IMPROVEMENTS IN SEWING MACHINES
Year: 1869

page_text: LETTERS PATENT to Newton Wilson, of 144, High Holborn, in the
County of Middlesex, Sewing Machine Manufacturer, for the
Invention of "IMPROVEMENTS IN SEWING MACHINES."
Sealed the 15th October 1869, and dated the 20th April 1869.
COMPLETE SPECIFICATION filed by the said Newton Wilson at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 20th April 1869, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, NEWTON
WILSON, of 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.

page_text: NOW KNOW YE, that I, the said Newton Wilson, do hereby declare
that the following Complete Specification, under my hand and seal,
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:—
These improvements relate to certain combinations in detail as
connected with both "one" thread and "two" thread sewing machines,
namely, the single thread or chain stitch and the double thread lock-
stitch machines, and also in a new combination and improvement in what
is termed the silent feed; also in combining the several improvements
herein specified in combination with an improved mode of internal
driving wheel and pinion as patented by me, bearing date the Fourtecuth
day of February 1866, Number 475.
Figures 1, 2, 3, and 4 relate to certain improvements for driving the
shuttle of what is termed a two thread or lock-stitch machine. Figure 1
represents a side elevation of the lower part of the machine wherein is
contained the shuttle and shuttle race and driver, and also the mode of
driving the shuttle by means of a crank plate wheel and crank pin
attached thereto at a proper distance from the centre to give the
necessary throw or traverse to the shuttle, the said crank pin to have a
"free bloek" working thereon, which works and slides into a rect-
angular slott plate, producing the reciprocating motion to the driver
which drives the shuttle. Figure 2 is a front view of the same.
Figures 3 and 4 represent two distinct positions of the crank plate wheel
and crank pin with the "free block" working thereon, which works
into the rectangular slott plate.
Figures 5, 6, and 7 represent another mode of driving the shuttles
of shuttle machines, which works on the upper face of a vibrating
quadrant, working and vibrating on a centre pin on the lower end, and
moving the shuttle on its upper surface in the arc of a circle, instead of
working or driving the shuttle in a shuttle race, the new feature being,
in this arrangement, the mode of driving the arc carrying the shuttle by
means of a crank and crank pin working into a long slott in the face of
the radius arm.
Figures 8, 9, and 10 represent a side and front elevation of a single
stitch or chain stitch machine of the general mode of construction, but
in combination with my improved internal driving wheel and pinion as
patented by me and before referred to.

page_text: томон пош Саша produce a лош
motion by and through certain new and original means to a compound
serrated feed plate, producing what is technically termed a "silent
feed." Figure 11 represents a compound feed with a cam and bridle
piece, producing the movements direct from the bridle without the
intervention of a lever as now in use. Figure 12 represents a plan of
the same. Figure 13, a section shewing the loop of the bridle in contact
with the cams, and the connection of the loop with the double compound
feed plates.
Chapter 1. Figure 1. A, the lower driving shaft of the machine,
which is either driven by external gearing or my improved internal
wheels; B, a crank plate wheel, on to which is affixed a crank pin C and
"free block" D working on the pin C. This pin is situated so far from
the centre of the shaft A. as to represent one half the traverse of the
shuttle driver, which is affixed on the top of the rectangular slott
plate F, as shewn in two positions in Figures 3 and 4. This slott plate,
which has a rectangular slott or gap cut into it, allows the shaft A to
pass freely and revolve through it in the vertical slott while it is in
motion without coming into contact with the slott plate, and passes out
through the front bearing G, which shaft has an "overneck" A' pro-
jecting in front, on to which are attached the two cams H and I, which
actuate the cam plate J, producing an upward, forward, downward, and
backward motion to the serrated feed plate K, or what is termed the
"four-motion feed," by means of the cam H working against the vertical
surface L of the cam plate J, and the cam I working against the
horizontal surface M, which produces the lifting movement to the feed.
The cam plate J has a slott O, which works and rests on the pin P
fastened to the body of the machine. In this slott there is a spiral
spring Q in the space intervening between the pin and the end of the
slott so as to keep the face of the cam plate always up to the feed
regulator R, which regulates the length of the feed from left to right
for short or long stitches. There is a curved or cam-shaped end S to
this feed regulator R, which limits the length of the forward throw
of the feed, the difference being taken up by the spring Q. The
serrated feed plate K is fastened on to the cam plate J by the screw T
through the slot U, so that it can be adjusted at any time. It will be
readily seen that as the rectangular slot plate F projects over the guide

page_text: of the shuttle race V the driver W, which drives the shuttle X, is
fastened on to the top of the rectangular slott plate F, so that a perfect
reciprocating motion is given to the shuttle by the simple method before
described, allowing at the same time the feed shaft A to pass through
the front of the machine, and thereby obtaining a direct feed motion.
Chapter 2. Another method of driving the shuttle in shuttle
machines is represented in Figures 5, 6, and 7. a, a, a vibrating lever
working on a centre pin b; on the top of this lever there is a recess c,
into which is dropped freely the shuttle d. This vibrating lever has a
rocking or reciprocating motion given to it by and through the lower
reciprocating shaft e, which receives motion from the upper or needle
shaft of the machine through an eccentric and link connection. On the
end of the shaft e is a reciprocating crank f, on to which is attached a
pin g, which works in a slot h in the vibrating lever a, so that a reci-
procating movement is given to the shuttle from right to left and left
to right by the novel means herein set forth.
up
Chapter 3. Figures 8 and 9 represent a side and front elevation of
the single-stitch machine; Figure 10, a section of the same shewing
the feed movement. A, the driving wheel running freely on a dead
spindle B, which is affixed to the standard C. This driving wheel A has
on its "internal revealed" rim" internal teeth D, D, D, continuing
all around, as shewn by the dotted lines in Figure 9, and also in sectional
view, Figure 8. These internal teeth drive the pinion E, which is affixed
to the needle shaft F driving the needle slide G through the cam piece H
and down in the ordinary way. On the other end of the needle shaft F
and on the face of the pinion E there is a crank pin E', which actuates
a connecting link J, which actuates a lever K fastened on the back end
of the lower shaft L. This shaft gives a reciprocating motion to the
crotchet hook M, which picks up and releases the loop in the ordinary
way by and through the reciprocating movement of the compound
crotchet hook, having a spring piece N attached thereto. Between this
spring piece N and the crotchet hook M there is a space, into which
the needle passes on its downward stroke, picking off or releasing the
loop by the needle slipping or releasing itself between the face of
the hook M and the spring N. The feed movement, as represented
in Figure 10, is produced and obtained from the lower reciprocating
shaft L, on which is attached a block O, in which is a hinged joint P,
in which works the lower end of the serrated feed plate Q. The reci-

page_text: procating motion of the shaft gives a backward and forward motion
to the feed plate Q, which is limited in its forward movement by the
feed regulator R through the peculiar cam shape of the front of the
regulator, as described in the previous chapter. The whole of the before-
mentioned arrangement being novel in connection with the internal
driving gear, as herein fully described, and also shewn in Figures 8,
9, and 10.
Chapter 4. Figures 11, 12, and 13 represent in detail a new method
of obtaining motion from the driving shaft for giving motion to and
actuating a compound silent feed. Figure 11 is an elevation shewing
the compound silent feed; Figure 12 a plan of the same; Figure 13, a
section shewing the loop of the bridle piece in actual contact with the
cam and its connection with the double compound feed. A, the axis
or driving shaft of the sewing machine commonly known under the
name of a Wheeler and Wilson machine; B, the driving pulley, on
the end of which is a face cam C and a lifting cam D, as shewn in
Figures 13 and 11, which cams actuate the silent compound feed move-
ment, and is in fact what is called a four-motion feed. The movements
given to the serrated plate are upwards, forward, downwards, and back.
The up-and-down movements are by the cam D actuating the bridle G,
on the top of which is a rectangular slide piece F, which carries the
serrated feed plate E, the end of which comes into contact with the face
cam C, and is held or kept up to its position by the spring H. As the
cam C revolves the backward and forward motion of the serrated feed
plate E is produced, thereby completing in a revolution of the shaft A all
the necessary four movements of the feed, as before stated.
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe that I do not confine myself to the
precise conformation of parts, as they may be departed from as long as
the main elements of these various contrivances in construction are
adhered to; but what I consider to be novel and original, and therefore
claim as of my Invention is,-
Firstly. The arrangement and construction of the several parts as
shewn in Figures 1, 2, 3, and 4 in the Drawings, and described in
Chapter of this Specification, of the mode of obtaining motion for
driving the shuttle and feed movement in lock-stitch sewing machines.

page_text: And, secondly. The arrangement and construction of the several parts,
as shewn in Figures 5, 6, and 7 in the Drawings, and also described in
Chapter 2 of this Specification, for driving and giving motion to the
reciprocating radial arm for passing a shuttle from right to left and left
to right in lock-stitch sewing machines.
And, thirdly. The arrangement of a single or chain stitch sewing
machines in combination with my late improved internal driving wheel
and pinion for obtaining a more rapid motion to the needle in the same
space, as shewn in Figures 8, 9, and 10, and fully described in Chapter 3
of this Specification.
And, fourthly. The arrangement and combination of a silent feed
movement as adapted to that class of sewing machines as described in
Chapter 4, wherein the silent compound feed is driven by a bridle and
cam movement in combination, as shewn in Figures 11, 12, and 13, and
fully described.
In witness whereof, I, the said Newton Wilson, have hereunto
set my
hand and seal, this Nineteenth day of April, in the
year of our Lord One thousand eight hundred and sixty-nine.
Witnessed by
GEORGE MABBOTT.
THO. W. WILLIAMS.
NEWTON WILSON. (L.s.)