Year: 1899

page_text: Date of Application, 2nd Feb., 1899 -Accepted, 15th Apr.,
1899
Миргоѵешению ID NOWI
We, STEPHEN SAMUEL ROSZELL, Inventor, 159, West Maxwell Street, Lexington,
Kentucky, and JOIN ROWAN ALLEN, Promoter, Lexington, Kentucky, 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;
This invention relates to improvements in self-threading needles, and pertains
to a needle having a longitudinal opening in the head thereof, with a longitu-
dinal slit through the side of the needle and communicating with the longitudinal
opening, all of which will be fully described hereinafter and particularly pointed
out in the claims.
The object of the invention is to provide a needle which is self threading,
by providing the head or butt of the needle with a longitudinal thread opening,
and a longitudinal slit communicating from the outside of the needle within
the said opening, the lower end of the opening being enlarged, whereby the
thread can be placed therein and through the slit and drawn endwise to carry
the knot within the socket.
In the accompanying drawings,
Figure 1 is a perspective view of a needle embodying the invention,
Figure 2 is a longitudinal sectional view of Figure 1 on the line 2-2 of Figure 1.
Figure 3 is a longitudinal sectional view on the line 3-3 of Figure 1.
Figure 4 is a view of a modification.
Figure 5 is a longitudinal section of Figure 4.
Referring now to the drawings, A indicates a needle having the enlarged
upper end preferably tapered outward as shown. A longitudinal opening a is
made from the outer end of the head of the needle, and a transverse opening b
at the inner end of the longitudinal opening. A transverse slot E is then made
in the needle forming an external communication, with the transverse opening,
and a longitudinal slit f is made in the head of the needle communicating with
one end of the transverse opening and the outer end of the longitudinal opening.
The transverse opening is larger than the longitudinal opening, whereby the
knot of the thread will be drawn into the transverse opening and cannot pass
through the longitudinal opening.
In threading this needle the thread is passed laterally through the transverse
opening and then through the longitudinal slot into the longitudinal opening,
the inner end of the longitudinal opening being smaller than the transverse
opening will not permit the knot to be drawn therethrough.
In Figures and 5, we show a modification, in that the longitudinal opening
has its lower end enlarged and opening through the side of the needle, and
the thread is placed in the socket through the longitudinal slot g, the knot
being drawn into the socket through its lower enlarged end.
It will be noted that in each form the needle is threaded by a lateral movement
of the thread through the slot and the knot drawn through the enlarged lower
end of the longitudinal opening into the socket.

page_text: A needle of this construction is easily threaded and is especially adapted for
use as a surgical needle, though it is equally as well adapted for universal
purposes.
While we have thus far described our needle for using a single knotted thread,
the construction shown in Figs. 1, 2 and 3 is adapted to use a loose thread as
illustrated in dotted lines Fig. 2 for basting, or similar work, or to be used for
single knotted thread as shown in full lines Figs. 1, 2, 3, 4 and 5. From this
it will be noted that our invention is adapted for the use of a single or a
double thread.
a
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. A needle having a longitudinal opening in its head the lower end of the
opening passing laterally through the needle, and a longitudinal slit connecting
the outer and inner ends of the opening, substantially as described.
2. A needle having the head provided with a longitudinal opening, a transverse
opening at the inner end of the longitudinal opening, a transverse slot con-
necting the ends of the transverse opening, and a longitudinal slot connecting
one end of the transverse opening and the outer end of the longitudinal opening
the parts adapted to operate as and for the purpose described.
Dated this 1st day of February 1899.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C. Agent for the Applicants.