Improvements in or connected with Sewing Machines.
Year: 1890

page_text: Date of Application, 18th Aug., 1890
Complete Specification Left, 11th Nov., 1890-Accepted. 17th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Sewing Machines.
I, CHARLES BRANSTON HUNT, of The Branston Two Reel Sewing Machine Company,
Limited, 59, Holborn Viaduct, London, Gentleman, do hereby declare the nature of
this invention to be as follows:-
This invention has for object certain detail improvements connected with two reel
sewing machines for the purpose of adapting such machines for the production of
ordinary lockstitch sewing, ordinary chain stitch sewing, and an extraordinary stitch
termed a chain locked stitch, at the will of the operator, the locking being effected by
the under thread, whereby all the elasticity of the ordinary chain stitch it provided with
the advantage of the lock; and relates to :-
1. A simple method for releasing or throwing out of action the lock stitch, and the
throwing in of the chain stitch mechanism, and vice versa.
2. Means or appliances for governing the catch action and the release action of
the looper hook.
3. Means for moving an appliance into the loop while the thread is being drawn
by the "take up" and for holding the remains of the loop for the next descent of
the needle.
4. Making the shell of the under reel carrier with a spring lid and with slots for
lacing the thread for the required tension.
5. Pivotting the bracket which carries the under reel and its cage for easy removal
of reel and cage from hole in workplate and in locking the bracket when returned
for work.
6. Appliances for regulating and indicating at a glance the length of stitch desired
to be sewn.
7. The combination of the various mechanical motions above referred to in the
same machine and their employment for the respective operation of lock stitch
sewing, or of chain stitch sewing, or of chain locked stitch sewing at the will of the
operator.
For the purpose of this invention, the needle which is very short is worked in a
straight up and down manner from the upper shaft and has preferably in connection
with its rear connecting rod the appliances for effecting the take up, said appliances
being in the arm and out of sight.
The front end of the under shaft has a kind of beam lever provided with studs on
one of its faces. These studs work in slots of a similarly shaped lever mounted on an
eccentric of the under shaft for imparting a canting action to the looper hook at one
part of its circular travel for its point to take the loop, and another cant at another
part of its circular travel to release the loop and leave the thread loose for the
take up to draw in and perfect the stitch, or said levers may be from one side of
the shaft only, the change making the positions of the partial rotation different
during the circular travel of the hook, or the beams can be dispensed with and the
motions of the hook be governed by a cam arranged within range of a short beam on
the rod of the hook.
33
The bracket by which the lower reel and its cage are fitted is pivotted to a post
and when said reel has to be removed, the bracket is released from the spring catch
and moves to the front and the reel removed from a hole in the workplate after a
slider is drawn out, a spring catch bolding the bracket firmly in a forward and also in
an upright or working position. The spring catch can be operated from a button let
into the workplate.
The cage of the lower reel is a full all round shell with an arrow shaped face
downwardly arranged for engaging in the loop and for spreading it open to pass

page_text: round and under the cage, this having a small tension roller or guide let into it and
used in conjunction with slots in the cage and with a spring closing lid for tension
purposes of the lower reel thread.
Working from an eccentric or cam on the under shaft is a lever (or levers) leading
to a plate, the front end of which has cone pointed prongs and is capable of moving
to and fro, close to, or alongside of the needle hole in the workplate for engaging
the loop of the upper thread for chain stitching and for holding the loop while the
"take-up" draws in the thread, said cone prongs retiring to release the loop for the
final movement of the "take-up" to complete the stitch.
The take-up" appliances are within the back part of the arm of the machine and
actuated from the rear driver mechanism by a lever connected therewith, but they
may be operated from the upper shaft or from the needle bar.
The stitch gauge consists of a series of wheels operated by a thumb button, a hole in
the top plate exposing a circular plate with the different sizes of the stitches markod
thereon or the number of stitches to be made in an inch of fabric.
The whole of the foregoing details can be, and are preferably, incorporated in the
same machine.
For lock stitch sewing, the thread of the under reel is employed in conjunction with
the upper thread whose loop is carried round the lower reel and its cage for each
stitch, the forked to and fro sliding plate being thrown out of action by shifting a pin
under the outer slide of the workplate.
For making the chain stitch the lower thread is thrown out, the cone pronged
sliding plate being put into operation; and for making the locked chain stitch, the
lower or under thread is thrown in to co-operate with the upper thread, while the chain
stitch is being made.
בד
1
1000s
P
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Charles Branston Hunt.
COMPLETE SPECIFICATION.
Improvements in or connected with Sewing Machines.
I CHARLES BRANSTON HUNT of The Branston Two Reel Sewing Machine Company,
Limited, 59 Holborn Viaduct, London, Gentleman, do hereby declare the nature of
my invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention has for object certain detail improvements connected with two reel
sewing machines for the purpose of adapting such machines for the production of
ordinary lock stitch sewing, ordinary chain stitch sowing, and an extraordinary stitch
termed a chain locked stitch at the will of the operator the locking being effected by
the under thread whereby all the elasticity of the ordinary chain stitch is provided
with the advantage of the lock; and relates to
1. A simple method for releasing or throwing out of action the lock stitch and the
throwing in of the chain stitch mechanism and vice versa.
2. Means or appliances for governing the catch action and the release action of the
looper hook.
3. Means for moving an appliance into the loop while the thread is being drawn
by the "take up" and for holding the remains of the loop for the next descent of the
needle.
4. Making the shell of the under reel carrier with a spring lid and with slots for
lacing the thread for the required tension.
5. Pivotting the bracket which carries the under reel and its cage for easy
removal of reel and cage from hole in workplate and in locking the bracket when
returned for work.
6. Appliances for regulating and indicating at a glance the length of stitch desired
to be sewn.

page_text: 7. The combination of the various mechanical motions above referred to in the same
machine and their employment for the respective operation of lock stitch sewing, or
of chain stitch sewing, or of chain locked stitch sewing at the will of the operator.
For the purpose of this invention the needle which is very short is worked in a
straight up and down manner from the upper shaft and has preferably in connection
with its rear connecting rod, the appliances for effecting the take up, said appliances
being in the arm and out of sight.
The front end of the undershaft has a kind of beam lever provided with a stud at
one end on one of its faces. This stud works in a slot of a similarly shaped lever
mounted on a fixed eccentric in which the undershaft works.
The opposite end of the second beam lever has a stud engaging a slot in a disc on
the end of the looper hook stem.
The first mentioned beam lever causes the second
one to rotate with it and the eccentric operates the disc for imparting a canting action
to the looper look at one part of its circular travel for its point to take the loop and
another cant at another part of its circular travel to release the loop and leave the
thread loose for the "take up" to draw in and perfect the stitch or said levers may
be from one side of the shaft only, the change making the positions of the partial
rotation different during the circular travel of the hook, or the beams can be dispensed
with and the motions of the hook be governed by a cam arranged within range of a
short beam on the rod of the hook.
The bracket or carrier by which the lower reel and its cage are fitted is pivotted to
a post and when said reel has to be removed the bracket is released from the spring
catch and moves to the front and the reel removed from a hole in the workplate after
a slider is drawn out, a spring catch holding the bracket firmly in a forward and also
in an upright or working position.
The spring catch can be operated from a button let into the workplate.
The cage of the lower reel is a full all round shell with an arrow shaped face down-
wardly arranged for engaging in the loop and for spreading it open to pass round and
under the cage, this having a small tension roller or guide let into it and used in con-
junction with slots in the cage and with a spring closing lid for tension purposes of
the ower reel thread.
Working from an eccentric or eain on the un lershaft is a lever (or levers) leading
to a plate the front end of which has cone pointed prongs and is capable of moving to
and fro close to or alongside of the needle hole in the workplate for engaging the loop
of the upper thread for chain stitching and for holding the loop while the "take up
draws in the thread said cone prongs retiring to release the loop for the final move-
ment of the take up to complete the stitch.
The take up appliances are within the back part of the arm of the machine and
actuated from the rear driver mechanism by a lever connected therewith but they may
bo operated from the upper shaft or from the needle bar.
The stitch gauge consists of a series of wheels operated by a thumb button a hole
in the top plate exposing a circular plate with the different sizes of the stitches marked
thereon or the number of stitches to be made in an inch of fabric.
The whole of the foregoing details can be, and are preferably, incorporated in the
same machine.
For lock stitch sewing the thread of the under reel is employed in conjunction with
the upper thread whose loop is carried round the lower reel and its cage for each
stitch, the forked to and fro sliding plate being thrown out of action by shifting a pin
under the outer slide of the workplate.
For making the chain stitch the lower thread is thrown out, the cone pronged
sliding plate being put into operation and for making the locked chain stitch the
lower or under thread is thrown in to co-operate with the upper thread while the
chain stitch is being made.
My invention will be understood by reference to the annexed drawings in which all
the foregoing features are clearly shown except one viz. the take up in the rear part
of the arm which I find is not a convenient position for the take up to be operated
from.

page_text: Figure 1 is a longitudinal part sectional elevation of a sewing machine embracing
the foregoing improvements.
Figure 2 is a front elevation with a portion of the frame removed to shew some of
the working parts more clearly.
Figure 3 is an elevation looking at the underside of the machine.
Figure 4 is a part sectional elevation and
Figure 5 an under side plan of that part of the machine showing the appliances for
operating the forked sliding prong which is used for the chain stitch or for the chain
locked stitch sewing.
Figure 6 is a front view of the bottom reel and reel cage carrier with the appliances
by which it is tilted forward when a reel has to be removed and locked in position
when thrown back.
Figure 7 a side elevation of same.
Figure S a plan.
Figure 9 is an elevation of the ree! cage with the spring lid thrown open.
Figure 10 is a part sectional elevation of the appliances for canting the looper
during its rotation around the under reel to take hold of and release the loop
when the ordinary lock stitch sewing or locked chain stitch sewing is being effected.
Figure 11 is a face view of one of the beams constituting the appliance shewn at
Figure 10.
Figure 12 is a face view of the other beam.
Figure 13 is a front view of the two beams in the position the looper occupies when
taking a thread.
According to the first referred to portion of my invention the thread of the
under reel has simply to be broken off to keep it out of action and I push the
appliances hereafter referred to into action and which will be understood by reference
to Figures 2, 4 and 5.
A shows the under shaft of the machine. Ban eccentric thereon with a projecting
arm C provided with a ball and socket joint in which works a vibrating lever D. The
opposite end of the lever D is forked and the fork embraces à V shaped stud E which
when in the fork causes the plate F to slide to and fro but which when forcibly pulled
by the lip G causes the inclines of the V to ride under the lip H of the forked lever D
to draw the plate F back without interfering with the motion of the lever D which
simply rides on the apex of the V shaped projection such as is essential when lock
stitch sewing has to be accomplished. The inner end of the lever F is kinked and
forked the forked portion or prongs a, a, slide in guides under the workplate to
ensure a straight to and fro motion under the action of the lever D when chain stitch
or chain locked stitch is being effected.
The underside of the plate F has affixed to it a spring plate I to bear upon a couple
of springy prongs c, c, shewn also in enlarged view Figure 5A, of conical formation
also fitted to the plate. These conically shaped prongs c, e, touch each other at
the apex but can be separated by the needle when down in them and the plate F is
being drawn back.
The appliances thus described incorporate the means for holding the loop while the
take up draws upon the upper thread as referred to under the third head.
The second part of the invention is illustrated at Figures 1. 2. 3. 10. 11. 12
and 13.
It is composed of two beams, one J is mounted centrally on the undershaft A the
other K on an eccentric K' through which the lower shaft has a free rotation. The
upper end of beam J has a tubular projection L for carrying the stem M of
the looper N the opposite end having a slotted disc or button P into which slot a
stud Q of the beam K has a sliding motion under the action of its eccentric for
turning the looper N into the position for taking each loop in succession and for
throwing it off in the required manner.
The lower end of the bean J has a stud R to ride in a parallel manner in a race S
of the beam K and it is by the combined action of the studs and the eccentric motion
of the beam K that the looper is caused to move for the purpose.

page_text: The fourth part of the invention will be understood by reference to Figure 9.
T is the lid and U the spring by which the lid is retained in an open state as shewn,
or in a closed state to keep the under reel within it. The cage V to which the spring
and lid are attached has a central post to enable the reel to be set vertically in it.
The cage has a slot W for the passage of the thread which is afterwards wound round
a roller X let into the projecting face or guide of the cage V for tension purposes..
This projecting portion Y of the cage is of inverted V shape the lower wings
forming spreaders to open the loop as the looper carries it round the cage.
The fifth part of the invention will be understood by reference to Figures 1. 6. 7
and 8.
is the carrier supported by a horizontal post e which is encircled by a spiral
spring within a box under the workplate. The spring is arranged to cant the
bracket d into the position indicated at Figure 7 to enable a reel cage to be removed
through a hole in the workplate after removing the slider which it can do after the
button heady is pressed down to release the spring catch from a pin which projects
from the bracket'd but which spring catch h firmly locks the bracket in position when
thrown back.
The sixth part of my invention will be understood by reference to Figures 2. 3
and 4.
i is a turn button having on one part of its stem a spur pinion in gear with a
wheel the arbor of which has a pinion in gear with a plate the face of which can be
seen from the upper part of the machine frame this being marked in a suitable manner
to indicate the length of stitch which is desired to be made.
The lower end of the stem of the turn button has a bevil pinion fixed which gears
into another bevil pinion on a threaded rod m, this threaded rod works in a sliding
block which can be drawn to and fro and so alter the centre of a suspension rod p
by which through the intermediation of other rods and levers 7 7' the to and fro
motion of the feed can be determined, said feed being effected from an eccentric ron
the undershaft A through the rods s and levers t, t', the latter t¹ is slotted and has a
pin of the lever 7' which carries the feed foot within it.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The method herein before described by which the change of appliances can be
effected for operation according to the required stitch whether it be lock stitch, chain
stitch, or chain locked stitch as set forth with reference to Figures 4 and 5 of the
annexed drawings.
2. In connection with a two reel sewing machine a cone pronged appliance c,
having points unattached, and capable of a to and fro sliding motion for holding the
loop, for receiving the needle, and for permitting both loop and needle to escape as
described with reference to Figure 5, when chain stitch or chain locked stitch is being
produced.
3. The appliance shown at Figure 10 of the annexed drawings for governing the
catch action and release action of the looper of a two reeled sewing machine.
4. The appliances shown at Figures C. 7 and 8 for enabling the bracket of the
under reel to move forward and for relocking it when thrown back for the purposes
set forth.
5. The appliances referred to with reference to Figures 2. 3 and 4 of the annexed
drawings for governing and determining the length of stitch and for effecting the feed
as described.
Dated this 11th day of Novainber su
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said C. B. Hunt.