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Патент USA US2121071

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June 21, 1938. '
.
_
I
w. J. CRÓFT, JR
BRAID
2,121,071
FORMER
Filed Jan. 20, 1936
INVEN TOR.
A TTORNEYS. l
2,121,071
Patented June 21,l 1938
UNITED STATES PATENT OFFICEl
2,121,071
BRAID FORMER
Walter J. Croft, Jr., West Roxbury, Mass., assign
or to International Braid Company, a corpora
tion of Massachusetts
Application January 20, -1936, Serial No. 59,837
11 Claims. (Cl. 96-16)
This invention relates to a braiding machine,
more particularly to a braid former; and has for
.one of its objects the bettering of the appearance
of the braid as it is formed by minimizing ir
Ul regular places and smoothing out any of the
threads which might be interlaced by diñerent
tensions so as to provide an even surface appear
ance.
Another object of the invention is the provi
sion of a device which will enlarge the width of
the braid and yet not weaken the braid to the
same extent as where such widening effect is
caused by a spit or central needle over which the
>braid is sometimes formed.
Another object of the invention is the provision
of a braid widening device which will eliminate
the braid will form about the spit at a lower
point than is possible for the take-up rolls
to pull the braid off of the spit and such forming
around this spit is so tight that it must be out
therefrom and the work pieced up in order that
the machine may be further operated. Then
again, this needle or spit is not firm but will shake
during the operation of the machine, which
causes an irregular line or edge of >the braid to
be formed.
rthe braiding focus .lowers which may take place
wires are highly unsatisfactory and seldom used;
and in order to attainv the vadvantages of braid 20
braiding carriers of the machine.
Another object of the invention is the provision
of a device which will have a positive spring ten
sion which will be flexible for the accommodation
of braids o_f different dimensions without distort
25
ing the device to such an extent that a wide vari
ation of pressure may be expected as a result of
With these and other objects in View, the in
ticularly pointed out in the appended claims.
In the accompanying drawing:
Fig. 1 is a side elevation of the upper portion
CAD (A of a braiding machine showing my -improved de
Y
Fig. 2 is a sectional view through my improved
braid former and showing a fragmental portion
of the `drop former stud;
Fig. 3 is a top plan view of the former;
40
ì Fig. 4 is va sectional view of the body portion
of the former;
f
Fig. 5 is a sectional view on line 5-5 of Fig, 3
showing the movable member in mounted posi
tion;
`
Fig. 6 is a top plan view of the widened and
ñattened braid which is made in the machine;
Fig. 7 is a sectional view thereof.
ing over a needle or spit and of an ironing device,
I have provided a pair of members'which are
positively moved together and carried by the
braid former which serve to spread out or in
` crease the width of the braid and also to iron it; 25
and I have found that the braid is effectively
spread by this improved means and also possesses
the same yarns are woven over a needle or spit;
and rthe following is a more detailed description -
vention consists of certain novel features of con
struction, as will be more fully described and par
vice in position;
~
Ironing devices consisting of U-shaped spring
about 10% greater breaking strength. than where
heavy braids being passed through the device.
`
In `the formation of braids, it is frequently
5 O desirable that the braid be made as wide and flat
as possible with the material used; and in order
to accomplish this purpose, the braid is usually
formed over the end of a needle or spit which
stands up in the middle of the machine to a
55
so that if the machine slows down' for one reason
or another, such as the variation in power,
the troubles attendant with the use of a needle
or spit about which the braid may form when
è due to a slowing down of the rate of travel of the
45
braid is formed about the end of this spit and
then slides therefrom. It is known in braiding
machines that the braiding focus changes with
the speed of the machine and that when the ma
chine slows down the braiding focus will lower 5
height just above the braiding point so that the
,of the present embodiment of this invention, il
lustrating the preferred means by which these
advantageous results may be accomplished:
With reference to the drawing, I0 designates
lthe drop former stud of a braiding machine '
vwhich is suitably supported from the frame of
the machine.
The take-up rolls I2 and rI3 are
, suitably mounted and driven from the shaft I I in
a known manner, not speciñcally here shown, and 40
the braid is packaged upon a reel I4 suitably driv
en from a portion of the braiding machine in a
known manner.
The former designated generally `lli consists
`of a body portion I5 having a slot at its end> I7 45
>to receive the reduced threaded portion I8 of
Ythe stud III and engage the shoulder I9 thereof
where it is held by means of washerZD and nut 2 I.
The outer end of the former is provided with an
opening 22 which is beveled as'at 23 for the pas 50
sage of the work therethrough. The body will
be so adjusted as to height that the braiding
focus will be within theopening 22. At the outer
end of this body I 6 an integral member 24 is
provided having a surface 25 which is in a plane 55
2
2,121,071
at one side of the center of the opening 22 to
engage the braid 33. A supporting portion 26
also stands up from the body |6 and the member
24 and portion 26 are provided with aligned bores
21 and 28 in spaced relation to receive the guide
rods 29 and 30 upon which the movable member
3| is slidably mounted. The edge 32 of this mem
ber engages the opposite side of the braid 33 so
that the samewill be positioned substantiallycen
10 trally of the opening 22. In order to urge the
slidable member 3| into this pressing relation,
springs 34 are provided encircling the rods 29 and
30 and acting between the surface 35 of the slid-y
able member 3I and the surface 36 of the up
standing portion 26 so as to yieldingly force the
member 3| into engagement with the Work 33.
As it is desired that the braid shall extend ver
tically upwardly in a plane substantially parallel
to these surfaces 25 and 32 I have provided a
20 guide ring 31 positioned directly vertically above
the opening 22 a short distance such for instance
as one and three-quarters inches, although other
suitable distances may be had, and supported
by means of an L-shaped arm 38 threadingly en
gaging the threaded opening 39 in the upstand
ing portion 26 Where it is secured by check nut 40.
The braid which would be formed generally of
cylindrical tubular form will by means of the
pressure exerted upon it between the members 24
and 3| be ñattened out to a considerable extent
as illustrated in Figs. 6 and 7, and the pressure
of the members 24 and 3| will also iron out any
irregularities which might have been caused by
a different tension on the braiding threads ¿li
and cause the same to be of a very even appear
ance. Further, by reason of the more rigid sup
port for the former with no vibrating spit on
which the braid is formed a straighter edge for
the work is provided than has heretofore been
40 usual where such a spit or needle has been used.
The foregoing description is directed solely
towards the construction illustrated, but I desire
it to be understood that I reserve the privilege
of resorting to all the mechanical changes to
which the device is susceptible, the invention
being deñned and limited only by the terms of
the appended claims.
I claim:
1. In a braiding machine, a braid former com
prising a body portion, a pair of members for
engaging the opposite sides of the Work, `rods
for slidably mounting one of said members for
movement toward and from the other member,
and spring means for urging one member along
said rods toward the other.
2. In a braiding machine, a braid former co-m
prising a body portion having an opening there
through, a member integral with the body cover
ing a portion of said opening, a member slid
(50 ably mounted on said body movable toward said
integral member, and resilient means for elîect
ing movement of said movable member toward'
said integral member.
3. In a braiding machine, a braid former com
prising a body portion having an opening there
through, a member integral with the body cover
ing a portion of said opening, a pair of rods sup
ported by said member, a portion raised on said
body, a movable member slidable on said rods,
and springs -encircling said rods for moving the
me-mber mounted thereon therealong.
4. In a braiding machine, a braid former com
prising a body portion having an opening there
through, a member integral with the body cover
ing a portion of said opening, a pair of rods sup
ported by said member, a portion raised on said
body, a movable member slidable on said rods,
springs encircling said rods for moving the mem
ber mounted thereon th-erealong, and a guide .
above said members for directing the work ver
tically upwardly through said members.
5. The method comprising braiding a plurality
of yarns without a pin or core and immediately
passing the braid so formed between non-rota
tive pressing surfaces located at the braiding
point. `
6. In a braiding machine, a braid former hav
ing an aperture therein free from a pin and near
one side of which the braid is formed, and a pair 20
of non-rotative, relatively resiliently mounted
generally plane ironing members through which
the braid passes immediately upon being formed.
7. In a braiding machine, a braid former hav
ing a ñxed apertured' body so arranged that the 25
threads to be braided extend upwardly through
its aperture, substantially plane opposed ironing
surfaces relatively resiliently mounted at the up
per end of said aperture, said body having bev
eled edges surrounding the lower end of said 30
aperture.
8. In a braiding machine, a support, a braid
former comprising a body portion adjustably se
cure-d to said support, a pair of non-rotative
members on said body portion and free from 35
operating parts between them for engaging the
opposite sides of the work adjacent the braiding
focus, and resilient means for moving one of said
members toward the other for pressing the work
between them.
40
9. In a braiding machine, a support, a braid
former comprising a body portion adjustably se
cured to said support, a pair of non-rotative
members on said body portion and free fromY
operating parts between them for engaging the 45
opposite sides of the work adjacent the braiding
focus, and a helical spring for moving one of said
members toward the other for pressing the work
between them.
l0. In a braiding machine, a support, a braid 50
former comprising a body portion adjustably se
cured to said support, a pair of non-rotative
members on said body portion and free from op
erating parts between them for engaging the op
posite sides of the work adjacent the braiding 55
focus, and a pair of helical springs for moving
one of said members toward the other for press
ing the work between them.
ll.. In a braiding machine, a support, a braid
former comprising a body portion adjustably se 60
cured to said support, a pair of block members on
said body portion and free from operating parts
between them for engaging the opposite sides
¿of the work adjacent the'braiding focus, means
for slidably mounting one of said members for
movement toward and from the other member,
and spring means for urging one member toward
the other.
WALTER J. CROFI', JR.
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