IMPROVEMENTS IN SEWING MACHINES
Year: 1868

page_text: LETTERS PATENT to Newton Wilson, of No. 144, High Holborn, in
the County of Middlesex, Sewing Machine Manufacturer, for the
Invention of "IMPROVEMENTS IN SEWING MACHINES."
Sealed the 30th April 1869, and dated the 9th November 1868.
COMPLETE SPECIFICATION filed by the said Newton Wilson at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 9th November 1868, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, NEWTON
WILSON, of No. 144, High Holborn, in the County of Middlesex, Sewing
Machine Manufacturer, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
SEWING MACHINES," and have petitioned Her Majesty to grant unto me,
my executors, administrators, and assigns, Her Royal Letters Patent for
the same, and have made solemn Declaration that I am the true and first
Inventor thereof, and that the same is not in use by any other persón
or persons to the best of my knowledge and belief.

page_text: NOW KNOW YE, that I, the said Newton Wilson, do hereby
declare that the following Complete Specification, under my hand
and scal, fully describes and ascertains the nature of the said Invention,
and in what manner the same is to be performed, in and by the
following statement:―
My Invention relates particularly to that class of sewing machines,
known under the name of shuttle machines, or in any machines wherein
an equivalent for a shuttle is used, such as a bobbin or reel shuttle,
these improvements being principally to effect an easier method of
taking in and out the shuttle or bobbin and replacing them again in
their seatings or recesses.
Other improvements relate to the combination of certain parts of my
improved driving gear as patented by me, bearing date the 14th day of
February 1866, with a new method of obtaining a motion from the
pinion shaft to drive the lever which drives the needle slide, the whole
being a combination and new arrangement of parts constituting my
improvements in sewing machines.
CHAPTER 1. The nature of these several improvements will be
better understood by reference to the Drawings with the following
description
Figure 1 is a side elevation of my reciprocating shuttle machine;
Figure 2, a front elevation of the same; and Figure 3, a back elevation.
A, A, the body or frame of the machine; A', the arm which projects
and carries the needle slide; B, the driving wheel revolving on the
stud b, which wheel is furnished with internal teeth in the recess C
which drives the pinion D which drives the shaft E, to which is affixed
the crank plate F, into which is placed a crank pin g having a con-
necting rod G working thereon, and working at the other end on a pin h,
which is affixed to the bell crank H; this bell crank reciprocates and
moves on a centre pin I. On the other limb of the bell crank is a hinge
joint j, on which hinges the reciprocating arm of the shuttle holder J
carrying the shuttle K. In front of the shuttle holder J is a flat
spring fastened at the top end by the screw 1, and at the bottom
end m pressing against the arm of the bell crank H³ which forms the
jaws of the hinge in which the shuttle holder J works. When it is
required to take out the shuttle K the shuttle holder J is brought over
in the position of J¹ (shewn in dotted lines), when the shuttle can be

page_text: taken out and replaced much easier than drawing out tlie shuttle in the
ordinary way from the shuttle holder.
:
CHAPTER 2. Another improvement is in the manner of driving the
needle slide, which is by means of a double cam M and N affixed to the
shaft E working in a cam frame O and P. These cams are so shaped as
to perform the necessary variable movement of the needle in performing
the functions of making the loop while the shuttle passes through it;
which is common to all other machines. The cam frame O and P
works on the pin or stud Q and radiates therefrom. At the upper end
of the cam frame there is another stud or pin R, on which works the
lower end of the connecting rod S; at the upper end T it works in a
half spherical joint which connects it to the lever U, which works on
a fulcrum pin V driving the needle-slide W at the point X.
CHAPTER 3. Another important improvement in sewing machines is
represented in Figures 4 and 5, which relates to the kind of revolving
shuttle and shuttle holder used in and known under the name of the
Wheeler "and Wilson" machine; and also another machine patented
by Newton Wilson, the applicant, dated 9th April 1868, No. 1057, in
which machine there is an arrangement to release the spool from
its recess by drawing out the front of the holder on pins in a line
with the axis A. This is attended with much inconvenience, thereby
taking time to release and replace the shuttle spool from its recess. In
order to do away with these objections the front of the spool holder C
is hung with a hinge at the point D, so that instead of drawing out the
front of the casing C parallel to the axis A. it swivels on the pin D and
is drawn back in the posistion C, as shewn by the dotted lines. When
the spool is replaced it goes back again into its normal position, and is
held to its place by means of the spring E; the main object being in
this part of my improvement is to take out and replace the shuttle
spool more readily. The adjustment for the front of the casing C, so
that it may be always at right angles to the axis A, is by the binge
pin F passing through a slot and adjusted by the set screw G.
CHAPTER 4. In the driving of a "silent" shuttle by having a shuttle
carrier sliding on a wire, at the back of which there is a vertical slot,
in which a crank pin and friction roller works, the said piu being
affixed on to a crank "plate" wheel on the end of the lower shaft,
which gives a backward and forward motion to the shuttle. In com-
bination with this arrangement we have a feed motion as a "backward"

page_text: and "forward" feed only, which is produced by a cam on the end of
the shuttle shaft at the back of the crank plate wheel, while the feed
is released from the cloth in its backward movement by a small cam
on the upper shaft which raises the pressure foot.
Having now described the nature of these said improvements in
sewing machines, and the manner of performing the same, I would have
it understood that I do not confine myself to the precise arrangement
and conformation of parts as shewn in the Drawings and described in
this Specification, as they may be departed from as long as the principles
of these several improvements are strictly adhered to; but what I claim
is,―
Firstly. The manner of driving the shuttle holder and shuttle in
combination with the improved means of taking out and putting in the
shuttle by means of the hinged holder, and also the combination with
and mode of obtaining the motions by means of the cams and connecting
rod to drive the needle slide in combination with the internal wheel
and 'pinion, as described in Chapters 1 and 2, and fully shewn in the
Drawings.
Secondly. In taking in and out the spool shuttle by means of hinging
the front part of the shuttle holder with a hinge, as herein described,
instead of the method formerly used in machines of that character, and
also the combination described in Chapter 4.
In witness whereof, I, the said Newton Wilson, have hereunto set
my hand and seal, this 21st day of October, in the year of our
Lord One thousand eight hundred and sixty-eight.
NEWTON WILSON. (L.S.)