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Патент USA US2108120

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Feb 15, 1938.
2,108,121)
F. c. HALE
CIRCULAR LOOM
Filed May 16, 1936
FRANK C- HALE
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AéTORN s
2,108,120?
Patented Feb. 15, 1938
"UNITED STATES PATENT OFFm-E
Frank‘?orbynkpHalé, I'S‘pondo’n, near Derby, Eng- “
~
~ land, assignor to Celanes'e ~_C‘o'rporaticn of
America, a corporation of "Dclaw’arew =
Application May 16,
193i," seen 1No.‘ 80.17%
In Great Britain July 2, 1935
2 Claims. (Cl. 139—-13)
This invention relates to circular looms, and
Fig. 3 is a plan view corresponding to Fig. l;
has particular reference to shuttle-supporting and
means of the type in which vane wheels mounted
for rotation at one side of a shuttle pass through
5 the warp sheet at that side of the shuttle to make
engagement with the shuttle at positions spaced
apart with respect to the length of the shuttle,
the slots between the vanes ‘providing during
rotation of the wheels for the threads of that
10 sheet of warps to pass the wheels, while the en
gagement of the vane wheels with the shuttle
secures the relative circular motion between
shuttle and warps necessary for circular weaving.
Shuttle-holding means of this type are described
15 in U. S. Patent No. 2,050,328, according to which
rubbing contact between the vane wheels and
the shuttle body is substantialy avoided, flanged
rollers being provided in the shuttle body for
engagement with the vane wheels.
There
is .
20 usually a pair of vane wheels to- engage each
?anged roller,
According to the present invention support is
provided by rollers disposed at two points spaced
apart on the side of the shuttle remote from the
25 vane wheels to bear against a circular race dis~
posed at that side of the shuttle so as to provide
two thrusts to oppose the thrust of the spaced
vane wheels. The rollers are advantageously dis
extending to the left parallel to tangents of the
shuttle circle. Each shaft 4 carries two pairs 10
of vane wheels 5, which penetrate the outer
warp sheet 3 so as to engage rollers. 6 freely
mounted on horizontal axes ‘I in the shuttle body
at heights above and below the height of the
shaft 4. Each shuttle is thus supported at four 15
points on its outer side.
Inside the shuttle circle lies the circular race 8,
having an inclined face with a rubber covering
9. Opposite each pair of vane wheels 5 a roller
I0 is mounted in the shuttle body on a pivot ll 20
parallel to the face of the race 8. Self-oiling or
“oil—less” bushes l2 avoid the necessity for lubri
cating the rollers Ill.
.
The rollers It} bear against the race 8, the inner
warp sheet 2 passing between the rollers and the 25
race. Each shuttle is thus supported on its inner
side at two points at a height intermediate the
posed symmetrically with respect to the vane
heights of the rollers 5, the tWo- points providing
for two symmetrically applied thrusts to oppose
wheels, e. g. immediately opposite the vane
the thrusts of the vane wheels 5.
wheels.
Each shuttle is thus nipped at two positions in
its length by a pair of vane wheels 5 and by the
race 8 engaging the corresponding roller I I). The
shuttle is thus held steadily and prevented from
undue rocking movement about a vertical axis,
which improves the weft-laying of the'several
shuttles, gives smoother rolling of the vane wheel
peripheries on the rollers 6, and generally adds to
the performance of the loom.
‘
By this shuttle mounting, the tendency of the
shuttle to rock is much diminished, with conse
quent improvement in the running of the loom,
35 and life of the vane wheels and shuttle mecha
nism, and lessening of the danger of the warp
threads being cut.
Usually the space available requires that the
rollers should be small in diameter, but by the
provision of self-oiling bushes in the rollers, or
by the use of needle bearings, small diameter
rollers capable of very high speeds of rotation
can be satisfactorily accommodated.
The race with which the rollers engage is in
45 clined, the rollers having a corresponding in
clination, so as to assist in taking the weight
of the shuttle.
The invention will now be described in greater
50
Fig. 4 is a detail of Fig. 2 to a larger scale.
The shuttles l are held within warp sheds com
prising inner and outer warp sheets 2, 3 formed
by any suitable shedding means (not shown).
Outside the shuttle circle are shafts 4, lying at
their right-hand ends opposite the shuttles I and
detail with respect to the accompanying drawing,
in which:
Fig. 1 is a front elevation of a shuttle and. its
vane-wheel mechanism;
Fig. 2 is a vertical section taken on the line
2-2 of Fig. 1;
30
The shafts 4 are carried by columns I3 mount 40
ed on a ring l4 rotatable about the axis of the
loom. Bevel gears l5 connect the shafts 4 with
shafts l6 inside the columns [3, the shafts l6
terminating in pinions I‘! that mesh with a sta
tionary annular gear 58, so that as the ring [4 45
is rotated (by means not shown) the vane wheel
shafts 4 are rotated.
As the vane wheels 5 are carried by the ring [4
round the axis of the loom, they press against
?anges [9 of the rollers 6 in the shuttles I and 50
cause the shuttles to be propelled round the loom
at the same speed as the ring M. The rollers l0
rotate freely over the warps 2 lying between them
and the race 8.
The rotation of the vane wheels 5 presents the 65
2
2,108,120
slots between the vanes to the threads of the outer
warp sheet 3 and allows those threads to pass the
vane wheels.
The bodies of the rollers 6 may be made of
slightly resilient material, e. g. fabric impregnated
with synthetic resin and blocked to form a mate
rial capable of being machined. The ?anges l9
are preferably of metal, as are the vane wheels.
Having described my invention what I desire to
10 secure by Letters Patent is:—
1. Circular loom of the type described, wherein
each shuttle is positioned by means of vane wheels
making engagement with one side of the shuttle
at positions spaced apart with respect to the
length of the shuttle and by means of a pair of
rollers also spaced apart with respect to the length
of the shuttle at positions providing for both roll
ers to oppose the thrust of the vane wheels and a
circular race against which the rollers bear on
the side of the shuttle remote from the vane
wheels, the vane wheels and the pair of rollers
being disposed symmetrically with respect to the
shuttle.
2. Circular loom of the type described, wherein
each shuttle is positioned by means of vane wheels
making engagement with one side of the shuttle at
positions spaced apart with respect to the length 10
of the shuttle and by means of a pair of rollers
also spaced apart with respect to the length of the
shuttle and a circular race against which the
rollers bear on the side of the shuttle remote from
the vane wheels, the rollers being disposed imme- 15
diately opposite to the vane wheels.
FRANK CORBYN HALE.
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