Improvements connected with Two Reel Sewing Machines.
Year: 1893

page_text: Date of Application, 12th Sept., 1893
Complete Specification Left, 25th Nov., 1893-Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements connected with Two Reel Sewing Machines.
We, JOHN HOLroyn, Engineer, CHARLES BRANSTON HUNT, Gentleman,
RICHARD JOSEPH JOHNS, Manager, and THE NEW BRANSTON TWO REEL
SEWING MACHINE COMPANY LIMITED, all of 59 Holborn Viaduct, City of
London, do hereby declare the nature of this invention to be as follows:-
:-
This invention has for its object certain detail construction of fittings of two reel
sewing machines and in arrangements of parts and their operation for
1. Governing the motion of the looper for carrying the needle thread around the
lower reel and its holder.
2. Enabling the lower reel and its appliances to be lifted or suspended for the
thread to pass forwardly and under and then to be released for the "take up" to
act for drawing in the slack thread.
3. Enabling the lower reel and its holder to be swung or canted from its working
position for the insertion of a fresh reel.
4. Enabling the reel carrying pillar to be swung clear of the holder to facilitate
the removal and insertion of reels.
To enable this invention to be carried into practice we provide two double armed
or quadrant shaped pieces on the undershaft one being fixed thereto and the other
movable on an eccentric. The ends of these pieces are connected by crank pins
one of which works in a sleeve and has the hook or looper connected to it, the
object being to cause the hook or looper to move in a horizontal or nearly
horizontal plane while travelling round to engage the needle loop and to throw it
off at the proper time.
The forward end of the undershaft is provided with a cam which fits the jaws
or slot of a rising and falling piece or an oscillatory piece. If the rising and
falling piece be fitted it has straight up and down movement. Its back part carries
a pivotted frame having its upper part formed with a lug, projection or arm which
can engage between two ears or curved posts standing up from the top of the reel
holder. The under part of the lug and of the two parts being so shaped that when
the reel holder is dropped the lug or arm falls a greater distance and gives a free
passage for the loop to pass.clear between them.
Instead of two ears or curved posts a single post may be used and so formed to
suit engaging clutches which are operated by wedge pieces on the oscillating shaft
working in a sleeve and receiving its motion from a cam on shaft. The object of the
wedge pieces on the oscillating shaft is for the purpose of opening and closing the
upper and lower clutches alternately to allow the free passage of the cotton carried
by the looper.
These pieces with the reel holder are held in brackets either to cant or to be
drawn sideways or end on for swinging clear of the underside of the work plate in
either case a cam on the end of the undershaft engages in the opening of the
vertically moving frame or in the jaws of the oscillatory frame and govern the
notion of the reel lifting and falling mechanism and the clutch movements direct
therefrom. If the combined swing and sliding frame be fitted, the forward or
end on movement causes the jaws to move clear of the undershaft cam to enable it
to be turned on its swing pin, but where the reel holder and frame is made for
canting motion for the withdrawal and replacing of a reel it does not move from
the cam.
The reel holder is preferably made from two dises on a bar and bent at right

page_text: angles the forward or point ends being attached by a pedestal between which and
the lower disc is pivotted a pillar over which the reel can be placed for slewing in
and out of the holder, said pillar being provided with a spring and buffer pin for
engaging into a central hole or recess of the bottom disc to fix the reel centrally
therein. The two discs may be further connected by a bar to serve as a guide for
leading the thread off the reel to the guide eye without fear of the thread being
kinked whether it comes from the upper or lower part of the reel. The first
named bar connecting the two discs is slitted at its upper end for the thread to
run through, the slit being partially closed by a tension spring.
The frame in which the reel holder is carried has inclined wings or a bevilled
ledge at its backward portion and when the holder drops it has a motion to the
front by dropping down the incline ledge, the reel holder then becomes temporarily
fixed and is made steady and firm while the slack thread is being drawn up through
the fabric.
COMPLETE SPECIFICATION.
Improvements connected with Two Reel Sewing Machines.
We, JOHN HOLROYD, Engineer, CHARLES BRANSTON HUNT, Gentleman,
RICHARD JOSEPH JOHNS, Manager, and THE NEW BRANSTON TWO REEL
SEWING MACHINE COMPANY LIMITED, all of 59 Holborn Viaduct, City of
London, do hereby declare the nature of this 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 its object, certain detail construction of fittings of two
reel sewing machines, and arrangements of parts and their operation for :-
1. Governing the motion of the looper for carrying the needle thread around the
lower reel and its holder.
2. Enabling the lower reel and its appliances to be lifted or suspended for the
thread to pass forwardly and under and then to be released for the "take up
" to
act for drawing in the slack thread.
3. Enabling the lower reel and its holder to be swung or canted from its working
position for the insertion of a fresh reel.
4. Enabling the reel carrying pillar to be swung clear of the holder to facilitate
the removal and insertion of reels.
Our invention will be clearly understood by reference to the annexed
drawings.
Figure 1 is a front elevation of a two reel sewing machine with the work plate in
transverse section through the line of the feed foot slot.
Figure 2 a front elevation of the lower part only, and with the lower reel
canted forwardly for lifting through the sliding plate aperture of the work plate...
Figure 3 part longitudinal section.
The arrangement of the mechanism in connection with the lower reel being shown
in an assembled condition, in the above figures.
Figure 4 is a reverse side elevation (detached) of the canting appliances to that
shown at Figures 1 and. 2 with reel and holder lifting apparatus operable by. cam
from the undershaft.
Figure 5 plan of same.

page_text: Figure 6 perspective elevation of a reel holder with swivelling plate and pedestal
for carrying the reel.
Figures 7 and 8 side elevation and plan of reel holder with plate and pedestal
swung outwardly for the ready affixture or removal of reels.
Figure 9 section of reel pedestal, holder, and shaft connection.
Figure 10 front elevation of looper and its actuating appliances.
Figure 11 shows the several parts of the looper mechanism in detail and
approximately in the positions they are intended for when assembled.
Figures 12 and 13 are side and back elevations of reel holder carrying
bracket.
Figure 14 view of cam and catch plate of the reel canting appliances.
Figure 15 perspective elevation of arm by which the lower reel and its appendages
are carried.
Figure 16 detached view of coiled spring wire for fixing the reel and its bracket
in a canted condition.
Figures 17 and 18 detached views of appliances by which the reel and its holder
are lifted in the bracket for the loop thread to pass under them without frictional
contact.
Figure 19 view of buffer and spring to keep cam silent while machine is
running.
Figure 20 elevation of complete machine with certain parts in section for showing
under gear and appliances termed a stitch regulator operable from the back link, or
connecting rod.
Figure 21 detached view of stitch regulator.
Figure 22 botton plan of machine showing how the feed is governed.
1, base plate. 2, tipright. 3, arm. 4, head. 5, upper shaft, and 6, under shaft
of machine. 7, lug screwed under the base plate, and having its boss 8 as a pivotal
centre for the bolt 9 and arm 10 to rock on when the button 11 is depressed, which
action causes the locking nose 12 to leave the notch 13 of the disc 14, and the spring 15
to cant the reel holder 16 and bracket 17. Another spring for actuating the button
arm 10 is in tension with one end in a hole 18 of the boss 8, and the other in the
arm 10.
19 is an extension from the boss 8, and has a hole 20 for the reception of the
spring 15, one end of said spring being in the hole 20 of the boss 21 and the other
in the hole 22 of the disc 14 which is secured to the side 23 of the bracket 17,
said spring being in tension to pull the bracket to the position represented by the .
dotted line 24 in Figure 2, when the button 11 is depressed to remove the nose 12
from the notch 13, so that the bracket 17 with its contained reel holder 16 and
réel 25 can spring over until the stop 27 bears against the nose 12 of the arm 10.
When the reel 25 is replaced, or a fresh one put into the holder 16, the holder
is put into the bracket 17, and the bracket is moved back until the nose 12
re-engages in the notch 13 to fix the bracket 17 vertically. The bracket 17 swivels
on axles 28, 29, the axle 28 passes into and through boss of the extension 19. The
other axle 29 of the bracket 17 is sufficiently long to enter a hole 30 of the under
shaft 6, the extremity of which carries a cam 31 to travel round with said shaft 6.
This cam 31 fits a forked recess 32 of the reel and holder lifting appliance 33.
One leg 34 of said appliance 33 has a recess 35 for a head 36 of a stud pin 37
to lodge in, such pin bearing on a spring 38 and its head acting as a buffer to press
against the cam 31 to prevent jumping noise at that part while the machine is
running. The forked plate of the appliance 33 has fixed at 39, a leg 40 of a
combined thread guide 41, and lift prong 42, the latter of which projects into
between two curved horns 43, 44, standing up from the reel holder 16, one of them
being slightly higher than the other to regulate the passage of the upper thread
loop when being drawn by the "take up "-45.
The plate 32 of the lifting appliance has a shaped piece 46 fitting a corre-
sponding shaped groove 47 at one side of the bracket 17 for ensuring the direct
up and down motion of the lifting appliance under the action of the cam 31.

page_text: The reel holder 16 is composed of two discs 48, 49 connected by a bar 50 in a
piece therewith, and a post 51 screwed to the discs. The post 51 has a reduced
diameter at its lower part, and this is encircled by a swivelling sleeve 52 of a
plate 53, the inner end of which has the reel carrying pedestal 54 standing up
from it, said pedestal is hollow for holding a plunger 55, and spring 56 within it,
these being retained in place by a screw pin 57. The lower end of the plunger 55
projects through the plate 53, and when in the position seen at Figure 9, the
plunger pin enters a central recess of the disc 49 to fix the reel centrally in the
holder, but said pedestal can be readily slewed round on the post 51, as at Figures 7
and 8, for placing a reel over the pedestal when required, the reel being then slewed
back with the pedestal to centralize it in the holder.
The bar 50 has an eye 58 in the inner face for leading the thread from the reel
which stands vertically in its holder. 59 is a guide bar for leading the thread
from the reel to the eye 58. The spring 60 prevents the thread being drawn from
the reel too rapidly.
61. is an additional eye on the disc 48 for guiding the thread to the needle hole
in the work plate.
The reel holder 16 is lifted by the cam 31 just when the upper thread loop is
approaching and passing under it, as at Figure 3, and as soon as the loop is clear,
the holder drops down in the bracket 17 to leave an opening between the lifter 42,
and the horns 43, 44, for the loop thread to be drawn in by the "take up." The
inner bottom surface of the bracket 17 is inclined slightly from back to front, and
the holder in its drop slides forwardly and gives a positive clearance between its
back and the bracket for the loop thread to be drawn in without friction, the shape
and curvature of the lifter 42 and horns 43, 44 being such that while the holder
is being lifted it slides slightly to the rear to ease the touch of the loop thread
while it passes under.
62 is a sleeve fixed in the foot lug 6*, said sleeve is in a piece with an
eccentric 63 encircled by the strap 64, and kept in place by the face plate 65.
This strap has two curved arms 66, 67, with socket ends 68, 69 for the reception
of crank pins 70, 71, which project from webs 72, 72, other crank pins 73, 74, on
the opposite sides of the webs 72, 72, fit in sockets 75, 76, of two arms 77, 78, of
a collar 79, the latter being fixed on the under shaft 6 to draw round the eccentric
strap 64, and its arms 66, 67, the book 80 being by these means kept in a horizontal
plane during its complete travel round the bracket 17 in which the reel and its
holder are enclosed. One of the sockets riz. 75, is longer than the other, and
forms a sleeve for the extra long pin 73 of the web 72 to pass through, and to
which the hook 80 is secured. The hook 80 in its circular travel passes close to
the needle 81 to engage the loop made in the well known manner, and as it travels,
it drags the upper thread down the front of the holder 16, and between it and the
bracket 17, the loop gradually opening out and widening by riding against the
inclines 82, 83, of the two discs 48, 49, until it passes under the bottom disc 49 to
the rear, where from the open state of the loop, see dotted lines 84, Figure 1,
the book 80 moves clear, and leaves the loop to be drawn in by the "take up
" 45.
The upper shaft 5 by the rod 82* produces rotation of under shaft 6 in the well
known manner. The forked end 83* of the lever 84* is operated by the cam 85
on the driving shaft 5, the opposite end of the lever being pivoted at 86 to the
lever 94 projecting from the rocking shaft 93. The lever 84* has a link 87 pivoted
to it at 88, the lower end of the link 87 being pivoted at 89 to a corresponding
link 90 lying directly behind it, and having its upper end fixed to an axle 91
passing through the upright 2 of the machine, where it is provided with a hand
lever 92 for regulating the feed of the material through the machine in the
following manner.
When the links 87 and 90 are in the position shown by the full lines in
Figures 20 and 21, a to and fro motion only is imparted to the lever 84*, by the
operating cam 85, and consequently the levers 94 and 95. do not vibrate as the
lever 84* moves only to and fro from its pivot 86 similarly the lever 87 pivoted

page_text: to 84* at 88, vibrates upon its centre 89, through the are 97 which is nearly a
horizontal line.
The amount of vibration of the rocking shaft 93, and consequently the movement
of the feed 96 can be increased by lifting the thumb lever 92 to move the levers 87
and 90 to the position indicated by the dotted lines in Figure 21, or in any
intermediate position according to the length of stitch required. In this case, the
lever 84 is not only caused to move to and fro by the cam 85, but also to rise and
fall by reason of the link 87 which is pivoted to it, having its direction of vibration
altered from the horizontal to that approaching the vertical, as indicated by the
arc 98, Figure 21, the link 87 having its pivotal movement from the point 89 lifts
the lever 84* in the direction of the arc 98. The motion thus given to the lever 84*
by its connection with the rocking bar 93 through the levers 94 and 95 is
communicated to the feed 96.
.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In the two reel sewing machine described herein and illustrated in the
accompanying drawings, the devices composed of the arm 10, button 11, nose 12
for releasing bracket 17 which cants forwardly by spring 15 in socket 21 of
extension 19, substantially as described.
2. In a two reel sewing machine, supporting a reel carrying bracket 17 by
axles 28, 29 in socket 21. and hollow 30 of under shaft 6 respectively, substantially
as described.
3. In a two reel sewing machine, the reel holder composed of two discs 48, 49,
and bar 59 with front ends connected by post 51.
4. In a two reel sewing machine, the swivel plate 53, hollow pedestal 54,
spring 56, and plunger 55 therein, substantially as described.
5. In a two reel sewing machine, the cam 31 on under shaft 6, appliances 40, 41,
42, lifted by said cam in combination with horns 43, 44, substantially as described.
6. In a two reel sewing machine, arms 66, 67 on collar 64 in combination with
arms 77, 78 on socket 79 employed in conjunction with cranks 70, 71, 73, 74, for
operating hook 80 from eccentric 63, the arms 77, 78, with boss 79 being fixed to
under shaft. 6, substantially as described.
The 25th day of November 1893.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said John Holroyd, Charles Branston Hunt,
Richard Joseph Johns, and
The New Branston Two Reel Sewing Machine Company, Limited.