Improvements in Embroidering and Sewing Machines.
Year: 1889

page_text: Date of Application, 16th Sept., 1889
Complete Specification Left, 16th July, 1890-Accepted, 6th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Embroidering and Sewing Machines.
I, EDWIN DOUGHTY Foxhall Road Nottingham in the County of Nottingham Lace
Curtain Manufacturer do hereby declare the nature of this invention to be as
follows:-
Hertoforo in embroidering machines constructed to twist an extra thread round the
needle thread during the process of embroidering any description of fabric, a bobbin
holding the extra thread has been made to revolve round the rod holding the needle,
or a contrivance has been used to cause the extra thread to lie on the fabric and
alternately to move it on one side or the other of the needle and thus be sewn on
the fabric.
One of my improvements consists in using a hollow rod for the needle holder.
This rod serves as an axle for the bobbin holding the extra thread.
The bobbin I arrange so that in one respect it is stationary, but at the same time it
is free to rotate round the hollow rod, and to give off the extra thread as required.
A rotating guide is also fixed on the hollow rod, to conduct the extra thread to the
surface of the fabric and there twist it once round the needle thread at every stitch.
Through the hollow rod I pass the needle thread and then through the needle eye
as in ordinary sewing and embroidering machines.
Another of my improvements is the arrangement and adaptation of two spur wheels
connected by a chain which rotates the before mentioned guide on the hollow needle
holder.
Dotal hi
1000
EDWIN DOUGHTY.
COMPLETE SPECIFICATION.
Improvements in Embroidering and Sewing Machines.
I, EDWIN DOUGHTY Foxhall Road Nottingham in the County of Nottingham Lace
Curtain Manufacturer 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 :-
As a preface to the following explanations I mean by an extra thread, an embroidering
thread which may be a combination of several threads of similar or dissimilar
materials.
1
Heretofore, in embroidering machines constructed to twist an extra thread round
the needle thread during the process of embroidering, a bobbin holding the extra
thread, free to turn on an axle fixed on a suitable frame, has been made to revolve
round the needle holder.
One of my improvements consists in adapting and using the needle holder which
must be hollow its whole length or a portion of its length, as an axis, on which a
bobbin carrier is made to rotate. This bobbin carrier is so fixed on the needle holder,
that while it is perfectly free to rotate on it, yet at the same time is stationary in the
direction of movement of the needle holder.
My second improvement is the construction of the bobbin carrier, which is composed
of two parts; one part having a spur pinion on the end of a short tube, the other part
having a flange on the end of a short tube; these tubes are made to socket on each
other a portion of their length, and then to interlock by a slight movement sideways,
thus forming an axis for the bobbin on which the extra thread is wound. On the
flange end of the bobbin carrier is fixed a guide to conduct the extra thread to the
surface of the fabric. .

page_text: My third improvement is the arrangement of a spur wheel at each extremity of the
machine and connecting them by means of an endless chain or perforated metallic
band. Movement is imparted to only one of the spur wheels, the endless chain or
band moving the other. The movement may be continuous in one direction or vice-
versa, and may be alternated by self-action of the machine or at the will of the operator.
The endless chain or band is geared in the spur pinion of the bobbin carrier, so that
when motion is imparted to the spur wheels the endless chain or band communicates
the required motion to the bobbin carrier whose guide conducts the extra thread to the
surface of the fabric, and there twists it once round the needle thread at every stitch,
thus sewing it on the fabric. The invention is applicable to the single needle machine,
and to the Swiss shuttle machine with several hundred needles.
The disposition of the various parts of this invention will be better understood by
reference to the accompanying drawing. I have purposely avoided complicating the
drawing by omitting any portions of the framework of the ordinary Świss shuttle
embroidering machine, as they are well known, and have simply confined myself to
illustrating the parts of my invention.
Fig. 1 represents a front elevation of the invention; A A are two spur wheels
arranged in position at each end of the machine. B is an end view of one spur pinion
forming one part of the bobbin carrier. C is the flange of the other part of the bobbin
carrier on which is fixed the extra thread guide E. D is the endless chain or band.
A is the needle holder forming the axis of the bobbin carrier.
Fig. 2 is an end elevation of the saine. The reference letters apply to this figure
also. E is the guide conducting the extra thread from the bobbin to the surface of
the fabric represented by the line g.
Fig. 3. a. represents the two parts of the bobbin carrier united; b, the pinion part,
and c the flange part, d is another view of c shewing the guide E.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. The use of the hollow needle holder as an axis on which a bobbin carrier is made
to rotate.
2. The construction and use of a novel kind of bobbin carrier with a guide thereon
for the extra thread.
3. The arrangement of two spur wheels and an endless chain or perforated band to
communicate a rotatory motion to the bobbin carriers and guides of the extra threads,
substantially as described and illustrated in the drawing annexed.
Dated the 15th day of July 1890.
DWIN DONCULTY
EDWIN DOUGHTY