Year: 1888

page_text: I, JEAN BAPTISTE DAUDELIN, of Fall River, in the State of Massachusetts, United
States of America, Inventor, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
My invention is an improvement in self threading shuttles and consists in cortain
means for controlling and guiding the thread to the delivery eye of the shuttle. In
the accompanying drawings I have shown two forms in which I have contemplated
applying my invention and I have fully disclosed the same in the following Specifi-
cation and claims :-
In the drawings,
Figure 1 is a perspective view of a loom shuttle embodying one form of my
invention.
Figure 2 is an enlarged view of so much of a shuttle as is necessary to illustrato
my invention.
Figure 3 is a transverse sectional view; and
Figure 4 is a detailed view of the thread guiding post.
Figure 5 is a view similar to Figure 3 of a modified construction.
Figure 6 is a perspective view of a loom shuttle embodying a modified form of
my invention.
Figure 7 is an enlarged sectional view of a part of the same.
Figures 8 and 9 are enlarged views of one of the thread guiding devices
employed in the same.
In the form of my invention shown in Figures 1 to 5, A is the shuttle body of
any preferred construction, as is also the spindle and spring. The shuttle body in
front of the point of the spindle is cut away as shown to form the recess a to receive
the thread post a¹. The front wall of this recess is covered with a metal plate b which
is extended along the top of the shuttle a short distance where it is counter-sunk so
that its outer surface is flush with the surface of the shuttle. The passage to the
delivery eye e of the shuttle is through an opening in the vertical part of the plate ba
little to one side of the point of the spindle. This passage extends forward in an

page_text: inclined direction to the side of the shuttle communicating with the delivery eye,
the said eye being located as shown forward of the recess or nearer the point of the
shuttle. A narrow slit e¹ is made through the plate and shuttle body following the
general course of the delivery eye which it enters tangentially. The delivery eye
may be lined with metal and the whole or part of the passage leading thereto.
The direction of this passage need not be in a straight line but should not so far
diverge from it that the slit cannot be made to easily communicate therewith
through its entire length.
The thread post is provided with a head the periphery of which inclines inwardly
from top to bottom and on the underside this head is provided with two notches a², a³
which have each a straight or vertical side. The post is turned to such a
position that these notches are on the side of the post on which the thread passes
and they serve to catch the thread as it is unwound and hold it from passing out
from under the head of the post. I also may provide the side of the head with a
horizontal groove with a straight horizontal upper wall to catch the thread in
case it should pass out from under the head of the post and prevent it from rising
above the head of the post.
The operation of threading the shuttle will be apparent from the foregoing
description, and is as follows: The operator holding the shuttle with the delivery
eye towards him passes the thread over or beyond the thread post and draws it towards
him until it engages the threading slit e when on further drawing it, it passes into
the delivering eve. The periphery of the head of the thread post being inclined,
the drawing of the thread against the same in the act of threading tends to draw
the thread downward and beneath the head.
forming part of the
The thread is thus
It will be observed that the opening through the plate
delivery passage is at one side of the centre of the shuttle.
drawn against the side nearest the threading post and the threading slit entering
at a tangent on the opposite side there is little or no liability of the thread leaving
the passage through the threading slit.
In Figure 5 I have shown a slight modification. In this construction the opening
in the plate is made at the centro or a little to the other side of the same from
that in which it is located in the other form, and the threading slit is made to enter
the opening in the plate b at the opposite side of the same. In this form the thread
passes from the spindle to the thread post and from that to the opening in the plate b,
the contact with the post serving to keep the thread against the side of the opening
opposite that at which the threading slit entors.
The function of the plate is to strengthen the parts and to prevent the splintering
and roughening of the sides of the threading slit.
In the modification of my invention shown in Figures 6 to 9 A. is the shuttle body
provided with a spindle and spring all of any preferred construction. The end of the
shuttle is provided a short distance from the end of the spindle recess, with a circular
recess which receives the thread post B. The thread post is preferably formed with a
tapering head attached to the stein which is of slightly smaller diameter than the
smallest part of the head and is screw threaded at its lower end. The head at its smallest
point being a little larger than the stem, a shoulder is thus provided which serves to
prevent the thread from rising over the thread post when once it is in position. The
portion of the shuttle body which separates the spindle recess from the recess is
provided with a slot extending from a point somewhat below the end of the spindle to the
upper face of the shuttle body. This slot is of uniform or nearly uniform width for a
portion of its length but the upper portion diverges rapidly forming inclined sides b²
adjacent to the inclined surface of the thread post. This incline serves to direct the
thread beneath the inclined head of the thread post.
In the forward portion of the shuttle end is the recess C one end of which is
connected with the recess by a cylindrical passage in which is placed the thread
guide D.
This cylindrical passage is provided with a threading slit e which is in direct
communication with the passage throughout its length.

page_text: The thread guide D consists of a cylindrical piece of metal or other suitable material
adapted to fit snugly in the passage of the shuttle, and has its upper edges a little
distance apart to correspond to the threading slit c. The outer end of the thread guide
is provided with the curved projection which extends from the upper side of the
guide, over down and back conforming to the contour of the curved sides of the guide,
and forming the slot d between the main body of the guide and the lower part of
the projection. The under side of the thread guide is cut away forming the
rectangular slot d³ and one of the upper edges is provided with the curved projection d¹
which curves over and downwardly, as shown in Figure 9. A small projection
is also provided to prevent the guide from slipping too far into the passage in the
shuttle body.
The operation of the devices is as follows:-The thread is drawn forward from the
spindle until it rests upon one of the inclined surfaces 62 of the slot which will
cause the thread to be carried under the head of the thread post. As the thread is
drawn along the inclined surface of the post it will be carried downward and will
reach a point below the shoulder which will prevent it from rising. The thread will
then enter the threading slit and as it falls upon the upper surface of the projection d
of the thread guide, will pass over it and into the slot d², and pass over the end of
the projection ¹. As the thread enters the threading slit its tension will force it
over the upper surface of the projection of the guide and as soon as it passes
from beneath the end of the said projection, it cannot by any possibility return or
leave the thread guide as the point of the projection d lies in the same plane as the
bottom of the guide or slightly below the same. In figure 7 is shown the course of
the thread when it lies loosely in the guiding device but, when drawn tight, the
thread extends in an almost direct line from the spindle past the stem of the thread
post and through the thread guide D and when once the shuttle has been threaded
no accident can displace the thread. The straight discharge passage insures the full
delivery of the thread without strain and with little liability of breakage. It will
be seen that the recess C which forms the delivery eye of the shuttle is located
centrally of the upper face of the end of the same and the shuttle may be placed in
the loom with either side toward the reel.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is
1. A self-threading shuttle having a recess a, a plato lining the front wall of the
said recess, an opening through the plate extending forward in an inclined direction
to the side of the shuttle body communicating with the delivery eye of the shuttle,
the said eye being located forward of the recess or nearer the shuttle point, and a
threading slit through the plate and the shuttle body communicating with the opening
in the plate and with the delivery eye and intersecting the latter throughout the
length thereof, substantially as described.
2. A self-threading shuttle having a recess a, a plate lining the front wall of the
said recess, an opening through the plate extending forward in an inclined direction
to the side of the shuttle body communicating with the delivery eye of the shuttle,
the said eye being located forward of the recess or nearer the shuttle point, and a
threading slit, through the plate and the shuttle body communicating with the
opening in the plate and with the delivery eye and intersecting the latter throughout
the length thereof, and a headed thread post in the said recess of the shuttlo,
substantially as described.
3. The combination with a shuttle having a recess a, an opening in the said recess
substantially in line with the spindle communicating with the delivery eye of the
shuttle, of a headed thread post located in the said recess and provided with thread
engaging notches on the underside of the head to prevent the thread from becoming
disengaged from the head of the post, substantially as described.
4. A shuttle having a delivery eye substantially in line with the spindle, a
substantially straight delivery passage leading from the spindle recess to the said

page_text: eye, and a threading slit communicating with the said passage, substantially as
described.
5. A shuttle thread guide consisting of a tubular metal shell having an opening
along its upper side for the admission of the thread and provided with the slot d³ and a
projection d', substantially as described.
6. In combination with a shuttle having a threading slit, of the thread guide
located in the delivery passage of the shuttle consisting of a tubular shell having an
opening along its upper side for the admission of the thread and the spiral
projection d at the outer end of the same, separated from the main body of the
shell by the slot d², substantially as described.
7. The combination with a shuttle having a recess C forward of the point of the
spindle of a delivery passage leading to the said recess, a threading slit communicating
with the said passage and a thread guide located in the said delivery passage
consisting of a tubular shell having an opening along its upper side for the admission
of the thread, and the spiral projection at its outer end, the said spiral projection
being located in the recess C, substantially as described.
S. The combination with a shuttle having recesses, and C forward of the point of
the spindle, a threading slot leading to the recess and the threading slit of the
threading post B in the recess and a thread guide between recesses and C
having a longitudinal opening to admit the thread and the spiral projection d,
substantially as described.
9. The combination with a shuttle having recesses and forward of the point
of the spindle, a threading slot leading to the recess and the threading slit c
of the thread post B in the recess and a thread guide between recesses and C
having a longitudinal opening to admit the thread, the slot d³ and projection d',
substantially as described.
501 Low of An 180e