Improvements in Sewing Machines for Sewing Two or More Lines of Stitching.
Year: 1892

page_text: Date of Application. 6th Dec., 1892
Complete Specification Left, 6th Oct., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Sewing Machines for Sewing Two or More Lines
of Stitching.
We CHARLES WILLIAM ALLEN and THOMAS ROBERT ROSSITER both of
the Firm of Chappell Allen & Co. of 24 Basinghall Street in the City of London
Corset Manufacturers do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to provide in sewing machines for sewing two or
more lines of stitching means whereby the distance apart of the lines can be varied.
To effect this we mount the shuttles and their carriers and the gearing through
which they are driven and the needle plate so that they can be turned together
upon one centre. The needles are carried by a needle head which is also capable of
rotation on the needle bar, the centre of rotation being coincident with that upon
which the shuttles and adjuncts are rotated as aforesaid. The shuttles and adjuncts
and the head carrying the needles can be rotated independently of each other or
they may be geared together through the goose-neck for example so that their
movement is simultaneously and uniformly effected. The number of shuttles and
needles may be two or any greater number as desired.
In order to keep the driving shaft in gear with the shuttle drivers we may effect
the driving of the shuttle carrier as a whole from the driving shaft and cause each
shuttle to rotate by means of internal teeth upon the said carrier. Or the driving
of the individual shuttles may be effected by cranks actuated from the shaft.
In order to keep the proper timing of the shuttles relatively to the needles which
would be altered by the circular movement of the shuttles as aforesaid, we may
provide means by which the gear wheels or cranks or the like on the driving shaft
can be moved back a distance corresponding to that through which they were
moved forward during the circular adjustment of the shuttles and adjuncts.
Dated this 6th day of December 1809
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Sewing Machines for Sewing Two or More Lines
of Stitching.
We, CHARLES WILLIAM ALLEN and THOMAS ROBERT ROSSITER both of
the Firm of Chappell Allen & Co. of 24 Basinghall Street in the City of London
Corset Manufacturers 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:-
The object of this invention is to provide in sewing machines for sewing two or
more lines of stitching, means whereby the distance apart of the lines can be varied.
To effect this we mount the shuttles, and their carriers and the gearing through
which they are driven, and the needle plate, so that they can be turned together
upon, or around one centre. The needles are carried by a needle head which is also
capable of rotation on the needle bar, the centre of rotation being coincident with
that upon which the shuttles and adjuncts are rotated as aforesaid. The shuttles,
and adjuncts, and the head carrying the needles, can be rotated independently of
each other, or they may be geared together, through the goose-neck for example, so

page_text: that their movement is simultaneously and uniformly effected. The number of
shuttles and needles may be two, or any greater number, as desired.
In order to keep the driving shaft in gear with the shuttle drivers we may
effect the driving of the shuttle carrier as a whole from the driving shaft and
cause each shuttle to rotate by means of internal teeth upon the said carrier.
Or the driving of the individual shuttles may be effected by cranks actuated from
the shaft.
In order to keep the proper timing of the shuttles relatively to the needles
which would be altered by the circular movement of the shuttles as aforesaid, we
may provide means by which the gear wheels, or cranks, or the like, on the
driving shaft, can be moved back a distance corresponding to that through which
they were moved forward during the circular adjustment of the shuttles and
adjuncts.
In order that the invention may be well understood we will describe with
reference to the accompanying drawings the manner in which the same may be
performed premising that we do not limit ourselves to the precise details shewn.
Figure 1 is a side view of so much of a sewing machine as is necessary to
illustrate the application of this invention thereto. Figure 2 is an end view partly
in section and Figure 3 is a plan of underside.
Figure 4 is a transverse section on the line 1, 2 Figure 3 and Figure 5 is a plan
of the cloth plate and needle plate, with the flaps which cover the shuttles opened
out, and with one of the shuttles in place and with part of the needle plate broken
away.
The machine illustrated is constructed to make four rows of stitching but it will
be understood that it can be similarly made to make two, or a greater number of
rows of stitching, by providing the corresponding number of parts as hereinafter
described with respect to this machine for sewing four rows of stitching.
'
The shuttle carriers A are mounted in recesses in a circular box A2 with the
needle plate B at top and with covers for the recesses which form part of the cloth
plate. The said carriers are each formed of a shuttle carrier proper connected by
a stem which passes through the box A2 and carries a crank disc a¹ for driving.
The box A2 is capable of being rotated in a circular groove formed in the base
plate of the machine in which groove runs the projecting ring a on the box A² it
being kept in place by the plates a². A spring bolt or catch C mounted on the base
plate engages with notches 63 in the circular box A2 to secure it in the position to
which it has been adjusted. The shuttle carriers and their shuttles are rotated in
their circular recesses by means of the connecting rod D and shaft E and gearing
as hereinafter described by a crank driven from the main shaft of the machine.
The shaft E is provided with the bevel wheels e e gearing with the bevel
wheels mounted on the studs the said wheels and et being furnished with
crank pins to which the connecting rod D is secured the said connecting rod
having a loop d in it to enable it to pass the gearing wheel e² and with a ring
portion to enable it to pass the cloth feed G (which cloth feed may be operated
in the usual way). The said ring portion d² has secured to it by the screws d*
another ring d³ the said ring d³ receiving the crank pins a³ secured one to each of
the shuttle carriers. By moving the box A2 through a partial rotation the
distances between the rows of stitching can be varied as illustrated by the diagrams
Figure 6. The circles representing the line of action of the needles and the
lines y the lines of stitches. The machine is shewn as being provided with
notches for four adjustments but it may of course be made to have any desired:
number of adjustments. Before the box A2 is adjusted by partial rotation the
screws are removed so as to allow the ring d³ to turn upon the ring the ring d
being provided with circularly disposed slots as shewn in Figure 3 to allow the
ring to move round upon the ring d². The screws are, after the box has been
adjusted, inserted in the screw holes (d) in the ring d³ which come opposite the
said screws d' there being provided for each screw d' a number of such screw holes
corresponding to the number of the notches b³ and at a distance apart such that
1

page_text: they come opposite the screws d when the notches 63 come opposite the spring
catch C. The gear wheels e e² are mounted on the shaft E by means of a tube E
to which the said wheels are affixed the attachment of the said wheels and tube to
the shaft E being effected by means of a disc g secured to the wheel e (or to the
tube E²) and a disc g² secured to the shaft E the said discs being secured together
by means of a screw or screws g³ holes for the screws in one of the discs being
provided as explained with regard to the rings d² d³ and discs hh. hhhh are
the four needles secured in a needle head h' affixed to a rod h³ passing through the
tube H which tube during the working of the machine is operated as the needle bar
of a sewing machine is ordinarily operated. The rod ³ is secured to the tube H by
means of the discs h* and * secured respectively to the rod and the tube screws
securing the discs together. When the screw or screws is or are removed the rod h³
can be rotated in the tube H and the needles & be brought into a position to corre-
spond with the adjusted position of the shuttles by the partial rotation of the
box A. Holes for the screws are made in one of the discs (h* or h³) in such
positions as to enable the discs to be secured together in either of the adjusted
positions of the needles. The machine is provided with bobbin carriers, tension
devices, and take-ups corresponding in number to the number of shuttles and
Deedles. Z is the presser foot perforated with holes to correspond with the number
and positions of the shuttles and needles the said presser foot being removeable, so
that different feet perforated with holes in the proper positions relatively to the
shuttles and needles can be put in place when the machine has been adjusted. When
the machine is in operation the gearing e e e e¹ operates the shuttle carriers by
means of the connecting.rod. D and crank pins a³.
To adjust, the machine to alter the distance apart of the lines of stitching the
spring catch C is drawn back and the screws d' are removed and the box A2 with
the needle plate and the shuttle carriers, shuttles and ring ³ are moved through a
partial rotation and then the spring catch C is engaged with the notch 63 which is
now opposite it--and the screws d' are inserted in the holes d' which are now opposite
them. Then the screws which secure the discs h h are removed and the disc h'
and rod h³, and needle head and needles h are rotated until they are brought into
a position corresponding to that of the shuttles, and the screws are inserted into the
holes in the disc h which are now opposite to them.
The presser foot Z is then removed and another presser foot is put in place with
holes for the needles in positions corresponding to the altered positions of the
needles and shuttles. If preferred the perforated part of the presser foot may be
made so that it can be rotated in the main part of the presser foot to bring the
holes in the presser foot into position to correspond with the altered position of
the needles and shuttles the said perforated part being fixed in its adjusted position
by a catch or screw or other convenient means. We have shewn separate covers i
for covering each shuttle but one cover or any convenient number of covers can
be used.
In order to adjust the timing of the movement of the shuttles relatively to the
needles the screws g³ of the discs g g³ are withdrawn and the tube E' is turned upon
the shaft E so as to move back the gear a distance corresponding to that through
which it was moved forward when the shuttles and their adjuncts were adjusted.
The screws are then inserted in the holes which are now opposite them so as to
secure the discs 9 and 92 again together.
The parts which we have not described may be like, or similar to, the corre-
sponding parts in ordinary sewing machines and they may be operated in the same
manner.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In sewing machines for sewing two or more rows of stitching a support or
holder for the shuttles mounted so that it and the shuttles carried by it can be

page_text: adjusted by a motion of partial rotation substantially as and for the purpose herein-
before described.
2. In sewing machines for sewing two or more lines of stitching a support or
holder for the shuttles mounted so that it and the gearing or attachments through
which the carriers are driven can be turned together around a central point
substantially as and for the purpose hereinbefore described.
3. In sewing machines for sewing two or more rows of stitching a support or
holder for the shuttles mounted so that they and the gearing or attachments througà
which the carriers are driven can be turned together around a central point in com-
bination with a needle head which is capable of being turned around a centre in
line with the central point around which the support or holder of the shuttles can
be turned substantially as and for the purpose hereinbefore described.
4. In combination with the subject matter of either of the preceding claiming
clauses driving mechanism for the shuttles which mechanism can be adjusted
relatively to the needles so as to enable the timing of the shuttles and needles to be
brought into proper relation to each other after the alteration of the position of the
parts for varying the distance apart of the lines of stitching has been effected
substantially as hereinbefore described.
5. The arrangement and combination of parts constituting a sewing machine for
Fewing two or more rows of stitching at variable distances apart substantially as
herein before described and illustrated by the accompanying drawings.
Dated this 6th day of October 1893.
J. H. JOHNSON & Co.,
Agents.