfed _t0 the Shaft 4 are the hub‘ sectlon? of
and the friction plates are subjected to excessive
two fnctlon disks '5 and '6' The geat' 8' how"
wean
.
.
.,
The present Invention. qeals Wm? the problem
ever,
revolves freely on igiese hub SeCt]l0nS,1atl'éd
it carries in rotation wit it two circu ar p a s
a- and I), both lying close to the inner surfaces
presented by these conditions and it aims to de- 40
t1
f _ t.
1 t
'5
d '5 O t
vise a driving mechanism for the loom beam in
Cir 16 respectlve nc Ion p a es an
'u I
which the tem
, _
_
perajtut'es ainfi rate of Wear crfeaJPed
side the latter plates are two additional disks i1
and 18 which also lie close to the outer surfaces
in it will be held within-entirely reasonable limits.
of the respective friction plates |5 and m and
The nature of the mventlon will be Teadlly 45- are connected with the edges of the respective
understood frem the following description When
plates 11 and b to revolve with‘ them. These out
read in connection With' the accompanying draWside disks have hub sections revolving freely on
ings, and the novel features will be particularly
the shaft 4. The friction plates l5 and iii are
pointed out inthe appended claims.
surfaced with clutch facing material, and means
In the drawings,
50 is provided for forcing all of these revolving ele
Fig. 1 is a front elevation of a loom beam and
ments together so as to press those positively‘
a friction driving mechanism therefor organized
driven ?rmly against the plates l5 and it which,
in accordance with thisinvention;
as above mentioned, are keyed to the shaft 4.
Fig. 2 is a left-hand end View of the construcConsequently, when this action has been pro
tion shown in Fig- 1; and
55 duced the shaft will be picked up and revolved
2,405,908
3
4
through the frictional contact of those parts at
opposite sides of the respective plates 15 and IS
cooperates with a spring 41 to control the posi
tion of a latch or stop lever 42, pivoted at 43.
During approximately the ?rst half of the wind
with these plates themselves.
The mechanism for so forcing these plates and
disks together comprises a friction lever 20, Figs.
ing operation the foot 44 of an upright rack bar
45 rests on the upper end of the latch 42, as
clearly shown in Fig. 3. A spring 43 encircles
this rack’ bar and tends to force it downwardly
and the rack teeth mesh with a pinion 49 fast
on a shaft 41, Fig. 3, carrying the eccentric pivot
1 and 3, fulcrumed at 2| on a bracket 22 rigid
with the machine frame. A weighting mecha
nism is provided to force the upper end of this
lever toward the right including a disk-like head
23, integral with a graduated arm v23’ onywhich 10 pin 24.
weights 25 and 26 are mounted for adjustment,
Referring again to Fig. 3, it will be seen that as
the head having an arm 21, Fig. 2, projecting
the winding operation progresses and the diam
laterally therefrom and arranged to engage the
eter of the yarn body on the beam 2 increases,
left-hand side of the upper end portion of the
the roll 40 will be forced downwardly, thus grad
friction lever 20. This head 23 is mounted on a 15 ually pushing the upper end of the latch 42 out
pivot stud 24, Fig. 3, to swing freely thereon.
wardly, or toward the right, until it ?nally re
Thus the weights 25 and 26 operate through
leases the foot 44. At this point the spring 46
the connections just described to force the lever
20 against the friction ring 23, Fig. l, which
forces the rack bar 45 down, thus revolving the
shaft 41 through an angle of approximately 180°
crowds the latter against the disk l8 and them 20 in a counterclockwise direction, Fig. 1, and there
by brings the friction mechanism into action,
by causing the eccentric pin 24 to carry the head
causing it to revolve the shaft 4 and the beam 2.
23 bodily to the left. This moves the arm or
The mechanism above described is like that
prong 21 of the head 23 out of contact with the
heretofore used, except for some certain modi
friction lever 20, and brings the'o-ther arm 2'!’
?cations in the part 23 and its mounting provided 25 of said head into engagement with the right
for the purposes of this invention, but it operates
hand side of said lever. Such action shifts the
in the same manner as does the prior art mecha
pressure of the lever 20 from the collar 28 to the
nisms to revolve the beam 2, and it has the same
collar 28' of the second friction mechanism, and
limitations as do the prior art constructions.
thereby transfers the drive from the mechanism
According to this invention the shaft 4 is ex 30 which has been performing this function to the
tended to the left, as shown in Fig. l, and an
other mechanism which, as above pointed out, is
other friction mechanism like that above de
driven at a slower speed. The latter thereupon
scribed is mounted on it but is driven at a much
takes over the function of driving the loom beam
slower speed. This second friction drive com
and continues to do so until the winding opera
prises a gear 30, considerably larger than the
tion has been completed.
gear 8, and driven by a much smaller gear 3|
At this time the full beam is removed from
fasten the shaft 12 above referred to. The parts
the machine and is replaced with an empty one.
of this mechanism corresponding to those of the
When the yarn ends have been secured to the
previously described friction mechanism are des
latter and the winding operation is started again,
ignated by the same, but primed, numerals, and 40 the presser roll 34 is eased up to meet the beam,
these parts are associated with the shaft 4 in the
thus causig the arm 33, Fig, .3, and the roll 4|]
same manner as are the parts of the ?rst friction
to raise the rack bar 44 to its initial position, as
mechanism. Also, the lever 20, above mentioned,
shown in said ?gure, where it is again caught and
cooperates with a collar 28’ like that shown at
held by the latch 42. Simultaneously with this
28, to bring the second friction mechanism into
action the eccentric pin 24 is swung back in a
action to drive the shaft 4 and the beam 2 when
clockwise direction into its initial position, as
the lever is swung to the left, Fig. l.
shown 'in Fig. 1, thus moving the arm 27’ out
Mechanism is provided to shift the drive auto
of contact with the friction lever 23 and bringing
matically from the right-hand friction mecha
. the other arm 2'! back against the left-hand side
nism, Fig. 1, to the corresponding left-hand
of that lever, as illustrated in Fig. 1. This re
mechanism when the yarn bodyon the beam has ' stores the parts to their initial relationship, with
attained approximately a predetermined diam
the drive for the beam on the higher speed mech
eter. Preferably this result is accomplished
anism. The cycle of operations above described
through the action of the press roll. That is,
is then repeated.
the machine is equipped with the usual press roll
It will be evident from the foregoing that this
mechanism which includes a bracket 32, Figs. 1
invention overcomes the di?iculties experienced
and 3, carrying a pair of small front rolls 33
with the prior art drive since it divides the driv
and a corresponding pair of rear rolls, these two
ing operation between the two mechanisms, one
sets of rolls supporting a larger press roll 34
operating at a speed suited to the requirements
which is held continuously against the peripheral
of the building of approximately the ?rst half
surface of the yarn body on the beam during the 60 of the yarn body and then automatically shifting
winding operation. For this purpose the bracket
the drive to the other mechanism which operates
32 is mounted on an arm ?xed to a square shaft
at a lower speed suited to the requirements of
35 which projects beyond the right-hand end, Fig.
completing the winding operation. Thus the fric
1, of the parts there shown; and a long lever arm '
tion created in each mechanism is moderate, the
is ?xed to the outer end of said shaft and ex
wear on the friction surfaces is reduced to sat
tends backwardly toward the creel. Normally it
isfactory values, and the shift from one to the
lies approximately horizontally and it carries an
‘ other takes place entirely automatically without
adjustable weight which operates through the
any attention on the part of the machine oper
connections just described to force the roll 34 70 ator.
upwardly.
While I have herein shown and described a
An extension 36, Fig. l, of the presser roll shaft
preferred embodiment of my invention, it will
35 is connected with a trip shaft 31, coaxial with
be evident that the invention may be embodied
the shaft 35, and an arm 38, Fig. 3, fast on said
in other forms without departing from the spirit
shaft 36 and carrying a roll 40 at its Outer end, 75 or scope thereof.
2,405,908
5
Having thus described my invention, what I
desire to claim as new is:
1. In a slasher having means for supporting a
nism for automatically moving said control mem
ber to shift said drive from the high speed to
the low speed mechanisms‘ at an intermediate
point in the building of the yarn body on said
loom beam for the winding thereon of the sized
yarn, driving means for said beam comprising
beam.
'
two friction mechanisms both operatively asso
6. In a slasher having means for supporting a
ciated with said beam to revolve it, said mecha
loom beam for the winding thereon of the sized
nisms being so organized as to operate by varia
yarn, driving means for said beam comprising
tions in the degree of frictional slip to drive said
two friction mechanisms both operatively asso
beam throughout different speed ranges, one l0 ciated with said beam to revolve it throughout
higher than the other, and mechanism for auto
different speed ranges, one higher than the
matically shifting the drive from one of said
other, a control member cooperating with said
mechanisms to the other at an intermediate
mechanisms to throw either into operation, as
point in the building of the yarn body on said
desired, and simultaneously to throw the other
beam.
out of operation, spring biased means for mov
2. In a slasher having means for supporting a
ing said control member to shift the drive from
loom beam for the winding thereon of the sized
one of said mechanisms to the other, a latch
yarn, driving means for said beam comprising
restraining said spring biased means, and
two friction mechanisms both operatively asso
mechanism for automatically releasing said
ciated with said beam to revolve it, said mecha
latch when the yarn body on said beam has at
nism being so organized as to operate by varia
tained substantially a predetermined size and
tions in the degree of frictional slip to drive said
thereby shifting said drive from one of said
beam throughout different ranges of speed, one
mechanisms to the other.
‘
substantially higher than the other, and means
7. In a slasher having means for supporting a
for shifting the drive from the higher to a loom beam for the winding thereon of the sized
the lower speed mechanism automatically in
yarn, driving means for said beam comprising
response to an increase of predetermined magni
two friction mechanisms both operatively asso
tude in the diameter of the yarn body on the
ciated with said beam to revolve it, one at a
beam.
higher speed than the other, a lever operable
3. In a slasher having means for supporting a
to shift said drive from one of said mechanisms
loom beam for the winding thereon of the sized
to the other, weighting means acting on said
yarn, driving means for said beam comprising
lever to produce the friction utilized in each of
two friction mechanisms both operatively asso
said mechanisms in driving the beam at either a '
ciated with said beam to revolve it, said mecha
high or low speed, and means responsive to
nisms being so organized as to operate by varia- ‘ changes in the diameter of the yarn body on
tions in the degree of frictional slip to drive said
said beam as the winding operation progresses
beam throughout diiferent ranges of speed, one
to shift said lever from one position to another
substantially higher than the other, and mecha
nism for automatically shifting the drive from
the higher to the lower speed mechanism when
the yarn body on said beam has attained sub
and thereby to change the drive from the higher
speed to the lower speed.
8. In a slasher having means for supporting a
loom beam for the winding thereon of the sized
stantially a predetermined size.
yarn, driving means for said beam comprising
4. In a slasher having means for supporting a
two friction mechanisms both operatively asso
loom beam for the winding thereon of the sized
ciated with said beam to revolve it throughout
yarn, driving means for said beam comprising 45 different speed ranges, one higher than the
two friction mechanisms both operatively asso
other, a lever mounted between said mechanisms
ciated with said beam to revolve it, one at a sub
for applying pressure to either of them, as de
stantially higher speed than the other, a presser
sired, and thereby selectively bringing either into
roll mechanism acting on the yarn body on said
operation to drive said beam, a weighting mecha
beam during the winding operation to compress
nism acting on said lever to apply ‘pressure to
and compact the yarn, and means controlled by
either mechanism, and means operable auto
the position of the presser roll as the winding
matically in response to an increase of prede
operation progresses for shifting the drive auto
termined magnitude in the diameter of the yarn
matically from the higher to the lower speed
body on said beam to shift the action of said
mechanism when said yarn body has attained
weighting mechanism from one side of said lever
substantially a predetermined size.
to the other and thereby to shift the drive of
5. In a slasher having means for supporting a
said beam from one of said mechanisms to the
loom beam for the winding thereon of the sized
other.
yarn, driving means for said beam comprising
9. In a slasher having driving means for the
two friction mechanisms both operatively asso
loom beam as de?ned in preceding claim 8 and
ciated with said beam to revolve it, said mecha
including a press roll for acting on the yarn body
nisms being so organized as to operate by varia
on said beam as the winding operation
tions in the degree of frictional slip to drive said
progresses to consolidate said body, a construc
beam throughout different speed ranges, one
tion in which said shift of said Weighting mecha
higher than the other, a control member cooper 65 nism from one side of said lever to the other is
ating with said mechanisms to thow either into
initiated by connections controlled by the posi
operation, as desired, and simultaneously to
tion of said press roll.
throw the other out of operation, and mecha
ARTHUR E. SILCOX.
Документ
Категория
Без категории
Просмотров
0
Размер файла
677 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа