Improvements in Sewing-machines.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Sewing-machines.
I, ERIC BERNHARD NYLANDER, of Ornsköldsvik, Sweden, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in sewing machines and has for its object
to simplify the construction of such nachines and enable them to work in an
almost noiseless manner (owing to the absence of cog wheels) while at the same
time retaining the advantageous characteristics of machines as heretofore made.
In a machine according to my invention from the machine frame rises the usual
bent arm which in the front is connected with an angle shaped piece, in which both
the needle bar and the cloth presser bar are capable of up and down movement.
The needle har receives its up and down movement in the following way. On the
driving shaft of the machine there is a crank or crank disc, whose pivot, which
may or may not be provided with an antifriction roller, is movable in an angle
shaped groove in one end of an oscillating arm that is movable on a pivot, the
other end of the said oscillating arın being connected with the needle bar for
instance by means of a short link. The crank disc being rotated, the vertical
part of the oscillating arm receives an oscillating movement to the right and to
the left, and its horizontal part on the other side of the pivot, and consequently
also the needle bar connected to its end, receives an oscillating up and down
movement.
On the needle bar is provided a sleeve, which by means of a set screw may be
fixed at a suitable point on the needle bar, said sleeve being connected by means
of a rod with the front part of the oscillating arm being fixed thereto by means
of a screw.
The cloth presser differs from previously known constructions and is made
adjustable so as to press more or less strongly as required.
For this purpose on the presser bar there is placed a sleeve provided with hooks
with which books a pin fixed on the bar engages. By pushing the sleeve so that
the pin engages with one of the lower hooks a spiral spring fixed between the
sleeve and the angle shaped piece is pressed together more than is the case when
the pin engages with the uppermost hook.
The presser bar is raised and held in the raised position as follows:-The bar
is lifted by hand and then slightly turned. A pin inserted in a hole, when the
presser is in its lower position, is then lifted out of the hole and rests against the
upper edge of the said piece the presser bar being thus held in the required
position. As soon as the bar is turned so that the pin is inserted again in the hole,
the bar is pressed down by means of the elasticity of the spring and its lower
fork shaped part is pressed against the cloth and holds it fast.
The shuttle conductor comprises au arm fixed on an axle parallel with the
driving shaft, said first mentioned axle receiving a backward and forward rotating
movement from the above mentioned pivot by means of the rod movably connected
with said pivot, the other end of the rod being movably connected with a crank
fixed on the axle of the movable shuttle conductor.
In order to permit of the use of shuttles of different lengths the crank pivot,
connecting the rod with the crank of the axle of the shuttle conductor is to he

page_text: regulated for instance in a groove in the crank, so that the crank may be lengthened
as required.
The transporteur comprises a lever movable on a pivot up and down and forwards
and backwards and at one end it is influenced by a spring. The movement up and
down is performed by a cam or eccentric on the axle of the shuttle conductor
against which eccentric the transporteur is pressed by the spring. The movement
forwards and backwards is effected by means of a lever movable on a pivot, the
other end of said lever having a groove in which the pivot of the driving shaft
passes. For this purpose the lever is provided with an inclined plane, against
which a roller on the transporteur is pressed by the spring.
To regulate the length of the stitch an arm is movably fixed at the ground
plate, the free end of which arm is shaped as a pawl and engages by means of a
spring with a ratchet segment, so that the arm may by hand be made to engage
with any tooth of the ratchet segment. The regulating arm is placed in front of
the transporteur in its path. Consequently, by adjusting the arm on the segment
the backward movement of the transporteur or feeder and thus also the length
of the feeding for every time is limited.
Dated this 20th day of July 1896.
F. WISE HOWORTH,
46, Lincoln's Iun Fields, London, W.C., Agent for the Applicant.
Improvements in Sewing-machines.
I, ERIC BERNHARD NYLANDER, of Ornsköldsvik, Sweden, Manufacturer, 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 relates to improvements in sewing-machines and has for its
object to simplify the construction of such machines and enable them to work in
an almost noiseless manner (owing to the absence of cog-wheels) while at the
same time retaining the advantageous characteristics of machines as hitherto
made.
In the accompanying drawings,
Figure 1 is a side-elevation of a machine according to this invention;
Figure 2 is a plan-view;
Figure 3 is an end-view;
Figure 4 is a vertical longitudinal section, the upper part being broken away;
Figure 5 is an underside-view;
Figs. 6 to 9 inclusive are detail-views.
Similar letters of reference indicate corresponding parts.
A is the bed-plate of the machine-trame, and B the usual bent stationary arm
rising from the 'bed-plate, said arm being provided at its end with a head B', in
which both the needle-bar and the presser-bar are movable up and down. On the
arm B is, as usual, a vertical pin for a spool T and a thread-tension O, from which
the thread passes through a hole N in the needle-bar to the eye of the needle.
The needle-bar E receives its up and down movement by means of the following
arrangements. On the driving-shaft D of the machine there is a crank or crank
disc V. whose piu, which may or may not be provided with an antifriction-
roller V, moves in an angle-shaped slot Y in the one end of an oscillating lever C
mounted on a pivot U, the other end of the said oscillating lever being connected
with the needle-bar by means of a short link, for instance. The crank disc V
being rotated, the vertical part of the oscillating lever receives, as will be easily

page_text: understood, an oscillating movement to the right and to the left, and its horizontal
part on the other side of the pivot, and consequently also the needle-bar connected
with it, receives an oscillating up-and-down movement.
On the needle-bar E is provided a sleeve Z, which may be fixed at a suitable
point on the needle-bar by means of a set-screw the said sleeve being connected
by means of a link L with the front end of the oscillating lever C, which is fixed
thereto by means of a screw.
By this arrangement the machine is made independent of the length of the
needle, which is a great advantage.
The presser foot differs from previously known constructions and is made
adjustable so as to press more or less strongly as required.
For this purpose there is arranged on the presser-bar a sleeve I provided with
hooks with which a pin I fixed on the bar engages. By shifting the sleeve so
that the pin engages with one of its lower hooks a spiral spring K fixed
between the sleeve and an abutment on the head B¹ is compressed more than when
the pin, as shown in the drawing, engages with the uppermost hook.
The presser-bar is raised and held in the raised position as follows:-The bar is
lifted by hand and then slightly turned. A pin M, carried by the presser-bar and
inserted in a hole in the head B' when the presser-foot is in its lower position, is
then lifted out of the hole and rests against the top of the head B', the presser-
bar and foot being thus held in the required position. As soon as the presser-bar
is turned so that the pin M is inserted again into the hole, the bar is pressed down
by the spring K and its presser-foot is pressed against the cloth and holds
it fast.
The shuttle conductor F consists of an arın fixed on a short shaft a parallel
with the driving shaft D, the shaft receiving a backward and forward rocking
movement from the above mentioned pin X, by means of the rod 1 movably
connected with the said pin, the other end of the rod being movably connected
with a crank v fixed on the shaft z of the movable shuttle conductor. P is the
shuttleplane and S the shuttle.
In order to permit of the use of shuttles of differeut lengths the crank-pin
connecting the rod with the crank of the shaft of the shuttle-conductor F,
is adjustable for instance in a notch or slot in the crank w, so that the effective
length of the crank v may be lengthened or shortened as required.
The feed-device consists of a lever G, which is movable, on a pivot g, up and
down and forwards and backwards, and at one end it is acted upon by a spring f.
The up and down movement is performed by a cam or eccentric on the shaft
of the shuttle conductor F, against which eccentric the feed-device G is pressed
by the spring f. The forward and backward movement is effected by means of a
lever m mounted on a pivot t, the other end of said lever having a slut n into
which the pin X of the driving shaft D extends. For this purpose the lever mis
provided with an incline s, against which a roller k on the feed-device G is
pressed by the spring f.
To regulate the length of the stitch, an arm r is movably fixed to the bed-
plate A, the free end of this arm being shaped like a pawl while the rear end
formis a spring which causes the pawl to engage with a series of teeth y formed on
the bed-plate so that the arm r, after being moved by hand, will, by its pawl
portion be engaged with any required tooth of the series. The regulating arm r
is placed in front of the feed-device G, in its path. Consequently, by adjusting
the arm on the series of teeth g the backward movement of the feed-device and
thus also the length of the feed is always limited.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is :-
1. In a sewing-machine, the combination with the spring-controlled feed-
device G, of an oscillating shaft x provided with an eccentric arranged under

page_text: the operative end of the feed-device for imparting an up and down movement
to the same, and an oscillating lever m extending alongside the feed-device and
actuated froin the driving-shaft of the machine, said lever m having an incline
at one side against which a side portion of the feed-device is forced by its
spring, whereby the backward and forward movement is given to the feed-device,
substantially as set forth.
2. In a sewing-machine, the combination with the feed-device G, of a
regulating arm, placed in front of the feed-device in its path, said arm being
movably fixed to the bed-plate A and having its free end shaped like a pawl,
while the rear end forms a spring, which causes the pawl to engage with a series
of teeth a formed on the bed-plate A, substantially as set forth.
3. In a sewing-machine, the combination with the driving-shaft D and the
connecting red 1 for imparting motion to the shuttle-conductor, of a device for
permitting of the use of shuttles of different lengths, consisting of a crank v,
arranged on the shait a of the shuttle conductor F, and provided with a notch or
slot, in which said connecting rod is adjustably fixed, substantially as set forth.
4. In a sewing-machine, feed, stitch-regulating, and shuttle mechanism con-
structed, arranged, and operating substantially as herein before described with
reference to and shown in the accompanying drawings.
Dated this 20th day of April 1897.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.