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` . Sept'lO, 1946.
F. Pf TAMBURRQ
THREAD GUIDE
` . 2,407,581 `
,
Filed NOV. 6, 1943
BMM@
’
.ATTORNEYS
‘
Patented Sept. 10,V 1946
2,407,587
o
„I NUNITED STATES PATENT N VoFF ice
2,407,587y
THREAD GUIDE
Francis P. Tamburro, Ozone Park, N. Y., assigner>
vto Willcox & Gibbs Sewing Machine Company, ¿
New York, N
a'corpor'atíon of New York ’
Y . ¿Application November 6, 1943, Serial N0,-_509,2.Q8f5'Claims.> (Cl. i12-218) v
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L
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„This invention relates to sewing machines, and
more particularly to improved means for guiding
In sewing machines the guiding of the thread
to the needle b_ar is a comparatively simple mat
lthe thread as it advances along an angular path
ter where the path 0i the thread'forms such an
ansie that the guiding means may. be placed on
toward theneedle. f
An obiect of this invention is to provide a Y
the inside of the angle, ‘for in such situations it
thread guide which >may be used for a plurality
is merely necessary .to provide Slots, in a plate into
_ofthreads in a multineedle machine andwhich,
which the thread may be slid so as to rest at the
besides being easy to'make and install, is easily
bottom of the slot.` In situations >where the thread
engaged by the threads, and, when properly en
forms an ansie and it 'is'notr convenient to'place
gaged, holds the, threads to itself even though the 10 the gliding means., on the insidecf. the4 angle, the
paths ofthe threads‘be outwardly and away from
matter of. guiding> the threadhas been a serious
the guide.`
.
'
`
problem- Thread guides for-such portions of the
path of the threadA may, of course, consist oi
. A""I‘he: Vthread guide of the present invention, in
the. form illustrated.> herein as exemplary thereof,
Closed loops or eyes, but in such cases it is neces-V
comprises a plate adaptedto be secured to the .1.5 sary to pass the end ofthe tlfiread> through 'the
machine frame and having a plurality of ñngers
'
which project from it obliquely and which are
eye.
.
,
.1
In a multineedle machine, besides being incon
venient, the closed eye guiding means is rather
expensive to make, since `each eyerrnust bernade
bent or rolled over toward the plate to lie over
the` surface of the plate and form skewed loops.
The ends of the fingers overlap, without touch 20 separately and be separately fastened to a plate.
ing, the edge of the plate and the base of the
Another‘solution of the problem is to provide a
adjacent finger, thus forming eyes having slant
guide having spring-closed openings through
ing openings through which the stretches of
which the thread may be forced, and, when once
threads may be passed. Thus, with the thread
»placed in the guide, is prevented from pulling out
guide of the present invention, it is not necessary 25 by the spring. But, this kind of guide is quite
to use closed loops or eyes through which the
expensive to make, and since it involves moving
thread must be passed end-nrst.
parts is liable to get out of order.
In using the thread guide of the present inven
As will appear below, the present invention pro
tion, the plate is so mounted that the lingers slant
vides a simple and economically made plate which
away from the direction in which the thread is 30 embodies the advantages of closed eyes and yet
to be turned.
which may be threaded without manipulating
Other features and advantages will hereinafter
the end of the thread, does not have any moving
appear.
parts, and securely holds the thread from escap
In the accompanying drawing which illustrates
one form of this invention, that at present pre
ferred--Figure 1 is a front view showing the thread
ing its control.
35
,
As shown in the accompanying drawing, the
thread guide I0 of the present invention corn
prises a plate I I having a mounting hole I2
guide of the present invention located between
adapted to receive a screw I3 and a locating hole
the needle thread take-up member and the nee
I4 adapted to receive a pin I5 ñxed on a hat I6
dle thread lower guide from which the thread 40 on the machine frame I'I. The plate I I is blanked
passes to the needle bar.
out from a piece of sheet metal so as to have the
Fig. 2 is a partial transverse sectional view
shape shown in Fig. 6. The blank is made so
taken on the line 2_2 of Fig. l, showing the an
as to have'a plurality of fingers I8 extending
gular path of the thread when viewed from the
obliquely with relation to the longitudinal edge
side, and showing the relationship of the thread 45 I9 of the plate. The blank II is then worked so
guide of the present invention to the needle
that the ñngers I8 are bent as a group on an
thread lower guide and the needle thread take-up
mechanism.
axis parallel to the longitudinal axis of the plate
.
so that each finger has a hook portion 20,` skewed
Fig, 3 is a. front view of the thread guide plate
so that the end of each overlies the plate I I, and
of the present invention.
50 when viewed in plan overlies the base 2I of the
Fig. 4 is a transverse View of the thread guide.
adjacent finger. The end finger I8 overlies a
Fig. 5 is a top plan View of the thread gude.
projection 22 on the end of the plate.
Fig. 6 is a plan view of the blank of the thread
When the thread guide of the present inven
guide before the slanting ñngers are bent back
upon the plate.
tion is mounted on the outside of the path of
55 the thread as shown in Fig. 2, the threads are
2,407,587
\
3
heldin the loops formed by the hooks 20 and are
caused to follow the paths deiined by the hooks
both in a vertical plane as shown in Fig. 2, and
in a horizontal plane as shown in Fig. 1. Any
tendency of the threads to fall away from the
hook by simply dropping down is prevented by
the skewed arrangement of the- fingen-for, in
order to be released from the hook, the thread
must not only drop down but also move to the
walls of the spaces between the fingers are pol
ished before the lingers are bent.
Variations and Amodifications may be-` made
within the scope of this invention and portions
of the improvements may be used without others.
I claim:
1. YA thread guide comprisingïa plate having
a plurality of inclined ñngers projecting from
one edge thereof, said fingers being bent out of
side, and since there is no tendency for the thread: 1.0; the plane of the plate and skewed toward the
to have this compound movement it is trapped ` vplate and forming thread eyes having slanting
against escaping from between the lingers.l Y Y ` ‘
' thread receiving openings between them.
2. A thread guide comprising a plate having
In a situation in which the plate Il) is usedin the form of the inventionv illustrated in "the vÜa plurality of integral inclined iingers project
ingfrom one edge thereof, said fingers being bent
accompanying drawing, the threads 23 (see Fig.
out of the plane. of the plate and skewed toward
2) pass over tensioning devices 244, thenthrough
the plate and forming thread eyes having slant
an upper guide 25, and downwardly in front of
ing thread receiving openings between them, the
the needle thread take-up members 26, through
edges of the fingers being rounded off to provide
guide I0 of the present invention and then lat
a smooth guide surface for the thread. Y .
„
erally to -the lower needle thread guidev 21, and
3. Athread guide »comprising ja plate having
>,finally to the bar 28. To pass the thread over
a plurality of inclined ñngers projecting from one
the guide plate IIJ, it is merely necessary to piace
edge thereof, lsaid ñngers being bent» out ofthe
the loop of the thread formed between the guide
plane. of the plate and extending in a loo'p toward
25 and the guide 21 over V'the end of its coop
`erating iinger I8. The thread when tautened
the plate and forming slantingly open eyes.
. .
will then ride up on the hook 20. and be confined
in the loop of the hook, for the linger .is skewed
in a direction normal tothe path of 'the thread.
.4. A thread guide for controlling the angular
particularly advantageous when used in combi
lies in spaced relation the base of another hook; '
5. A thread guide comprising a plate stampedl .
path of a plurality of threads and located outside '
the angle of saidpath comprising a plurality of
. The needle guide of the present invention is î . hooks skewedso that the end of one hook over
nation with rotary takeupmeans such as the
take-upelements 25, since, should any slack be
. formed Ain the thread as the take-up elements
move away from the part'of the thread ibetween ,i ,_
out of sheet metal to form a plurality of obliquely
disposed lingers along one end of the plate, said Y
fingers being bent out of the plane o_f the plate
the guide 25 and the guide Ill, it will not slip oiî
and back towardthe plate to form a .plurality of
the hook finger Il!` because of the fact that _the
hooks skewed to present guiding edges normal to
latter is skewed away from the path of the thread.
In order to provide smooth edges over which
theA direction of travel of the threads. l
Vthe thread rides, the ñngers I8 are swedged to î ., Y' Í
remove sharp corners as shown in Fig. 6 and the
l FRANCIS P. TAMBURROÍ
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