Improvements in Sewing Machines.
Year: 1892

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Date of Application, 11th Feb., 1892
Complete Specification Left. 28th Oct.. 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Sewing Machines.
I, DENIS FLANAGAN, of Clayton le Moors, in the County of Lancaster, Iron
Fettler, do hereby declare the nature of this invention to be as follows:-
This invention consists, of improved apparatus, for operating or working the.
needle bar, and needle. Secondly, improved appliances, for operating or working..
the feed. Thirdly, improved spool carrier, and loop former, adapted for ordinary
wood bobbins.
For operating the needle bar, and the tension bar, I employ a link, operated by
a disc, at the end of the first driving shaft, the outer end of the link is cranked,
and forms a clip, attached to the needle bar, which it works; attached to the
needle bar, by a boss, is a hollow casting, in which is formed a curved race, and
opposite which, on a hinged pin, is loosely mounted, a switch. The tension bar, is.
provided with a cranked finger, and projecting pin; the latter works, along the
curved race, and down the switch, and imparts the requisite motion, to the tension
bar, for taking up the slack, of the thread..
The feed motion, is effected and controlled, by a series of cranks, operated from.
bottom shaft, one of the cranks, having a long slot, in which is secured a con-
trolling or regulating pin, the latter is adjustable, by screw elevator, whereby the
position of the said pin, in the slot, is regulated, so that as the pin, is adjusted in
the slot, higher or lower, so will the action of the slotted link, be curtailed, and
the length of stitch regulated accordingly.
The spool carrier, and loop former, comprise, a crank, on the driving shaft, and.
a link connected at its lower end, by pin to a rocking crank, carried by bracket,
from underside of the bed plate; a pin at end of crank, is received, in a long slot,
formed in a crank, on the bottom shaft of the machine, which works the loop
carrier, the end of the latter, is V shaped, and carries the loop, over a V. pro-
jection, on the outside of the spool or bobbin, container, latter consists, of a tubular
receptacle, for ordinary wood bobbin, the bottom of which container, is in form, of
an inverted cone, the point of which facilitates the passage of the loop, around or
over the spool container.
The spool carrier, is mounted on hinged holders, which can readily be turned
outwards, on a hinge, so as to facilitate replacement of spool, or bobbin.
The driving wheel, may be turned in either direction, but the working parts will
operate, only in the correct direction, for stitching.
Dated this 10th day of February 1892.
WALTER BRIERLEY,
Bank Chambers, Waterhouse Street, Halifax, Agent for the Applicant.
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COMPLETE SPECIFICATION.
Improvements in Sewing Machines.
I, DENIS FLANAGAN of Clayton-le-Moors, in the County of Lancaster Iron
10 Fettler, do hereby declare the nature of this invention and in what manuer the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates Firstly to improved apparatus for operating or working
the needle bar and needle. Secondly. Improved appliances for operating or working

page_text: the feed. Thirdly. Improved spool carrier, and loop former adapted for ordinary
wood bobbins or reels.
For operating the needle bar and the tension bar I empley a link operated by a
disc at the end of the first driving shaft, the outer end of the link is cranked and
forms a clip attached to the needle bar which it works, attached to the needle bar
by a boss is a hollow casting, in which is formed a curved race and opposite which
on a hinged pin is loosely mounted a switch or a cam groove or a race is formed in
the disc first mentioned.
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The tension bar is provided with a cranked finger and projecting pin; the latter
works along the curved or cam race and down the switch, and imparts the requisite.
motion to the tension bar for taking up the slack of the thread. The feed motion
is effected and controlled by a series of cranks operated from the bottom shaft, one
of the cranks having a long slot in which is secured a controlling or regulating -
pin, the latter is adjustable by screw elevator whereby the position of the said pin
in the slot is regulated so that as the pin is adjusted in the slot higher or lower, so,
will the action of the slotted link be curtailed and the length of stitch regulated
accordingly.
The spool carrier and loop former comprise a crank on the driving shaft, and a
link connected at its lower end by pin to a rocking crank carried by bracket on the
underside of the bed plate a pin at the end of the crank is received in a long slot
formed in a crank on the bottom shaft of the machine, which works the loop carrier
the end of the latter is V shaped and carries the loop over a V projection on the
outside of the spool or bobbin container. The spool or bobbin container consists of
a tubular receptacle for ordinary wood bobbins or reels the bottom of which con-
tainer is in form of an inverted cone, the point of which facilitates the passage of
the loop around or over the spool.container.
The spool carrier is mounted on hinged holders which can readily be turned.
outwards on a hinge, so as to facilitate replacement of spool or bobbin.
The driving wheel may be turned in either direction, but the working parts will
operate only in the correct direction for stitching.
Such being the nature and object of my said invention, the following is a
complete description of same reference being had to the accompanying drawings in
which,
7.
Fig. 1 is a side elevation of a sewing machine having my improvements applied
thereto part of the shell of the machine is shewn broken away in order to shew the
interior.
Fig. 2 is an end elevation of Fig. 1.
Fig. 3 is a side elevation of part of a sewing machine shewing an alternative
method of operating the tension bar.
Fig. 4 is an end elevation of the feed motion drawn detached and without the
adjustable screw elevator.
Fig. 5 is a similar view to Fig. 4 but the adjustable screw elevator is shown.
Fig. 6 is a front elevation of the spool or bobbin carrier drawn detached in order
more clearly to slew its construction.
Fig. 7 is an end elevation of Fig. 6, a short piece of material being shewn under
operation and the loop carrier as having taken hold of the thread and commenced
to draw the latter round the spool carrier and loop former in the direction indicated
by the dotted line and arrow.
Fig. 8 is a similar view to Fig. 7 but the loop carrier is shewn as having advanced
and drawn the thread a little further..
Fig. 9 is another similar view the loop carrier having begun its return move-
ment the thread having slipped off its point on to and partly around the spool
carrier and loop former.
Fig. 10 shews the top thread as. having been almost entirely drawn up or
tightened by the tension bar after the loop formed by the thread has engaged with
the bottom thread, or thread carried in the spool carrier and loop former below the
bed plate.
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11 18 a plan view of Fig. 6.
Fig. 12 is a similar view to Fig. 11 with the cap or lid for holding in position
the conical part of the spool carrier remover.
Fig. 13 is a plan view of the shell part of the spool carrier drawn detached in
order more clearly to illustrate its construction.
Fig. 14 is a side elevation of Fig. 13.
Fig. 15 and 16 are diagrams shewing respectively on a large scale two pieces of
material stitched together and the relative positions assumed by the two threads
when the material is stitched.
According to this my said invention at 1 is a hand-wheel for operating the
machine but it will be obvious that this wheel may be turned by foot or other
power 2 is the main shaft driven by the wheel 1 and on one end of this shaft 2 is a
disc 3 (see Figs. 1 and 2) on which is loosely mounted the link 4 the outer end of
which is cranked, and forms a clip 5 which partly encloses the needle bar 6 and is
attached thereto by pin 7. Behind the disc 3 and on the shaft 2 is the boss 8 in the
circumference of which is formed the cam groove or race 9. Mounted on a
fulcrum pin 10 outside the shell or frame of the machine is the tension bar 11
which consists of a bell crank lever and through the short arm of such lever or
bar 11 is fixed the pin 12 the end of which extends into the cam groove or race 9.
On the main shaft 21 form a crank 13 operating a vertical link 14 the lower end of
which is attached to about the middle of the crank 15 latter being carried by the
pin 16 fixed in the bracket 17 cast to the underside of the bed plate 18. The outer
end of the crank 15 carries a pin and slide piece 19 and the latter works in the
groove or slide bed 20 in the crank 21 fixed on the bottom shaft 22 the latter being
carried by the brackets 17 cast to the underside of the bed plate 18 of the machine.
The end of the bottom shaft 22 carries the cranked lever 23 in one arm 23 of which
is fixed the loop carrier 24, and the other arm of the lever 23 is by link 25 attached
to the crank. 26 fixed on the short shaft 27 carried in the bracket 28 fixed to the
underside of the bed plate 18. On the end of the shaft 27 is a crank 29 (see
(Fig. 1) which operates the crank 30 in which is the long slot 31 (see
Fig. 4) and in this slot 31 is received the regulating pin 32 carried in the block 33
which is adjusted by the screw elevator 34 so that as the regulating pin 32 is moved
by the screw elevator nearer to or further from the centre of motion of the crank
so will a greater or less amount of motion be imparted to the slotted part of the
crank 30: A second pin 35 (see Figs. 1 and 4) is received in the slot 31 and this
pin 35 is fixed to the sliding serrated feed bar 36 and gives the requisite to and fro
motion to said feed bar. When the feed bar 36 moves in a forward direction, or
in the direction in which the material under operation passes, it is necessary that
the serrations should protrude slightly above the bed plate 18 so that the serrations
lay hold of the material and carry it forward as ordinary. To cause the serrations
to protrude at the right time I' employ a tappet 37 on the short shaft 27 and this
tappet 37 acts on one end of a curved lever 38 mounted on a fulcrum stud 39 and
the other end of the curved lever 38 acts on the serrated end of the feed bar 36
slightly lifting same. A spring 40 (see Figs. 4 and 5) causes the feed bar 36 and
curved lever 38 to resume their normal positions when not acted upon by the
tappet 37, the spring 40-bearing against the underside of the bed plate 18. The
feed bar 36 is carried loosely in bearings 41 fixed to the underside of said bed
plate 18. The spool or reel carrier and loop former consists of a cylindrical
shell 42 the bottom of which is of the shape of an inverted, cone, and at the top
and front of the shell is a V projection 43. At the back of the shell 42 is a
vane 44 which extends to the top of the shell and when the latter is in position
in the frame 45 the upper end of the vane 44 is received in a recess 44* (see Fig. 12)
in such frame. The frame 45 is merely a skeleton there being a ring 47 at the top,
which ring is cut away, or an opening 48 left in it and in this opening 48 the end
or point of the V projection 43 is received. The bottom of the shell 42 rests be-
tween and on the two guides 49-49 and a hinged annular ring or cover 50 holds

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the shell 42 in position said ring or cover 50 being held down on the frame
by the spring catch 51.
The frame 45 has a boss 53 cast to it and this boss 53 is received on the stud.54
(see Fig. 1) fixed to the underside of the bed plate 18 and on the stud 54 beneath
the boss 3 is a spiral spring 55 which allows of the frame. 45 and shell 42 being
depressed until the pin 56 on the boss 53 is withdrawn from the hole 57 in the
flange of the stud 54 or in the bed plate 18 so that the frame 45 and shell 42 can
readily be turned round on the stud 4 until the shell 42 is directly under a sliding
door or opening made in the bed plute 18 so that a reel or bobbin can readily be
inserted or removed from the interior of the shell 42 which is provided with a
..central spindle 56" on which the reel or bobbin is placed 58 is the ordinary pressure
foot held in the down position by the spring 59 and raised by moving the pin 60 up
the incline 61 fixed to the shell of the machine.
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An alternative method of operating the tension bar 11 is shewu in Fig. 3 where
the pin 12 works in the cam race or groove 9 formed in the lug 62 which is fixed
on the needle bar 6 and as the latter rises and falls the cam groove or race 9
gives through the pin 12 the requisite motion to the tension bar 11. At 63 is a
switch held in the position shewn by spring (not shewn in the drawings) so that
when the machine is set in motion the pin 12 is caused to travel always in the
,same direction and it will be obvious that in this case the hand or other wheel 1
should be always turned in one and the same direction. When apparatus as
shewn by Figs. 1 and 2 is employed whichever way the hand or other wheel 1
is turned the remaining parts of the machine always turn in one the working
direction.
The pin 35 is preferably covered with rubber or other soft material to deaden
the noise or rattle caused by the sides of the slot 31 coming in contact therewith.
It will be obvious that reels or bobbins of any size less than the interior of the
shell 42 can be employed in connection with the machine.
The action is as follows:-One reel or bobbin containing thread marked A. is
carried on a spindle 65 on the top of the machine. A second reel or bobbin con-
¡taining thread is placed in the reel container 42 and the thread from this reel is
marked B.
The thread A passes from its reel through the guide eye 66 to and round an
ordinary tension 67 thence through the eye 68 in the tension bar 11 to and through
the eye in the guide 69 and afterwards through the eye in the needle 70.
The thread B passes from its reel through the slots 71 71. (see Fig. 6) in the
shell 42 (which slots put a little "drag" on the thread) and through the hole 76
in the shell 42.
Both threads A and B are brought to the top of the bed plate either by giving
a few turns to the wheel 1, or by "threading." The material 72 to be stitched
is then placed in position in the ordinary manner and the wheel 1 is then con-
¡tinuously turned.
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When the needle 1 has passed the thread A through the material the hook or
loop carrier 24 lays hold of the thread between the eye of the needle, and the
material under operation (see Fig. 7), the tension bar being at its lowest position
consequently the thread between the eye of the tension bar 11 and the eye of the
needle 70 is slack. The book or loop carrier moves rapidly for the space of rather
more than half a circle (as indicated by dotted lines and arrows) and when about
half its movement is completed (see Fig. 8) the loop of the thread A is divided
and crossed by the V projection 43 and the peculiar formation of the hook 24 (see
Figs. 1 and 8). When the hook 24 has moved to its limit in one direction (see
Fig. 9) the thread slips off such hook after passing between the guides 49 49 and
the thread A is now looped round the shell or loop former 42. The tension bar 11
now ascends (through the action of the cam 9) and draws up the slack thread and
loop the latter being passed under and around the, thread B (see Figs. 9 and 10)
and escaping from the loop former by way of the passage or space 77 between the

page_text: shell 42 and the annular ring 47 the loop is drawn quite tight, the thread B being
tightened by the drag put upon it.
It will be seen by referring to Fig. 15 where two pieces of material are shewn
(diagramatically) as being stitched together that the thread is passed through the
material and that when the loop is drawn up tight it (the loop) is between the upper
and lower material the thread A forming a crossed loop 74 (see Fig. 16) through
which the thread B passes.
Having now particularly described and ascertained the nature and object of my
said invention and in what manner the same is to be performed, I declare that
what I claim is :-
1. The improved spool carrier and loop former comprising the shell 42 and
frame 45 together with the loop carrier 24 as herein described and as fully illustrated
by the drawings annexed.
2. The improved spool carrier and loop former comprising the shell 42 and
frame 45 as herein described and substantially as illustrated by drawings
annexed.
3. The improved spool carrier and loop former comprising the shell 42 and
frame 45 the loop carrier 24 and the tension device consisting of the cam race 9
and cranked lever or arm 11 as herein described and substantially as illustrated by
Figs. 1, 2 and 3 of the annexed drawings.
Dated this 1st day of September 1892.
WALTER
BRIERLEY,
Penny Bank Chambers, Waterhouse Street, Halifax.