Year: 1887

page_text: Date of Application, 8th Jan, 1887
Complete Left, 10th Oct., 1887
Complete Accepted, 11th Nov, 1887
We JAMES MORRIS O'KELLY, Mechanic, of 12 Compton Street, Soho, and HENRY
SAMUEL RUSSELL, Stockbroker, of 1 Crown Court, Threadneedle Street, both of
London in the county of Middlesex, do hereby declare the nature of this invention to
be as follows :—
This invention relates to certain improvements in sewing machines and consists in a
novel combination of parts forming a lock stitch sewing machine, the object being to reduce
as far as possible the number of parts and thus produce a simple and efficient machine
at a low cost of manufacture. The machine is of the vertical type and may be provided
with a table clamp, or bed plate in the usual manner. The upper part of the vertical
frame is made horizontal to act as a guide for the needle bar and the work table is
attached to the vertical part in suitable position.
A hand wheel is centred on the back of the frame and its shaft passes through the
frame and carries a crank at its free end. The pin engages with a slotted cross piece
fixed upon the needle bar so that on rotation the required vertical alternating motion
is given to the needle bar.
The crank, is of the disc type but its periphery is formed of an elliptical or
cam shape and against it the upper end of a bent lever of suitable curvature
engages. This bent lever is centred on the frame and its lower end carries the
usual presser foot.
The lever is slotted so as to be capable of movement in a vertical direction to suit
any thickness of fabric, and its vibrating motion, by which the length of stitch is
regulated, is controlled by an adjusting screw. The figure of the cam formed on the
periphery of the crank disc is such, that on rotation, it gives the required motion in
one direction to the lever which both feeds the work forward and presses it down
during each stitch and its return motion is ensured by a suitable spring or
equivalent.
The shuttle race is straight and fixed below the work table.
The shuttle, which may be of any suitable known type is placed in a carriage having
two or any convenient number of fingers or pins on its outer surface and is preferably

page_text: worked to and fro horizontally in the race by a rocking lever provided with fingers or
pins engaging with those on the shuttle carriage. The said rocking lever is fixed to
and receives its motion from a horizontal oscillating shaft passing through a bearing
in the frame and provided at its back extremity with a slotted, forked, or other
suitable arm, cam wheel, eccentric, or equivalent, with which a stud fixed to the bottom
end of a rocking lever centred on the back of the frame engages. The lever is of a
suitable curved or bent form to provide against undue strain or friction caused by the
oscillating motion of the shaft which it drives. This lever is provided at its upper end
with a stud which engages in a slot of suitable shape cut or formed in a plate fixed on
the main driving shaft and rotated thereby.
All studs and working surfaces are provided with suitable anti-friction rollers or
other appliances for reducing friction and ensuring smooth working.
The reel is placed on a spindle preferably at or about the top of the frame and
the thread passes through any suitable tension arrangements to the needle eye.
Dated this Eighth day of January 1887.
J. C. CHAPMAN,
70, Chancery Lane, W.C.,
Agent for Applicants.

page_text: We JAMES MORRIS O'KELLY, Mechanic of 12 Compton Street, Soho, and HENRY
SAMUEL RUSSELL, Stockbroker of 1-Crown Court, Threadneedle Street, both of London
in the county of Middlesex do hereby declare the nature of this invention and in what
manner the same is to be performed to he particularly described and ascertained in
and by the following statement:—
This invention relates to certain improvements in sewing machines and consists in a
novel combination of parts forming a lock stitch sewing machine, the object being to
reduce as far as possible the number of parts and thus produce a simple and efficient
machine at a low cost of manufacture.
A machine .constructed in accordance with our invention is illustrated in
the accompanying drawings. Figures 1, 2 and 3 are front, back, and side
elevations respectively; Figure 4 is a side elevation of a machine with multiplying
gear, and figure 5 an alternative detail. In all the figures like letters represent
like parts.
The machine is of the vertical type and may be provided with a table clamp as
illustrated at a, or it may be mounted on a suitable bed plate if desired; A is the
vertical frame the upper part of which a' is made horizontal and utilized as a guide
for the needle bar B C is the usual work table attached to the vertical frame A in
suitable position. The operating wheel H, which may be driven by manual or other
power as required, is centred on the back of frame A, its shaft h passes through a
suitable bearing therein and its free end carries a crank D the pin d of which engages
in the slot of a slotted cross head 6 fixed upon the needle bar, so that on rotation of the
crank the required vertical alternating motion is given to the said needle bar. The
crank D is of the disc type but its periphery is formed of a suitable elliptical or cam
shape, and against it the upper end of a vibratory hent lever d'engages. This lever d¹
is centred upon the frame about d² and is slotted and provided with an adjusting
screw by which its vertical position can be adjusted to suit any thickness of fabric.
The vibrating action of the lever d' by which the length of the stitch is regulated is
controlled by an adjusting screw d³ arranged as illustrated, and the usual presser foot
is provided on its lower end. The figure of the cam formed on the periphery of the
crank disc Dis such that on rotation it gives the required motion in one direction to
the lever d¹ which both feeds the work forward and presses it down during
each stitch and its return motion is ensured by a suitable spring such as d* or
equivalent.
The shuttle is arranged below the work table Cand the shuttle races may be straight
as shown in figures 1, 2, and 3, but we prefer to form it segmental in the usual manner
as illustarted in figures 4 and 5. A shuttle of any suitable known type is placed in a
carriage S which where a straight shuttle race is employed has two or more fingers or
pins on its outer surface, and it is worked to and fro horizontally in the race by the

page_text: angular motion of a lever R also provided with fingers or pins engaging with those s¹
on the shuttle carriage S. Where a segmental race is adopted one fingers only is
required which is embraced by a simple bifurcation r¹ on lever R as illustrated in
figure 5. In either case the lever R is fixed to and receives its angular motion from a
horizontal oscillating shaft K journalled through a bearing in the frame A, and provided
at its back extremity with a slotted fork k or other suitable arm, cam wheel, eccentric,
or equivalent with which a stud p fixed to the bottom end of a rocking lever P engages.
The lever P is centred on the back of the frame A and is of a suitable curved or bent
form so as to provide against undue strain or friction caused by the oscillating motion
of the shaft K which drives. The lever P is provided at its upper end with a stud pl
which engages in slot t cut or formed in a plate T, fixed on the driving shaft h
and rotated thereby; the figure of the slot is such as to impart the required motion
to the lever P.
All studs and working surfaces are or may be fitted with suitable anti-friction
rollers or other appliances for reducing friction and ensuring smooth working. The
reel M is placed on a spindle m preferably at or about the top of the frame A and the
thread passes through any suitable tension arrangements such as are illustrated at n n
to the needle eye.
In the machine above described one reciprocation of the needle bar is produced by
each revolution of the operating wheel H. The speed may be multiplied with great
facility by the arrangement shown in figure 4 by centreing the wheel lower down on
the frame and providing it with a tooth wheel gearing with a pinion in any
suitable proportion. In the figure a ratio of three to one is shown, so that one revolu-
tion of the wheel H will produce three revolutions of the pinion ² the spindle of
which is fitted in the same way, and is equivalent to the spindle h herein above
described for the wheel H. By this arrangement the machine is smaller and more
compact while increased working efficiency is obtained.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. The combination and arrangement of parts forming the hereinbefore described
sewing machines, all acting in unison one with another as and for the purposes
set forth.
2. The arrangement of parts for driving the shuttle and the combination therewith
of the mode of actuating same substantially as set forth.
J. C. CHAPMAN,
70, Chancery Lane, W.C.,
Agent for Applicants.