CERTAIN IMPROVEMENTS IN SEWING MACHINES AND IN APPARATUS FOR WINDING THE THREAD ON THE REELS OR SPOOLS OF SEWING MACHINE SHUTTLES."
Year: 1877

page_text: LETTERS PATENT to James Warwick, of Manchester, in the County of Lan-
caster, Patent Sewing Machine Manufacturer, for the Invention of "CERTAIN
IMPROVEMENTS IN SEWING MACHINES AND IN APPARATUS FOR WINDING THE
THREAD ON THE REELS OR SPOOLS OF SEWING MACHINE SHUTTLES."
PROVISIONAL SPECIFICATION left by the said James Warwick at the
Office of the Commissioners of Patents on the 29th August 1877.
"
JAMES WARWICK, of Manchester, in the County of Lancaster, Patent Sewing.
Machine Manufacturer. CERTAIN IMPROVEMENTS IN SEWING MACHINES AND IN
APPARATUS FOR WINDING THE THREAD ON THE REELS OR SPOOLS OF SEWING
MACHINE SHUTTLES."
My Invention consists in so constructing sewing machines that by a combination
of parts of certain well-known machines a high or rapid rate of speed may be
obtained.
In performing my Invention I use a rotating hook and spool similar to those
used in the well-known Wheeler and Wilson sewing machine, but I prefer to so
shape the hook as to be able to turn it in the opposite direction. I attach the
above hook to the well-known Willcox and Gibbs' system of sewing machine, in
order to produce a lock stitch instead of the chain stitch, as usual, but it may be
attached to other machines for the same purpose. By this combination a lock stitch
is obtained at a high or rapid rate of speed.
My improvements in apparatus for winding the thread on reels or spools of
shuttles for sewing machines consist in winding the thread more evenly than here-
tofore, whereby the said reels or spools will hold a greater length of thread, and a
more uniform tension is obtained.
1
In performing my Invention I prefer to use the usual lever to guide the thread
on the reel or spool, but I make the top part of the lever flat at the side instead of
the top, as hitherto, and I place a spring on the flat part of the lever; this spring.
Prine B71

page_text: is held by a screw, which when turned in or out will put more or less pressure on
the spring, and thus regulate the tension on the thread, which passes between the
spring and the lever.
The lever may be fixed in various ways, but I prefer to fix it in a loose bracket,
so as to be able to adjust it to the reel or spool. I also place a boss in front of the
usual winder bracket, in which is a spring and stud, and on the end of the stud is a
plate which, when acted upon by the spring, presses on the thread as it is being
wound on the reel or spool. When the reel or spool is full the plate may be turned
to one side out of the way of the spool. A slot is cut in the back part of the
usual winder bracket, in which fits a part of the plate to keep it steady when
in use.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Warwick in the Great Seal Patent Office on the 27th
February 1878.
JAMES WARWICK, of Manchester, in the County of Lancaster, Patent Sewing
Machine Manufacturer. " CERTAIN IMPROVEMENTS IN SEWING MACHINES AND IN
APPARATUS FOR WINDING THE THREAD ON THE REELS OR SPOOLS OF SEWING
MACHINE SHUTTLES."
My Invention consists in so constructing sewing machines that by an improved
combination of parts of certain well-known machines a high or rapid rate of speed
may be obtained.
In performing my Invention I use a rotating hook and spool similar to those
used in the well-known Wheeler and Wilson sewing machine, but I prefer to so
shape the hook as to be able to turn it in the opposite direction. I attach the
above hook to the well-known Willcox and Gibbs' system of sewing machine, in
order to produce a lock stitch instead of a chain stitch, as usual, but it may be
attached to other machines for the same purpose. By this combination a lock stitch
is obtained at a high or rapid rate of speed.
.
My improvements in apparatus for winding the thread on reels or spools of
shuttles for sewing machines consist in winding the thread more evenly than here-
tofore, whereby the said reels or spools will hold a greater length of thread; and a
more uniform tension be obtained.
This part of my Invention will be fully understood on reference to the accom
panying Sheet of Drawings, in which,
Fig. 1 is a front view of my improved winding apparatus.
Fig. 2, a side view; Fig. 3, a plan; and Fig. 4, an elevation of part of an ordinary
sewing machine to which the improved winding apparatus is applied.
a is the reel or spool, supported at one end in a spring centre b, and at the other
in the centre c, from which projects a peg taking into a hole in the end of the reel
or spool. On the spindle of the centre c is the pulley d, covered with india-rubber;
this pulley is driven as usual by friction from the hand wheel e (see Fig. 4), forming
part of an ordinary sewing machine.
The frame f, supporting the reel or spool, is connected to the plate of the sewing
machine by the screw ġ, and to this frame is secured the upright /, shewn detached

page_text: in Fig. 5, the distance of the upright from the spool being regulated by the screw i,
which passes through a slot in the foot of the upright.
The spindle j is supported by the upright h, at the upper end of which is the
usual lever k to guide the thread on the reel or spool, but I make the top part of
the lever flat at the side instead of the top, as hitherto, and I place the spring on
the flat part of the lever; this spring is held by a screw, which when turned in or
out will put more or less pressure on the spring, and thus regulate the tension on
the thread, which passes between the spring and the lever.
The lever k may be supported in various ways, but I prefer to support it in the
standard h, so as to be able to adjust it to the reel or spool. I also make a boss in
front of the usual frame f, in which is a spring and stud, and on the end of the stud
is the plate m, which, when acted upon by the spring, presses on the thread as it
is being wound on the reel or spool. When the reel or spool is full the plate m may
be turned to one side out of the way of the spool.
The mode of operation is as follows:-The thread on leaving the bobbin a, see
Fig. 4, is taken through the guide wire o, then into the hook k', then between the
lever i and spring 7, where the requisite tension is given, then through a groove in
the end of the lever k to the reel or spool a, on which it is wound. As the thread
is wound on the spool or reel the lever k swivels to and fro to distribute it evenly,
and as the thread accumulates on the reel or spool the pressure of the thread on the
plate m overcomes the resistance of the spring acting on the plate. When the reel
or spool is full the plate m is turned to one side to allow the full reel or spool to be
taken out, and an empty one put in its place. By this means a uniform tension,
which is capable of being easily varied, is obtained, and the thread is wound on the
reel or spool under sufficient pressure to ensure a greater length being wound on
than was hitherto practicable.
Having thus stated the nature of my Invention, and described the mode of per-
forming the same, I declare that I claim,-
First. The improved combination of the rotating hook and spool, forming part of
the Wheeler and Wilson sewing machine, with the Willcox and Gibbs or other
system of sewing machine, in order to obtain a lock stitch at a rapid rate of speed,
as described.
Secondly. The adjustable bracket h attached to the frame f supporting the reel or
spool, as shewn and described.
Thirdly. The lever k flattened at the side and the adjustable spring 1 for varying
the tension on the thread by means of a screw, as shewn and described.
And, Fourthly. The pressure plate m and the mode of applying pressure to it, as
shewn and described.
In witness whereof, I, the said James Warwick, have hereunto set my hand
and seal, this Twenty-third day of February, One thousand eight hundred
and seventy-eight.
JAMES WARWICK. (L.S.)